Abstract: It is an object of the present invention to provide a cutting machine capable of keeping an angle of a cutting edge constant. A support block 14 is provided with two arms 14a, 14b which are spaced at a certain angle, and the arms 14a, 14b have rotation shafts 12a, 13a of rotary whetstones 12, 13, respectively, extending upright from the vicinities of the front ends thereof. The rotary whetstones 12, 13 has, at front ends thereof, flat surfaces 12b, 13b perpendicular to the rotation shafts 12a, 13a to grind the one side 11b and the other side 11c of the cutting edge 11a of the cutting blade 11, respectively. The whetstone holding mechanism 15 can be moved linearly along the guide shaft 16 and can change over grinding states in which the flat surfaces 12b, 13b of the rotary whetstones 12, 13 into contact with the one side 11b or the other side 11c of the cutting blade 11.

Abstract: It is an object of the present invention to provide a cutting machine capable of sharpening in such a manner that an angle of a cutting edge can be kept constant. A support block 14 is provided with two arms 14a, 14b which are spaced at a certain angle, and the arms 14a, 14b have rotation shafts 12a, 13a of rotary whetstones 12, 13, respectively, extending upright from the vicinities of the front ends thereof. The rotary whetstones 12, 13 has, at front ends thereof, flat surfaces perpendicular to the rotation shafts 12a, 13a to sharpen the one side 11b and the other side 11c of the cutting edge 11a of the cutting blade 11, respectively. The whetstone holding mechanism 15 can be moved in parallel linearly or can swing almost linearly, as mainly indicated by the arrow 15a, to bring the flat surface 12b of the rotary whetstone 12 into contact with the one side 11b of the cutting blade 11, as depicted by a broken line, thereby allowing the switch to the sharpening state.

Abstract: It is an object of the present invention to provide a cutting machine capable of keeping an angle of a cutting edge constant. A support block 14 is provided with two arms 14a, 14b which are spaced at a certain angle, and the arms 14a, 14b have rotation shafts 12a, 13a of rotary whetstones 12, 13, respectively, extending upright from the vicinities of the front ends thereof. The rotary whetstones 12, 13 has, at front ends thereof, flat surfaces 12b, 13b perpendicular to the rotation shafts 12a, 13a to grind the one side 11b and the other side 11c of the cutting edge 11a of the cutting blade 11, respectively. The whetstone holding mechanism 15 can be moved linearly along the guide shaft 16 and can change over grinding states in which the flat surfaces 12b, 13b of the rotary whetstones 12, 13 into contact with the one side 11b or the other side 11c of the cutting blade 11.

Abstract: It is an object of the present invention to provide a cutting machine capable of sharpening in such a manner that an angle of a cutting edge can be kept constant. A support block 14 is provided with two arms 14a, 14b which are spaced at a certain angle, and the arms 14a, 14b have rotation shafts 12a, 13a of rotary whetstones 12, 13, respectively, extending upright from the vicinities of the front ends thereof. The rotary whetstones 12, 13 has, at front ends thereof, flat surfaces perpendicular to the rotation shafts 12a, 13a to sharpen the one side 11b and the other side 11c of the cutting edge 11a of the cutting blade 11, respectively. The whetstone holding mechanism 15 can be moved in parallel linearly or can swing almost linearly, as mainly indicated by the arrow 15a, to bring the flat surface 12b of the rotary whetstone 12 into contact with the one side 11b of the cutting blade 11, as depicted by a broken line, thereby allowing the switch to the sharpening state.

Abstract: A vibration damping device is described that dampens vibration produced during the conversion of rotational motion into reciprocal motion. The damping is performed using a simple structure wherein first and second conversion mechanisms are symmetrically arranged with respect to a plane of symmetry, first and second rotating shafts rotate opposite to each other at a constant speed, and the rotational motion is converted into reciprocal motion. The total of mass acting on gravity centers of a first balancer and a second balancer is approximately equal to the total of mass reciprocally driven by a first driving shaft and a second driving shaft. Both gravity centers are positioned 180 degrees to the first driving shaft and second driving shaft across the axes of the first rotating shaft and second rotating shaft. As a consequence, the forces in the direction of an axis can be balanced suppressing vibration.

Abstract: [PROBLEMS] To provide a yarn feeder in the yarn feeding device of a weft knitting machine in which a fabric having uniform stitches can be produced with high productivity without increasing the size of the yarn feeder. [MEANS FOR SOLVING PROBLEMS] In a switching mechanism arranged to switch a yarn feeder from feeding position to standby position while interlocking with selection release operation of a hauling means after feeding the yarn by setting the oscillating direction to the standby position of the yarn feeder after feeding the yarn, a neutral position holding means operated to be interlocked with the hauling means to hold the neutral position of the yarn feeder in a vertical altitude raised above the yarn feeding position is provided.

