Welding fixture and welding equipment

Abstract

The invention belongs to the technical field of clamps, and discloses a welding clamp and welding equipment. The welding clamp comprises a clamp body, a supporting base, a pressing claw and a clamping and fixing assembly. The clamp body is provided with a clamping station. The supporting seat is fixedly connected to the clamp main body and is provided with a clamping part; the clamping assembly comprises a movable buckle, a transmission shaft and a first elastic fastener, the movable buckle is pivotally connected to the supporting seat through the transmission shaft and is in transmission connection with the pressing claw through the transmission shaft, the movable buckle can be clamped with the clamping part, and the first elastic fastener is arranged between the supporting seat and the pressing claw. When the movable buckle is clamped to the clamping part, the movable buckle can drive the transmission shaft, the pressing claw and the supporting base to be kept in a relatively static state, meanwhile, the first elastic fastener can drive the pressing claw to be stopped at the pressing position, and at the pressing position, the pressing claw can press the part to be welded to the clamping station. By means of the arrangement, the pressing claws can be limited by the first elastic fastener and the transmission shaft at the same time, and the pressing effect and reliability of the pressing claws on the to-be-welded part are improved.

Description

Technical Field

[0001] The invention relates to the field of clamps, and in particular to a welding clamp and welding equipment. Background Art

[0002] In industries such as consumer electronics, automotive electronics, and new energy batteries, PCB boards need to be soldered with contact conductive sheets to achieve circuit connection. Since the contact conductive sheets are small in size and have high requirements for the position and number of solder joints, precise and reliable fixtures are required to clamp and fix the conductive sheets.

[0003] At present, in traditional automatic welding machines, welding fixtures often use magnet clamping, with magnets set between the clamping claws and the support seat, and clamping is performed by magnet suction. However, in actual use of this solution, dust or burrs will be adsorbed on the magnet, causing the distance between the clamping claws and the support seat to increase and the clamping force to decrease. At this time, it is impossible to clearly monitor whether the clamping is tight, resulting in the inability to effectively clamp the contact conductive sheet during clamping or welding, resulting in deviation.

[0004] The existing related technology provides a welding fixture, in which the clamping mechanism mainly includes a pressure claw and an elastic element. The pressure claw can press the element to be welded onto the fixture body, and the elastic element is connected to the pressure claw to drive the pressure claw to always rotate toward the element to be welded. By replacing the magnet clamping with an elastic element to provide an elastic preload for the pressure claw, the influence of dust or burrs can be eliminated, and the clamping reliability of the welding fixture is increased to a certain extent. However, due to the influence of the durability and stability of the elastic element, the above-mentioned improvement measures may reduce the performance of the elastic element after long-term use, resulting in insufficient preload, and thus still cannot meet the long-term clamping stability requirements. Summary of the invention

[0005] The first object of the present invention is to provide a welding fixture that can ensure that the workpiece to be welded is effectively clamped during the clamping or welding process, avoid deviation, improve welding quality, and at the same time have higher durability, stability and reliability.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The welding fixture comprises: a fixture body, on which a clamping station for placing a workpiece to be welded is provided; a support seat, which is fixedly connected to the fixture body and has a clamping portion on the support seat; a pressure claw, which is used to press the workpiece to be welded onto the clamping station; a clamping assembly, which comprises an active buckle, a transmission shaft and a first elastic fastener, wherein the active buckle is pivotally connected to the support seat through the transmission shaft, and is connected to the pressure claw through the transmission shaft, and the active buckle can be rotated to be clamped with the clamping portion, the first elastic fastener is arranged between the support seat and the pressure claw, and when the active buckle is clamped with the clamping portion, the active buckle can drive the transmission shaft and the pressure claw to remain in a relatively static state at the support seat, and the first elastic fastener is configured to drive the pressure claw to stop at a clamping position, and at the clamping position, the pressure claw can press the workpiece to be welded onto the clamping station.

[0008] Preferably, the fastening assembly further comprises a second elastic fastener, two ends of which are respectively connected to the support seat and the movable buckle, and the second elastic fastener is configured to drive the movable buckle to stop and clamp to the clamping portion.

[0009] Preferably, the support seat includes a fixed support, a transfer shaft and a movable support, the fixed support is fixedly connected to the clamp body and is provided with the clamping portion, the movable support is pivotally connected to the fixed support through the transfer shaft, and is pivotally connected to the movable buckle and the pressure claw through the transmission shaft.

[0010] Preferably, the pressing claw has a long strip structure, and one end of the pressing claw is used to press the workpiece to be welded, the adapter shaft is simultaneously passed through the other end of the pressing claw, the fixed support and the movable support, and the movable buckle is connected to the middle part of the pressing claw through the transmission shaft.

