Welding equipment for material belt assembly

Abstract

The utility model provides a material belt assembly welding device which comprises a rotary disc, a plurality of lower feeding dies, a plurality of upper feeding dies and a plurality of lower feeding dies. The rack comprises a top plate, and a welding upper die is arranged on the top plate; the lower feeding die comprises a first die plate, a second die plate and a third die plate which are sequentially arranged from top to bottom in the longitudinal direction, and the second die plate is provided with a first positioning pin corresponding to the first positioning hole and a second positioning pin corresponding to the second positioning hole. The second die plate can move in the longitudinal direction to drive the first positioning pin and the second positioning pin to penetrate through the first die plate to be positioned or separated from the material belt assembly, and the lower feeding die can move in the longitudinal direction to be close to or away from the upper welding die. And the pre-welding material belt is positioned between the first template and the welding upper die. The first template is matched with the welding upper die, so that the material belt assembly is not greatly deformed in the longitudinal direction in the process that the positioning needle is separated from the positioning hole, and the needle clamping phenomenon is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technical field especially relates to a material belt assembly welding equipment. BACKGROUND

[0002] A certain type material belt assembly, including grinding piece and pre-welding material belt, grinding piece and pre-welding material belt weld and constitute material belt assembly. Figure 13 As shown in the figure, the first locating hole b1 is arranged on the grinding piece b, and the second locating hole a1 is arranged on the pre-welding material belt a, and in the welding process, the grinding piece b and the pre-welding material belt a are positioned and assembled by the locating pin arranged on the welding fixture. In order to ensure the positioning effect of the grinding piece b and the pre-welding material belt a, a plurality of locating holes are usually arranged on the grinding piece b and the pre-welding material belt a, and correspondingly, a plurality of locating pins corresponding to the plurality of locating holes are arranged on the welding fixture, and the locating holes on the grinding piece b and the pre-welding material belt a inevitably have errors, so that the positioning of the plurality of locating pins and the plurality of locating holes is over-constrained positioning. At the same time, since the rigidity of the material belt assembly c is poor, when the grinding piece b and the pre-welding material belt a are welded to form the material belt assembly c, the locating pin is prone to be stuck when withdrawing from the locating hole, which affects the production efficiency. SUMMARY

[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a material belt assembly welding equipment which can avoid pin sticking and ensure production efficiency.

[0004] The embodiment of the utility model realizes the following technical scheme:

[0005] A material belt assembly welding equipment, comprising: a rotary disc, a plurality of feeding lower dies are arranged on the rotary disc for carrying grinding pieces;A rack comprising a top plate, a welding upper die is arranged on the top plate, the feeding lower die can rotate with the rotary disc to periodically match the welding upper die;Wherein, the feeding lower die comprises a first mold plate, a second mold plate and a third mold plate arranged in sequence from top to bottom along the longitudinal direction, the first mold plate and the third mold plate are fixedly connected, the second mold plate is provided with a first locating pin corresponding to the first locating hole and a second locating pin corresponding to the second locating hole, and the second mold plate can move along the longitudinal direction to drive the first locating pin and the second locating pin to pass through the first mold plate positioning or separate from the material belt assembly, the feeding lower die can move along the longitudinal direction to approach or away from the welding upper die;The pre-welding material belt is between the first mold plate and the welding upper die.

[0006] Thus, when the welding is completed, the first template keeps the longitudinal position, the second template moves in the longitudinal direction towards the third template, so that the first positioning needle is separated from the first positioning hole in the longitudinal direction, and the second positioning needle is separated from the second positioning hole in the longitudinal direction. At this time, since the first template limits the material belt assembly in the longitudinal direction by cooperating with the upper welding die, the material belt assembly is stable in posture and will not deform due to the movement of the positioning needle during the movement of the positioning needle in the longitudinal direction to exit the positioning hole, so that the positioning needle can smoothly separate from the positioning hole, avoiding the occurrence of the needle sticking phenomenon, and ensuring the production efficiency. After the needle withdrawal action is completed, the lower feeding die moves downward in the longitudinal direction as a whole to separate from the material belt assembly, and the material removal lower die rotates with the rotary disc to enter the next welding cycle.

