Bus bar punching and bending module

Abstract

The utility model relates to the field of solar cell stitch welding machines, in particular to a bus bar punching and bending module which comprises a base, a transfer positioning plate, a punching device and a bending device, the transfer positioning plate, the punching device and the bending device are installed on the base, and the transfer positioning plate is used for temporarily placing a bus bar and restraining the side wall of the bus bar. The punching device and the bending device are respectively used for punching and bending the bus bar; the bending device comprises a bending movable plate, a second Z-axis driver, a bending static plate, a bending pressing plate and a pressing plate driver, the bending pressing plate is used for being matched with the bending static plate to clamp the upper face and the lower face of the bus bar, and the second Z-axis driver is used for driving the bending movable plate to move, so that the end of the bus bar is bent to a proper angle; the pressing plate driver is used for driving the bending pressing plate to move so as to clamp the bus bar or avoid the space over the bus bar. According to the embodiment of the utility model, after the bus bar is punched and bent, no shielding object is arranged right above the bus bar, so that the bus bar can be easily carried by the bus bar crossing distance type carrying module.

Description

Technical Field

[0001] This utility model relates to the field of solar cell stacking machines, specifically to a busbar punching and bending module. Background Technology

[0002] In the process of producing solar cells using a stacked bonding machine, it is necessary to perform steps such as straightening, cutting, punching, and bending the wound busbars. Among these steps, punching and bending the busbars involves the busbar punching and bending module.

[0003] Existing technologies disclose equipment for automatically punching and bending busbars, such as the interconnecting strip cutting mechanism for solar cell busbar welding device disclosed in CN105436359A. Such conventional equipment can automatically bend busbars, and with slight modifications, can also automatically punch busbars.

[0004] However, the existing equipment is inconvenient for loading and unloading materials, and is only suitable for manual, small-batch production. It is not suitable for use in automated, large-scale production of solar cells in stacking machines. Utility Model Content

[0005] The purpose of this utility model is to provide a busbar punching and bending module to solve the problem of difficult loading and unloading of existing busbar punching and bending modules.

[0006] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution:

[0007] A busbar punching and bending module includes a base, a transfer positioning plate, a punching device, and a bending device mounted on the base. The transfer positioning plate is used to temporarily place the busbar and constrain its sidewalls. The punching device and the bending device are used to punch and bend the busbar, respectively. The bending device includes a bending moving plate, a second Z-axis driver, a bending stationary plate, a bending pressure plate, and a pressure plate driver. The bending moving plate is movably connected to the base along the Z-axis direction and is located near the end of the busbar. When the bending moving plate is in its lowest position, its top wall is at the same height as the top wall of the transfer positioning plate. The bending stationary plate is fixedly connected to the base and located away from the end of the busbar. Its top wall is at the same height as the top wall of the transfer positioning plate. The bending pressure plate is movably connected to the base. The first Z-axis driver is located above the bending stationary plate and is used to cooperate with the bending stationary plate to clamp the upper and lower surfaces of the busbar. The second Z-axis driver is fixedly connected to the base, and the actuator of the second Z-axis driver is connected to the bending moving plate. The second Z-axis driver is used to drive the bending moving plate to move vertically along the Z-axis direction. When the bending moving plate is at its highest position, the end of the busbar is bent to a suitable angle. The second Z-axis driver is connected to the base, and the actuator of the pressure plate driver is driven to the bending pressure plate. The pressure plate driver is used to drive the bending pressure plate to move. When the bending moving plate moves upward, the bending pressure plate cooperates with the bending stationary plate to clamp the upper and lower surfaces of the busbar, so that the end of the busbar is bent. When the bending moving plate moves downward, the bending pressure plate avoids the space directly above the busbar.

[0008] Furthermore, the bending moving plate is rotatably connected to the base. As the bending moving plate rotates, one end of the bending pressure plate can move downward to press down on the busbar, or move upward to avoid the transport path of the busbar.

