A touch blade fuse piece butt welding machine

Abstract

This invention discloses a contact blade and fusion piece welding machine, comprising a contact blade fixing seat, a fusion piece fixing seat, a loading and unloading mechanism, a welding electrode, and a welding alignment mechanism. The contact blade fixing seat is used to fix the contact blade; the fusion piece fixing seat is used to fix the fusion piece; the loading and unloading mechanism is used to load the contact blade and fusion piece to the contact blade fixing seat and the fusion piece fixing seat respectively, and to unload the welded contact blade and fusion piece; the welding electrode is used to weld and fix the contact blade and fusion piece; the welding alignment mechanism is used to drive the contact blade fixing seat and / or the fusion piece fixing seat so that the contact blade on the contact blade fixing seat and the fusion piece on the fusion piece fixing seat are close to each other, and to drive the welding electrode to press the fusion piece tightly onto the contact blade. This invention can automatically weld and fix the contact blade and fusion piece, improving the efficiency of contact blade and fusion piece welding assembly. During the assembly process, the fusion piece is not easily deformed, resulting in better finished product quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, in particular to a contact blade fusing piece butt welding machine. BACKGROUND

[0002] The fuse is also called fuse body or fuse wire, which is a kind of electrical appliance that can make the fuse body melt and disconnect the circuit with the heat generated by itself when the current exceeds the specified value. The fuse is widely used in high and low voltage power distribution systems, control systems and electrical equipment, and is a commonly used protection device.

[0003] The fuse has various structural forms. A current contact blade fuse includes a blade-shaped fuse body and two contact blades welded on both sides of the fuse body, i.e. a fusing piece and a contact blade. As shown in the drawings, the contact blade includes a first connecting part for butt joint with the fusing piece and a second connecting part for butt joint with the circuit to be protected. The fusing piece is in the shape of a blade and has two folding parts formed by folding the two sides vertically. Figure 1 As shown in the drawings, the contact blade includes a first connecting part for butt joint with the fusing piece and a second connecting part for butt joint with the circuit to be protected. The fusing piece is in the shape of a blade and has two folding parts formed by folding the two sides vertically. Figure 2 Currently, the fuse is mainly assembled and produced manually. During assembly, the fusing piece and the two contact blades are manually taken and placed, the two contact blades are arranged oppositely, and the fusing piece is placed between the two contact blades so that the two folding parts of the fusing piece are respectively close to the first connecting parts of the two contact blades. Then, the first connecting parts and the folding parts are welded to integrate the contact blade and the fusing piece. Manual assembly is time-consuming and laborious. Moreover, during the assembly process, the fusing piece is easily deformed by manual taking and placing due to its thinness, which affects the quality of the finished product. In addition, since the fusing pieces are usually arranged in multiple pieces with small spacing between the fusing pieces, it is inconvenient to manually operate the fusing pieces during the steps of loading, aligning and welding, and the fusing pieces are easily deformed during operation. SUMMARY

[0004] The present application aims to provide a contact blade fusing piece butt welding machine to realize automatic welding of the contact blade and the fusing piece.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0006] A contact blade fusing piece butt welding machine includes a contact blade fixing seat, a fusing piece fixing seat, a feeding and discharging mechanism, a welding electrode and a welding alignment mechanism. The contact blade fixing seat is used to fix the contact blade. The fusing piece fixing seat is used to fix the fusing piece. The feeding and discharging mechanism is used to feed the contact blade and the fusing piece to the contact blade fixing seat and the fusing piece fixing seat respectively and to discharge the welded contact blade and fusing piece. The welding electrode is used to weld the fixed contact blade and fusing piece. The welding alignment mechanism is used to drive the contact blade fixing seat and / or the fusing piece fixing seat so that the contact blade on the contact blade fixing seat and the fusing piece on the fusing piece fixing seat are close to each other, and to drive the welding electrode to press the fusing piece tightly on the contact blade.

