Solder strip pressing device

Abstract

The utility model belongs to the technical field of battery manufacturing, and discloses a welding strip pressing device which comprises a jig body, a plurality of first pressing needle sets and a plurality of second pressing needle sets, the first pressing needle sets are arranged on the jig body at intervals in the first direction, and the second pressing needle sets are arranged on the jig body at intervals in the second direction. Each first pressing needle group comprises a plurality of first pressing needle units which are arranged at intervals in the second direction; each first pressing needle unit can move relative to the jig body, the second pressing needle sets are arranged on the jig body at intervals in the first direction, and each second pressing needle set comprises a plurality of second pressing needle units arranged at intervals in the second direction; and each second pressing needle unit can move relative to the jig body. According to the welding strip pressing device, on one hand, the pressing and covering effect on the welding strip can be guaranteed, and on the other hand, the phenomenon that the welding strip is pressed to deform in the welding strip laying process can be well avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a welding strip pressing device. Background Art

[0002] For solar cells without main grid and pad points, the thin grid lines and the welding strip form an alloy during welding. Due to the small contact area between the thin grid and the welding strip, the bonding strength of this alloy is not as good as the bonding strength of the alloy formed by the main grid, pad point and welding strip of traditional solar cells. In addition, during the welding process, the welding strip needs to contact each thin grid line to complete the welding. The pressure pins of the clamping fixture used for traditional solar cells are relatively sparse and cannot guarantee the pressure covering effect on the welding strip. At the same time, because one end of the welding strip is clamped and lifted when the clamp is used to clamp one end of the welding strip and lay the welding strip, the use of the pressure pin of the clamping fixture to clamp the welding strip may cause the welding strip to be deformed, thereby affecting the welding effect. Utility Model Content

[0003] The utility model aims to provide a welding strip pressing device, which can ensure the pressing effect on the welding strip on the one hand, and can better avoid the welding strip from being pressed and deformed during the laying process of the welding strip on the other hand.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a solder strip pressing device, comprising: a jig body; a plurality of first pressing needle groups, wherein the plurality of first pressing needle groups are arranged on the jig body at intervals along a first direction, and each of the first pressing needle groups includes a plurality of first pressing needle units arranged at intervals along a second direction; each of the first pressing needle units can move relative to the jig body; a plurality of second pressing needle groups, wherein the plurality of second pressing needle groups are arranged on the jig body at intervals along the first direction, and each of the second pressing needle groups includes a plurality of second pressing needle units arranged at intervals along the second direction; each of the second pressing needle units can move relative to the jig body; wherein: a plurality of the second pressing needle groups are arranged between two adjacent first pressing needle groups; along the vertical direction, the bottom wall of the first pressing needle unit is located below the bottom wall of the second pressing needle unit, so that when the solder strip is pressed, the first pressing needle unit contacts the solder strip before the second pressing needle unit.

[0006] In some embodiments, a distance between a bottom wall of the first needle pressing unit and a bottom wall of the second needle pressing unit is 1 mm-5 mm.

[0007] In some embodiments, the center distance between two adjacent second pressing needle units is less than or equal to 7 mm, and the center distance between adjacent first pressing needle units and second pressing needle units is less than or equal to 7 mm.

[0008] In some embodiments, the first press needle unit and the second press needle unit both include: a press needle body, the press needle body is inserted into the jig body, and one end of the press needle body has a pressure head for contacting the solder strip; a limiter, the limiter is sleeved on the other end of the press needle body 203, and the limiter is stopped at the jig body; an elastic member, the elastic member is sleeved on the press needle body, one end of the elastic member is stopped at the pressure head, and the other end is stopped at the jig body; wherein: the length of the press needle body of the first press needle unit is greater than the length of the press needle body of the second press needle unit.

[0009] In some specific embodiments, the pressure head has a recessed portion recessed toward the fixture body, and a stop surface arranged around the recessed portion, and the stop surface abuts against the welding strip.

[0010] In some embodiments, the fixture body includes: a beam assembly, which is a frame structure, and the first needle pressing unit and the second needle pressing unit are arranged on the beam assembly; a mounting seat, which is arranged at both ends of the beam assembly along the second direction, and the mounting seat is used to be installed on an external bracket.

[0011] In some specific embodiments, the beam assembly includes: a fixed beam, which is installed on the mounting seat; a plurality of main beams, which are arranged at intervals along the first direction, each of which is extended along the second direction, and both ends are respectively connected to two fixed beams; a plurality of auxiliary beams, which are arranged at intervals along the second direction, and both ends of each auxiliary beam are respectively connected to two adjacent main beams; a plurality of cantilever beams, which are arranged at intervals along the second direction, and are divided into two groups, and the two groups of cantilever beams are respectively connected to the side of the two outermost main beams away from the auxiliary beams; wherein: the first needle pressing unit is arranged on the main beam, and the second needle pressing unit is arranged on the auxiliary beam and the cantilever beam.

