Automatic alternating current spot welding machine and welding method thereof

Abstract

The invention relates to an automatic alternating-current spot welding machine and a welding method thereof, and belongs to the technical field of automatic welding equipment.The automatic alternating-current spot welding machine comprises an alternating-current spot welding machine body, a base located on one side of the alternating-current spot welding machine body, a feeding plate transversely sliding on the top face of the base and a driving mechanism arranged on the base and connected with the feeding plate; a movable electrode bar and a fixed electrode bar are arranged at the welding end of the alternating current spot welding machine body, a pushing piece is arranged on the alternating current spot welding machine body, and the pushing end of the pushing piece is connected with the movable electrode bar so that the movable electrode bar can move in the direction close to or away from the fixed electrode bar. The driving mechanism drives the feeding plate to intermittently move towards the welding end close to the alternating current spot welding machine body, and the feeding plate is driven by the driving mechanism to intermittently move towards the welding end close to the alternating current spot welding machine body. The welding device has the effect of improving the welding efficiency and the automation degree.

Description

Technical Field

[0001] The present application relates to the technical field of automatic welding equipment, and in particular to an automatic AC spot welding machine and a welding method thereof. Background Art

[0002] AC spot welder is a welding device used for metal connection. It uses the resistance heat generated by alternating current to melt the metal, thereby achieving connection between metal parts.

[0003] A chip is provided in the temperature sensor. The chip has two pins, and each pin needs to be welded to the core of the cable. When using an AC spot welder to weld and fix the core and pin, the staff needs to hold the cable in one hand and the chip in the other hand, so that the core of the cable and the pin on the chip are abutted up and down, and the abutted core and pin are facing the welding end of the AC spot welder to achieve welding and fixation of the core and pin. Repeat the above actions to complete the welding of the other pin on the chip to the core on another cable.

[0004] However, the above-mentioned related technologies have the following problems: the welding between each wire core and pin requires manual participation, the automation level is low and the welding efficiency is low. Summary of the invention

[0005] In order to improve welding efficiency and automation, the present application provides an automatic AC spot welding machine and a welding method thereof.

[0006] In the first aspect, the present application provides an automatic AC spot welding machine adopting the following technical solution: An automatic AC spot welding machine comprises an AC spot welding machine body, a base located on one side of the AC spot welding machine body, a loading plate that slides laterally on the top surface of the base, and a driving mechanism arranged on the base and connected to the loading plate. The welding ends of the AC spot welding machine body are a moving electrode rod and a fixed electrode rod. A pushing member is arranged on the AC spot welding machine body. The pushing end of the pushing member is connected to the moving electrode rod so that the moving electrode rod can move toward or away from the fixed electrode rod, thereby welding the wire core and the pin between the moving electrode rod and the fixed electrode rod. The driving mechanism drives the loading plate to intermittently move toward the welding end close to the AC spot welding machine body.

[0007] By adopting the above technical solution, the moving electrode rod of the AC spot welding machine body can be driven by the pushing member to move towards or away from the fixed electrode rod, thereby completing the welding operation; the driving mechanism is used to make the loading plate intermittently move towards the welding end, ensuring that each component to be welded can be positioned and welded in turn, thereby improving the welding efficiency and degree of automation.

[0008] Preferably, the driving mechanism includes a driving member longitudinally installed between two sides of the base, an eccentric wheel located on one side of the base and connected to the driving end of the driving member, a pushing arm rotatably connected to the eccentric wheel shaft, an arcuate rack fixedly connected to the top of the pushing arm, a linear rack fixedly connected to the bottom surface of the loading plate and meshing with the arcuate rack, and a trigger assembly arranged on the side of the base and connected to the bottom end of the pushing arm, the driving member drives the eccentric wheel to rotate eccentrically, the eccentric wheel drives the pushing arm to swing back and forth in a curved shape, and the arcuate rack drives the loading plate to slide laterally through the linear rack.