[0007] Furthermore, the contact blade fixing seat is provided with an insertion groove and a limiting hole, and a first pressing device is provided on the side. The insertion groove allows the contact blade to be inserted, and the limiting hole communicates with the insertion groove. The first pressing device includes a pressing block that is movably disposed in the limiting hole along the axial direction of the limiting hole. The pressing block can partially penetrate the insertion groove and press and fix the contact blade in the insertion groove.

[0008] Furthermore, the molten sheet fixing seat includes a second clamping device and two clamping blocks, the two clamping blocks are slidably connected to each other, and a gap is left between the two clamping blocks for inserting the molten sheet. The second clamping device is used to push the clamping blocks closer to each other to clamp and fix the molten sheet.

[0009] Furthermore, the welding alignment mechanism includes at least two linear drive devices, which drive two or three of the contact blade holder, the fusion plate holder, and the welding electrode to make the contact blade on the contact blade holder and the fusion plate on the fusion plate holder close to each other, while making the welding electrode face the position to be welded on the fusion plate.

[0010] Furthermore, at least two of the fusion strip holders are provided and arranged one by one in the horizontal direction. The welding alignment mechanism also includes at least two lifting devices, each of which corresponds to one of the fusion strip holders and is driven and connected to the fusion strip holder. At least one of the linear driving devices is driven and connected to the lifting devices, and the driving direction is consistent with the arrangement direction of the fusion strip holders.

[0011] Furthermore, the welding alignment mechanism also includes a flipping device, which drives the contact blade fixing seat to rotate, thereby causing the molten sheet welded on the contact blade to flip.

[0012] Furthermore, the contact blade holders are arranged opposite each other in pairs, and there is a gap between the opposite contact blade holders to accommodate the fusion strip and allow it to be placed close to the contact blade.

[0013] Furthermore, the welding alignment mechanism includes alignment grippers, the welding electrodes are arranged back to back in pairs, the back-to-back welding electrodes are fixedly connected to the same alignment gripper, and the spacing is adjusted by the alignment gripper.

[0014] Furthermore, the loading and unloading mechanism includes a three-dimensional driving mechanism, a feeding platform, and multiple picking grippers. The feeding platform is used to place the contact blade and molten sheet before and after welding. The picking grippers are used to pick up and place the contact blade and molten sheet. The three-dimensional driving mechanism drives the picking grippers to move back and forth between the contact blade fixing seat, the molten sheet fixing seat, and the feeding platform.

[0015] Furthermore, the loading and unloading mechanism also includes a platform shifting device, which corresponds one-to-one with the unloading platform and is driven and connected to the unloading platform. The driving direction of each platform shifting device is the same.

[0016] The present invention has the following beneficial effects:

[0017] In use, the present invention can be used to load the contact blade and the molten sheet into the contact blade fixing seat and the molten sheet fixing seat respectively through the loading and unloading mechanism. Then, the contact blade placed on the contact blade fixing seat and the molten sheet placed on the molten sheet fixing seat are aligned and brought close together by the welding alignment mechanism. Then, the welding electrode is driven to press the folded part of the molten sheet onto the first connecting part of the contact blade. The welding electrode then welds and fixes the contact blade and the molten sheet together, thereby achieving the purpose of automatic welding of the contact blade and the molten sheet and improving the welding efficiency of the contact blade and the molten sheet. Attached Figure Description

[0018] Figure 1 This is a schematic diagram (I) of the finished product structure of the welded contact blade and fusion plate of the present invention.

[0019] Figure 2 This is a schematic diagram (II) of the finished product structure of the welded contact blade and fusion plate of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 4 This is a front view structural diagram of the present invention.

[0022] Figure 5 This is a top view of the structure of the present invention.

[0023] Figure 6 This is a side view of the structure of the present invention.

[0024] Figure 7 This is a schematic diagram of the contact blade fixing base structure of the present invention.

[0025] Figure 8 This is a schematic diagram of the connection structure between the knife fixing seat and the welding alignment mechanism of the present invention.

[0026] Figure 9 This is a schematic diagram of the fuse holder structure of the present invention.

[0027] Figure 10 This is a schematic diagram of the connection structure between the fusion plate fixing seat and the welding alignment mechanism of the present invention.