[0012] In some embodiments, the mounting seat includes: a bottom shell, the bottom shell is provided with a mounting groove, the mounting groove is used to accommodate the end of the beam assembly; and a cover shell, the cover shell is connected to the bottom shell and is used to close the mounting groove.

[0013] In some specific embodiments, the bottom shell and / or the cover shell is connected to the end of the beam assembly via a connecting piece.

[0014] In some specific embodiments, a rubber pad is provided on a side of the bottom shell facing away from the cover shell.

[0015] The beneficial effects of the solder strip clamping device of the utility model are as follows: since the solder strip clamping device includes a plurality of first pressure needle groups and a plurality of second pressure needle groups, the plurality of first pressure needle units and the plurality of second pressure needle units of the entire solder strip clamping device are arranged in multiple rows and columns, and the density is relatively large, thereby ensuring the pressing effect on the solder strip. At the same time, since the bottom wall of the first pressure needle unit is located below the bottom wall of the second pressure needle unit, when the clamping end of the solder strip is clamped by the wire clamp to lay the solder strip, and the solder strip clamping device is pressed down, the first pressure needle unit first presses the solder strip to position the solder strip, and after the wire clamp is opened, the solder strip clamping device continues to descend so that the second pressure needle unit presses the solder strip, so as to realize the synchronous pressing of the first pressure needle unit and the second pressure needle unit. Compared with the technical solution of all pressure needles pressing the solder strip during the laying of the solder strip in the prior art, the solder strip clamping device of this embodiment presses the solder strip through the first pressure needle unit during the laying of the solder strip, which can better avoid the phenomenon of the solder strip being pressed and deformed during the laying of the solder strip.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the welding tape pressing device of the embodiment of the utility model pressing the welding tape when laying the welding tape;

[0018] Figure 2 It is a structural schematic diagram of a welding strip pressing device according to an embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the exploded structure of the welding strip pressing device of an embodiment of the utility model;

[0020] Figure 4 It is a structural schematic diagram of a beam assembly of an embodiment of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the first needle pressing unit of an embodiment of the utility model.

[0022] Reference numerals:

[0023] 100, fixture body; 110, beam assembly; 111, fixed beam; 112, main beam; 113, auxiliary beam; 114, cantilever beam; 120, mounting seat; 121, bottom shell; 1211, mounting groove; 122, cover shell;

[0024] 210, first pressing needle group; 220, second pressing needle group; 201, pressing needle body; 202, pressing head; 2021, recessed portion; 2022, stop surface; 203, limiting member; 204, elastic member;

[0025] 300, connector; 400, rubber pad;

[0026] 10. Welding strip; 101. Clamping end. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] The utility model discloses a welding strip pressing device, referring to Figure 1 and Figure 2As shown, the solder strip pressing device includes a jig body 100, a plurality of first pressing needle groups 210 and a plurality of second pressing needle groups 220, wherein the plurality of first pressing needle groups 210 are arranged on the jig body 100 at intervals along the first direction, and each first pressing needle group 210 includes a plurality of first pressing needle units arranged at intervals along the second direction; each first pressing needle unit can move relative to the jig body 100, and the plurality of second pressing needle groups 220 are arranged on the jig body 100 at intervals along the first direction, and each second pressing needle group 220 includes a plurality of second pressing needle units arranged at intervals along the second direction; each second pressing needle unit can move relative to the jig body 100. A plurality of second pressing needle groups 220 are arranged between two adjacent first pressing needle groups 210; in the vertical direction, the bottom wall of the first pressing needle unit is located below the bottom wall of the second pressing needle unit, so that when the solder strip 10 is pressed, the first pressing needle unit contacts the solder strip 10 before the second pressing needle unit.

[0032] It can be understood that, since the solder tape pressing device includes a plurality of first pressing needle groups 210 and a plurality of second pressing needle groups 220, the plurality of first pressing needle units and the plurality of second pressing needle units of the entire solder tape pressing device are arranged in multiple rows and columns, and the density is relatively high, thereby ensuring the pressing effect on the solder tape 10. At the same time, since the bottom wall of the first pressing needle unit is located below the bottom wall of the second pressing needle unit, when the clamping end 101 of the wire clamp clamps the solder tape 10 to lay the solder tape 10, and the solder tape pressing device is pressed down, the first pressing needle unit first presses the solder tape 10 to position the solder tape 10, and after waiting for the wire clamp to open, the solder tape pressing device continues to descend so that the second pressing needle unit presses the solder tape 10, so as to achieve the synchronous pressing of the first pressing needle unit and the second pressing needle unit to press the solder tape 10. Compared with the technical solution in the prior art in which all the pressing needles press the solder tape during the laying of the solder tape, the solder tape pressing device of this embodiment presses the solder tape 10 through the first pressing needle unit during the laying of the solder tape 10, which can better avoid the phenomenon of the solder tape 10 being pressed and deformed during the laying of the solder tape 10.