[0009] By adopting the above technical solution, the driving part drives the eccentric wheel to rotate eccentrically, and the eccentric wheel drives the pushing arm to swing back and forth in a curve. The arc-shaped rack drives the loading plate to slide laterally by engaging with the linear rack, thereby realizing intermittent movement of the loading plate, making it convenient to weld the wire cores and pins on the loading plate one by one.

[0010] Preferably, the trigger assembly is electrically connected to the pusher, and when the push arm triggers the trigger assembly, the trigger assembly triggers the pusher, so that the pusher drives the moving electrode rod to move toward the direction close to the fixed electrode rod.

[0011] By adopting the above technical solution, the trigger component is electrically connected to the pushing member. When the pushing arm triggers the trigger component, the trigger component can respond in time and trigger the pushing member, so that the pushing member drives the moving electrode rod to move quickly in the direction close to the fixed electrode rod, thereby achieving precise welding positioning of the wire core and the pin, and improving welding accuracy and efficiency.

[0012] Preferably, a guide notch is provided at the bottom end of the pushing arm, and the trigger assembly includes a guide block fixedly connected to the side of the base and slidably connected to the guide notch, a trigger rod slidably connected to the inside of the guide block, and a trigger member arranged inside the guide block, the bottom end of the trigger rod is fixedly connected to the trigger block slidably connected to the inside of the guide block, the circumferential side of the trigger rod is sleeved with an elastic member located inside the guide block, the top end of the trigger rod passes through the interior of the guide block and extends outside the guide block, and the trigger member is electrically connected to the pushing member.

[0013] By adopting the above technical solution, the trigger component can accurately control the pusher, ensuring that each time the guide notch presses the trigger rod, the moving electrode rod can be moved down in time, accurately welding and fixing the wire core and the pin, thereby improving the reliability of automated welding.

[0014] Preferably, a limiting component for limiting the vertical movement of the loading plate is provided on the side surface of the base.

[0015] By adopting the above technical solution, the limiting assembly can effectively reduce the vertical movement of the loading plate caused by the meshing of the arc-shaped rack and the linear rack during the lateral sliding process, thereby improving the stability during the welding process.

[0016] Preferably, the limit assembly includes a connecting arm fixedly connected to one side of the base, a fixed block fixedly connected to an end of the connecting arm away from the base and located above the loading plate, a limit rod vertically penetrating the fixed block and slidably connected to the fixed block, a limit strip fixedly connected to the bottom of the peripheral side of the limit rod, a reset member sleeved on the peripheral side of the limit rod, and a limit ring fixedly sleeved on the peripheral side of the limit rod, two limit rings are provided on the limit rod, the bottom surface of the upper limit ring abuts against the top surface of the fixed block, the reset member is fixedly connected between the bottom surface of the fixed block and the top surface of the lower limit ring, and the limit strip serves to limit the lifted loading plate.

[0017] By adopting the above technical solution, the stability of the feeding plate during the sliding process is ensured, thereby ensuring the accurate alignment of the wire core and the pin, and improving the welding quality and efficiency.

[0018] Preferably, a plurality of equally spaced cable grooves are provided on the top surface of the loading plate and located on the side of the loading plate away from the AC spot welding machine body, and a plurality of equally spaced chip grooves are provided on the top surface of the loading plate and located on the side of the loading plate close to the AC spot welding machine body, and elastic blocks that serve as limiting functions are fixed in the cable grooves and the chip grooves.

[0019] By adopting the above technical solution, the setting of the elastic card block can effectively limit the cable and the chip, effectively reduce the displacement during the welding process, and thus improve the welding accuracy and quality.

[0020] Preferably, a pin groove connected to the chip groove is opened on the top surface of the loading plate, a wire core groove connected to the cable groove is opened on the top surface of the loading plate, and a connecting port connecting the pin groove and the wire core groove is opened on the top surface of the loading plate.

[0021] By adopting the above technical solution, the precise correspondence and positioning of the chip pins and the cable cores are achieved, which facilitates the precise implementation of subsequent welding operations.

[0022] Preferably, the driving member is a dual-axis motor, and the two driving ends of the dual-axis motor are fixedly connected to a rotating shaft, and the two rotating shafts respectively pass through the two sides of the base and extend outside the base, the number of the eccentric wheels is consistent with the number of the rotating shafts and corresponds one to one, and the rotating shaft eccentrically passes through the eccentric wheel and is fixedly connected to the eccentric wheel.

