Cam transmission terminal cutting and pin inserting mechanism

Abstract

According to the cam transmission terminal cutting and pin inserting mechanism, the two conjugate cam sets are matched with the first swing rod, and the upper cutting die and the lower cutting die are respectively driven to move in the opposite directions. The conjugate cam group has the advantages of high precision and stable operation, and is matched with the connecting rod for transmission, so that the transmission distance between the cutting transmission unit and the cutting unit can be effectively increased. The pin driving unit is composed of the transverse moving driving mechanism and the vertical driving mechanism, so that the pin position can be changed in the height direction, and the requirements of different pin positions can be met. The advantage of high stability of the conjugate cam group is utilized, a cam transmission structure is designed, and all the structures are coordinated, compact and stable. The whole mechanism can be used as a base body of a terminal cutting contact pin, and the machine frame is installed at a needed position to achieve quick change. The production efficiency can be greatly improved, and the standardization of the cutting pin module can be realized more easily.

Description

Technical Field

[0001] The utility model relates to terminal processing equipment, in particular to a cam driven terminal cutting and pin insertion mechanism. Background Art

[0002] The cam mechanism is a common motion mechanism. The follower contacts the surface profile of the cam, converting the cam's rotary motion into a specified reciprocating motion. Compared with the connecting rod mechanism, the cam mechanism is easier to prepare, and the trajectory of movement depends on the design of the cam profile, with a high degree of freedom. The operation of the cam mechanism requires good contact between the follower and the cam profile to limit the movement of the follower along the cam profile. Common cam mechanisms will have a roller on the follower, which is connected to the cam groove on the cam by rolling; there are also rollers that are set on the cam profile, relying on their own gravity or external elastic force to keep the wheel and cam in contact.

[0003] The applicant provided a terminal cutting pin device in the utility model patent with announcement number CN221041901U, which controls the upper cutting die and the lower cutting die to move toward each other through two coaxially arranged cams. However, the cam of this device is directly connected to the upper cutting die and the lower cutting die through a lever structure, the transmission distance is small, and the cam mechanism is limited to a position close to the upper cutting die and the lower cutting die, which is not conducive to the expansion design of the terminal cutting device. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a cam-driven terminal cutting and pin insertion mechanism, comprising a frame, a cutting unit, a cutting transmission unit, a pin insertion unit and a pin insertion drive unit arranged on the frame, characterized in that: the cutting unit comprises a cutting seat arranged on the frame, a storage table for placing materials is arranged on the cutting seat, and a cutting upper die and a cutting lower die are arranged above and below the storage table respectively, and the cutting upper die and the cutting lower die move relatively under the drive of the cutting transmission unit;

[0005] The cutting transmission unit comprises a rotating main shaft rotating along its center, on which two groups of conjugate cam groups formed by two coaxially arranged cams are coaxially arranged, and the cutting upper die and the cutting lower die are respectively connected to a group of conjugate cam groups in transmission.

[0006] Furthermore, a rocker arm 1 is arranged between the two cams of the same conjugate cam group. The rocker arm 1 is a lever-type structure, having a fulcrum rotatably connected to the frame and a driving end and a driven end at angles to each other. The driving end and the driven end are respectively rollingly connected to the contour surfaces of the two cams, and the driven ends of the two conjugate cam groups are respectively transmission-connected to the upper cutting mold and the lower cutting mold.

[0007] Furthermore, the rocker arm 1 is provided with roller followers on the sides of the driving end and the driven end respectively, and the roller followers are connected with the contour surfaces of the two groups of cams.

[0008] Furthermore, the cutting seat is provided with a second rocker arm at a position close to the cutting upper die, and the second rocker arm is a lever-type structure, and the fulcrum of the second rocker arm is rotatably connected to the cutting seat; the driven end of the second rocker arm is connected to the end of the cutting upper die, and the driving end of the second rocker arm and the driven end of the first rocker arm corresponding to the cutting upper die are connected through a connecting rod.

[0009] Furthermore, the cutting seat is provided with a guide block at a position close to the cutting lower die, the guide block is slidably arranged in the cutting seat and one end of the guide block is rotatably connected to the driven end of the swing rod 1 corresponding to the cutting lower die;

[0010] A guiding bevel groove is arranged on the guiding block, and a guiding roller which moves in coordination with the guiding bevel groove is arranged on the cutting lower die.

[0011] Furthermore, the rotary driving member of the cutting transmission unit is a rotary motor fixedly arranged on the frame.

