Piezoresistor welding tool based on electromagnetic stable adsorption structure

Abstract

The invention relates to the technical field of piezoresistor welding tools, in particular to a piezoresistor welding tool based on an electromagnetic stable adsorption structure, which comprises a base, a rotating seat is rotatably connected above the base, an electromagnetic adsorption seat is fixedly connected to the middle of the rotating seat, and a top frame is fixedly connected to the rotating seat. A laser welding device is installed on the top frame, a moving ring is arranged on the top frame, a plurality of centering mechanisms are arranged on the top frame in a rotating connection mode, a wiping plate is arranged above one end of the rotating base in a sliding fit mode, and a transmission mechanism is arranged below one end of the rotating base in a sliding fit mode. According to the annular piezoresistor welding device, accurate adjustment can be conducted according to annular piezoresistors of different sizes, so that electromagnetic stable adsorption welding is conducted on the annular piezoresistors, and compared with a traditional clamping mode, physical contact with elements is reduced, production efficiency is improved, element damage is reduced, and welding quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of varistor welding tooling, and in particular to a varistor welding tooling based on an electromagnetic stable adsorption structure. Background Art

[0002] A varistor welding fixture is a tool or device specifically designed for welding varistors, such as ring varistors. Varistors are commonly used for circuit protection and voltage stabilization, and are crucial in electronic devices. Therefore, their welding requires high precision. The design and use of welding fixtures are crucial to ensuring welding quality and improving production efficiency.

[0003] The document with the prior art publication number CN216298383U provides a chip welding tool for thermal pressure-sensitive resistor processing. By using accessories such as positioning rods, sliders, slide grooves, springs and rotating shafts, the positioning rods can be driven to move inside the positioning grooves. The positioning rods that are separated from the positioning grooves can cooperate with the action of the rotating shaft to realize the rotation of the placement plate, thereby meeting the angle adjustment of the placement plate and the workpiece placed inside, thereby improving the processing efficiency. The positioning rods can achieve the function of positioning and fixing the placement plate when they rebound through the spring.

[0004] Existing techniques use a clamping assembly to position and secure the varistor. However, when clamping and welding annular varistors, the material of the annular varistor is relatively fragile. Excessive or uneven clamping force can cause the component to crack or damage. If the clamping force is insufficient, the annular varistor may shift or become loose during welding, affecting weld quality. Furthermore, clamping and welding can obstruct the welding position, impacting welding efficiency.

[0005] In summary, the prior art lacks a technology for fixing and welding annular varistors using electromagnetic adsorption. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the background technology and propose a varistor welding tool based on an electromagnetic stable adsorption structure.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is: a varistor welding tool based on an electromagnetic stable adsorption structure, including a base, a rotating seat is rotatably connected above the base, an electromagnetic adsorption seat is fixedly connected to the middle of the rotating seat, a top frame is fixedly connected to the rotating seat, a laser welding equipment is installed on the top frame, a moving ring is provided on the top frame, and multiple centering mechanisms are rotatably connected on the top frame, a wiping plate is slidably provided above one end of the rotating seat, and a transmission mechanism is slidably provided below one end of the rotating seat.

[0008] Preferably, a positioning groove is provided on one side of the base, a positioning block is movably inserted into the positioning groove, and a material receiving box is fixedly connected to one end of the positioning block.

[0009] Preferably, a hydraulic rod is rotatably connected to the lower side of the rotating seat, and the other end of the hydraulic rod is rotatably connected to the base. One side of the rotating seat is symmetrically structured with two sliding grooves.

[0010] Preferably, an annular varistor is placed on the electromagnetic adsorption seat, and a toothed disc is rotatably connected to the inner wall of the electromagnetic adsorption seat, one end of the toothed disc extends through the inner wall of the electromagnetic adsorption seat to the outside and is fixedly connected to a motor, and the motor is fixedly connected to the electromagnetic adsorption seat, and a plurality of threaded rods are rotatably connected to the inner wall of the electromagnetic adsorption seat, and a transmission wheel is fixedly connected to one end of the threaded rod, and the transmission wheel is meshed with the toothed disc for transmission, and a connecting block is threadedly connected to the outer wall of the threaded rod, and an electromagnet is fixedly connected to the connecting block, and the top of the electromagnet is in sliding contact with the inner wall of the electromagnetic adsorption seat.

[0011] Preferably, an electric push rod is fixedly connected to the bottom of the moving ring, one end of the electric push rod is fixedly connected to the top frame, and a plurality of adjustment racks are fixedly connected to the bottom of the moving ring in an annular structure, and the adjustment racks are slidingly fitted with the top frame.

