Abstract: The punching die of the invention has a head 22 held by positive engagement. The head 22 is held on the shaft 21 of the die 8 in that by means of plastic deformation, for instance by radial application of pressure, material is positively displaced radially inward, so that a protrusion 28 is embodied which rests over a large area on the wall of a recess 23. A more secure, more durable force transition is assured.

Abstract: A flatbed punching module for punching a printing material includes an upper platen and a lower platen which can be moved by a drive relative to the upper platen that is fixed to a frame, in order to perform a punching stroke for punching the printing material passing between the upper platen and the lower platen, resulting in the lower platen engaging with or being thrown onto the upper platen. As a result, the printing material can be processed through the use of at least one punching die. At least one printing material transport device for guiding the printing material, is held fixedly on the movable lower platen. The flatbed punching module can advantageously be used in a flatbed punch for processing a printing material web.

Abstract: The invention relates to a tool device for forming a section of a body. The device includes at least one moveable retaining device and at least one forming punch moveable in the direction of the retaining device. The section to be formed is arranged between the retaining device and the forming punch. The forming punch during the forming is moved from an initial position into a defined end position relative to the section to be formed. In order to limit the construction space and the forces to be applied, the tool device includes a wedge element which is in contact with the retaining device and/or a die such that a movement of the wedge element effects a movement of the retaining device and/or of the die in the forming direction. Furthermore, a forming method is provided with the aid of the tool device.

Abstract: A punching device comprises a pushing pole, an adjusting portion, a supporting portion, and a spring. The pushing pole comprises a first threaded end and a second threaded end. The adjusting portion defines a screw hole therein, through which the adjusting portion is fixed to the first end of the pushing pole. The supporting portion is located on the pushing pole, with the pushing pole passing through a through hole in the supporting portion. The spring is disposed around the pushing pole, with two ends respectively abutting against the adjusting portion and the supporting portion.

Abstract: In a device for assembling components subjected to strong accelerations or decelerations for machines using adiabatic energy change, assemblies of components include spring pins providing absorption of mechanical vibrations due to pounding effects. The device is applicable for mounting punches.

Abstract: A puncher is used when piercing a workpiece with a piercing punch while the workpiece is kept pressed by a stripper. The cover provided on the puncher is made of metal and a diameter of a cover portion at and near a tip end side is smaller than that of the other cover portion other than the cover portion. The other cover portion of the cover receives a biasing member. The cover portion at a tip end side gradually reduces its diameter toward the tip end to form a tapered portion. The puncher provides a long lifetime, guarantees sufficient pressing force onto a workpiece, and punches a hole at a position near and nearer a corner of the workpiece having adjacent metal plate surfaces forming an angle of from 90 degrees to 95 degrees at the corner.

Abstract: A system and process for stamping parts having tolerances below 1000 nanometers. The inventive system and process is particularly suited for producing optoelectronic parts. The system includes a stamping press and one or a progression of stamping stations for supporting a punch and die. The stamping stations are designed to maintain substantial alignment of the punch and die with minimal moving components. The stamping station includes a shaft for rigidly guiding the punch to the die. The stamping press is capable of providing the punch with the necessary force to perform the stamping operations. The system includes an interface system for interfacing the force of the press with the punch, while simultaneously structurally decoupling the press from the punch. The system also includes a locating sub-plate, for locating the stamping station in alignment relative to each other, and means for in-line machine stock material before entry into the stamping stations.

Abstract: A hole-punching assembly comprising a positioning piece, a clamping piece, a plurality of tool holders, two balancing rods and a plurality of hole mountings. Each end of the positioning piece couples to the hole mounting through a balancing rod, the positioning piece has a gliding rail, a receiving slot and a confining part disposed at an indentation at each end for each of the tool holders to go through the positioning piece, thereby fixing the tool holders. Each of the tool holders has a first end extending to one of the hole mountings and a second end being blocked by the clamping piece. The clamping piece has one rod disposed at each end, with each end of the rod protruding through the receiving slot axially and being restrained by the confining part, thereby fixing the clamping piece and forcing the tool holder to move axially to facilitate easy switching and dismantling of the tool holders.

