Parallel resistance welding apparatus

Abstract

The application discloses a parallel resistance welding device, and belongs to the field of electronic component welding. The device comprises a machine table, a multi-axis movement platform arranged on the machine table, a welding head fixed on the Z-axis moving end of the multi-axis movement platform, and an axial displacement part movably arranged on the upper end of the machine table and located below the welding head. The device further comprises two material clamping assemblies symmetrically arranged on the machine table and respectively located on the two sides of the axial displacement part. The material clamping assembly comprises a first cylinder and a first guide rail fixed on the upper end of the machine table, a first sliding table slidingly connected to the first guide rail, and an extension seat fixed on one side of the first sliding table. The material clamping assemblies are symmetrically arranged on the two sides of the axial displacement part, the first cylinder is used for driving the material clamping plate to move forward to a working position, the free end of the tin bar is accommodated in the groove, and the free end of the tin bar is physically limited and blocked by the inner wall of the groove when the welding head is lifted, so that the path of the free end adhering to the welding head and rising is blocked, and false welding and short circuit caused by material displacement are avoided.

Description

Technical Field

[0001] This invention relates to the field of electronic component welding, and more specifically, to a parallel resistance welding device. Background Technology

[0002] Parallel resistance welding equipment refers to a continuous automated packaging and assembly device that uses resistance heat as an energy source and applies pressure and welding current to the workpiece to be welded through a pair or more sets of parallel electrode welding heads, so as to cause local melting or solid-phase bonding at the contact surface.

[0003] In the precision assembly process of circuit boards and wires, long strips of solder are typically supplied and heated by a soldering head to fix the wires in batches to the corresponding solder joints on the circuit board. During the actual soldering process, as the material is intermittently advanced and the soldering head presses down, the long strips of solder need to be gradually melted or segmented, thus forming free ends in the soldering edge area. However, in existing resistance soldering equipment, when the edge area is completed and the soldering head rises to reset, the free ends of the segmented solder bars, being relatively light, are easily pulled upwards with the soldering head by the surface tension of the molten solder or the stickiness of residual flux, resulting in disordered displacement or adhesion. This causes the free ends to be mistakenly pressed onto adjacent pins in subsequent soldering cycles, leading to cold solder joints and short circuits. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide a parallel resistance welding device.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A parallel resistance welding device includes a machine base, a multi-axis motion platform mounted on the machine base, a welding head fixed on the Z-axis moving end of the multi-axis motion platform, and an axial displacement part movably mounted on the upper part of the machine base and located below the welding head. It also includes two bundle assemblies symmetrically arranged on the machine base and located on both sides of the axial displacement section; The material-binding assembly includes a first cylinder and a first guide rail fixed to the upper part of the machine platform, a first slide table slidably connected to the first guide rail, an extension seat fixed to one side of the first slide table, a material-binding plate fixed to one side of the extension seat, and a groove formed at the lower end of the material-binding plate. The telescopic end of the first cylinder is fixed to the other side of the first slide table.

[0007] Furthermore, the Z-axis moving end of the multi-axis motion platform is also fixedly connected to a fume extraction unit for removing fumes and an industrial camera for visual inspection of the weld.

[0008] Furthermore, the material bundle plate is provided with multiple constraint components, which include multiple constraint parts movably disposed in the material bundle plate and extending into the groove, and a reset component disposed in the material bundle plate to limit the multiple constraint parts and to drive the multiple constraint parts to reset.

[0009] Furthermore, the constraint part includes a second movable groove opened inside the material-bundling plate, a slide block slidably connected in the second movable groove, multiple second connecting rods fixed to the lower end of the slide block, and an elastic member with one end connected to the upper end of the slide block and the other end connected to the inner wall of the second movable groove. The lower ends of the multiple second connecting rods penetrate the material-bundling plate and extend into the groove, and the bottom ends of the multiple second connecting rods are all fixed with pressure plates.

[0010] Furthermore, the reset assembly includes a first movable groove formed inside the material-binding plate and connected to the second movable groove, a movable plate slidably connected in the first movable groove and movably sleeved outside the multiple second connecting rods, multiple first connecting rods fixed to the upper end of the movable plate, a frame fixed to the upper end of the material-binding plate, a second cylinder fixed to the upper end of the frame, a second guide rail slidably connected to one side of the frame, and a second slide table slidably connected to the second guide rail and whose upper end is connected to the telescopic end of the second cylinder. The upper ends of the multiple first connecting rods penetrate the material-binding plate and are fixedly connected to the lower end of the second slide table.