[0009] Furthermore, the pressure plate driver includes a single-axis cylinder, and the other end of the bending pressure plate is connected to the actuator of the single-axis cylinder via a first rotating shaft. The single-axis cylinder is rotatably connected to the base via a second rotating shaft. The single-axis cylinder is used to drive the first rotating shaft to move closer to or further away from the second rotating shaft, thereby causing the bending plate to rotate in the forward or reverse direction.

[0010] Further, the punching device includes a first Z-axis driver, a die frame, a punch, and a die; the first Z-axis driver and the die frame are fixedly connected to the base, the first Z-axis driver has an actuator that moves along the Z-axis direction, and the Z-axis is vertically arranged; the die is fixed on the die frame, the die is located directly below the punch, the die has a die hole that passes through itself along the Z-axis direction, the punch can move along the Z-axis direction on the die frame, the punch has a punch that matches the die hole, and the end of the busbar is disposed between the die and the punch; the punch is drivenly connected to the actuator of the first Z-axis driver, the first Z-axis driver drives the punch to move up and down, so that the punch is inserted into the die hole of the die, thereby punching a through hole at the end of the busbar.

[0011] Furthermore, a pressure plate is suspended below the punch. The pressure plate is connected to the actuator of the first Z-axis driver via a guide mechanism, allowing the pressure plate to slide relative to the punch along the Z-axis. The pressure plate has a clearance hole for the punch to pass through, and the punch is embedded in the clearance hole. A spring is provided between the pressure plate and the actuator of the first Z-axis driver, and the spring applies a downward force to the pressure plate, so that when no other external force is applied, the pressure plate and the actuator of the first Z-axis driver always maintain the maximum distance allowed by the guide mechanism.

[0012] Furthermore, a waste trough is provided below the die cavity.

[0013] Furthermore, the punch has two punches, and the die has two die holes.

[0014] Furthermore, the transfer positioning plate includes a strip and a plurality of positioning post groups installed on the strip and distributed along the X-axis. Each positioning post group includes two positioning posts arranged in pairs along the Y-axis. Both the X-axis and the Y-axis are horizontal, and the X-axis is perpendicular to the Y-axis. The cut busbar is placed on the strip, and the two sides of the busbar abut against the outer peripheral surfaces of the two positioning posts respectively, thereby constraining the sidewalls of the busbar.

[0015] Furthermore, the strip is provided with a plurality of bolt hole groups corresponding to each of the positioning posts. Each bolt hole group includes a row of bolt holes distributed along the C-axis direction. The C-axis is horizontally set and located between the X-axis and the Y-axis. When the positioning post is installed inside different bolt holes in the C-axis direction, the distance between two adjacent positioning posts in the Y-axis direction can be changed.

[0016] Furthermore, the strip is provided with a downwardly recessed groove that surrounds the bolt hole group. The groove is used to embed into the bottom end of the positioning post, so that the side wall of the manifold can contact the outer peripheral surface of the positioning post without contacting the lower edge of the positioning post.

[0017] Compared with the prior art, this application has the following advantages:

[0018] A busbar punching and bending module is provided. After the busbar is punched and bent, there are no obstructions directly above it, making it easy to be transported by the busbar interleaving transport module. It can be integrated into the solar cell stacking machine to improve the automation efficiency of the existing stacking machine. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0021] Figure 2 This is a top view of a partial location of an embodiment of the present utility model;

[0022] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0023] Figure 4 for Figure 2 A cross-sectional view along the BB direction;

[0024] Figure 5 for Figure 2 A cross-sectional view along the CC direction;

[0025] The labels in the diagram represent the following:

[0026] 1-Base; 2-Transfer positioning plate; 21-Strip; 22-Positioning column group; 23-Bolt hole group; 24-Groove; 3-Punching device; 31-First Z-axis driver; 32-Die frame; 33-Punch; 331-Punch; 34-Die; 341-Die hole; 35-Pressure plate; 351-Allowing hole; 36-Guide mechanism; 37-Spring; 38-Scrap trough; 4-Bending device; 41-Bending moving plate; 42-Second Z-axis driver; 43-Bending stationary plate; 44-Bending pressure plate; 45-Pressure plate driver; 451-Single-axis cylinder; 452-First rotating shaft; 453-Second rotating shaft. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The existing busbar punching and bending module has relatively inconvenient loading and unloading, and is only suitable for manual, small-batch production. It is not suitable for use in automated, large-scale solar cell stacking machines. To solve this problem, a busbar punching and bending module is provided below.

