A flexible straight capacitor lead welding system

Abstract

The application discloses a kind of soft straight capacitor lead welding systems, belong to capacitor lead welding technical field, system includes: material pushing arm is horizontally arranged, and the front end along opening has clamping slot, material pushing arm is moved and arranged along front-back direction;Material pipe is vertically arranged below material pushing arm;Pressing plate is vertically arranged at the front end of material pushing arm, and is moved and arranged along length direction, and pressing plate is located outside material pipe along the orientation of the front end of material pushing arm;Wire cutter is equipped with two, respectively arranged at the both sides of material pushing arm moving track;Welding torch is equipped with two, respectively arranged at the both sides of material pushing arm moving track, and located between material pipe and same side wire cutter, two welding torches are moved and arranged along connecting line direction, and the both sides of welding torch operating part are equipped with wire hole, for the lead of capacitor is arranged;The operating part of wire cutter and welding torch and the midpoint of clamping slot height direction are in the same horizontal range.This scheme has higher production efficiency, and can adjust lead remaining length, and accurately control the orientation of capacitor two ends lead and welding point position.

Description

Technical Field

[0001] This invention belongs to the field of capacitor lead welding technology, and particularly relates to a flexible straight capacitor lead welding system. Background Technology

[0002] Flexible DC capacitors are typically cylindrical in shape and require leads to be soldered to both ends before assembly. Current soldering processes primarily rely on manual labor. Operators first cut the leads to the required length, then use a soldering iron or soldering gun to solder the leads to both ends of the capacitor. This method not only requires cutting the leads but also manually flipping the capacitor to complete the soldering, resulting in low efficiency. Furthermore, manual soldering leads often result in inconsistent solder joint positions, leading to varying lead orientations and impacting product quality. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a flexible straight capacitor lead welding system that can automatically feed, weld, cut, and unload materials, adjust the lead length, and control the orientation of the leads at both ends of the capacitor and the position of the solder joints.

[0004] In order to achieve the objective of this invention, the following solution is proposed:

[0005] A flexible direct capacitor lead bonding system, comprising:

[0006] The pusher arm is horizontally positioned, with a slot vertically opened at its front end along the horizontal direction. The pusher arm is horizontally movable along the front-back direction.

[0007] The feed tube is vertically positioned below the pusher arm and is used to provide a horizontal capacitor to the slot.

[0008] The pressure plate is vertically disposed at the front end of the pusher arm and is movable along the length of the pusher arm. The pressure plate is located on the outside of the material tube along the front end of the pusher arm.

[0009] Two wire cutters are provided, one on each side of the pusher arm's movement path, and the other on the same side of the material tube as the pressure plate.

[0010] Two welding guns are provided, one on each side of the pusher arm's moving trajectory and the other between the feed tube and the wire cutter on the same side. The two welding guns are moved along the connecting line. Both sides of the working part of the welding gun are provided with wire-binding holes for threading capacitor leads. The working parts of the wire cutter and welding gun are at the same horizontal level as the midpoint of the slot height direction.

[0011] The beneficial effects of this invention are as follows: This solution not only realizes the automatic feeding, welding, lead wire cutting and unloading of capacitors, resulting in high production efficiency; but also automatically conveys the leads, and determines the length of the leads retained on the capacitor by controlling the moving distance of the pusher arm after welding. This not only reduces the need for personnel specifically for cutting leads, but also makes the lead lengths at both ends of the capacitor more consistent after welding, and ensures that the solder joints and lead wire orientations are consistent, which helps to improve the quality and consistency of lead wire welding. Attached Figure Description

[0012] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of the invention.

[0013] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of this application is shown.

[0014] Figure 2 It shows Figure 1 A magnified view of a portion of point A in the middle.

[0015] Figure 3 This application shows a cross-sectional view of the capacitor being ejected upwards from the feed tube.

[0016] Figure 4 A cross-sectional view of this application is shown during the material handling process.

