A solder strip flattening device

Abstract

The application provides a welding strip flattening device, which comprises a mounting seat, a first translation driving part, a mounting bracket, a compression roller assembly and a compression roller driving part. The mounting bracket is slidingly mounted on the mounting seat, and the compression roller assembly comprises a first compression roller and a second compression roller, and the first compression roller is provided with a protruding part in the circumferential direction. The first translation driving part is used for driving the mounting bracket to move, so as to drive the compression roller assembly to reciprocate between a first position and a third position. During the movement of the compression roller assembly from the first position to the third position, the compression roller driving part drives the first compression roller to rotate, so that when the compression roller assembly moves to the second position, the protruding part is driven to the gap, and when the compression roller assembly moves to the third position, the protruding part is again staggered with the gap, so that the protruding part and the second compression roller complete the flattening of the welding strip at the gap. The welding strip flattening device provided by the application does not need to match the traction speed of the traction mechanism with the linear speed of the first compression roller, and only needs to match the driving speed of the first translation driving part.

Description

Technical Field

[0001] This application relates to the field of photovoltaic production equipment, and in particular to a strip flattening device. Background Technology

[0002] Photovoltaic cell strings are constructed by stacking and welding solder ribbons and solar cells together in a predetermined order. A common string structure involves connecting adjacent cells with a set of solder ribbon segments. The first half of the ribbon segment is welded to the front of the preceding cell, and the second half is welded to the back of the following cell. The solder ribbons are typically circular in cross-section. To reduce localized stress on the cell edges caused by the solder ribbons during module lamination, the middle section of the solder ribbon segment needs to be flattened beforehand, i.e., a flat section is pressed out in the middle of the solder ribbon segment.

[0003] One type of flattening process is roller flattening, such as the welding strip flattening device, welding strip processing equipment, and method disclosed in invention patent CN113843550A. The welding strip flattening device includes a drive unit, a flattening drive wheel, and a flattening driven wheel. At least one protrusion is provided on the pressing surface of the flattening drive wheel and / or the flattening driven wheel. The welding strip flattening device is positioned on the unwinding path of the welding strip assembly. A welding strip traction device clamps the end of the welding strip assembly and pulls it out. During the pulling process, the flattening drive wheel and the flattening driven wheel rotate. When the protrusion rotates to the gap, a flat section is pressed onto the welding strip assembly. Subsequently, a welding strip cutting device cuts the welding strip assembly, obtaining a set of welding strip segments with a flat section in the middle.

[0004] Existing welding strip flattening devices are fixedly installed on the welding strip unwinding path, and flatten the welding strip assembly by rotating the flattening drive wheel and the flattening driven wheel during the pulling and moving process. This requires that when the protrusion rotates to the gap, the linear velocity of the flattening drive wheel must be consistent with the pulling speed of the welding strip traction device; otherwise, the welding strip is easily broken. However, because the time taken for the flattening drive wheel to start and for the protrusion to reach the gap is very short, while the welding strip traction device has already reached its maximum speed when pulling the welding strip to the flattening position to the welding strip flattening device, it is difficult for the linear velocities of the flattening drive wheel and the flattening driven wheel to be consistent with the pulling speed of the welding strip traction device in a short time, thus posing a risk of welding strip breakage. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a welding strip flattening device, the detailed technical solution of which is as follows:

[0006] A strip flattening device includes a mounting base, a first translation drive unit, a mounting bracket, a pressure roller assembly, and a pressure roller drive unit, wherein:

[0007] The mounting bracket is slidably mounted on the mounting base along the first direction and is connected to the first translation drive unit disposed on the mounting base.

[0008] The pressure roller assembly includes a first pressure roller and a second pressure roller rotatably mounted on a mounting bracket. Both the first and second pressure rollers extend along a second direction and are arranged vertically. The first pressure roller has at least one protrusion in its circumferential direction. A gap is formed between the first and second pressure rollers for the welding strip to pass through. The welding strip extends along a first direction, and the second direction is perpendicular to the first direction.

[0009] The pressure roller drive unit is mounted on the mounting bracket and is connected to the first pressure roller drive.

[0010] The first translation drive unit is used to drive the mounting bracket to reciprocate along the first direction, so as to drive the pressure roller assembly to reciprocate between the first position and the third position, wherein a second position is also provided between the first position and the third position;

[0011] When the pressure roller assembly is in the first position, the protrusion is offset from the gap.

[0012] During the movement of the pressure roller assembly from the first position to the third position, the pressure roller drive unit is configured to drive the first pressure roller to rotate, so that when the roller assembly moves to the second position, the protrusion is driven to the gap along with the rotation of the first pressure roller, and when the pressure roller assembly moves to the third position, the protrusion is displaced from the gap again, so that the protrusion cooperates with the second pressure roller to flatten the welding strip at the gap.