[0029] refer to Figure 1 The busbar punching and bending module includes a base 1, a transfer positioning plate 2, a punching device 3, and a bending device 4 installed on the base 1.

[0030] The transfer positioning plate 2 is used to temporarily place the busbar and constrain the side wall of the busbar so that the busbar maintains its initial position when it is punched and bent. The punching device 3 and the bending device 4 are installed on the transfer positioning plate 2 to punch and bend the busbar without hindering the upward movement of the busbar.

[0031] The transfer positioning plate 2 is set between the busbar bidirectional cutting module and the busbar interleaved transport module. The busbar cut to a fixed length is placed here. After the busbar is punched and bent, it is moved to the welding pad by the busbar interleaved transport module.

[0032] refer to Figure 2 The punching and bending of the busbar are carried out separately. The busbar is bent on the first transfer positioning plate 2, punched on the second transfer positioning plate 2, and waits to be transported to the busbar welding module on the third transfer positioning plate 2. It can be seen that the busbar punching and bending module includes at least two transfer positioning plates 2.

[0033] For the specific structure of transfer positioning plate 2, please refer to... Figure 2 The transfer positioning plate 2 has a long and narrow rectangular top wall with its length direction parallel to the horizontal X-axis direction, which is used to support and position the cut busbar.

[0034] The transfer positioning plate 2 includes a strip 21 and a plurality of positioning post groups 22 installed on the strip 21 and distributed along the X-axis. Each positioning post group 22 includes two positioning posts arranged in pairs along the Y-axis. The Y-axis is horizontal and perpendicular to the X-axis. The cut busbar is placed on the strip 21, and the two sides of the busbar abut against the outer circumferential surfaces of the two positioning posts to achieve the positioning of the busbar.

[0035] Furthermore, the distance between the two positioning posts can be adjusted. In this embodiment, the positioning posts are bolts, and the strip 21 is provided with a number of bolt hole groups 23 corresponding to each positioning post. Each bolt hole group 23 includes a row of bolt holes distributed along the C-axis direction. The C-axis is set horizontally and the angle is between the X-axis and the Y-axis. By installing the positioning posts inside different bolt holes in the C-axis direction, the distance between two adjacent positioning posts in the Y-axis direction can be changed, thereby adapting to busbars of different widths.

[0036] In addition, the strip 21 is provided with a recessed groove 24 that surrounds the bolt hole group 23. The groove 24 is used to embed into the bottom end of the positioning post, so that the side wall of the busbar can contact the outer peripheral surface of the positioning post without contacting the lower edge of the positioning post. This avoids the burrs on the lower edge of the positioning post from affecting the positioning of the busbar, or avoids the verticality of the positioning post from affecting the positioning of the busbar.

[0037] For the specific structure of the punching device 3, please refer to... Figure 3 and Figure 4 The punching device 3 includes: a first Z-axis driver 31, a mold frame 32, a punch 33, and a die 34.

[0038] The first Z-axis driver 31 and the mold frame 32 are fixedly connected to the base 1. The first Z-axis driver 31 has an actuator that moves along the Z-axis direction, and the Z-axis is vertically arranged.

[0039] The die 34 is fixed on the mold frame 32. The die 34 has a die hole 341 that passes through itself along the Z-axis direction. The punch 33 can move along the Z-axis direction on the mold frame 32. The punch 33 has a punch 331 that matches the die hole 341. The end of the manifold is disposed between the die 34 and the punch 33.