[0011] Furthermore, the pressure plates corresponding to the multiple constraint parts each have independent degrees of freedom of movement in the vertical direction, and the multiple pressure plates are arranged in a parallel array along the length direction of the groove to form a continuous multi-segment constraint structure when pressing the solder bar.

[0012] Furthermore, the interior of the material clamping plate and the extension seat is also provided with positioning components for clamping and transferring waste materials.

[0013] Furthermore, the positioning assembly includes a third movable groove formed inside the bundle plate and the extension seat and connected to the groove, two movable blocks slidably connected in the third movable groove, two clamping plates located in the groove and respectively fixed to one side of the two movable blocks for clamping the solder bars, a bidirectional lead screw rotatably connected in the third movable groove and screwed to the two movable blocks, and a guide rod fixed in the third movable groove. The two movable blocks are movably sleeved on the outside of the guide rod. A motor is fixed to one outer surface of the extension seat, and the output shaft of the motor is connected to the bidirectional lead screw.

[0014] Furthermore, two symmetrically fixed material boxes for collecting solder bars are also fixed on the upper part of the machine platform. The two material boxes are located on both sides of the axial displacement part, and each material box is located between the corresponding first guide rail and the axial displacement part.

[0015] Furthermore, the movable plate slides horizontally or is vertically sleeved on the outside of the multiple second connecting rods, and the movable plate is disposed below the slide block; when the movable plate moves downward, it releases the upward limiting constraint on the slide block, so that the slide block drives the pressure plate downward under the action of the elastic member; when the movable plate moves upward, it interferes with the slide block to overcome the elastic force of the elastic member and forcibly lift the slide block.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] (1) By symmetrically setting up the material-binding assembly on both sides of the axial displacement part, the first cylinder drives the material-binding plate to move forward to the working position, so that the free end of the solder bar is accommodated in the groove. When the solder head is lifted, the inner wall of the groove forms a physical limit block on the free end of the solder bar, blocking the path of the free end sticking and rising with the solder head, thus avoiding the false soldering and short circuit caused by material displacement.

[0018] (2) By configuring a multi-segment constraint assembly containing independent vertical degree-of-freedom pressure plates inside the bundle plate, the second cylinder drives the movable plate to move down to release the slide, and under the elastic force of the elastic element, the multiple pressure plates are pressed tightly against the surface of the fixture or solder bar respectively, forming an adaptive continuous multi-segment surface constraint, locking the lateral and longitudinal degrees of freedom of the free end of the solder bar, and preventing it from twisting or slipping.

[0019] (3) By integrating positioning components in the bundle plate and extension seat, the motor drives the bidirectional screw to rotate so that the two clamping plates move towards each other to clamp the waste tin bars in the groove. In conjunction with the contraction of the first cylinder, the material is reset and transferred to the top of the material box to release it, thus realizing the automatic collection and orderly dropping of waste tin bars. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the multi-axis motion platform, smoke extraction unit, and industrial camera structure of the present invention; Figure 3 This is a schematic diagram of the bundle assembly structure of the present invention; Figure 4 This is a schematic diagram of the multi-segment constraint assembly, motor, and third movable slot structure of the present invention; Figure 5 This is a cross-sectional view of the bundle plate portion of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point A in the middle; Figure 7 This is a schematic diagram of the constraint part structure of the present invention; Figure 8 This is a schematic diagram of the positioning component structure of the present invention; Figure 9 This is a schematic diagram showing the positions of the circuit board and solder bars in this invention.