[0033] Optionally, the spacing between the bottom wall of the first pressing needle unit and the bottom wall of the second pressing needle unit is 1mm-5mm. It is understandable that if the spacing between the bottom wall of the first pressing needle unit and the bottom wall of the second pressing needle unit is too large, the size of the welding strip clamping device will be increased, which is not conducive to the lightweight design of the welding strip clamping device. If the spacing between the bottom wall of the first pressing needle unit and the bottom wall of the second pressing needle unit is too small, the probability of the second pressing needle unit accidentally touching the welding strip 10 during the laying process of the welding strip 10 will increase, thereby increasing the deformation probability of the welding strip 10. In this embodiment, the spacing between the bottom wall of the first pressing needle unit and the bottom wall of the second pressing needle unit is controlled to be 1mm-5mm, which is not only conducive to the lightweight design of the welding strip clamping device, but also can reduce the probability of the second pressing needle unit accidentally touching the welding strip 10 during the laying process of the welding strip 10, thereby avoiding deformation of the welding strip 10. Of course, in other embodiments of the utility model, the spacing between the bottom wall of the first pressing needle unit and the bottom wall of the second pressing needle unit can also be selected according to actual needs, and is not limited to the above restrictions.

[0034] Optionally, the center distance between two adjacent second pressure pin units is less than or equal to 7 mm, and the center distance between adjacent first pressure pin units and second pressure pin units is less than or equal to 7 mm. Thus, the pressing effect on the welding strip 10 can be further guaranteed. Of course, in other embodiments of the utility model, the center distance between two adjacent second pressure pin units and the center distance between adjacent first pressure pin units and second pressure pin units can be selected according to actual needs. Other parameters are not limited to the above limitations.

[0035] Optionally, the fixture body 100 is made of metal material, and can be made of highly transparent and temperature-resistant materials such as aluminum alloy.

[0036] refer to Figure 2 and Figure 3 As shown, the fixture body 100 includes a beam assembly 110 and a mounting seat 120, the beam assembly 110 is a frame structure, the first pressure needle unit and the second pressure needle unit are arranged on the beam assembly 110, and the mounting seat 120 is arranged at both ends of the beam assembly 110 along the second direction, and the mounting seat 120 is used to be installed on an external bracket. It can be understood that the beam assembly 110 is a frame structure, so that the entire fixture body 100 is formed into a hollow grid structure, thereby increasing the light transmission area of ​​the welding ribbon clamping device, thereby facilitating welding. The mounting seat 120 is used to be installed on the external bracket to facilitate the installation of the entire welding ribbon clamping device and the external bracket.

[0037] It should be noted that the mounting base 120 can be made directly of magnetic material so that it can be directly adsorbed onto the external bracket, or it can be made of ferromagnetic material, which is non-magnetic itself, and a magnet is provided on the external bracket.

[0038] Further, refer to Figure 4As shown, the beam assembly 110 includes two fixed beams 111, three main beams 112, forty auxiliary beams 113 and forty cantilever beams 114. The fixed beam 111 is installed on the mounting seat 120; the three main beams 112 are arranged at intervals along the first direction, each main beam 112 is extended along the second direction, and both ends are respectively connected to the two fixed beams 111; the forty auxiliary beams 113 are arranged at intervals along the second direction, and both ends of each auxiliary beam 113 are respectively connected to two adjacent main beams 112; the forty cantilever beams 114 are arranged at intervals along the second direction, and the forty cantilever beams 114 are divided into two groups, and the two groups of cantilever beams 114 are respectively connected to the sides of the two outermost main beams 112 away from the auxiliary beams 113. The first needle pressing unit is arranged on the main beam 112, and the second needle pressing unit is arranged on the auxiliary beam 113 and the cantilever beam 114. It can be understood that the beam assembly 110 includes a fixed beam 111, a main beam 112, an auxiliary beam 113 and a cantilever beam 114. On the one hand, it can facilitate the installation of the first needle pressing unit and the second needle pressing unit. On the other hand, it can enable the entire beam assembly 110 to form a hollow structure, which is beneficial to increase the light-transmitting area of ​​the beam assembly 110, thereby facilitating the welding of the welding strip 10.

