Cam bending and cutting mechanism

Abstract

The present invention discloses a cam bending and cutting mechanism, comprising: a feeding rod, wherein the feeding rod has a feeding end and a feeding end, and is used to process a material strip, wherein the material strip comprises a plurality of terminals arranged side by side, a fixing seat and a connecting belt respectively connected to the two ends of the plurality of terminals, the fixing seat has a plurality of groups of positioning holes, each of the terminals has a pressing portion, a bending portion arranged on both sides of the pressing portion, and a spring piece arranged on the bending portion, the feeding rod pulls the material strip and moves along the length direction of the material strip, and the present invention can realize high-speed feeding, bending, trimming and cutting of the material strip synchronously, with coherent actions and high speed. At the same time, due to the continuity and efficiency of the production process, the production cycle of the product is greatly shortened, and the circulation frequency and quantity of raw materials and semi-finished products are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of terminal production, in particular to a cam bending and cutting mechanism. Background Art

[0002] However, continuous pin terminal processing often relies on decentralized processing equipment, causing the continuous pin terminals to flow through various processes. The conversion between processes takes a lot of time, making the entire production process discontinuous and limiting the production speed. At the same time, there is a lack of effective integration and coordination between the various processes. Therefore, a cam bending and cutting mechanism is urgently needed to solve this problem. Summary of the Invention

[0003] The present invention aims to solve the problems existing in the prior art and provides the following technical solutions:

[0004] Cam bending and cutting mechanism, including:

[0005] A feeding rod having a feeding end and a discharging end, and used for processing a material strip, wherein the material strip includes a plurality of terminals arranged side by side, a fixing seat and a connecting belt respectively connecting the two ends of the plurality of terminals, the fixing seat having a plurality of groups of positioning holes, each of the terminals having a pressing portion, a bending portion arranged on both sides of the pressing portion, and a spring piece arranged on the bending portion, the feeding rod pulls the material strip and moves along the length direction of the material strip;

[0006] A pressing assembly, comprising an upper pressing piece disposed above the feed rod and a lower pressing piece disposed below the feed rod, wherein the upper pressing piece and the lower pressing piece clamp and fix the pressing portion of the terminal;

[0007] Two sets of bending components are provided, which are respectively arranged on both sides of the lower pressing piece and are used to bend the two sets of bending parts on the terminal;

[0008] A trimming assembly is provided on the side of the pressing assembly close to the feeding end, and is used to trim the height of the spring piece on the terminal;

[0009] A cutting assembly is provided on the side of the pressing assembly close to the blanking end, and is used to cut off the connecting strip at the end of the terminal;

[0010] A transmission assembly is provided with six groups of cams, and the six groups of cams correspond one-to-one to the positions of the upper pressing piece, the lower pressing piece, the trimming assembly, the cutting assembly and the two groups of bending assemblies, respectively, and are used to drive the upper pressing piece, the lower pressing piece, the trimming assembly, the cutting assembly and the two groups of bending assemblies to move.

[0011] As an improvement of the above technical solution, the upper surface of the feeding rod is recessed downward to form at least one sinking position, the width of the sinking position is the same as the width of the fixing seat of the terminal, an installation channel is opened on the sinking position, a limiting member is slidingly arranged in the installation channel, and a spring 1 is installed between the bottom of the installation channel and the limiting member so that the limiting member can move up and down along the installation channel. A spring 2 is provided at the end of the feeding rod, and one group of the cams pushes the feeding rod to move toward the lower material end, and drives the material strip to move through the limiting member.

[0012] As an improvement to the above technical solution, an inclined surface is provided at one end of the top of the limiting member, and the end of the inclined surface is in an arc structure to be inserted into the positioning hole of the terminal.

[0013] As an improvement of the above technical solution, the transmission assembly includes a motor, a driving gear sleeved on the output end of the motor, and multiple groups of transmission gears. Two adjacent groups of transmission gears are meshed with each other, and one group of transmission gears is meshed and connected with the driving gear. The transmission gears are installed on the cam through a rotating shaft.

