Capacitor pin shape bending mechanism

Abstract

The utility model relates to capacitor pin bending technical field, concretely relates to a capacitor pin shape bending mechanism. Including the bottom plate, the upper side wall of bottom plate is equipped with the sliding assembly of slide, the upper side wall fixed mounting of slide has the assembly plate. The utility model discloses, through the positioning groove of clamp block and the cooperative action of the double expansion board of symmetrical setting, realized the synchronous positioning and disposable bending of capacitor double pin, replaced the trouble of artificial bending capacitor double pin one by one, and the automation drive system that it is composed of multiple air cylinders, under the time sequence instruction of control equipment, accurately, continuously, quickly complete the whole set of action of pin positioning, expansion board insertion, prop open bending and reset, this process eliminates the alignment adjustment, force intermittent and individual speed difference in manual operation, when the expansion board moves outward and enters the storage slot, the fulcrum cooperative action that the cutting edge end and the edge of positioning groove form, instantaneous complete pin bending, ensure the consistency of result.

Description

Technical Field

[0001] This utility model relates to the field of capacitor lead bending technology, and more specifically, to a capacitor lead bending mechanism. Background Technology

[0002] Capacitor leads are two metal pins that connect the internal electrodes of the capacitor to the external circuit board. To ensure that the capacitor can be more securely installed in the through holes of the circuit board, the originally straight leads need to be bent into an L-shape during the production process. This prevents the leads from falling off before automatic insertion and subsequent soldering. At the same time, the L-shaped bend can absorb the vibration or thermal expansion and contraction stress on the circuit board, protecting the solder joints from cracking. This shape is also more suitable for automated equipment to quickly and accurately grasp and insert, thereby improving production efficiency and reliability.

[0003] Currently, in many small and medium-sized electronics manufacturing plants or on production lines for specific types of capacitors, this crucial pre-bending process still relies on operators manually using simple tools (such as pliers and manual bending dies). This operating mode presents numerous challenges in modern production, which strives for large-scale, high consistency, and stability: operators must bend the leads one by one, at a speed far slower than automated equipment, making it difficult to match the production pace of high-speed assembly lines and becoming a bottleneck for capacity improvement; simultaneously, manual operation makes it difficult to precisely control the bending angle, position, and force, resulting in significant differences in key parameters such as lead length, bending radius, and coplanarity within and between batches, making it difficult to guarantee product consistency; furthermore, this process is a highly repetitive and delicate operation, and operators are prone to visual and muscle fatigue from prolonged work, directly affecting bending accuracy and yield, especially under production pressure; in addition, bending quality (such as avoiding damage to the lead plating and preventing substrate cracking) highly depends on the operator's skill, feel, and experience, and the lack of consistency in output quality between new and old employees and different shifts increases the difficulty and risk of quality control. Utility Model Content

[0004] The purpose of this invention is to provide a capacitor lead bending mechanism to solve the problems mentioned in the background art.

[0005] The pre-bending process relies on operators to complete it manually using simple tools (such as pliers or manual bending dies). This operating mode presents many challenges in modern production that pursues large scale, high consistency and stability.

[0006] To address the above problems, the present invention aims to provide a capacitor lead bending mechanism, comprising a base plate, a slide table slidably mounted on the upper side wall of the base plate, an assembly plate fixedly mounted on the upper side wall of the slide table, a clamping block provided on one side of the assembly plate, a positioning groove formed on the top of the clamping block near the assembly plate, and receiving grooves formed on the bottom ends of both sides of the positioning groove, a displacement mechanism for driving the clamping block closer to or away from the assembly plate provided on the upper side of the base plate, a feeding mechanism for driving the assembly plate closer to or away from the clamping block provided on the upper side of the base plate, and two moving blocks symmetrically slidably mounted on the upper side wall of the assembly plate, with the two moving blocks having a mutual contact side... An expansion plate is fixedly installed, with one end of the expansion plate near the clamping block extending to the outside of the assembly plate. The assembly plate is equipped with an opening and closing mechanism for driving the two expansion plates to move closer or further apart. When the external conveying mechanism moves the capacitor to the position between the expansion plate and the clamping block, the displacement mechanism drives the clamping block to move towards the assembly plate, so that the two leads of the capacitor enter the positioning groove. Then, the feeding mechanism drives the assembly plate to move towards the clamping block, so that the two expansion plates are inserted between the two leads. Next, the opening and closing mechanism drives the two expansion plates to move away from each other at equal distances, so that the two expansion plates enter the corresponding storage grooves. At this time, the expansion plate, the positioning groove, and the corner of the storage groove work together to bend the leads.

