A multi-station resistance welding mechanism and assembly line

Abstract

This application discloses a multi-station resistance welding mechanism and assembly line, relating to the technical field of welding. It includes two transport tracks for carrying workpieces to be processed and a drive assembly. The drive assembly includes two rotating guide pillars rotating in opposite directions. A first drive arm and a second drive arm are respectively connected to opposite sides of the two rotating guide pillars via rotating sleeves. A positive electrode mounting plate is installed at the end of the first drive arm, and a negative electrode mounting plate is installed at the end of the second drive arm. A positive electrode is mounted on the positive electrode mounting plate, and a negative electrode is mounted on the negative electrode mounting plate. When the drive assembly drives the two rotating guide pillars to rotate, the first and second drive arms reciprocate between the two transport tracks, simultaneously causing the positive and negative electrodes to move closer or further apart. This application enables simultaneous resistance welding of workpieces at multiple stations, greatly improving workpiece processing efficiency.

Description

Technical Field

[0001] This application relates to the technical field of resistance welding, specifically to a multi-station resistance welding mechanism and assembly line. Background Technology

[0002] Resistance welding is a welding method that uses resistance heat as its energy source. It is commonly used to weld metals, alloys, ceramics, and graphite. High-frequency current is applied to the surface of these materials, rapidly heating and melting them to form a strong weld. Pressure is constantly applied during the welding process, triggering the positive and negative electrodes of the current. The applied pressure is typically fed back by a pressure sensor. Once the applied pressure reaches a set value and remains constant, a certain current is applied for a fixed time. After welding, the positive and negative electrodes slowly move away from the workpiece and then quickly return to their original positions, thus completing one welding cycle.

[0003] In some related technologies, the soldering of small components on existing PCB boards often uses integrated resistance welding. However, traditional resistance welding is inefficient, and only one product can be soldered by combining the positive and negative electrodes at a time, resulting in high production costs. Summary of the Invention

[0004] To address at least one of the problems mentioned in the background art, this application provides a multi-station resistance welding mechanism and assembly line, which enables resistance welding of products at multiple stations simultaneously, greatly improving resistance welding efficiency.

[0005] The specific technical solutions provided in this application are as follows:

[0006] In a first aspect, a multi-station resistance welding mechanism is provided, comprising: at least two parallel transmission tracks and a device base plate disposed on one side of the transmission tracks, wherein a plurality of workpieces to be processed are carried on the transmission tracks;

[0007] A drive assembly is mounted on the base plate of the device. The drive assembly includes at least two rotating guide columns, which rotate in opposite directions.

[0008] The first drive arm and the second drive arm are respectively connected to opposite sides of two rotating guide pillars via rotating sleeves;

[0009] A positive electrode mounting plate is installed at the end of the first drive arm, and a negative electrode mounting plate is installed at the end of the second drive arm. At least one positive electrode is installed on the positive electrode mounting plate, and at least one negative electrode is installed on the negative electrode mounting plate.

[0010] When the driving component drives the two rotating guide pillars to rotate, the first driving arm and the second driving arm reciprocate between the two transmission tracks, and simultaneously drive the positive electrode and the negative electrode to move closer to each other or further away from each other.

[0011] In one specific embodiment, the drive assembly further includes a sliding groove formed on the device base plate, a drive block slidably connected in the sliding groove, and a power unit connected to the end of the drive block, the power unit being used to drive the drive block to reciprocate along the sliding groove;

[0012] A rack is fixedly connected to both sides of the drive block, and a gear is fixedly sleeved on the outside of the rotating guide post, the gear meshing with the rack;

[0013] A connecting plate is fixedly connected to the rotating guide post, and the end of the connecting plate away from the rotating guide post is rotatably connected to the first drive arm or the second drive arm through a rotating sleeve.

[0014] The first drive arm and the second drive arm are fixedly connected to a double clamping plate at one end near the drive block. The double clamping plate includes a first clamping plate and a second clamping plate fixedly connected to the end of the first drive arm or the second drive arm. A connecting shaft passes through the first clamping plate and the second clamping plate and passes through the rotating sleeve.

[0015] In one specific embodiment, the power unit includes at least one of the following: a DC servo motor, a stepper motor, an AC servo motor, a hydraulic motor, a hydraulic cylinder, a pneumatic motor, or a cylinder.

[0016] In one specific embodiment, the arrangement direction of the plurality of positive electrodes on the positive electrode mounting plate is parallel to the arrangement direction of the workpieces to be processed on the transfer track.