[0014] As an improvement of the above technical solution, the upper pressing piece includes a vertically arranged upper pressing plate and an upper pressing die arranged at the bottom of the upper pressing plate, and stop walls are arranged on both sides of the upper pressing die. After the bending assembly bends the bending part of the terminal, the bending part abuts against the stop walls. The lower pressing piece includes a lower pressing plate and a lower pressing die arranged at the bottom of the lower pressing plate, and abutment walls are arranged on both sides of the lower pressing die. After the bending assembly bends the bending part of the terminal, the bending assembly abuts against the abutment walls to limit the position. The two groups of cams respectively push the upper pressing plate and the lower pressing plate to move, and control the upper pressing die and the lower pressing die to clamp the pressing part of the terminal.

[0015] As an improvement of the above technical solution, the bending assembly includes an inclined bending plate and a bending block arranged on the top of the bending plate, and the bending block is provided with a pushing wall and a limiting wall adjacent to the pushing wall, wherein a group of the cams push the bending plate to move along its length direction, and control the pushing wall on the bending block to push the bending part of the terminal to rotate with the connection between the bending part and the pressing part as the center line, so that the bending part changes from a horizontal state to a vertical state, and at the same time, the limiting wall abuts against the abutment wall of the lower die.

[0016] As an improvement of the above technical solution, the trimming assembly includes a rotatably connected rotating rod 1, a trimming plate, a trimming mold arranged at the bottom of the trimming plate, and a trimming table arranged directly below the trimming mold. The rotating rod 1 has two groups of connecting arms 1, one group of connecting arms 1 is slidably connected to the cam that pushes the feeding rod, and the other group of connecting arms 1 is slidably connected to the trimming plate. When the cam pushes the adjacent connecting arm 1 upward, the other group of connecting arms 1 will be pressed down by the rotation of the rotating rod, thereby pushing the trimming plate to move downward, and trimming the height of the spring clip of the terminal.

[0017] As an improvement of the above technical solution, the cutting assembly includes a rotatably connected rotating rod 2, a cutting plate, a cutting knife arranged at the bottom of the cutting plate, and a pressing piece arranged at the bottom of the cutting plate and having the same shape as the pressing portion of the terminal, a clamping platform is provided under the terminal and directly below the cutting plate, and a feeding trough is provided on the clamping platform, the rotating rod 2 has two groups of connecting arms 2, one group of connecting arms 2 is slidably connected to one group of cams, and the other group of connecting arms 2 is slidably connected to the cutting plate, when the cam pushes the adjacent connecting arm 2 upward, the other group of connecting arms 2 moves downward under the rotation of the rotating rod 2, thereby pushing the cutting plate to move downward, controlling the pressing piece to clamp the pressing portion of the terminal, and the cutting knife cuts off the terminal end and the connecting strip at the connection between the adjacent terminal, and the cut connecting strip slides out of the feeding trough.

[0018] As an improvement to the above technical solution, it also includes a reset component, which includes three springs arranged on the upper pressure plate, lower pressure plate, bending plate, trimming plate and cutting plate, and a fixed plate fixedly connected to one end of the spring three, the fixed plate having a fixed end and a sliding end, and the sliding end of the fixed plate is slidably connected to the upper pressure plate, lower pressure plate, bending plate, trimming plate and cutting plate.

[0019] Beneficial effects of the present invention:

[0020] It can realize the synchronous operation of high-speed feeding, bending, trimming and cutting of material strips with continuous movements and high speed. At the same time, due to the continuity and efficiency of the production process, it greatly shortens the production cycle of the product and reduces the frequency and quantity of circulation of raw materials and semi-finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic structural diagram of the connection between the trimming assembly and the transmission assembly of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the trimming assembly of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the bending assembly and the pressing assembly of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the upper and lower pressing parts and the bending assembly of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the cutting assembly of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the cutting plate of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the feeding rod of the present invention;

[0029] Figure 9 Schematic diagram of the structure of the limiter of the present invention;

[0030] Figure 10 It is a structural diagram of the connection between the limiter and the terminal of the present invention.

[0031] Reference numerals: 10, motor; 11, transmission gear; 12, cam; 20, upper pressing piece; 21, upper pressing plate; 22, upper pressing die; 30, trimming assembly; 31, trimming plate; 32, rotating rod 1; 33, trimming die; 34, trimming table; 40, bending assembly; 41, bending plate; 42, bending block; 50, lower pressing piece; 51, lower pressing plate; 52, lower pressing die; 60, cutting Components; 61. Cutting plate; 62. Clamping table; 621. Feeding chute; 63. Rotating rod 2; 64. Cutting knife; 65. Pressing piece; 70. Feeding rod; 71. Limiting piece; 711. Inclined surface; 712. Arc structure; 72. Sinking position; 73. Installation channel; 80. Material strip; 81. Pressing part; 82. Bending part; 821. Spring piece; 83. Connecting belt; 84. Fixed seat. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] The cam bending and cutting mechanism includes: a feeding rod 70, a pressing assembly, a bending assembly 40, a trimming assembly 30, a cutting assembly 60 and a transmission assembly.