[0007] According to a preferred embodiment, a first guide rod extending in the longitudinal direction is arranged between the first template and the third template, the first guide rod penetrates through the second template and is in sliding connection with the second template, and a first return spring is arranged between the second template and the first template and acts on the second template to make the second template always have a tendency to move towards the first template.

[0008] According to a preferred embodiment, the lower feeding die further comprises a lower push plate and a second guide rod, the rotary disc is between the lower push plate and the third template, the lower push plate and the third template are connected through the second guide rod, the second guide rod extends in the longitudinal direction, the second guide rod penetrates through the rotary disc and is in sliding connection with the rotary disc; a second return spring is arranged between the lower push plate and the rotary disc and acts on the lower push plate to make the third template have a tendency to move towards the rotary disc.

[0009] According to a preferred embodiment, the upper welding die comprises an upper die plate, the upper die plate is installed on the top plate, and a welding hole for leaking out the welding points of the material belt assembly is arranged through the upper die plate; a positioning pin shaft is arranged on the top plate or the upper die plate, and a positioning pin hole matched with the positioning pin shaft is arranged on the first template.

[0010] According to a preferred embodiment, the rack further comprises a bottom plate, the top plate and the bottom plate are arranged in the longitudinal direction; the upper welding die comprises an upper push plate, the top plate is between the upper push plate and the bottom plate; a push rod is arranged on the upper push plate, and the push rod is used to drive the second template to move in the longitudinal direction and approach the third template in the longitudinal direction.

[0011] According to a preferred embodiment, the rack further comprises a longitudinal plate and a bottom plate, the top plate and the bottom plate are longitudinally spaced, the longitudinal plate is longitudinally extended, one end of the longitudinal plate is connected to the top plate, and the other end of the longitudinal plate is connected to the bottom plate; the end of the longitudinal plate close to the top plate is provided with a material port, and the lower side of the top plate is provided with two guide strips, and the pre-welding material belt or the material belt assembly is arranged between the two guide strips.

[0012] According to a preferred embodiment, the top plate or the longitudinal plate is provided with an auxiliary support plate, the auxiliary support plate is arranged between the two guide strips, and the pre-welding material belt or the material belt assembly is longitudinally limited by the auxiliary support plate.

[0013] According to a preferred embodiment, the rack further comprises a longitudinal plate and a bottom plate, the top plate and the bottom plate are longitudinally spaced, the longitudinal plate is longitudinally extended, one end of the longitudinal plate is connected to the top plate, and the other end of the longitudinal plate is connected to the bottom plate; the end of the longitudinal plate close to the top plate is provided with a material port, and the lower side of the top plate is provided with two guide strips, and the pre-welding material belt or the material belt assembly is arranged between the two guide strips.

[0014] According to a preferred embodiment, the upper die further comprises a pressing block and a limiting strip, the upper side of the upper die plate is provided with an assembly groove, the welding hole is arranged at the bottom of the assembly groove, and the bottom of the assembly groove is provided with a guide hole; the pressing block comprises a guide part, the guide part is slidingly embedded in the guide hole, the upper end of the guide part is provided with a limiting protrusion to prevent the guide part from being separated from the guide hole in the longitudinal direction, and the lower end of the guide part is provided with a pressing head for pressing the grinding part and the pre-welding material belt; the limiting strip is installed on the upper die plate, the limiting strip is provided with a limiting surface, the limiting surface is above the pressing block, a buffer spring is arranged between the pressing block and the limiting surface, and the buffer spring acts on the pressing block to make the pressing block have a downward movement tendency in the longitudinal direction.

