Solder strip pressing mechanism and solder strip processing device

Abstract

The utility model relates to the technical field of photovoltaic module production, in particular to a welding strip pressing mechanism and a welding strip processing device. The welding strip pressing mechanism comprises an installation support, a pressing head assembly, a base plate and a lifting driving mechanism. The pressure head assembly comprises a first pressure head set and a second pressure head set, the first pressure head set is located on the front side of the second pressure head set in the traction direction of the welding strip, the first pressure head set comprises a plurality of first pressure heads arranged side by side in the first direction, and the second pressure head set comprises a plurality of second pressure heads arranged side by side in the first direction. The lifting driving mechanism drives the pressing head assembly to move towards the base plate, the first pressing head presses the flat welding strip section on the base plate and corrects the flat welding strip section which can be turned over, the second pressing head presses the non-flat welding strip section on the base plate, and due to the fact that the pressing force of the first pressing head on the flat welding strip section is smaller than the pressing force of the second pressing head on the non-flat welding strip section, the non-flat welding strip section can be turned over. And the flat welding strip section is subjected to extremely small tensile force, so that the welding strip can be effectively prevented from being snapped at the flat welding strip section.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic module production, in particular to a welding strip pressing mechanism and a welding strip processing device. BACKGROUND

[0002] A photovoltaic cell string is formed by connecting multiple cell pieces in series through welding strips. For two adjacent cell pieces in the cell string, the first half of the welding strip is connected to the first surface of one of the cell pieces, and the second half of the welding strip is connected to the second surface of the other cell piece. During the lamination of the module, the welding strip is likely to cause local stress to the edges of the two cell pieces. In order to reduce the risk of hidden cracks in the cell pieces due to local stress, it is usually necessary to press the welding strip segment between the two adjacent cell pieces into a flat welding strip during the welding strip preparation stage. That is, after the welding strip is pulled out to a certain length, the welding strip is pressed and straightened by the cooperation of the welding strip pressing mechanism and the welding strip stretching clamping mechanism, and then a plurality of flat welding strip segments are pressed on the welding strip between the welding strip pressing mechanism and the welding strip stretching clamping mechanism by the welding strip flattening mechanism. Finally, the flattened welding strip is cut off after being pulled out of the welding strip pressing mechanism, and is used to connect the cell pieces in series.

[0003] During the process of pulling the welding strip out of the welding strip pressing mechanism, the flat welding strip part is prone to turn over. In the prior art, before the welding strip is cut off, the welding strip pressing mechanism presses the last flat welding strip segment on the pulled-out welding strip to correct the turned-over welding strip. Before the next welding strip flattening operation is performed, the welding strip pressing mechanism maintains the pressing of the flat welding strip segment, and the welding strip stretching clamping mechanism presses the welding strip again and stretches the welding strip in cooperation with the welding strip pressing mechanism. However, for a welding strip with a small diameter, the flat welding strip part is very fragile after being flattened, and the flat welding strip part pressed by the welding strip pressing mechanism is prone to be pulled off during the welding strip stretching process. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a welding strip pressing mechanism and a welding strip processing device to solve the technical problem that the welding strip is prone to be pulled off at the flat welding strip part when the welding strip pressing mechanism and the welding strip stretching clamping mechanism cooperate to stretch the welding strip.

[0005] In a first aspect, the present application provides a welding strip pressing mechanism, which comprises a mounting bracket, a pressure head assembly, a backing plate and a lifting driving mechanism.

[0006] The pressure head assembly and the backing plate are both arranged on the mounting bracket, and the pressure head assembly and the backing plate are arranged in an up-down manner, and a space for the welding strip to pass through is formed between the pressure head assembly and the backing plate.

[0007] The pressure head assembly comprises a first pressure head group and a second pressure head group, the first pressure head group is located in front of the second pressure head group along the pulling direction of the welding strip, the first pressure head group comprises a plurality of first pressure heads arranged side by side along a first direction, the second pressure head group comprises a plurality of second pressure heads arranged side by side along the first direction, and the first pressure head and the second pressure head are arranged one by one corresponding to the welding strip, and the first direction is perpendicular to the pulling direction of the welding strip;

[0008] Each welding strip comprises at least one group of adjacent flat welding strip segments and non-flat welding strip segments along the pulling direction, the flat welding strip segment in the same group is located in front of the non-flat welding strip segment, the driving end of the lifting driving mechanism is in transmission connection with the pressure head assembly, the lifting driving mechanism is used for driving the pressure head assembly to lift, and when the pressure head assembly is driven by the lifting driving mechanism to move towards the pad, the first pressure head and the second pressure head can press the flat welding strip segment and the non-flat welding strip segment in the same group on the pad respectively;

[0009] The pressing force of the first pressure head on the flat welding strip segment is less than the pressing force of the second pressure head on the non-flat welding strip segment.