[0021] Explanation of the labels in the diagram: 1. Machine base; 2. Multi-axis motion platform; 21. Fume extraction unit; 22. Industrial camera; 3. Welding head; 4. Axial displacement unit; 5. Material clamping assembly; 51. First cylinder; 52. First guide rail; 53. First slide table; 54. Extension seat; 55. Material clamping plate; 56. Groove; 6. Multi-segment constraint assembly; 61. Reset assembly; 611. Frame; 612. Second cylinder; 613. Second guide rail; 614. Second slide table; 61 5. First connecting rod; 616. Movable plate; 617. First movable slot; 62. Constraint part; 621. Second movable slot; 622. Slide; 623. Elastic element; 624. Second connecting rod; 625. Pressure plate; 7. Positioning assembly; 71. Motor; 72. Bidirectional lead screw; 73. Guide rod; 74. Movable block; 75. Clamping plate; 76. Third movable slot; 8. Circuit board; 81. Solder joint; 9. Lead wire; 10. Solder bar. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 9 A parallel resistance welding device includes a machine base 1, a multi-axis motion platform 2 mounted on the machine base 1, a welding head 3 fixed on the Z-axis moving end of the multi-axis motion platform 2, and an axial displacement part 4 movably mounted on the upper end of the machine base 1 and located below the welding head 3. A fume extraction unit 21 and an industrial camera 22 are fixedly connected to the Z-axis moving end of the multi-axis motion platform 2. The multi-axis motion platform 2 can drive the welding head 3 to move axially along the X and Z axes, facilitating the adjustment of the position and height of the welding head 3. The fume extraction unit 21 is connected to a negative pressure pipe to remove the fumes generated during welding. The industrial camera 22 can perform visual inspection of the weld area. Two material-binding assemblies 5 are symmetrically arranged on the machine base 1. The two material-binding assemblies 5 are located on both sides of the axial displacement part 4. The material-binding assembly 5 includes a first cylinder 51 and a first guide rail 52 fixed to the upper end of the machine base 1, a first slide 53 slidably connected to the first guide rail 52, an extension seat 54 fixed to one side of the first slide 53, a material-binding plate 55 fixed to one side of the extension seat 54, and a groove 56 opened at the lower end of the material-binding plate 55. The telescopic end of the first cylinder 51 is fixed to the other side of the first slide 53.

[0024] like Figure 9 As shown, the fixture with the circuit board 8 fixed is installed on the moving end of the axial displacement part 4. The solder joint 81 of the circuit board 8 is pre-welded with pins 9 and solder bars 10. The solder bars 10 are long strips and are directly soldered to the pins 9 to form a whole. This whole is pre-welded onto the circuit board 8. The position of the pins 9 corresponds to the position of the solder joint 81 on the circuit board 8.

[0025] like Figure 1 and Figure 9 As shown, the axial displacement control unit 4 drives the circuit board 8 to move, so that the circuit board 8 moves to below the solder head 3. The multi-axis motion platform 2 drives the solder head 3 to descend, so that the solder head 3 presses on the solder bar 10 and the lead wire 9. When the solder head 3 works, it generates heat that melts the solder bar 10. The melted solder bar 10 is divided into multiple solder points according to the multiple solder points 81. After the multiple solder points cool down, they are shaped and positioned to fix the lead wire 9 on the solder points 81, thus completing the soldering action.

[0026] like Figure 9 As shown, since both ends of the solder bar 10 are free ends, when the soldering head 3 heats and melts the area of ​​the solder bar 10 on the solder joint 81 adjacent to the free ends, the rigid connection between the free ends and the base is completely broken, and the free ends become isolated free bodies. When the soldering head 3 completes the soldering and moves upward to reset, if there is a lack of reverse mechanical limiting force to counteract the surface tension of the molten solder or the viscosity of the flux, the free ends of the relatively light solder bar 10 are prone to disordered displacement as they move upward synchronously with the soldering head 3. The solder bar 10 that is mistakenly lifted is treated as a normal soldering object as the soldering head 3 descends during the second soldering, and is pressed onto the pins of the second soldering area and heat-cured, resulting in cold solder joints and short circuits.

[0027] To address this issue, when the soldering head 3 descends to solder the leftmost and rightmost solder joints 81 on the circuit board 8, the binding components 5 on the left and right sides can be controlled to operate separately. The binding components 5 constrain the free ends of the solder bars 10, preventing isolated solder bars 10 from adhering to the soldering head 3 and affecting the second soldering operation. Specifically, the binding components 5 operate as follows: the first cylinder 51 is controlled to operate, pushing the first slide 53 to slide on the first guide rail 52. Simultaneously, the extension seat 54 and the binding plate 55 move synchronously, allowing the binding plate 55 to move above the axial displacement part 4. At this time, the free ends of the solder bars 10 on the circuit board 8 can enter the groove 56. When the soldering head 3 completes soldering and lifts up, the free ends of the solder bars 10 separated from the mother body are constrained by the binding plate 55, preventing them from adhering to the soldering head 3 and rising with it. This avoids the occurrence of poor soldering and short circuits at solder joints 81 caused by the free ends adhering to the soldering head 3.