[0017] In one specific embodiment, the positive electrode is connected to the positive electrode of an external power supply system via a wire, and the negative electrode is connected to the negative electrode of an external power supply system via a wire.

[0018] In one specific embodiment, the positive electrode mounting plate and the negative electrode mounting plate are each provided with at least one mounting hole. The positive electrode is detached and mounted on the positive electrode mounting plate, and the negative electrode is detached and mounted on the negative electrode mounting plate, by means of a connector passing through the mounting hole.

[0019] In one specific embodiment, a drive shaft is threaded through two transmission tracks, and one end of the drive shaft extends out of the transmission track and is connected to the power system.

[0020] In one specific embodiment, at least two rotating guide posts are arranged on one side of the drive block, and at least two connecting shafts are provided on the first clamping plate and the second clamping plate. The rotating guide posts on the same side of the drive block are connected to the connecting shafts in a one-to-one correspondence.

[0021] In one specific embodiment, at least one sliding sleeve is installed on the edge of the base plate of the device, and a column beam is inserted through the sliding sleeve. The distance between the positive electrode and the negative electrode and the workpiece to be processed can be adjusted by the sliding sleeve sliding vertically along the column beam.

[0022] Secondly, an assembly line is provided, which includes the multi-station resistance welding mechanism described above.

[0023] The embodiments of this application have the following beneficial effects:

[0024] 1. The solution provided in this application embodiment drives two rotating guide pillars to rotate in opposite directions, thereby realizing that by one driving component, the two rotating guide pillars are simultaneously driven to transmit to opposite sides, that is, the first driving arm and the second driving arm are driven to extend or retract forward, so that the positive electrode and the negative electrode reciprocate between the products to be processed on the two transmission tracks, and at the same time, the positive electrode and the negative electrode are driven to weld the products to be processed when they are close to each other, and the positive electrode and the negative electrode are driven to move away from each other after they move away from each other.

[0025] 2. Multiple sliding sleeves are provided around the base plate of the equipment, and column beams pass through the sliding sleeves. This allows the sliding sleeves to slide vertically along the column beams, thereby adjusting the distance between the positive and negative electrodes and the workpiece to be processed. This enables the resistance welding mechanism in this application to adjust the sliding of the base plate of the equipment along the column beams according to the height of the workpiece to be processed on the transmission track, so that the positive and negative electrodes can weld the workpiece to be processed.

[0026] 3. By setting two rotating guide pillars on both sides of the drive block, power is simultaneously output through the two rotating guide pillars to drive the first drive arm and the second drive arm to reciprocate, thereby ensuring the stability of the reciprocating motion of the first drive arm and the second drive arm. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the overall structure of the multi-station resistance welding mechanism according to this application is shown.

[0029] Figure 2 A schematic diagram of the structure of the positive electrode and the negative electrode according to this application is shown;

[0030] Figure 3 Shown according to this application Figure 1 A magnified structural diagram of part A in the middle;

[0031] Figure 4 A schematic diagram showing the welding state of the multi-station resistance welding mechanism according to this application on the second transfer track;

[0032] In the diagram, 1. Transmission track; 2. Equipment base plate; 3. First drive arm; 4. Second drive arm; 5. Workpiece to be processed; 6. Transmission shaft; 7. Power system; 8. Drive assembly; 801. Fixed column; 802. Rotating guide column; 9. Positive electrode mounting plate; 10. Negative electrode mounting plate; 11. Positive electrode; 12. Negative electrode; 13. Sliding groove; 14. Drive block; 15. Drive connection joint; 16. Power unit; 17. Sliding block; 18. Rack; 19. Gear; 20. Connecting plate; 21. Double clamping plate; 2101. First clamping plate; 2102. Second clamping plate; 2103. Connecting shaft; 22. Mounting hole; 23. Sliding sleeve; 24. Column beam. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] In this application embodiment, "upper" and "lower" are both used in the sense of "upper" and "lower". Figure 1 and Figure 2 The orientation shown is the reference.

[0037] Example 1

[0038] A multi-station resistance welding mechanism, referring to Figure 1 and Figure 3 As shown, the device includes two transfer tracks 1, a base plate 2, a first drive arm 3, and a second drive arm 4. The two transfer tracks 1 are parallel and side-by-side. The base plate 2 is located on one side of the two transfer tracks 1. Several workpieces 5 to be processed are arranged on the transfer tracks 1, with the workpieces 5 evenly spaced. A drive shaft 6 passes through one end of each transfer track 1, and the same drive shaft 6 passes through both transfer tracks 1. One end of the drive shaft 6 extends out of the transfer track 1 and is connected to a power system 7. The power system 7 drives the drive shaft 6 to rotate, thereby driving the transfer tracks 1 to transport the workpieces to be processed. The workpieces 5 to be processed can be PCB workpieces, and this resistance welding mechanism solders small PCB parts onto the PCB workpieces.