[0010] The welding strip passes between the pressure head assembly and the pad, when a group of adjacent flat welding strip segments and non-flat welding strip segments are located between the first pressure head and the pad and between the second pressure head and the pad respectively, the pressure head assembly is driven by the lifting driving mechanism to move towards the pad, the flat welding strip segment can be pressed on the pad by the first pressure head to correct the possible turned flat welding strip segment, the non-flat welding strip segment can be pressed on the pad by the second pressure head, and since the pressing force of the first pressure head on the flat welding strip segment is less than the pressing force of the second pressure head on the non-flat welding strip segment, the welding strip pressing mechanism mainly relies on the second pressure head to press the non-flat welding strip segment, and when the welding strip is stretched and clamped in cooperation with the welding strip stretching and clamping mechanism, the flat welding strip segment is subjected to very small stretching force, so that the welding strip can be effectively prevented from being broken at the flat welding strip segment.

[0011] In an optional embodiment, the pressure head assembly further comprises a pressure head mounting plate, a first spring and a second spring, and the ends of the first pressure head and the second pressure head away from the pad are slidably mounted on the pressure head mounting plate;

[0012] The first spring is sleeved on the first pressure head and is pressed between the pressure head mounting plate and the pressing end of the first pressure head, and the second spring is sleeved on the second pressure head and is pressed between the pressure head mounting plate and the pressing end of the second pressure head;

[0013] The pressure head mounting plate is in transmission connection with the driving end of the lifting driving mechanism.

[0014] Since the first pressing head and the second pressing head are both mounted on the pressing head mounting plate, the pressing head mounting plate is driven to move by one lifting driving mechanism, so that all the first pressing heads and all the second pressing heads are synchronously moved, the structure is simple, the cost is low, and the motion stability is high. When the driving end of the lifting driving mechanism drives the pressing head mounting plate to move towards the pad, since the first pressing head and the second pressing head can slide up and down relative to the pressing head mounting plate, the first pressing head is sleeved with the first spring, and the first spring is press-fitted between the pressing head mounting plate and the pressing end of the first pressing head; the second pressing head is sleeved with the second spring, and the second spring is press-fitted between the pressing head mounting plate and the pressing end of the second pressing head; when the first pressing head and the second pressing head press the flat welding strip segment and the non-flat welding strip segment in the same group on the pad respectively, the first spring can provide a buffer force for the first pressing head, and the second spring can provide a buffer force for the second pressing head, so as to avoid damage of the first pressing head and the second pressing head and deformation of the welding strip.

[0015] In an optional embodiment, the elastic coefficient of the first spring is smaller than the elastic coefficient of the second spring.

[0016] When the first pressing head and the second pressing head press the flat welding strip segment and the non-flat welding strip segment in the same group on the pad respectively, the elastic force of the first spring is smaller than that of the second spring, so that the pressing force of the first pressing head on the flat welding strip segment is smaller than the pressing force of the second pressing head on the non-flat welding strip segment.

[0017] In an optional embodiment, in the non-pressing state, the distance between the pressing end of the first pressing head and the pad is smaller than the distance between the pressing end of the second pressing head and the pad.

[0018] When the pressing head assembly moves towards the pad, the first pressing head can first press the flat welding strip segment on the pad to correct the welding strip, and then the second pressing head can press the non-flat welding strip segment on the pad, so as to ensure that the welding strip can be stably corrected.

[0019] In an optional embodiment, the mounting bracket comprises a top plate, a bottom plate and a pair of side plates;

[0020] The two ends of the top plate are detachably connected to the top of the pair of side plates by means of a latch, and the two ends of the bottom plate are fixedly connected to the bottom of the pair of side plates;

[0021] The pressing head assembly and the pad are both arranged between the top plate and the bottom plate;

[0022] The pad is connected to the bottom plate, and the lifting driving mechanism is arranged on the top plate, and the driving end of the lifting driving mechanism is in transmission connection with the pressing head mounting plate through the top plate; or the pad is connected to the top plate, and the lifting driving mechanism is arranged on the bottom plate, and the driving end of the lifting driving mechanism is in transmission connection with the pressing head mounting plate through the bottom plate.

[0023] The mounting support is in a frame shape as a whole, stable in structure and not easy to deform, and meanwhile, the base plate can be arranged on the bottom plate, and the lifting driving mechanism can be arranged on the top plate, or the base plate can be arranged on the top plate, and the lifting driving mechanism can be arranged on the bottom plate, so that the applicability is improved; the top plate is detachably connected to the top of the pair of side plates through the pins at two ends, and when the pin at one side is pulled out, one end of the top plate can be lifted up, so that the inside of the mechanism is convenient to maintain and the welding strip is convenient to pass through.