[0028] like Figures 4 to 6As shown, a multi-segment constraint assembly 6 is provided on the material bundle plate 55. The multi-segment constraint assembly 6 includes a plurality of constraint parts 62 that are movably disposed in the material bundle plate 55 and extend into the groove 56, and a reset assembly 61 disposed in the material bundle plate 55 to limit the plurality of constraint parts 62 and drive the plurality of constraint parts 62 to reset.

[0029] The constraint part 62 includes a second movable groove 621 opened inside the material binding plate 55, a slide block 622 slidably connected in the second movable groove 621, multiple second connecting rods 624 fixed to the lower end of the slide block 622, and an elastic member 623 with one end connected to the upper end of the slide block 622 and the other end connected to the inner wall of the second movable groove 621. The lower ends of the multiple second connecting rods 624 penetrate through the material binding plate 55 into the groove 56 and are fixedly connected to a pressure plate 625.

[0030] The reset assembly 61 includes a first movable groove 617 formed inside the material clamping plate 55 and connected to the second movable groove 621, a movable plate 616 slidably connected in the first movable groove 617 and movably sleeved outside the multiple second connecting rods 624, multiple first connecting rods 615 fixed to the upper end of the movable plate 616, a frame 611 fixed to the upper end of the material clamping plate 55, a second cylinder 612 fixed to the upper end of the frame 611, a second guide rail 613 slidably connected to one side of the frame 611, and a second slide 614 slidably connected to the second guide rail 613 and whose upper end is connected to the telescopic end of the second cylinder 612. The upper ends of the multiple first connecting rods 615 pass through the material clamping plate 55 and are fixedly connected to the lower end of the second slide 614.

[0031] By adopting the above technical solution, when the free end of the solder bar 10 enters the groove 56, the second cylinder 612 is extended to drive the second slide 614 to move downward. The downward movement of the second slide 614 drives the first connecting rod 615 and the movable plate 616 to move downward. The movable plate 616 moves downward in the first movable groove 617 until it reaches the bottom of the first movable groove 617. Since the movable plate 616 does not limit the position of the slide block 622 after it reaches the bottom of the first movable groove 617, the force generated by the elastic element 623 can push the slide block 622 downward. The downward movement of the slide block 622 drives the second connecting rod 624 and the pressure plate 625 to move downward, causing multiple pressure plates 625 to move downward synchronously. Because multiple pressure plates 625 are provided, and each pressure plate 625 has an independent degree of freedom in the vertical direction, the pressure plates 625 that do not press the solder bar 10 directly contact the fixture, while the pressure plates 625 that press the solder bar 10 are in close contact with the solder bar 10. Each contact point can establish a deterministic physical contact, avoiding local suspension and constraint failure due to uneven workpiece surface. The array of multiple sets of constraint parts 62 and their pressure plates 625 constitutes a continuous multi-point adaptive surface constraint structure, which stably restricts the solder bar 10 within the groove 56. This not only prevents it from rising with the solder head 3, but also effectively restricts the degree of freedom of the solder bar 10 in the lateral and longitudinal directions, preventing the material from twisting or slipping.

[0032] like Figure 4 and Figure 8 As shown, a positioning assembly 7 is also provided inside the bundled plate 55 and the extension seat 54. The positioning assembly 7 includes a third movable groove 76 that is opened inside the bundled plate 55 and the extension seat 54 and communicates with the groove 56, two movable blocks 74 that are slidably connected in the third movable groove 76, two clamping plates 75 located in the groove 56 and fixed to one side of the two movable blocks 74 respectively, a bidirectional lead screw 72 that is rotatably connected in the third movable groove 76 and screwed to the two movable blocks 74, and a guide rod 73 fixed in the third movable groove 76. The two movable blocks 74 are movably sleeved on the outside of the guide rod 73. A motor 71 is fixedly connected to the outer surface of one side of the extension seat 54. The output shaft of the motor 71 is connected to the bidirectional lead screw 72.

