Solder strip flattening mechanism

Abstract

The utility model discloses a solder strip flattening mechanism, and relates to the technical field of photovoltaic cell production equipment, the solder strip flattening mechanism comprises a pressure head, a pressure bearing seat, a flattening piece and a driving piece, the driving piece can drive the pressure head to move towards the pressure bearing seat through the flattening piece; wherein the pressing head is provided with a first locking piece, the flattening piece is provided with a second locking piece, the pressing head is connected to the flattening piece through cooperation of the first locking piece and the second locking piece, and the pressing head and the flattening piece are detachably connected.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cell production equipment, in particular to a welding strip flattening mechanism. Background Art

[0002] The photovoltaic cell string is formed by stacking the welding strips and the cells in a predetermined order and then welding them together. Two adjacent cells are connected together by a set of welding strips. Specifically, the first part of the welding strip is welded to the main grid line on the front of the previous cell, and the second part of the welding strip is welded to the main grid line on the back of the next cell. In order to make the welding strip fit the main grid line on the surface of the cell, the area between the first part and the second part of the welding strip needs to be flattened.

[0003] The traditional welding strip flattening device includes a driving part, a flattening part and a bearing seat. When the welding strip passes between the flattening part and the pressure bearing seat, the driving part drives the flattening part to descend, pressing the welding strip against the pressure bearing seat to flatten the welding strip. The pressure head of the flattening part will be worn after long-term work, resulting in poor movement accuracy of the flattening part, which affects the flattening effect of the welding strip. At this time, the equipment needs to be maintained. However, the pressure head and the main body of the existing flattening part are made of one-piece forging, and the entire flattening part needs to be directly replaced, which is troublesome to maintain and has high maintenance costs. Utility Model Content

[0004] The utility model aims to provide a welding strip flattening mechanism to solve the problem in the prior art that the pressure head and the main body of the flattening piece are integrally forged, which is troublesome to maintain and has high maintenance cost.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] The utility model provides a welding strip flattening mechanism, which comprises a pressure head, a pressure bearing seat, a flattening piece and a driving piece, wherein the pressure head is detachably connected to the flattening piece, and the driving piece can drive the pressure head to move toward the pressure bearing seat through the flattening piece;

[0007] Wherein, the pressure head is provided with a first locking piece, and the flattening piece is provided with a second locking piece, and the pressure head is connected to the flattening piece through the cooperation of the first locking piece and the second locking piece.

[0008] In one embodiment of the utility model: the welding strip flattening mechanism also includes a third locking member, and the third locking member is used to further lock the first locking member and the second locking member after they are matched and connected.

[0009] In one embodiment of the utility model: the third locking member is a limiting sleeve, which is sleeved on the first locking member and the second locking member to prevent relative sliding after they are matched and connected.

[0010] In one embodiment of the utility model: the first locking member is installed on the upper surface of the pressure head, and the width of the first locking member gradually increases from bottom to top;

[0011] The second locking member is a limiting opening provided at the bottom end of the flattening member, the shape of the limiting opening matches the shape of the first locking member, and the first locking member can be inserted into the second locking member along a horizontal direction.

[0012] In one embodiment of the utility model: the welding strip flattening mechanism also includes a reset member, the driving end of the driving member is configured to abut against the flattening member, and is used to drive the pressure head to move toward the pressure seat by applying a thrust to the flattening member, and the reset member is configured to drive the flattening member to reset when the thrust applied to the flattening member is canceled.

[0013] In one embodiment of the utility model: the driving member abuts against the flattening member through a transmission assembly, and the transmission assembly is configured to amplify the thrust of the driving member on the flattening member.

[0014] In one embodiment of the utility model: the welding strip flattening mechanism further comprises a frame, the transmission assembly comprises a rotating member, the first end of the rotating member is hinged to the frame, the second end of the rotating member is hinged to the driving end of the driving member, the flattening member abuts against the force-applying end of the rotating member, and the driving member drives the force-applying end of the rotating member to rotate around the first end of the rotating member, thereby causing the rotating member to apply thrust to the flattening member;

[0015] The force-applying end of the rotating member is located below the first end of the rotating member, and the distance from the force-applying end of the rotating member to the first end of the rotating member is smaller than the distance from the first end of the rotating member to the second end of the rotating member.