[0024] In an optional embodiment, the pressure head mounting plate is located above the base plate;

[0025] The mounting support further comprises a limiting pad block, which is arranged between the pressure head mounting plate and the bottom plate and connected to the bottom plate, and is used for limiting the descending stroke of the pressure head mounting plate; and / or;

[0026] The mounting support further comprises a lifting guide column, which is arranged at two sides of the pressure head mounting plate, and the upper end of each lifting guide column is slidably connected to the top plate, and the lower end of each lifting guide column is connected to the pressure head mounting plate.

[0027] By arranging the limiting pad block, when the pressure head mounting plate moves towards the base plate, the pressure head mounting plate can abut against the limiting pad block, so as to limit the pressure head mounting plate from continuously moving towards the base plate, and avoid damage of the first pressure head and the second pressure head and deformation of the welding strip. By arranging the lifting guide column, when the pressure head mounting plate moves towards or away from the base plate, the pressure head mounting plate can be lifted along the lifting guide column, so as to ensure the stability of lifting and avoid tilting of the pressure head mounting plate.

[0028] In an optional embodiment, the pressure head mounting plate is located below the base plate;

[0029] The mounting support further comprises a limiting pad block, which is arranged between the pressure head mounting plate and the top plate and connected to the top plate, and is used for limiting the ascending stroke of the pressure head mounting plate; and / or;

[0030] The mounting support further comprises a lifting guide column, which is arranged at two sides of the pressure head mounting plate, and the lower end of each lifting guide column is slidably connected to the bottom plate, and the upper end of each lifting guide column is connected to the pressure head mounting plate.

[0031] By arranging the limiting pad block, when the pressure head mounting plate moves towards the base plate, the pressure head mounting plate can abut against the limiting pad block, so as to limit the pressure head mounting plate from continuously moving towards the base plate, and avoid damage of the first pressure head and the second pressure head and deformation of the welding strip. By arranging the lifting guide column, when the pressure head mounting plate moves towards or away from the base plate, the pressure head mounting plate can be lifted along the lifting guide column, so as to ensure the stability of lifting and avoid tilting of the pressure head mounting plate.

[0032] In an optional embodiment, a plurality of limiting guide columns are arranged side by side on the base plate in a first direction, and a gap for passing through a single welding strip is arranged between adjacent limiting guide columns.

[0033] When a single welding strip passes between two adjacent guide posts, the two guide posts can limit the welding strip passing between them, preventing the welding strip from shifting left or right along the pulling direction.

[0034] In an optional embodiment, along the pulling direction of the weld strip, the length of the pressing end of the first pressure head is less than or equal to the length of the flat weld strip segment; and / or;

[0035] Along the pulling direction of the welding strip, the length of the clamping end of the first pressure head is less than the length of the clamping end of the second pressure head.

[0036] By setting the length of the pressing end of the first pressure head to be less than or equal to the length of the flat welding strip, it is ensured that the flat welding strip can be stably pressed while avoiding pressing the non-flat welding strip. By setting the length of the pressing end of the first pressure head to be less than the length of the pressing end of the second pressure head, it is ensured that the size of the welding strip pressed by the second pressure head is greater than the size pressed by the first pressure head, thus avoiding deformation of the welding strip due to the pressing force of the second pressure head being greater than that of the first pressure head.

[0037] Secondly, this application provides a welding strip processing device, which includes a welding strip stretching and clamping mechanism, a welding strip flattening mechanism, a welding strip cutting mechanism, a welding strip traction mechanism, and a welding strip pressing mechanism of any one of the aforementioned embodiments.

[0038] The welding strip traction mechanism is used to pull out the welding strip released from the coil. The welding strip passes through the welding strip stretching and clamping mechanism, the welding strip flattening mechanism, the welding strip pressing mechanism and the welding strip cutting mechanism in sequence.

[0039] The welding strip stretching and clamping mechanism and the welding strip pressing mechanism can work together to clamp and stretch the welding strip;

[0040] The strip flattening mechanism is used to flatten the strip located between the strip stretching and clamping mechanism and the strip pressing mechanism to produce N flat strip segments. Among them, the strip that is not flattened is a non-flat strip segment. The flat strip segments and non-flat strip segments are arranged alternately, and N≥1.

[0041] The strip traction mechanism is used to pull the strip flattened by the strip flattening mechanism forward.

[0042] The welding strip clamping mechanism is also used to press down the Nth flat welding strip segment and the Nth non-flat welding strip segment in the welding strip pulled by the welding strip traction mechanism;

[0043] The welding strip cutting mechanism is used to cut the welding strip.

[0044] The welding strip processing device provided in this application includes the aforementioned welding strip pressing mechanism. Therefore, the technical advantages and effects achieved by the device include those achieved by the aforementioned welding strip pressing mechanism, which will not be elaborated here.