[0007] As a further improvement to this technical solution, the opening and closing mechanism includes a second cylinder fixedly installed in the middle position of the side wall of the assembly plate. A wedge block is fixedly connected to the end of the piston rod of the second cylinder. The wedge block is located on the side of the moving block away from the clamping block, and the end of the wedge block facing the moving block is set as a wedge-shaped tip.

[0008] As a further improvement to this technical solution, a tension spring is fixedly connected between the upper sidewalls of the two moving blocks, and the tension spring pulls the two moving blocks closer to each other.

[0009] As a further improvement to this technical solution, two blocks are fixedly connected to the middle position of the side wall of the assembly plate. The blocks are located between two moving blocks. The side wall of the moving blocks and the corresponding positions of the two blocks are provided with embedded grooves. When the two expansion plates are in contact with each other, the side walls of the two corresponding embedded grooves contact the two sides of the blocks respectively.

[0010] As a further improvement to this technical solution, the displacement mechanism includes a mounting block fixedly installed on the side wall of the base plate. The mounting block has two horizontally arranged movable slots on the side facing the clamping block. A sliding rod is fixedly installed on one side of the clamping block at a position corresponding to the two movable slots. The other end of the sliding rod is slidably disposed inside the corresponding movable slot.

[0011] As a further improvement to this technical solution, a return spring is provided inside the movable groove. The two ends of the return spring are in contact with the inner wall of the movable groove and the end of the slide rod away from the clamping block, respectively. The return spring pushes the clamping block away from the mounting block.

[0012] As a further improvement to this technical solution, a third cylinder is fixedly installed on the upper side wall of the base plate, and a push block is fixedly connected to the end of the piston rod of the third cylinder. The push block contacts the side of the clamping block away from the mounting block.

[0013] As a further improvement to this technical solution, the feeding mechanism includes a first cylinder fixedly installed on the side wall of the base plate, and an end plate is fixedly installed at the end of the piston rod of the first cylinder, with the upper end of the end plate fixedly installed on the lower side wall of the assembly plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This capacitor pin bending mechanism, through the coordinated action of the positioning groove of the clamping block and the symmetrically arranged double expansion plates, achieves synchronous positioning and one-time bending of the capacitor's two pins, replacing the tedious manual bending of each capacitor pin individually. Its automated drive system, composed of multiple cylinders, accurately, continuously, and quickly completes the entire set of actions—pin positioning, expansion plate insertion, bending, and resetting—under the timing commands of the control equipment. This process eliminates the alignment adjustments, force application intervals, and individual speed differences inherent in manual operation. When the expansion plate moves outward into the receiving slot, the fulcrum formed by its blade tip and the edge of the positioning groove works in tandem to instantly complete the pin bending, ensuring consistency of results and increasing the pin bending capacity per unit time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0018] Figure 3 This is one of the partial structural schematic diagrams of this utility model;

[0019] Figure 4 This is the second partial structural schematic diagram of the present utility model;

[0020] Figure 5 This is the third partial structural schematic diagram of this utility model;

[0021] Figure 6 This is the fourth partial structural schematic diagram of the present utility model;

[0022] Figure 7 This is a schematic diagram of the capacitor and its unbent leads according to this utility model.

[0023] Figure 8 This is a schematic diagram of the capacitor and its bent pins according to this utility model.

[0024] The meanings of the labels in the diagram are as follows:

[0025] 1. Base plate;

[0026] 2. Slide table; 21. Assembly plate; 22. Stop block;

[0027] 3. First cylinder; 31. End plate;

[0028] 4. Moving block; 41. Expansion plate; 42. Embedded groove;

[0029] 5. Opening and closing mechanism; 51. Second cylinder; 52. Wedge block; 53. Tension spring;

[0030] 6. Clamping block; 61. Positioning groove; 62. Storage groove;

[0031] 7. Displacement mechanism; 71. Mounting block; 72. Movable groove; 73. Slide rod; 74. Return spring; 76. Third cylinder; 77. Push block;

[0032] 8. Capacitor; 81. Pin. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] Please see Figures 1-8 As shown, the purpose of this embodiment is to provide a capacitor pin bending mechanism, including a base plate 1. A slide table 2 is slidably mounted on the upper side wall of the base plate 1 via a first guide rail. The first guide rail is horizontally fixed on the base plate 1. The slide table 2 slides on the first guide rail. An assembly plate 21 is fixedly mounted on the upper side wall of the slide table 2. A clamping block 6 is provided on one side of the assembly plate 21. A positioning groove 61 is opened on the top of the clamping block 6 near the assembly plate 21. A storage groove 62 is opened on the bottom ends of both sides of the positioning groove 61. A displacement mechanism 7 for driving the clamping block 6 to approach or move away from the assembly plate 21 is provided on the upper side of the base plate 1.