[0016] In one embodiment of the utility model: a detachable abutment member is installed at the force-applying end of the rotating member, and the rotating member abuts against the top end of the flattening member through the abutment member;

[0017] The top of the flattening member is provided with a connected slope surface and a horizontal surface, and when the force-applying end of the rotating member rotates around the first end of the rotating member, the abutting member moves upward in contact with the slope surface of the top of the flattening member to push the flattening member downward;

[0018] When the abutting member moves to the horizontal plane, the pressure head abuts against the pressure bearing seat.

[0019] In one embodiment of the utility model: the abutment member is configured to be cylindrical.

[0020] In one embodiment of the utility model: the transmission assembly further includes a rotating shaft, the first end of the rotating member is rotatably connected to the rotating shaft, and the rotating shaft is detachably connected to the frame.

[0021] In one embodiment of the utility model: a limiting groove for embedding the rotating shaft and a pressing plate for pressing the rotating shaft in the limiting groove are opened on the frame, and the pressing plate is detachably connected to the frame.

[0022] In one embodiment of the utility model: the pressure seat has a pressure plane that cooperates with the pressure head, and the pressure plane is provided with limiting protrusions protruding from the pressure plane on both sides along the conveying direction of the welding strip to be flattened, and the height of the limiting protrusion is the same as the thickness of the welding strip after flattening, and the pressure head is driven by the driving member to abut against the two limiting protrusions of the pressure seat.

[0023] In one embodiment of the utility model: the welding strip flattening mechanism also includes a pressure platform, the pressure platform is provided with a receiving groove for accommodating a pressure seat, and the pressure seat is detachably installed in the receiving groove.

[0024] One or more of the above embodiments of the present invention have at least one or more of the following beneficial effects:

[0025] 1. The present application provides a first locking member and a second locking member so that the pressing head and the flattening member can be detachably connected.

[0026] 2. The present application installs the first locking member on the upper surface of the pressure head, and the width of the first locking member gradually increases from bottom to top, and arranges the second locking member as a limiting opening opened at the bottom end of the flattening member. The shape of the limiting opening matches the shape of the first locking member, so that the first locking member can be inserted into the second locking member in the horizontal direction, and the third locking member adopts a limiting sleeve, which is sleeved on the first locking member and the second locking member to prevent relative sliding after they are matched and connected, so that the pressure head and the flattening member can be detachably connected, and the installation and disassembly between the two are convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings.

[0028] Figure 1 It is a schematic diagram of the overall structure of the welding strip flattening mechanism in one embodiment of the utility model;

[0029] Figure 2 It is a schematic structural diagram of a first locking member, a second locking member and a third locking member in one embodiment of the utility model;

[0030] Figure 3 It is a structural schematic diagram of a transmission assembly in one embodiment of the utility model;

[0031] Figure 4 It is a structural schematic diagram of a pressure bearing seat in one embodiment of the utility model;

[0032] Figure 5 yes Figure 3 A magnified view of the structure at center;

[0033] Figure 6 It is a structural schematic diagram of a pressure-bearing platform in one embodiment of the utility model;

[0034] Figure 7 It is a schematic diagram of the overall structure of the welding strip flattening mechanism from another perspective in one embodiment of the utility model;

[0035] Figure 8 It is a schematic diagram of the overall structure of the welding strip flattening mechanism in one embodiment of the utility model from another perspective.

