Welding device and welding method for door seal

Abstract

The embodiment of the invention discloses a door seal welding device and method, and belongs to the technical field of door seal welding. The welding device comprises four sets of welding modules, each welding module comprises a static edge module, and every two adjacent static edge modules are matched to clamp the short edge of the door seal; every two adjacent movable edge modules are matched with each other to clamp the long edge of the door seal; the die assembling assembly is arranged on the movable edge die set; the two groups of first moving modules are used for driving the two adjacent static edge modules to move relatively; the two second moving modules are used for driving the two moving edge modules to move relatively; and the third moving module is used for driving the first moving module and the second moving module to move relatively. The fixed edge module and the movable edge module are driven by the multiple moving modules to move at will, the same welding device can produce door sealing strips of multiple sizes, the welding efficiency is high, and the equipment maintenance cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of door seal strip welding, and in particular to a welding device and a welding method for a door seal strip. Background Art

[0002] Door seals are usually used to seal, protect or isolate items, and refrigerator door seals are common. An important link in the production of refrigerator door seals is the welding of door seals. The refrigerator can only be sealed and installed after welding is completed. The welding quality of the door seal directly affects the sealing and service life of the refrigerator. Therefore, during the welding process, it is necessary to strictly control the welding temperature, time and other parameters to ensure the welding quality. In the prior art, the door seal is grabbed by a robot and inserted into the existing welding machine for welding. However, the robot grabs the door seal back and forth, and the operation efficiency is not high. Increasing the number of robots will increase the production cost and the floor space of the device. In addition, the regular maintenance and maintenance of the equipment are complicated, and the size of the door seal will also be limited.

[0003] The inventors of the present application discovered during the process of implementing the present invention that the above-mentioned solutions in the prior art have the defects of low production efficiency, difficult equipment maintenance and limited product size. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a welding device and a welding method for a door seal, which can realize the production of door seals of multiple sizes on the same set of welding devices, and has high welding efficiency and low equipment maintenance cost.

[0005] In order to achieve the above object, an embodiment of the present invention provides a door seal welding device, comprising:

[0006] Four groups of welding modules, the four groups of welding modules are distributed in a square shape, and the welding modules include:

[0007] Static edge modules, two adjacent static edge modules cooperate to clamp the short edge of the door seal;

[0008] A movable edge module, wherein two adjacent movable edge modules cooperate to clamp the long edge of the door seal;

[0009] A mold clamping assembly, arranged on the moving side mold set, for driving the moving side mold set and the stationary side mold to weld the combined molds;

[0010] Two groups of first moving modules are respectively arranged at the bottom of two adjacent static side modules, and are used to drive the two adjacent static side modules to move relative to each other;

[0011] Two groups of second movable modules are arranged in parallel between the two groups of the first movable modules, and the two groups of the second movable modules are respectively arranged at the bottom of the two movable side modules corresponding to the two adjacent static side modules, so as to drive the two movable side modules to move relative to each other;

[0012] The third movable module, two groups of the first movable modules and two groups of the second movable modules are vertically arranged on the third movable module, and the third movable module is used to drive the two groups of the first movable modules and the two groups of the second movable modules to move relative to each other.

[0013] Optionally, the moving edge module further includes:

[0014] A first bottom plate, wherein a pin hole is formed on the first bottom plate;

[0015] A first fixing assembly, arranged on one side of the first bottom plate;

[0016] A second fixing component is disposed on the other side of the first bottom plate and is slidably connected to the first bottom plate;

[0017] a first connecting rod, one end of which is hinged to the second fixing assembly;

[0018] a second connecting rod, one end of which is hinged to the first fixing assembly, and the other end of which is hinged to the other end of the first connecting rod, and the two rods cooperate to form a V-shaped structure;

[0019] The first driving assembly is arranged on the first base plate, and the output end of the first driving assembly is hinged to the hinge ends of the first connecting rod and the second connecting rod, and is used to drive the angle between the first connecting rod and the second connecting rod to change for mold welding.