[0034] In one embodiment, reference Figure 8 、 Figure 9 as well as Figure 10The feeding rod 70 has a feeding end and a discharging end, and is used to process a material strip 80. The material strip 80 includes a plurality of terminals arranged side by side, a fixing seat 84 and a connecting belt 83 respectively connecting the two ends of the plurality of terminals. The fixing seat 84 has a plurality of positioning holes. Each of the terminals has a pressing portion 81, a bending portion 82 arranged on both sides of the pressing portion 81, and a spring 821 arranged on the bending portion 82. The feeding rod 70 pulls the material strip 80 and moves along the length direction of the material strip 80.

[0035] The upper surface of the feeding rod 70 is recessed downward to form at least one sinking position 72. The width of the sinking position 72 is the same as the width of the terminal fixing seat 84. A mounting channel 73 is provided on the sinking position 72. A limiting member 71 is slidably provided in the mounting channel 73. A spring 1 is installed between the bottom of the mounting channel 73 and the limiting member 71 to allow the limiting member 71 to move up and down along the mounting channel 73. A spring 2 is provided at the end of the feeding rod 70. One group of the cams 12 pushes the feeding rod 70 to move in the direction of the lower material end, and drives the material strip 80 to move through the limiting member 71.

[0036] An inclined surface 712 is provided at one end of the top of the limiting member 71 , and an end of the inclined surface 712 is in an arc structure 711 for inserting into the positioning hole of the terminal.

[0037] Specifically, when the feeding rod 70 is in the initial position, spring 2 and spring 1 are both in a naturally extended state. At this time, under the action of spring 1, the arc structure 711 of the limiting member 71 partially extends out of the mounting channel 73 and is inserted into the positioning hole on the terminal fixing seat 84 on the material strip 80. When one of the sets of cams 12 starts to rotate and pushes the feeding rod 70 to move toward the lower material end, since the arc structure 711 of the limiting member 71 is inserted into the positioning hole of the terminal, the movement of the feeding rod 70 will drive the material strip 80 to move together through the limiting member 71. At this time, spring 2 is further compressed, storing elastic potential energy. In this process, the material strip 80 is pulled along the length direction of the material strip 80. As the feeding rod 70 continues to move, the material strip 80 is continuously fed. Since the width of the sinking position 72 is the same as the width of the terminal fixing seat 84, the sinking position 72 can play a certain limiting and guiding role on the material strip 80, ensuring that the material strip 80 will not deviate during the feeding process. When the thrust of the cam 12 on the feeding rod 70 disappears, the spring 2 releases the stored elastic potential energy, pushing the feeding rod 70 to move in the opposite direction, that is, the feeding end direction, to reset. During the reset process of the feeding rod 70, Due to the design of the inclined surface 712 of the limit member 71, when the feeding rod 70 moves in the reverse direction, due to the existence of the inclined surface 712, the limit member 71 will move downward along the installation channel 73 under the pressure of the fixed seat to squeeze the spring 1, and the arc structure 711 on the top of the limit member 71 will gradually disengage from the positioning hole of the terminal. When the feeding rod 70 is in the resetting process, the pressing assembly, bending assembly 40, trimming assembly 30 and cutting assembly 60 act on the terminal, so that the material strip is in a fixed limiting state, preventing the material strip from moving in the reverse direction with the feeding rod 70, waiting for the next push of the cam 12 to start a new round of feeding operation.