[0015] According to a preferred embodiment, the first die plate is provided with a suction cup for adsorbing and fixing the grinding part. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1The utility model provides a material belt assembly welding equipment's three -dimensional structure schematic diagram provided for the embodiment of the utility model;

[0018] Figure 2 For Figure 1 The partial enlarged view of structure in A of middle part;

[0019] Figure 3 The front view structure schematic diagram of feeding lower mould assembly to rotary disc provided for the embodiment of the utility model;

[0020] Figure 4 The three -dimensional structure schematic diagram of feeding lower mould assembly after assembling material belt assembly provided for the embodiment of the utility model;

[0021] Figure 5 The three -dimensional structure schematic diagram of feeding lower mould provided for the embodiment of the utility model;

[0022] Figure 6 The front view structure schematic diagram of feeding lower mould provided for the embodiment of the utility model;

[0023] Figure 7 The assembly structure schematic diagram of auxiliary support plate, guide strip and top plate provided for the embodiment of the utility model;

[0024] Figure 8 The explosion schematic diagram of the assembly structure of upper template, press block and limit strip provided for the embodiment of the utility model;

[0025] Figure 9 The plan view structure schematic diagram of upper template provided for the embodiment of the utility model;

[0026] Figure 10 The three -dimensional structure schematic diagram of press block provided for the embodiment of the utility model;

[0027] Figure 11 The assembly structure schematic diagram of guide strip and auxiliary support plate provided for the embodiment of the utility model;

[0028] Figure 12 The assembly structure schematic diagram of another guide strip and auxiliary support plate provided for the embodiment of the utility model;

[0029] Figure 13 The three -dimensional structure schematic diagram of material belt assembly in the embodiment of the utility model.

[0030] Icon: 1, rotary disc; 2, feeding lower die; 21, first die plate; 211, first positioning pin; 212, second positioning pin; 213, positioning pin hole; 214, suction cup; 22, second die plate; 221, first guide rod; 222, bearing nail; 23, third die plate; 24, adapter block; 25, push-down plate; 26, second guide rod; 27, first return spring; 28, second return spring; 3, driving part; 31, first air cylinder; 32, first driving plate; 41, top plate; 411, second air cylinder; 412, guide strip; 42, vertical plate; 421, material port; 43, bottom plate; 44, auxiliary support plate; 5, welding upper die; 51, upper die plate; 510, welding hole; 511, positioning pin shaft; 512, assembly groove; 513, guide hole; 52, pressing block; 521, guide part; 522, limiting protrusion; 523, pressing head; 53, limiting strip; 531, limiting surface; 54, buffer spring; 55, push-up plate; 551, push rod; a, pre-welding material belt; a1, second positioning hole; b, grinding part; b1, first positioning hole; c, material belt assembly; X, first direction. DETAILED DESCRIPTION

[0031] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0032] In the description of the present application, it should be pointed out that the directions or position relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application in that the indicated devices or elements must have a specific direction, be constructed and operated in a specific direction.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0034] Please refer to Figures 1 to 13 A material belt assembly c welding device, comprising a rotary disc 1 and a rack, a plurality of feeding lower dies 2 are arranged on the rotary disc 1, and the feeding lower dies 2 are used for bearing grinding parts b;