[0039] Furthermore, such as Figure 2 and Figure 3 As shown, a drive assembly 8 is provided on the base plate 2 of the equipment. The drive assembly 8 includes a fixed column 801 and a rotatable rotating guide column 802 sleeved on the fixed column 801. The two rotating guide columns 802 rotate around the fixed column 801 in opposite directions. The first drive arm 3 and the second drive arm 4 are respectively connected to opposite sides of the two rotating guide columns 802 by rotating sleeves. A positive electrode mounting plate 9 is detachably installed on the end of the first drive arm 3 away from the rotating guide column 802, and a negative electrode mounting plate 10 is detachably installed on the end of the second drive arm 4 away from the rotating guide column 802. At least one positive electrode 11 is installed on the positive electrode mounting plate 9, and at least one negative electrode 12 is installed on the negative electrode mounting plate 10. When the drive assembly 8 drives the two rotating guide columns 802 to rotate in opposite directions, the first drive arm 3 and the second drive arm 4 reciprocate between the two transmission tracks, and simultaneously drive the positive electrode 11 and the negative electrode 12 to move closer to each other or further away from each other.

[0040] Furthermore, when the positive electrode 11 and the negative electrode 12 approach each other, they contact both sides of the workpiece 5 to be processed, so as to achieve welding of the workpiece 5 to be processed. When the positive electrode 11 and the negative electrode 12 move away from each other, the welding of the workpiece 5 to be processed is completed. After moving away from the welded workpiece 5 to be processed, they move to the upper part of another transfer track 1, and the positive electrode 11 and the negative electrode 12 move closer and further away from each other again to achieve welding of the workpiece 5 to be processed on the second transfer track 1.

[0041] In one specific embodiment, multiple positive electrodes 11 are evenly arranged along the length of the positive electrode mounting plate 9; specifically, four positive electrodes 11 are provided. Multiple negative electrodes 12 are evenly arranged along the length of the negative electrode mounting plate 10; specifically, four negative electrodes 12 are provided. The positive electrodes 11 and negative electrodes 12 are paired one-to-one to achieve welding of a workpiece 5 to be processed.

[0042] like Figure 3 As shown, in a specific embodiment, the drive assembly 8 further includes a dovetail-shaped sliding groove 13, a drive block 14, a drive connection 15, and a power unit 16. Specifically, the sliding groove 13 is formed on the equipment base plate 2, and a sliding block 17 is fixedly connected to the lower part of the drive block 14. The drive block 14 is slidably connected to the sliding groove 13 through the sliding block 17. One end of the drive block 14 is connected to the power unit 16 through the drive connection 15. The power unit 16 is used to drive the drive block 14 to slide back and forth along the sliding groove 13. Specifically, the drive block 14 slides along a direction perpendicular to the conveying direction of the product to be processed.

[0043] Furthermore, racks 18 are fixedly connected to both sides of the drive block 14, and gears 19 are fixedly sleeved on the outside of the rotating guide post 802. The gears 19 mesh with the racks 18. Connecting plates 20 are fixedly connected to the rotating guide post 802. One end of the connecting plate 20 away from the rotating guide post 802 is rotatably connected to the first drive arm 3 through a rotating sleeve, and the other end of the connecting plate 20 away from the rotating guide post 802 is rotatably connected to the second drive arm 4 through a rotating sleeve.

[0044] The first drive arm 3 and the second drive arm 4 are fixedly connected to the ends of the drive block 14 via a connector with double clamping plates 21. The double clamping plates 21 include a first clamping plate 2101 and a second clamping plate 2102. The first clamping plate 2101 and the second clamping plate 2102 are fixedly connected to the ends of the first drive arm 3 or the second drive arm 4, and a gap is reserved between the first clamping plate 2101 and the second clamping plate 2102 and they are arranged in parallel. A connecting shaft 2103 passes through the first clamping plate 2101 and the second clamping plate 2102. The connecting shaft 2103 passes vertically through the first clamping plate 2101 and the second clamping plate 2102 and is inserted into the rotating shaft, thereby realizing the transmission connection between the rotating guide post 802 and the first drive arm 3 and the second drive arm 4. When the power unit 16 drives the drive block 14 to slide along the sliding groove 13, the racks 18 on both sides of the drive block 14 mesh with the gears 19, thereby driving the rotating guide posts 802 on both sides to rotate in opposite directions.