[0023] By adopting the above technical solution, the two driving ends of the dual-axis motor can rotate synchronously, driving the two rotating shafts to rotate synchronously, thereby causing the two eccentric wheels to rotate eccentrically. The eccentric rotation of the eccentric wheels can drive the push arm to swing horizontally back and forth in a curved shape, thereby realizing intermittent movement of the loading plate, ensuring the precise alignment and welding of the wire core and the pin, and improving welding efficiency and accuracy.

[0024] In a second aspect, the present application provides a welding method of an automatic AC spot welding machine, comprising the following steps: S1: Place the chips into the chip slots one by one, and place the two pins on each chip into the two pin slots corresponding to the positions, until the pins in the pin slots extend to the connecting ports; S2: Place the cables one by one into the cable groove, and allow the wire core to extend through the wire core groove to the connecting port until the wire core abuts against the top surface of the pin; S3: starting the driving member, which drives the loading plate to intermittently move toward the welding end close to the AC spot welding machine body; S4: When the trigger assembly is triggered, the pushing end of the pushing member pushes the moving electrode rod to move downward, so as to weld and fix the wire core and the pin between the moving electrode rod and the fixed electrode rod.

[0025] By adopting the above technical solution, precise positioning and efficient operation are achieved in the automated welding process. Specifically, by setting chip slots and pin slots on the loading plate and coordinating the design of cable slots and wire core slots, it is ensured that the chip and its pins are accurately aligned with the wire core at the end of the cable before welding, thereby improving the welding accuracy; the driving member drives the loading plate to move intermittently toward the welding end, ensuring that each component to be welded can enter the welding area in an orderly manner. When the trigger assembly is triggered, the pushing member drives the moving electrode rod to move toward the fixed electrode rod, thereby achieving stable contact and reliable welding between the wire core and the pin.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The moving electrode rod of the AC spot welding machine body can be driven by the pusher to move towards or away from the fixed electrode rod to complete the welding operation; the driving mechanism is used to make the feeding plate move intermittently towards the welding end, ensuring that each part to be welded can be positioned and welded in turn, thereby improving the welding efficiency and automation level; 2. It realizes precise positioning and efficient operation in the automated welding process. Specifically, by setting chip slots and pin slots on the loading plate and coordinating the design of cable slots and wire core slots, it ensures that the chip and its pins are accurately aligned with the wire core at the end of the cable before welding, thereby improving the welding accuracy. The driving member drives the loading plate to move intermittently toward the welding end, ensuring that each component to be welded can enter the welding area in an orderly manner. When the trigger assembly is triggered, the pushing member drives the moving electrode rod to move toward the fixed electrode rod, thereby realizing stable contact and reliable welding between the wire core and the pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of this application.

[0028] Figure 2 It is an exploded view of the base and the AC spot welding machine body of the present application.

[0029] Figure 3 yes Figure 2 A partial enlarged view of part A.

[0030] Figure 4 yes Figure 2 A partial enlarged view of part B.

[0031] Figure 5 It is a structural schematic diagram of the base, loading plate and driving mechanism of the present application.

[0032] Figure 6 yes Figure 5 A partial enlarged view of part C.

[0033] Figure 7 yes Figure 5 A partial enlarged view of part D.