[0036] Description of reference numerals:

[0037] 10. Pressure head; 101. Pressing plane; 102. First arc-shaped surface; 11. Pressure-bearing seat; 111. Pressure-bearing plane; 112. Second arc-shaped surface; 113. Limiting protrusion; 12. Flattening member; 121. Main body; 122. Top cover; 13. Driving member; 14. First locking member; 15. Second locking member; 16. Third locking member; 17. Resetting member; 18. Frame; 19. Transmission assembly; 191. Rotating member; 192. Rotating shaft; 20. Abutting member; 21. Pressing plate; 22. Pressure-bearing platform; 221. Accommodating groove; 23. Guide column; 24. Lifting plate; 25. Positioning block; 26. Base; 27. Lifting drive device. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that the words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The descriptions of the present invention regarding directions such as "left", "right", "left side", "right side", "upper", "lower", "top", and "bottom" are all defined based on the relationship between the orientations or positions shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. In the description of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] See also Figure 1 and Figure 2 As shown, the utility model provides a welding strip flattening mechanism, which includes a pressure head 10, a pressure seat 11, a flattening piece 12 and a driving piece 13. The pressure head 10 is detachably connected to the flattening piece 12, and the driving piece 13 can drive the pressure head 10 to move toward the pressure seat 11 through the flattening piece 12. Among them, a first locking piece 14 is provided on the pressure head 10, and a second locking piece 15 is provided on the flattening piece 12. The pressure head 10 is connected to the flattening piece 12 through the cooperation of the first locking piece 14 and the second locking piece 15. When the pressure head 10 needs to be replaced, the pressure head 10 can be removed from the flattening piece 12 by separating the first locking piece 14 and the second locking piece 15, so as to avoid replacing the pressure head 10 together with the flattening piece 12, thereby saving the cost of replacing the pressure head 10.

[0042] In one example, in order to facilitate the disassembly between the first locking member 14 and the second locking member 15, the solder strip flattening mechanism further includes a third locking member 16, and the third locking member 16 is used to further lock the first locking member 14 and the second locking member 15 after they are matched and connected.

[0043] Specifically, the first locking member 14 is mounted on the upper surface of the pressure head 10 and is integrally formed with the pressure head 10. The first locking member 14 is generally trapezoidal, and the width of the first locking member 14 gradually increases from bottom to top. The second locking member 15 is a limiting opening opened at the bottom end of the flattening member 12. The shape of the limiting opening matches the shape of the first locking member 14. The first locking member 14 can be inserted into the second locking member 15 in the horizontal direction. The third locking member 16 adopts a limiting sleeve, which is sleeved on the first locking member 14 and the second locking member 15. The first locking member 14 and the second locking member 15 are locked after they are matched, so as to prevent the first locking member 14 and the second locking member 15 from sliding relative to each other in the horizontal direction after they are matched and connected. The limiting sleeve is provided with a notch that allows the second locking member 15 to pass through. When the first locking member 14 and the second locking member 15 need to be separated, the limiting sleeve is first removed to align the notch with the limiting opening, so that the first locking member 14 can be pulled out from the second locking member 15 along the horizontal direction, and the pressing head 10 can be removed from the flattening member 12. When the first locking member 14 and the second locking member 15 are locked, the notch and the limiting opening can be misaligned, which is convenient and quick.

[0044] In one example, the solder strip flattening mechanism also includes a reset member 17, and the driving end of the driving member 13 is configured to abut against the flattening member 12. The driving member 13 drives the pressure head 10 to move toward the pressure seat 11 by applying a thrust to the flattening member 12, so that the pressure head 10 flattens the solder strip to be flattened on the pressure seat 11. When the flattening operation is completed, the driving member 13 cancels the thrust applied to the flattening member 12. At this time, the reset member 17 drives the flattening member 12 to reset, which facilitates the next operation of the pressure head 10.

[0045] Specifically, the welding strip flattening mechanism further includes a frame 18, on which a guide hole is provided, and the flattening member 12 includes a main body 121 which is generally cylindrical and a top cover 122 provided at the top end of the main body 121, the main body 121 is inserted into the guide hole and is slidably connected with the guide hole, and the top cover 122 extends radially from all sides of the main body 121. The reset member 17 is a spring, which is sleeved on the main body 121, and the top end of the spring abuts against the bottom end of the top cover 122, and the bottom end of the spring abuts against the frame 18. When the driving member 13 applies a thrust to the flattening member 12, the flattening member 12 slides downward from the initial position along the axial direction of the guide hole to compress the spring. When the driving member 13 releases the thrust applied to the flattening member 12, the spring rebounds and drives the flattening member 12 to rise to the initial position.