Abstract: A paper punch apparatus comprising a flange-storing space for storing the flange portion in an elevating unit, an insertion/removal portion for insertably supporting a supporting axis of a bit reception plate in communication with the flange portion, and a bit-reception-plate engagement/disengagement portion for engagement/disengagement with respect to the flange portion of the bit reception plate in the flange-storing space, so that the bit reception plate can be parallelly and linearly inserted/detached with respect to the elevating unit, insertion/detachment can be steadily and securely performed at all times, whereby the apparatus is simple in structure, inexpensive, and excellent in, for example, paper punch functions, handling functions for a hole punch bit(s), bit reception plate(s), punched-paper-scrap discharge functions, and punch-position adjustment functions, and further the punch apparatus enables quality improvement, cost reduction, and the like to be implemented.

Abstract: A gasket cutter with changeable and reversible dies and punches including a body having upper and lower opposed arm members, a cylindrical member slidingly engaged within said upper arm member to be raised and lowered by rotation of a handle attached to the cylindrical member, and a platen releasably secured to the lower arm member. A cylindrical punch and a ring die surrounding the punch are attached to the platen. The ring die includes a first and second inner diameter at first and second ends thereof creating with said punch a first and second gap, respectively. A reversible punch die having first and second opposed cutting edges is releasably attached to the cylindrical member so that the first or second cutting edge of the punch die descends into the first or second gap, thereby cutting a ring gasket of a desired size from a sheet of gasket material.

Abstract: A stamping and die-cutting tool with quick mould change design comprises: a casing and a pushing member. The pushing member has a pushing portion to be fixed at an extended position and a retracted position alternatively after being pressed repeatedly. The pushing member is fixed in the casing. A mould have an attractive surface and is moveably disposed in the casing in such a manner that the attractive surface is attracted to the pushing portion of the pushing member; by pressing the mould, the pushing member will be moved out of and retracted into the casing, so that the mould can be changed easily.

Abstract: A punch change retainer for positioning a floating punch in a retracted, disengage position and an extended, engage position. The change retainer includes a change retainer body and a punch retainer receiving aperture extending upwardly through the change retainer body from a bottom surface thereof. A gagging member is located in the change retainer body and is actuable by an actuator between a retracted position distal from a nose portion of the change retainer body and an extended position adjacent the nose portion of the change retainer body. A floating punch retainer is receivable within the punch retainer receiving aperture, and includes an upper end positioned for engagement with the gagging member. A punch receiving hole is defined in the floating punch retainer; where the punch receiving hole is adapted to be rotatably positioned about a longitudinal center line of the floating punch retainer within the punch retainer receiving aperture.

Abstract: A punch includes a base with a base plate mounted thereto and a plurality of punch units are fixedly connected to the base plate by bolts. A plurality of connection holes and connection grooves are defined in the base plate, wherein the connection grooves communicate with the connection holes, and the connection holes and the connection grooves are arranged in a row. Each punch unit has a bottom plate and two positioning blocks extend from the bottom plate. The positioning blocks can be slid along the connection grooves so that the punch units can be easily shifted along the connection grooves to adjust the distances between the punch units.

Abstract: A punch for attachment to a brace of a braced die has a hollow cutting nose with a leading end for cutting a material to be punched and a trailing end opposite the leading end. A shaft extends from the trailing end of the nose and is sized to pass through an aperture in a brace. An upper retainer is joined to the shaft and has an upper retaining surface adapted to abut an upper surface of a brace. A lower retainer is joined to the shaft and has a lower retaining surface adapted to abut a lower surface of a brace. An internal waste evacuation chute extends from the interior of the hollow cutting nose and through the shaft for evacuating plugs of punched material from the nose.

Abstract: A blade or punch assembly for double-ended nibbler tools which affords easier removal by in part providing a blade having central portions of a single diameter equal to or slightly less than the composite bore through which it is adapted to extend.