[0011] Preferably, a plurality of limit installation grooves are arranged at intervals along the same row on the fixed support, and a pressure claw is inserted in each of the limit installation grooves, and the adapter shaft is simultaneously passed through the plurality of limit installation grooves, the pressure claws, the fixed support and the movable support.

[0012] Preferably, the fastening assembly further comprises a closing handle, wherein the closing handle is fixedly connected to the top of the fixed support, and the closing handle and the movable buckle are spaced apart to form an escape space for the movable buckle to rotate.

[0013] Preferably, the fastening assembly further comprises a connecting member, both ends of the connecting member are respectively connected to one of the movable buckles, and both ends of the fixed support are respectively provided with a clamping portion corresponding to the movable buckle.

[0014] Preferably, a plurality of stop blocks are spaced apart on the fixture body along the circumference of the clamping station, and the plurality of stop blocks are together enclosed to clamp the workpiece to be welded on the clamping station.

[0015] Preferably, the clamping station is provided with a product positioning pin, and the product positioning pin is arranged corresponding to the positioning hole on the part to be welded.

[0016] The welding fixture provided by the present invention has the following beneficial effects: when the movable buckle is clamped to the clamping part, the first elastic fastener is in a compressed state, and the first elastic fastener can drive the pressure claw to always move in the direction of clamping the workpiece to be welded. At this time, the movable buckle can also drive the transmission shaft and the pressure claw to maintain a relatively static state with the support seat. At this time, the pressure claw will be subjected to the dual pressure of the relatively fixed transmission shaft and the first elastic fastener in a compressed state, thereby effectively improving the clamping effect and stability of the pressure claw on the workpiece to be welded. When the performance of the first elastic fastener is reduced due to long-term use, the pressure claw can still be fixed and limited by the transmission shaft, so that the workpiece to be welded is still in a clamped state during welding, avoiding deviation, tilting and other conditions, ensuring the welding quality, and improving the reliability, durability and stability of the welding fixture.

[0017] A second object of the present invention is to provide a welding device that can improve the clamping stability of the welded parts during welding, thereby improving the reliability of use and the welding quality.

[0018] To achieve this object, the present invention adopts the following technical solutions:

[0019] The welding equipment comprises a workbench, a manipulator automatic loader and the above-mentioned welding fixture, wherein the workbench is provided with a supporting platform for fixing and placing the welding fixture, and the manipulator automatic loader is used to transfer the workpiece to be welded to the welding fixture.

[0020] The welding equipment provided by the present invention has the beneficial effects that when the welding equipment is in use, when the movable buckle is clamped to the clamping part, the relative static fixation between the transmission shaft and the pressure claw and the support seat can be achieved, and under the constraint, the pressure claw can maintain the clamping state of the workpiece to be welded. In addition, when the movable buckle is clamped to the clamping part, the first elastic fastener is in a compressed state at this time, so that the pressure claw can be applied to the workpiece to be welded. The pressure is moved toward the workpiece to be welded, so that the pressure claw can always apply a pressure to the workpiece to be welded. Under the dual pressure of the transmission shaft and the first elastic fastener, the clamping effect of the pressure claw on the workpiece to be welded can be greatly improved, and the installation stability of the workpiece to be welded during the welding process is guaranteed. In addition, when the elastic performance of the first elastic fastener decreases after long-term use, the pressure claw can continue to apply a clamping force to the pressure claw through the transmission shaft, so as not to affect the performance of the pressure claw on the workpiece to be welded, so that the workpiece to be welded is still in a clamped state during welding, avoiding the conditions of deviation, tilting, etc., and ensuring the welding quality. Therefore, the use stability and reliability of the welding equipment are effectively improved, and the welding quality is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural schematic diagram of a welding fixture provided in Embodiment 1 of the present invention;

[0022] Figure 2 is a schematic structural diagram of a workpiece to be welded provided in Embodiment 1 of the present invention;

[0023] Figure 3 is an assembly diagram of a welding fixture and a workpiece to be welded provided in the first embodiment of the present invention;

[0024] Figure 4 is a schematic diagram of the connection between the support base and the fixing assembly provided in the first embodiment of the present invention at a first viewing angle;

[0025] Figure 5 This is a first-perspective exploded view of the support base and the fixing assembly provided in the first embodiment of the present invention after being assembled;

[0026] Figure 6 is an exploded view from a second perspective of the support base and the fixing assembly provided in the first embodiment of the present invention after being assembled;

[0027] Figure 7 is a schematic diagram of the connection between the support base and the fixing assembly provided in the first embodiment of the present invention at a second viewing angle;

[0028] Figure 8 is a top view of the connection between the support base and the fixing assembly provided in the first embodiment of the present invention;

[0029] Fig. 9 is along Figure 8 Cross-sectional view after middle AA;

[0030] Fig.10 is along Figure 8 Cross-sectional view after the middle BB;

[0031] Fig.11 is a schematic structural diagram of a fastening assembly provided in Embodiment 1 of the present invention;

[0032] Fig.12 It is a structural schematic diagram of the welding equipment provided in the second embodiment of the present invention.