[0035] The rack comprises a top plate 41, on which a welding upper die 5 is arranged, and a feeding lower die 2 capable of rotating with the rotary disc 1 to periodically match the welding upper die 5; wherein the feeding lower die 2 comprises a first die plate 21, a second die plate 22 and a third die plate 23 arranged in sequence from top to bottom along the longitudinal direction, the first die plate 21 and the third die plate 23 are fixedly connected through an adapter block 24, the second die plate 22 is arranged with a first positioning pin 211 corresponding to a first positioning hole b1 and a second positioning pin 212 corresponding to a second positioning hole a1, the second die plate 22 is capable of moving along the longitudinal direction to drive the first positioning pin 211 and the second positioning pin 212 to pass through the first die plate 21 to position or disengage the material belt assembly c, and the feeding lower die 2 is capable of moving along the longitudinal direction to approach or move away from the welding upper die 5; the pre-welding material belt a is located between the first die plate 21 and the welding upper die 5. In the embodiment, the rotary disc 1 is driven to rotate by a DD rotary motor. The pre-welding material belt a is capable of moving along the first direction X, and eight grinding pieces b are arranged on the first die plate 21 along the length direction of the first die plate 21 to simultaneously realize the welding assembly of the eight grinding pieces b and the pre-welding material belt a. Specifically, when the feeding lower die 2 rotates to the appropriate position with the rotary disc 1 and matches the welding upper die 5, the length direction of the first die plate 21 is parallel to the first direction X, so that the grinding pieces b correspond to the pre-welding material belt a in the first direction X, and then the grinding pieces b are attached to the pre-welding material belt a by moving the feeding lower die 2 along the longitudinal direction to form the material belt assembly c, in the process, the second positioning pin 212 is inserted into the second positioning hole a1, and the material belt assembly c is attached to the welding upper die 5 under the action of the feeding lower die 2, so that the material belt assembly c is fixed in position in the longitudinal direction, and the spatial position of the material belt assembly c is fixed under the cooperation of the positioning pin and the positioning hole, thereby facilitating welding by a laser welding mechanism (not shown in the figure); after welding is completed, the first die plate 21 remains in the longitudinal position, the second die plate 22 moves along the longitudinal direction towards the third die plate 23 to make the first positioning pin 211 disengage the first positioning hole b1 in the longitudinal direction, and at the same time, the second positioning pin 212 disengages the second positioning hole a1 in the longitudinal direction, at this time, since the first die plate 21 cooperates with the welding upper die 5 to limit the material belt assembly c in the longitudinal direction, the material belt assembly c is stable in posture and will not move with the positioning pin to deform due to the movement of the positioning pin in the process of moving the positioning pin along the longitudinal direction to exit the positioning hole, which can ensure that the positioning pin smoothly disengages the positioning hole and avoid the occurrence of pin jamming, thereby ensuring production efficiency; after the pin disengaging action is completed, the feeding lower die 2 moves downward as a whole along the longitudinal direction to disengage the material belt assembly c, and the disengaging lower die rotates with the rotary disc 1 to enter the next welding cycle.

[0036] In the embodiment, the feeding lower die 2 on the rotary disc 1 is three and is circumferentially distributed on the rotary disc 1.

[0037] As Figure 6As shown, a first guide rod 221 extending in the longitudinal direction is arranged between the first template 21 and the third template 23, the first guide rod 221 penetrates through the second template 22 and is in sliding connection with the second template 22, a first reset spring 27 is arranged between the second template 22 and the first template 21, the first reset spring 27 acts on the second template 22 to make the second template 22 always have a tendency to move towards the first template 21. In the embodiment, there are four first guide rods 221, so that the second template 22 can stably move between the first template 21 and the third template 23, and the first reset spring 27 acts on the second template 22 to enable the second template 22 to reset after the feeding lower die 2 is separated from the material belt assembly c.

[0038] As shown in Figure 3 and Figure 6 As shown, the feeding lower die 2 further comprises a push-down plate 25 and a second guide rod 26, the rotary disc 1 is located between the push-down plate 25 and the third template 23, the push-down plate 25 and the third template 23 are connected through the second guide rod 26, the second guide rod 26 extends in the longitudinal direction, the second guide rod 26 penetrates through the rotary disc 1 and is in sliding connection with the rotary disc 1; a second reset spring 28 is arranged between the push-down plate 25 and the rotary disc 1, the second reset spring 28 acts on the push-down plate 25 to make the third template 23 have a tendency to move towards the rotary disc 1. The second reset spring 28 is used to quickly reset the feeding lower die 2 in the longitudinal direction downward during the process that the feeding lower die 2 is separated from the material belt assembly c.

[0039] As shown in Figure 1 As shown, the rack further comprises a longitudinal plate 42 and a bottom plate 43, the top plate 41 and the bottom plate 43 are arranged in the longitudinal direction, the longitudinal plate 42 extends in the longitudinal direction, one end of the longitudinal plate 42 is connected to the top plate 41, and the other end of the longitudinal plate 42 is connected to the bottom plate 43. In the embodiment, the bottom plate 43 is provided with a driving member 3 for driving the push-down plate 25 to move upward in the longitudinal direction, the driving member 3 comprises a first air cylinder 31 arranged on the bottom plate 43, a first driving plate 32 is arranged on the free end of the piston rod of the first air cylinder 31, and the push-down plate 25 is located on the upward movement path of the first driving plate 32 in the longitudinal direction. In use, the first air cylinder 31 drives the first driving plate 32 to move upward in the longitudinal direction, the first driving plate 32 acts on the push-down plate 25 to make the first template 21, i.e. the feeding lower die 2, move upward in the longitudinal direction, in this process, the first reset spring 27 is compressed and stored, when the first driving member 3 drives the first driving plate 32 to move downward in the longitudinal direction, the first reset spring 27 acts on the rotary disc 1 and the push-down plate 25 to make the first template 21, i.e. the feeding lower die 2, move downward in the longitudinal direction to reset.