[0039] Optionally, one main beam 112 is connected to the middle of the fixed beam 111, and the other two main beams 112 are respectively located on both sides of the fixed beam 111. Thus, during the laying process of the welding strip 10, the welding strip 10 can be pressed by the first pressing needle unit located in the middle, thereby ensuring the pressing effect of the welding strip 10.

[0040] Optionally, the fixed beam 111 , the main beam 112 , the auxiliary beam 113 and the cantilever beam 114 are integrally formed parts, thereby facilitating the manufacture of the beam assembly 110 .

[0041] Of course, it should be additionally explained here that, in other embodiments of the present invention, the number of the main beam 112 , the auxiliary beam 113 and the cantilever beam 114 can be selected according to actual needs.

[0042] refer to Figure 3 As shown, the mounting seat 120 includes a bottom shell 121 and a cover shell 122. The bottom shell 121 is provided with a mounting groove 1211, and the mounting groove 1211 is used to accommodate the fixing beam 111. The cover shell 122 is connected to the bottom shell 121 and is used to close the mounting groove 1211. It can be understood that the mounting seat 120 includes the bottom shell 121 and the cover shell 122. In the actual assembly process, the fixing beam 111 is inserted into the mounting groove 1211, and then the bottom shell 121 is buckled onto the cover shell 122, and the assembly is very convenient.

[0043] refer to Figure 3As shown, the bottom shell 121 and the cover shell 122 are connected to the fixed beam 111 through the connecting piece 300. It can be understood that in the actual assembly process, the fixed beam 111 is inserted into the mounting groove 1211, and then the fixed beam 111 is fixed to the bottom shell 121 through the connecting piece 300, and then the cover shell 122 is buckled onto the bottom shell 121, and then the cover shell 122 is fixed to the fixed beam 111 through the connecting piece 300. In this way, the bottom shell 121 and the cover shell 122 are both connected to the fixed beam 111, which can improve the connection strength between the mounting seat 120 and the beam assembly 110.

[0044] Optionally, a rubber pad 400 is provided on the side of the bottom shell 121 facing away from the cover shell 122. It is understandable that the thickness of the rubber pad 400 can be adjusted according to actual needs to facilitate adjusting the installation height of the welding ribbon pressing device on the external bracket.

[0045] refer to Figure 5 As shown, the first pressing needle unit and the second pressing needle unit both include a pressing needle body 201, a limiting member 203 and an elastic member 204. The pressing needle body 201 is penetrated through the beam assembly 110, and one end of the pressing needle body 201 has a pressing head 202 for contacting the welding strip 10, the limiting member 203 is sleeved on the other end of the pressing needle body 201, and the limiting member 203 stops at the jig body 100, the elastic member 204 is sleeved on the pressing needle body 201, one end of the elastic member 204 stops at the pressing head 202, and the other end stops at the beam assembly 110; wherein: the length of the pressing needle body 201 of the first pressing needle unit is greater than the length of the pressing needle body 201 of the second pressing needle unit.

[0046] It is understandable that, in the actual installation process, the elastic member 204 is sleeved on the pressing needle body 201, and then the pressing needle body 201 is passed through the main beam 112, the auxiliary beam 113 and the cantilever beam 114, so that the elastic member 204 stops at the beam assembly 110, and then the stopper 203 is installed on the pressing needle body 201. In this way, the pressing needle body 201 can move up and down relative to the main beam 112, the auxiliary beam 113 and the cantilever beam 114, and can prevent the pressing needle body 201 from falling off.

[0047] Optionally, the pressure head 202 has a recessed portion 2021 recessed toward the jig body 100, and a stop surface 2022 arranged around the recessed portion 2021, and the stop surface 2022 abuts against the welding strip 10. It can be understood that the recessed portion 2021 can reduce the contact area between the pressure head 202 and the welding strip 10, and the stop surface 2022 can ensure the pressing of the welding strip 10. The recessed portion 2021 and the stop surface 2022 are provided on the pressure head 202 at the same time, which can ensure the pressing effect of the welding strip 10 while reducing the probability of accidental damage to the welding strip 10.

[0048] Optionally, the initial elastic force of the elastic member 204 of one or more groups of the second pressing needle units on both sides of the beam assembly 110 is greater than the initial elastic force of the remaining pressing needle elastic members 204. Thus, the pressing effect of the second pressing needle units at the edge can be enhanced to achieve better welding. The initial elastic force can be achieved by using elastic members 204 of different specifications or changing the initial pre-compression amount of the elastic member 204.