[0033] In the figure:

[0034] 100, parts to be welded; 110, PCB board; 1101, slot body; 120, contact conductive sheet; 200, workbench; 210, support platform; 300, robot automatic loading machine;

[0035] 1. Fixture body; 101. Clamping station; 11. Square groove; 12. Stop block; 13. Product positioning pin; 14. Guide sleeve;

[0036] 2. Support seat; 21. Fixed support; 2101. Clamping part; 211. Rib plate; 212. Position limiting installation groove; 213. First assembly through hole; 22. Adapter shaft; 23. Movable support; 231. Avoidance notch; 232. First assembly through hole; 24. Buckle pressure plate; 25. Shaft stopper;

[0037] 3. Fastening assembly; 31. Active buckle; 32. Transmission shaft; 33. First elastic fastener; 34. Connector; 35. Second elastic fastener; 36. Closing handle; 361. Second assembly through hole;

[0038] 4. Pressing claw; 41. First adapter sleeve hole; 42. Second adapter sleeve hole;

[0039] 5. Handle. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] The technical solution provided by the present invention is described below in conjunction with the accompanying drawings and specific embodiments.

[0045] Embodiment 1

[0046] The present embodiment provides a welding fixture, including a fixture body 1, a support seat 2, a clamping assembly 3 and a pressure claw 4. The fixture body 1 is provided with a clamping station 101 for placing a workpiece 100 to be welded, the support seat 2 is fixedly arranged on the fixture body 1, the clamping assembly 3 is pivotally connected to the support seat 2, and the clamping assembly 3 is transmission-connected to the pressure claw 4, and under the driving force of the clamping assembly 3, the pressure claw 4 can rotate in a direction close to or away from the clamping station 101. Moreover, when the pressure claw 4 is pressed against the surface of the workpiece 100 to be welded located in the clamping station 101, the clamping assembly 3 can be clamped on the support seat 2, so that the pressure claw 4 can stably press the workpiece 100 to be welded to prevent the workpiece 100 to be welded from moving, thereby ensuring the welding accuracy of the workpiece 100 to be welded.

[0047] refer to Figure 1As shown, the fixture body 1 is a square flat plate, and a square groove 11 is arranged on the plate surface. A clamping station 101 is formed in the square groove 11 to facilitate the placement of a workpiece 100 to be welded with a square cross-section shape.

[0048] Combination Figure 2 , Figure 3 As shown, one implementation of this embodiment is that the workpiece 100 to be welded includes a PCB board 110 and a contact conductive sheet 120, wherein the PCB board 110 is fixedly placed in a clamping station 101, and a positioning slot 1101 for limiting the placement of the contact conductive sheet 120 is provided on the PCB board 110. After the contact conductive sheet 120 is limitedly placed in the positioning slot 1101, the pressing component 3 can press the contact conductive sheet 120 in the positioning slot 1101, and select a pressing claw 31 of a suitable size according to actual conditions to avoid the welding area on the contact conductive sheet 120, and then use a welding device to weld the contact conductive sheet 120 on the PCB board 110 to achieve electrical connection between the contact conductive sheet 120 and the PCB board 110. Preferably, there are four contact conductive sheets 120 and four positioning slots 1101 correspondingly.

[0049] Optionally, refer to Figure 3 As shown, a plurality of stop blocks 12 are also arranged at intervals on the fixture body 1 along the circumferential direction of the clamping station 101. In one embodiment, the horizontal cross-section of the clamping station 101 is rectangular, and a stop block 12 is arranged on each of the two sides with shorter side dimensions, two stop blocks 12 are arranged on one side with longer side dimensions, and a stop block 12 and a support seat 2 are arranged on the other side with longer side dimensions. After the PCB board 110 is installed in the clamping station 101, the PCB board 110 can be clamped between the four stop blocks 12 by four stop blocks 12 to prevent the PCB board 110 from rotating in the circumferential direction and moving in the vertical direction, thereby ensuring the installation stability of the contact conductive sheet 120 on the PCB board 110.