[0034] Explanation of the accompanying drawings: 1. AC spot welding machine body; 11. Moving electrode rod; 111. Second mounting seat; 12. Fixed electrode rod; 121. First mounting seat; 13. Pushing member; 14. Mounting frame; 2. Base; 3. Loading plate; 31. Slide bar; 32. Abutment block; 33. Cable groove; 34. Chip groove; 35. Elastic card block; 36. Pin groove; 37. Wire core groove; 38. Connecting port; 39. Make way port; 4. Eccentric wheel; 41. Pushing arm; 411. Guide notch; 42. Arc rack; 43. Linear rack; 44. Rotating shaft; 5. Connecting arm; 51. Fixed block; 52. Limit rod; 53. Limit strip; 54. Reset member; 55. Limit ring; 6. Guide block; 61. Trigger rod; 62. Trigger member; 63. Trigger block; 64. Elastic member. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] The present application embodiment discloses an automatic AC spot welding machine. Figure 1 and Figure 2 The automatic AC spot welding machine includes an AC spot welding machine body 1, a base 2 located on one side of the AC spot welding machine body 1, a loading plate 3 sliding laterally on the top surface of the base 2, and a driving mechanism arranged on the base 2 for driving the loading plate 3 to intermittently move toward the welding end close to the AC spot welding machine body 1; under the intermittent conveying action of the driving mechanism, the welding end of the AC spot welding machine can weld the wire cores and pins located on the loading plate 3 one by one.

[0037] The welding ends of the AC spot welding machine body 1 are a moving electrode rod 11 and a fixed electrode rod 12. The moving electrode rod 11 can move vertically. The fixed electrode rod 12 is fixed to the side of the AC spot welding machine body 1 close to the base 2 through a first mounting seat 121. The moving electrode rod 11 and the fixed electrode rod 12 are located on the same vertical straight line. The moving electrode rod 11 is located above the fixed electrode rod 12, and the welding end of the moving electrode rod 11 and the welding end of the fixed electrode rod 12 are arranged opposite to each other. A pushing member 13 for driving the moving electrode rod 11 to move vertically is provided on the AC spot welding machine body 1. The pushing end of the pushing member 13 is connected to the moving electrode rod 11 so that the moving electrode rod 11 can move in a direction close to or away from the fixed electrode rod 12. The AC spot welding machine body 1 is electrically connected to the moving electrode rod 11 and the fixed electrode rod 12 respectively so that the moving electrode rod 11 and the fixed electrode rod 12 can weld and fix the wire core and the pin.

[0038] In this embodiment, optionally, the pushing member 13 is an electric push rod, a mounting bracket 14 is installed on the top surface of the AC spot welding machine body 1, the electric push rod is vertically installed on the top surface of the mounting bracket 14, and the pushing end of the electric push rod is fixedly connected to a second mounting seat 111, the second mounting seat 111 vertically slides on the side of the AC spot welding machine body 1 close to the base 2, and the moving electrode rod 11 is vertically installed on the second mounting seat 111.

[0039] Reference Figure 2 and Figure 3 The top surfaces of both sides of the base 2 are provided with slide grooves extending along the length direction of the base 2. The loading plate 3 is horizontally arranged, and the length direction of the loading plate 3 is consistent with the length direction of the base 2. Two slide bars 31 extending along the length direction of the loading plate 3 are fixedly connected to the bottom surface of the loading plate 3. The two slide bars 31 correspond to the positions of the two slide grooves respectively, and the slide bars 31 are slidably connected to the slide grooves corresponding to the positions; thereby, under the sliding connection between the slide bars 31 and the slide grooves, the lateral sliding of the loading plate 3 and the base 2 is realized; and the cross-section of the slide bar 31 is square, so that the slide bar 31 can be detached from the slide groove by moving vertically upward.

[0040] Reference Figure 2 and Figure 4The driving mechanism includes a driving member longitudinally installed between the two sides of the base 2, an eccentric wheel 4 located on one side of the base 2 and connected to the driving end of the driving member, a pushing arm 41 rotatably connected to the shaft of the eccentric wheel 4, an arc-shaped rack 42 fixedly connected to the top of the pushing arm 41, a linear rack 43 fixedly connected to the bottom surface of the loading plate 3 and meshing with the arc-shaped rack 42, and a trigger assembly arranged on the side of the base 2 and connected to the bottom end of the pushing arm 41. The driving end of the driving member drives the eccentric wheel 4 to rotate eccentrically, so that the eccentric wheel 4 drives the pushing arm 41 to swing in a reciprocating curve laterally, so that when the arc-shaped rack 42 moves up to mesh with the linear rack 43, the arc-shaped rack 42 pushes the loading plate 3 to slide laterally by a unit distance through the linear rack 43. The trigger assembly is electrically connected to the pusher 13. When the push arm 41 triggers the trigger assembly, the trigger assembly triggers the pusher 13, so that the pusher 13 drives the moving electrode rod 11 to move toward the fixed electrode rod 12, thereby welding the wire core and the pin between the moving electrode rod 11 and the fixed electrode rod 12.