[0013] The welding strip flattening device provided in this application has a pressure roller assembly mounted on a mounting bracket, which can be driven by a first translation drive unit to translate along the extension direction of the welding strip. Therefore, during the flattening process of the welding strip, the welding strip to be flattened can remain stationary after being pulled into position. Subsequently, the first translation drive unit drives the pressure roller assembly to move from a first position to a third position, while simultaneously driving the first pressure roller to rotate. When the pressure roller assembly moves to the second position, the protrusions on the first pressure roller are moved to the gap as the first pressure roller rotates, thus initiating the flattening of the welding strip at the gap. When the pressure roller assembly continues to move to the third position, the protrusions on the first pressure roller are again moved to a position offset from the gap as the first pressure roller rotates, thus completing the flattening of the welding strip at the gap. Subsequently, the first translation drive unit drives the pressure roller assembly back to the first position.

[0014] As can be seen, the welding strip flattening device provided in this application does not flatten the welding strip during the pulling process. Instead, it first pulls the welding strip into position and keeps it stationary, while the pressure roller assembly translates and rotates relative to the welding strip to perform the flattening operation. Therefore, in the welding strip flattening device of this application, the linear speed of the first pressure roller does not need to match the traction speed of the traction mechanism, but only needs to match the driving speed of the first translation drive. The driving speed of the first translation drive can be unaffected by the speed of the traction mechanism and can be set to a lower speed, so that the linear speed of the first pressure roller can reach the moving speed of the first translation drive in a short time. This ensures that when the protrusion rotates to the gap, the linear speed of the first pressure roller is consistent with the speed of the first translation drive, preventing the welding strip from being pulled apart during the flattening process. In addition, in this application, the first and second pressure rollers can move synchronously under the drive of the first translation drive, which can prevent the flattened section from arching.

[0015] In some embodiments, a drive gear is fixedly installed at one end of the first pressure roller, and a driven gear that meshes with the drive gear is fixedly installed at one end of the second pressure roller. When the first pressure roller rotates, the second pressure roller is driven to rotate in the opposite direction via the drive gear and the driven gear.

[0016] Because a driven gear that meshes with the driving gear is fixedly installed at one end of the second pressure roller, when the pressure roller drive unit drives the first pressure roller to rotate, the second pressure roller rotates in the opposite direction and at the same speed as the first pressure roller. In this way, it can be ensured that the welding strip is stably and evenly rolled by the first and second pressure rollers from both the top and bottom, avoiding slippage, twisting or excessive stretching of the welding strip caused by the speed difference between the first and second pressure rollers.

[0017] In some embodiments, the strip flattening device further includes a cutting mechanism and a traction mechanism disposed along a first direction after the pressure roller assembly, wherein: the traction mechanism includes a traction clamp, and the cutting mechanism includes a cutting blade; the traction clamp is configured to clamp the free end of the strip from the cutting mechanism and to traction the strip away from the cutting mechanism along the first direction such that a strip of predetermined length passes through the slit of the cutting blade, and the middle portion of the strip passing through the slit of the cutting blade has a flattened section flattened by the pressure roller assembly; the cutting blade is configured to cut the strip to obtain a strip segment with a flattened section.

[0018] After the pressure roller assembly completes the flattening operation of the welding strip group under the drive of the pressure roller drive unit, the traction mechanism first pulls the welding strip of a predetermined length out of the cutting mechanism, and the cutting mechanism then cuts the welding strip to obtain a set of welding strip segments with a flat section in the middle for subsequent battery string preparation.

[0019] In some embodiments, the strip flattening device further includes a clamping mechanism disposed between the pressure roller assembly and the cutting mechanism; the clamping mechanism is configured to clamp the strip when the pressure roller assembly flattens the strip, and to release the strip when the traction mechanism pulls the strip.

[0020] When the pressure roller assembly flattens the welding strip, the clamping mechanism clamps the welding strip near the flattening position, thereby ensuring the positional stability of each welding strip during the flattening process and ultimately guaranteeing the uniformity of flattening. Furthermore, after the clamping mechanism releases the welding strip, the flattened section on the welding strip will not exhibit significant side-flipping, ensuring the quality of subsequent welding.

[0021] In some embodiments, the welding strip flattening device further includes a second translation drive unit disposed on the mounting base, and a clamping mechanism is slidably mounted on the mounting base along a first direction and is connected to the second translation drive unit in a transmission manner; before the cutting mechanism cuts the welding strip, the second translation drive unit is configured to drive the clamping mechanism that clamps the welding strip to move away from the cutting mechanism along the first direction, so as to cooperate with the traction mechanism to stretch the welding strip.

[0022] Before the cutting mechanism cuts the welding strip, the second translation drive unit drives the clamping mechanism to move away from the cutting mechanism along the first direction, so that the clamping mechanism and the traction mechanism cooperate to stretch the welding strip, so that the welding strip produces a certain plastic tensile deformation, and prevents the free end of the welding strip from drooping after cutting.

[0023] In some embodiments, the clamping mechanism includes a first clamping plate, a second clamping plate, and a driving member, wherein: both the first clamping plate and the second clamping plate extend along a second direction; the first clamping plate is provided with a plurality of first jaws arranged at intervals along the second direction, and the second clamping plate is provided with a plurality of second jaws corresponding one-to-one with the first jaws, each first jaw and its corresponding second jaw constitute a jaw assembly, and the jaw assembly corresponds one-to-one with the welding strip; the driving member is used to drive the first clamping plate and the second clamping plate to move relative to each other in the second direction, so as to drive each jaw assembly to clamp or release the welding strip.