[0050] Specifically, a waist-shaped hole is penetrated on the stop block 12, and a threaded hole is penetrated on the fixture body 1. The stop block 12 is connected to the fixture body 1 through a threaded fastener, so that the stop block 12 can be adjusted according to the actual size of the PCB board 110 placed on the clamping station 101, so that the fixture body 1 can process PCB boards 110 of various sizes, thereby improving the flexibility of use of the welding fixture and ensuring that the PCB board 110 can be stably placed on the fixture body 1 through the stop block 12.

[0051] Optionally, a product positioning pin 13 is fixedly inserted inside the square groove 11, and the product positioning pin 13 can match the positioning hole 1102 on the PCB board 110 to pre-position the PCB board 110. After the PCB board 110 is installed on the clamping station 101 through the product positioning pin 13, the PCB board 110 is clamped by four stop blocks 12, thereby further improving the clamping accuracy of the PCB board 110. Preferably, a positioning hole 1102 is respectively set at one of the diagonal positions of the PCB board 110, and two product positioning pins 13 corresponding to the positioning holes 1102 are fixedly set at the bottom of the clamping station 101, so that the deflection of the PCB board 110 after the pre-positioning can be limited, so that the positioning accuracy of the PCB board 110 is further enhanced.

[0052] Optionally, in this embodiment, a handle 5 is fixedly provided on the side of the clamp body 1 away from the support seat 2 to facilitate the staff to take and move the clamp body 1.

[0053] Specifically, in this embodiment, combined with Figures 4 to 6 As shown, the support seat 2 includes a fixed support 21, an adapter shaft 22 and a movable support 23. One implementation of this embodiment is that the fixed support 21 is fixedly connected to the fixture body 1 by screws, bolts and other threaded connectors, and the fixed seat body 21 is provided with a clamping portion 2101 that can be clamped with the clamping component 3, and the fixed support 21 and the movable support 23 are both provided with adapter holes, and the adapter shaft 22 passes through the adapter holes provided on the fixed support 21 and the movable support 23 at the same time, so that the movable support 23 can be pivotally connected to the fixed support 21, and the movable support 23 is pivotally connected to the clamping component 3.

[0054] Through the above-mentioned arrangement, when the welding fixture is used, the clamping component 3 can be first driven to disengage from the clamping portion 2101, thereby releasing the clamping relationship between the clamping component 3 and the fixed support 21, and then the movable support 23 can be controlled to rotate around the adapter shaft 22. At this time, the movable support 23 can simultaneously drive the clamping component 3 and the pressure claw 4 to flip in a direction away from the clamping station 101, so that the clamping station 101 remains in a fully open state, so as to effectively avoid the installation of the welded part 100, thereby completing the preparation before welding.

[0055] One implementation method of this embodiment is to refer to Figure 6As shown, the four pressing claws 4 are all curved long strip structures, one end of the pressing claw 4 is used to press the contact conductive sheet 120 onto the PCB board 110, and the other end of the pressing claw 4 is penetrated with a first adapter sleeve hole 41 corresponding to the adapter hole of the movable support 23 and the fixed support 21, so that the adapter shaft 22 can simultaneously pass through the first adapter sleeve hole 41 on the four pressing claws 4, the fixed support 21 and the adapter hole on the movable support 23, and the middle part of the pressing claw 4 is transmission-connected to the clamping component 3. By transmission-connecting the clamping component 3 with the middle part of the pressing claw 4, compared with the method of transmission-connecting the clamping component 3 with the end of the pressing claw 4, the difficulty of the clamping component 3 controlling the lifting or lowering of the pressing claw 4 can be reduced, which is conducive to achieving a higher control accuracy of the clamping component 3 on the pressing claw 4, and helps to improve the durability of the pressing claw 4 when it is in the open state. In addition, because the adapter shaft 22 limits the other end of the pressing claw 4, the pressing claw 4 can maintain a relative position with the fixed support 21 without changing during the process of lifting or lowering, and the connection stability between the two is higher.

[0056] More specifically, continue to refer to Figure 6 As described, five ribs 211 arranged at intervals along the length direction extend upward from the upper surface of the fixed support 21, and a limiting installation groove 212 is formed between two adjacent ribs 211, that is, four limiting installation grooves 212 are provided on the fixed support 21, so as to correspond to the four pressure claws 4 and the four contact conductive sheets 120 to be welded. By providing the limiting installation grooves 212, the pressure claws 4 can be stably installed on the fixed support 21, avoiding the situation where the pressure claws 4 shake left and right on the fixed support 21. It can be understood that the above-mentioned transfer hole is provided on the side wall of the rib 211, so that the transfer shaft 22 can be connected to the fixed support 21 by simultaneously penetrating the five ribs 211.