[0045] Furthermore, two rotating guide posts 802 are arranged on one side of the drive block 14, and the rotating guide posts 802 on both sides of the drive block 14 are symmetrically arranged. Two connecting shafts 2103 are provided on the first clamping plate 2101 and the second clamping plate 2102. The rotating guide posts 802 on the same side of the drive block 14 are connected to the connecting shafts 2103 in a one-to-one correspondence. Power is output simultaneously through the two rotating guide posts 802 to drive the first drive arm 3 and the second drive arm 4 to reciprocate, so as to ensure the stability of the reciprocating motion of the first drive arm 3 and the second drive arm 4.

[0046] In one specific embodiment, the power unit 16 includes, but is not limited to, one of a DC servo motor, a stepper motor, an AC servo motor, a hydraulic motor, a hydraulic cylinder, a pneumatic motor, or a cylinder. Preferably, the power unit 16 is a cylinder.

[0047] like Figure 4 As shown, in a specific embodiment, the arrangement direction of several positive electrodes 11 on the positive electrode mounting plate 9 is parallel to the arrangement direction of the workpiece 5 to be processed on the transfer track 1, while the arrangement direction of several negative electrodes 12 on the negative electrode mounting plate 10 is parallel to the arrangement direction of the workpiece 5 to be processed on the transfer track 1. The positive electrodes 11 on the positive electrode mounting plate 9 are connected to the positive electrodes 11 of an external power supply system via wires, and the negative electrodes 12 on the negative electrode mounting plate 10 are connected to the negative electrodes 12 of an external power supply system via wires, so as to realize welding when the positive electrodes 11 and negative electrodes 12 come close to each other and contact the workpiece 5 to be processed.

[0048] In one specific embodiment, the positive electrode mounting plate 9 and the negative electrode mounting plate 10 are respectively provided with a plurality of mounting holes 22, the mounting holes 22 corresponding to the positions of the positive electrode 11 or the negative electrode 12. The positive electrode 11 is detached and installed on the positive electrode mounting plate 9, and the negative electrode 12 is detached and installed on the negative electrode mounting plate 10, by means of a connector passing through the mounting holes 22, thereby facilitating the maintenance or replacement of the positive electrode 11 and the negative electrode 12.

[0049] like Figure 1 As shown, protruding plates are fixedly connected around the four sides of the equipment base plate 2. Sliding sleeves 23 are installed at the four protruding plate positions respectively. Column beams 24 slide through the sliding sleeves 23. The column beams 24 are vertically arranged at the lower part of the equipment base plate 2. This allows the sliding sleeves 23 to slide vertically along the column beams 24, thereby adjusting the distance between the positive electrode 11 and the negative electrode 12 and the workpiece 5 to be processed. This enables the resistance welding mechanism in this application to adjust the sliding of the equipment base plate 2 along the column beams 24 according to the height of the workpieces 5 of different specifications on the transmission track 1, so that the positive electrode 11 and the negative electrode 12 can weld the workpiece 5 to be processed.

[0050] like Figure 1 and Figure 2 As shown, in a specific embodiment, the speed at which the transmission track 1 conveys the workpiece 5 to be processed is adjusted according to the reciprocating distance of the first drive arm 3 and the second drive arm 4 driven by the rotating guide post 802. This is so that when the rack 18 moves towards the transmission track 1, the gear 19 drives the first drive arm 3 and the second drive arm 4 to move away from the transmission track 1, at which time the workpiece 5 to be processed on the outer transmission track 1 is welded; then when the rack 18 moves away from the transmission track 1, the gear 19 drives the first drive arm 3 and the second drive arm 4 to move towards the transmission track 1, at which time the workpiece 5 to be processed on the inner transmission track is welded, thereby realizing the staggered welding of the workpieces 5 to be processed on the two transmission tracks 1.

[0051] Furthermore, the first drive arm 3 and the second drive arm 4 are configured as a stepped type, that is, the first drive arm 3 and the second drive arm 4 include a first connecting arm, a second connecting arm and a third connecting arm sequentially connected to the ends of the double clamping plates 21. The first and third connecting arms are vertically and parallel. One end of the second connecting arm is fixedly connected to the first connecting arm, and the other end is fixedly connected to the third connecting arm. A telescopic arm is connected to the lower part of the third connecting arm. The positive electrode mounting plate 9 and the negative electrode mounting plate 10 are detachably mounted on the end of the telescopic arm away from the third connecting arm. By setting the telescopic arm, the distance between the positive electrode 11 and the negative electrode 12 and the workpiece 5 to be processed can be compensated and adjusted, thereby ensuring that the resistance welding mechanism is suitable for welding workpieces 5 of different specifications and sizes.