[0024] By configuring the clamping mechanism in this way, only one drive unit is needed to drive all the gripper assemblies to synchronously clamp and release all the solder strips, thereby reducing drive costs. Furthermore, since each solder strip is clamped by a single gripper assembly, it ensures that all solder strips are effectively clamped, preventing some solder strips from being partially clamped.

[0025] In some embodiments, the strip flattening device further includes a guide mechanism disposed on the mounting bracket. The guide mechanism is located in front of the pressure roller assembly and has a plurality of guide grooves, each guide groove being used to guide a strip.

[0026] By setting a guiding mechanism with guide grooves, the welding strip is guided and pulled, thus preventing the welding strip from shifting position during the pulling process.

[0027] In some embodiments, the strip flattening device further includes a first clamping member and a second clamping member disposed on a mounting bracket, wherein: the first clamping member and the second clamping member are respectively located on the upper and lower sides of the pressure roller assembly; the first clamping member includes at least two clamping rollers spaced apart along a second direction, the axial direction of the clamping rollers being parallel to the second direction, and each clamping roller being rotatably mounted on the mounting bracket; or, the first clamping member includes a clamping roller extending along the second direction, with both ends of the clamping roller being rotatably mounted on the mounting bracket; the second clamping member includes at least two clamping rollers spaced apart along the second direction, the axial direction of the clamping rollers being parallel to the second direction, and each clamping roller being rotatably mounted on the mounting bracket; or, the second clamping member includes a clamping roller extending along the second direction, with both ends of the clamping roller being rotatably mounted on the mounting bracket; the clamping roller in the first clamping member abuts against the first pressure roller; the clamping roller in the second clamping member abuts against the second pressure roller.

[0028] During long-term use, the first and second pressure rollers may arch and deform, affecting the flattening effect. By clamping with the first and second clamping components, radial constraint is achieved on the first and second pressure rollers, thereby preventing deformation of the first and second pressure rollers. Furthermore, the clamping rollers can rotate with the rotation of the first and second pressure rollers without affecting the flattening process.

[0029] In some embodiments, the protrusion is a strip-shaped protrusion extending along the second direction, the strip-shaped protrusion being used to cooperate with the second pressure roller to flatten all the welding strips at the gap, and the surface on the strip-shaped protrusion used to cooperate with the second pressure roller to flatten the welding strips is an arc-shaped surface; or, the protrusion includes a plurality of protrusions spaced apart along the second direction, each protrusion being used to cooperate with the second pressure roller to flatten at least one welding strip at the gap, and the surface on each protrusion used to cooperate with the second pressure roller to flatten the welding strips is an arc-shaped surface.

[0030] Two implementations of the protrusion are provided, both of which can simultaneously flatten all the welding strips. The arc-shaped surface can better cooperate with the second pressure roller to flatten the welding strips, ensuring the flattening quality of the flat section of the welding strip.

[0031] In some embodiments, at least two protrusions are provided, and each protrusion is evenly spaced and arranged on the circumferential surface of the first pressure roller.

[0032] Based on the size of the first and second pressure rollers, and the distance between two adjacent positions of the welding strip that need to be flattened, multiple protrusions are provided on the first pressure roller, which can shorten the travel of the mounting bracket and improve work efficiency. Attached Figure Description

[0033] Figure 1This is a schematic diagram of the welding strip pressing device in the embodiment of this application from a first-view perspective;

[0034] Figure 2 This is a schematic diagram of the welding strip pressing device in the embodiment of this application from a second perspective;

[0035] Figure 3 This is a schematic diagram of the welding strip pressing device in the embodiment of this application from a second perspective;

[0036] Figure 4 for Figure 3 AA section view;

[0037] Figure 5 This is a schematic diagram of the structure of the first pressure roller in one embodiment of this application;

[0038] Figure 6 This is a schematic diagram of the structure of the first pressure roller in another embodiment of this application;

[0039] Figure 7 This is a schematic diagram of the structure of the first pressure roller in another embodiment of this application;

[0040] Figure 8 This is a schematic diagram of the clamping mechanism in the embodiments of this application.

[0041] Figures 1 to 8 Includes:

[0042] Mounting base 1;

[0043] First translation drive unit 2;

[0044] Mounting bracket 3;

[0045] Pressure roller assembly 4; first pressure roller 41, second pressure roller 42, protrusion 43, driving gear 44, driven gear 45, strip-shaped protrusion 431, and protrusion 432;

[0046] Pressure roller drive unit 5;

[0047] Cutting mechanism 6;

[0048] Clamping mechanism 7: First clamping plate 71, second clamping plate 72, first gripper 73, second gripper 74;

[0049] Second translation drive unit 8;

[0050] Guiding mechanism 9;

[0051] First clamping element 10;

[0052] Second clamping component 110. Detailed Implementation

[0053] To make the above-mentioned objects, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0054] As described in the background section, existing welding strip flattening devices are fixedly installed on the welding strip unwinding path and flatten the welding strip group by rotating the flattening drive wheel and the flattening driven wheel during the pulling and moving process. This requires that when the protrusion rotates to the gap, the linear speed of the flattening drive wheel must be consistent with the pulling speed of the welding strip traction device; otherwise, the welding strip is easily broken. However, since the time taken for the flattening drive wheel to start and for the protrusion to reach the gap is very short, while the welding strip traction device has already reached its maximum speed when pulling the welding strip to be flattened to the welding strip flattening device, it is difficult for the linear speed of the flattening drive wheel and the flattening driven wheel to be consistent with the pulling speed of the welding strip traction device in a short time, thus posing a risk of welding strip breakage.

