Abstract: A positioning assembly using a pair of rollers elastically connected to a holding base for clamping two cutters received in the holding base. The cutters in the holding base can be adjusted to make different blades contact and align precisely.

Abstract: A barrel includes a supporting part at one end of the barrel adjacent to an image side, and a plurality of protrusions formed on an inner surface of the barrel. Each protrusion includes a guiding surface and an engaging surface connected with the guiding surface. Each guiding surface is oblique relative to a central axis of the barrel. A distance between the central axis and a portion of the guiding surface adjacent to the image side is larger than that between the central axis and another portion of the guiding surface next to an object side. The engaging surface and the supporting part cooperatively clamp optical components in the barrel.

Abstract: A voice coil motor includes a stationary member and a moveable member. The stationary member defines a central axis. The stationary member includes a first receiving room, four sidewalls surrounding the first receiving room and four guide rails formed on the respective sidewalls and located in the receiving room. The moveable member is received in the stationary frame. The moveable member includes a moveable frame. The moveable frame includes four side surfaces. A plurality of restricting posts extend from each side surface and are aligned in a line parallel to the corresponding guide rail. The restricting posts slidably engage in the corresponding guide rails.

Abstract: A grasping device for grasping a lens runner system is disclosed. The grasping device includes a support having a connecting rod, four claws arranged around the connecting rod, a driving sleeve, and an actuator. Each claw includes a first end and a second end opposite to the first end and tapers from the second end to the first end. The first end is elastically connected to the connection rod. Each two adjacent claws define a gap for receiving the lens runner system. The driving sleeve sleeves into the claws from the first end. The actuator is supported by the support and configured for driving the driving sleeve to move relative to the second end.

Abstract: A multi-cavity mold includes a female die and a male die for molding products with the female die. The female die core includes a female die body and a number of female die cores received in the female die body. The male die consists of a male die body, a number of male die cores each corresponding to one female die core received in the male die body, and an ejection member. The male die body consists of a first plate, a second plate connected to the first plate, and a plurality of restricting plates corresponding to the plurality of male die cores. The first plate defining a number of male die cavities each receive a corresponding male die core therein. The restricting plates are fixed onto the first plate and configured to restrict the male die cores in the corresponding male die cavities.

Abstract: An exemplary mold includes a core plate receiving a core insert, a cavity plate receiving a cavity insert, and an ejection mechanism for ejecting the core insert. The core insert defines a first molding surface, and the cavity insert defines a second molding surface cooperating with the first molding surface. The ejection mechanism includes a top plate, a bottom plate, and an ejection member fixed to the top plate. The ejection member includes an ejection rod and an ejection head. The ejection rod includes a first rod, and a first engaging body forming a protrusion facing toward the first rod. The ejection head includes a second rod, a second engaging body defining a recess facing toward the second rod, and an ejection portion engaged with the core insert. The protrusion is movably engaged in the recess, so that if the ejection rod goes off-axis, the core insert can stay on-axis.

Abstract: A camera module includes a circuit board, an image sensor, a barrel, a lens holder, a base board, and a number of clamping elements. The circuit board has a mounting surface. The image sensor is mounted on the mounting surface of the circuit board and includes an image plane. The barrel has two lens received therein. The lens holder is coupled to the barrel and receives the image sensor. The base board is arranged around the lens holder, and the base board is attached to the lens holder and attached on the mounting surface of the circuit board. The clamping elements clamp the base board on the circuit board, such that an optical axis of the barrel is maintained substantially coaxially aligned with a normal of the image plane.

Abstract: A lens holder for receiving a lens barrel includes a base portion and a barrel portion. The base portion defines a first circular chamber and a second chamber communicating with the first chamber. The first chamber has a diameter equal to an outer diameter of the lens barrel. The second chamber receives an image sensor. The barrel portion extends coaxially from the base portion. The sidewall of the barrel portion defines a number of through slots extending along a direction parallel to the central axis of the barrel portion.

Abstract: A mold comprises a core plate receiving a core insert, a cavity plate receiving a cavity insert and an ejection mechanism configured to eject the core insert. The core insert defines a first molding surface and the cavity insert defines a second molding surface cooperating with the first molding surface. The ejection mechanism includes a top plate; a sleeve fastening to the core plate and an ejection member to eject the core. The ejection member including an ejection rod and an ejection head slidably received in the sleeve. The ejection rod includes a main rod fastened to the top plate, a connecting body, and an engaging body. The ejection head includes an ejection portion and an engaging portion defining an engaging hole, a slot, and an opening, wherein the connecting body extends through the slot causing the engaging body to engage with the engaging hole.

Abstract: A voice coil motor includes a movable barrel and a spring plate. The movable barrel includes a top end and a number of locating members. Each locating member includes a locating post on the top end, and a blocking portion on the locating post. The spring plate includes a top surface, a bottom surface, and an inner frame. The spring plate defines a through hole passing through the top surface and the bottom surface. The inner frame surrounds the through hole. The inner frame defines a number of locating holes. Each locating hole receives a corresponding locating post. The spring plate is positioned between the blocking portions and the top end. The blocking portions lock the inner frame to the movable barrel. The inner surface of each locating hole defines spaced gaps. Each gap passes through the top and the bottom surfaces.