[0041] Reference Figure 4 and Figure 5 In the process of the eccentric wheel 4 driving the push arm 41 to swing back and forth in a curve, when the arc rack 42 moves up to mesh with the linear rack 43, the arc rack 42 tends to lift up the linear rack 43. In order to reduce this tendency and reduce the influence of this tendency on the loading plate 3, a limiter assembly is provided on the side of the base 2 to limit the vertical movement of the loading plate 3. In order to play a better limiting role, two groups of limiters are provided, and the two groups of limiters are symmetrically arranged on both sides of the base 2.

[0042] Each set of limiting components includes a connecting arm 5 fixedly connected to one side of the base 2, a fixed block 51 fixedly connected to the end of the connecting arm 5 away from the base 2 and located above the loading plate 3, a limiting rod 52 vertically penetrating the fixed block 51 and slidably connected to the fixed block 51, a limiting strip 53 fixedly connected to the bottom of the peripheral side of the limiting rod 52, a reset member 54 sleeved on the peripheral side of the limiting rod 52, and a limiting ring 55 fixedly sleeved on the peripheral side of the limiting rod 52; the cross-section of the connecting arm 5 is C-shaped and its opening faces the loading plate 3, so that the horizontally arranged fixed block 51 can be located above the loading plate 3; two limiting rings 55 are arranged on the same limiting rod 52, the bottom surface of the limiting ring 55 located above is abutted against the top surface of the fixed block 51, the top end of the reset member 54 is fixedly connected to the bottom surface of the fixed block 51, and the bottom end of the reset member 54 is fixedly connected to the top surface of the limiting ring 55 located below. The cross section of the limiting strip 53 is in an arc shape, and the outer arc side of the limiting strip 53 is arranged downward; the outer arc side of the limiting strip 53 serves to limit the lifted loading plate 3.

[0043] Two groups of abutment parts are fixedly connected to the top surface of the loading plate 3, and the two groups of abutment parts are respectively located on both sides of the top surface of the loading plate 3, and the two groups of abutment parts correspond to the positions of the two limit strips 53 respectively; each group of abutment parts includes a plurality of abutment blocks 32 fixed on one side of the top surface of the loading plate 3 and distributed at equal intervals along the length direction of the loading plate 3, and the outer arc side of the limit strip 53 abuts against the top surface of the abutment block 32 at the corresponding position, so that the lifting loading plate 3 is limited by the abutment between the limit strip 53 and the abutment block 32.

[0044] In this embodiment, the driving member is a dual-axis motor, the two driving ends of the dual-axis motor rotate in the same direction, and the two driving ends of the dual-axis motor are fixedly connected to the rotating shaft 44, the two rotating shafts 44 respectively penetrate the two sides of the base 2 and extend outside the base 2, the number of eccentric wheels 4 is consistent with the number of rotating shafts 44 and corresponds one to one, the rotating shaft 44 eccentrically penetrates the eccentric wheels 4 and is fixedly connected to the eccentric wheels 4. The number of pushing arms 41 is consistent with the number of eccentric wheels 4 and corresponds one to one, the number of linear racks 43 is consistent with the number of arc-shaped racks 42 and corresponds one to one, and the two slide bars 31 are spaced between the two linear racks 43.

[0045] Reference Figure 2 and Figure 6 In order to limit the cables and chips on the loading plate 3; a plurality of equally spaced cable grooves 33 are provided on the top surface of the loading plate 3 and on the side of the loading plate 3 away from the AC spot welding machine body 1, and the cable groove 33 is located between two adjacent abutment blocks 32, and a plurality of equally spaced chip grooves 34 are provided on the top surface of the loading plate 3 and on the side of the loading plate 3 close to the AC spot welding machine body 1, and elastic card blocks 35 are fixed in the cable grooves 33 and the chip grooves 34, and the elastic card blocks 35 in the cable grooves 33 can limit the cables in the cable grooves 33, and the elastic card blocks 35 in the chip grooves 34 can limit the chips in the chip grooves 34.

