A capsule filter welding device

Abstract

The application discloses a capsule filter welding device, and relates to the technical field of filter processing equipment, which comprises a welding table, a first clamping assembly and a second clamping assembly are slidably connected to the welding table, the first clamping assembly corresponds to the second clamping assembly, the first clamping assembly is used for clamping a first shell, the second clamping assembly is used for clamping a filter core, the welding table is connected with a first driving structure, the first driving structure is used for driving the first clamping assembly and the second clamping assembly to slide in the direction of approaching or moving away from each other, the welding table is connected with a first heating assembly, the first heating assembly is used for heating the first shell and the filter core, the welding table is connected with a welding mechanism, and the welding mechanism is used for welding the first shell and a second shell. Since the first clamping assembly corresponds to the second clamping assembly, the first shell and the filter core are accurately positioned, and the assembling effect is improved.

Description

Technical Field

[0001] This application relates to the technical field of filter processing equipment, and in particular to a bladder filter welding apparatus. Background Technology

[0002] A capsule filter is a deep filtration device consisting of a filter bag shaped like a "pocket" or "capsule" installed inside a sealed pressure vessel (filter housing) to efficiently remove particulate impurities from liquids.

[0003] Combination Figure 1 and Figure 2 As shown, the capsule filter 7 includes a first housing 71, a second housing 72, and a filter element 73. A protruding ring 711 is provided on one side of the first housing 71, and a groove 721 is provided on the second housing 72. The protruding ring 711 mates with the groove 721. Positioning portions 712 are provided on the outer circumferential surfaces of both the first and second housings. During the assembly of the capsule filter, one side of the filter element needs to be heated, followed by the bottom wall of the first housing. Finally, the filter element is bonded to the bottom of the first housing. Then, the inner walls of the protruding ring and the groove are heated, bonding the protruding ring to the inner wall of the groove, thus assembling the capsule filter. During the assembly of the filter element and the first housing, because it relies entirely on manual operation, it is difficult to accurately control their positions, and deviations between the filter element and the first housing are very likely to occur. Once a deviation occurs, it will seriously affect the assembly effect of the capsule filter, leading to a reduced yield, which needs improvement. Utility Model Content

[0004] The purpose of this application is to provide a bladder filter welding device to improve the assembly effect of the bladder filter.

[0005] This application provides a bladder filter welding device with the following technical solution: It includes a welding table, on which a first clamping assembly and a second clamping assembly are slidably connected. The first clamping assembly corresponds to the second clamping assembly. The first clamping assembly is used to clamp a first housing, and the second clamping assembly is used to clamp a filter element. The welding table is connected to a first driving structure, which is used to drive the first clamping assembly and the second clamping assembly to slide towards each other or away from each other. The welding table is connected to a first heating assembly, which is used to heat the first housing and the filter element. The welding table is connected to a welding mechanism, which is used to weld the first housing and the second housing.

[0006] By adopting the above technical solution, the first housing is placed at the first clamping assembly, which clamps the first housing. The filter element is placed at the second clamping assembly, which clamps the filter element. Because the first and second clamping assemblies correspond, the first housing and filter element are precisely positioned. The first heating assembly heats the first housing and filter element. After heating, the first driving structure drives the first and second clamping assemblies to slide closer together until one side of the filter element abuts against the bottom wall of the first housing. After a period of time, the assembly of the filter element and the first housing is completed, improving the assembly effect. The welding mechanism can weld the first and second housings, completing the assembly of the capsule filter.

[0007] Optionally, the first heating assembly includes a first carrier plate slidably connected to the welding table and a first driving member connected to the welding table. The first carrier plate is located between the first clamping assembly and the second clamping assembly. The first driving member is used to drive the first carrier plate to move so that the first carrier plate corresponds to or is offset from the first clamping assembly. The first carrier plate is connected to a first heating element and a second heating element. The first heating element is used to heat the first housing, and the second heating element is used to heat the filter element.