[0045] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0047] Figure 1 A schematic diagram of the front side of the welding strip pressing mechanism provided in the embodiments of this application along the pulling direction of the welding strip;

[0048] Figure 2 A schematic diagram of the welding strip pressing mechanism provided in this application embodiment, along the pulling direction of the welding strip;

[0049] Figure 3 This is a schematic diagram of the welding strip pressing mechanism provided in the embodiments of this application;

[0050] Figure 4 Provided for the embodiments of this application Figure 3 Sectional view of AA in the middle;

[0051] Figure 5 A schematic diagram illustrating the interaction between the first pressure head and the flat welded strip segment, and the second pressure head and the non-flat welded strip segment, provided in an embodiment of this application;

[0052] Figure 6 This is a schematic diagram of the welding strip processing device provided in an embodiment of this application.

[0053] Icons: 1-Plate; 2-Lifting drive mechanism; 3-Welding strip; 4-First pressure head; 5-Second pressure head; 6-Flat welding strip segment; 7-Non-flat welding strip segment; 8-Pressure head mounting plate; 9-First spring; 10-Second spring; 11-Top plate; 12-Bottom plate; 13-Side plate; 14-Pin; 15-Limiting pad; 16-Lifting guide post; 17-Limiting guide post; 18-Welding strip pressing mechanism; 19-Welding strip stretching and clamping mechanism; 20-Welding strip flattening mechanism; 21-Welding strip cutting mechanism; 22-Push plate. Detailed Implementation

[0054] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0057] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0058] The present application will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0059] This embodiment provides a welding strip clamping mechanism 18, such as Figures 1 to 4As shown, the welding strip clamping mechanism 18 includes: a mounting bracket, a pressure head assembly, a pad 1, and a lifting drive mechanism 2; both the pressure head assembly and the pad 1 are mounted on the mounting bracket, and the pressure head assembly and the pad 1 are arranged vertically, forming a space between the pressure head assembly and the pad 1 for the welding strip 3 to pass through; the pressure head assembly includes a first pressure head group 4 and a second pressure head group 5. Along the pulling direction of the welding strip 3, the first pressure head group 4 is located in front of the second pressure head group 5. The first pressure head group 4 includes multiple first pressure heads 4 arranged side by side along a first direction, and the second pressure head group 5 includes multiple second pressure heads 5 arranged side by side along a first direction, and both the first pressure head 4 and the second pressure head 5 are aligned with the welding strip 3. In a one-to-one configuration, the first direction is perpendicular to the pulling direction of the welding strip 3; each welding strip 3 includes at least one group of adjacent flat welding strip segments 6 and non-flat welding strip segments 7 along the pulling direction, in which the flat welding strip segment 6 is located in front of the non-flat welding strip segment 7, the driving end of the lifting drive mechanism 2 is connected to the pressure head assembly, the lifting drive mechanism 2 is used to drive the pressure head assembly to lift and lower, and when the lifting drive mechanism 2 drives the pressure head assembly to move toward the pad 1, the first pressure head 4 and the second pressure head 5 can respectively press the flat welding strip segment 6 and the non-flat welding strip segment 7 in the same group onto the pad 1; the pressing force of the first pressure head 4 on the flat welding strip segment 6 is less than the pressing force of the second pressure head 5 on the non-flat welding strip segment 7.

[0060] In this embodiment, the welding strip 3 passes between the pressure head assembly and the pad 1. When a group of adjacent flat welding strip segments 6 and non-flat welding strip segments 7 are located between the first pressure head 4 and the pad 1 and the second pressure head 5 and the pad 1 respectively, the lifting drive mechanism 2 drives the pressure head assembly to move toward the pad 1. The first pressure head 4 can press the flat welding strip segment 6 onto the pad 1 to correct any possible overturning of the flat welding strip segment 6. The second pressure head 5 can press the non-flat welding strip segment 7 onto the pad 1. Since the clamping force of the first pressure head 4 on the flat welding strip segment 6 is less than the clamping force of the second pressure head 5 on the non-flat welding strip segment 7, the welding strip clamping mechanism 18 mainly relies on the second pressure head 5 to clamp the non-flat welding strip segment 7. When the welding strip is stretched in conjunction with the welding strip stretching clamping mechanism 19, the tensile force on the flat welding strip segment 6 is extremely small, which can effectively prevent the welding strip 3 from being pulled apart in the flat welding strip segment 6.

[0061] Optionally, in this embodiment, two lifting drive mechanisms 2 can be set. One lifting drive mechanism 2 is used to drive all the first pressing heads 4 to move, and the other lifting drive mechanism 2 is used to drive all the second pressing heads 5 to move. By controlling the amount of movement of the first pressing head 4 and the second pressing head 5 toward the pad plate 1 respectively, the pressing force of the first pressing head 4 on the flat welded strip 6 is less than the pressing force of the second pressing head 5 on the non-flat welded strip 7.