[0040] The welding upper die 5 comprises an upper die plate 51, the upper die plate 51 is installed on the top plate 41, and a welding hole 510 for leaking welding points of the material belt assembly c is arranged on the upper die plate 51;

[0041] The top plate 41 or the upper die plate 51 is provided with a positioning pin shaft 511, and the first die plate 21 is provided with a positioning pin hole 213 matched with the positioning pin shaft 511. Preferably, the positioning pin shaft 511 is arranged on the upper die plate 51. In use, the positioning pin shaft 511 cooperates with the positioning pin hole 213 to position the feeding lower die 2, so that the abrasive element b is accurately positioned with the pre-welding strip a, which helps to ensure the product quality. In this embodiment, the laser beam of the laser welding mechanism passes through the welding hole 510 and irradiates the welding point of the strip assembly c.

[0042] The welding upper die 5 further comprises a pressing block 52 and a limiting strip 53. The upper side of the upper die plate 51 is provided with an assembly groove 512, the welding hole 510 is arranged at the bottom of the assembly groove 512, and the bottom of the assembly groove 512 is provided with a guide hole 513; the pressing block 52 comprises a guide portion 521 which is slidingly embedded in the guide hole 513, the upper end of the guide portion 521 is provided with a limiting protrusion 522 to prevent the guide portion 521 from being separated from the guide hole 513 in the longitudinal direction, and the lower end of the guide portion 521 is provided with a pressing head 523 for pressing the abrasive element b and the pre-welding strip a; the limiting strip 53 is installed on the upper die plate 51, and the limiting strip 53 is provided with a limiting surface 531 above the pressing block 52. A buffer spring 54 is arranged between the pressing block 52 and the limiting surface 531, and the buffer spring 54 acts on the pressing block 52 to make the pressing block 52 have a movement tendency in the longitudinal direction downward. In use, the feeding lower die 2 drives the abrasive element b to adhere to the pre-welding strip a in the longitudinal direction upward, and drives the two upward so that the pre-welding strip a abuts against the pressing head 523. During the process, the pressing head 523 drives the guide portion 521 to move upward in the longitudinal direction in the guide hole 513, at this time, the third return spring is compressed and stored, realizing the flexible contact of the pre-welding strip a and the pressing head 523, i.e. the pressing block 52, which avoids the pre-welding strip a and the abrasive element b being damaged by pressing.

[0043] In some embodiments, as shown in Figure 9 , the guide hole 513 communicates with the welding hole 510, and the cross section of the guide hole 513 is T-shaped. As shown in Figure 10 , the shape of the guide portion 521 matches the shape of the guide hole 513.

[0044] As shown in Figure 1 and Figure 2 , the welding upper die 5 comprises an upper push plate 55, and the top plate 41 is between the upper push plate 55 and the bottom plate 43;

[0045] The push rod 551 is arranged on the upper pushing plate 55 and is used to drive the second die plate 22 to move along the longitudinal direction and approach the third die plate 23. In this embodiment, the push rod 551 penetrates through the top plate 41, and the second air cylinder 411 is arranged on the top plate 41 and is used to drive the upper pushing plate 55 to move along the longitudinal direction. The bearing nail 222 corresponding to the push rod 551 is arranged on the second die plate 22. In use, the second air cylinder 411 drives the upper pushing plate 55 to move downward along the longitudinal direction, and the bearing nail 222 is driven by the push rod 551 to drive the second die plate 22 to move towards the third die plate 23, so that the positioning needle is separated from the positioning hole.