Abstract: Adjustable length punch assemblies are disclosed. An adjustable length punch assembly in accordance with present invention may be used with a punch press including a tool holder adapted to receive punch assembly and a ram adapted to move longitudinally along a ram axis. An adjustable length punch assembly in accordance with present invention preferably includes a punch body assembly disposed in threading engagement with a drive body assembly having a surface adapted to be struck by ram of punch press. The length of punch assembly may be adjusted by rotating of one body relative to other body. The adjustable length punch assembly preferably includes a lock mechanism for selectively preventing rotation of the punch body assembly relative to the drive body assembly. The lock mechanism preferably comprises a lock shaft coupled to one of bodies and a lock key slidingly coupled to other of bodies such that lock key slides along a lock key path.

Abstract: A punch assembly used with a hydroforming die includes a punch cylinder for mounting to the hydroforming die and having a movable rod. The punch assembly also includes a punch for piercing an opening in a tubular member disposed in the hydroforming die. The punch assembly further includes a quick change assembly interconnecting the rod of the punch cylinder and the punch for allowing the punch to be removably attached to the punch cylinder.

Abstract: When a retainer collar 77 is rotated with respect to a punch guide 29 in a turnable manner, an upper punch driver 49 which pierces the retainer collar 77 so as to be movable up and down is rotated with respect to the punch guide 29. As a result, since the upper punch driver 49 is screwed into a lower punch driver 37 and is rotated with respect to the lower punch driver 37 provided on the punch guide 29 movablly up and down, an up-down positional relationship between the upper punch driver 49 and the lower punch driver 37 can be adjusted.

Abstract: A shuttle assembly for use with an end forming machine includes a shuttle and a release mechanism coupled to the shuttle. The shuttle includes a main body, a tool-receiving bore formed in the main body, and a lock mechanism associated with the tool-receiving bore. The lock mechanism is movable between a locked position where a ball detent of the lock mechanism is biased to extend into the tool-receiving bore and an unlocked position where the ball detent is removed from within the tool-receiving bore. The shuttle assembly further includes a release mechanism coupled to the shuttle for moving the locking mechanism from the locked position to the unlocked position. The release mechanism includes a release lever coupled to the shuttle for pivotable movement relative to the shuttle to engage the ball detent and move the ball detent out of the tool-receiving bore.

Abstract: Embodiments of an punch machine and a quick-change die assembly are shown and described. The die assembly may be quickly installed and removed from the punch machine, without bolting or unbolting of either machine housing or the die assembly itself. The die assembly is slid into the machine through a hole in the machine housing and into a position which mates part of the die assembly with the push-bar. A clamp, with a handle outside the machine, is then pivoted against the die assembly. The push-bar is adapted to be self-supporting without being bolted to the die assembly, keeping the push-bar in place without manual adjustment and alignment. The die assembly preferably includes a die, pin retainer, and punch pins, and preferably includes a flexible, pivotal, or hinged pin strap to secure the pins to the retainer.

Abstract: When a retainer collar 77 is rotated with respect to a punch guide 29 in a turnable manner, an upper punch driver 49 which pierces the retainer collar 77 so as to be movable up and down is rotated with respect to the punch guide 29. As a result, since the upper punch driver 49 is screwed into a lower punch driver 37 and is rotated with respect to the lower punch driver 37 provided on the punch guide 29 movably up and down, an up-down positional relationship between the upper punch driver 49 and the lower punch driver 37 can be adjusted.

Abstract: A holder and a support member for mounting a blade to a perforator are provided. The holder is composed of a blade, a two-position switching member, and a mounting member. The holder is assembled detachably to the support member along the external shape of the mounting member by operating the two-position switching member. The two-position switching member has an elastic compression member between it and the mounting member to impart elasticity to the operation, and has also an engaging section to fit into a groove in the support member, thereby ensuring the engaged state of the holder. The support member 150 includes a groove for mounting the blade and a clearance groove for punch cuttings above the groove.