[0057] Further, in this embodiment, referring to Figure 7 As shown, one side of the movable support 23 close to the adapter shaft 22 is recessed inward to form an avoidance notch 231. In this way, when the movable support 23 is flipped relative to the fixed support 21 to make the pressure claw 4 away from the clamping station 101, the avoidance notch 231 can prevent the movable support 23 from hitting the upwardly extending protruding rib 211, and also help the movable support 23 to control the pressure claw to flip upward to a specified position, ensuring that the clamping station 101 is in a fully open state, avoiding the pressure claw 4 from obstructing and interfering with the installation of the contact conductive sheet 120 on the PCB board 110.

[0058] It should be noted that, in this embodiment, the support seat 2 also includes a buckle pressure plate 24 detachably connected to the fixed support 21, and the end of the buckle pressure plate 24 protrudes outward from the fixed support 21, so that the end of the buckle pressure plate 24 forms the above-mentioned clamping portion 2101. Since the clamping assembly 3 often disengages from the clamping portion 2101, the clamping portion 2101 is easily worn after long-term use, thereby making the clamping effect worse. By providing a buckle pressure plate 24 detachably connected to the fixed support 21, the clamping portion 2101 can be easily inspected, and a good clamping effect can be maintained by repairing or replacing the buckle pressure plate 24, and at the same time, it can avoid replacing the entire fixed support 21, thereby saving costs and enhancing the durability of the entire welding fixture.

[0059] Optionally, in this embodiment, the support base 2 also includes a shaft stopper 25, which can be fixedly connected to the fixed support 21 by means of threaded connection, clamping, etc., so as to prevent the adapter shaft 22 from escaping from the fixed support 21 during use, thereby reducing the hole diameter tolerance and coaxiality tolerance requirements of the adapter shaft 22.

[0060] Specifically, combined Figures 8 to 10 As shown, the fastening assembly 3 includes a movable buckle 31, a transmission shaft 32 and a first elastic fastener 33, wherein the movable buckle 31 can be pivotally connected to the movable support 23, and is connected to the pressure claw 4 through the transmission shaft 32, and the movable buckle 31 can be rotated to engage with the clamping part 2101 on the buckle pressure plate 24.

[0061] One implementation of this embodiment is that an adapter hole for the transmission shaft 32 to pass through is also provided on the movable support 23 and the movable buckle 31, and a second adapter sleeve hole 42 for the transmission shaft 32 to pass through is opened in the middle position of the pressure claw 4, and the transmission shaft 32 can rotatably pass through the second adapter sleeve hole 42 and the corresponding adapter holes on the movable support 23 and the movable buckle 31 at the same time, so that the buckle pressure plate 24 can rotate relative to the fixed support 21.

[0062] In addition, the first elastic fastener 33 is arranged between the movable support 23 and the pressure claw 4. An implementation method of this embodiment is that four first assembly holes 232 are opened from top to bottom on the top of the movable support 23, corresponding to the four pressure claws 4, and each of the four first assembly holes 232 is penetrated by a first elastic fastener 33. The first elastic fastener 33 is preferably an elastic ejector pin, so that when the movable buckle 31 is rotated to engage with the buckle pressure plate 24, the first elastic fastener 33 can press the pressure claw 4 onto the clamping station 101.

[0063] In the above arrangement, when the movable buckle 31 is clamped to the clamping portion 2101, the first elastic fastener 33 is in a compressed state, so that the first elastic fastener 33 can drive the pressure claw 4 to always move in the direction of pressing the contact conductive sheet 120, thereby limiting the longitudinal movement of the pressure claw 4. At this time, since the movable buckle 31 and the fixed support 21 are in a relatively static state, and the transmission shaft 32 is arranged through the movable buckle 31, the movable support 23 and the pressure claw 4, the movable support 23, the pressure claw 4 and the transmission shaft 32 will also be constrained accordingly, and at this time, the movable support 23, the pressure claw 4 and the transmission shaft 32 all maintain a relatively static relationship with the fixed support 21. In other words, when the movable buckle 31 is clamped to the clamping portion 2101, the pressure claw 4 will be subjected to the dual pressure of the relatively fixed transmission shaft 32 and the first elastic fastener 33 in a compressed state at the same time. On this basis, the pressing effect of the pressure claw 4 on the contact conductive sheet 120 is significantly improved.