[0036] The structure of displacement mechanism 7 is detailed below, referring to... Figure 2 and Figure 3The displacement mechanism 7 includes a mounting block 71 fixedly installed on the upper side wall of the base plate 1. The mounting block 71 is located between the slide table 2 and the clamping block 6, and is located below the assembly plate 21. The mounting block 71 has two horizontally arranged movable grooves 72 on the side facing the clamping block 6. A slide rod 73 is fixedly installed on one side of the clamping block 6 at the position corresponding to the two movable grooves 72. The other end of the slide rod 73 is slidably disposed inside the corresponding movable groove 72, so that the clamping block 6 can only move horizontally along the axial direction of the movable groove 72.

[0037] To ensure that the clamping block 6 has a reset capability and to prevent it from accidentally dislodging, a reset spring 74 is provided inside the movable groove 72. The two ends of the reset spring 74 are in contact with the inner wall of the movable groove 72 and the end of the slide rod 73 away from the clamping block 6, respectively. The reset spring 74 pushes the clamping block 6 away from the mounting block 71. A third cylinder 76 is fixedly installed on the upper side wall of the base plate 1. A push block 77 is fixedly connected to the end of the piston rod of the third cylinder 76. The push block 77 is in contact with the side of the clamping block 6 away from the mounting block 71. Its initial position prevents the clamping block 6 from moving too far away from the mounting block 71 under the action of the reset spring 74, thereby reliably preventing the slide rod 73 from dislodging from the corresponding movable groove 72.

[0038] When the clamping block 6 needs to approach the mounting plate 21, the piston rod of the third cylinder 76 extends, driving the push block 77 to move toward the mounting block 71. The push block 77 then pushes the clamping block 6 to move synchronously against the elastic force of the return spring 74. During this process, the clamping block 6 drives the slide rod 73 to slide inside the corresponding movable groove 72, so that the return spring 74 is compressed and stores energy.

[0039] When the clamping block 6 needs to be moved away from the mounting plate 21, the piston rod of the third cylinder 76 retracts, driving the push block 77 away from the mounting block 71. At this time, the compressed return spring 74 releases its stored energy and rebounds to push the slide rod 73 and the clamping block 6 fixed thereto to move away from the mounting block 71, thereby realizing the automatic reset of the clamping block 6.

[0040] A feeding mechanism for driving the assembly plate 21 closer to or away from the clamping block 6 is provided on the upper side of the base plate 1. The structure of the feeding mechanism is detailed below. The feeding mechanism includes a first cylinder 3 fixedly installed on the upper side wall of the base plate 1. The first cylinder 3 is located on the side of the slide table 2 away from the clamping block 6 and is located below the assembly plate 21. An end plate 31 is fixedly installed at the end of the piston rod of the first cylinder 3. The upper end of the end plate 31 is fixedly installed on the lower side wall of the assembly plate 21.

[0041] When the piston rod of the first cylinder 3 extends, its drive end plate 31 and assembly plate 21 approach the clamping block 6; when the piston rod of the first cylinder 3 retracts, its drive end plate 31 and assembly plate 21 move away from the clamping block 6.

[0042] Two movable blocks 4 are symmetrically slidably mounted on the upper side wall of the assembly plate 21 via a second guide rail that is fixedly mounted horizontally. An expansion plate 41 is fixedly mounted on the side of the two movable blocks 4 that is close to each other. The end of the expansion plate 41 near the clamping block 6 extends to the outside of the assembly plate 21, and this end is set in a narrow blade shape. An opening and closing mechanism 5 is provided on the assembly plate 21 for driving the two expansion plates 41 to move closer or further apart.

[0043] The structure of the opening and closing mechanism 5 is described in detail below, with reference to... Figures 4-6 The opening and closing mechanism 5 includes a second cylinder 51 fixedly installed in the middle of the upper side wall of the assembly plate 21. A wedge 52 is fixedly connected to the end of the piston rod of the second cylinder 51. The wedge 52 is located on the side of the moving block 4 away from the clamping block 6, and the end of the wedge 52 facing the moving block 4 is set as a wedge-shaped tip. In order to improve the stability of the wedge 52 when it moves, a guide sleeve is slidably sleeved on the wedge 52. The guide sleeve is fixedly installed in the upper side wall of the assembly plate 21.