[0062] In the optional technical solutions of this embodiment, such as Figure 1 and Figure 4As shown, the pressure head assembly also includes a pressure head mounting plate 8, a first spring 9, and a second spring 10. The ends of the first pressure head 4 and the second pressure head 5 that are away from the pad 1 can be slidably mounted on the pressure head mounting plate 8. The first spring 9 is sleeved on the first pressure head 4 and pressed between the pressure head mounting plate 8 and the pressing end of the first pressure head 4. The second spring 10 is sleeved on the second pressure head 5 and pressed between the pressure head mounting plate 8 and the pressing end of the second pressure head 5. The pressure head mounting plate 8 is connected to the drive end of the lifting drive mechanism 2.

[0063] In this embodiment, since both the first pressure head 4 and the second pressure head 5 are mounted on the pressure head mounting plate 8, a lifting drive mechanism 2 can drive the pressure head mounting plate 8 to move, thereby driving all the first pressure heads 4 and all the second pressure heads 5 to move synchronously. The structure is simple, the cost is low, and the movement stability is high. When the lifting drive mechanism 2 drives the pressure head mounting plate 8 to move towards the pad 1, since both the first pressure head 4 and the second pressure head 5 can slide up and down relative to the pressure head mounting plate 8, the first pressure head 4 is fitted with a first spring 9, and the first spring 9 is pressed between the pressure head mounting plate 8 and the pressing end of the first pressure head 4. The second pressure head 5 is fitted with a second spring 10, and the second spring 10 is pressed between the pressure head mounting plate 8 and the pressing end of the second pressure head 5. When the first pressure head 4 and the second pressure head 5 press the flat welding strip segment 6 and the non-flat welding strip segment 7 of the same group onto the pad 1, the first spring 9 can provide a buffering force for the first pressure head 4, and the second spring 10 can provide a buffering force for the second pressure head 5, avoiding damage to themselves and deformation of the welding strip 3.

[0064] In this embodiment, the pressure head mounting plate 8 is opposite to the pad plate 1. The ends of the first pressure head 4 and the second pressure head 5 away from the pad plate 1 are both inserted through the pressure head mounting plate 8 and can slide up and down relative to the pressure head mounting plate 8. Each end of the first pressure head 4 and the second pressure head 5 away from the pad plate 1 is connected to a limiting component. The limiting component abuts against the side of the pressure head mounting plate 8 away from the pad plate 1, preventing the first pressure head 4 and the second pressure head 5 from disengaging from the pressure head mounting plate 8. The structure of slidingly mounting the ends of the first pressure head 4 and the second pressure head 5 away from the pad plate 1 on the pressure head mounting plate 8 is simple and provides stable sliding. The limiting component can be a nut or other structural components, as long as the requirements are met.

[0065] In the optional technical solution of this embodiment, the elastic coefficient of the first spring 9 is less than that of the second spring 10. When the first pressure head 4 and the second pressure head 5 press the flat welded strip segment 6 and the non-flat welded strip segment 7 of the same group onto the pad 1, the elastic force of the first spring 9 is less than that of the second spring 10, thereby realizing that the pressing force of the first pressure head 4 on the flat welded strip segment 6 is less than the pressing force of the second pressure head 5 on the non-flat welded strip segment 7.

[0066] In the optional technical solution of this embodiment, in the non-pressed state, the distance between the pressing end of the first pressing head 4 and the pad 1 is smaller than the distance between the pressing end of the second pressing head 5 and the pad 1. When the pressing head assembly moves toward the pad 1, the first pressing head 4 can first press the flat welding strip 6 onto the pad 1 to correct the welding strip 3, and then the second pressing head 5 presses the non-flat welding strip 7 onto the pad 1, thereby ensuring that the welding strip 3 can be stably corrected.

[0067] In the optional technical solutions of this embodiment, such as Figure 1 As shown, the mounting bracket includes a top plate 11, a bottom plate 12, and a pair of side plates 13; the two ends of the top plate 11 are detachably connected to the top of the pair of side plates 13 by means of pins 14, and the two ends of the bottom plate 12 are fixedly connected to the bottom of the pair of side plates 13 by means of bolts; the pressure head assembly and the pad 1 are both disposed between the top plate 11 and the bottom plate 12; the pad 1 is connected to the bottom plate 12, the lifting drive mechanism 2 is disposed on the top plate 11, and the drive end of the lifting drive mechanism 2 passes through the top plate 11 and is connected to the pressure head mounting plate 8; or, the pad 1 is connected to the top plate 11, the lifting drive mechanism 2 is disposed on the bottom plate 12, and the drive end of the lifting drive mechanism 2 passes through the bottom plate 12 and is connected to the pressure head mounting plate 8.