[0049] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A welding strip pressing device, characterized in that: include: Fixture body(100); A plurality of first pressing needle groups (210), wherein the plurality of first pressing needle groups (210) are arranged on the fixture body (100) at intervals along a first direction, and each of the first pressing needle groups (210) comprises a plurality of first pressing needle units arranged at intervals along a second direction, and each of the first pressing needle units is movable relative to the fixture body (100); a plurality of second pressing needle groups (220), wherein the plurality of second pressing needle groups (220) are arranged on the fixture body (100) at intervals along the first direction, and each of the second pressing needle groups (220) comprises a plurality of second pressing needle units arranged at intervals along the second direction, and each of the second pressing needle units is movable relative to the fixture body (100); Wherein: a plurality of second press needle groups (220) are arranged between two adjacent first press needle groups (210); along the vertical direction, the bottom wall of the first press needle unit is located below the bottom wall of the second press needle unit, so that when the solder strip (10) is compressed, the first press needle unit contacts the solder strip (10) before the second press needle unit.

2. The welding strip pressing device according to claim 1, characterized in that: The distance between the bottom wall of the first needle pressing unit and the bottom wall of the second needle pressing unit is 1 mm-5 mm.

3. The welding strip pressing device according to claim 1, characterized in that: The center distance between two adjacent second pressing needle units is less than or equal to 7 mm, and the center distance between the adjacent first pressing needle unit and the second pressing needle unit is less than or equal to 7 mm.

4. The welding strip pressing device according to claim 1, characterized in that: The first needle pressing unit and the second needle pressing unit both include: A pressing needle body (201), the pressing needle body (201) being inserted into the jig body (100), and one end of the pressing needle body (201) having a pressing head (202) for contacting the welding strip (10); A limiting member (203), wherein the limiting member (203) is sleeved on the other end of the pressing needle body (201), and the limiting member (203) stops at the fixture body (100); An elastic member (204), wherein the elastic member (204) is sleeved on the pressure needle body (201), one end of the elastic member (204) abuts against the pressure head (202), and the other end abuts against the fixture body (100); Wherein: the length of the needle pressing body (201) of the first needle pressing unit is greater than the length of the needle pressing body (201) of the second needle pressing unit.

5. The welding strip pressing device according to claim 4, characterized in that: The pressure head (202) has a recessed portion (2021) recessed toward the jig body (100), and a stop surface (2022) arranged around the recessed portion (2021), and the stop surface (2022) abuts against the welding strip (10).

6. The welding strip pressing device according to any one of claims 1 to 5, characterized in that: The fixture body (100) includes: A beam component (110), the beam component (110) being a frame structure, the first needle pressing unit and the second needle pressing unit being arranged on the beam component (110); A mounting seat (120), wherein the mounting seat (120) is arranged at two ends of the beam assembly (110) along the second direction, and the mounting seat (120) is used to be mounted on an external bracket.

7. The welding strip pressing device according to claim 6, characterized in that: The beam assembly (110) comprises: A fixed beam (111), the fixed beam (111) being mounted on the mounting seat (120); A plurality of main beams (112), wherein the plurality of main beams (112) are arranged at intervals along the first direction, each main beam (112) is extended along the second direction, and two ends of the main beam (112) are respectively connected to the two fixed beams (111); a plurality of auxiliary beams (113), wherein the plurality of auxiliary beams (113) are arranged at intervals along the second direction, and two ends of each auxiliary beam (113) are respectively connected to two adjacent main beams (112); a plurality of cantilever beams (114), the plurality of cantilever beams (114) being arranged at intervals along the second direction, the plurality of cantilever beams (114) being divided into two groups, the two groups of cantilever beams (114) being respectively connected to a side of the two outermost main beams (112) away from the auxiliary beam (113); Wherein: the first needle pressing unit is arranged on the main beam (112), and the second needle pressing unit is arranged on the auxiliary beam (113) and the cantilever beam (114).

8. The welding strip pressing device according to claim 6, characterized in that: The mounting seat (120) comprises: A bottom shell (121), the bottom shell (121) being provided with a mounting groove (1211), the mounting groove (1211) being used to accommodate an end portion of the beam assembly (110); A cover shell (122), the cover shell (122) is connected to the bottom shell (121) and is used to close the installation groove (1211).

9. The welding strip pressing device according to claim 8, characterized in that: The bottom shell (121) and / or the cover shell (122) are connected to the end of the beam assembly (110) via a connecting piece (300).

10. The welding strip pressing device according to claim 8, characterized in that: A rubber pad (400) is provided on a side of the bottom shell (121) facing away from the cover shell (122).

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