[0055] In view of this, this application provides a strip flattening device. For example... Figures 1 to 5 As shown, the welding strip flattening device of this application includes a mounting base 1, a first translation drive unit 2, a mounting bracket 3, a pressure roller assembly 4, and a pressure roller drive unit 5, wherein:

[0056] The mounting bracket 3 is slidably mounted on the mounting base 1 along a first direction (such as the X direction) and is connected to the first translation drive unit 2 provided on the mounting base 1.

[0057] The pressure roller assembly 4 includes a first pressure roller 41 and a second pressure roller 42 rotatably mounted on the mounting bracket 3. Both the first pressure roller 41 and the second pressure roller 42 extend along a second direction (such as the Y direction) and are arranged vertically. The first pressure roller 41 is provided with at least one protrusion 43 in the circumferential direction. A gap is formed between the first pressure roller 41 and the second pressure roller 42 for the welding strip 100 to pass through. The welding strip 100 extends along a first direction, and the second direction is perpendicular to the first direction.

[0058] The pressure roller drive unit 5 is mounted on the mounting bracket 3 and is connected to the first pressure roller 41 for transmission.

[0059] The first translation drive unit 2 is used to drive the mounting bracket 3 to reciprocate along the first direction, so as to drive the pressure roller assembly 4 to reciprocate between the first position and the third position, wherein there is also a second position between the first position and the third position.

[0060] When the pressure roller assembly 4 is in the first position, the protrusion 43 is offset from the gap.

[0061] During the movement of the pressure roller assembly 4 from the first position to the third position, the pressure roller drive unit 5 is configured to drive the first pressure roller 41 to rotate, so that when the roller assembly moves to the second position, the protrusion 43 is driven to the gap along with the rotation of the first pressure roller 41, and when the pressure roller assembly 4 continues to move to the third position, the protrusion 43 is displaced from the gap again, so that the protrusion 43 cooperates with the second pressure roller 42 to flatten the welding strip at the gap.

[0062] The second pressure roller 42 is a roller with a circular cross-section.

[0063] The working process of the welding strip flattening device in this application is as follows:

[0064] In the initial state, the welding strip 100 to be flattened is pulled into position and remains stationary. The pressure roller assembly 4 is located in the first position, with the protrusion 43 on the first pressure roller 41 offset from the gap, that is, the non-protrusion on the first pressure roller 41 is at the gap. At this time, the gap between the first pressure roller 41 and the second pressure roller 42 is greater than the thickness of the welding strip 100.

[0065] When the welding strip 100 needs to be flattened, the first translation drive unit 2 drives the pressure roller assembly 4 to move from the first position to the third position. At the same time, the pressure roller drive unit 5 drives the first pressure roller 41 to rotate. During this process: when the pressure roller assembly 4 moves to the second position, the protrusion 43 on the first pressure roller 41 is driven to the gap as the first pressure roller 41 rotates. At this time, the gap between the protrusion 43 and the second pressure roller 42 is less than the thickness of the welding strip 100, thus starting the flattening of the welding strip 100 at the gap. Optionally, the gap between the protrusion 43 and the second pressure roller 42 is equal to the thickness of the flat section to be flattened. When the pressure roller assembly 4 continues to move to the third position, the protrusion 43 on the first pressure roller 41 is driven again to be offset from the gap as the first pressure roller 41 rotates, thus completing the flattening of the welding strip 100 at the gap.

[0066] In other words, during the process of the pressure roller assembly 4 moving from the first position to the second position, on the one hand, the pressure roller assembly 4 moves to the position where the welding strip 100 needs to be flattened, and on the other hand, the protrusion 43 on the first pressure roller 41 is driven to the gap. During the process of the pressure roller assembly 4 moving from the second position to the third position, the protrusion 43 and the second pressure roller 42 will flatten the welding strip 100 until the protrusion 43 leaves the gap.

[0067] After the welding strip 100 is flattened, the first translation drive unit 2 drives the pressure roller assembly 4 to move from the third position back to the first position. During this process, optionally, the pressure roller drive unit 5 does not drive the first pressure roller 41 to rotate, which can avoid accidentally flattening the welding strip. Of course, whether the first pressure roller 41 rotates during the return to the first position can also be selected and set according to the actual situation.