[0008] By adopting the above technical solution, after the first clamping assembly clamps the first housing and the second clamping assembly clamps the filter element, the first driving member drives the first carrier plate to slide, so that the first carrier plate corresponds to the first clamping assembly, that is, the first housing corresponds to the first heating element, and the filter element corresponds to the second heating element. The first driving structure drives the first clamping assembly and the second clamping assembly to slide towards each other until the bottom wall of the first housing abuts against the first heating element, and one side of the filter element abuts against the second heating element, thereby achieving heating of the first housing and the filter element. The first driving structure drives the first clamping assembly and the second clamping assembly to slide away from each other, so that the first housing separates from the first heating element, and the filter element separates from the second heating element. The first driving member drives the first carrier plate to slide, so that the first carrier plate is misaligned with the first clamping assembly, preventing the first carrier plate from hindering the adhesion between the first housing and the filter element.

[0009] Optionally, the first clamping assembly includes a fixed base, a movable base slidably connected to the fixed base, and a second driving member connected to the fixed base. The fixed base is provided with a mounting groove for engaging with the first housing, and the second driving member is used to drive the movable base to slide toward or away from the mounting groove.

[0010] By adopting the above technical solution, the first housing is placed in the mounting groove, and the outer surface of the first housing fits against the inner wall of the mounting groove. The mounting groove plays a positioning role for the installation of the first housing, so that the first housing is accurately installed in the corresponding position. The second driving component drives the movable seat to slide towards the mounting groove until the movable seat abuts against the first housing. The first housing is clamped by the movable seat and the inner wall of the mounting groove, thereby fixing the first housing on the fixed seat.

[0011] Optionally, the fixing seat is provided with a positioning groove that communicates with the mounting groove, and the positioning groove is used to cooperate with the positioning part of the first housing.

[0012] By adopting the above technical solution, when the first housing is installed in the mounting groove, the positioning part of the first housing is engaged in the positioning groove, and the outer surface of the positioning part is in contact with the inner wall of the positioning groove. The cooperation between the positioning part and the positioning groove restricts the rotation of the first housing, so that the first housing is accurately installed on the fixed base.

[0013] Optionally, the first driving structure includes two lifting plates slidably connected to the welding table and two third driving members connected to the welding table. The lifting plates and the third driving members correspond one-to-one. The first carrier plate is located between the two lifting plates. The first clamping assembly and the second clamping assembly are respectively connected to the opposite side of the two lifting plates. The third driving member is used to drive the lifting plate to slide towards or away from the other lifting plate.

[0014] By adopting the above technical solution, the third driving component drives the corresponding lifting plate to slide towards or away from another lifting plate, thereby realizing that the first clamping assembly and the second clamping assembly slide towards or away from each other.

[0015] Optionally, the lifting plate is connected to a guide column, and the welding table is provided with a guide hole for sliding cooperation with the guide column.

[0016] By adopting the above technical solution, when the lifting plate slides, the sliding cooperation between the guide column and the guide hole plays a guiding and limiting role in the sliding of the lifting plate, thereby improving the stability of the lifting plate sliding.

[0017] Optionally, a controller is also included. Each of the two lifting plates is connected to a first positioning post on one side facing each other. The first positioning posts on the two lifting plates correspond one-to-one. One end of one of the first positioning posts is connected to a first control sensor. The first control sensor and the third drive unit are both electrically connected to the controller. When the first control sensor abuts against the other first positioning post, the first control sensor outputs a signal to the controller. The controller receives the signal and controls the third drive unit to close.

[0018] By adopting the above technical solution, when the two lifting plates move toward each other, the two first positioning columns slide toward each other until the first control sensor abuts against one of the first positioning columns. The first control sensor outputs a signal to the controller, the controller receives the signal and controls the third driving component to close, so that the two lifting plates stop moving, that is, one side of the filter element abuts against the bottom wall of the first housing, improving the movement accuracy of the filter element and the first housing, and preventing the filter element and the first housing from moving too little or too much.

[0019] Optionally, a second positioning post is connected to the side of the first carrier plate away from the first control sensor. The first positioning post and the second positioning post correspond one-to-one. The second positioning post is connected to a second control sensor. The second control sensor is electrically connected to the controller. When the second control sensor abuts against one of the first positioning posts, the second control sensor outputs a signal to the controller. The controller receives the signal and controls the third drive to shut down.