[0040] The die 34 is located directly below the punch 33. The first Z-axis driver 31 is a cylinder slide, and the punch 33 is connected to the actuator of the first Z-axis driver 31. The first Z-axis driver 31 drives the punch 33 to move up and down, so that the punch 331 is inserted into the die hole 341 of the die 34, thereby punching a through hole at the end of the busbar.

[0041] In addition, to improve the accuracy of punching holes on the busbar, a pressure plate 35 is suspended below the punch 33. The pressure plate 35 is connected to the actuator of the first Z-axis driver 31 through the guide mechanism 36, so that the pressure plate 35 can slide relative to the punch 33 in the Z-axis direction. The pressure plate 35 is provided with a clearance hole 351 for the punch 331 to pass through, and the punch 331 is embedded in the through hole.

[0042] A spring 37 is provided between the pressure plate 35 and the actuator of the first Z-axis driver 31. The spring 37 applies a downward force to the pressure plate 35 so that the maximum distance allowed by the guide mechanism 36 is always maintained between the pressure plate 35 and the actuator of the first Z-axis driver 31 when no other external force is applied.

[0043] In addition, a waste groove 38 is provided below the die 34 to facilitate the discharge of punched waste from the bottom of the die 34.

[0044] The working method of the punching device 3 includes:

[0045] Step 1: The first Z-axis driver 31 drives the punch 33 to move downward. The pressure plate 35 first contacts the busbar and clamps the busbar between the pressure plate 35 and the die 34, preventing the workpiece from moving. Then the punch 33 continues to move downward, and the punch 331 passes through the clearance hole 351 on the pressure plate 35 and inserts into the die hole 341 in the die 34 to complete the punching of the busbar.

[0046] Step 2: The first Z-axis driver 31 drives the punch 33 to move upward. The punch 331 first leaves the die hole 341 and separates from the manifold. Then the punch 33 continues to move upward, and the punch 331 retracts into the interior of the clearance hole 351. Then the pressure plate 35 separates from the manifold, and the punch 331 and the pressure plate 35 return to the initial position.

[0047] Furthermore, in order to improve the punching efficiency of the punching device 3, the punch 33 of the punching device 3 has two punches 331 and the die 34 has two die holes 341, so that one punching device 3 can perform punching operations on the ends of two busbars at the same time.

[0048] Regarding the specific structure of bending device 4, in conjunction with... Figure 2 , Figure 5 The bending device 4 includes: a bending moving plate 41, a second Z-axis driver 42, a bending stationary plate 43, a bending pressure plate 44, and a pressure plate driver 45.

[0049] The bending moving plate 41 is movably connected to the base 1 along the Z-axis and is close to the end of the busbar. When the bending moving plate 41 is in the lowest position, the top wall of the bending moving plate 41 is at the same height as the top wall of the transfer positioning plate 2.

[0050] The bent stationary plate 43 is fixedly connected to the base 1 and is located away from the end of the busbar. The top wall of the bent stationary plate 43 is at the same height as the top wall of the transfer positioning plate 2.

[0051] The bending pressure plate 44 is movably connected to the base 1 and is located above the bending stationary plate 43, and is used to cooperate with the bending stationary plate 43 to clamp the upper and lower sides of the busbar.

[0052] The second Z-axis driver 42 is fixedly connected to the base 1, and the actuator of the second Z-axis driver 42 is connected to the bending moving plate 41. The second Z-axis driver 42 adopts a cylinder slide table. The second Z-axis driver 42 is used to drive the bending moving plate 41 to move vertically along the Z-axis direction. When the bending moving plate 41 is at the highest position, the end of the busbar is bent to a suitable angle.