[0046] In one example, the driving member 13 is a cylinder, and the driving member 13 is fixedly mounted on the frame 18 .

[0047] See also Figure 3As shown, in one example, in order to increase the pressure of the pressure head 10 , the driving member 13 abuts against the flattening member 12 through the transmission assembly 19 , so that the transmission assembly 19 amplifies the thrust of the driving member 13 on the flattening member 12 , thereby increasing the pressure of the pressure head 10 .

[0048] Specifically, the transmission assembly 19 includes a rotating member 191, the first end of the rotating member 191 is hinged to the frame 18, the second end of the rotating member 191 is hinged to the driving end of the driving member 13, the top end of the flattening member 12 is in contact with the force-applying end of the rotating member 191, the first end, the second end and the force-applying end are distributed in a triangular shape, and the force-applying end of the rotating member 191 is located below the first end of the rotating member 191, and the distance from the force-applying end of the rotating member 191 to the first end of the rotating member 191 is smaller than the distance from the first end of the rotating member 191 to the second end of the rotating member 191. The driving member 13 drives the second end of the rotating member 191 to descend, and then drives the force-applying end of the rotating member 191 to rotate downward around the first end of the rotating member 191, so that the force-applying end of the rotating member 191 applies a thrust to the flattening member 12, and then the flattening member 12 drives the pressure head 10 to move downward to flatten the welding strip to be flattened.

[0049] In one example, a detachable abutting member 20 is installed at the force-applying end of the rotating member 191. The rotating member 191 is provided with the abutting member 20 abutting against the top end of the flattening member 12, so that the abutting member 20 replaces the friction loss between the rotating member 191 and the flattening member 12 during operation, thereby improving the service life of the rotating member 191. The abutting member 20 and the rotating member 191 are detachably connected, so that the abutting member 20 can be easily replaced. Compared with replacing the rotating member 191, replacing the abutting member 20 is more cost-effective.

[0050] Preferably, the abutment member 20 is a cylinder, and the abutment member 20 is rotatably connected to the force-applying end of the rotating member 191. When the driving member 13 applies a thrust to the flattening member 12 through the rotating member 191, the abutment member 20 rolls on the top end surface of the flattening member 12, thereby reducing the friction loss between the abutment member 20 and the flattening member 12 and increasing the service life of the abutment member 20.

[0051] In one example, in order to improve the descending height ratio between the force-applying end of the rotating member 191 and the flattening member 12, the top of the flattening member 12 is provided with a connected slope surface and a horizontal surface. When the force-applying end of the rotating member 191 rotates around the first end of the rotating member 191, the abutting member 20 moves upward in contact with the slope surface at the top of the flattening member 12 to push the flattening member 12 downward; when the abutting member 20 moves to the horizontal surface, the pressure head 10 abuts against the pressure bearing seat 11. By setting the slope surface, the force-applying end of the rotating member 191 only needs to descend a short distance to push the flattening member 12 to descend a long distance.

[0052] See also Figure 7As shown, in one example, to facilitate disassembly between the rotating member 191 and the frame 18 , the transmission assembly 19 further includes a rotating shaft 192 , a first end of the rotating member 191 is rotatably connected to the rotating shaft 192 , and the rotating shaft 192 is detachably connected to the frame 18 .

[0053] Specifically, a mounting hole is provided on the first end of the rotating member 191, and a bearing is embedded in the mounting hole. By fixing the bearing sleeve on the rotating shaft 192, the first end of the rotating member 191 is rotatably connected to the rotating shaft 192. A limiting groove is provided on the frame 18, and the two ends of the rotating shaft 192 are respectively embedded in the corresponding limiting grooves. The frame 18 is detachably connected with a pressing plate 21 corresponding to the limiting groove by bolts. The pressing plate 21 is used to press the rotating shaft 192 in the corresponding limiting groove. When the rotating member 191 needs to be removed from the frame 18, the pressing plate 21 can be removed from the frame 18 first, and then the rotating shaft 192 can be pulled out from the limiting groove, and the rotating member 191 can be removed from the frame 18 conveniently and quickly.