[0038] In one embodiment, reference Figure 4 as well as Figure 5 The pressing assembly includes an upper pressing piece 20 disposed above the feeding rod 70 and a lower pressing piece 50 disposed below the feeding rod 70, and the upper pressing piece 20 and the lower pressing piece 50 clamp and fix the pressing portion 81 of the terminal;

[0039] The upper pressing piece 20 includes a vertically arranged upper pressing plate 21 and an upper pressing die 22 arranged at the bottom of the upper pressing plate 21, and stop walls are arranged on both sides of the upper pressing die 22. After the bending component 40 bends the bending portion 82 of the terminal, the bending portion 82 abuts against the stop walls. The lower pressing piece 50 includes a lower pressing plate 51 and a lower pressing die 52 arranged at the bottom of the lower pressing plate 51, and abutting walls are arranged on both sides of the lower pressing die 52. After the bending component 40 bends the bending portion 82 of the terminal, the bending component 40 abuts against the abutting walls to limit the position. The two groups of cams 12 respectively push the upper pressing plate 21 and the lower pressing plate 51 to move, and control the upper pressing die 22 and the lower pressing die 52 to clamp the pressing portion 81 of the terminal.

[0040] Specifically, when the feeding rod 70 is moving, the upper pressing piece 20 and the lower pressing piece 50 are in a separated state, and a certain distance is maintained between the upper pressing plate 21 and the lower pressing plate 51. The upper pressing die 22 and the lower pressing die 52 do not apply a clamping force to the pressing portion 81 of the terminal. At this time, the material strip 80 can move with the movement of the feeding rod 70. When the feeding rod 70 completes a feeding stroke and starts to reset, two of the six groups of cams 12 start to move. One of the two groups of cams 12 pushes the upper pressing plate 21 to move downward, and the other group of cams 12 pushes the lower pressing plate 51 to move upward. The upper and lower pressing plates 21 and 51 gradually approach each other. As the upper and lower pressing plates 21 and 51 approach each other, the upper die 22 and the lower die 52 contact the pressing portion 81 of the terminal and gradually apply a clamping force until the pressing portion 81 is firmly clamped. At this time, the material strip 80 is restricted in the vertical direction by the upper and lower pressing plates 20 and 50, and cannot produce displacement in the up, down, left, and right directions. While being clamped and fixed, the bending assembly 40 bends the bending portion 82 of the terminal. After the bending portion 82 is bent, the bending assembly 40 abuts against the stop walls on both sides of the upper die 22 and the abutment walls on both sides of the lower die 52. The existence of the stop walls and the abutment walls limits the excessive deformation and displacement of the bending portion 82 in the horizontal direction, further ensuring the shape accuracy and position stability of the terminal during the bending process. The upper and lower pressing plates 20 and 50 release the clamping according to the movement state of the cam 12 and return to the initial separation state so that the material strip 80 can be fed again.

[0041] In one embodiment, reference Figure 4 as well as Figure 5 , the bending assembly 40 is provided with two groups, which are respectively provided on both sides of the lower pressing piece 50, for bending the two groups of bending portions 82 on the terminal;

[0042] The bending assembly 40 includes an inclined bending plate 41 and a bending block 42 provided on the top of the bending plate 41. The bending block 42 is provided with a pushing wall and a limiting wall adjacent to the pushing wall. A group of the cams 12 pushes the bending plate 41 to move along its length direction, and controls the pushing wall on the bending block 42 to push the bending portion 82 of the terminal to rotate about the connection between the bending portion 82 and the pressing portion 81, so that the bending portion 82 changes from a horizontal state to a vertical state. At the same time, the limiting wall abuts against the abutment wall of the lower pressing die 52.

[0043] Specifically, when the bending operation is not performed, the bending assembly 40 is in a standby position, and the bending plate 41 and the bending block 42 maintain a certain distance from the bending portion 82 of the terminal, without contact or interaction. At this time, the bending portion 82 of the terminal is in a horizontal state. When one set of cams 12 starts to drive the bending plate 41 to move along its length direction, since the bending plate 41 is inclined, it drives the bending block 42 to move accordingly and gradually approach the bending portion 82 of the terminal. As the bending block 42 approaches, The pushing wall first contacts the bending portion 82 of the terminal. Due to the pushing action of the pushing wall, the bending portion 82 begins to rotate around the center line with the connection between the bending portion 82 and the pressing portion 81 as the center line. In this process, the bending portion 82 gradually changes from a horizontal state to a vertical state. At the same time, as the bending plate 41 continues to move, the limiting wall on the bending block 42 also gradually approaches the abutment wall of the lower die 52. When the bending portion 82 rotates to a state close to the vertical state, the limiting wall abuts against the abutment wall of the lower die 52. At this time, on the one hand, the abutment wall limits the further movement of the limit wall, thereby indirectly limiting the excessive pushing of the bending block 42 on the bending portion 82, ensuring that the bending portion 82 can accurately reach a vertical state and remain stable; on the other hand, this abutment also makes the entire bending assembly 40 in a stable position after completing the bending action, preventing it from being displaced or shaken due to external forces and other factors, thereby ensuring the consistency of bending accuracy and product quality. After the bending operation is completed, the bending assembly 40 releases the bending action according to the movement state of the cam 12 and returns to its initial state so that the material belt 80 can be fed again.