[0033] like Figure 3 As shown, two material boxes are symmetrically fixed on the upper end of the machine base 1. The two material boxes are located on both sides of the axial displacement part 4, and the material boxes are located between the first guide rail 52 and the axial displacement part 4.

[0034] When the movable plate 616 moves to the bottom of the first movable groove 617, the solder bar 10 is separately pressed and positioned by multiple pressure plates 625. After the soldering head 3 completes the soldering of the solder joint 81 on the circuit board 8, the second cylinder 612 is controlled to retract, driving the second slide 614 and the first connecting rod 615 to rise. The rise of the first connecting rod 615 drives the movable plate 616 to rise in the first movable groove 617. The upper end surface of the movable plate 616 contacts the bottom end surface of the slide block 622 located above it and pushes the slide block 622 upward, thereby causing the slide block 622 to rise in the second movable groove 621. The elastic element 623 of the slide block 622 is compressed. At the same time as the slide block 622 rises, the pressure plate 625 is driven to rise through the second connecting rod 624, so that the pressure plate 625 is reset and the positioning of the solder bar 10 is canceled. Then, the motor 71 is controlled to drive the bidirectional lead screw 72 to rotate. The rotation of the bidirectional lead screw 72 drives the two movable blocks 74 to move towards each other. The movement of the two movable blocks 74 towards each other drives the two clamping plates 75 to move towards each other and clamp the solder bar 10 in the groove 56. Then, the first cylinder 51 is controlled to retract, driving the first slide table 53 to move in the direction of the first cylinder 51, so that the material binding plate 55 moves above the material box. Subsequently, the motor 71 is controlled to drive the bidirectional lead screw 72 to rotate, driving the two movable blocks 74 and the clamping plates 75 to move away from each other, releasing the clamping of the solder bar 10 in the groove 56, allowing the solder bar 10 to fall into the material box, completing the material collection. The material binding assembly 5 and the positioning assembly 7 are reset, waiting for the next positioning and constraint action of the free end of the solder bar 10.

[0035] Usage: When this device is working, the fixture carrying the circuit board 8 is installed on the moving end of the axial displacement part 4 and transported to the bottom of the welding head 3. The multi-axis motion platform 2 drives the welding head 3 to descend and press the solder bar 10 and lead wire 9 at the pins and melt them with electricity to complete the welding. When welding the edge solder joint 81 of the circuit board 8, the first cylinder 51 is extended to push the first slide 53 to slide on the first guide rail 52, thereby driving the extension seat 54 and the binding plate 55 to move forward to the working position, so that the free end of the solder bar 10 extends into the groove 56 at the lower end of the binding plate 55. Then the second cylinder 612 extends and drives the second slide 614, the first connecting rod 615 and the movable plate 616 to move down synchronously to the bottom in the first movable groove 617, releasing the limit on the slide 622, so that the slide 622 moves down along the second movable groove 621 under the elastic force of the elastic member 623, and then through the second Linkage 624 drives multiple pressure plates 625 with vertical independent degrees of freedom to press parallel against the surface of solder bar 10 to form a continuous surface constraint. When the soldering head 3 completes the welding and lifts up, the free end of the blocked solder bar 10 is physically restricted by the pressure plate 625 and the groove 56 and remains in place. Then, the second cylinder 612 retracts and resets, driving the movable plate 616 to move upward to forcibly pull back the slide block 622 and the pressure plate 625 to release the positioning. At this time, the motor 71 starts and drives the bidirectional lead screw 72 to rotate, causing the two movable blocks 74 sliding on the guide rod 73 to move towards each other in the third movable groove 76, driving the two clamping plates 75 to clamp the waste solder bar 10 in the groove 56. The first cylinder 51 retracts and pulls back the first slide 53, causing the material binding plate 55 to move above the material box. Finally, the motor 71 reverses and drives the clamping plates 75 to move in opposite directions to release the material. The material falls into the material box to complete the automatic material collection.