[0044] A tension spring 53 is fixedly connected between the upper sidewalls of the two movable blocks 4. The tension spring 53 pulls the two movable blocks 4 closer to each other. Two stops 22 are fixedly connected in the middle of the upper sidewall of the assembly plate 21. The stops 22 are located between the two movable blocks 4. An embedded groove 42 is provided in the sidewall of the movable block 4 at the position corresponding to the two stops 22.

[0045] When the two expansion plates 41 are in the initial state, under the pull of the tension spring 53, the two moving blocks 4 move closer to each other, keeping the two expansion plates 41 in contact (i.e., in a closed state). At this time, the side walls of the inner grooves 42 on the two moving blocks 4 are in close contact with the sides of the corresponding stops 22. The cooperation between the inner grooves 42 and the stops 22 effectively prevents the moving blocks 4 and the expansion plates 41 from moving horizontally along the direction of the second guide rail, ensuring the stability of the initial position.

[0046] When the piston rod of the second cylinder 51 extends, driving the wedge 52 to move towards the clamping block 6, the wedge-shaped tip of the wedge 52 inserts into the gap between the ends of the two expansion plates 41 away from the clamping block 6 (for easy insertion, this end of the expansion plate 41 is designed to be rounded). As the wedge 52 continues to advance, the end of the expansion plate 41 slides outward along the inclined surface of the wedge-shaped tip, causing the corresponding moving block 4 to overcome the tension of the tension spring 53 and move horizontally along the direction of the second guide rail, thereby making the two expansion plates 41 equidistant and stable away from each other, switching to the open state. By precisely controlling the movement stroke of the wedge 52, the distance between the two expansion plates 41 can be precisely adjusted.

[0047] When the piston rod of the second cylinder 51 retracts and drives the wedge block 52 away from the clamping block 6, the tension of the tension spring 53 causes the two moving blocks 4 to move closer to each other until the two expansion plates 41 are fully pressed together again, restoring the closed state.

[0048] When the external conveying mechanism (e.g., using a cylinder to clamp the capacitor body 8) will... Figure 7 After the capacitor 8 is moved to the predetermined position between the expansion plate 41 and the clamping block 6 (the pins 81 of the capacitor 8 are in a free state), the displacement mechanism 7 first drives the clamping block 6 to move towards the assembly plate 21, so that the two pins 81 of the capacitor 8 fall accurately into the positioning groove 61 of the clamping block 6. Then the feeding mechanism drives the assembly plate 21 to move towards the clamping block 6, so that the two expansion plates 41 in the closed state are inserted between the two pins 81. Then the opening and closing mechanism 5 is activated, driving the two expansion plates 41 to move away from each other at equal distances. The expansion plates 41 move outward, and their ends finally enter the corresponding storage grooves 62 on the clamping block 6.

[0049] In this state, there is a gap between the upper sidewall of the expansion plate 41 and the top side inside the receiving groove 62. This gap is larger than the diameter of the pin 81. This means that the blade tip of the expansion plate 41 is not restricted in height by the top wall of the receiving groove 62 as it moves horizontally outward and enters the receiving groove 62. At this time, as the blade tip of the expansion plate 41 moves horizontally outward, its upward force (generated by the moving direction and the blade slope) will lift the pin 81 segment located above it. At the same time, the positioning groove 61 near the inner edge of the receiving groove 62 (i.e., the corner edge at the junction of the positioning groove 61 and the receiving groove 62) applies a downward constraint force to the pin 81, thereby forming a fixed fulcrum on the pin 81.

[0050] Therefore, the blade tip of the expansion plate 41 works in conjunction with the corner edges of the positioning groove 61 and the receiving groove 62 to apply a precise bending moment to the pin 81 spanning it: the pin 81 is pushed upward by the blade of the expansion plate 41 (because there is space above), while being pressed downward by the edge of the positioning groove 61 (forming a fulcrum). This combination of upward pushing force and downward pressure formed on both sides of the fulcrum forces the pin 81 to bend at the fulcrum (i.e., at the junction of the positioning groove 61 and the receiving groove 62) into a shape like... Figure 8 The approximate L-shape shown completes the bending of pin 81.