Abstract: The invention concerns a device for die-cutting a stack of sheet-like materials, particularly labels, whereby the stack is pressed into the die-cutter blade by a relative movement of a punching ram and a hollow cylindrical die-cutter blade. For a device such as this, it is proposed that the die-cutter blade 18 is adjustably held in a frame 16, and the frame 16 is accommodated by a receiving apparatus 13 which is mounted in a punch platen 12 and is adjustable relative to it, whereby the frame 16 can be slid in a plane parallel to the punch platen 12, in particular is adjustable in the direction of two major axes that are essentially arranged perpendicular to one another, and can also be tilted out of the plane. Such a device allows for precise orientation of the die-cutter blade relative to the stack to be punched.

Abstract: A punch includes a base with a base plate mounted thereto and a plurality of punch units are fixedly connected to the base plate by bolts. Each punch unit has a bottom plate and a casing which is connected to the bottom plate so as to define a receiving slot between the bottom plate and the casing. A punch member movably extends through the casing and a spring is mounted to the punch member such that a lower end of the punch member may extend through the casing, the receiving slot, the bottom plate and the base plate. Two positioning blocks extend from the bottom plate and are engaged with a connection hole defined in the base plate so as to prevent the punch unit from sliding or rotating relative to the base plate. A handle is pivotably connected to the base plate and has a plurality protrusions on an underside thereof such that the punch members are pushed by the protrusions.

Abstract: A compensating blister die cutter apparatus is disclosed which has the purpose of cutting a sheet of blisters which have been formed on a sheet of plastic material in individual blisters which are generally symmetrical in configuration. The apparatus includes at least first and second blister die cutter units supported by a base member. Each of the blister die cutter units comprises a supporting member which includes a bottom board, a backup plate positioned on the bottom board, and a top board positioned on the backup plate. A rule slot is provided in the top board and a steel rule is located in the rule slot and has a cutting edge. A cavity is formed in the central portion of the bottom board, backup plate and top board as assembled to accommodate the blister shape during the cutting operation. A threaded member connects the bottom board, backup plate and top board together to move as a unit.

Abstract: The invention relates to a device for die cutting a stack consisting of sheet-type materials, in particular labels. According to said method, a movement of a stack to be cut in relation to a hollow cylindrical be pushed into said die-cutter blade. This type of device is characterized in that the die-cutter blade (18) is adjustably mounted in a frame (16), which can be inserted in a holding device (13) perpendicularly to the relative displacement direction (K) of the stacks to be cut (7) and die-cutter blades (18), and can be fixed in a central position. The holding device (13) is mounted in a die-cutter head plate (12), in such a way that it can be adjusted in relation to the latter. A die-cutter device of this type has an extremely compact construction, as a result of the positioning and mounting of the die-cutter blade in the direction of the relative movement of the stack to be cut and the die-cutter blade.

Abstract: Embodiments of an punch machine and a quick-change die assembly are shown and described. The die assembly may be quickly installed and removed from the punch machine, without bolting or unbolting of either machine housing or the die assembly itself. The die assembly is slid into the machine through a hole in the machine housing and into a position which mates part of the die assembly with the push-bar. A clamp, with a handle outside the machine, is then pivoted against the die assembly. The push-bar is adapted to be self-supporting without being bolted to the die assembly, keeping the push-bar in place without manual adjustment and alignment. The die assembly preferably includes a die, pin retainer, and punch pins, and preferably includes a flexible, pivotal, or hinged pin strap to secure the pins to the retainer.

Abstract: Adjustable length punch assemblies are disclosed. An adjustable length punch assembly in accordance with present invention may be used with a punch press including a tool holder adapted to receive punch assembly and a ram adapted to move longitudinally along a ram axis. An adjustable length punch assembly in accordance with present invention preferably includes a punch body assembly disposed in threading engagement with a drive body assembly having a surface adapted to be struck by ram of punch press. The length of punch assembly may be adjusted by rotating of one body relative to other body. The adjustable length punch assembly preferably includes a lock mechanism for selectively preventing rotation of the punch body assembly relative to the drive body assembly. The lock mechanism preferably comprises a lock shaft coupled to one of bodies and a lock key slidingly coupled to other of bodies such that lock key slides along a lock key path.