[0012] Preferably, the centering mechanism includes a rotating rod, the top end of the rotating rod is rotatably connected to the top frame, the top end of the rotating rod is fixedly connected to an adjusting wheel, the adjusting wheel is meshed with the adjusting rack for transmission, a push rod is slidingly fitted on the inner wall of the bottom end of the rotating rod, an inclined surface is provided on one side of the push rod, the push rod is slidingly contacted with the rotating seat and the electromagnetic adsorption seat, a spring is fixedly connected to the inner end of the push rod, and the other end of the spring is fixedly connected to the inner wall of the rotating rod.

[0013] Preferably, a sponge pad is fixedly connected to the lower surface of the wiping plate, two push rod groups are rotatably connected to the wiping plate, an L-shaped rod is fixedly connected to the other end of the push rod group, and the L-shaped rod is rotatably connected to the rotating seat.

[0014] Preferably, the transmission mechanism includes a triangular block, which is slidably matched with the rotating seat. A contact rod is fixedly connected to one side of the triangular block, and one end of the contact rod is movably contacted with one side of the base.

[0015] Preferably, guide rods are provided on both sides of the triangular block in sliding contact, a connecting rod is fixedly connected to the guide rod, the other end of the connecting rod is rotatably connected to the bottom end of the L-shaped rod, a slider is rotatably connected to the connecting rod, the slider is slidably matched with the inner wall of the slide groove, a tension spring is fixedly connected to one side of the slider, and the other end of the tension spring is fixedly connected to the inner wall of the slide groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By arranging multiple electromagnets with adjustable positions in a ring structure within the electromagnetic adsorption base, precise adjustments can be made according to the annular varistors of different sizes, thereby performing electromagnetic stable adsorption welding on the annular varistors. This can achieve precise positioning, flexible adjustment, and an efficient and stable welding process. Compared with traditional clamping methods, this reduces physical contact with components, improves production efficiency, reduces component damage, and improves welding quality. By setting a rotatable rotating seat and a centering mechanism, the ring varistor can be quickly unloaded and quickly positioned for electromagnetic adsorption, which can greatly improve production efficiency, enhance welding quality, and enhance the degree of automation of the production line. It also has flexible adaptability and can adapt to the size of the ring varistor. It not only reduces manual operation, reduces operating risks and costs, but also effectively improves the positioning accuracy and welding stability of the components. It is especially suitable for large-scale, high-precision production needs. By setting up a wiping plate and a transmission mechanism, the wiping plate can be driven to move by the transmission mechanism while the rotating seat rotates to unload the material, thereby realizing automatic cleaning of the electromagnetic adsorption seat, effectively ensuring the stability of the electromagnetic adsorption force, reducing the impact of surface contamination on the adsorption effect, and improving welding quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a varistor welding tool based on an electromagnetic stable adsorption structure according to the present invention; Figure 2 This is a schematic diagram of the expanded base structure of a varistor welding tool based on an electromagnetic stable adsorption structure according to the present invention; Figure 3 This is a schematic diagram of the structure of a rotating seat of a varistor welding tool based on an electromagnetic stable adsorption structure according to the present invention; Figure 4 This is a partial cross-sectional schematic diagram of the electromagnetic adsorption seat structure of a varistor welding tool based on an electromagnetic stable adsorption structure of the present invention; Figure 5 This is a schematic diagram of the movable ring structure of a varistor welding tool based on an electromagnetic stable adsorption structure according to the present invention; Figure 6It is a partial cross-sectional expanded schematic diagram of the centering mechanism structure of a varistor welding tool based on an electromagnetic stable adsorption structure according to the present invention; Figure 7 This is a schematic diagram of the structure of a wiping plate of a varistor welding tool based on an electromagnetic stable adsorption structure according to the present invention; Figure 8 The figure is a schematic diagram of the transmission mechanism structure of a varistor welding tool based on an electromagnetic stable adsorption structure according to the present invention.

[0018] 1. Base; 2. Rotating seat; 3. Electromagnetic adsorption seat; 4. Top frame; 5. Laser welding equipment; 6. Moving ring; 7. Centering mechanism; 8. Wiping plate; 9. Transmission mechanism; 101. Positioning groove; 102. Positioning block; 103. Material receiving box; 201. Hydraulic rod; 202. Slide; 301. Ring varistor; 302. Toothed disc; 303. Motor; 304. Threaded rod; 305. Transmission wheel; 306. Connecting block; 307. Electromagnet; 601. Electric push rod; 602. Adjusting rack; 701. Rotating rod; 702. Adjusting wheel; 703. Push rod; 704. Spring; 801. Push rod group; 802. L-shaped rod; 901. Triangular block; 902. Contact rod; 903. Guide rod; 904. Connecting rod; 905. Slider; 906. Tension spring. DETAILED DESCRIPTION