[0044] In one embodiment, reference Figure 2 as well as Figure 3 The trimming component 30 is provided on the side of the pressing component close to the feeding end, and is used to trim the height of the spring piece 821 on the terminal;

[0045] The trimming assembly 30 includes a rotatably connected rotating rod 32, a trimming plate 31, a trimming mold 33 arranged at the bottom of the trimming plate 31, and a trimming platform 34 arranged directly below the trimming mold 33. The rotating rod 32 has two groups of connecting arms, one of which is slidably connected to the cam 12 that pushes the feeding rod 70, and the other group of connecting arms is slidably connected to the trimming plate 31. When the cam 12 pushes the adjacent connecting arm 1 upward, the other group of connecting arms will be pressed down by the rotation of the rotating rod 32, thereby pushing the trimming plate 31 to move downward, and trimming the height of the spring piece 821 of the terminal.

[0046] Specifically, when the trimming operation is not performed, the connecting arm 1 close to the rotating rod 32 and the cam 12 is in a downward pressure state, and there is a certain gap between the trimming die 33 and the spring piece 821 of the terminal, which will not act on the spring piece 821. When the feeding rod 70 performs the corresponding reset action, the cam 12 associated with it slides in contact with a group of connecting arms 1 of the rotating rod 32 and gradually pushes the connecting arm 1 upward. Due to the structure of the rotating rod 32, when one group of connecting arms 1 is tilted upward, the other group of connecting arms 1 is in the rotating rod 3 2 begins to press down, and this pressing action is transmitted to the trimming plate 31, causing the trimming plate 31 to move downward, and the trimming die 33 gradually approaches and contacts the spring piece 821 of the terminal. Since the trimming die will apply a certain pressure to the spring piece 821 and trim the height of the spring piece 821 according to the design requirements, when the cam 12 continues to rotate, its thrust on the connecting arm 1 gradually decreases until it disappears. At this time, the rotating rod 1 32 returns to its original state under the action of the torsion spring, wherein a torsion spring is installed at the rotating position of the rotating rod 1 32.

[0047] In one embodiment, reference Figure 6 as well as Figure 7 The cutting assembly 60 is provided on the side of the pressing assembly close to the blanking end, and is used to cut off the connecting strip 83 at the end of the terminal;

[0048] The cutting assembly 60 includes a rotating rod 2 63 connected in a rotational manner, a cutting plate 61, a cutting knife 64 arranged at the bottom of the cutting plate 61, and a pressing piece 65 arranged at the bottom of the cutting plate 61 and having the same shape as the pressing portion 81 of the terminal. A clamping platform 62 is provided below the terminal and directly below the cutting plate 61, and a material discharge chute 621 is provided on the clamping platform 62. The rotating rod 2 63 has two groups of connecting arms 2, one of which is slidably connected to one of the groups of cams 12, and the other group of connecting arms 2 is slidably connected to the cutting plate 61. When the cam 12 pushes the adjacent connecting arm 2 upward, the other group of connecting arms 2 moves downward under the rotation of the rotating rod 2 63, thereby pushing the cutting plate 61 to move downward, controlling the pressing piece 65 to clamp the pressing portion of the terminal, and the cutting knife 64 cuts off the connecting strip 83 at the end of the terminal and the connection between the adjacent terminals, and the cut connecting strip 83 slides out of the discharge chute.