[0012] Furthermore, the pin drive unit includes a transverse driving mechanism for controlling the pin insertion action of the pin unit, and a vertical driving mechanism for controlling the vertical movement of the pin unit. The transverse driving mechanism is connected to the output end of the vertical driving mechanism, and the pin unit is connected to the output end of the transverse driving mechanism.

[0013] Furthermore, the transverse driving mechanism and the vertical driving mechanism are both motor screw structures.

[0014] Furthermore, the pin unit comprises a front support and a rear support, the front support is provided with an insertion rod along the driving direction of the transverse driving mechanism, and the front support and the rear support are elastically connected by a spring.

[0015] Furthermore, the front support and the rear support are respectively connected to a front detection block and a rear detection block, and the front detection block is connected to a displacement sensor and extends to the rear side of the rear detection block.

[0016] The utility model provides a cam-driven terminal cutting pin mechanism, which cooperates with two sets of conjugate cam groups and a rocker rod to respectively drive the cutting upper die and the cutting lower die to move toward each other. The conjugate cam group has the advantages of high precision and stable operation, and cooperates with the connecting rod to effectively increase the transmission distance of the cutting transmission unit and the cutting unit.

[0017] The plug-in pin drive unit of the utility model is composed of a transverse drive mechanism and a vertical drive mechanism, and can realize the change of the plug-in pin position in the height direction to meet the requirements of different plug-in pin positions.

[0018] The utility model takes advantage of the high stability of the conjugate cam group and designs a cam transmission structure. The various structures are coordinated, compact and stable. The entire mechanism can be used as the base of the terminal cutting pin, and can be installed at the required position through the frame to achieve quick replacement. It can greatly improve production efficiency and make it easier to achieve standardization of the cutting pin module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a cam-driven terminal cutting and inserting pin mechanism of the utility model;

[0020] Figure 2 It is a connection diagram of the cutting unit and the cutting transmission unit;

[0021] Figure 3 It is a schematic diagram of the structure of the upper cutting die driven by the conjugate cam group;

[0022] Figure 4 It is a structural schematic diagram of the cutting lower die driven by the conjugate cam group;

[0023] Figure 5 It is a schematic diagram of the structure of the pin drive unit;

[0024] Figure 6 It is a structural schematic diagram of the pin unit.

[0025] Reference numerals: frame 10;

[0026] Cutting unit 20, cutting seat 21, storage table 22, cutting upper die 23, cutting lower die 24;

[0027] Cutting transmission unit 30, rotating spindle 31, conjugate cam group 32, swing rod 1 33, roller follower 34, swing rod 2 35, connecting rod 36, guide block 37, guide chute 38, guide roller 39, rotating motor 310;

[0028] Insertion pin unit 40, insertion rod 41, front support 42, rear support 43, spring 44, front detection block 45, rear detection block 46, displacement sensor 47;

[0029] Pin drive unit 50, lifting plate 51, screw motor 1 52, transmission screw 1 53, screw motor 2 54, transmission screw 2 55. DETAILED DESCRIPTION

[0030] like Figure 1A cam-driven terminal cutting and pin insertion mechanism shown in the figure includes a frame 10, a cutting unit 20, a cutting transmission unit 30, a pin insertion unit 40, and a pin insertion drive unit 50 arranged on the frame 10. The cutting unit 20 includes a cutting seat 21 arranged on the frame 10, and a storage table 22 for placing materials is provided on the cutting seat 21. A cutting upper mold 23 and a cutting lower mold 24 are respectively arranged above and below the storage table 22. The cutting upper mold 23 and the cutting lower mold 24 move relatively under the drive of the cutting transmission unit 30 to cut the terminal material on the storage table 22.

[0031] like Figure 2 As shown, the cutting seat 21 is vertically provided with slide grooves above and below the storage table 22, and the cutting upper mold 23 and the cutting lower mold 24 are respectively installed in the slide grooves to limit the cutting upper mold 23 and the cutting lower mold 24 from sliding vertically along the slide grooves.

[0032] The cutting transmission unit 30 includes a rotating main shaft 31 driven to rotate by a rotating driving member, and two groups of cam groups are coaxially arranged on the rotating main shaft 31. The cutting upper die 23 and the cutting lower die 24 are respectively connected to a conjugate cam group 32 formed by two coaxially arranged cams. A swing rod 1 33 is arranged between the two groups of cams. The swing rod 1 33 is a lever-type structure, having a fulcrum rotatably connected to the frame 10 and a driving end and a driven end at an angle to each other. Roller followers 34 are respectively arranged on the driving end and the driven end. The roller followers 34 are located on both sides of the swing rod 1 33 and are respectively connected to the contour surfaces of the two groups of cams.