[0051] It should be noted that the first cylinder 3, the second cylinder 51 and the third cylinder 76 are all electrically connected to an external control device. This control device performs precise timing control on the movement of the piston rods of the three cylinders to ensure that the pin 81 can be smoothly bent into the predetermined shape.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A capacitor lead bending mechanism, comprising a base plate (1), characterized in that: A slide table (2) is slidably mounted on the upper side wall of the base plate (1). An assembly plate (21) is fixedly mounted on the upper side wall of the slide table (2). A clamping block (6) is provided on one side of the assembly plate (21). A positioning groove (61) is opened on the top of the clamping block (6) near the assembly plate (21). A storage groove (62) is opened on the bottom end of both sides of the positioning groove (61). A displacement mechanism (7) for driving the clamping block (6) to move closer to or away from the assembly plate (21) is provided on the upper side of the base plate (1). A feeding mechanism for driving the assembly plate (21) to move closer to or away from the clamping block (6) is provided on the upper side of the base plate (1). Two moving blocks (4) are symmetrically slidably mounted on the upper side wall of the assembly plate (21). An expansion plate (41) is fixedly mounted on the side of the two moving blocks (4) that are close to each other. The end of the expansion plate (41) near the clamping block (6) extends to Outside the assembly plate (21), the assembly plate (21) is provided with an opening and closing mechanism (5) for driving the two expansion plates (41) to move closer or further apart. When the external conveying mechanism moves the capacitor (8) to the position between the expansion plate (41) and the clamping block (6), the displacement mechanism (7) drives the clamping block (6) to move towards the assembly plate (21), so that the two pins (81) of the capacitor (8) enter the positioning groove (61). Then the feeding mechanism drives the assembly plate (21) to move towards the clamping block (6), so that the two expansion plates (41) are inserted between the two pins (81). Then the opening and closing mechanism (5) drives the two expansion plates (41) to move away from each other at equal distances, so that the two expansion plates (41) enter the corresponding storage groove (62) respectively. At this time, the expansion plate (41) works together with the corner of the positioning groove (61) and the storage groove (62) to bend the pins (81).

2. The capacitor lead bending mechanism according to claim 1, characterized in that: The opening and closing mechanism (5) includes a second cylinder (51) fixedly installed in the middle of the upper side wall of the assembly plate (21). The piston rod end of the second cylinder (51) is fixedly connected to a wedge (52). The wedge (52) is located on the side of the moving block (4) away from the clamping block (6), and the end of the wedge (52) facing the moving block (4) is set as a wedge-shaped tip.

3. The capacitor lead bending mechanism according to claim 1, characterized in that: A tension spring (53) is fixedly connected between the upper sidewalls of the two movable blocks (4), and the tension spring (53) pulls the two movable blocks (4) closer to each other.

4. The capacitor lead bending mechanism according to claim 1, characterized in that: Two blocks (22) are fixedly connected to the middle position of the upper side wall of the assembly plate (21). The blocks (22) are located between two moving blocks (4). The side wall of the moving block (4) is provided with an embedded groove (42) at the position corresponding to the two blocks (22). When the two expansion plates (41) are in contact with each other, the side walls of the corresponding two embedded grooves (42) are in contact with the two sides of the blocks (22).

5. The capacitor lead bending mechanism according to claim 1, characterized in that: The displacement mechanism (7) includes a mounting block (71) fixedly installed on the upper side wall of the base plate (1). The mounting block (71) has two horizontally arranged movable slots (72) on the side facing the clamping block (6). A slide rod (73) is fixedly installed on one side of the clamping block (6) at the position corresponding to the two movable slots (72). The other end of the slide rod (73) is slidably disposed inside the corresponding movable slot (72).

6. The capacitor lead bending mechanism according to claim 5, characterized in that: The movable groove (72) is provided with a return spring (74). The two ends of the return spring (74) are in contact with the inner wall of the movable groove (72) and the end of the slide rod (73) away from the clamping block (6), respectively. The return spring (74) pushes the clamping block (6) away from the mounting block (71).

7. The capacitor lead bending mechanism according to claim 5, characterized in that: A third cylinder (76) is fixedly installed on the upper side wall of the base plate (1). A push block (77) is fixedly connected to the end of the piston rod of the third cylinder (76). The push block (77) contacts the side of the clamping block (6) away from the mounting block (71).

8. The capacitor lead bending mechanism according to claim 1, characterized in that: The feeding mechanism includes a first cylinder (3) fixedly installed on the upper side wall of the base plate (1), and an end plate (31) is fixedly installed at the end of the piston rod of the first cylinder (3). The upper end of the end plate (31) is fixedly installed on the lower side wall of the assembly plate (21).

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