[0028] Figure 11 This is a schematic diagram of the connection structure between the welding electrode and the welding alignment mechanism of the present invention.

[0029] Figure 12 for Figure 11 A magnified schematic diagram of part A of the structure.

[0030] Figure 13 This is a schematic diagram of the alignment state of the present invention (I).

[0031] Figure 14 This is a schematic diagram of the alignment state of the present invention (II).

[0032] Explanation of main component symbols: 1. Contact blade; 11. First connecting part; 12. Second connecting part; 2. Fusion sheet; 21. Folding part; 3. Contact blade fixing seat; 31. Insertion slot; 32. Limiting hole; 33. First clamping device; 331. Pressure block; 4. Fusion sheet fixing seat; 41. Second clamping device; 42. Clamping block; 421. Sheet-shaped part; 5. Welding electrode; 6. Welding alignment mechanism; 61. Linear drive device; 611. First linear drive device; 612. Second linear drive device; 62. Lifting device; 63. Tilting device; 64. Alignment gripper; 7. Loading and unloading mechanism; 71. Three-dimensional drive mechanism; 72. Unloading platform; 73. Picking gripper; 74. Material table shifting device. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] like Figures 3-6 As shown, this invention discloses a contact blade welding machine, including a contact blade fixing seat 3, a welding sheet fixing seat 4, a loading and unloading mechanism 7, a welding electrode 5, and a welding alignment mechanism 6. The contact blade fixing seat 3 is used to place and fix the contact blade 1 to be welded; the welding sheet fixing seat 4 is used to place and fix the welding sheet 2 to be welded; the loading and unloading mechanism 7 is used to load the contact blade 1 to be welded onto the contact blade fixing seat 3, load the welding sheet 2 to be welded onto the welding sheet fixing seat 4, and unload the finished product after the contact blade 1 and welding sheet 2 are welded together; the welding electrode 5 is a columnar electrode used to form a weld point between the contact surfaces of the contact blade 1 and the welding sheet 2, thereby welding and fixing the contact blade 1 and the welding sheet 2; the welding alignment mechanism 6 is used to... After the sheet 2 is loaded, the contact knife fixing seat 3 and / or the molten sheet fixing seat 4 are driven so that the contact knife 1 on the contact knife fixing seat 3 and the molten sheet 2 on the molten sheet fixing seat 4 come into close contact with each other. That is, the folded part 21 on the molten sheet 2 is aligned with and close to the first connecting part 11 on the contact knife 1. At the same time, after the contact knife 1 and the molten sheet 2 are aligned and close to each other, the welding electrode 5 is driven to move to the side of the molten sheet 2 that is away from the corresponding contact knife 1, and the welding electrode 5 is pressed against the point to be welded on the molten sheet 2, pressing the molten sheet 2 on the contact knife 1 for welding.

[0035] Specifically, the loading and unloading mechanism 7 includes a three-dimensional drive mechanism 71, a feeding platform 72, and multiple picking grippers 73. In this mechanism, the feeding platform 72 supports a tray containing the contact blade 1, the molten sheet 2, and the welded finished product. The picking grippers 73 are used to pick up and place the contact blade 1 and the molten sheet 2. The three-dimensional drive mechanism 71 drives the picking grippers 73 to move back and forth between the contact blade fixing seat 3, the molten sheet fixing seat 4, and the feeding platform 72. Each feeding platform 72 corresponds to a different workpiece or finished product and is arranged along one driving direction of the three-dimensional drive mechanism 71. Each platform has a platform shifting device 74 at its bottom, which corresponds to and drives the feeding platform 72. The driving direction of each platform shifting device 74 is consistent with the other driving direction of the three-dimensional drive mechanism 71. The loading and unloading mechanism 7 can grab two contact blades 1 and multiple molten sheets 2 at the same time during loading. After loading, the material tray position can be changed by the material tray shifting device 74 driving the unloading platform 72, thereby driving the next batch of contact blades 1 and molten sheets 2 to wait for loading. The loading efficiency is high.