[0068] As can be seen, the welding strip flattening device provided in this application does not flatten the welding strip 100 during the pulling process. Instead, it first pulls the welding strip 100 into position and keeps it stationary, while the pressure roller assembly 4 translates and rotates relative to the welding strip 100 to perform the flattening operation. Therefore, in the welding strip flattening device of this application, the linear speed of the first pressure roller 41 does not need to match the traction speed of the traction mechanism, but only needs to match the driving speed of the first translation drive unit 2. The driving speed of the first translation drive unit 2 can be unaffected by the speed of the traction mechanism and can be set to a lower speed. Thus, the linear speed of the first pressure roller 41 can reach the moving speed of the first translation drive unit 2 in a short time, ensuring that the linear speed of the first pressure roller 41 matches the speed of the first translation drive unit 2 when the protrusion 43 rotates to the gap, thus preventing the welding strip from being pulled apart during the flattening process.

[0069] Furthermore, in this application, the first pressure roller 41 and the second pressure roller 42 can move synchronously under the drive of the first translation drive unit 2, which can prevent the flattened section from arching.

[0070] The first translation drive unit 2 can be a linear drive mechanism with various existing structures that can drive the mounting bracket 3 to slide in the first direction. For example, the first translation drive unit 2 is a linear drive mechanism composed of a motor, a lead screw and a lead screw nut, or a linear drive mechanism composed of a motor, a synchronous pulley and a synchronous belt.

[0071] The pressure roller drive unit 5 can adopt any existing rotary drive mechanism capable of driving the first pressure roller 41 to rotate. For example, the pressure roller drive unit 5 includes a motor, a drive pulley, a driven pulley, and a synchronous belt. The drive pulley is connected to the drive shaft of the motor, the driven pulley is connected to the end of the first pressure roller 41, and the synchronous belt is fitted onto the drive pulley and the driven pulley. The motor drives the driven pulley to rotate via the drive pulley and the synchronous belt, and the rotation of the driven pulley drives the first pressure roller 41 to rotate synchronously. Alternatively, the pressure roller drive unit 5 includes a motor and a reducer. The motor drives the first pressure roller 41 to rotate via the reducer.

[0072] The welding strip flattening device provided in this application can be used not only to flatten welding strips with a circular cross-section, but also to flatten welding strips with other cross-sections, such as triangular welding strips.

[0073] like Figures 3 to 4 As shown, optionally, a drive gear 44 is fixedly installed at one end of the first pressure roller 41, and a driven gear 45 that meshes with the drive gear 44 is fixedly installed at one end of the second pressure roller 42. When the first pressure roller 41 rotates, the second pressure roller 42 is driven to rotate in the opposite direction via the drive gear 44 and the driven gear 45.

[0074] Since a driven gear 45 that meshes with the driving gear 44 is fixedly installed at one end of the second pressure roller 42, when the pressure roller drive unit 5 drives the first pressure roller 41 to rotate, the second pressure roller 42 can rotate in the opposite direction and at the same speed as the first pressure roller 41. In this way, it can be ensured that the welding strip 100 is stably and evenly pressed from the top and bottom by the first pressure roller 41 and the second pressure roller 42, avoiding slippage, twisting or excessive stretching of the welding strip 100 caused by the speed difference between the first pressure roller 41 and the second pressure roller 42.

[0075] like Figure 1 As shown, optionally, the strip flattening device in this embodiment further includes a cutting mechanism 6 and a traction mechanism (not shown) disposed along a first direction after the pressure roller assembly 4, wherein: the traction mechanism includes a traction clamp, and the cutting mechanism 6 includes a cutting blade. The traction clamp is configured to clamp the free end of the strip 100 from the cutting mechanism 6 and to pull the strip away from the cutting mechanism 6 along the first direction, so that a strip of predetermined length passes through the slit of the cutting blade, and the middle portion of the strip 100 passing through the slit of the cutting blade has a flattened segment flattened by the pressure roller assembly 4. The cutting blade is configured to cut the strip 100 to obtain a strip segment with a flattened segment.

[0076] After the pressure roller assembly 4 completes the flattening operation of the welding strip 100 under the drive of the pressure roller drive unit 5, the traction mechanism first pulls the welding strip of a predetermined length out of the cutting mechanism 6, and the cutting mechanism 6 then cuts the welding strip 100 to obtain a set of welding strip segments with a flat section in the middle.

[0077] Optionally, the cutting blade includes an upper cutting blade and a lower cutting blade arranged vertically. When the traction mechanism pulls the welding strip 100, the upper and lower cutting blades separate vertically to avoid the welding strip 100. After the welding strip 100 of a predetermined length is pulled out of the cutting mechanism 6, the upper and lower cutting blades cut together vertically to cut all the welding strips 100 simultaneously. Of course, the cutting blade can also have other structures. For example, the cutting blade includes several cutting units spaced apart along a second direction, each cutting unit being used to cut one welding strip. Each cutting unit includes a first blade and a second blade. When the traction mechanism pulls the welding strip 100, the first and second blades of each cutting unit separate to avoid the corresponding welding strip. After the welding strip 100 of a predetermined length is pulled out of the cutting mechanism 6, the first and second blades of each cutting unit cut together to cut the welding strip 100. The first and second blades can be arranged vertically, moving closer or further apart in the height direction to cut or avoid the welding strip; they can also be configured as scissors to cut the welding strip from the left and right sides of the corresponding welding strip. Of course, the cutting blade in this application is not limited to the above form, as long as it can cut the solder strip through cutting.