[0019] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0020] like Figures 1-8 The shown embodiment is a varistor welding tool based on an electromagnetic stable adsorption structure, comprising a base 1, a rotating seat 2 is rotatably connected above the base 1, an electromagnetic adsorption seat 3 is fixedly connected to the middle of the rotating seat 2, a top frame 4 is fixedly connected to the rotating seat 2, a laser welding device 5 is installed on the top frame 4, a moving ring 6 is provided on the top frame 4, and a plurality of centering mechanisms 7 are rotatably connected to the top frame 4, a wiping plate 8 is slidably provided above one end of the rotating seat 2, and a transmission mechanism 9 is slidably provided below one end of the rotating seat 2.

[0021] like Figure 2 As shown, a positioning groove 101 is provided on one side of the base 1, and a positioning block 102 is movably inserted into the positioning groove 101, and a material receiving box 103 is fixedly connected to one end of the positioning block 102. The positioning groove 101 facilitates the limiting and fixing of the material receiving box 103.

[0022] like Figure 3As shown, a hydraulic rod 201 is rotatably connected to the lower side of the rotating seat 2, and the other end of the hydraulic rod 201 is rotatably connected to the base 1. One side of the rotating seat 2 is symmetrically structured with two sliding grooves 202.

[0023] like Figure 4 As shown, an annular varistor 301 is placed on the electromagnetic adsorption base 3. A toothed disc 302 is rotatably connected to the inner wall of the electromagnetic adsorption base 3. One end of the toothed disc 302 extends through the inner wall of the electromagnetic adsorption base 3 and is fixedly connected to a motor 303. The motor 303 is fixedly connected to the electromagnetic adsorption base 3. Multiple threaded rods 304 are rotatably connected to the inner wall of the electromagnetic adsorption base 3. One end of the threaded rods 304 is fixedly connected to a transmission wheel 305, which meshes with the toothed disc 302 for transmission. The outer wall of the threaded rods 304 is threadedly connected to a connecting block 306. An electromagnet 307 is fixedly connected to the connecting block 306. The top end of the electromagnet 307 is in sliding contact with the inner wall of the electromagnetic adsorption base 3. The electromagnet 307 is model PA-2012 and can provide uniform and stable adsorption force, suitable for use in welding tooling. The motor 303 is used to drive the connected toothed disc 302 to rotate, so that the toothed disc 302 drives the threaded rod 304 connected to the transmission wheel 305 to rotate. At this time, the threaded rod 304 will drive the connecting block 306 to move, so that the electromagnet 307 on the connecting block 306 moves to a position corresponding to the size of the annular varistor 301.

[0024] By arranging multiple electromagnets 307 with adjustable positions in a ring structure within the electromagnetic adsorption seat 3, precise adjustments can be made according to the annular varistors 301 of different sizes, thereby performing electromagnetically stable adsorption welding on the annular varistor 301, which can achieve precise positioning, flexible adjustment, and an efficient and stable welding process. Compared with the traditional clamping method, it reduces physical contact with the components, improves production efficiency, reduces component damage, and improves welding quality.

[0025] like Figure 5 As shown, an electric push rod 601 is fixedly connected to the bottom of the movable ring 6, and one end of the electric push rod 601 is fixedly connected to the top frame 4. The bottom of the movable ring 6 is fixedly connected to a plurality of adjustment racks 602 in an annular structure. The adjustment racks 602 are arranged to slide through the top frame 4. The electric push rod 601 drives the adjustment racks 602 to move upward, and at this time, the adjustment racks 602 drive the rotating rod 701 connected to the adjustment wheel 702 to rotate.

[0026] like Figure 6As shown, the centering mechanism 7 includes a rotating rod 701, the top of which is rotatably connected to the top frame 4. An adjustment wheel 702 is fixedly connected to the top of the rotating rod 701, and the adjustment wheel 702 is meshed with the adjustment rack 602 for transmission. A push rod 703 is slidably provided on the inner wall of the bottom end of the rotating rod 701. One side of the push rod 703 is provided with an inclined surface, and the push rod 703 is provided with a sliding contact with the rotating seat 2 and the electromagnetic adsorption seat 3. The inner end of the push rod 703 is fixedly connected to a spring 704, and the other end of the spring 704 is fixedly connected to the inner wall of the rotating rod 701. The push rod 703 has an inclined surface on one side so that it can automatically retract when it rotates and contacts the rotating seat 2. When the rotating rod 701 rotates, it drives the push rod 703 to rotate. Then, under the action of the spring 704, the outer end of the push rod 703 always maintains contact with the rotating seat 2 and the electromagnetic adsorption seat 3. The multiple push rods 703 push the annular varistor 301 to the center of the electromagnetic adsorption seat 3.