[0036] After being loaded, the contact blade 1 is fixedly inserted into the contact blade holder 3, such as... Figure 7 , 8 As shown, the contact knife fixing base 3 has an insertion slot 31 and a limiting hole 32, and a first clamping device 33 is provided on the side. The shape of the insertion slot 31 matches the shape of the second connecting part 12 of the contact knife 1, allowing the second connecting part 12 of the contact knife 1 to be inserted. After the contact knife 1 is inserted, the first connecting part 11 on the contact knife 1 is exposed to mate with the fuse 2. One end of the limiting hole 32 is connected to the insertion slot 31, and the other end is directly opposite the first clamping device 33. The first clamping device 33 includes a pressure block 331 driven by air pressure. The pressure block 331 is disposed in the limiting hole 32, and the shape of the pressure block 331 matches the shape of the limiting hole 32. It can slide axially along the limiting hole 32 under air pressure. When the pressure block 331 slides towards the insertion slot 31, the pressure block 331 can partially enter the insertion slot 31. When the contact blade 1 is inserted in the insertion slot 31, the contact blade 1 can be pressed and fixed in the insertion slot 31 to wait for welding, thus preventing the contact blade 1 from shifting during the alignment and welding process.

[0037] Similarly, such as Figure 9 , 10 As shown, the fusible link holder 4 includes a pneumatically driven second clamping device 41 and two clamping blocks 42. Each clamping block 42 is provided with a sheet-like portion 421 that matches the shape of the fusible link 2. The two clamping blocks 42 are slidably connected to each other, and a gap is left between the two sheet-like portions 421 for the side of the fusible link 2 to be inserted. The second clamping device 41 also has a pneumatically driven pressure block, and the pressure block is directly opposite one of the clamping blocks 42. When the pressure block on the second clamping device 41 moves, it can push the clamping blocks 42 closer together and clamp and fix the fusible link 2.

[0038] After being loaded and fixed, the contact blade 1 and the molten sheet 2 are aligned and brought close together by the welding alignment mechanism 6. This welding alignment mechanism 6 includes at least two linear drive devices 61. The linear drive devices 61 drive two or three of the contact blade fixing seat 3, the molten sheet fixing seat 4, and the welding electrode 5 to bring the contact blade 1 on the contact blade fixing seat 3 and the molten sheet 2 on the molten sheet fixing seat 4 close together before welding, while simultaneously ensuring that the welding electrode 5 is aligned with the position to be welded on the molten sheet 2. After welding, the contact blade fixing seat 3, the molten sheet fixing seat 4, and the welding electrode 5 are dispersed to facilitate unloading and subsequent loading. In this embodiment, the linear drive device 61 includes a first linear drive device 611 driving the molten sheet fixing seat 4 and a second linear drive device 612 driving the welding electrode 5. The driving directions of the first linear drive device 611 and the second linear drive device 612 are consistent. The positions of the contact blade 1 fixing seat, the molten sheet 2 fixing seat, and the welding electrode 5 are arranged according to the driving direction of the linear drive device 61 for rapid assembly and dispersal. Correspondingly, the positions of the knife holder 3, the fusion plate holder 4, and the welding electrode 5 are arranged according to the driving direction of the linear drive device 61.

[0039] Since contact blades 1 need to be welded to both sides of the fusion strip 2, several pairs of contact blade fixing seats 3 are arranged opposite each other. A gap is left between any pair of opposite contact blade fixing seats 3 to accommodate the fusion strip 2, and the first connecting parts 11 of the fixed contact blades 1 are positioned opposite each other. The size of this gap matches the distance between the two contact blades 1 after welding; that is, after the fusion strip 2 is inserted, the folded parts 21 on both sides of the fusion strip 2 should be exactly close to the first connecting parts 11 of the two contact blades 1. The opposite arrangement of the contact blade fixing seats 3 in pairs facilitates one-time material loading and welding during processing, improving welding efficiency. Correspondingly, such as Figure 11 , 12 As shown, the welding alignment mechanism 6 also includes alignment grippers 64. Several pairs of welding electrodes 5 are arranged back-to-back in pairs. Any pair of back-to-back welding electrodes 5 is fixedly connected to the same alignment gripper 64, and the spacing is adjusted by the alignment gripper 64. Before aligning the molten sheet 2, any pair of welding electrodes 5 can reduce the spacing by using the corresponding alignment gripper 64, making it easier to enter between the two contact blade holders 3 fixed to the contact blades 1, and thus get close to the contact blades 1 to wait for welding. After alignment, the spacing can be widened by using the alignment gripper 64, thereby pressing the molten sheet 2.