[0046] A pin slot 36 connected to the chip slot 34 is provided on the top surface of the loading plate 3 and located on the side of the chip slot 34 close to the cable slot 33. Two pin slots 36 are provided on the same chip slot 34 so that two pins on each chip can be placed in the pin slots 36 at corresponding positions. A wire core slot 37 connected to the cable slot 33 is provided on the top surface of the loading plate 3 and located on the side of the cable slot 33 close to the chip slot 34. The wire core slot 37 is used to place the wire core on the end of the cable, and the wire core slot 37 corresponds to the pin slot 36.

[0047] A connecting port 38 extending along the length direction of the loading plate 3 and vertically penetrating the loading plate 3 is provided on the top surface of the loading plate 3. The connecting port 38 is located between the wire core groove 37 and the pin groove 36, and the connecting port 38 connects the wire core groove 37 and the pin groove 36. The moving electrode rod 11 is located above the connecting port 38, and the wire core and the pin are abutted at the connecting port 38. A clearance port 39 corresponding to the position of the first mounting seat 121 is provided on the side of the base 2 close to the AC spot welding machine body 1. The first mounting seat 121 and the fixed electrode rod 12 extend between the two sides of the base 2 through the clearance port 39. The spacing between two pins on the same chip is equal to the spacing between two pins close to each other on two adjacent chips, and the spacing is equal to the distance of one unit that the arc-shaped rack 42 pushes the loading plate 3 to move horizontally, so as to facilitate welding one by one.

[0048] Reference Figure 6 and Figure 7 , a guide notch 411 is provided at the bottom end of the push arm 41, and the trigger assembly includes a guide block 6 fixedly connected to the side of the base 2, a trigger rod 61 slidably connected inside the guide block 6, and a trigger member 62 arranged inside the guide block 6; the guide block 6 is disc-shaped, the guide block 6 is slidably connected in the guide notch 411, and an accommodating cavity is provided inside the guide block 6, and the trigger member 62 is installed at the bottom of the inner wall of the accommodating cavity, and the trigger end of the trigger member 62 is arranged upward; a trigger block 63 slidably connected to the accommodating cavity is fixedly connected at the bottom end of the trigger rod 61, and an elastic member 64 is sleeved on the peripheral side of the trigger rod 61, the top end of the elastic member 64 is fixedly connected to the top of the inner wall of the accommodating cavity, and the bottom end of the elastic member 64 is fixedly connected to the top surface of the trigger block 63, the top end of the trigger rod 61 passes through the accommodating cavity and extends outside the guide block 6, and the trigger member 62 is electrically connected to the push member 13. In this embodiment, the trigger member 62 is a trigger switch with the trigger end facing upward.

[0049] When the top of the inner wall of the guide notch 411 presses the top of the trigger rod 61, so that the downwardly moving trigger block 63 triggers the trigger member 62, since the trigger member 62 is electrically connected to the push member 13, the push end of the push member 13 pushes the moving electrode rod 11 downward to weld and fix the wire core and the pin between the moving electrode rod 11 and the fixed electrode rod 12. When the top of the inner wall of the guide notch 411 is separated from the contact with the top of the trigger rod 61, the trigger rod 61 is reset under the reset action of the elastic member 64.

[0050] The implementation principle of an automatic AC spot welding machine in an embodiment of the present application is as follows: the fixed electrode rod 12 passes through the make way opening 39 so that the fixed electrode rod 12 is located below the connecting opening 38, and the moving electrode rod 11 is located above the connecting opening 38, and the chips are placed one by one into the chip slot 34, and the two pins on each chip are placed into the two pin slots 36 corresponding to the positions, respectively, until the pins in the pin slots 36 extend to the connecting opening 38; the cables are placed one by one into the cable slot 33, and the wire cores are extended to the connecting opening 38 through the wire core slot 37 until the wire cores abut against the top surface of the pins.