Abstract: A yarn feeder comprises a switching mechanism which presets a swing direction of the yarn feeding port after completion of a yarn feeding operation, and, after having completed yarn feeding operation, changes over the swing of the yarn feeding port from one yarn feeding position to another standby position interlocking with the released selective operation of the entraining means, wherein the switching mechanism includes a neutral position holding mechanism operated in association with the entraining means so as to hold the yarn feeding port in a neutral position ascended higher than the yarn feeding position in upright state.

Abstract: A vibration damping device that damps vibration produced during the conversion of rotational motion into reciprocal motion. The damping is performed using a simple structure, and the device can be easily downsized. A first converting mechanism and a second converting mechanism are symmetrically arranged with an imaginary plane as a plane of symmetry, a first rotating shaft and a second rotating shaft rotate opposite to each other at a constant speed, and the rotational motion is converted into reciprocal motion by a first crank rod and a second crank rod. As a result, forces in a horizontal direction balance. The total of mass acting on gravity centers of a first balancer and a second balancer is approximately equal to the total of mass reciprocally driven by a first driving shaft and a second driving shaft. Further, both gravity centers are positioned so as to be opposed at 180 degrees to the first driving shaft and second driving shaft across the axes of the first rotating shaft and second rotating shaft.

Abstract: Yarn feeders are arranged such that feeder case portions are slidably engaged with a knitting yarn guide rail disposed on an upper portion of needle beds, and can be selectively brought by a bringing device. Each of the feeder cases is provided with a switching mechanism for switching a yarn feeding port to a feeding position and a waiting position by swinging the port. The switching mechanism is operated at a time during which a yarn feeder selected by the bringing device is brought from a stop state in order to feed yarn. The yarn feeding port is switched from the waiting position to the feeding position, a swinging direction of the yarn feeding port to the waiting position, after it feeds yarn, is set, and the yarn feeding port can be switched from the feeding position to the waiting position in association with a selection cancel operation of the bringing device after the yarn is fed.

Abstract: A flat knitting machine (1) comprising a number of needles (15) arranged in needle grooves (13) formed on needle beds (5, 6) in such a manner as to be freely advanced or retracted; sinkers (41, 123), arranged between the needles (15, 15), to work to form loops; and at least a pair of front and back needle beds having a front edge portion (53, 121) and arranged to confront each other across a needle bed gap, wherein the sinker (41, 123) and the front edge portion (53, 121) of the needle bed are both supported on the needle bed in such a manner as to be movable in an advancing and retracting direction of the needle and also control means (60, 151) is provided for controlling an advanced or retracted motion of both of the sinker (41, 123) and the front edge portion (53, 121) of the needle bed, to adjust a dimension of the needle bed gap between the front and back needle beds (5, 6).

Abstract: Yarn feeders are arranged such that feeder case portions are slidably engaged with a knitting yarn guide rail disposed to the upper portion of needle beds and can be selectively brought by bringing means, each of feeder cases is provided with a switching mechanism for switching a yarn feeding port to a feeding position and a waiting position and swinging it thereat, the switching mechanism is operated in a time during which a yarn feeder selected by the bringing means is brought from a stop state in order to feed yarn, the yarn feeding port is switched from the waiting position to the feeding position as well as a swinging direction of the yarn feeding port to the waiting position after it feeds yarn is set and the yarn feeding port can be switched from the feeding position to the waiting position in association with the selection cancel operation of the bringing means after it feeds the yarn.

Abstract: A flat knitting machine (1) comprising a number of needles (15) arranged in needle grooves (13) formed on needle beds (5, 6) in such a manner as to be freely advanced or retracted; sinkers (41, 123), arranged between the needles (15, 15), to work to form loops; and at least a pair of front and back needle beds having a front edge portion (53, 121) and arranged to confront each other across a needle bed gap, wherein the sinker (41, 123) and the front edge portion (53, 121) of the needle bed are both supported on the needle bed in such a manner as to be movable in an advancing and retracting direction of the needle and also control means (60, 151) is provided for controlling an advanced or retracted motion of both of the sinker (41, 123) and the front edge portion (53, 121) of the needle bed, to adjust a dimension of the needle bed gap between the front and back needle beds (5, 6).