[0040] Furthermore, since one contact blade 1 typically connects to multiple molten sheet 2 parts, at least two molten sheet fixing seats 4 are provided, arranged sequentially in a horizontal direction. The welding alignment mechanism 6 also includes at least two lifting devices 62, each corresponding to a molten sheet fixing seat 4 and driving the molten sheet fixing seat 4. At least one linear drive device 61, namely the first linear drive device 611, drives the lifting device 62, and the driving direction is consistent with the arrangement direction of the molten sheet fixing seats 4. In use, multiple molten sheets 2 can be loaded onto each molten sheet fixing seat 4 at once, and each molten sheet fixing seat 4 is driven sequentially by the first linear drive device 611 and the corresponding lifting device 62, thereby aligning the molten sheets 2 on the corresponding molten sheet fixing seat 4 with the contact blade 1 to be welded, performing alignment and welding operations one by one, and then welding and fixing them onto the contact blade 1, resulting in high welding efficiency. During welding, the molten sheets 2 are welded onto the contact blade 1 one by one from the inside out. When there are a large number of weld nuggets 2 to be welded, the welding alignment mechanism 6 is also equipped with a flipping device 63. The flipping device 63 drives the connected contact knife fixing seat 3 to rotate, thereby causing the weld nuggets 2 welded on the contact knife 1 to rotate 180° so that they can be flipped to the other side of the welded weld nuggets 2 to weld the remaining weld nuggets 2. When the contact knife fixing seats 3 are arranged in pairs facing each other, any pair of contact knife fixing seats 3 can rotate synchronously and coaxially through the flipping device 63.

[0041] After the welding of the fusion piece 2 is completed, the contact knife 1 and the welded fusion piece 2 can be removed from the contact knife fixing seat 3 by the loading and unloading mechanism 7 for unloading.

[0042] welding Figure 2 Taking the finished product process as an example, in this finished product, the welded sheet 2 has two layers. When using the spot welding machine for welding, firstly, the three-dimensional drive mechanism 71 drives the material handling jaws 73 to move sequentially above each material feeding platform 72, sequentially grabbing two contact blades 1 and multiple welded sheets 2. After grabbing, they are sequentially loaded onto the corresponding contact blade fixing seats 3 and welded sheet fixing seats 4, completing the loading. After loading is completed, as follows... Figure 13 , 14As shown, the first linear drive device 611 moves a fusion piece fixing seat 4 to below the gap of the contact knife fixing seat 3, and the lifting device 62 lifts the fusion piece fixing seat 4 to insert the corresponding fusion piece 2 between a pair of contact knives 1. After insertion, the folded part 21 on the fusion piece 2 is close to the first connecting part 11 of the two contact knives 1. Then, the second linear drive device 612 drives a pair of welding electrodes 5 to move between the fusion piece fixing seats 4 and directly opposite the folded parts 21 on both sides of the fusion piece 2. Next, the alignment grippers 64 drive the pair of welding electrodes 5 to press the two sides of the fusion piece 2 to prevent deformation and displacement, and weld and fix the contact knife 1 and the fusion piece 2, completing one welding operation. According to the welding requirements, after multi-point welding with the welding alignment mechanism 6, the welding operation of one fusion piece 2 is completed. After welding, the fusion piece fixing seat 4 releases the fusion piece 2 and resets. Then, the first drive device and the lifting device 62 drive the corresponding fusion piece fixing seats 4 one by one, thereby welding the fusion pieces 2 one by one onto the contact knife 1 until the welding operation of one layer of fusion pieces 2 is completed. Afterwards, the flipping device 63 can drive the contact blade 1 and the welded sheet 2 to rotate 180° to continue the welding operation of the next layer of welded sheet 2 until the welding is completed and the material is unloaded through the loading and unloading mechanism 7.