[0027] like Figure 7 As shown, a sponge pad is fixedly connected to the lower surface of the wiping plate 8, and two push rod groups 801 are rotatably connected to the wiping plate 8. The other end of the push rod group 801 is fixedly connected to an L-shaped rod 802. The L-shaped rod 802 is rotatably connected to the rotating base 2. When the rotating base 2 rotates, the contact rod 902 is no longer in contact with the base 1. Under the action of the tension spring 906, the slider 905 is driven to move, so that the slider 905 can drive the connecting rod 904, so that the connecting rod 904 drives the push rod group 801 connected to the L-shaped rod 802 to rotate, so that the push rod group 801 drives the wiping plate 8 to move.

[0028] like Figure 8 As shown, the transmission mechanism 9 includes a triangular block 901, which is slidably matched with the rotating seat 2. A contact rod 902 is fixedly connected to one side of the triangular block 901, and one end of the contact rod 902 is movably contacted with one side of the base 1.

[0029] Guide rods 903 are provided on both sides of the triangular block 901 for sliding contact. A connecting rod 904 is fixedly connected to the guide rod 903. The other end of the connecting rod 904 is rotatably connected to the bottom end of the L-shaped rod 802. A slider 905 is rotatably connected to the connecting rod 904. The slider 905 slides in cooperation with the inner wall of the slide groove 202. A tension spring 906 is fixedly connected to one side of the slider 905. The other end of the tension spring 906 is fixedly connected to the inner wall of the slide groove 202. When the rotating seat 2 rotates to reset, the contact rod 902 contacts the base 1, thereby pushing the triangular block 901 connected to the contact rod 902 upward, so that the inclined surface of the triangular block 901 contacts the guide rod 903, thereby pushing the slider 905 connected to the guide rod 903 to move, thereby driving the wiping plate 8 to reset through the connecting rod 904.

[0030] Working principle: When the annular varistor 301 needs to be welded, the position of the electromagnet 307 is first adjusted according to the size of the annular varistor 301. The motor 303 drives the connected toothed disc 302 to rotate, so that the toothed disc 302 drives the threaded rod 304 connected to the transmission wheel 305 to rotate. At this time, the threaded rod 304 drives the connecting block 306 to move, so that the electromagnet 307 on the connecting block 306 moves to the position corresponding to the size of the annular varistor 301. Then, after the annular varistor 301 is placed on the electromagnetic adsorption seat 3, the electric push rod 601 is used to drive the adjustment rack 602 to move upward. At this time, the adjustment rack 602 will drive the rotating rod 701 connected to the adjusting wheel 702 to rotate, so that the rotating rod 701 can drive the push rod 703 to rotate. Then, under the action of the spring 704, the outer end of the push rod 703 is always kept in contact with the rotating seat 2 and the electromagnetic adsorption seat 3. The multiple push rods 703 will push the annular varistor 301 to move to the center of the electromagnetic adsorption seat 3, and then the electromagnet 307 generates a suitable magnetic field to adsorb and fix the annular varistor 301. Then, the rotating rod 701 is reversed and moved away, and the annular varistor 301 is welded using the laser welding equipment 5; After welding is completed, the hydraulic rod 201 is used to drive the rotating base 2 to rotate, so that the annular varistor 301 on the rotating base 2 can slide into the receiving box 103 for collection; At the same time, when the rotating seat 2 rotates, the contact rod 902 does not contact the base 1. Under the action of the tension spring 906, the slider 905 will be driven to move, so that the slider 905 can drive the connecting rod 904, so that the connecting rod 904 drives the push rod group 801 connected to the L-shaped rod 802 to rotate, so that the push rod group 801 drives the wiping plate 8 to move, and automatically cleans the surface of the electromagnetic adsorption seat 3. When the rotating seat 2 rotates and resets, the contact rod 902 contacts the base 1, thereby pushing the triangular block 901 connected to the contact rod 902 to move upward, so that the inclined surface of the triangular block 901 contacts the guide rod 903, thereby pushing the slider 905 connected to the guide rod 903 to move, thereby driving the wiping plate 8 to reset through the connecting rod 904.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A varistor welding tool based on an electromagnetically stable adsorption structure, comprising a base (1), characterized in that: A rotating seat (2) is rotatably connected above the base (1), an electromagnetic adsorption seat (3) is fixedly connected to the middle of the rotating seat (2), a top frame (4) is fixedly connected to the rotating seat (2), a laser welding device (5) is installed on the top frame (4), a moving ring (6) is provided on the top frame (4), and a plurality of centering mechanisms (7) are rotatably connected to the top frame (4), a wiping plate (8) is slidably provided above one end of the rotating seat (2), and a transmission mechanism (9) is slidably provided below one end of the rotating seat (2).