[0054] See also Figure 4 and Figure 5 As shown, in one example, the bottom end of the pressure head 10 has a downward pressure plane 101 and a first curved surface 102 located on both sides of the front and rear of the downward pressure plane 101, and the top end of the pressure seat 11 has a pressure plane 111 and a second curved surface 112 located on both sides of the front and rear of the pressure plane 111, wherein one of the first curved surface 102 and the second curved surface 112 is a concave curved surface, and the other is a convex curved surface. When the driving member 13 controls the flattening member 12 to descend to a low position, the downward pressure plane 101 on the pressure head 10 presses the solder strip to the pressure plane 111 of the pressure seat 11, flattens the part of the solder strip located between the downward pressure plane 101 and the pressure plane 111, and the first curved surface 102 and the second curved surface 112 cooperate to slightly deform the adjacent part of the flattened part of the solder strip, so that the non-flattened part of the solder strip naturally transitions to the flattened part, thereby preventing the solder strip in this part from being easily broken or flipped.

[0055] In one example, in order to ensure the flattened thickness of the solder strip, the pressure plane 111 is provided with limiting protrusions 113 protruding from the pressure plane 111 on both sides along the conveying direction of the solder strip to be flattened. The height of the limiting protrusion 113 is the same as the thickness of the solder strip after being flattened. The solder strip is located between the two limiting protrusions 113 and is flattened. The pressure head 10 is driven by the driving member 13 to abut against the two limiting protrusions 113 of the pressure seat 11, thereby flattening the solder strip to a preset thickness.

[0056] See also Figure 1 and Figure 6As shown, in one example, a plurality of pressure heads 10 are provided, and the pressure seats 11 are arranged one-to-one corresponding to the pressure heads 10. The welding strip flattening mechanism also includes a pressure platform 22. The pressure platform 22 is provided with a receiving groove 221 for accommodating the pressure seat 11. The number of the receiving grooves 221 and the pressure seats 11 correspond one-to-one. Each pressure seat 11 is limited by being inserted into the corresponding receiving groove 221. When the pressure seat 11 needs to be replaced, it can be directly pulled out from the corresponding receiving groove 221, which is convenient for disassembly.

[0057] In one example, the pressure platform 22 is further provided with a welding strip guide assembly corresponding to the pressure head 10, and each welding strip guide assembly includes two guide pillars 23 arranged in pairs, and a guide gap for the welding strip to pass through is formed between the two guide pillars 23. By providing the welding strip guide assembly, the welding strip is guided so that the welding strip can pass between the corresponding pressure head 10 and the pressure seat 11.

[0058] See also Figure 8 As shown, in one example, the solder strip flattening mechanism further includes a lifting plate 24, a positioning block 25, a base 26 and a lifting drive device 27. The lifting plate 24 is arranged behind the pressure head 10 along the moving direction of the solder strip to be flattened. The positioning blocks 25 correspond to the pressure heads 10 one by one, and each positioning block 25 is fixedly mounted at the bottom of the lifting plate 24 and is located above the solder strip to be flattened. The base 26 is fixedly mounted on the pressure platform 22 and is arranged below the solder strip to be flattened. There are two lifting drive devices 27, both of which are mounted on the frame 18, and the driving ends of the two lifting drive devices 27 are respectively connected to the two ends of the lifting plate 24. Before the pressure head 10 flattens the solder strip, the lifting drive device 27 first drives each positioning block 25 to rise and fall synchronously through the lifting plate 24, presses the solder strip tightly on the base 26, and keeps the solder strip and the solder strip flattening mechanism relatively fixed. At this time, the pressure head 10 in front flattens the specified part of the solder strip to prevent the solder strip from shaking.

[0059] In one example, the lifting drive device 27 is a cylinder.

[0060] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A welding strip flattening mechanism, characterized in that: The welding strip flattening mechanism comprises a pressing head, a pressure bearing seat, a flattening member and a driving member, wherein the pressing head is detachably connected to the flattening member, and the driving member can drive the pressing head to move toward the pressure bearing seat through the flattening member; Wherein, the pressure head is provided with a first locking piece, and the flattening piece is provided with a second locking piece, and the pressure head is connected to the flattening piece through the cooperation of the first locking piece and the second locking piece.