Abstract: A tool assembly is provided comprising a tool retainer having a bore formed therein and a tool disposed within the bore and extending outwardly from the tool retainer. The tool includes a radial groove formed at an end of the tool disposed within the bore that extends around the entire circumference of the tool. A locking mechanism is disposed within the bore and includes a ball biased into the groove for locking the tool to the tool retainer. The groove has a sloped face terminating in a cup portion. The cup portion and groove are shaped to receive the ball. The locking mechanism includes a passage extending from a side of the bore for receiving the ball. The passage is formed at a slight angle to the sloped face of the groove.

Abstract: A micro adjuster laterally moves a paper punch die. A modified fixed bracket with a larger fine-threaded hole is used to retain a hollow micro adjuster screw which is engaged by the fine threads of the bracket. The retaining screw that attaches to the die now does so by being inserted through the hollow body of the micro adjuster screw and out of a clearance hole at the distal end. Fine lateral adjustments of lateral alignment between the paper to be punched and the die can now be performed by moving the die laterally.

Abstract: A die pin retainer subassembly for use in a die assembly that slidably engages with a die punching machine comprises an elongated retainer, which includes at least one hole for receiving a die pin, and an elongated retaining bar disposed over the enlarged head of the die pin. At least one of the retainers on the retaining bar is in the form of a channel and the retainer and the retaining bar are sized and configured to nest along the lateral direction to minimize any relative lateral movement.

Abstract: Disclosed is a retainer device A for selectively changing the amount of projection of a punch 1 so that the punch projection amount is increased when the punch 1 is used for pressworking and, conversely the punch projection amount is decreased when the punch 1 is not used for pressworking In the retainer device A, guide pins 23 mounted on a cam 21 are moved in guide grooves 11 of a cam receiver 9 fastened to a punch holding body 2 so that the punch holding body 2 is forcibly moved up and down thereby causing the position of the punch 1 to switch between a use position and a non-use position.

Abstract: The invention concerns a device for die-cutting a stack of sheet-like materials, particularly labels, whereby the stack is pressed into the die-cutter blade by a relative movement of a punching ram and a hollow cylindrical die-cutter blade.

Abstract: The invention provides a ball-lock insert assembly adapted to be mounted axially in a mount opening formed in a holder plate having a desired thickness. The ball-lock insert assembly comprises an insert body having an axis and an elongated interior recess extending at an angle relative to this axis. The elongated interior recess is configured to house a resiliently-biased engagement member. The invention also provides retainer assemblies that include ball-lock assemblies, as well as methods of producing retainer assemblies, which methods include providing ball-lock assemblies.

Abstract: Embodiments of an punch machine and a quick-change die assembly are shown and described. The die assembly may be quickly installed and removed from the punch machine, without bolting or unbolting of either machine housing or the die assembly itself. The die assembly is slid into the machine through a hole in the machine housing and into a position which mates part of the die assembly with the push-bar. A clamp, with a handle outside the machine, is then pivoted against the die assembly. The push-bar is adapted to be self-supporting without being bolted to the die assembly, keeping the push-bar in place without manual adjustment and alignment. The die assembly preferably includes a die, pin retainer, and punch pins, and preferably includes a flexible, pivotal, or hinged pin strap to secure the pins to the retainer.

Abstract: An apparatus for providing an improved two-piece punch construction. The two-piece punch construction includes a supporting member and a punch body. The supporting member includes an aperture in which the punch body is accurately located. The supporting member further includes a supporting surface for supporting the punch body during a punching operation. The punch is constructed by providing at least one through-hole in the supporting member which receives a WEDM wire. The aperture for locating the punch body in the supporting member is made with a WEDM process. The supporting member and punch body are secured together by brazing material.