[0017] Figure 5 A cross-sectional view of this application is shown when the pressure plate clamps the capacitor with the slot.

[0018] Figure 6 It shows Figure 5 A magnified view of a section at point B in the middle.

[0019] Figure 7 A state view of the preferred embodiment of this application is shown when the pressure plate pushes the control lever downward.

[0020] Figure 8 A partial cross-sectional view of the preferred embodiment of this application is shown when the pressure plate pushes the control lever downward.

[0021] Figure 9 A cross-sectional view of the preferred embodiment of this application is shown when the pressure plate is in contact with the front inclined surface.

[0022] Figure 10 A state view of the preferred embodiment of this application is shown when the capacitor is unloaded.

[0023] Figure 11 A partial cross-sectional view of the preferred embodiment of this application is shown when the capacitor is unloaded.

[0024] Figure 12 A partial cross-sectional view of the preferred embodiment of this application is shown after the capacitor has been unloaded.

[0025] The markings in the diagram are: Pusher arm-1, Slot-101, Guide rail-11, Base-12, Gear-13, Motor-14, Mounting plate-15, Material tube-2, Limiting groove-201, Feed groove-21, Lifting plate-22, Lifting cylinder-23, Spring plate-24, Pressure plate-3, Pull rod-31, Front rod-311, Rear rod-312, Stop block-32, Reset spring-33, Protrusion-34, Wire cutter-4, Welding gun-5, Wire bundle hole-51, Control rod-6, Rear inclined surface-601, Front inclined surface-602, Support spring-61, Sliding block-62, Discharge groove-63, Lead wire-91. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the implementation methods of the present invention will be described in detail below with reference to the accompanying drawings. However, the embodiments described in this invention are only some embodiments of the present invention, and not all embodiments.

[0027] like Figures 1 to 3 As shown, a flexible straight capacitor lead welding system includes: a pusher arm 1, a feed tube 2, a pressure plate 3, a wire cutter 4, and a welding gun 5.

[0028] Specifically, such as Figure 1 As shown, the pusher arm 1 is horizontally positioned, and its front end is vertically provided with a slot 101 with a V-shaped or U-shaped cross section along the horizontal direction. The vertical direction means that the extension direction of the slot 101 is perpendicular to the line connecting the front and rear ends of the pusher arm 1. The pusher arm 1 is horizontally positioned along the front-back direction.

[0029] Specifically, such as Figure 1 , Figure 3 As shown, the feed tube 2 is vertically positioned below the pusher arm 1 to provide a horizontal capacitor to the slot 101.

[0030] Specifically, such as Figure 1 As shown, the pressure plate 3 is vertically disposed at the front end of the pusher arm 1 and is movable along the length direction of the pusher arm 1. Specifically, a telescopic cylinder or hydraulic cylinder can be disposed on the top surface of the pusher arm 1 to control the movement of the pressure plate 3. The pressure plate 3 is located on the outside of the material tube 2 along the front end of the pusher arm 1.

[0031] Specifically, in combination Figure 1 , Figure 2 As shown, the wire cutter 4 has two blades, which are respectively located on both sides of the moving trajectory of the pusher arm 1 and on the same side of the material tube 2 as the pressure plate 3. The wire cutter 4 adopts a conventional double-blade scissor structure and uses a telescopic cylinder or telescopic motor to control the opening and closing of the two blades to achieve the purpose of cutting.

[0032] Specifically, in combination Figure 1 , Figure 2 As shown, there are two welding guns 5, which are respectively located on both sides of the moving trajectory of the pusher arm 1 and between the material tube 2 and the wire cutter 4 on the same side. The two welding guns 5 are moved along the connecting line direction. Both sides of the working part of the welding gun 5 are provided with wire-binding holes 51 for threading the capacitor leads 91. The working parts of the wire cutter 4 and the welding gun 5 are at the same horizontal level as the midpoint of the height direction of the slot 101. In specific implementation, different types of welding guns 5 can be selected according to the welding requirements. The conventional welding of capacitors is tin soldering, so the welding gun 5 can be a tin soldering gun, and it is a tin soldering gun with automatic wire feeding. Its structure can refer to the soldering gun disclosed in patent application number CN201910152837.0.