[0046] As shown in Figure 11 , in some embodiments, the end of the longitudinal plate 42 close to the top plate 41 is provided with a material port 421, and the lower side of the top plate 41 is provided with two guide strips 412, and the pre-welding material belt a or the material belt assembly c is located between the two guide strips 412. Further, the top plate 41 or the longitudinal plate 42 is provided with an auxiliary support plate 44, which is transverse to the two guide strips 412 and is used to limit the pre-welding material belt a or the material belt assembly c in the longitudinal direction. As shown in Figure 7 and Figure 11 , the auxiliary support plate 44 cooperates with the guide strips 412 to limit the pre-welding material belt a and the material belt assembly c, so that the material belt maintains a stable movement trajectory.

[0047] As shown in Figure 11 , the guide strips 412 are provided with a bearing surface, and the pre-welding material belt a or the material belt assembly c is slidably attached to the bearing surface; the guide strips 412 are adjustably assembled on the top plate 41 along the longitudinal direction. In this embodiment, the guide strips 412 penetrate through the top plate 41 and are slidably connected thereto, and the guide strips 412 are driven to move along the longitudinal direction by the third air cylinder (not shown in the figure) mounted on the top plate 41, so as to adjust the degree of compression of the pre-welding material belt a and the material belt assembly c in the longitudinal direction.

[0048] In some embodiments, as shown in Figure 12 , the pre-welding material belt a or the material belt assembly c is located below the two guide strips 412. That is, the pre-welding material belt a or the material belt assembly c is located between the auxiliary support plate 44 and the guide strips 412.

[0049] In this embodiment, the first die plate 21 is provided with a suction cup 214 for adsorbing and fixing the abrasive element b.

[0050] In this embodiment, a method for using the material belt assembly c welding equipment is also provided, which is applied to the aforementioned material belt assembly c welding equipment and includes the following steps:

[0051] S1: Assemble the abrasive element b to the feeding lower die 2, so that the first positioning needle 211 penetrates through the first positioning hole b1;

[0052] S2: rotate the rotary disc 1 so that the feeding lower die 2 matches with the welding upper die 5;

[0053] S3: the feeding lower die 2 moves upward along the longitudinal direction so that the abrasive b is attached to the pre-welding strip a, and the pre-welding strip a is attached to the welding upper die 5, meanwhile the second positioning needle 212 is arranged in the second positioning hole a1; S4: weld the abrasive b and the pre-welding strip a to form the strip assembly c;

[0054] S5: the first die plate 21 keeps the longitudinal height, the second die plate 22 moves downward along the longitudinal direction so that the first positioning needle 211 is separated from the first positioning hole b1, and the second positioning needle 212 is separated from the second positioning hole a1;

[0055] S6: the feeding lower die 2 moves downward along the longitudinal direction as a whole to separate from the strip assembly c;

[0056] S7: rotate the rotary disc 1, the strip assembly c moves forward to enter the next welding cycle.

[0057] In this way, by keeping the longitudinal height of the strip assembly c by the first die plate 21 and matching with the welding upper die 5, the strip assembly c does not have a large deformation in the longitudinal direction during the process of separating the positioning needle from the positioning hole, so that the needle jamming phenomenon is avoided, and the production efficiency is ensured.

[0058] The technical means disclosed by the utility model scheme is not only limited to the technical means disclosed by the above-mentioned embodiments, but also includes the technical scheme composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the technical field, without departing from the principle of the utility model, some improvements and refinements can be made, and these improvements and refinements are also considered as the protection range of the utility model.

Claims

1. A tape assembly welding apparatus characterized by, The utility model relates to a welding machine for welding pre-welding material belt or material belt assembly, comprising: a rotary disc, a plurality of feeding lower dies are arranged on the rotary disc and used for carrying grinding parts; a rack, a top plate is arranged on the rack, a welding upper die is arranged on the top plate, the feeding lower die can rotate with the rotary disc to periodically match with the welding upper die; wherein, the feeding lower die comprises a first die plate, a second die plate and a third die plate which are sequentially arranged along the longitudinal direction from top to bottom, the first die plate and the third die plate are fixedly connected, the second die plate is provided with a first positioning pin corresponding to a first positioning hole and a second positioning pin corresponding to a second positioning hole, the second die plate can move along the longitudinal direction to drive the first positioning pin and the second positioning pin to pass through the first die plate to position or separate from the material belt assembly, the feeding lower die can move along the longitudinal direction to approach or move away from the welding upper die; the pre-welding material belt is between the first die plate and the welding upper die.