[0051] Start the dual-axis motor, and the two driving ends of the dual-axis motor drive the two rotating shafts 44 to rotate in the same direction at the same time, so that the eccentric wheel 4 rotates eccentrically, so that the eccentric wheel 4 drives the pushing arm 41 to swing back and forth in a curve. When the arc rack 42 moves up to engage with the linear rack 43, the arc rack 42 pushes the loading plate 3 to slide horizontally for a unit distance; when the arc rack 42 moves down until the arc rack 42 is out of engagement with the linear rack 43, the top of the inner wall of the guide notch 411 presses the top of the trigger rod 61 to move the trigger block 63 downward until the downward-moving trigger block 63 triggers the trigger member 62. Since the trigger member 62 is electrically connected to the pushing member 13, the pushing end of the pushing member 13 pushes the moving electrode rod 11 downward to weld and fix the wire core and the pin between the moving electrode rod 11 and the fixed electrode rod 12; after welding and fixing, the pushing member 13 drives the moving electrode rod 11 to reset; the cycle is repeated in sequence to complete the welding and fixing between the wire core and the pin one by one.

[0052] The embodiment of the present application also discloses a welding method of an automatic AC spot welding machine, comprising the following steps: S1: placing the chips one by one into the chip slots 34, and placing the two pins on each chip into the two pin slots 36 at corresponding positions, until the pins in the pin slots 36 extend to the connecting openings 38; S2: Place the cables one by one into the cable groove 33, and allow the wire core to extend through the wire core groove 37 to the connecting port 38, until the wire core abuts against the top surface of the pin; S3: starting the driving member, which drives the loading plate 3 to intermittently move toward the welding end close to the AC spot welding machine body 1; S4: When the trigger assembly is triggered, the pushing end of the pushing member 13 pushes the moving electrode rod 11 downward to weld and fix the wire core and the pin between the moving electrode rod 11 and the fixed electrode rod 12 .

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic AC spot welding machine, characterized in that: The AC spot welding machine comprises an AC spot welding machine body (1), a base (2) located at one side of the AC spot welding machine body (1), a loading plate (3) slidingly moved laterally on the top surface of the base (2), and a driving mechanism arranged on the base (2) and connected to the loading plate (3); the welding ends of the AC spot welding machine body (1) are a moving electrode rod (11) and a fixed electrode rod (12); a pushing member (13) is arranged on the AC spot welding machine body (1); the pushing end of the pushing member (13) is connected to the moving electrode rod (11) so that the moving electrode rod (11) can move in a direction close to or away from the fixed electrode rod (12), thereby welding the wire core and the pin located between the moving electrode rod (11) and the fixed electrode rod (12); and the driving mechanism drives the loading plate (3) to intermittently move towards the welding end close to the AC spot welding machine body (1).

2. An automatic AC spot welding machine according to claim 1, characterized in that: The driving mechanism comprises a driving member longitudinally mounted between two sides of the base (2), an eccentric wheel (4) located on one side of the base (2) and connected to the driving end of the driving member, a pushing arm (41) rotatably connected to the shaft of the eccentric wheel (4), an arc-shaped rack (42) fixedly connected to the top of the pushing arm (41), a linear rack (43) fixedly connected to the bottom surface of the loading plate (3) and meshing with the arc-shaped rack (42), and a trigger assembly arranged on the side of the base (2) and connected to the bottom end of the pushing arm (41), wherein the driving member drives the eccentric wheel (4) to rotate eccentrically, the eccentric wheel (4) drives the pushing arm (41) to swing in a lateral reciprocating curve, and the arc-shaped rack (42) drives the loading plate (3) to slide laterally via the linear rack (43).

3. An automatic AC spot welding machine according to claim 2, characterized in that: The trigger component is electrically connected to the pusher (13); when the push arm (41) triggers the trigger component, the trigger component triggers the pusher (13), so that the pusher (13) drives the moving electrode rod (11) to move in a direction close to the fixed electrode rod (12).