[0020] Optionally, the static edge module further includes:

[0021] Second base plate;

[0022] A third fixing component is arranged at the bottom of the second bottom plate, and a through hole is arranged on the third fixing component, and a latch is arranged in the through hole;

[0023] A second driving component, wherein the output end of the second driving component is connected to the bottom of the third fixing component, and is used to push out the latch and position it in cooperation with the latch hole.

[0024] Optionally, each group of the first mobile modules includes:

[0025] Two first driving plates are connected to the bottoms of two adjacent static edge modules;

[0026] A first driving bottom plate, arranged below the first driving plate;

[0027] The first moving component is arranged on the first driving bottom plate, and the output end of the first moving component is connected to the bottoms of the two first driving plates.

[0028] Optionally, the first moving component includes:

[0029] A first guide rail is arranged on the top of the first driving bottom plate, and two first driving plates are slidably connected to the first guide rail;

[0030] A first rack, arranged on a side wall of the first driving bottom plate;

[0031] Two first drive motors are respectively arranged on the two first drive plates. The output end of the first drive motor is provided with a first gear, and the first gear is meshed and connected with the first rack.

[0032] Optionally, each group of the second mobile modules includes:

[0033] Two second driving plates are connected to the bottoms of the two moving side modules corresponding to the two adjacent stationary side modules;

[0034] a second driving bottom plate, disposed below the second driving plate;

[0035] The second moving component is arranged on the second driving bottom plate, and the output end of the second moving component is connected to the bottoms of the two second driving plates.

[0036] Optionally, the second moving component includes:

[0037] A second guide rail is arranged on the top of the second driving bottom plate, and two second driving plates are slidably connected to the second guide rail;

[0038] A second rack, arranged on a side wall of the second driving bottom plate;

[0039] Two second drive motors are respectively arranged on the two second drive plates. The output end of the second drive motor is provided with a second gear, and the second gear is meshedly connected with the second rack.

[0040] Optionally, the third mobile module includes:

[0041] Base;

[0042] A plurality of third driving base plates are arranged in parallel on the base, the first driving base plate and the second driving base plate are arranged on top of the plurality of third driving base plates and are vertically distributed with the plurality of third driving base plates;

[0043] A plurality of third moving components are respectively arranged on the plurality of third driving base plates, and an output end of the third moving component is connected to the first driving base plate or the second driving base plate.

[0044] Optionally, the third moving component includes:

[0045] A third guide rail is arranged on the top of the third driving bottom plate, and the first driving bottom plate and the second driving bottom plate are slidably connected to the third guide rail;

[0046] A third rack, arranged on a side wall of the third driving base plate;

[0047] The third driving motor is arranged on the first driving base plate or the second driving base plate. The output end of the third driving motor is provided with a third gear, and the third gear is meshed and connected with the third rack.

[0048] On the other hand, the present invention also provides a welding method using any of the above-mentioned welding devices, comprising:

[0049] Starting the third moving module to drive the two first moving modules and the two second moving modules away from each other;

[0050] Start the two first moving modules and the two second moving modules to drive two adjacent welding modules away from each other;

[0051] Grab two sets of short-side door seals respectively and place them between two adjacent static-side modules, and the two adjacent static-side modules cooperate to clamp and fix the short-side door seals;

[0052] Grab two groups of long side door seals respectively and place them between two adjacent moving side modules. The two adjacent moving side modules cooperate to clamp and fix the long side door seals, and bend the long side door seals.

[0053] Starting two first moving modules, two second moving modules and a third moving module to drive the four groups of welding modules to approach each other;

[0054] The mold clamping assembly is started to drive the four groups of welding modules to weld synchronously.