[0064] In addition, it can be understood that when the elastic performance of the first elastic fastener 33 is weakened, resulting in a decrease in the force acting on the pressure claw 4, the transmission shaft 32 can still maintain the fixing effect on the pressure claw 4, so that the contact conductive sheet 120 is still in a clamped state during welding, avoiding conditions such as deviation and tilting, and ensuring the welding quality. Therefore, under the dual protection of the first elastic fastener 33 and the adapter shaft 32, the reliability of the clamping of the pressure claw 4 on the contact conductive sheet 120 can be ensured, thereby ensuring the welding quality and improving the reliability, durability and stability of the welding fixture.

[0065] Further, refer to Fig.11 As shown, in the present embodiment, the fixing component 3 also includes a rod-shaped connecting member 34, the length direction of the connecting member 34 is parallel to the length direction of the movable support 21, and a movable buckle 31 is connected to each of the two ends of the connecting member 34, and correspondingly, a buckle pressure plate 24 corresponding to the movable buckle 31 is provided at each of the two ends of the fixed support 21, thereby further improving the clamping stability of the fixing component 3 and the support base 2.

[0066] For example, through the above-mentioned clamping assembly 3 and support seat 2, when the welding fixture is in use, when it is necessary to release the clamping relationship between the movable buckle 31 and the fixed support 21, the staff first operates the connecting piece 34 to drive the movable buckle 31 around the transmission shaft 32 and rotate in a direction away from the clamping station 101. At this time, the two movable buckles 31 are disengaged from the clamping part 2101, and the clamping relationship with the clamping part 2101 is released. After that, the staff continues to operate the movable support 23 to rotate relative to the fixed support 21 with the transfer shaft 22 as the rotation center. At this time, the part of the movable support 23 connected to the transmission shaft 32 can rotate with the transmission shaft 32, the movable buckle 31, the connecting piece 34 and the pressure claw 4 at the same time in a direction away from the clamping station 101, so that the clamping station 101 is in a fully open state.

[0067] When the contact conductive sheet 120 is placed on the PCB board 110, and the pressing claw 4 needs to press the contact conductive sheet 120 onto the PCB board 110, the staff will operate the movable support 23 again to rotate relative to the fixed support 21 with the adapter shaft 22 as the rotation center. At this time, the movable support 23 can simultaneously rotate along the direction close to the clamping station 101 with the transmission shaft 32, the movable buckle 31, the connecting piece 34 and the pressing claw 4 until one end of the pressing claw 4 is attached to the contact conductive sheet 120. At this time, the movable support 23 can continue to rotate along the direction close to the clamping station 101, and at the same time, the first elastic fastener 33 can be compressed, so that the pressing claw 4 can be in a clamping state, until the movable buckle 31 moves to a position that is engaged with the clamping portion 2101, thereby completing the clamping.

[0068] Optionally, in this embodiment, the fastening assembly 3 further includes a second elastic fastener 35, which is a compression spring, and two second elastic fasteners 35 are provided, and the two second elastic fasteners 35 are respectively sandwiched between the corresponding active buckle 31 and the active support 23. The function of the second elastic fastener 35 is: when the active buckle 31 is clamped on the clamping portion 2101, the second elastic fastener 35 still has an elastic pre-tightening force at this time, so that the active buckle 31 always has a moving state on the locking clamping portion 2101, thereby ensuring the firmness of the connection between the active buckle 31 and the fixed support 21, and avoiding the loosening of the active buckle 31.

[0069] Optionally, in this embodiment, refer to Figure 7As shown, the fastening assembly 3 also includes a closing handle 36, which is fixedly connected to the top of the movable support, and a clearance space for the movable buckle 31 to rotate is formed between the closing handle 36 and the movable buckle 31. The staff can pinch the closing handle 36 and the connecting rod 34 at the same time, and use the closing handle 36 as a force support point, so as to apply a greater stabilizing force during the operation of rotating the connecting rod 34. In this way, the staff can more easily control the movement of the connecting rod 34, so as to more conveniently detach the first buckle plate 31 from the clamping portion 2101, effectively reducing the burden on the hands during operation and improving work efficiency.

[0070] Furthermore, a second assembly hole 361 is provided on the closing handle 36, and the first elastic fastener 33 can pass through the second assembly hole 361 and the first assembly hole 213 in sequence to abut against the top surface of the pressing claw 4. Through the action of the first assembly hole 213 and the second assembly hole 361, it can be ensured that the first elastic fastener 34 can be stably assembled on the support seat 2.

[0071] Embodiment 2

[0072] This embodiment provides a welding device, referring to Fig.12 As shown, the welding equipment includes a workbench 200, a robot automatic loader 300 and a welding fixture of one of the above embodiments.