[0053] The pressure plate driver 45 is connected to the base 1, and the actuator of the pressure plate driver 45 is driven to the bending pressure plate 44. The pressure plate driver 45 is used to drive the bending pressure plate 44 to move. When the bending moving plate 41 moves upward, the bending pressure plate 44 cooperates with the bending stationary plate 43 to clamp the upper and lower sides of the busbar, so that the end of the busbar is bent. When the bending moving plate 41 moves downward, the bending pressure plate 44 avoids the space directly above the busbar, so that the busbar can be transported by the busbar interleaved transport module along the Z-axis direction.

[0054] Specifically, the bending moving plate 41 is rotatably connected to the base 1. As the bending moving plate 41 rotates, one end of the bending pressure plate 44 can move downward to press down on the busbar, or move upward to avoid the transport path of the busbar. The other end of the bending pressure plate 44 is connected to the pressure plate driver 45 through the first rotating shaft 452. The pressure plate driver 45 includes a single-axis cylinder 451. The single-axis cylinder 451 is rotatably connected to the base 1 through the second rotating shaft 453. The single-axis cylinder 451 is used to drive the second rotating shaft 453 to move closer to or away from the first rotating shaft 452, thereby causing the bending moving plate 41 to rotate in the forward or reverse direction.

[0055] The working method of bending device 4 includes:

[0056] Step 1: The pressure plate driver 45 drives the bending pressure plate 44 to rotate in the forward direction, so that the busbar is pressed on the bending stationary plate 43. Then the second Z-axis driver 42 drives the bending moving plate 41 to move upward, so that the end of the busbar is bent.

[0057] Step 2: The second Z-axis driver 42 drives the bending moving plate 41 to move downward to complete the reset action. Then, the pressure plate driver 45 drives the bending pressure plate 44 to rotate in the opposite direction so that there is no obstruction directly above the busbar.

[0058] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered as falling within the scope of protection of this utility model.

Claims

1. A busbar punching and bending module, characterized in that, Includes a base (1), and a transfer positioning plate (2), a punching device (3) and a bending device (4) installed on the base (1). The transfer positioning plate (2) is used to temporarily place the busbar and constrain the side wall of the busbar. The punching device (3) and the bending device (4) are used to punch and bend the busbar, respectively. The bending device (4) includes a bending moving plate (41), a second Z-axis driver (42), a bending stationary plate (43), a bending pressure plate (44), and a pressure plate driver (45). The bending moving plate (41) is movably connected to the base (1) along the Z-axis direction and is close to the end of the busbar. When the bending moving plate (41) is in the lowest position, the top wall of the bending moving plate (41) is at the same height as the top wall of the transfer positioning plate (2). The bent stationary plate (43) is fixedly connected to the base (1) and is located away from the end of the busbar. The top wall of the bent stationary plate (43) is at the same height as the top wall of the transfer positioning plate (2). The bending pressure plate (44) is movably connected to the base (1) and is located above the bending stationary plate (43), and is used to cooperate with the bending stationary plate (43) to clamp the upper and lower sides of the busbar; The second Z-axis driver (42) is fixedly connected to the base (1), and the actuator of the second Z-axis driver (42) is connected to the bending moving plate (41). The second Z-axis driver (42) is used to drive the bending moving plate (41) to move vertically along the Z-axis direction. When the bending moving plate (41) is at the highest position, the end of the busbar is bent to a suitable angle. The pressure plate driver (45) is connected to the base (1), and the actuator of the pressure plate driver (45) is connected to the bending pressure plate (44). The pressure plate driver (45) is used to drive the bending pressure plate (44) to move. When the bending moving plate (41) moves upward, the bending pressure plate (44) cooperates with the bending stationary plate (43) to clamp the upper and lower sides of the busbar, so that the end of the busbar is bent. When the bending moving plate (41) moves downward, the bending pressure plate (44) avoids the space directly above the busbar.

2. The busbar punching and bending module according to claim 1, characterized in that, The bending moving plate (41) is rotatably connected to the base (1). As the bending moving plate (41) rotates, one end of the bending pressure plate (44) can move downward to press down on the busbar, or move upward to avoid the transport path of the busbar.