[0020] By adopting the above technical solution, when the first carrier plate corresponds to the first clamping assembly and the two lifting plates move towards each other, the two first positioning posts slide along with the sliding of the lifting plates until the second control sensor abuts against one of the first positioning posts. The second control sensor outputs a signal to the controller, the controller receives the signal and controls the third driving component to close, so that the two lifting plates stop moving. That is, one side of the first housing abuts against the first heating element, and one side of the filter element abuts against the second heating element, thereby improving the movement accuracy of the filter element and the first housing and preventing insufficient or excessive movement of the filter element and the first housing.

[0021] Optionally, the welding table is connected to a slide rail, and the first carrier plate is provided with a slide groove for sliding and engaging with the slide rail.

[0022] By adopting the above technical solution, when the first carrier plate slides, the sliding groove and the sliding rail cooperate to guide and limit the sliding of the first carrier plate, thereby improving the stability of the sliding of the first carrier plate.

[0023] Optionally, the welding mechanism includes a third clamping assembly and a fourth clamping assembly slidably connected to the welding table. The third clamping assembly and the fourth clamping assembly correspond to each other. The third clamping assembly is used to clamp the first housing, and the fourth clamping assembly is used to clamp the second housing. The welding table is connected to a second driving structure, which is used to drive the third clamping assembly and the fourth clamping assembly to slide towards each other or away from each other. The welding table is connected to a second heating assembly, which is used to heat the first housing and the second housing.

[0024] By adopting the above technical solution, the first housing with the filter element bonded to it is placed at the third clamping assembly, which clamps the first housing. The second housing is then placed at the fourth clamping assembly, which clamps the second housing. Because the third and fourth clamping assemblies correspond, the first and second housings are precisely positioned. The second heating assembly heats the first and second housings. After the first and second housings are heated, the second driving structure drives the third and fourth clamping assemblies to slide closer to each other until the convex ring of the first housing abuts against the inner wall of the groove of the second housing. After a period of time, the assembly of the first and second housings is completed, improving the assembly effect.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. Since the first clamping component corresponds to the second clamping component, the first housing and the filter element are accurately positioned, improving the assembly effect.

[0026] 2. The first control sensor abuts against one of the first positioning posts. The first control sensor outputs a signal to the controller. The controller receives the signal and controls the third drive component to close, so that the two lifting plates stop moving. That is, one side of the filter element abuts against the bottom wall of the first housing, improving the movement accuracy of the filter element and the first housing and preventing insufficient or excessive movement of the filter element and the first housing. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the filter.

[0028] Figure 2 This is a schematic diagram of the overall structure of the second shell.

[0029] Figure 3 This is a schematic diagram of the overall structure of an embodiment of this application.

[0030] Figure 4 yes Figure 3 An enlarged view of region A.

[0031] Figure 5 This is a partial structural schematic diagram of an embodiment of this application.

[0032] Figure 6 yes Figure 5 A magnified view of region B.

[0033] Explanation of reference numerals in the attached drawings: 1. Welding table; 11. Slide rail; 2. First clamping assembly; 21. Fixed seat; 211. Mounting groove; 212. Positioning groove; 22. Movable seat; 23. Second driving component; 3. Second clamping assembly; 4. First driving structure; 41. Lifting plate; 411. Guide post; 412. First positioning post; 413. First control sensor; 5. First heating assembly; 51. First carrier plate; 511. Second positioning post; 512. Second control sensor; 52. First driving component; 53. First heating component; 54. Second heating component; 6. Welding mechanism; 61. Third clamping assembly; 62. Fourth clamping assembly; 63. Second driving structure; 64. Second heating assembly; 7. Filter; 71. First housing; 711. Protruding ring; 712. Positioning part; 72. Second housing; 721. Groove; 73. Filter element. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 3 - Appendix Figure 6 This application will be described in further detail.

[0035] This application discloses a capsule filter welding device.

[0036] Combination Figure 3 and Figure 4 As shown, the system includes a welding table 1, with a first clamping assembly 2 and a second clamping assembly 3 slidably connected to it. The first clamping assembly 2 and the second clamping assembly 3 are vertically aligned. A first driving structure 4 is connected to the welding table 1, driving the first clamping assembly 2 and the second clamping assembly 3 to slide towards or away from each other. The first driving structure 4 includes two lifting plates 41 slidably connected to the welding table 1 and two third driving components fixedly connected to the welding table 1. The lifting plates 41 correspond one-to-one with the third driving components. Each third driving component is externally connected to a controller, and the signal output terminal of the controller is connected to the signal input terminal of the third driving component. The side of the lifting plate 41 closest to the third driving component is fixedly connected to the output terminal of the third driving component. The two lifting plates 41 are located between the two third driving components, and the third driving components drive the corresponding lifting plate 41 to slide towards or away from the other lifting plate 41. Four guide posts 411 are fixedly connected to the side of the two lifting plates 41 that are separated from each other. The welding table 1 has guide grooves that correspond one-to-one with the guide posts 411, and the guide posts 411 slide in cooperation with the guide grooves.