[0033] The welding principle is as follows:

[0034] like Figure 2 As shown, before the capacitor welding operation, the front end of the lead wire 91 is first passed through the two wire bundle holes 51. At this time, the working part of the welding gun 5 is exactly between the two wire bundle holes 51.

[0035] Step 1: Material selection, such as... Figure 3 As shown, the pusher arm 1 is moved to the rear end, and the pressure plate 3 and the slot 101 are respectively positioned on both sides above the material tube 2. A horizontal capacitor is conveyed upward through the material tube 2, so that the capacitor is positioned between the slot 101 and the pressure plate 3; Figure 4 , Figure 5 As shown, the pusher arm 1 is moved to the front end, and the capacitor is pushed towards the pressure plate 3 by the slot 101, or the pressure plate 3 is moved towards the pusher arm 1 at the same time, so that the capacitor is clamped and fixed by the pressure plate 3 and the slot 101.

[0036] Step 2: Welding. Continue to move the pusher arm 1 forward to move the capacitor between the two welding guns 5 and stop. Move the two welding guns 5 simultaneously to both ends of the capacitor. Then weld and fix the front end of the lead wire 91 to the end of the capacitor. After welding, move the welding guns 5 outward.

[0037] Step 3: Cutting. Continue to move the pusher arm 1 forward, using the capacitor to drive the two leads 91 forward a predetermined distance to determine the reserved length of the leads 91 on the capacitor. Then, use two wire cutters 4 to cut the corresponding leads 91. After the leads 91 are cut, the front end of the remaining leads 91 is still inserted in the two wire bundle holes 51 for the next welding.

[0038] Step 4: Unloading. Move the pressure plate 3 forward towards the pusher arm 1 to release the welded capacitor. The capacitor will fall automatically under gravity to achieve automatic material discharge. After unloading, move the pusher arm 1 backward again so that the pusher arm 1 and the pressure plate 3 are in the material-receiving state. Then the next welding cycle can be carried out.

[0039] The above solution not only realizes automatic loading and unloading of capacitors, but also automatically conveys the leads 91. By controlling the moving distance of the pusher arm 1 after welding, the length of the leads 91 retained on the capacitor can be determined. This not only reduces the number of personnel required to cut the leads 91, but also makes the length of the leads 91 at both ends of the capacitor more consistent after welding, and ensures that the solder joints and the orientation of the leads 91 are consistent, which helps to improve the welding quality and consistency of the leads 91.

[0040] Preferred, such as Figure 1 As shown, each side of the pusher arm 1 is provided with a guide rail 11 parallel to its length direction. The guide rail 11 slides through a base 12. A rack is embedded in the middle section of the outer side of one of the guide rails 11 in the height direction. The rack can also be directly formed by machining the guide rail 11. The rack meshes with a gear 13. The gear 13 is coaxially mounted on the main shaft of a motor 14. The motor 14 drives the gear 13 to rotate, thereby driving the rack and the pusher arm 1 to move back and forth along the length direction. As a preferred structure, the pusher arm 1 is made of a rectangular tube to reduce its weight.

[0041] Preferred, such as Figures 3 to 5 As shown, a feed trough 21 is provided on one side of the lower end of the feed tube 2 for feeding capacitors to the lower end of the feed tube 2. A lifting plate 22 is provided inside the feed tube 2, which is controlled to rise and fall by a lifting cylinder 23 located at the bottom of the feed tube 2. At the same height on opposite inner walls of the feed tube 2, there is an inclined upward spring plate 24 to support the capacitors above. During operation, the lifting cylinder 23 drives the lifting plate 22 to rise, thereby pushing the capacitors inside the feed tube 2 upward. When the capacitors rise and pass the spring plates 24, the spring plates 24 are pressed against the side wall of the feed tube 2 to avoid the capacitors. After the capacitors pass the spring plates 24, they are supported on the spring plates 24. Then the lifting plate 22 is lowered, so that the capacitors in the feed trough 21 roll to the top of the lifting plate 22, and then the capacitors can be continuously fed upward. As a preferred structure, the feed trough 21 is designed with an inclined structure to facilitate the automatic rolling of the capacitors inside into the feed tube 2.