[0078] Optionally, the traction chuck includes a clamping drive and upper and lower clamping plates arranged vertically. The clamping drive is used to drive the upper and lower clamping plates to open or close, thereby synchronously clamping or releasing the free ends of all welding strips 100. Alternatively, the traction chuck includes a clamping drive and a plurality of clamping members spaced apart along a second direction, each corresponding to a welding strip. Each clamping member includes a left clamp and a right clamp. The clamping drive is used to drive the left and right clamps of each clamping member to clamp the welding strip from the left and right sides of the corresponding welding strip. Of course, the traction chuck in this application is not limited to the above forms, as long as it can achieve the clamping of the welding strip.

[0079] like Figure 1 As shown, optionally, the welding strip flattening device in this embodiment further includes a clamping mechanism 7 disposed between the pressure roller assembly 4 and the cutting mechanism 6. The clamping mechanism 7 is configured to clamp the welding strip 100 when the pressure roller assembly 4 flattens the welding strip 100, and is configured to release the welding strip 100 when the traction mechanism pulls the welding strip 100.

[0080] When the pressure roller assembly 4 flattens the welding strip 100, the clamping mechanism 7 clamps the welding strip 100 near the flattening position, thereby ensuring the positional stability of each welding strip 100 during the flattening process and ultimately guaranteeing the consistency of flattening of each welding strip 100. Furthermore, after the clamping mechanism 7 releases the welding strip 100, the flattened section on the welding strip 100 will not exhibit significant side-flipping, thus ensuring the subsequent welding quality.

[0081] Optionally, the welding strip flattening device in this embodiment further includes a second translation drive unit 8 disposed on the mounting base 1. The clamping mechanism 7 is slidably mounted on the mounting base 1 along a first direction and is connected to the second translation drive unit 8 in a transmission manner. Before the cutting mechanism 6 cuts the welding strip, the second translation drive unit 8 is configured to drive the clamping mechanism 7 that clamps the welding strip to move away from the cutting mechanism 6 along the first direction, so as to cooperate with the traction mechanism to stretch the welding strip.

[0082] By setting the second translation drive unit 8, before the cutting mechanism 6 cuts the welding strip 100, the second translation drive unit 8 can drive the clamping mechanism 7 to slide away from the cutting mechanism 6 along the first direction, so that the clamping mechanism 7 and the traction mechanism cooperate to stretch the welding strip 100, thereby causing the welding strip 100 to produce a certain plastic tensile deformation, and preventing the free end of the cut welding strip 100 from drooping.

[0083] The second translation drive unit 8 can be a linear drive mechanism with various existing structures that can drive the clamping mechanism 7 to slide in the first direction. For example, the second translation drive unit 8 is a linear drive mechanism consisting of a motor, a lead screw and a lead screw nut, or a linear drive mechanism consisting of a motor, a synchronous pulley and a synchronous belt.

[0084] like Figure 8As shown, optionally, the clamping mechanism 7 includes a first clamping plate 71, a second clamping plate 72, and a driving member, wherein: both the first clamping plate 71 and the second clamping plate 72 extend along a second direction. The first clamping plate 71 is provided with a plurality of first grippers 73 arranged at intervals along the second direction, and the second clamping plate 72 is provided with a plurality of second grippers 74 corresponding one-to-one with the first grippers 73. Each first gripper 73 and its corresponding second gripper 74 constitute a gripper assembly, and each gripper assembly corresponds one-to-one with the welding strip. The driving member is used to drive the first clamping plate 71 and the second clamping plate 72 to move relative to each other in the second direction, thereby causing each gripper assembly to clamp or release the welding strip.

[0085] By configuring the clamping mechanism 7 in this way, only one drive unit is needed to drive all the gripper assemblies to simultaneously clamp and release all the welding strips, thereby reducing drive costs. Furthermore, since each welding strip has its own gripper assembly for clamping, it ensures that all welding strips can be effectively clamped, preventing some welding strips from being partially clamped.

[0086] Besides the structure described above, the clamping mechanism 7 can also take other forms. For example, the clamping mechanism 7 includes an upper pressure plate and a lower pressure plate disposed on the upper and lower sides of the welding strip. By controlling the upper pressure plate and the lower pressure plate to move closer or further apart, the synchronous clamping or release of all welding strips can be achieved. Alternatively, the clamping mechanism 7 includes multiple chuck assemblies corresponding one-to-one with the welding strips, and each chuck assembly can be individually controlled to clamp or release its corresponding welding strip. The structure of the clamping mechanism 7 is not limited to these, as long as it can achieve the clamping and release of each welding strip.

[0087] like Figures 1 to 3 As shown, optionally, the strip flattening device in this embodiment of the application further includes a guide mechanism 9 disposed on the mounting bracket 3. The guide mechanism 9 is located in front of the pressure roller assembly 4. The guide mechanism 9 is provided with a plurality of guide grooves, each guide groove being used to guide a strip.