[0052] The disassembly and installation in this embodiment includes, but is not limited to, disassembly and installation using connectors, wherein the connectors include, but are not limited to, screws, bolts, or bolts.

[0053] In one specific embodiment, the power system 7 includes, but is not limited to, an electric motor.

[0054] Specific implementation process: In the initial state, the equipment base plate 2 is first adjusted to slide along the column beam 24 according to the height of the workpiece 5 to be processed on the transmission track 1, so as to ensure that the positive electrode 11 and the negative electrode 12 can weld the workpiece 5 to be processed when they are in contact with it. The power unit 16 drives the drive block 14 to slide along the sliding groove 13. Under the meshing action of the gear 19 and the rack 18, the rotating guide column 802 rotates in opposite directions, driving the first drive arm 3 and the second drive arm 4 to move back and forth. When the rack 18 moves towards the transmission track 1, the gear 19 will drive the first drive arm 3 and the second drive arm 4 to move away from the transmission track 1. At this time, the workpiece 5 to be processed on the external transmission track 1 is welded. Then, when the rack 18 moves away from the transmission track 1, the gear 19 will drive the first drive arm 3 and the second drive arm 4 to move towards the transmission track 1. At this time, the workpiece 5 to be processed on the internal transmission track is welded. Thus, the workpieces 5 to be processed on the two transmission tracks 1 are welded alternately.

[0055] In this embodiment, four positive electrodes 11 and four negative electrodes 12 are provided, thereby enabling four sets of resistance welding processes to be carried out simultaneously. In addition, the double-row transmission rails simultaneously transport the workpiece 5 to be processed. When the power unit 16 drives the drive block 14 to extend and retract, staggered welding of eight stations can be achieved, which greatly improves the welding efficiency.

[0056] Example 2

[0057] Corresponding to the above embodiments, this application provides an assembly line, which includes the multi-station resistance welding mechanism described above.

[0058] In one specific embodiment, the multi-station resistance welding mechanism includes two transfer tracks 1, a base plate 2, a first drive arm 3, and a second drive arm 4. The two transfer tracks 1 are parallel and side-by-side. The base plate 2 is located on one side of the two transfer tracks 1. A plurality of workpieces 5 to be processed are arranged on the transfer tracks 1, with the workpieces 5 evenly spaced. A drive shaft 6 passes through one end of each transfer track 1, and the same drive shaft 6 passes through both transfer tracks 1. One end of the drive shaft 6 extending out of the transfer track 1 is connected to a power system 7. The power system 7 drives the drive shaft 6 to rotate, thereby driving the transfer tracks 1 to transport the workpieces to be processed. The workpieces 5 to be processed can be PCB workpieces, and this resistance welding mechanism welds small PCB components onto the PCB workpieces.

[0059] Furthermore, such as Figure 2 and Figure 3As shown, a drive assembly 8 is provided on the base plate 2 of the equipment. The drive assembly 8 includes a fixed column 801 and a rotatable rotating guide column 802 sleeved on the fixed column 801. The two rotating guide columns 802 rotate around the fixed column 801 in opposite directions. The first drive arm 3 and the second drive arm 4 are respectively connected to opposite sides of the two rotating guide columns 802 by rotating sleeves. A positive electrode mounting plate 9 is detachably installed on the end of the first drive arm 3 away from the rotating guide column 802, and a negative electrode mounting plate 10 is detachably installed on the end of the second drive arm 4 away from the rotating guide column 802. At least one positive electrode 11 is installed on the positive electrode mounting plate 9, and at least one negative electrode 12 is installed on the negative electrode mounting plate 10. When the drive assembly 8 drives the two rotating guide columns 802 to rotate in opposite directions, the first drive arm 3 and the second drive arm 4 reciprocate between the two transmission tracks, and simultaneously drive the positive electrode 11 and the negative electrode 12 to move closer to each other or further away from each other.