[0042] Preferred, combined Figure 1 , Figures 3 to 5 As shown, the pressure plate 3 is vertically mounted at the front end of a pull rod 31. The pull rod 31 passes parallel through a mounting plate 15 mounted on the top surface of the pusher arm 1. A stop block 32 is provided at the rear end of the pull rod 31. A return spring 33 is sleeved on the part of the pull rod 31 corresponding to the part between the stop block 32 and the mounting plate 15.

[0043] When the pressure plate 3 is in contact with the front end of the pusher arm 1, the return spring 33 is in a compressed state. The bottom edge of the pressure plate 3 is lower than the top surface of the material tube 2. In this way, when the pusher arm 1 moves backward to the outside of the top outlet of the material tube 2, the outer wall of the material tube 2 can be used to block the pressure plate 3. When the pressure plate 3 moves backward with the pusher arm 1, the distance between the pressure plate 3 and the slot 101 increases, thereby making room for the capacitor to enter. When the capacitor is lifted between the slot 101 and the pressure plate 3, the pusher arm 1 moves forward, so that the slot 101 pushes the capacitor box pressure plate 3 to move. During this process, under the action of the return spring 33, the pressure plate 3 always sticks tightly to the outer wall of the material tube 2 until the pressure plate 3 presses against the capacitor. Then, the pusher arm 1 continues to move forward, which can drive the capacitor to move together.

[0044] A vertical control lever 6 is provided on the outer side of the wire cutter 4, facing upwards from the front end of the pusher arm 1. It is movable in a vertical direction. Specifically, when it rises, the height of its top surface is higher than the bottom surface of the pressure plate 3, and when it falls, the height of its top surface is lower than the bottom surface of the pressure plate 3. The control lever 6 is mainly used to open the pressure plate 3 that clamps the capacitor. The specific principle is as follows: After the capacitor lead 91 is welded and cut, the pusher arm 1 will move the pressure plate 3 to the outside of the control lever 6. During this process, the control lever 6 needs to be lowered to a height lower than the bottom surface of the pressure plate 3 so that the pressure plate 3 can smoothly pass over the control lever 6. Then the control lever 6 is raised so that its top surface is higher than the bottom surface of the pressure plate 3. Next, the pusher arm 1 is moved backward. During this process, the control lever 6 will block the pressure plate 3 from moving backward, thereby gradually increasing the distance between the slot 101 and the pressure plate 3. When the distance between the lower edge of the slot 101 and the pressure plate 3 is greater than the diameter of the capacitor, the capacitor will automatically fall, completing the unloading operation. After the unloading is completed, the control lever 6 is lowered, and the pressure plate 3 will automatically move towards the pusher arm 1 under the action of the return spring 33. Specifically, the raising and lowering of the control lever 6 can be controlled by a vertically set cylinder.

[0045] Preferred, such as Figures 3 to 5 As shown, the pull rod 31 includes a front rod 311 and a rear rod 312 rotatably connected at one end. The axis of rotation is horizontal and perpendicular to the pusher arm 1. The pressure plate 3 is located at the front end of the front rod 311, and the stop block 32 is located at the rear end of the rear rod 312. Both the front rod 311 and the rear rod 312 can pass through the mounting plate 15 and the return spring 33.

[0046] When the pressure plate 3 presses the capacitor, the front rod 311 passes through the mounting plate 15; when the front rod 311 is located outside the mounting plate 15, the distance between the pusher arm 1 and the pressure plate 3 is greater than the outer diameter of the capacitor to be welded.