[0049] Specifically, the cutting assembly 60 is in the initial position, a group of connecting arms 2 in the rotating rod 2 63 that are close to the cam 12 are in a downward pressure state, and the other group of connecting arms 2 are in an upward tilt state. The cutting knife 64 and the connecting belt 83, as well as the pressing piece 65 and the pressing portion 81 of the terminal are all kept in a separated state, and the clamping table 62 stably supports the material strip 80. At this time, the material strip 80 can be fed normally in cooperation with the feeding rod 70 and other components. When the feeding rod 70 completes the corresponding feeding action and the material strip 80 moves to the predetermined cutting position, a group of cams 12 associated with the cutting assembly 60 slides in contact with a group of connecting arms 2 of the rotating rod 2 63 and gradually pushes the connecting arms 2 upward. When one group of connecting arms 2 is tilted upward, the other group of connecting arms 2 begins to move downward under the lever action of the rotating rod 2 63. This downward movement force pushes the cutting plate 61 to move. During the downward movement of the cutting plate 61, the pressing piece 65 contacts and gradually The pressing portion 81 of the clamping terminal gradually cooperates with the clamping platform 62 to clamp the terminal, firmly fixing the terminal on the clamping platform 62 to prevent the terminal from being displaced during the cutting process and affecting the cutting accuracy. At the same time, the cutting knife 64 contacts the connecting strip 83. Due to the sharp edge of the cutting knife 64 and sufficient downward pressure, the connecting strip 83 is cut at the end of the terminal and the connection between the adjacent terminals. The cut connecting strip 83 slides out of the unloading trough 621 opened on the clamping platform 62 under the push of its own gravity and the cutting action of the cutting knife 64, and enters the waste collection or subsequent processing area. The thrust of the cam 12 on the connecting arm 2 gradually weakens until it disappears. At this time, the rotating rod 2 63 is restored to its initial position under the action of the torsion spring, driving the cutting plate 61 to move upward and reset, preparing for the next cutting operation cycle to handle the cutting task of the connecting strip 83 on the subsequent material strip 80. A torsion spring is installed at the rotating position of the rotating rod 2 363.

[0050] In one embodiment, reference Figure 1, a transmission assembly, wherein six groups of cams 12 are provided on the transmission assembly, and the six groups of cams 12 correspond to the positions of the upper pressing piece 20, the lower pressing piece 50, the trimming assembly 30, the cutting assembly 60 and the two groups of bending assemblies 40 respectively, and are used to drive the upper pressing piece 20, the lower pressing piece 50, the trimming assembly 30, the cutting assembly 60 and the two groups of bending assemblies 40 to move;

[0051] The transmission assembly includes a motor 10, a driving gear sleeved on the output end of the motor 10, and multiple groups of transmission gears 11. Two adjacent groups of transmission gears 11 are meshed with each other, and one group of transmission gears 11 is meshed and connected with the driving gear. The transmission gears 11 are installed on the cam 12 through a rotating shaft.

[0052] Specifically, the motor 10 serves as the power source of the entire transmission assembly. When the motor 10 is started, its output end begins to rotate. Since the driving gear is sleeved on the output end of the motor 10, the driving gear will rotate synchronously with the output shaft of the motor 10. The driving gear is meshed with one set of transmission gears 11. According to the gear transmission principle, when the driving gear rotates, the transmission gear 11 meshed with it will be driven to rotate. The two adjacent sets of transmission gears 11 are meshed with each other, so when the first set of transmission gears 11 rotates, it will drive the other transmission gears 11 meshed with it to rotate in turn, thus The power of the motor 10 is transmitted through a series of meshing transmission gears 11. Each transmission gear 11 is installed with a cam 12 through a rotating shaft. When the transmission gear 11 rotates, it will drive the cam 12 connected to it to rotate around the rotating shaft. During the rotation process, these cams 12 convert the rotational motion into corresponding linear motion through their contour shape. For example, the cam 12 can push the feeding rod 70 to move, drive the upper pressure plate 21 and the lower pressure plate 51 to approach each other, and prompt the bending plate 41 to move along the length direction, etc., thereby realizing a series of operations such as feeding the material strip 80 and processing the terminals.

[0053] In one embodiment, a reset assembly is further included, which includes a spring three arranged on the upper pressure plate 21, the lower pressure plate 51, the bending plate 41, the trimming plate 31 and the cutting plate 61, and a fixed plate fixedly connected to one end of the spring three, the fixed plate having a fixed end and a sliding end, and the sliding end of the fixed plate is slidably connected to the upper pressure plate 21, the lower pressure plate 51, the bending plate 41, the trimming plate 31 and the cutting plate 61.