[0068] In this embodiment, the mounting bracket is frame-shaped, with a stable structure that is not easily deformed. It can be mounted on the base plate 12 with the lifting drive mechanism 2 mounted on the top plate 11, or the base plate 1 can be mounted on the top plate 11 with the lifting drive mechanism 2 mounted on the base plate 12, which improves its applicability. The two ends of the top plate 11 are detachably connected to the top of a pair of side plates 13 by pins 14. By removing the pins 14 on one side, one end of the top plate 11 can be lifted up, which facilitates maintenance of the internal mechanism and the installation of welding strips.

[0069] In the optional technical solutions of this embodiment, such as Figure 2 As shown, the welding strip pressing mechanism 18 also includes a push plate 22, and the driving end of the lifting drive mechanism 2 is connected to the pressure head mounting plate 8 through the push plate 22. The driving end of the lifting drive mechanism 2 drives the pressure head mounting plate 8 to move through the push plate 22, so that the pressure head mounting plate 8 is subjected to balanced force and moves stably.

[0070] In the optional technical solutions of this embodiment, such as Figures 1 to 3As shown, the pressure head mounting plate 8 is located above the pad 1; the mounting bracket also includes a limiting pad 15, which is disposed between the pressure head mounting plate 8 and the base plate 12 and connected to the base plate 12. The limiting pad 15 is used to limit the downward stroke of the pressure head mounting plate 8; and / or, the mounting bracket also includes lifting guide columns 16, which are disposed on both sides of the pressure head mounting plate 8. The upper end of each lifting guide column 16 is slidably connected to the top plate 11, and the lower end of each lifting guide column 16 is connected to the pressure head mounting plate 8. By setting the limiting pad 15, when the pressure head mounting plate 8 moves toward the pad 1, the pressure head mounting plate 8 can abut against the limiting pad 15, thereby limiting the pressure head mounting plate 8 from continuing to move toward the pad 1, avoiding damage to the first pressure head 4 and the second pressure head 5 and deformation of the welding strip 3. By setting up the lifting guide column 16, when the pressure head mounting plate 8 moves toward or away from the pad plate 1, the pressure head mounting plate 8 can move up and down along the lifting guide column 16, ensuring the stability of the lifting and preventing the pressure head mounting plate 8 from tilting.

[0071] In the optional technical solution of this embodiment, the pressure head mounting plate 8 is located below the pad plate 1; the mounting bracket also includes a limiting pad 15, which is disposed between the pressure head mounting plate 8 and the top plate 11 and connected to the top plate 11. The limiting pad 15 is used to limit the upward stroke of the pressure head mounting plate 8; and / or, the mounting bracket also includes lifting guide columns 16, which are disposed on both sides of the pressure head mounting plate 8. The lower end of each lifting guide column 16 is slidably connected to the base plate 12, and the upper end of each lifting guide column 16 is connected to the pressure head mounting plate 8. This embodiment also has the technical advantages and effects achieved by the above embodiments, which will not be repeated here.

[0072] In the optional technical solution of this embodiment, a plurality of limiting guide posts 17 are arranged side by side on the pad 1 along the first direction, and a gap is provided between adjacent limiting guide posts 17 for a single welding strip 3 to pass through. When a single welding strip 3 passes through between two adjacent limiting guide posts 17, the two adjacent limiting guide posts 17 can limit the welding strip 3 passing through them, preventing the welding strip 3 from shifting left or right along the pulling direction.

[0073] In the optional technical solution of this embodiment, along the pulling direction of the welding strip 3, the length of the pressing end of the first pressing head 4 is less than or equal to the length of the flat welding strip segment 6; and / or, along the pulling direction of the welding strip 3, the length of the pressing end of the first pressing head 4 is less than the length of the pressing end of the second pressing head 5.

[0074] In this embodiment, by setting the length of the pressing end of the first pressing head 4 to be less than or equal to the length of the flat welding strip 6, it is ensured that the flat welding strip 6 can be stably pressed while avoiding pressing the non-flat welding strip 7; by setting the length of the pressing end of the first pressing head 4 to be less than the length of the pressing end of the second pressing head 5, it is ensured that the size of the welding strip 3 pressed by the second pressing head 5 is greater than the size pressed by the first pressing head 4, thus avoiding deformation of the welding strip 3 due to the pressing force of the second pressing head 5 being greater than the pressing force of the first pressing head 4.

[0075] In the optional technical solutions of this embodiment, such as Figure 5 As shown, the second pressure head 5 is cylindrical, and its cross-sectional area is larger than that of the first pressure head 4. All the second pressure heads 5 are arranged in a staggered manner along the pulling direction of the welding strip 3. In this embodiment, the second pressure head 5 is a circular pressure head, and its size is large. Due to limited installation space, all the second pressure heads 5 are arranged in two rows along the pulling direction of the welding strip 3, with the second pressure heads 5 in the two rows staggered to each other, so that each second pressure head 5 can press one welding strip 3, improving space utilization.