[0047] The bottom of the control lever 6 is located at the top of a support spring 61. The horizontal height of the lower end of the support spring 61 is kept fixed. When the support spring 61 is in its natural state, the top surface of the control lever 6 is higher than the bottom surface of the pressure plate 3. The side of the upper end of the control lever 6 facing the pusher arm 1 is a rear inclined surface 601, which has an angle with the horizontal plane of less than or equal to 60 degrees. The side of the upper end of the control lever 6 opposite to the rear inclined surface 601 has a front inclined surface 602, which has an angle with the vertical plane of less than or equal to 5 degrees and greater than 1 degree.

[0048] By adopting the above design scheme, not only can the pressure plate 3 automatically press the capacitor, but also the pressure plate 3 can automatically release the welded capacitor by simply moving the pusher arm 1, reducing the use of automatic components and making the software control logic of the device simpler.

[0049] The specific working principle is as follows: When taking materials, combined with... Figure 3 Of Figure 5 As shown, the outer wall of the feed tube 2 abuts against the pressure plate 3. Under the action of the return spring 33, the rear rod 312 and the front rod 311 are on the same straight line. Then, by moving the pusher arm 1 forward, the slot 101 and the pressure plate 3 together press the capacitor tightly. At this time, the front rod 311 passes through the mounting plate 15, so the front rod 311 cannot swing upward around the connection with the rear rod 312, thus ensuring the stability of the capacitor clamping. Figure 7 , Figure 8 As shown, after the lead wire 91 is cut, the pusher arm 1 moves the pressure plate 3 towards the control rod 6. The lower edge of the outer side of the pressure plate 3 pushes the control rod 6 downward by sliding contact with the rear inclined surface 601, compressing the support spring 61. The purpose of setting the angle between the rear inclined surface 601 and the horizontal plane to be less than or equal to 60 degrees is to make it easier for the control rod 6 to descend under the push of the pressure plate 3. Figure 9 As shown, when the control lever 6 descends below the bottom surface of the pressure plate 3, the pressure plate 3 will smoothly pass over the control lever 6. Under the action of the support spring 61, the control lever 6 will automatically rise, and the front inclined surface 602 will contact the lower edge of the inner side of the pressure plate 3, stopping the forward movement of the pusher arm 1. Figure 10 , Figure 11 As shown, the pusher arm 1 moves backward. Because the pressure plate 3 is blocked by the front inclined plane 602, and the angle between the front inclined plane 602 and the vertical plane is less than or equal to 5 degrees and greater than 1 degree, the downward component of the force applied by the pressure plate 3 to the front inclined plane 602 is less than the component of the force applied to the rear inclined plane 601, making it difficult to push the control lever 6 down. Therefore, the position of the pressure plate 3 is temporarily fixed. As the pusher arm 1 moves backward, the return spring 33 is compressed, and the distance between the pressure plate 3 and the front end of the pusher arm 1 gradually increases. When the distance increases to match the outer diameter of the capacitor, the electric motor will automatically drop. Figure 12As shown, the pusher arm 1 is then moved backward to remove the front rod 311 from the mounting plate 15. At this time, the rotating connection between the front rod 311 and the rear rod 312 is also exposed on the outside of the mounting plate 15. The pressure plate 3 will then slide upward along the front inclined surface 602 as the pusher arm 1 continues to move. The front rod 311 will swing upward around the connection with the rear rod 312 until the pressure plate 3 separates from the front inclined surface 602. Then, under the force of the return spring 33, the pull rod 31 will be pulled towards the rear end of the pusher arm 1, causing the front rod 311 to pass through the mounting plate 15 again. The user can select the return spring 33 according to the weight of the welding capacitor. Different weights require different clamping forces, therefore the return spring 33 will also have different required forces. The support spring 61 only needs to ensure that the front rod 311 does not move downward under the force generated by the pressure plate 3 on the front inclined surface 602 when it separates from the mounting plate 15. In practice, this can be verified through multiple tests.