[0054] Specifically, in the initial state, the spring three is in a natural length state. At this time, the upper pressure plate 21, the lower pressure plate 51, the bending plate 41, the trimming plate 31 and the cutting plate 61 are respectively maintained in the initial positions. When the motor 10 drives the cam 12 to rotate through the transmission assembly, the upper pressure plate 21, the lower pressure plate 51, the bending plate 41, the trimming plate 31 and the cutting plate 61 produce corresponding actions. These components will overcome the elastic force of the spring three and move. For example, the cam 12 pushes the upper pressure plate 21 to move downward to perform a material pressing action. At this time, the spring three is compressed and stores elastic potential energy. Similarly, during the bending, trimming and cutting actions, the corresponding movements of the bending plate 41, the trimming plate 31 and the cutting plate 61 will also compress the corresponding spring three. When the driving force of the cam 12 After the action is completed, that is, after the operations of pressing, bending, trimming or cutting are completed, the compressed spring three begins to release its elastic potential energy, and the elastic force of the spring three will push the upper pressure plate 21, the lower pressure plate 51, the bending plate 41, the trimming plate 31 and the cutting plate 61 back to their initial positions. Taking the upper pressure plate 21 as an example, the elastic force of the spring three acts on the fixed plate. Since the fixed end of the fixed plate is fixed and the sliding end is slidably connected to the upper pressure plate 21, the elastic force of the spring three will push the upper pressure plate 21 to move upward and restore it to its initial position. The reset process of other components (lower pressure plate 51, bending plate 41, trimming plate 31 and cutting plate 61) is also similar. Through the elastic force of the spring three, the entire mechanism can be ready for the next processing operation cycle.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. Cam bending and cutting mechanism, characterized in that: include: A feeding rod (70), the feeding rod (70) having a feeding end and a feeding end, and being used for processing a material strip (80), the material strip (80) comprising a plurality of terminals arranged side by side, a fixing seat (84) and a connecting belt (83) respectively connecting the two ends of the plurality of terminals, the fixing seat (84) having a plurality of positioning holes, each of the terminals having a pressing portion (81), a bending portion (82) arranged on both sides of the pressing portion (81), and a spring (821) arranged on the bending portion (82), the feeding rod (70) pulling the material strip (80) and moving along the length direction of the material strip (80); A pressing assembly comprising an upper pressing piece (20) disposed above the feeding rod (70) and a lower pressing piece (50) disposed below the feeding rod (70), wherein the upper pressing piece (20) and the lower pressing piece (50) clamp and fix the pressing portion (81) of the terminal; Two groups of bending components (40) are provided, respectively disposed on both sides of the lower pressing member (50), and are used to bend the two groups of bending portions (82) on the terminal; A trimming assembly (30) is provided on the side of the pressing assembly close to the feeding end and is used to trim the height of the spring (821) on the terminal; A cutting assembly (60) is provided on the side of the pressing assembly close to the blanking end and is used to cut off the connecting strip (83) at the end of the terminal; A transmission assembly, wherein six groups of cams (12) are provided on the transmission assembly, and the six groups of cams (12) correspond to the positions of the upper pressing piece (20), the lower pressing piece (50), the trimming assembly (30), the cutting assembly (60) and the two groups of bending assemblies (40) respectively, and are used to drive the upper pressing piece (20), the lower pressing piece (50), the trimming assembly (30), the cutting assembly (60) and the two groups of bending assemblies (40) to move; The upper pressing piece (20) includes a vertically arranged upper pressing plate (21) and an upper pressing die (22) arranged at the bottom of the upper pressing plate (21). Stop walls are arranged on both sides of the upper pressing die (22). After the bending assembly (40) bends the bending portion (82) of the terminal, the bending portion (82) abuts against the stop wall. The lower pressing piece (50) includes a lower pressing plate (51) and an upper pressing die (22) arranged at the bottom of the upper pressing plate (51). A lower pressing die (52) at the bottom, with abutment walls provided on both sides of the lower pressing die (52), after the bending assembly (40) bends the bending portion (82) of the terminal, the bending assembly (40) abuts against the abutment walls to limit the position, wherein the two groups of cams (12) respectively push the upper pressing plate (21) and the lower pressing plate (51) to move, and control the upper pressing die (22) and the lower pressing die (52) to clamp the pressing portion (81) of the terminal; The bending assembly (40) includes a bending plate (41) arranged at an angle and a bending block (42) arranged on the top of the bending plate (41), and the bending block (42) is provided with a pushing wall and a limiting wall adjacent to the pushing wall, wherein a group of the cams (12) pushes the bending plate (41) to move along its length direction, and controls the pushing wall on the bending block (42) to push the bending portion (82) of the terminal to rotate with the connection between the bending portion (82) and the pressing portion (81) as the center line, so that the bending portion (82) changes from a horizontal state to a vertical state, and at the same time, the limiting wall abuts against the abutting wall of the lower pressing die (52).