Abstract: A voice coil motor includes a stationary member and a moveable member. The stationary member defines a central axis. The stationary member includes a first receiving room, four sidewalls surrounding the first receiving room and four guide rails formed on the respective sidewalls and located in the receiving room. The moveable member is received in the stationary frame. The moveable member includes a moveable frame. The moveable frame includes four side surfaces. A plurality of restricting posts extend from each side surface and are aligned in a line parallel to the corresponding guide rail. The restricting posts slidably engage in the corresponding guide rails.

Abstract: A camera module includes a circuit board, an image sensor, a barrel, a lens holder, a base board, and a number of clamping elements. The circuit board has a mounting surface. The image sensor is mounted on the mounting surface of the circuit board and includes an image plane. The barrel has two lens received therein. The lens holder is coupled to the barrel and receives the image sensor. The base board is arranged around the lens holder, and the base board is attached to the lens holder and attached on the mounting surface of the circuit board. The clamping elements clamp the base board on the circuit board, such that an optical axis of the barrel is maintained substantially coaxially aligned with a normal of the image plane.

Abstract: A fixing device includes a stationary frame and a number of elongated resilient tabs. The stationary frame defines a central axis and includes four sidewalls for receiving a number of magnets. Each sidewall includes a receiving hole and at least one protrusion formed on each sidewall at a lower portion thereof. A slot is defined in each protrusion. The tabs correspond to the magnets. Each tab includes an engagement portion, an angled portion, and a contact portion. The angled portion is interconnected between the engagement portion and the contact portion. The engagement portions engage in the respective slots. The contact portions resiliently abut against the corresponding magnets. Each tab is configured to apply a force on the corresponding magnet in a direction toward the central axis.

Abstract: A lens holder for receiving a lens barrel includes a base portion and a barrel portion. The base portion defines a first circular chamber and a second chamber communicating with the first chamber. The first chamber has a diameter equal to an outer diameter of the lens barrel. The second chamber receives an image sensor. The barrel portion extends coaxially from the base portion. The sidewall of the barrel portion defines a number of through slots extending along a direction parallel to the central axis of the barrel portion.

Abstract: A removing device includes a fixture, an extendable and retractable arm, a heating rod, and a rotatable head. The fixture includes a top surface, a bottom surface, and a hole extending from the top surface to the bottom surface. The arm is threadedly engaged in the hole. The heating rod is coupled to an end of the arm. The heating rod includes a first portion inserted in the hole and coupled to the arm, and a second portion protruding from the bottom surface. The heater heats the heating rod. The rotatable head is rotatable relative to the fixture to move the heating rod between an extended position and a retracted position. In the extended position, the second portion heats the base material of the broken portion of a runner system. In a retracted position, the broken portion of the lens runner system is moved away from the injection mold.

Abstract: An auxiliary carrying device for carrying an object includes a strap, a handle, and a lacing assembly. The strap surrounds the object and includes a fixing end and a free end. The free end defines a number of through holes along the length thereof. Two ends of the handle are connected to the strap. The lacing assembly includes a connecting element and an adjusting element. The connecting element is fixed to the fixing end. The adjusting element is connected to the connecting element and comprises a post. The post is capable of inserting one of the through holes to connect the free end with the connecting element.

Abstract: A hex wrench includes a main body, a handle connected with the main body, a rotary member, a lifting member, a driving member, and a matching member. The rotary member includes an operation portion and a shaft portion. The driving member includes six host driving members and six guest driving members. The matching member includes six matching blocks. The shaft portion passes through the main body. One end of the shaft portion is connected to the operation portion, the other opposite end is connected to the lifting member. One end of each host driving member is rotatably connected with the lifting member, the other end is rotatably connected with a middle portion of a corresponding guest driving member. One end of each guest driving member is rotatably connected with the main body, the other end is rotatably connected to a corresponding matching block.

Abstract: An injection molding machine includes a moving platen. The moving platen includes a fixed support and an ejector assembly. The fixed support includes a first and a second adjustment motors, and a first and a second adjustment shafts. The first and second adjustment motors are connected to the first and second adjustment shafts respectively. The ejector assembly includes two guide shells, two drive shafts, two ejector pins, and two guide protrusions. Each guide shell is positioned in the fixed support and receives one drive shaft and one ejector pin. Each drive shaft engages with a corresponding ejector pin and is capable of driving the corresponding ejector pin to move back and forth in the guide shell. Each guide protrusion extends outwards from a corresponding guide shell. Each of the first and second adjustment shafts engages with a corresponding guide protrusion and is capable of moving the corresponding guide protrusion.

Abstract: A pipe connector for connecting to a first pipe includes a second pipe and a fastener. The second pipe has a number of connection sections of difference outer diameters, one of which is fittingly coupled to the first pipe. The fastener sleeves on the first pipe and the second pipe and fastens the first pipe to the second pipe.

Abstract: An apparatus for measuring an inside diameter of hole of a workpeice comprises a main body, two probing legs, two pressure sensors, a controller unit, a display unit, and a step-motor. The two probing legs have a first end and a two second end. Two pressure sensors are respectively mounted on the second end and configured from generating a pressure signal in response to a reacting force applied thereon by an inner wall in the hole. The step-motor is configured for driving the two probing legs to rotate so as to enable the pressure sensors to about against the inner wall. The controller unit is configured for controlling the step driving the probing legs to rotate in response to the pressure signal and computing a rotation angle of each probing leg. The display unit is configured for display the inside diameter of a the hole.