[0055] Through the above technical scheme, the present invention provides a welding device and a welding method for a door seal, wherein the short side and the long side of the door seal are grasped by a static side module and a dynamic side module, and then the static side module and the dynamic side module are driven to move arbitrarily on the guide rail by multiple groups of moving components. After the static side module and the dynamic side module are moved to the positioning position, the clamping device welds the long side and the short side of the door seal at the same time to realize automatic welding of the door seal, and the dynamic side module and the static side module can move arbitrarily, and the long side and the short side of different sizes can be cut to produce door seals of multiple sizes, thereby reducing the production cost, and the welding device does not require a robot to grasp the long side and the short side back and forth, thereby reducing the time waiting for the robot to be in place, improving production efficiency, and reducing equipment repair and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0057] Figure 1 is an overall schematic diagram of a door seal welding device according to an embodiment of the present invention;

[0058] Figure 2 is a schematic diagram of a moving edge module of a welding module according to an embodiment of the present invention;

[0059] Figure 3 is a schematic diagram of a moving edge module and a stationary edge module of a welding module according to an embodiment of the present invention;

[0060] Figure 4 is a schematic diagram of a partial moving module of a welding device according to an embodiment of the present invention;

[0061] Figure 5 is a partial schematic diagram of a first moving assembly according to an embodiment of the present invention;

[0062] Figure 6 is a partial schematic diagram of a second moving assembly according to an embodiment of the present invention;

[0063] Figure 7 is a partial schematic diagram of a third moving assembly according to an embodiment of the present invention.

[0064] Description of Reference Numerals

[0065] 1. Welding module 11. Moving edge module

[0066] 12. Stationary edge module 13. Clamping assembly

[0067] 2. First mobile module 3. Second mobile module

[0068] 4. Third mobile module 111, first base plate

[0069] 112, pin hole 113, first fixing component

[0070] 114. Second fixing assembly 115. First connecting rod

[0071] 116. Second connecting rod 117. First driving assembly

[0072] 121. Second bottom plate 122. Third fixing assembly

[0073] 123, latch 124, second drive assembly

[0074] 21. First driving plate 22. First driving bottom plate

[0075] 23. First moving assembly 231. First guide rail

[0076] 232, first rack 233, first gear

[0077] 234, first drive motor 31, second drive plate

[0078] 32. Second driving base plate 33. Second moving assembly

[0079] 331, second guide rail 332, second rack

[0080] 333, second gear 334, second drive motor

[0081] 41. Base 42. Third drive base plate

[0082] 43. Third moving assembly 431. Third guide rail

[0083] 432, third rack 433, third gear

[0084] 434, third drive motor DETAILED DESCRIPTION

[0085] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0086] In the embodiments of the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings or are used to describe the relative positional relationships of components in the vertical, perpendicular or gravity direction.

[0087] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0088] like Figure 1 FIG. 1 is a schematic diagram of a welding device for a door seal according to an embodiment of the present invention. Figure 2 FIG. 1 is a schematic diagram of a moving edge module 11 of a welding module 1 according to an embodiment of the present invention. Figure 3 FIG. 1 is a schematic diagram of a moving edge module 11 and a stationary edge module 12 of a welding module 1 according to an embodiment of the present invention. Figure 1 In the embodiment, the welding device comprises four groups of welding modules 1, two groups of first moving modules 2, two groups of second moving modules 3 and a third moving module 4. Specifically, the four groups of welding modules 1 are distributed in a square shape, and each group of welding modules 1 includes a stationary edge module 12 and a moving edge module 11. The two adjacent stationary edge modules 12 cooperate to clamp the short side of the door seal, and the two adjacent moving edge modules 11 cooperate to clamp the long side of the door seal. A clamping assembly 13 is arranged on the moving edge module 11, which is used to drive the moving edge module 11 and the stationary edge module 12 to clamp and weld. The two groups of first movable modules 2 are respectively arranged at the bottom of the two adjacent stationary edge modules 12, and are used to drive the two adjacent stationary edge modules 12 to move relative to each other. The two groups of second movable modules 3 are arranged in parallel between the two groups of first movable modules 2, and are respectively arranged at the bottom of the two moving edge modules 11 corresponding to the two adjacent stationary edge modules 12, and are used to drive the two moving edge modules 11 to move relative to each other. The two groups of first movable modules 2 and the two groups of second movable modules 3 are vertically arranged on the third movable module 4, and the third movable module 4 is used to drive the two groups of first movable modules 2 and the two groups of second movable modules 3 to move relative to each other.