2. The cam bending and cutting mechanism according to claim 1, characterized in that: The upper surface of the feeding rod (70) is recessed downward to form at least one sinking position (72), the width of the sinking position (72) is the same as the width of the terminal fixing seat (84), and a mounting channel (73) is provided on the sinking position (72), a limiting member (71) is slidingly provided in the mounting channel (73), and a spring 1 is installed between the bottom of the mounting channel (73) and the limiting member (71) so that the limiting member (71) can move up and down along the mounting channel (73), and a spring 2 is provided at the end of the feeding rod (70), wherein a group of the cams (12) pushes the feeding rod (70) to move in the direction of the lower material end, and drives the material strip (80) to move through the limiting member (71).

3. The cam bending and cutting mechanism according to claim 2, characterized in that: An inclined surface (712) is provided at one end of the top of the limiting member (71), and the end of the inclined surface (712) is in an arc structure (711) for inserting into the positioning hole of the terminal.

4. The cam bending and cutting mechanism according to claim 1, characterized in that: The transmission assembly comprises a motor (10), a driving gear sleeved on the output end of the motor (10), and a plurality of transmission gears (11), wherein two adjacent transmission gears (11) are meshed with each other, wherein one transmission gear (11) is meshed with the driving gear, and the transmission gear (11) is mounted on the cam (12) via a rotating shaft.

5. The cam bending and cutting mechanism according to claim 1, characterized in that: The trimming assembly (30) includes a rotating rod (32) that is rotatably connected, a trimming plate (31), a trimming die (33) arranged at the bottom of the trimming plate (31), and a trimming table (34) arranged directly below the trimming die (33). The rotating rod (32) has two groups of connecting arms, one of which is slidably connected to the cam (12) that pushes the feeding rod (70), and the other group of connecting arms is slidably connected to the trimming plate (31). When the cam (12) pushes the adjacent connecting arm upward, the other group of connecting arms is pressed downward by the rotation of the rotating rod (32), thereby pushing the trimming plate (31) downward to trim the height of the spring piece (821) of the terminal.

6. The cam bending and cutting mechanism according to claim 5, characterized in that: The cutting assembly (60) includes a rotating rod (63) that is rotatably connected, a cutting plate (61), a cutting knife (64) arranged at the bottom of the cutting plate (61), and a pressing member (65) arranged at the bottom of the cutting plate (61) and having the same shape as the pressing portion (81) of the terminal. A clamping platform (62) is provided below the terminal and directly below the cutting plate (61). A material discharge trough (621) is provided on the clamping platform (62). The rotating rod (63) has two groups of connecting arms (2), one of which is connected to the other. The cam (12) is slidably connected, and another set of connecting arms 2 is slidably connected to the cutting plate (61). When the cam (12) pushes the adjacent connecting arm 2 upward, the other set of connecting arms 2 moves downward under the rotation of the rotating rod 2 (63), thereby pushing the cutting plate (61) downward, controlling the pressing member (65) to clamp the pressing portion of the terminal, and the cutting knife (64) cuts off the connecting belt (83) at the terminal end and the connection portion of the adjacent terminal, and the cut connecting belt (83) slides out of the discharge chute.

7. The cam bending and cutting mechanism according to claim 6, characterized in that: The invention also includes a reset assembly, which includes a spring three provided on the upper pressing plate (21), the lower pressing plate (51), the bending plate (41), the trimming plate (31) and the cutting plate (61), and a fixed plate fixedly connected to one end of the spring three, wherein the fixed plate has a fixed end and a sliding end, and the sliding end of the fixed plate is slidably connected to the upper pressing plate (21), the lower pressing plate (51), the bending plate (41), the trimming plate (31) and the cutting plate (61).

Images