[0043] In summary, this spot welding machine can automatically weld and assemble the contact blade 1 and the fusion piece 2. During the assembly process, the material is fed using the material handling jaws 73, and the fusion piece 2 is fixed by welding piece by piece. The fusion piece 2 is not easily bent or deformed, and the fusion piece 2 can be pressed tightly by the welding electrode 5 before welding. After welding, the connection between the fusion piece 2 and the contact blade 1 is firm, and the quality of the assembled product is good.

[0044] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail to the invention without departing from the spirit and scope of the invention as defined in the appended claims are within the scope of protection of the invention.

Claims

1. A contact-blade welding machine for sheet welding, characterized in that, include: A contact knife fixing seat is provided for fixing a contact knife. The contact knife fixing seats are arranged in pairs facing each other, and a gap is left between the opposing contact knife fixing seats to accommodate a fusible strip that is close to the contact knife. The contact knife fixing seat is provided with an insertion slot and a limiting hole, and a first pressing device is provided on the side. The insertion slot allows the contact knife to be inserted, and the limiting hole communicates with the insertion slot. The first pressing device includes a pressing block that is movably disposed in the limiting hole along the axial direction of the limiting hole. The pressing block can partially pass through the insertion slot and press and fix the contact knife in the insertion slot. A fusible link holder is used to fix a fusible link. The fusible link holder includes a second clamping device and two clamping blocks. The two clamping blocks are slidably connected to each other, and a gap is left between the two clamping blocks for inserting the fusible link. The second clamping device is used to push the clamping blocks closer to each other to clamp and fix the fusible link. The loading and unloading mechanism is used to load the contact blade and the molten sheet to the contact blade fixing seat and the molten sheet fixing seat respectively, and to unload the contact blade and molten sheet after welding. A welding alignment mechanism is provided, which drives the contact blade holder and / or the fusion plate holder to bring the contact blade on the contact blade holder and the fusion plate on the fusion plate holder into close contact, and drives the welding electrode to press the fusion plate onto the contact blade. The welding alignment mechanism includes alignment grippers and at least two linear drive devices, which drive two or three of the contact blade holder, the fusion plate holder, and the welding electrode to bring the contact blade on the contact blade holder and the fusion plate on the fusion plate holder into close contact, while simultaneously positioning the welding electrode directly opposite the position to be welded on the fusion plate. The welding electrodes are used to weld and fix the contact blade and the fusion plate. The welding electrodes are arranged back to back in pairs. The back-to-back welding electrodes are fixedly connected to the same alignment gripper, and the spacing is adjusted by the alignment gripper.

2. The contact welder for welded metal sheets as described in claim 1, characterized in that: The welding strip holders are provided in at least two and arranged one by one in the horizontal direction. The welding alignment mechanism also includes at least two lifting devices, each of which corresponds to one of the welding strip holders and is driven and connected to the welding strip holders. At least one of the linear driving devices is driven and connected to the lifting devices, and the driving direction is consistent with the arrangement direction of the welding strip holders.

3. The contact blade welding machine as described in claim 1, characterized in that: The welding alignment mechanism also includes a flipping device, which drives the contact blade fixing seat to rotate, thereby causing the molten sheet welded on the contact blade to flip.

4. The contact welder for welded metal sheets as described in claim 1, characterized in that: The loading and unloading mechanism includes a three-dimensional driving mechanism, a feeding platform, and multiple material-picking jaws. The feeding platform is used to place the contact blade and molten sheet before and after welding. The material-picking jaws are used to pick up and place the contact blade and molten sheet. The three-dimensional driving mechanism drives the material-picking jaws to move back and forth between the contact blade fixing seat, the molten sheet fixing seat, and the feeding platform.

5. The contact blade welding machine as described in claim 4, characterized in that: The loading and unloading mechanism also includes a platform shifting device, which corresponds to the unloading platform and is driven by the unloading platform. The driving direction of each platform shifting device is the same.

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