[0089] like Figure 2 and Figure 3As shown, the moving side mold assembly 11 includes a first bottom plate 111, a first fixing assembly 113, a second fixing assembly 114, a first connecting rod 115, a second connecting rod 116 and a first driving assembly 117. Specifically, a pin hole 112 is provided on the first bottom plate 111, the first fixing assembly 113 is arranged on one side of the first bottom plate 111, the second fixing assembly 114 is arranged on the other side of the first bottom plate 111 and is slidably connected to the first bottom plate 111, one end of the first connecting rod 115 is hinged to the second fixing assembly 114, one end of the second connecting rod 116 is hinged to the first fixing assembly 113, and the other end of the second connecting rod 116 is hinged to the other end of the first connecting rod 115, and they cooperate to form a V-shaped structure, and the first driving assembly 117 is arranged on the first bottom plate 111, and the output end of the first driving assembly 117 is hinged to the hinged ends of the first connecting rod 115 and the second connecting rod 116, and is used to drive the angle change of the first connecting rod 115 and the second connecting rod 116 to close the mold for welding. The static side module 12 includes a second bottom plate 121, a third fixing assembly 122 and a second driving assembly 124. The third fixing assembly 122 is arranged on the bottom plate of the second bottom plate 121, and a through hole is arranged on the third fixing assembly 122, and a latch 123 is arranged in the through hole. The output end of the second driving assembly 124 is connected to the bottom of the third fixing assembly 122, so that the top latch 123 is matched with the latch hole 112 arranged on the first bottom plate 111 for positioning.

[0090] In this embodiment, the mold clamping assembly 13 is composed of a first connecting rod 115, a second connecting rod 116 and a first driving assembly 117. The second fixing assembly 114 is pushed to slide on the first bottom plate 111 by the angle change of the V-shaped structure formed by the first connecting rod 115 and the second connecting rod 116 of the mold clamping assembly 13. After the static side module 12 and the dynamic side module 11 move relatively, the static side module 12 and the dynamic side module 11 are positioned through the latch hole 112 provided on the dynamic side module 11 and the latch 123 provided on the static side module 12, so that the dynamic side module 11 and the static side module 12 are connected, and the angle of the V-shaped structure of the first connecting rod 115 and the second connecting rod 116 of the mold clamping device becomes larger, and the long side of the door seal clamped on the dynamic side module 11 is close to the short side of the door seal clamped on the static side module 12, so that the long side and the short side of the door seal are molded and welded.

[0091] During the operation of the welding device, the adjacent moving side modules 11 clamp the long side of the door seal, the adjacent stationary side modules 12 clamp the short side of the door seal, each group of first movable modules 2 drives the stationary side modules 12 to move relatively, each group of second movable modules 3 drives the moving side modules 11 to move relatively, and the third movable module 4 drives the first movable module 2 and the second movable module 3 to move relatively, so that the short side and the long side of the door seal are close to each other, and the clamping assembly 13 drives the side of the moving side module 11 that clamps the long side of the door seal to contact with the side of the stationary side module 12 that clamps the short side of the door seal, so that the short side and the long side of the door seal are clamped and welded.