[0073] Specifically, in this embodiment, refer to Figure 3 As shown, a support platform 210 for fixing and placing the welding fixture is provided on the workbench 200, and a guide column (not shown in the figure) is protrudingly provided on the support platform 210, which is used to match the guide sleeve 14 provided on the fixture body 1. A guide sleeve 14 is provided at each of the four corners of the fixture body 1, and four guide columns are provided on the support platform 210 accordingly. When installing the welding fixture, the guide sleeve 14 can be sleeved on the guide column to achieve accurate installation of the welding fixture, thereby ensuring welding quality.

[0074] Further, the guide column includes a first column and a second column, the guide sleeve 14 includes a first guide sleeve and a second guide sleeve, the first column and the second column have different cross-sectional areas, the first guide sleeve and the second guide sleeve have different cross-sectional areas, and the first column and the first guide sleeve have the same cross-sectional areas, and the second column and the second guide sleeve have the same cross-sectional areas, so as to achieve the foolproofing effect of the fixture body 1 by changing the cross-sectional areas. One implementation of this embodiment is that the fixture body 1 is respectively provided with a first guide sleeve at both ends of one side, and a second guide sleeve at both ends of the other opposite side, and the first column and the second column are distributed on the support platform 210 in the same manner, so as to ensure the accuracy of the installation position of the fixture body 1.

[0075] Specifically, in this embodiment, the robot automatic loader 300 is installed on the workbench 200. When the welding fixture is placed on the support platform 210 and fixed, the robot automatic loader 300 can transfer the workpiece to be welded (specifically the PCB board 110 in this embodiment) to the clamping station 101 of the welding fixture, and then after the contact conductive sheet 120 is welded on the PCB board 110, the robot automatic loader 300 transfers the PCB board 110 to the subsequent operation position for processing.

[0076] The following will describe in detail how to complete the process of welding the contact conductive sheet 120 on the PCB board 110 by using the welding equipment:

[0077] (1) Welding preparation: First, the worker pinches the closing handle 36 and the connecting rod 34, the second elastic fastener 35 is compressed, and the movable buckle 31 is disengaged from the buckle pressure plate 24, driving the movable support 23 to rotate around the transfer shaft 22, and at the same time, the movable support 23 brings the transmission shaft 32 and the pressure claw 4 to flip open from the limiting installation groove 212 of the fixed support 21, so that the pressure claw 4 is flipped away from the fixture body 1, so that the pressure claw 4 is in a fully open state;

[0078] (2) Product clamping: The fixture body 1 is positioned and installed on the support platform 210 through the guiding action of the guide sleeve 14 and the guide column; then, the PCB board 110 is accurately positioned on the clamping station 101 through the action of the product positioning pin 13 and the stop block 12.

[0079] (3) Loading the contact conductive sheet 120: The contact conductive sheet 120 is installed in the positioning groove 1101 of the PCB board 110 by the robot automatic loading machine 300 for limiting the position.

[0080] (4) Pressing the contact conductive sheet 120: The staff operates the closing handle 36, rotates the closing handle 36 around the transfer shaft 22 in the direction close to the clamping station 101, and at the same time, the closing handle 36 drives the clamping assembly 3 to flip in the direction close to the clamping station 101 until one end of the pressing claw 4 is in contact with the surface of the contact conductive sheet 120. At this time, the closing handle 36 is continued to be pushed, and the first elastic fastener 33 above the pressing claw 4 is gradually compressed, so that the pressing claw 4 remains in a pressed state until the active buckle 31 is re-engaged and connected to the clamping portion 2101. At this time, the active buckle 31 and the clamping portion 2101 are mechanically locked, thereby completing the pressing of the contact conductive sheet 120.

[0081] (5) Soldering the contact conductive sheet 120: Solder the contact conductive sheet 120 onto the PCB board 110 using a soldering device in a compressed state.

[0082] (6) After welding is completed, repeat step (1).

[0083] During the welding process, the movable buckle 31 can be firmly clamped on the clamping portion 2101, so that the transmission shaft 32 and the pressure claw 4 are relatively fixed to the fixed support 21. At this time, since the transmission shaft 32 is stationary relative to the fixed support 21, the pressure claw 4 connected to the transmission shaft 32 is also subject to the constraint effect in the vertical direction, so that the pressure claw 4 can maintain a clamped state. At the same time, the first elastic fastener 33 is in a compressed state, and can continue to apply downward pressure to the pressure claw 4, further enhancing the clamping effect of the pressure claw 4 on the contact conductive sheet 120. Even if the first elastic fastener 33 has a phenomenon of reduced elasticity after long-term use, it can continue to apply a clamping force to the pressure claw 4 through the transmission shaft 32, so that the pressure claw 4 can always be pressed on the contact conductive sheet 120, so that the contact conductive sheet 120 is still in a compressed state during welding, avoiding the conditions of deviation, tilt, etc. Therefore, by using the above-mentioned welding fixture for welding, the use stability and reliability of the welding equipment is effectively improved, and the welding quality is ensured at the same time.