[0060] Furthermore, when the positive electrode 11 and the negative electrode 12 approach each other, they contact both sides of the workpiece 5 to be processed, so as to achieve welding of the workpiece 5 to be processed. When the positive electrode 11 and the negative electrode 12 move away from each other, the welding of the workpiece 5 to be processed is completed. After moving away from the welded workpiece 5 to be processed, they move to the upper part of another transfer track 1, and the positive electrode 11 and the negative electrode 12 move closer and further away from each other again to achieve welding of the workpiece 5 to be processed on the second transfer track 1.

[0061] In one specific embodiment, multiple positive electrodes 11 are evenly arranged along the length of the positive electrode mounting plate 9; specifically, four positive electrodes 11 are provided. Multiple negative electrodes 12 are evenly arranged along the length of the negative electrode mounting plate 10; specifically, four negative electrodes 12 are provided. The positive electrodes 11 and negative electrodes 12 are paired one-to-one to achieve welding of a workpiece 5 to be processed.

[0062] like Figure 3 As shown, in a specific embodiment, the drive assembly 8 further includes a dovetail-shaped sliding groove 13, a drive block 14, a drive connection 15, and a power unit 16. Specifically, the sliding groove 13 is formed on the equipment base plate 2, and a sliding block 17 is fixedly connected to the lower part of the drive block 14. The drive block 14 is slidably connected to the sliding groove 13 through the sliding block 17. One end of the drive block 14 is connected to the power unit 16 through the drive connection 15. The power unit 16 is used to drive the drive block 14 to slide back and forth along the sliding groove 13. Specifically, the drive block 14 slides along a direction perpendicular to the conveying direction of the product to be processed.

[0063] Furthermore, racks 18 are fixedly connected to both sides of the drive block 14, and gears 19 are fixedly sleeved on the outside of the rotating guide post 802. The gears 19 mesh with the racks 18. Connecting plates 20 are fixedly connected to the rotating guide post 802. One end of the connecting plate 20 away from the rotating guide post 802 is rotatably connected to the first drive arm 3 through a rotating sleeve, and the other end of the connecting plate 20 away from the rotating guide post 802 is rotatably connected to the second drive arm 4 through a rotating sleeve.

[0064] The first drive arm 3 and the second drive arm 4 are fixedly connected to the ends of the drive block 14 via a connector with double clamping plates 21. The double clamping plates 21 include a first clamping plate 2101 and a second clamping plate 2102. The first clamping plate 2101 and the second clamping plate 2102 are fixedly connected to the ends of the first drive arm 3 or the second drive arm 4, and a gap is reserved between the first clamping plate 2101 and the second clamping plate 2102 and they are arranged in parallel. A connecting shaft 2103 passes through the first clamping plate 2101 and the second clamping plate 2102. The connecting shaft 2103 passes vertically through the first clamping plate 2101 and the second clamping plate 2102 and is inserted into the rotating shaft, thereby realizing the transmission connection between the rotating guide post 802 and the first drive arm 3 and the second drive arm 4. When the power unit 16 drives the drive block 14 to slide along the sliding groove 13, the racks 18 on both sides of the drive block 14 mesh with the gears 19, thereby driving the rotating guide posts 802 on both sides to rotate in opposite directions.

[0065] Furthermore, two rotating guide posts 802 are arranged on one side of the drive block 14, and the rotating guide posts 802 on both sides of the drive block 14 are symmetrically arranged. Two connecting shafts 2103 are provided on the first clamping plate 2101 and the second clamping plate 2102. The rotating guide posts 802 on the same side of the drive block 14 are connected to the connecting shafts 2103 in a one-to-one correspondence. Power is output simultaneously through the two rotating guide posts 802 to drive the first drive arm 3 and the second drive arm 4 to reciprocate, so as to ensure the stability of the reciprocating motion of the first drive arm 3 and the second drive arm 4.

[0066] In one specific embodiment, the power unit 16 includes, but is not limited to, one of a DC servo motor, a stepper motor, an AC servo motor, a hydraulic motor, a hydraulic cylinder, a pneumatic motor, or a cylinder. Preferably, the power unit 16 is a cylinder.

[0067] like Figure 4As shown, in a specific embodiment, the arrangement direction of several positive electrodes 11 on the positive electrode mounting plate 9 is parallel to the arrangement direction of the workpiece 5 to be processed on the transfer track 1, while the arrangement direction of several negative electrodes 12 on the negative electrode mounting plate 10 is parallel to the arrangement direction of the workpiece 5 to be processed on the transfer track 1. The positive electrodes 11 on the positive electrode mounting plate 9 are connected to the positive electrodes 11 of an external power supply system via wires, and the negative electrodes 12 on the negative electrode mounting plate 10 are connected to the negative electrodes 12 of an external power supply system via wires, so as to realize welding when the positive electrodes 11 and negative electrodes 12 come close to each other and contact the workpiece 5 to be processed.