[0037] Combination Figure 4 , Figure 5 and Figure 6As shown, the first clamping assembly 2 and the second clamping assembly 3 are located on opposite sides of the two lifting plates 41, with the first clamping assembly 2 located below and the second clamping assembly 3 located above. The first clamping assembly 2 is used to clamp the first housing 71, and the second clamping assembly 3 is used to clamp the filter element 73. The first clamping assembly 2 and the second clamping assembly 3 have the same structure and achieve the same effect, only their dimensions are different and can be modified according to actual needs. The first clamping assembly 2 is described as an example. The first clamping assembly 2 includes a fixed seat 21 fixedly connected to the lifting plate 41, a movable seat 22 slidably connected to the fixed seat 21, and a second driving member 23 fixedly connected to the fixed seat 21. The upper surface of the fixed seat 21 is provided with a mounting groove 211. The first housing 71 is inserted into the mounting groove 211 and fits against the inner wall of the mounting groove 211. The second driving member 23 is a cylinder. The signal output terminal of the controller is connected to the signal input terminal of the second driving member 23. The side of the movable seat 22 near the second driving member 23 is fixedly connected to the output terminal of the second driving member 23. The side of the movable seat 22 near the mounting groove 211 is in the shape of an inner arc. The second driving member 23 drives the movable seat 22 to slide towards or away from the mounting groove 211. The fixed base 21 has two positioning grooves 212 that communicate with the mounting groove 211. The positioning part 712 of the first housing 71 is inserted into the positioning groove 212 and fits against the inner wall of the positioning groove 212, thereby realizing the positioning and installation of the first housing 71.

[0038] Combination Figure 3 and Figure 4As shown, the welding table 1 is connected to a first heating component 5. The first heating component 5 is used to heat the bottom wall of the first housing 71 and one side of the filter element 73. The first heating component 5 includes a first carrier plate 51 slidably connected to the welding table 1 and a first driving component 52 fixedly connected to the welding table 1. The welding table 1 is fixedly connected to two slide rails 11. The first carrier plate 51 has a sliding groove corresponding to each slide rail 11. The slide rail 11 is engaged with the sliding groove and slides in cooperation with the sliding groove. The first carrier plate 51 is located between two lifting plates 41 and between the first clamping component 2 and the second clamping component 3. The sliding direction of the first carrier plate 51 is perpendicular to the sliding direction of the lifting plate 41. The first driving component 52 is a cylinder. The signal output terminal of the controller is connected to the signal input terminal of the first driving component 52. The side of the first carrier plate 51 closest to the first driving component 52 is fixedly connected to the output terminal of the first driving component 52. The first carrier plate 51 slides through the first driving component 52, so that the first carrier plate 51 corresponds to or is offset from the lifting plate 41. A first heating element 53 is fixedly connected to the side of the first carrier plate 51 near the first clamping assembly 2. The first heating element 53 corresponds vertically to the first clamping assembly 2. A second heating element 54 is fixedly connected to the side of the first carrier plate 51 near the second clamping assembly 3. The second heating element 54 corresponds vertically to the second clamping assembly 3. The first heating element 53 and the second heating element 54 have different shapes but perform the same function. Taking the first heating element 53 as an example, the first heating element 53 is a heating plate. A heating tube is fixedly connected inside the heating plate. When current passes through the heating tube, the resistance wire inside it generates high temperature. The heat is transferred to the heating plate through thermal conduction, so that the heating plate heats up evenly.