[0033] Specifically, the driving end of the swing rod 1 33 is connected to the main cam of the conjugate cam group 32 in a rolling manner, and the driven end of the swing rod 1 33 is connected to the return cam of the conjugate cam group 32 in a rolling manner. The driven end is connected to the upper cutting die 23 and the lower cutting die 24 through a transmission mechanism according to specific needs to control the vertical movement of the upper cutting die 23 and the lower cutting die 24. The conjugate cam group 32 of the swing rod 1 33 limits the rotation track of the swing rod 1 33 with two cams, and the swing rod 1 33 can be kept in contact with the cam surface without an additional force-applying component, which has the advantage of high precision.

[0034] Figure 3 The structure in which the cutting upper die 23 is driven by the conjugate cam group 32-1 is shown. The cutting seat 21 is provided with a second swing rod 35 at a position close to the cutting upper die 23. The second swing rod 35 is also a lever-type structure, and the fulcrum of the second swing rod 35 is rotatably connected to the cutting seat 21; the driven end of the second swing rod 35 is connected to the end of the cutting upper die 23, and the driving end of the second swing rod 35 is connected to the driven end of the first swing rod 33 of the corresponding cutting upper die 23 through a connecting rod 36. The rotation stroke of the rotating main shaft 31 is successively converted into the vertical stroke of the cutting upper die 23 through the conjugate cam group 32-1, the first swing rod 33-1, the connecting rod 36, and the second swing rod 35.

[0035] Figure 4 The structure of the cutting lower die 24 being driven by the conjugate cam group 32-2 is shown. The cutting seat 21 is provided with a guide block 37 at a position close to the cutting lower die 24. The guide block 37 is slidably arranged in the cutting seat 21 and one end of the guide block 37 is rotatably connected to the driven end of the swing rod 33-2 corresponding to the cutting lower die 24; the guide block 37 is provided with a guide bevel 38, and the cutting lower die 24 is provided with a guide roller 39 that moves in coordination with the guide bevel 38. The rotation stroke of the rotating spindle 31 is sequentially converted into the vertical stroke of the cutting lower die 24 through the conjugate cam, the swing rod 33-2, the guide block 37, and finally through the cooperation of the guide bevel 38 and the guide roller 39.

[0036] In this embodiment, the rotating driving member of the cutting transmission unit 30 is a rotating motor 310 fixedly arranged on the frame 10. The output end of the rotating motor 310 is connected to the end of the rotating main shaft 31 through a pulley assembly, driving each cam to rotate along the center of the rotating main shaft 31.

[0037] like Figure 5 As shown, the pin drive unit 50 includes a transverse driving mechanism for controlling the pin insertion action of the pin unit 40, and a vertical driving mechanism for controlling the vertical movement of the pin unit 40. The output end of the vertical driving mechanism is connected to a lifting plate 51, and the transverse driving mechanism is arranged on the lifting plate 51. The pin unit 40 is connected to the output end of the transverse driving mechanism.

[0038] In this embodiment, the transverse driving mechanism is a screw transmission structure, including a screw motor 52 fixedly mounted on a lifting plate 51 and a transmission screw 53 connected to the output end of the screw motor 52, and the pin unit 40 is fixedly connected to the slider of the transmission screw 53.

[0039] In this embodiment, the vertical drive mechanism is also a screw transmission structure, including a screw motor 54 fixed on the frame 10 and a transmission screw 55 connected to the output end of the screw motor 54 through a pulley structure, and the lifting plate 51 is connected to the slider of the transmission screw 55.

[0040] like Figure 6 As shown, the pin unit 40 includes a support block, and the support block is provided with an insertion rod 41 along the driving direction of the transverse driving mechanism. The end of the insertion rod 41 is provided with a socket for inserting the terminal. The transverse driving mechanism drives the insertion rod 41 forward. After the terminal is cut, it is inserted into the socket and then driven by the transverse driving mechanism to be inserted into the target plastic body; and the vertical driving mechanism can move the insertion rod 41 vertically to lift the terminal to different heights to meet different socket height requirements.

[0041] In this embodiment, the support block includes a front support 42 and a rear support 43 which are arranged front and rear along the driving direction of the transverse driving mechanism, and the insertion rod 41 is arranged on the front support 42. The front support 42 and the rear support 43 are elastically connected by a spring 44. When the support block moves toward the terminal, the terminal will receive a reaction force applied by the terminal during the insertion process, and the front support 42 will move in the direction of the rear support 43 and squeeze the spring 44. The distance between the front support 42 and the rear support 43 can be determined by a sensor, and the state of the insertion pin can be determined to avoid the occurrence of pin overload, such as by setting a pressure sensor between the front support 42 and the rear support 43.