Abstract: A multiple variable punch assembly is configurable for punching holes and slits in a plastic film material. The assembly has frame is positioned below the plane of film with one or more transverse carriages positioned to slide on the sides of the frame. Each of the carriages has side plate members, and upper and lower rails extending across the frame in the transverse direction. The upper rail is positioned above the plane of the film and the lower rail is positioned directly below the upper rail and below the film web plane. The positions of the carriages can be adjusted along the frame in the machine direction. The punch head assemblies are adjustably mounted the carriages, with an upper plate fitted onto the upper carriage rail and a lower backing plate situated beneath it on the lower carriage rail. An alignment pin can be inserted into aligned holes for positioning the upper plate and the lower backing plate.

Abstract: The invention concerns a device for die-cutting a stack of sheet-like materials, particularly labels, whereby the stack is pressed into the die-cutter blade by a relative movement of a punching ram and a hollow cylindrical die-cutter blade.

Abstract: A punch retainer system includes one or more punch retainers that are selectively insertable into a retainer block. The punch retainers are dimensioned such that they can be positioned closely together and thereby allow punches to be arranged in a closely positioned arrangement. The punch retainers are insertable into a retainer block which includes recesses dimensioned to receive the punch retainers. The recesses are custom-cut in the desired arrangement by the tool and die shop. After insertion of the punch retainers into the retainer block, the punch retainer and retainer block assembly is secured to a die shoe. The punch retainers may include a releasable lock for selectively securing the punches in the punch retainers.

Abstract: A punch guide assembly is provided for removably carrying a stripper plate. The punch guide assembly comprises a punch guide and a stripper plate guide movable axially with respect to the punch guide. The stripper plate guide has a locked position wherein the stripper plate is secured to the punch guide assembly and an unlocked position wherein the stripper plate can be readily removed from the punch guide assembly. The stripper plate guide is resiliently biased axially toward its unlocked position yet is restrained against axial movement relative to the punch guide when in its locked position.

Abstract: Embodiments of an punch machine and a quick-change die assembly are shown and described. The die assembly may be quickly installed and removed from the punch machine, without bolting or unbolting of either machine housing or the die assembly itself. The die assembly is slid into the machine through a hole in the machine housing and into a position which mates part of the die assembly with the push-bar. A clamp, with a handle outside the machine, is then pivoted against the die assembly. The push-bar is adapted to be self-supporting without being bolted to the die assembly, keeping the push-bar in place without manual adjustment and alignment. The die assembly preferably includes a die, pin retainer, and punch pins, and preferably includes a flexible, pivotal, or hinged pin strap to secure the pins to the retainer.

Abstract: A die cutting block for forming die cuts from paper and other materials includes a base portion having a recess formed therein having a desired shape formed therein, an insert portion having an outer contour which substantially matches the contour of the recess and a blade interposed between and tightly held between the base portion and the insert portion. The blade extends above the base portion and insert portion to provide an exposed edge for cutting paper and the like into a desired shape.

Abstract: A die and method of gang punching selective holes in thin sheet materials such as greensheets are provided in which slugs of greensheet material formed during the punching operation easily fall through the die and are removed. The die uses a number of plates one of which is a window plate having openings correspond to openings in a die plate disposed thereon. The window plate openings have a larger diameter than the die plate openings and also a plurality have an oval shape which oval shape openings provide less resistance to the falling slugs and facilitate removal of the slugs from the die. The window plate also preferably has a central grid open area with the remainder of the plate having vertical through-holes corresponding to the through-holes of the die plate. The die also preferably employs a die plate made from at least two sheets of material, i.e.

Abstract: Embodiments of an punch machine and a quick-change die assembly are shown and described. The die assembly may be quickly installed and removed from the punch machine, without bolting or unbolting of either machine housing or the die assembly itself. The die assembly is slid into the machine through a hole in the machine housing and into a position which mates part of the die assembly with the push-bar. A clamp, with a handle outside the machine, is then pivoted against the die assembly. The push-bar is adapted to be self-supporting without being bolted to the die assembly, keeping the push-bar in place without manual adjustment and alignment. The die assembly preferably includes a die, pin retainer, and punch pins, and preferably includes a flexible, pivotal, or hinged pin strap to secure the pins to the retainer.