3. The busbar punching and bending module according to claim 2, characterized in that, The pressure plate driver (45) includes a single-axis cylinder (451). The other end of the bending pressure plate (44) is connected to the actuator of the single-axis cylinder (451) via a first rotating shaft (452). The single-axis cylinder (451) is rotatably connected to the base (1) via a second rotating shaft (453). The single-axis cylinder (451) is used to drive the first rotating shaft (452) to move closer to or away from the second rotating shaft (453), thereby causing the bending moving plate (41) to rotate in the forward or reverse direction.

4. The busbar punching and bending module according to claim 1, characterized in that, The punching device (3) includes a first Z-axis driver (31), a mold frame (32), a punch (33) and a die (34). The first Z-axis driver (31) and the mold frame (32) are fixedly connected to the base (1). The first Z-axis driver (31) has an actuator that moves along the Z-axis direction, and the Z-axis is vertically arranged. The die (34) is fixed on the mold frame (32). The die (34) is located directly below the punch (33). The die (34) has a die hole (341) that passes through itself along the Z-axis direction. The punch (33) can move along the Z-axis direction on the mold frame (32). The punch (33) has a punch (331) that matches the die hole (341). The end of the manifold is disposed between the die (34) and the punch (33). The punch (33) is connected to the actuator of the first Z-axis driver (31) for transmission. The first Z-axis driver (31) drives the punch (33) to move up and down, so that the punch (331) is inserted into the die hole (341) of the die (34), thereby punching a through hole at the end of the busbar.

5. A busbar punching and bending module according to claim 4, characterized in that, A pressure plate (35) is suspended below the punch (33). The pressure plate (35) is connected to the execution part of the first Z-axis driver (31) through a guide mechanism (36), so that the pressure plate (35) can slide relative to the punch (33) along the Z-axis direction. The pressure plate (35) is provided with a clearance hole (351) for the punch (331) to pass through. The punch (331) is embedded in the clearance hole (351). A spring (37) is provided between the pressure plate (35) and the execution part of the first Z-axis driver (31). The spring (37) applies a downward force to the pressure plate (35), so that when no other external force is applied, the pressure plate (35) and the execution part of the first Z-axis driver (31) always maintain the maximum distance allowed by the guide mechanism (36).

6. A busbar punching and bending module according to claim 4, characterized in that, A waste trough (38) is provided below the die (34).

7. A busbar punching and bending module according to claim 4, characterized in that, The punch (33) has two punches (331), and the die (34) has two die holes (341).

8. A busbar punching and bending module according to any one of claims 1 to 7, characterized in that, The transfer positioning plate (2) includes a strip (21) and a plurality of positioning post groups (22) installed on the strip (21) and distributed along the X-axis. Each positioning post group (22) includes two positioning posts arranged in pairs along the Y-axis. The X-axis and Y-axis are both horizontal, and the X-axis is perpendicular to the Y-axis. The cut busbar is placed on the strip (21), and the two sides of the busbar abut against the outer peripheral surfaces of the two positioning posts respectively to achieve the constraint of the sidewalls of the busbar.

9. A busbar punching and bending module according to claim 8, characterized in that, The strip (21) is provided with a plurality of bolt hole groups (23) corresponding to each of the positioning posts. Each bolt hole group (23) includes a row of bolt holes distributed along the C-axis direction. The C-axis is horizontally set and located between the X-axis and the Y-axis. When the positioning post is installed inside different bolt holes in the C-axis direction, the distance between two adjacent positioning posts in the Y-axis direction can be changed.

10. A busbar punching and bending module according to claim 9, characterized in that, The strip (21) is provided with a groove (24) that is recessed downward and surrounds the bolt hole group (23). The groove (24) is used to embed into the bottom end of the positioning post, so that the side wall of the busbar can contact the outer peripheral surface of the positioning post without contacting the lower edge of the positioning post.

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