[0068] In one specific embodiment, the positive electrode mounting plate 9 and the negative electrode mounting plate 10 are respectively provided with a plurality of mounting holes 22, the mounting holes 22 corresponding to the positions of the positive electrode 11 or the negative electrode 12. The positive electrode 11 is detached and installed on the positive electrode mounting plate 9, and the negative electrode 12 is detached and installed on the negative electrode mounting plate 10, by means of a connector passing through the mounting holes 22, thereby facilitating the maintenance or replacement of the positive electrode 11 and the negative electrode 12.

[0069] like Figure 1 As shown, protruding plates are fixedly connected around the four sides of the equipment base plate 2. Sliding sleeves 23 are installed at the four protruding plate positions respectively. Column beams 24 slide through the sliding sleeves 23. The column beams 24 are vertically arranged at the lower part of the equipment base plate 2. This allows the sliding sleeves 23 to slide vertically along the column beams 24, thereby adjusting the distance between the positive electrode 11 and the negative electrode 12 and the workpiece 5 to be processed. This enables the resistance welding mechanism in this application to adjust the sliding of the equipment base plate 2 along the column beams 24 according to the height of the workpieces 5 of different specifications on the transmission track 1, so that the positive electrode 11 and the negative electrode 12 can weld the workpiece 5 to be processed.

[0070] like Figure 1 and Figure 2 As shown, in a specific embodiment, the speed at which the transmission track 1 conveys the workpiece 5 to be processed is adjusted according to the reciprocating distance of the first drive arm 3 and the second drive arm 4 driven by the rotating guide post 802. This is so that when the rack 18 moves towards the transmission track 1, the gear 19 drives the first drive arm 3 and the second drive arm 4 to move away from the transmission track 1, at which time the workpiece 5 to be processed on the outer transmission track 1 is welded; then when the rack 18 moves away from the transmission track 1, the gear 19 drives the first drive arm 3 and the second drive arm 4 to move towards the transmission track 1, at which time the workpiece 5 to be processed on the inner transmission track is welded, thereby realizing the staggered welding of the workpieces 5 to be processed on the two transmission tracks 1.

[0071] Furthermore, the first drive arm 3 and the second drive arm 4 are configured as a stepped type, that is, the first drive arm 3 and the second drive arm 4 include a first connecting arm, a second connecting arm and a third connecting arm sequentially connected to the ends of the double clamping plates 21. The first and third connecting arms are vertically and parallel. One end of the second connecting arm is fixedly connected to the first connecting arm, and the other end is fixedly connected to the third connecting arm. A telescopic arm is connected to the lower part of the third connecting arm. The positive electrode mounting plate 9 and the negative electrode mounting plate 10 are detachably mounted on the end of the telescopic arm away from the third connecting arm. By setting the telescopic arm, the distance between the positive electrode 11 and the negative electrode 12 and the workpiece 5 to be processed can be compensated and adjusted, thereby ensuring that the resistance welding mechanism is suitable for welding workpieces 5 of different specifications and sizes.

[0072] The disassembly and installation in this embodiment includes, but is not limited to, disassembly and installation using connectors, wherein the connectors include, but are not limited to, screws, bolts, or bolts.

[0073] In one specific embodiment, the power system 7 includes, but is not limited to, an electric motor.

[0074] In this embodiment, the equipment base plate 2 first slides along the column beam 24 according to the height of the workpiece 5 to be processed on the transmission track 1, so as to ensure that the positive electrode 11 and the negative electrode 12 can weld the workpiece 5 to be processed when they are in contact. The power unit 16 drives the drive block 14 to slide along the sliding groove 13. Under the meshing action of the gear 19 and the rack 18, the rotating guide column 802 rotates in opposite directions, driving the first drive arm 3 and the second drive arm 4 to move back and forth. When the rack 18 moves towards the transmission track 1, the gear 19 will drive the first drive arm 3 and the second drive arm 4 to move away from the transmission track 1. At this time, the workpiece 5 to be processed on the external transmission track 1 is welded. Then, when the rack 18 moves away from the transmission track 1, the gear 19 will drive the first drive arm 3 and the second drive arm 4 to move towards the transmission track 1. At this time, the workpiece 5 to be processed on the internal transmission track is welded. Thus, the workpieces 5 to be processed on the two transmission tracks 1 are welded alternately.