Abstract: An improved floating punch-holder for a punching apparatus comprising an assembly of a chuck having an upper portion and a lower portion. The upper portion of the chuck is provided to be securely attached to the punching apparatus. The chuck is provided to hold a shank having an upper portion and a lower portion, the upper portion of the shank being held by the chuck and the lower portion of said shank is connected to a punch. The punch is adapted to cooperate with a die located below the punch and centered with the punch. A centering assembly is adapted to accommodate the upper portion of the shank and is provided to facilitate a precise alignment and centering of the punch with the die. Centering assembly is detachably mounted to the lower portion of the chuck and is adapted to retain the position of the shank centered, even when the shank is removed for servicing. A locking assembly is adapted to immobily lock the upper portion of the shank to the lower portion of the chuck.

Abstract: A die pin retainer subassembly for use in a die assembly that slidably engages with a die punching machine comprises an elongated retainer, which includes at least one hole for receiving a die pin, and an elongated retaining bar disposed over the enlarged head of the die pin. At least one of the retainers on the retaining bar is in the form of a channel and the retainer and the retaining bar are sized and configured to nest along the lateral direction to minimize any relative lateral movement.

Abstract: A card cutting apparatus for cutting business cards out of paper stock. The card cutting apparatus includes a housing. The housing comprises a base portion and an upper portion. The base portion has an upper side and a lower side. The upper portion is hingedly coupled to the base portion such that the upper portion may be selectively positioned between an abutted position and a removed position with respect to the base portion. The upper portion has a top surface, a bottom surface, a front surface, a back surface and a pair of side surfaces. The bottom surface has a cavity therein. A rod is rotatably mounted in the upper portion, and extends through the side surfaces and through the cavity such that the rod has a pair of ends each extending away from one of the side surfaces. The rod extends through and securely attached to a cam. A handle member is coupled to each of the ends of the rod.

Abstract: A punch holder apparatus includes: a punch holder formed with a punch mounting hole and with an inspection hole in a direction perpendicular to a longitudinal direction of the punch holder; an engagement piece to be mounted in the inspection hole; a lock piece formed with a receiving allowable concave section to receive the engagement piece; and pressurizing means for pressurizing the lock piece so that an engagement piece pushing-out holding section provided to the lock piece is normally located in a position corresponding to the engagement piece. In the above construction, the lock piece is provided so as to be capable of moving in a direction parallel to the longitudinal direction of the punch holder. Furthermore, the receiving allowable concave section receives the engagement piece which is moved in the direction perpendicular to the longitudinal direction of the punch holder.

Abstract: A mold-pressing device including a seat body formed with a horizontal fissure at one end and a vertical chamber communicated with the fissure. A mold block is disposed in the chamber. One face of the mold block is disposed with a solid die, while the other face of the mold block is disposed with a channel passing through the mold block. A pressing lever is pivotally disposed in the channel of the mold block. A housing covers the seat body and is formed with a window for a pressing section of the pressing lever to extend therethrough. In use, a paper or a sheet is pushed into the fissure of the seat body and then the pressing section of the pressing lever is depressed, whereby a protuberance of the pressing lever is moved downward to force the mold block downward with the die punching the paper or the sheet placed in the fissure. Therefore, a product with a shape as that of the die is formed.

Abstract: Embodiments of an punch machine and a quick-change die assembly are shown and described. The die assembly may be quickly installed and removed from the punch machine, without bolting or unbolting of either machine housing or the die assembly itself. The die assembly is slid into the machine through a hole in the machine housing and into a position which mates part of the die assembly with the push-bar. A clamp, with a handle outside the machine, is then pivoted against the die assembly. The push-bar is adapted to be self-supporting without being bolted to the die assembly, keeping the push-bar in place without manual adjustment and alignment. The die assembly preferably includes a die, pin retainer, and punch pins, and preferably includes a flexible, pivotal, or hinged pin strap to secure the pins to the retainer.