[0036] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A parallel resistance welding device, comprising a machine base (1), a multi-axis motion platform (2) mounted on the machine base (1), a welding head (3) fixed on the Z-axis moving end of the multi-axis motion platform (2), and an axial displacement part (4) movably mounted on the upper end of the machine base (1) and located below the welding head (3), characterized in that: It also includes two bundle assemblies (5) symmetrically arranged on the machine base (1) and located on both sides of the axial displacement part (4); The material bundle assembly (5) includes a first cylinder (51) and a first guide rail (52) fixed to the upper end of the machine base (1), a first slide (53) slidably connected to the first guide rail (52), an extension seat (54) fixed to one side of the first slide (53), a material bundle plate (55) fixed to one side of the extension seat (54), and a groove (56) opened at the lower end of the material bundle plate (55). The telescopic end of the first cylinder (51) is fixed to the other side of the first slide (53). The bundle plate (55) is provided with multiple constraint components (6), the multiple constraint components (6) include multiple constraint parts (62) movably disposed in the bundle plate (55) and extending into the groove (56), and a reset component (61) disposed in the bundle plate (55) to limit the multiple constraint parts (62) and to drive the multiple constraint parts (62) to reset. The constraint part (62) includes a second movable groove (621) opened inside the bundle plate (55), a slide (622) slidably connected in the second movable groove (621), a plurality of second connecting rods (624) fixed to the lower end of the slide (622), and an elastic member (623) with one end connected to the upper end of the slide (622) and the other end connected to the inner wall of the second movable groove (621). The lower ends of the plurality of second connecting rods (624) penetrate through the bundle plate (55) and extend into the groove (56), and the bottom ends of the plurality of second connecting rods (624) are all fixed with pressure plates (625). The reset assembly (61) includes a first movable groove (617) opened inside the bundled plate (55) and connected to the second movable groove (621), a movable plate (616) slidably connected in the first movable groove (617) and movably sleeved outside the multiple second connecting rods (624), multiple first connecting rods (615) fixed to the upper end of the movable plate (616), a frame (611) fixed to the upper end of the bundled plate (55), a second cylinder (612) fixed to the upper end of the frame (611), a second guide rail (613) slidably connected to one side of the frame (611), and a second slide (614) slidably connected to the second guide rail (613) and whose upper end is connected to the telescopic end of the second cylinder (612). The upper ends of the multiple first connecting rods (615) penetrate the bundled plate (55) and are fixedly connected to the lower end of the second slide (614). The movable plate (616) is vertically sleeved on the outside of multiple second connecting rods (624), and the movable plate (616) is arranged below the slide (622); when the movable plate (616) moves downward, it releases the upward limiting constraint on the slide (622), so that the slide (622) drives the pressure plate (625) downward under the action of the elastic element (623); when the movable plate (616) moves upward, it interferes with the slide (622) to overcome the elastic force of the elastic element (623) and forcibly lift the slide (622).

2. The parallel resistance welding equipment according to claim 1, characterized in that: The Z-axis moving end of the multi-axis motion platform (2) is also fixedly connected to a fume extraction unit (21) for removing fumes and an industrial camera (22) for visual inspection of the weld.

3. The parallel resistance welding equipment according to claim 1, characterized in that: Each of the multiple constraint parts (62) has an independent degree of freedom of motion in the vertical direction. The multiple pressure plates (625) are arranged in a parallel array along the length direction of the groove (56) to form a continuous multi-segment constraint structure when pressing the tin bar (10).

4. The parallel resistance welding equipment according to claim 1, characterized in that: The interior of the material clamping plate (55) and the extension seat (54) is also provided with a positioning component (7) for clamping and transferring waste materials.

5. The parallel resistance welding equipment according to claim 4, characterized in that: The positioning assembly (7) includes a third movable groove (76) opened inside the bundle plate (55) and the extension seat (54) and connected to the groove (56), two movable blocks (74) slidably connected in the third movable groove (76), two clamping plates (75) located in the groove (56) and fixed to one side of the two movable blocks (74) respectively for clamping the solder bar (10), a bidirectional lead screw (72) rotatably connected in the third movable groove (76) and screwed in the two movable blocks (74), and a guide rod (73) fixed in the third movable groove (76). The two movable blocks (74) are movably sleeved on the outside of the guide rod (73). A motor (71) is fixed to one side of the outer surface of the extension seat (54), and the output shaft of the motor (71) is connected to the bidirectional lead screw (72).

6. The parallel resistance welding equipment according to claim 1, characterized in that: The upper end of the machine (1) is also symmetrically fixed with two material boxes for collecting solder bars (10). The two material boxes are located on both sides of the axial displacement part (4), and each material box is located between the corresponding first guide rail (52) and the axial displacement part (4).

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