[0088] By setting a guide mechanism 9 with a guide groove, the welding strip 100 is guided and traction is achieved, and the position of the welding strip 100 is avoided during the traction process.

[0089] like Figure 4 As shown, optionally, the strip flattening device in this embodiment of the application further includes a first pressing member 10 and a second pressing member 110 disposed on the mounting bracket 3, wherein the first pressing member 10 and the second pressing member 110 are respectively located on the upper and lower sides of the pressure roller assembly 4.

[0090] like Figure 4In the illustrated embodiment, the first clamping member 10 includes at least two (e.g., four in the figure) clamping rollers spaced apart along the second direction, with the axial direction of the clamping rollers parallel to the second direction. Each clamping roller is rotatably mounted on the mounting bracket 3. Similarly, the second clamping member 110 includes at least two (e.g., four in the figure) clamping rollers spaced apart along the second direction, with the axial direction of the clamping rollers parallel to the second direction. Each clamping roller is rotatably mounted on the mounting bracket 3. In other embodiments, the first clamping member 10 and the second clamping member 110 may also include only one long clamping roller extending along the second direction, with both ends of the clamping roller rotatably mounted on the mounting bracket 3.

[0091] The pressure roller in the first pressure member 10 abuts against the first pressure roller 41. The pressure roller in the second pressure member 110 abuts against the second pressure roller 42.

[0092] During long-term use, the first pressure roller 41 and the second pressure roller 42 may arch and deform, thus affecting the flattening effect. By pressing the first pressure member 10 and the second pressure member 110 with their pressing wheels, radial constraint is achieved on the first pressure roller 41 and the second pressure roller 42, thereby preventing deformation of the first pressure roller 41 and the second pressure roller 42. Furthermore, the pressing wheels can rotate with the rotation of the first pressure roller 41 and the second pressure roller 42, without affecting the flattening process.

[0093] like Figure 5 and Figure 6 As shown, optionally, the protrusion 43 is a strip-shaped protrusion 431 extending along the second direction. The strip-shaped protrusion 431 is used to cooperate with the second pressure roller 42 to flatten all the welding strips at the gap. The surface on the strip-shaped protrusion 431 used to cooperate with the second pressure roller 42 to flatten the welding strips is an arc-shaped surface.

[0094] In other embodiments, such as Figure 7 As shown, the protrusion 43 may also be composed of a number (e.g., 2, 3 or more) of protrusions 432 spaced apart along the second direction. Each protrusion 432 is used to cooperate with the second pressure roller 42 to flatten at least one welding strip at the gap. The surface of each protrusion 432 used to cooperate with the second pressure roller 42 to flatten the welding strip is an arc-shaped surface.

[0095] The arc-shaped surface on the protrusion 43 can better cooperate with the second pressure roller 42 to flatten the welding strip, ensuring the flattening quality of the flat section of the welding strip.

[0096] like Figure 5 As shown, optionally, the protrusions 43 can be configured as at least two, and each protrusion 43 is evenly spaced and arranged on the circumferential surface of the first pressure roller 41.

[0097] Based on the size of the first pressure roller 41 and the second pressure roller 42, and the distance between two adjacent positions of the welding strip that need to be flattened, multiple protrusions 43 are provided on the first pressure roller 41, which can shorten the travel of the mounting bracket 3 and improve work efficiency.

[0098] This application provides a sufficiently detailed and specific description. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of this application should fall within its protection scope. The scope of protection claimed in this application is defined by the claims, not by the above descriptions in the embodiments. Without contradiction, some optional components in one embodiment can also be used in another embodiment, and some preferred structures of the same component in one embodiment are also applicable to another embodiment. Furthermore, there may be slight differences in the wording of the names of certain components in different embodiments; these slight differences will not affect the understanding of the technical solution of the present invention by those skilled in the art.

Claims

1. A strip flattening device, characterized in that, The strip flattening device includes a mounting base, a first translation drive unit, a mounting bracket, a pressure roller assembly, and a pressure roller drive unit, wherein: The mounting bracket is slidably mounted on the mounting base along a first direction and is connected in a transmission manner to the first translation drive unit disposed on the mounting base; The pressure roller assembly includes a first pressure roller and a second pressure roller rotatably mounted on the mounting bracket. The first pressure roller and the second pressure roller both extend along a second direction and are arranged vertically. The first pressure roller has at least one protrusion in its circumferential direction. A gap is formed between the first pressure roller and the second pressure roller for the welding strip to pass through. The welding strip extends along the first direction, and the second direction is perpendicular to the first direction. The pressure roller drive unit is mounted on the mounting bracket and is connected to the first pressure roller drive unit. The first translation drive unit is used to drive the mounting bracket to reciprocate along the first direction, so as to drive the pressure roller assembly to reciprocate between the first position and the third position, wherein a second position is also provided between the first position and the third position; When the pressure roller assembly is in the first position, the protrusion is offset from the gap. During the movement of the pressure roller assembly from the first position toward the third position, the pressure roller drive unit is configured to drive the first pressure roller to rotate, such that when the pressure roller assembly moves to the second position, the protrusion is driven to the gap along with the rotation of the first pressure roller, and when the pressure roller assembly moves to the third position, the protrusion is again displaced from the gap, so that the protrusion cooperates with the second pressure roller to flatten the welding strip at the gap.