2. The tape assembly welding apparatus of claim 1, wherein, A first guide rod extending along the longitudinal direction is arranged between the first die plate and the third die plate, the first guide rod penetrates through the second die plate and is slidably connected therewith, a first return spring is arranged between the second die plate and the first die plate and acts on the second die plate to make the second die plate always have a tendency to move towards the first die plate.

3. The tape assembly welding apparatus of claim 1, wherein, The feeding lower die further comprises a push plate and a second guide rod, the rotary disc is between the push plate and the third die plate, the push plate and the third die plate are connected through the second guide rod, the second guide rod extends along the longitudinal direction, the second guide rod penetrates through the rotary disc and is slidably connected therewith; A second return spring is arranged between the push plate and the rotary disc and acts on the push plate to make the third die plate have a tendency to move towards the rotary disc.

4. The tape assembly welding apparatus of claim 1, wherein, The welding upper die comprises an upper die plate, the upper die plate is installed on the top plate, a welding hole for leaking out the welding point of the material belt assembly is arranged on the upper die plate; A positioning pin shaft is arranged on the top plate or the upper die plate, a positioning pin hole matched with the positioning pin shaft is arranged on the first die plate.

5. The tape assembly welding apparatus of claim 1, wherein, The rack further comprises a bottom plate, the top plate and the bottom plate are arranged at intervals along the longitudinal direction; The welding upper die comprises an upper push plate, the top plate is between the upper push plate and the bottom plate; A push rod is arranged on the upper push plate and used for driving the second die plate to move along the longitudinal direction and approach the third die plate along the longitudinal direction.

6. The tape assembly welding apparatus of claim 1, wherein, The rack further comprises a vertical plate and a bottom plate, the top plate and the bottom plate are arranged at intervals along the longitudinal direction, the vertical plate extends along the longitudinal direction, one end of the vertical plate is connected to the top plate, and the other end of the vertical plate is connected to the bottom plate; An opening is formed in the end of the vertical plate close to the top plate, two guide strips are arranged on the lower side of the top plate, and the pre-welding material belt or the material belt assembly is between the two guide strips.

7. The tape assembly welding apparatus of claim 6, wherein, An auxiliary support plate is arranged on the top plate or the vertical plate, the auxiliary support plate spans between the two guide strips and is used for limiting the pre-welding material belt or the material belt assembly along the longitudinal direction.

8. The tape assembly welding apparatus of claim 1, wherein, The rack further comprises a longitudinal plate and a bottom plate, the top plate and the bottom plate are longitudinally spaced, the longitudinal plate is longitudinally extended, one end of the longitudinal plate is connected to the top plate, and the other end of the longitudinal plate is connected to the bottom plate; An end of the longitudinal plate close to the top plate is provided with a material port, and the lower side of the top plate is provided with a guide strip; An auxiliary support plate is arranged on the top plate or the longitudinal plate, and is used for limiting the pre-welding material belt or the material belt assembly in the longitudinal direction; The pre-welding material belt or the material belt assembly is between the auxiliary support plate and the guide strip.

9. The tape assembly welding apparatus of claim 4, wherein, The upper die further comprises a pressing block and a limiting strip, the upper side of the upper die plate is provided with an assembly groove, the welding hole is arranged through the bottom of the assembly groove, and the bottom of the assembly groove is provided with a guide hole; The pressing block comprises a guide part, the guide part is slidingly embedded in the guide hole, an upper end of the guide part is provided with a limiting protrusion to prevent the guide part from being separated from the guide hole in the longitudinal direction, and a lower end of the guide part is provided with a pressing head for pressing the grinding part and the pre-welding material belt; The limiting strip is installed on the upper die plate, the limiting strip is provided with a limiting surface, the limiting surface is above the pressing block, a buffer spring is arranged between the pressing block and the limiting surface, the buffer spring acts on the pressing block, so that the pressing block has a downward movement trend in the longitudinal direction.

10. The tape assembly welding apparatus of claim 1, wherein, The first die plate is provided with a suction cup for adsorbing and fixing the grinding part.

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