[0092] like Figure 4 and Figure 5 As shown, each group of first movable modules 2 includes two first drive plates 21, a first drive bottom plate 22 and a first movable assembly 23. Specifically, the two first drive plates 21 are connected to the bottom of two adjacent static edge modules 12, the first drive bottom plate 22 is arranged below the first drive plates 21, the first movable assembly 23 is arranged on the first drive bottom plate 22, and the output end of the first movable assembly 23 is connected to the bottom of the two first drive plates 21. Among them, the first movable assembly 23 includes a first guide rail 231, a first rack 232 and two first drive motors 234, the first guide rail 231 is arranged on the top of the first drive bottom plate 22, the two first drive plates 21 are slidably connected to the first guide rail 231, the first rack 232 is arranged on the side wall of the first drive bottom plate 22, the two first drive motors 234 are respectively arranged on the two first drive plates 21, and the output end of the first drive motor 234 is provided with a first gear 233, and the first gear 233 is meshed and connected with the first rack 232. During the operation of the first movable module 2 , the two first driving motors 234 drive the two first driving plates 21 to slide on the first driving bottom plate 22 , so as to drive the stationary edge module 12 to slide on the first driving bottom plate 22 .

[0093] like Figure 4 and Figure 6 As shown, each group of second movable modules 3 includes two second drive plates 31, a second drive base plate 32 and a second movable assembly 33. Specifically, the two second drive plates 31 are connected to the bottom of the two movable side modules 11 corresponding to the two adjacent static side modules 12, the second drive base plate 32 is arranged below the second drive plate 31, the second movable assembly 33 is arranged on the second drive base plate 32, and the output end of the second movable assembly 33 is connected to the bottom of the two second drive plates 31. Among them, the second movable assembly 33 includes a second guide rail 331, a second rack 332 and two second drive motors 334. The second guide rail 331 is arranged on the top of the second drive base plate 32, the two second drive plates 31 are slidably connected to the second guide rail 331, the second rack 332 is arranged on the side wall of the second drive base plate 32, and the two second drive motors 334 are respectively arranged on the two second drive plates 31, and the output end of the second drive motor 334 is provided with a second gear 333, and the second gear 333 is meshed and connected with the second rack 332. During the operation of the second movable module 3 , the two second driving motors 334 drive the two second driving plates 31 to slide on the second driving bottom plate 32 , so as to drive the movable side module 11 to slide on the second driving bottom plate 32 .

[0094] like Figure 4 and Figure 7As shown, the third moving module 4 includes a base 41, a plurality of third driving base plates 42 and a plurality of third moving components 43. Specifically, the plurality of third driving base plates 42 are arranged in parallel on the base 41, the first driving base plate 22 and the second driving base plate 32 are arranged on the top of the plurality of third driving base plates 42 and are vertically distributed with the plurality of third driving base plates 42, the plurality of third moving components 43 are respectively arranged on the plurality of third driving base plates 42, and the output end of the third moving component 43 is connected to the first driving base plate 22 or the second driving base plate 32. Among them, the third moving component 43 includes a third guide rail 431, a third rack 432 and a third driving motor 434. The third guide rail 431 is arranged on the top of the third driving base plate 42, the first driving base plate 22 and the second driving base plate 32 are slidably connected to the third guide rail 431, the third rack 432 is arranged on the side wall of the third driving base plate 42, the third driving motor 434 is arranged on the first driving base plate 22 or the second driving base plate 32, and the output end of the third driving motor 434 is provided with a third gear 433, and the third gear 433 is meshedly connected with the third rack 432. During the operation of the third moving module 4, the third driving assembly drives the first driving base plate 22 or the second driving base plate 32 to slide on the third driving base plate 42, so as to drive the moving side module 11 and the stationary side module 12 to slide relative to each other.

[0095] In this embodiment, by setting the first movable module 2, the second movable module 3 and the third movable module 4, the moving distances of the first driving plate 21 and the second driving plate 31 on the first movable module 2, the second movable module 3 and the third movable module 4 can be controlled according to the specific lengths of the long side and the short side of the door seal, so that the welding device can produce door seals of multiple sizes.