[0050] Preferably, the top surface of the pusher arm 1 is provided with a T-shaped groove along the length direction, and the bottom of the stop block 32 is provided with a T-shaped block. The T-shaped block is slidably disposed in the T-shaped groove to ensure the stability of the overall installation position of the rear rod 312 and the pull rod 31.

[0051] Preferred, such as Figure 1 , Figure 3 and Figures 7 to 12 As shown, the control lever 6 passes vertically through a sliding block 62. The bottom of the sliding block 62 is provided with a support plate, and the support spring 61 is provided on the top surface of the support plate. The position of the sliding block 62 along the length of the pusher arm 1 is adjustable so as to adjust the working position of the control lever 6 according to the change of the cutting length of the lead wire 91, so that the control lever 6 is closer to the position of the pressure plate 3 when cutting the lead wire 91, thereby shortening the moving stroke of the pusher arm 1 during the unloading process. Specifically, a screw or a linear motor can be used to control the movement of the sliding block 62.

[0052] Preferred, such as Figure 3 , Figure 8 and Figure 9 As shown, the sliding block 62 has a discharge groove 63 on the side facing the material tube 2, which is used to receive the unloaded capacitor. This structure allows the discharge groove 63 to move along the length of the pusher arm 1 with the control rod 6 to adapt to changes in the unloading position.

[0053] Preferred, combined Figure 3 , Figure 6 and Figure 8As shown, the lower end of the pressure plate 3 facing the material tube 2 is provided with a horizontally arranged protrusion 34. The outer wall of the material tube 2 facing the pressure plate 3 is provided with a limiting groove 201 that matches the protrusion 34. When the pressure plate 3 contacts the material tube 2, the protrusion 34 is locked in the limiting groove 201. At this time, even if the front rod 311 is separated from the mounting plate 15, it can prevent the front rod 311 from swinging upward and affecting the increase of the distance between the pressure plate 3 and the locking groove 101, thereby achieving the purpose of smooth material picking.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to be the only or limiting of the invention. Those skilled in the art should understand that various changes or equivalent substitutions made to the present invention without departing from its scope are all within the protection scope of the present invention.

Claims

1. A flexible straight capacitor lead welding system, characterized in that, include: The pusher arm (1) is set horizontally, and its front end is provided with a slot (101) in the horizontal direction. The pusher arm (1) is set to move horizontally in the front-back direction. The feed tube (2) is vertically positioned below the pusher arm (1) and is used to provide a horizontal capacitor to the slot (101); The pressure plate (3) is vertically disposed at the front end of the pusher arm (1) and is moved along the length direction of the pusher arm (1). The pressure plate (3) is located on the outside of the material tube (2) along the front end of the pusher arm (1). Two wire cutters (4) are provided, which are respectively located on both sides of the moving trajectory of the pusher arm (1) and on the same side of the material tube (2) as the pressure plate (3); Two welding guns (5) are provided, which are respectively located on both sides of the moving trajectory of the pusher arm (1) and between the material tube (2) and the wire cutter (4) on the same side. The two welding guns (5) are moved along the connecting line direction. Both sides of the working part of the welding gun (5) are provided with wire-binding holes (51) for threading capacitor leads (91). The working parts of the wire cutter (4) and the welding gun (5) are at the same horizontal level as the midpoint of the height direction of the slot (101). The pressure plate (3) is vertically set at the front end of a pull rod (31). The pull rod (31) passes parallel through a mounting plate (15) set on the top surface of the pusher arm (1). A stop block (32) is provided at the rear end of the pull rod (31). A return spring (33) is sleeved on the part of the pull rod (31) corresponding to the stop block (32) and the mounting plate (15). A vertical control rod (6) is provided on the outside of the wire cutter (4) along the front end of the pusher arm (1), and it is set to move in the vertical direction. The pull rod (31) includes a front rod (311) and a rear rod (312) rotatably connected at one end. The axis of rotation is horizontal and perpendicular to the pusher arm (1). The pressure plate (3) is located at the front end of the front rod (311), and the stop block (32) is located at the rear end of the rear rod (312). The upper end of the control rod (6) facing the pusher arm (1) is a rear inclined surface (601). After the capacitor leads (92) are soldered and cut, the pressure plate (3) is moved to the outside of the control rod (6) using the pusher arm (1). During the process, the control rod (6) needs to be lowered to a height lower than the bottom surface of the pressure plate (3) so that the pressure plate (3) passes over the control rod (6). Then the control rod (6) is raised so that its top surface is higher than the bottom surface of the pressure plate (3). Then the pusher arm (1) is moved backward. During this process, the control rod (6) will block the pressure plate (3) from moving backward, so that the distance between the slot (101) and the pressure plate (3) gradually increases. When the distance between the lower edge of the slot (101) and the pressure plate (3) is greater than the diameter of the capacitor, the capacitor will fall automatically.