[0042] In this embodiment, a displacement sensing structure is provided, in which a front detection block 45 and a rear detection block 46 are respectively connected to the front support 42 and the rear support 43. A displacement sensor 47 is connected to the front detection block 45 and extends to the rear side of the rear detection block 46. The distance between the front detection block 45 and the rear detection block 46 is determined by feedback from the displacement sensor 47.

[0043] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A cam-driven terminal cutting and pin insertion mechanism, comprising a frame (10), a cutting unit (20) arranged on the frame (10), a cutting transmission unit (30), a pin insertion unit (40), and a pin insertion drive unit (50), characterized in that: The cutting unit (20) comprises a cutting seat (21) arranged on the frame (10), a storage table (22) for placing materials is arranged on the cutting seat (21), a cutting upper die (23) and a cutting lower die (24) are arranged above and below the storage table (22), respectively, and the cutting upper die (23) and the cutting lower die (24) are relatively movable under the drive of the cutting transmission unit (30); The cutting transmission unit (30) comprises a rotating main shaft (31) rotating along its center, and two groups of conjugate cam groups (32) formed by two coaxially arranged cams are coaxially arranged on the rotating main shaft (31), and the cutting upper die (23) and the cutting lower die (24) are respectively connected to a group of conjugate cam groups (32) in driving connection.

2. A cam-driven terminal cutting pin mechanism as claimed in claim 1, characterized in that: A swing rod (33) is arranged between the two cams of the same conjugate cam group (32). The swing rod (33) is a lever-type structure, having a fulcrum rotatably connected to the frame (10) and a driving end and a driven end that are angled with each other. The driving end and the driven end are respectively rollingly connected to the contour surfaces of the two cams, and the driven ends of the two conjugate cam groups (32) are respectively transmission-connected to the cutting upper die (23) and the cutting lower die (24).

3. A cam-driven terminal cutting pin mechanism as claimed in claim 2, characterized in that: The swing rod 1 (33) is provided with roller followers (34) at the side edges of the driving end and the driven end, respectively, and is connected with the contour surfaces of the two groups of cams in abutment with each other.

4. A cam-driven terminal cutting pin mechanism as claimed in claim 3, characterized in that: The cutting seat (21) is provided with a second swing rod (35) at a position close to the cutting upper die (23); the second swing rod (35) is a lever-type structure; the fulcrum of the second swing rod (35) is rotatably connected to the cutting seat (21); the driven end of the second swing rod (35) is connected to the end of the cutting upper die (23); the driving end of the second swing rod (35) and the driven end of the first swing rod (33) corresponding to the cutting upper die (23) are connected via a connecting rod (36).

5. A cam-driven terminal cutting pin mechanism as claimed in claim 3, characterized in that: The cutting seat (21) is provided with a guide block (37) at a position close to the cutting lower die (24); the guide block (37) is slidably arranged in the cutting seat (21) and one end of the guide block (37) is rotatably connected to the driven end of a swing rod (33) corresponding to the cutting lower die (24); A guide bevel groove (38) is arranged on the guide block (37), and a guide roller (39) which moves in coordination with the guide bevel groove (38) is arranged on the cutting lower die (24).

6. A cam-driven terminal cutting pin mechanism as claimed in claim 1, characterized in that: The rotary driving member of the cutting transmission unit (30) is a rotary motor (310) fixedly arranged on the frame (10).

7. A cam-driven terminal cutting pin mechanism as claimed in claim 1, characterized in that: The pin insertion drive unit (50) comprises a transverse drive mechanism for controlling the pin insertion action of the pin insertion unit (40), and a vertical drive mechanism for controlling the vertical movement of the pin insertion unit (40); the transverse drive mechanism is connected to the output end of the vertical drive mechanism, and the pin insertion unit (40) is connected to the output end of the transverse drive mechanism.

8. A cam-driven terminal cutting pin mechanism as claimed in claim 7, characterized in that: The transverse driving mechanism and the vertical driving mechanism are both motor screw structures.

9. A cam-driven terminal cutting pin mechanism as claimed in claim 7, characterized in that: The pin insertion unit (40) comprises a front support (42) and a rear support (43); the front support (42) is provided with an insertion rod (41) along the driving direction of the transverse driving mechanism; the front support (42) and the rear support (43) are elastically connected by a spring (44).

10. A cam-driven terminal cutting pin mechanism as claimed in claim 9, characterized in that: The front support (42) and the rear support (43) are respectively connected to a front detection block (45) and a rear detection block (46); the front detection block (45) is connected to a displacement sensor (47) and extends to the rear side of the rear detection block (46).

Images