[0096] On the other hand, the present invention also provides a welding method for welding according to any of the welding devices described above, including starting the third movable module 4, driving the two first movable modules 2 and the two second movable modules 3 away from each other, starting the two first movable modules 2 and the two second movable modules 3, driving the two adjacent welding modules 1 away from each other, grabbing the two groups of short side door seals between the two adjacent static side modules 12 respectively, the two adjacent static side modules 12 cooperate to clamp and fix the short side door seals, grabbing the two groups of long side door seals between the two adjacent moving side modules 11 respectively, the two adjacent moving side modules 11 cooperate to clamp and fix the long side door seals, and bending the long side door seals, starting the two first movable modules 2, the two second movable modules 3 and the third movable module 4 to drive the four groups of welding modules 1 to approach each other, starting the mold clamping assembly 13, and driving the four groups of welding modules 1 to weld synchronously. In this embodiment, considering that the clamping assembly 13 drives the moving side module 11 and the stationary side module 12 to approach each other, the clamping assembly 13 will drive the second fixed assembly 114 to slide to both sides, and the long side of the door seal is set to be clamped by the moving side module 11. When the moving side module 11 moves on the second driving base plate 32, the two adjacent moving side modules 11 will approach each other, and the long side of the door seal will bend when the moving side modules 11 approach each other. When the clamping assembly 13 on the moving side module 11 is driven, the long side of the door seal will not be pulled, thereby affecting the welding quality of the door seal.

[0097] Through the above technical scheme, the present invention provides a welding device and a welding method for a door seal, wherein the short side and the long side of the door seal are grasped by the static side module 12 and the dynamic side module 11, and then the static side module 12 and the dynamic side module 11 are driven to move arbitrarily on the guide rail by multiple groups of moving components. After the static side module 12 and the dynamic side module 11 move to the positioning position, the clamping device welds the long side and the short side of the door seal at the same time to realize automatic welding of the door seal, and the dynamic side module 11 and the static side module 12 can move arbitrarily, and the long side and the short side of different sizes can be cut to produce door seals of multiple sizes, thereby reducing the production cost, and the welding device does not require a manipulator to grasp the long side and the short side back and forth, thereby reducing the time waiting for the manipulator to be in place, improving production efficiency, and reducing equipment repair and maintenance costs.

[0098] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications. Including the combination of various specific technical features in any appropriate manner, in order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A door seal welding device, characterized in that: The welding device comprises: Four groups of welding modules, the four groups of welding modules are distributed in a square shape, and the welding modules include: Static edge modules, two adjacent static edge modules cooperate to clamp the short edge of the door seal; A movable edge module, wherein two adjacent movable edge modules cooperate to clamp the long edge of the door seal; A mold clamping assembly, arranged on the moving side mold set, for driving the moving side mold set and the stationary side mold to weld the combined molds; Two groups of first moving modules are respectively arranged at the bottom of two adjacent static side modules, and are used to drive the two adjacent static side modules to move relative to each other; Two groups of second movable modules are arranged in parallel between the two groups of the first movable modules, and the two groups of the second movable modules are respectively arranged at the bottom of the two movable side modules corresponding to the two adjacent static side modules, so as to drive the two movable side modules to move relative to each other; The third movable module, two groups of the first movable modules and two groups of the second movable modules are vertically arranged on the third movable module, and the third movable module is used to drive the two groups of the first movable modules and the two groups of the second movable modules to move relative to each other.