[0039] Combination Figure 3 and Figure 4As shown, each of the two lifting plates 41 has a first positioning post 412 fixedly connected to one side facing each other. The two first positioning posts 412 are vertically aligned. The first positioning post 412 located above is fixedly connected to a first control sensor 413. The first control sensor 413 is electrically connected to the controller. When the first control sensor 413 abuts against the other first positioning post 412, the first control sensor 413 outputs a signal to the controller. The controller receives the signal and outputs a signal to the third drive component, controlling the third drive component to close, so that the lifting plate 41 stops moving. When the lifting plate 41 stops moving, one side of the filter element 73 abuts against the bottom wall of the first housing 71, so that the filter element 73 and the first housing 71 move precisely to the corresponding position. Second positioning posts 511 are fixedly connected to both opposite sides of the first carrier plate 51. The second positioning posts 511 correspond one-to-one with the first positioning posts 412. The second positioning posts 511 located at the bottom are fixedly connected to the second control sensor 512. The second control sensor 512 is electrically connected to the controller. When the second control sensor 512 abuts against the first positioning post 412, the second control sensor 512 outputs a signal to the controller. The controller receives the signal and outputs a signal to the third drive component, controlling the third drive component to close, so that the lifting plate 41 stops moving. When the lifting plate 41 stops moving, the bottom wall of the first housing 71 abuts against the first heating element 53, and one side of the filter element 73 abuts against the second heating element 54, so that the filter element 73 and the first housing 71 move accurately to the corresponding positions.

[0040] like Figure 3 As shown, the welding table 1 is connected to a welding mechanism 6, which is used to weld the first housing 71 and the second housing 72 together. The welding mechanism 6 includes a third clamping assembly 61 and a fourth clamping assembly 62 slidably connected to the welding table 1. The third clamping assembly 61 and the fourth clamping assembly 62 are vertically aligned. The third clamping assembly 61 is used to clamp the first housing 71, and the fourth clamping assembly 62 is used to clamp the second housing 72. The structures of the third clamping assembly 61 and the fourth clamping assembly 62 are the same as those of the first clamping assembly 2, and they perform the same functions, so they will not be described in detail. The welding table 1 is connected to a second driving structure 63, which drives the third clamping assembly 61 and the fourth clamping assembly 62 to slide towards or away from each other. The second driving structure 63 has the same structure as the first driving structure 4, and it performs the same functions, so it will not be described in detail. The welding station 1 is connected to a second heating component 64, which is used to heat the first housing 71 and the second housing 72. The second heating component 64 has the same structure as the first heating component 5 and performs the same function, so it will not be described in detail.

[0041] The implementation principle of a capsule filter welding device according to an embodiment of this application is as follows: The first housing 71 is placed at the first clamping assembly 2, and the first clamping assembly 2 clamps the first housing 71. The filter element 73 is placed at the second clamping assembly 3, and the second clamping assembly 3 clamps the filter element 73. The first housing 71 and the filter element 73 are vertically aligned, and the first housing 71 is aligned with the first heating element 53, and the filter element 73 is aligned with the second heating element 54. Two third driving components drive two lifting plates 41 to slide towards each other, causing the bottom wall of the first housing 71 to abut against the first heating element 53, and one side of the filter element 73 to abut against the second heating element 54, thereby heating the first housing 71 and the filter element 73. After the first housing 71 and the filter element 73 are heated, the third driving components drive the two lifting plates 41 to slide away from each other, causing the first housing 71 to separate from the first heating element 53 and the filter element 73 to separate from the second heating element 54. The first driving component 52 drives the first carrier plate 51 to slide, causing the first carrier plate 51 to be misaligned with the lifting plates 41, preventing the first carrier plate 51 from affecting the adhesion between the first housing 71 and the filter element 73. The third driving components drive the two lifting plates 41 to slide towards each other, causing the first housing 71 to abut against the filter element 73, thereby achieving adhesion between the first housing 71 and the filter element 73. The bonding method of the first housing 71 and the second housing 72 is the same as the bonding method of the first housing 71 and the filter element 73, so it will not be described again.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A welding device for a capsule filter, characterized in that: The assembly includes a welding table (1), which is slidably connected to a first clamping assembly (2) and a second clamping assembly (3). The first clamping assembly (2) corresponds to the second clamping assembly (3). The first clamping assembly (2) is used to clamp the first housing (71), and the second clamping assembly (3) is used to clamp the filter element (73). The welding table (1) is connected to a first driving structure (4), which is used to drive the first clamping assembly (2) and the second clamping assembly (3) to slide towards each other or away from each other. The welding table (1) is connected to a first heating assembly (5), which is used to heat the first housing (71) and the filter element (73). The welding table (1) is connected to a welding mechanism (6), which is used to weld the first housing (71) and the second housing (72).