2. The flexible straight capacitor lead welding system according to claim 1, characterized in that, The pusher arm (1) has a guide rail (11) on each side parallel to its length direction. The guide rail (11) slides on a base (12). One of the guide rails (11) has a rack that meshes with a gear (13) in the middle section of the outer height direction. The gear (13) is coaxially mounted on the main shaft of a motor (14).

3. The flexible straight capacitor lead welding system according to claim 1, characterized in that, A feed trough (21) is provided on one side of the lower end of the feed tube (2) for conveying capacitors to the lower end of the feed tube (2). A lifting plate (22) is provided inside the feed tube (2), which is controlled to lift by a lifting cylinder (23) located at the bottom of the feed tube (2). A spring plate (24) with an upward tilt is provided at the same height on the inner wall opposite to the feed tube (2) to support the capacitor above.

4. The flexible straight capacitor lead welding system according to claim 1, characterized in that, When the pressure plate (3) is in contact with the front end of the pusher arm (1), the reset spring (33) is in a compressed state; the bottom edge of the pressure plate (3) is lower than the top surface of the material tube (2).

5. The flexible straight capacitor lead welding system according to claim 1, characterized in that, When the pressure plate (3) presses the capacitor, the front rod (311) passes through the mounting plate (15); when the front rod (311) is located outside the mounting plate (15), the distance between the pusher arm (1) and the pressure plate (3) is greater than the outer diameter of the capacitor to be welded. The bottom of the control lever (6) is located at the top of a support spring (61). The horizontal height of the lower end of the support spring (61) is kept fixed. When the support spring (61) is in its natural state, the top surface of the control lever (6) is higher than the bottom surface of the pressure plate (3), and the angle between it and the horizontal plane is less than or equal to 60 degrees. The upper end of the control lever (6) has a front slope (602) on the side opposite to the rear slope (601), and the angle between it and the vertical plane is less than or equal to 5 degrees and greater than 1 degree.

6. A flexible straight capacitor lead welding system according to claim 5, characterized in that, The top surface of the pusher arm (1) is provided with a T-shaped groove along the length direction, and the bottom of the stop block (32) is provided with a T-shaped block, which is slidably disposed in the T-shaped groove.

7. A flexible straight capacitor lead welding system according to claim 5, characterized in that, The control lever (6) is vertically inserted into a sliding block (62). The bottom of the sliding block (62) is provided with a support plate, and the support spring (61) is located on the top surface of the support plate. The position of the sliding block (62) along the length of the pusher arm (1) has an adjustment function.

8. A flexible straight capacitor lead welding system according to claim 7, characterized in that, The sliding block (62) has a discharge groove (63) on the side facing the material tube (2) for receiving the unloaded capacitor.

9. A flexible straight capacitor lead welding system according to claim 5, characterized in that, The lower end of the pressure plate (3) facing the material tube (2) is provided with a horizontally arranged protrusion (34). The outer wall of the material tube (2) facing the pressure plate (3) is provided with a limiting groove (201) that matches the protrusion (34). When the pressure plate (3) contacts the material tube (2), the protrusion (34) is locked in the limiting groove (201).

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