2. The varistor welding tool based on the electromagnetic stable adsorption structure according to claim 1, characterized in that: A positioning groove (101) is provided on one side of the base (1), a positioning block (102) is movably inserted into the positioning groove (101), and a material receiving box (103) is fixedly connected to one end of the positioning block (102).

3. The varistor welding tool based on the electromagnetic stable adsorption structure according to claim 1, characterized in that: A hydraulic rod (201) is rotatably connected to the lower side of the rotating seat (2), and the other end of the hydraulic rod (201) is rotatably connected to the base (1). One side of the rotating seat (2) is symmetrically structured with two sliding grooves (202).

4. The varistor welding tool based on the electromagnetic stable adsorption structure according to claim 1, characterized in that: An annular varistor (301) is placed on the electromagnetic adsorption seat (3); a toothed disc (302) is rotatably connected to the inner wall of the electromagnetic adsorption seat (3); one end of the toothed disc (302) passes through the inner wall of the electromagnetic adsorption seat (3) and extends to the outside and is fixedly connected to a motor (303); the motor (303) is fixedly connected to the electromagnetic adsorption seat (3); a plurality of threaded rods (304) are rotatably connected to the inner wall of the electromagnetic adsorption seat (3); one end of the threaded rod (304) is fixedly connected to a transmission wheel (305); the transmission wheel (305) is meshed with the toothed disc (302) for transmission; a connecting block (306) is threadedly connected to the outer wall of the threaded rod (304); an electromagnet (307) is fixedly connected to the connecting block (306); the top end of the electromagnet (307) is in sliding contact with the inner wall of the electromagnetic adsorption seat (3).

5. The varistor welding tool based on the electromagnetic stable adsorption structure according to claim 1, characterized in that: An electric push rod (601) is fixedly connected to the bottom of the moving ring (6), one end of which is fixedly connected to the top frame (4). A plurality of adjustment racks (602) are fixedly connected to the bottom of the moving ring (6) in an annular structure, and the adjustment racks (602) are slidably fitted with the top frame (4).

6. The varistor welding tool based on the electromagnetic stable adsorption structure according to claim 5, characterized in that: The centering mechanism (7) comprises a rotating rod (701), the top end of the rotating rod (701) is rotatably connected to the top frame (4), the top end of the rotating rod (701) is fixedly connected to an adjusting wheel (702), the adjusting wheel (702) is meshed with the adjusting rack (602) for transmission, the inner wall of the bottom end of the rotating rod (701) is slidably matched with a push rod (703), one side of the push rod (703) is provided with an inclined surface, the push rod (703) is in sliding contact with the rotating seat (2) and the electromagnetic adsorption seat (3), the inner end of the push rod (703) is fixedly connected to a spring (704), and the other end of the spring (704) is fixedly connected to the inner wall of the rotating rod (701).

7. The varistor welding tool based on the electromagnetic stable adsorption structure according to claim 3, characterized in that: A sponge pad is fixedly connected to the lower surface of the wiping plate (8), and two push rod groups (801) are rotatably connected to the upper surface of the wiping plate (8). An L-shaped rod (802) is fixedly connected to the other end of the push rod group (801), and the L-shaped rod (802) is rotatably connected to the rotating seat (2).

8. The varistor welding tool based on the electromagnetic stable adsorption structure according to claim 7, characterized in that: The transmission mechanism (9) comprises a triangular block (901), the triangular block (901) being arranged in sliding cooperation with the rotating seat (2), a contact rod (902) being fixedly connected to one side of the triangular block (901), and one end of the contact rod (902) being arranged in movable contact with one side of the base (1).

9. The varistor welding tool based on the electromagnetic stable adsorption structure according to claim 8, characterized in that: Guide rods (903) are provided on both sides of the triangular block (901) in sliding contact, a connecting rod (904) is fixedly connected to the guide rod (903), the other end of the connecting rod (904) is rotatably connected to the bottom end of the L-shaped rod (802), a slider (905) is rotatably connected to the connecting rod (904), the slider (905) is slidably matched with the inner wall of the slide groove (202), a tension spring (906) is fixedly connected to one side of the slider (905), and the other end of the tension spring (906) is fixedly connected to the inner wall of the slide groove (202).

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