[0084] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0085] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Welding fixture, characterized in that, include: A clamp body (1), wherein the clamp body (1) is provided with a clamping station (101) for placing a part to be welded (100); A support seat (2), the support seat (2) is fixedly connected to the clamp body (1), and a clamping portion (2101) is provided on the support seat (2); A pressing claw (4), the pressing claw (4) being used to press the workpiece (100) to be welded onto the clamping station (101); A fastening assembly (3), the fastening assembly (3) comprising an active buckle (31), a transmission shaft (32) and a first elastic fastener (33); the active buckle (31) is pivotally connected to the support seat (2) via the transmission shaft (32), and is transmission-connected to the pressing claw (4) via the transmission shaft (32); and the active buckle (31) can be rotated to be engaged with the engaging portion (2101); the first elastic fastener (33) is arranged between the support seat (2) and the pressing claw (4); When the movable buckle (31) is engaged with the engaging portion (2101), the movable buckle (31) can drive the transmission shaft (32) and the pressing claw (4) to maintain a relatively static state with the support seat (2), and at the same time, the first elastic fastener (33) is configured to drive the pressing claw (4) to stop at a clamping position, and at the clamping position, the pressing claw (4) can clamp the workpiece (100) to be welded onto the clamping station (101).

2. The welding fixture according to claim 1, characterized in that: The fastening assembly (3) further comprises a second elastic fastener (35), the two ends of which are respectively connected to the support seat (2) and the movable buckle (31), and the second elastic fastener (35) is configured to drive the movable buckle (31) to stop and clamp to the clamping portion (2101).

3. The welding fixture according to claim 1, characterized in that: The support seat (2) comprises a fixed support (21), a transfer shaft (22) and a movable support (23); the fixed support (21) is fixedly connected to the clamp body (1) and is provided with the clamping portion (2101); the movable support (23) is pivotally connected to the fixed support (21) via the transfer shaft (22) and is pivotally connected to the movable buckle (31) and the pressure claw (4) via the transmission shaft (32).

4. The welding fixture according to claim 3, characterized in that: The pressing claw (4) is in the form of an elongated strip, and one end of the pressing claw (4) is used to press the workpiece (100) to be welded. The adapter shaft (22) is simultaneously passed through the other end of the pressing claw (4), the fixed support (21) and the movable support (23). The movable buckle (31) is connected to the middle part of the pressing claw (4) through the transmission shaft (32).

5. The welding fixture according to claim 4, characterized in that: A plurality of position limiting installation grooves (212) are arranged at intervals along the same row on the fixed support (21), a pressure claw (4) is inserted into each of the position limiting installation grooves (212), and the adapter shaft (22) is simultaneously passed through the plurality of position limiting installation grooves (212), the pressure claw (4), the fixed support (21) and the movable support (23).

6. The welding fixture according to claim 3, characterized in that: The fastening assembly (3) further comprises a closing handle (35), wherein the closing handle (35) is fixedly connected to the top of the fixed support (21), and the closing handle (35) and the movable buckle (31) are arranged at a distance to form an escape space for the movable buckle (31) to rotate.

7. The welding fixture according to claim 3, characterized in that: The fastening assembly (3) further comprises a connecting member (34), the two ends of the connecting member (34) are respectively connected to one of the movable buckles (31), and the two ends of the fixed support (21) are respectively provided with a clamping portion (2101) corresponding to the movable buckle (31).

8. The welding fixture according to claim 1, characterized in that: A plurality of stop blocks (12) are also arranged at intervals on the clamp body (1) along the circumference of the clamping station (101); the plurality of stop blocks (12) are together enclosed to clamp the workpiece (100) to be welded on the clamping station (101).

9. The welding fixture according to claim 1, characterized in that: The clamping station (101) is provided with a product positioning pin (13), and the product positioning pin (13) is arranged corresponding to the positioning hole on the part to be welded (100).

10. Welding equipment, characterized in that It comprises a workbench (200), a robot automatic loader (300) and a welding fixture according to any one of claims 1 to 9, wherein the workbench (200) is provided with a support platform (210) for fixing and placing the welding fixture, and the robot automatic loader (300) is used to transfer the workpiece (100) to be welded to the welding fixture.

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