Abstract: A yarn carrier comprises a carrier base, a reciprocator, a feeder, and a movement converter. The reciprocator is supported on the carrier base to move in reciprocation with a traveling direction of the carrier base. An engaging surface is temporarily engageable with an accompanying member of a carrier accompanying device. The feeder, has a main-yarn feeding hole and a plating-yarn feeding hole, and supports at least one of the yarn feeding holes to freely rotate about an axis in a longitudinal direction of the feeder. The movement converter converts reciprocating movement of the reciprocator into rotation movement of the yarn feeding holes provided in the feeder, such that when the reciprocator is moved with its engaging surface engaged with the accompanying member, the yarn feeding holes can be rotationally displaced to change a positional relationship between the main-yarn feeding hole and the plating-yarn feeding hole.

Abstract: A yarn carrier comprises a carrier base; reciprocating means supported on the carrier base in such a manner as to move in reciprocation with respect to a traveling direction of the carrier base and having, at an outside of the engaging portion of the carrier base with respect to the traveling direction, an engaging surface temporarily engageable with the accompanying member of the carrier accompanying means; feeder means having, at its front end, a main-yarn feeding hole and a plating-yarn feeding hole, extending vertically downwardly from the carrier base, and supporting at least one of the yarn feeding holes in such a manner as to freely rotatable about an axis in a longitudinal direction of the feeder means; and movement conversion means for converting reciprocating movement of the reciprocating means into rotation movement of the yarn feeding holes provided in the feeder means in such a manner that when the reciprocating means is moved with its engaging surface engaged with the accompanying member, the ya

Abstract: An end yarn inserting device that is so constructed that an end yarn hook can be put into action only when necessary but otherwise be retreated to such a position in the vicinity of a needle bed gap as to avoid interfering with knitting members including a yarn feeder and knitting needles.

Abstract: A flat knitting machine has a blower that is connected to a nozzle via a plastic tube, a base duct and a joint. The base duct is mounted on a rear cover of the flat knitting machine parallel to a needle bed and is rectangular in section. A long slit covered by a belt is provided on top of the base duct. The joint has three rollers, two of which make the belt contact the slit. The third roller peels the belt from the slit to connect the nozzle and the base duct. When the nozzle is connected to the carriage and travels over the needle beds, the needle beds are cleaned.

Abstract: A flat knitting machine comprising: at least a pair of front and rear needle beds defining a gap therebetween; and a set-up device disposed below said gap, said set-up device including: a plurality of setting-up needles, each having a setting-up needle base member and a setting-up needle slider member, the setting-up needle slider member being movable relative to the setting-up needle base member to selectively hold and release a set-up portion of a knitted fabric; a setting-up needle bed supporting the plurality of setting-up needles so that the plurality of setting-up needles are juxtaposed to one another and that each of the setting-up needles is movable in both a fabric pull-down direction and a direction opposite thereto; first biasing means for biasing each of the setting-up needles in the fabric pull-down direction relative to the setting-up needle bed; and setting-up needle hold and release means for moving the setting-up needle slider member relative to the setting-up needle base member to thereby co

Abstract: Knitting fabric take-down devices, located in front and back of and facing each other across a knitting fabric passageway formed under a needle bed gap between at least a pair of front and back needle beds of a flat knitting machine, for taking down a knitting fabric. Each of the knitting fabric take-down device includes a front knitting fabric take-down mechanism for capturing only a front part of the knitting fabric in the knitting fabric passageway and taking it down; a back knitting fabric take-down mechanism for capturing only a back part of the knitting fabric and taking it down; and a take-down force adjusting mechanism for adjusting a take-down force of each of the knitting fabric take-down mechanism.

Abstract: A cutting head is provided also with a notching blade to enable it to cut a length shorter than the blade width of a round blade. In order to eliminate the need for compressed air supplying equipment and simplify the mechanism thereby to make it compact and light weight, an angular displacement servo motor is used as a common drive source for causing angular displacement of the round blade and angular displacement of the notching blade. A cam motor causes a round blade cam and a notching blade cam to make angular displacement thereby to selectively cause the round blade and the notching blade to work on sheet material placed on a cutting table an cut it.

Abstract: An apparatus for collecting cigarette smoke, ashes and cigarette ends is provided with a water path tube 5 disposed below a base plate 2 and has an appropriate inclination angle. Ash tray sections 3 are disposed on the upper surface of the base plate 2 at appropriate intervals. A water circuit includes a water tank 6 disposed at the downstream side of the water path tube 5, a pump 7 for feeding water in the water tank 6 to the upstream side of the water path tube 5 and a water feeding tube 8 connecting the pump 7 and the upstream side of the water path tube 5. A water splash prevention section 9 is fitted on the upper end of the water tank 6. A suction port 10 is disposed on the upper surface of the water path tube 5, a suction tube 11 communicates with the suction port 10, and a suction section 12 consisting of a blower is connected to the suction tube 11 for sucking smoke into the water path tube 5.