2. A welding strip flattening mechanism according to claim 1, characterized in that: The welding strip flattening mechanism also includes a third locking member, and the third locking member is used to further lock the first locking member and the second locking member after they are matched and connected.

3. A welding strip flattening mechanism according to claim 2, characterized in that: The third locking member is a limiting sleeve, which is sleeved on the first locking member and the second locking member to prevent relative sliding after they are matched and connected.

4. A welding strip flattening mechanism according to claim 3, characterized in that: The first locking member is installed on the upper surface of the pressure head, and the width of the first locking member gradually increases from bottom to top; The second locking member is a limiting opening provided at the bottom end of the flattening member, the shape of the limiting opening matches the shape of the first locking member, and the first locking member can be inserted into the second locking member along a horizontal direction.

5. A welding strip flattening mechanism according to any one of claims 1 to 4, characterized in that: The welding strip flattening mechanism also includes a reset member, the driving end of the driving member is configured to abut against the flattening member, and is used to drive the pressure head to move toward the pressure seat by applying a thrust to the flattening member, and the reset member is configured to drive the flattening member to reset when the thrust applied to the flattening member is cancelled.

6. A welding strip flattening mechanism according to any one of claims 1 to 4, characterized in that: The driving member abuts against the flattening member through a transmission assembly, and the transmission assembly is configured to amplify the thrust of the driving member on the flattening member.

7. A welding strip flattening mechanism according to claim 6, characterized in that: The welding strip flattening mechanism further comprises a frame, the transmission assembly comprises a rotating member, a first end of the rotating member is hinged to the frame, a second end of the rotating member is hinged to the driving end of the driving member, the flattening member abuts against the force-applying end of the rotating member, and the driving member drives the force-applying end of the rotating member to rotate around the first end of the rotating member, thereby causing the rotating member to apply a thrust to the flattening member; The force-applying end of the rotating member is located below the first end of the rotating member, and the distance from the force-applying end of the rotating member to the first end of the rotating member is smaller than the distance from the first end of the rotating member to the second end of the rotating member.

8. A welding strip flattening mechanism according to claim 7, characterized in that: A detachable abutment member is installed at the force-applying end of the rotating member, and the rotating member abuts against the top end of the flattening member through the abutment member; The top of the flattening member is provided with a connected slope surface and a horizontal surface, and when the force-applying end of the rotating member rotates around the first end of the rotating member, the abutting member moves upward in contact with the slope surface of the top of the flattening member to push the flattening member downward; When the abutting member moves to the horizontal plane, the pressure head abuts against the pressure bearing seat.

9. A welding strip flattening mechanism according to claim 8, characterized in that: The abutting member is configured to be cylindrical.

10. A welding strip flattening mechanism according to claim 7, characterized in that: The transmission assembly also includes a rotating shaft, the first end of the rotating member is rotatably connected to the rotating shaft, and the rotating shaft is detachably connected to the frame.

11. A welding strip flattening mechanism according to claim 10, characterized in that: The frame is provided with a limiting groove for embedding the rotating shaft and a pressing plate for pressing the rotating shaft in the limiting groove, and the pressing plate is detachably connected to the frame.

12. A welding strip flattening mechanism according to any one of claims 1 to 4, characterized in that: The pressure seat has a pressure plane that cooperates with the pressure head. The pressure plane is provided with limiting protrusions protruding from the pressure plane on both sides along the conveying direction of the welding strip to be flattened. The height of the limiting protrusion is the same as the thickness of the welding strip after being flattened. The pressure head is driven by the driving member to abut against the two limiting protrusions of the pressure seat.

13. The welding strip flattening mechanism according to claim 1, characterized in that: The welding strip flattening mechanism also includes a pressure-bearing platform, on which a receiving groove for accommodating a pressure-bearing seat is provided, and the pressure-bearing seat is detachably installed in the receiving groove.

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