4. The automatic AC spot welding machine according to claim 2, characterized in that: The bottom end of the push arm (41) is provided with a guide notch (411), and the trigger assembly comprises a guide block (6) fixedly connected to the side of the base (2) and slidably connected to the guide notch (411), a trigger rod (61) slidably connected inside the guide block (6), and a trigger member (62) arranged inside the guide block (6); the bottom end of the trigger rod (61) is fixedly connected to a trigger block (63) slidably connected inside the guide block (6); the peripheral side of the trigger rod (61) is sleeved with an elastic member (64) located inside the guide block (6); the top end of the trigger rod (61) passes through the inside of the guide block (6) and extends to the outside of the guide block (6); and the trigger member (62) is electrically connected to the push member (13).

5. The automatic AC spot welding machine according to claim 2, characterized in that: A limiting component is provided on the side surface of the base (2) for limiting the vertical movement of the loading plate (3).

6. The automatic AC spot welding machine according to claim 5, characterized in that: The limiting assembly comprises a connecting arm (5) fixedly connected to one side of the base (2), a fixed block (51) fixedly connected to one end of the connecting arm (5) away from the base (2) and located above the loading plate (3), a limiting rod (52) vertically penetrating the fixed block (51) and slidably connected to the fixed block (51), a limiting strip (53) fixedly connected to the bottom of the peripheral side of the limiting rod (52), a reset member (54) sleeved on the peripheral side of the limiting rod (52), and a limiting ring (55) fixedly sleeved on the peripheral side of the limiting rod (52), wherein two limiting rings (55) are provided on the limiting rod (52), the bottom surface of the limiting ring (55) located at the top abuts against the top surface of the fixing block (51), the reset member (54) is fixedly connected between the bottom surface of the fixing block (51) and the top surface of the limiting ring (55) located at the bottom, and the limiting strip (53) plays a limiting role in the lifted loading plate (3).

7. The automatic AC spot welding machine according to claim 2, characterized in that: A plurality of cable grooves (33) distributed at equal intervals are provided on the top surface of the loading plate (3) and located on the side of the loading plate (3) away from the AC spot welding machine body (1); a plurality of chip grooves (34) distributed at equal intervals are provided on the top surface of the loading plate (3) and located on the side of the loading plate (3) close to the AC spot welding machine body (1); elastic blocks (35) having a limiting function are fixed in both the cable grooves (33) and the chip grooves (34).

8. The automatic AC spot welding machine according to claim 7, characterized in that: The top surface of the loading plate (3) is provided with a pin groove (36) connected to the chip groove (34), the top surface of the loading plate (3) is provided with a wire core groove (37) connected to the cable groove (33), and the top surface of the loading plate (3) is provided with a connecting port (38) connecting the pin groove (36) and the wire core groove (37).

9. The automatic AC spot welding machine according to claim 2, characterized in that: The driving member is a double-shaft motor, and both driving ends of the double-shaft motor are fixedly connected to a rotating shaft (44). The two rotating shafts (44) respectively penetrate the two sides of the base (2) and extend outside the base (2). The number of the eccentric wheels (4) is consistent with the number of the rotating shafts (44) and corresponds one to one. The rotating shaft (44) eccentrically penetrates the eccentric wheel (4) and is fixedly connected to the eccentric wheel (4).

10. A welding method for an automatic AC spot welding machine according to any one of claims 3 to 8, characterized in that: The following steps are involved: S1: placing the chips one by one into the chip slots (34), and placing the two pins on each chip into the two pin slots (36) at corresponding positions, until the pins in the pin slots (36) extend to the connecting openings (38); S2: placing the cables one by one into the cable groove (33), and allowing the wire core to extend through the wire core groove (37) to the connecting port (38), until the wire core abuts against the top surface of the pin; S3: starting the driving member, which drives the loading plate (3) to intermittently move toward the welding end close to the AC spot welding machine body (1); S4: When the trigger assembly is triggered, the pushing end of the pushing member (13) pushes the moving electrode rod (11) downward to weld and fix the wire core and the pin between the moving electrode rod (11) and the fixed electrode rod (12).

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