[0075] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-station resistance welding mechanism, characterized in that, include: At least two parallel transmission tracks (1) and a device base plate (2) disposed on one side of the transmission tracks (1), wherein a plurality of workpieces (5) to be processed are carried on the transmission tracks (1); A drive assembly (8) is installed on the base plate (2) of the equipment. The drive assembly (8) includes at least two rotating guide posts (802) that rotate in opposite directions. The first drive arm (3) and the second drive arm (4) are respectively connected to opposite sides of two rotating guide pillars (802) by rotating sleeves; The drive assembly (8) further includes a sliding groove (13) on the equipment base plate (2), a drive block (14) slidably connected in the sliding groove (13), and a power unit (16) connected to the end of the drive block (14). The power unit (16) is used to drive the drive block (14) to slide back and forth along the sliding groove (13). A rack (18) is fixedly connected to both sides of the drive block (14). A gear (19) is fixedly sleeved on the outside of the rotating guide post (802). The gear (19) meshes with the rack (18). A connecting plate (20) is fixedly connected to the rotating guide post (802). The end of the connecting plate (20) away from the rotating guide post (802) is rotatably connected to the first drive arm (3) or the second drive arm (4) through a rotating sleeve. A positive electrode mounting plate (9) is installed at the end of the first drive arm (3), and a negative electrode mounting plate (10) is installed at the end of the second drive arm (4). At least one positive electrode (11) is installed on the positive electrode mounting plate (9), and at least one negative electrode (12) is installed on the negative electrode mounting plate (10). The arrangement direction of the plurality of positive electrodes (11) on the positive electrode mounting plate (9) is parallel to the arrangement direction of the workpiece (5) to be processed on the transmission track (1). When the driving assembly (8) drives the two rotating guide posts (802) to rotate, the first driving arm (3) and the second driving arm (4) reciprocate between the two transmission tracks (1), and simultaneously drive the positive electrode (11) and the negative electrode (12) to move closer to or further away from each other.

2. The multi-station resistance welding mechanism according to claim 1, characterized in that, The first drive arm (3) and the second drive arm (4) are fixedly connected to a double clamping plate (21) at one end near the drive block (14). The double clamping plate (21) includes a first clamping plate (2101) and a second clamping plate (2102) fixedly connected to the end of the first drive arm (3) or the second drive arm (4). A connecting shaft (2103) passes through the first clamping plate (2101) and the second clamping plate (2102), and the connecting shaft (2103) passes through the rotating sleeve.

3. The multi-station resistance welding mechanism according to claim 2, characterized in that, The power unit (16) includes at least one of the following: DC servo motor, stepper motor, AC servo motor, hydraulic motor, hydraulic cylinder, pneumatic motor, or cylinder.

4. The multi-station resistance welding mechanism according to claim 1, characterized in that, The positive electrode (11) is connected to the positive electrode (11) of the external power supply system through a wire, and the negative electrode (12) is connected to the negative electrode (12) of the external power supply system through a wire.

5. The multi-station resistance welding mechanism according to claim 1 or 2, characterized in that, At least one mounting hole (22) is provided on the positive electrode mounting plate (9) and the negative electrode mounting plate (10). The positive electrode (11) is detached and installed on the positive electrode mounting plate (9) and the negative electrode (12) is detached and installed on the negative electrode mounting plate (10) by means of a connector passing through the mounting hole (22).

6. The multi-station resistance welding mechanism according to claim 5, characterized in that, A drive shaft (6) is inserted through the two transmission tracks (1), and the drive shaft (6) extends out of one end of the transmission track (1) and is connected to the power system (7).

7. The multi-station resistance welding mechanism according to claim 2, characterized in that, At least two of the rotating guide posts (802) are arranged on one side of the drive block (14), and at least two connecting shafts (2103) are provided on the first clamping plate (2101) and the second clamping plate (2102). The rotating guide posts (802) on the same side of the drive block (14) are connected to the connecting shafts (2103) in a one-to-one correspondence.

8. The multi-station resistance welding mechanism according to claim 1 or 2, characterized in that, At least one sliding sleeve (23) is installed on the upper edge of the base plate (2) of the equipment. A column beam (24) is inserted through the sliding sleeve (23). The distance between the positive electrode (11) and the negative electrode (12) and the workpiece (5) to be processed can be adjusted by the sliding sleeve (23) sliding vertically along the column beam (24).

9. An assembly production line, characterized in that, The assembly line includes a multi-station resistance welding mechanism as described in any one of claims 1 to 8.

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