[0076] In this embodiment, the lifting drive mechanism 2 can be a telescopic motor or a telescopic cylinder, or other drive that meets the requirements.

[0077] This embodiment provides a solder strip processing device, such as... Figure 6 As shown, the welding strip processing device includes a welding strip stretching and clamping mechanism 19, a welding strip flattening mechanism 20, a welding strip cutting mechanism 21, a welding strip traction mechanism, and a welding strip pressing mechanism 18 of any of the aforementioned embodiments; the welding strip traction mechanism is used to pull out the welding strip 3 released from the coil, and the welding strip 3 passes sequentially through the welding strip stretching and clamping mechanism 19, the welding strip flattening mechanism 20, the welding strip pressing mechanism 18, and the welding strip cutting mechanism 21; the welding strip stretching and clamping mechanism 19 and the welding strip pressing mechanism 18 can cooperate to clamp and stretch the welding strip 3; the welding strip flattening mechanism 20 is used to... The welding strip 3 located between the welding strip stretching and clamping mechanism 19 and the welding strip pressing mechanism 18 is flattened to prepare N flat welding strip segments 6, wherein the unflattened welding strip 3 is a non-flat welding strip segment 7, and the flat welding strip segments 6 and non-flat welding strip segments 7 are arranged alternately, N≥1; the welding strip traction mechanism is used to pull the welding strip 3 flattened by the welding strip flattening mechanism 20 forward; the welding strip pressing mechanism 18 is also used to press down the Nth flat welding strip segment 6 and the Nth non-flat welding strip segment 7 in the welding strip 3 pulled by the welding strip traction mechanism; the welding strip cutting mechanism 21 is used to cut the welding strip 3.

[0078] The welding strip processing device provided in this embodiment includes the welding strip pressing mechanism 18 described above. Therefore, the technical advantages and effects achieved by the welding strip processing device include the technical advantages and effects achieved by the welding strip pressing mechanism 18 described above, which will not be repeated here.

[0079] In this embodiment, the welding strip 3 released from the coil passes sequentially through the welding strip stretching and clamping mechanism 19, the welding strip flattening mechanism 20, the welding strip pressing mechanism 18, and the welding strip cutting mechanism 21, and is then clamped by the welding strip traction mechanism.

[0080] Operation process: The welding strip clamping mechanism 18 and the welding strip stretching clamping mechanism 19 clamp the welding strip 3. The welding strip stretching clamping mechanism 19 retracts and stretches the welding strip 3 along the pulling direction of the welding strip 3. Then the welding strip flattening mechanism 20 flattens the round welding strip 3 at the designated position to form a flat welding strip segment 6.

[0081] Two welding strip flattening mechanisms 20 can be set along the pulling direction of the welding strip 3. The two welding strip flattening mechanisms 20 work simultaneously, and can flatten two welding strip segments 6 at the same time, improving work efficiency. Optionally, the two welding strip flattening mechanisms 20 can also move laterally after flattening once, and then flatten a second time, for a total of four flat welding strip segments 6. After flattening, the welding strip traction mechanism pulls out the flattened welding strip 3, the welding strip clamping mechanism 18 presses down on the last set of flat welding strip segments 6 to prevent the welding strip 3 from flipping, and the welding strip cutting mechanism 21 cuts the welding strip 3.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A welding strip pressing mechanism, characterized in that, The welding strip pressing mechanism includes: a mounting bracket, a pressing head assembly, a pad, and a lifting drive mechanism; Both the pressure head assembly and the pad are mounted on the mounting bracket, and the pressure head assembly and the pad are arranged vertically, with a space between the pressure head assembly and the pad for the welding strip to pass through. The pressure head assembly includes a first pressure head group and a second pressure head group. Along the pulling direction of the welding strip, the first pressure head group is located in front of the second pressure head group. The first pressure head group includes a plurality of first pressure heads arranged side by side along a first direction. The second pressure head group includes a plurality of second pressure heads arranged side by side along the first direction. The first pressure head and the second pressure head are each arranged in a one-to-one correspondence with the welding strip. The first direction is perpendicular to the pulling direction of the welding strip. Each of the welding strips includes at least one group of adjacent flat welding strip segments and non-flat welding strip segments along the pulling direction. The flat welding strip segments in the same group are located in front of the non-flat welding strip segments. The driving end of the lifting drive mechanism is connected to the pressure head assembly. The lifting drive mechanism is used to drive the pressure head assembly to lift and lower. When the lifting drive mechanism drives the pressure head assembly to move toward the pad, the first pressure head and the second pressure head can respectively press the flat welding strip segments and non-flat welding strip segments in the same group onto the pad. The clamping force of the first pressure head on the flat welded strip is less than the clamping force of the second pressure head on the non-flat welded strip.