2. The bladder filter welding device according to claim 1, characterized in that: The first heating assembly (5) includes a first carrier plate (51) slidably connected to the welding table (1) and a first driving member (52) connected to the welding table (1). The first carrier plate (51) is located between the first clamping assembly (2) and the second clamping assembly (3). The first driving member (52) is used to drive the first carrier plate (51) to move so that the first carrier plate (51) corresponds to or is offset from the first clamping assembly (2). The first carrier plate (51) is connected to a first heating element (53) and a second heating element (54). The first heating element (53) is used to heat the first housing (71), and the second heating element (54) is used to heat the filter element (73).

3. The bladder filter welding device according to claim 1, characterized in that: The first clamping assembly (2) includes a fixed base (21), a movable base (22) slidably connected to the fixed base (21), and a second driving member (23) connected to the fixed base (21). The fixed base (21) is provided with a mounting groove (211) for cooperating with the first housing (71). The second driving member (23) is used to drive the movable base (22) to slide towards or away from the mounting groove (211).

4. The bladder filter welding device according to claim 3, characterized in that: The fixing base (21) is provided with a positioning groove (212) that communicates with the mounting groove (211), and the positioning groove (212) is used to cooperate with the positioning part (712) of the first housing (71).

5. The bladder filter welding device according to claim 2, characterized in that: The first driving structure (4) includes two lifting plates (41) slidably connected to the welding table (1) and two third driving members connected to the welding table (1). The lifting plates (41) and the third driving members correspond one-to-one. The first carrier plate (51) is located between the two lifting plates (41). The first clamping assembly (2) and the second clamping assembly (3) are respectively connected to the opposite side of the two lifting plates (41). The third driving member is used to drive the lifting plate (41) to slide towards or away from the other lifting plate (41).

6. The bladder filter welding apparatus according to claim 5, characterized in that: The lifting plate (41) is connected to a guide column (411), and the welding table (1) is provided with a guide hole, which is used to slide and cooperate with the guide column (411).

7. The bladder filter welding apparatus according to claim 5, characterized in that: It also includes a controller. Each of the two lifting plates (41) is connected to a first positioning post (412) on one side facing each other. The first positioning posts (412) on the two lifting plates (41) correspond one to one. One end of one of the first positioning posts (412) is connected to a first control sensor (413). The first control sensor (413) and the third drive are both electrically connected to the controller. When the first control sensor (413) abuts against the other first positioning post (412), the first control sensor (413) outputs a signal to the controller. The controller receives the signal and controls the third drive to close.

8. The bladder filter welding apparatus according to claim 7, characterized in that: The first carrier plate (51) is connected to a second positioning post (511) on the side away from the first control sensor (413). The first positioning post (412) corresponds to the second positioning post (511) one by one. The second positioning post (511) is connected to a second control sensor (512). The second control sensor (512) is electrically connected to the controller. When the second control sensor (512) abuts against one of the first positioning posts (412), the second control sensor (512) outputs a signal to the controller. The controller receives the signal and controls the third drive to close.

9. The bladder filter welding device according to claim 2, characterized in that: The welding table (1) is connected to a slide rail (11), and the first carrier plate (51) is provided with a sliding groove, which is used to slide and cooperate with the slide rail (11).

10. The bladder filter welding device according to claim 1, characterized in that: The welding mechanism (6) includes a third clamping assembly (61) and a fourth clamping assembly (62) slidably connected to the welding table (1). The third clamping assembly (61) and the fourth clamping assembly (62) correspond to each other. The third clamping assembly (61) is used to clamp the first housing (71), and the fourth clamping assembly (62) is used to clamp the second housing (72). The welding table (1) is connected to a second driving structure (63). The second driving structure (63) is used to drive the third clamping assembly (61) and the fourth clamping assembly (62) to slide towards each other or away from each other. The welding table (1) is connected to a second heating assembly (64). The second heating assembly (64) is used to heat the first housing (71) and the second housing (72).

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