2. The welding device according to claim 1, characterized in that: The moving edge module also includes: A first bottom plate, wherein a pin hole is formed on the first bottom plate; A first fixing assembly, arranged on one side of the first bottom plate; A second fixing component is disposed on the other side of the first bottom plate and is slidably connected to the first bottom plate; a first connecting rod, one end of which is hinged to the second fixing assembly; a second connecting rod, one end of which is hinged to the first fixing assembly, and the other end of which is hinged to the other end of the first connecting rod, and the two rods cooperate to form a V-shaped structure; The first driving assembly is arranged on the first base plate, and the output end of the first driving assembly is hinged to the hinge ends of the first connecting rod and the second connecting rod, and is used to drive the angle between the first connecting rod and the second connecting rod to change for mold welding.

3. The welding device according to claim 2, characterized in that: The static edge module also includes: Second base plate; A third fixing component is arranged at the bottom of the second bottom plate, and a through hole is arranged on the third fixing component, and a latch is arranged in the through hole; A second driving component, wherein the output end of the second driving component is connected to the bottom of the third fixing component, and is used to push out the latch and position it in cooperation with the latch hole.

4. The welding device according to claim 1, characterized in that: Each group of the first mobile modules includes: Two first driving plates are connected to the bottoms of two adjacent static edge modules; A first driving bottom plate, arranged below the first driving plate; The first moving component is arranged on the first driving bottom plate, and the output end of the first moving component is connected to the bottoms of the two first driving plates.

5. The welding device according to claim 4, characterized in that: The first moving component comprises: A first guide rail is arranged on the top of the first driving bottom plate, and two first driving plates are slidably connected to the first guide rail; A first rack, arranged on a side wall of the first driving bottom plate; Two first drive motors are respectively arranged on the two first drive plates. The output end of the first drive motor is provided with a first gear, and the first gear is meshed and connected with the first rack.

6. The welding device according to claim 4, characterized in that: Each group of the second mobile modules includes: Two second driving plates are connected to the bottoms of the two moving side modules corresponding to the two adjacent stationary side modules; a second driving bottom plate, disposed below the second driving plate; The second moving component is arranged on the second driving bottom plate, and the output end of the second moving component is connected to the bottoms of the two second driving plates.

7. The welding device according to claim 6, characterized in that: The second moving component comprises: A second guide rail is arranged on the top of the second driving bottom plate, and two second driving plates are slidably connected to the second guide rail; A second rack, arranged on a side wall of the second driving bottom plate; Two second drive motors are respectively arranged on the two second drive plates. The output end of the second drive motor is provided with a second gear, and the second gear is meshedly connected with the second rack.

8. The welding device according to claim 6, characterized in that: The third mobile module includes: Base; A plurality of third driving base plates are arranged in parallel on the base, the first driving base plate and the second driving base plate are arranged on top of the plurality of third driving base plates and are vertically distributed with the plurality of third driving base plates; A plurality of third moving components are respectively arranged on the plurality of third driving base plates, and an output end of the third moving component is connected to the first driving base plate or the second driving base plate.

9. The welding device according to claim 8, characterized in that: The third moving component comprises: A third guide rail is arranged on the top of the third driving bottom plate, and the first driving bottom plate and the second driving bottom plate are slidably connected to the third guide rail; A third rack, arranged on a side wall of the third driving base plate; The third driving motor is arranged on the first driving base plate or the second driving base plate. The output end of the third driving motor is provided with a third gear, and the third gear is meshed and connected with the third rack.

10. A welding method using the welding device according to any one of claims 1 to 9, characterized in that: include: Starting the third moving module to drive the two first moving modules and the two second moving modules away from each other; Start the two first moving modules and the two second moving modules to drive two adjacent welding modules away from each other; Grab two sets of short-side door seals respectively and place them between two adjacent static-side modules, and the two adjacent static-side modules cooperate to clamp and fix the short-side door seals; Grab two groups of long side door seals respectively and place them between two adjacent moving side modules. The two adjacent moving side modules cooperate to clamp and fix the long side door seals, and bend the long side door seals. Starting two first moving modules, two second moving modules and a third moving module to drive the four groups of welding modules to approach each other; The mold clamping assembly is started to drive the four groups of welding modules to weld synchronously.

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