2. The welding strip pressing mechanism according to claim 1, characterized in that, The pressure head assembly further includes a pressure head mounting plate, a first spring, and a second spring. The ends of the first pressure head and the second pressure head that are away from the pad can be slidably mounted on the pressure head mounting plate. The first spring is sleeved on the first pressure head and press-fitted between the pressure head mounting plate and the pressing end of the first pressure head; the second spring is sleeved on the second pressure head and press-fitted between the pressure head mounting plate and the pressing end of the second pressure head. The pressure head mounting plate is connected to the drive end of the lifting drive mechanism.

3. The welding strip pressing mechanism according to claim 2, characterized in that, The spring constant of the first spring is less than that of the second spring.

4. The welding strip pressing mechanism according to claim 2, characterized in that, In the non-pressurized state, the distance between the pressing end of the first pressing head and the pad is smaller than the distance between the pressing end of the second pressing head and the pad.

5. The welding strip pressing mechanism according to claim 2, characterized in that, The mounting bracket includes a top plate, a bottom plate, and a pair of side plates; The top plate is detachably connected to the top of the pair of side plates by means of pins at both ends, and the bottom plate is fixedly connected to the bottom of the pair of side plates at both ends; Both the pressure head assembly and the pad are disposed between the top plate and the bottom plate; The pad is connected to the base plate, the lifting drive mechanism is disposed on the top plate, and the drive end of the lifting drive mechanism passes through the top plate and is connected to the pressure head mounting plate; or, the pad is connected to the top plate, the lifting drive mechanism is disposed on the base plate, and the drive end of the lifting drive mechanism passes through the base plate and is connected to the pressure head mounting plate.

6. The welding strip pressing mechanism according to claim 5, characterized in that, The pressure head mounting plate is located above the pad plate; The mounting bracket further includes a limiting pad, which is disposed between the pressure head mounting plate and the base plate and connected to the base plate. The limiting pad is used to limit the descent stroke of the pressure head mounting plate; and / or, The mounting bracket also includes lifting guide columns, which are disposed on both sides of the pressure head mounting plate. The upper end of each lifting guide column is slidably connected to the top plate, and the lower end of each lifting guide column is connected to the pressure head mounting plate.

7. The welding strip pressing mechanism according to claim 5, characterized in that, The pressure head mounting plate is located below the pad plate; The mounting bracket further includes a limiting pad, which is disposed between the pressure head mounting plate and the top plate and connected to the top plate. The limiting pad is used to limit the upward stroke of the pressure head mounting plate; and / or, The mounting bracket also includes lifting guide columns, which are disposed on both sides of the pressure head mounting plate. The lower end of each lifting guide column is slidably connected to the base plate, and the upper end of each lifting guide column is connected to the pressure head mounting plate.

8. The welding strip pressing mechanism according to claim 1, characterized in that, The pad is provided with a plurality of limiting guide posts arranged side by side along the first direction, and a gap is provided between adjacent limiting guide posts for a single welding strip to pass through.

9. The welding strip pressing mechanism according to any one of claims 1-8, characterized in that, Along the pulling direction of the weld strip, the length of the pressing end of the first pressure head is less than or equal to the length of the flat weld strip segment; and / or, Along the pulling direction of the welding strip, the length of the pressing end of the first pressure head is less than the length of the pressing end of the second pressure head.

10. A welding strip processing device, characterized in that, The welding strip processing device includes a welding strip stretching and clamping mechanism, a welding strip flattening mechanism, a welding strip cutting mechanism, a welding strip traction mechanism, and a welding strip pressing mechanism as described in any one of claims 1-9; The welding strip traction mechanism is used to pull out the welding strip released from the coil. The welding strip passes sequentially through the welding strip stretching and clamping mechanism, the welding strip flattening mechanism, the welding strip pressing mechanism, and the welding strip cutting mechanism. The welding strip stretching and clamping mechanism and the welding strip pressing mechanism can cooperate to clamp and stretch the welding strip; The welding strip flattening mechanism is used to flatten the welding strip located between the welding strip stretching and clamping mechanism and the welding strip pressing mechanism to prepare N flat welding strip segments, wherein the welding strip that is not flattened is a non-flat welding strip segment, and the flat welding strip segments and the non-flat welding strip segments are arranged alternately, N≥1; The welding strip traction mechanism is used to pull the welding strip flattened by the welding strip flattening mechanism forward. The welding strip pressing mechanism is also used to press down the Nth flat welding strip segment and the Nth non-flat welding strip segment in the welding strip pulled by the welding strip traction mechanism; The welding strip cutting mechanism is used to cut the welding strip.

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