2. The strip flattening device as described in claim 1, characterized in that, A drive gear is fixedly installed at one end of the first pressure roller, and a driven gear that meshes with the drive gear is fixedly installed at one end of the second pressure roller. When the first pressure roller rotates, the second pressure roller is driven to rotate in the opposite direction via the drive gear and the driven gear.

3. The strip flattening device as described in claim 1, characterized in that, The strip flattening device further includes a cutting mechanism and a traction mechanism disposed along the first direction at the rear of the pressure roller assembly, wherein: The traction mechanism includes a traction clamp, and the cutting mechanism includes a cutting blade; The traction chuck is configured to grip the free end of the welding strip from the cutting mechanism and to pull the welding strip away from the cutting mechanism in the first direction, such that a predetermined length of welding strip passes through the slit of the pair of cutters, wherein the middle portion of the welding strip passing through the slit of the pair of cutters has a flat section that is flattened by the pressure roller assembly. The cutting blade is configured to cut the solder strip to obtain a solder strip segment with a flat section.

4. The welding strip flattening device as described in claim 3, characterized in that, The strip flattening device further includes a clamping mechanism disposed between the pressure roller assembly and the cutting mechanism; The clamping mechanism is configured to clamp the welding strip when the pressure roller assembly flattens the welding strip, and to release the welding strip when the traction mechanism pulls the welding strip.

5. The strip flattening device as described in claim 4, characterized in that, The welding strip flattening device further includes a second translation drive unit disposed on the mounting base, and the clamping mechanism is slidably mounted on the mounting base along the first direction and is connected to the second translation drive unit in a transmission manner; Before the cutting mechanism cuts the welding strip, the second translation drive is configured to drive the clamping mechanism that clamps the welding strip to move away from the cutting mechanism along the first direction, so as to cooperate with the traction mechanism to stretch the welding strip.

6. The strip flattening device as described in claim 4, characterized in that, The clamping mechanism includes a first clamping plate, a second clamping plate, and a driving component, wherein: Both the first clamping plate and the second clamping plate extend along the second direction; The first clamping plate is provided with a plurality of first clamping claws arranged at intervals along the second direction, and the second clamping plate is provided with a plurality of second clamping claws corresponding one-to-one with the first clamping claws. Each first clamping claw and the corresponding second clamping claw constitute a clamping claw assembly, and the clamping claw assembly corresponds one-to-one with the welding strip. The driving component is used to drive the first clamping plate and the second clamping plate to move relative to each other in the second direction, so as to cause each of the gripper assemblies to clamp or release the welding strip.

7. The strip flattening device as described in claim 1, characterized in that, The strip flattening device also includes a guide mechanism disposed on the mounting bracket. The guide mechanism is located in front of the pressure roller assembly. The guide mechanism is provided with a plurality of guide grooves, each of which is used to guide a strip.

8. The strip flattening device as described in claim 1, characterized in that, The strip flattening device further includes a first clamping member and a second clamping member disposed on the mounting bracket, wherein: The first clamping member and the second clamping member are respectively located on the upper and lower sides of the pressure roller assembly; The first clamping member includes at least two clamping wheels spaced apart along the second direction, the axial direction of the clamping wheels being parallel to the second direction, and each clamping wheel being rotatably mounted on the mounting bracket; or, the first clamping member includes a clamping wheel extending along the second direction, with both ends of the clamping wheel being rotatably mounted on the mounting bracket. The second clamping member includes at least two clamping wheels spaced apart along the second direction, the axial direction of the clamping wheels being parallel to the second direction, and each clamping wheel being rotatably mounted on the mounting bracket; or, the second clamping member includes a clamping wheel extending along the second direction, with both ends of the clamping wheel being rotatably mounted on the mounting bracket. The clamping wheel in the first clamping member abuts against the first pressure roller; The clamping wheel in the second clamping member abuts against the second pressure roller.

9. The strip flattening device according to any one of claims 1 to 8, characterized in that, The protrusion is a strip-shaped protrusion extending along the second direction. The strip-shaped protrusion is used to cooperate with the second pressure roller to flatten all the welding strips in the gap. The surface of the strip-shaped protrusion used to cooperate with the second pressure roller to flatten the welding strips is an arc-shaped surface. Alternatively, the protrusion includes a plurality of protrusions spaced apart along the second direction. Each protrusion is used to cooperate with the second pressure roller to flatten at least one welding strip in the gap. The surface of each protrusion used to cooperate with the second pressure roller to flatten the welding strips is an arc-shaped surface.

10. The strip flattening device according to any one of claims 1 to 8, characterized in that, The protrusions are configured as at least two, and each of the protrusions is evenly spaced on the circumferential surface of the first pressure roller.

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