Strip preparation device

Abstract

The utility model provides a strip preparation device which comprises a pressing mechanism, a cutting mechanism and a traction mechanism which are sequentially arranged in the first direction, and further comprises a splicing detection mechanism arranged in front of the pressing mechanism or arranged between the pressing mechanism and the cutting mechanism. The traction mechanism clamps the free end of the strip from the cutting mechanism and drags the strip penetrating through the splicing detection mechanism, the pressing mechanism and the cutting mechanism away from the cutting mechanism. The splicing detection mechanism identifies the thickness abnormal part of the strip; the traction mechanism drags the abnormal thickness part of the strip out of the cutting mechanism, so that the abnormal thickness part of the strip is located on the outer side of the cutting mechanism. The cutting-off mechanism cuts off the strip, and the pressing mechanism presses the strip when the cutting-off mechanism cuts off the strip. According to the strip preparation device, the part with the abnormal thickness can be detected and positioned, the part with the abnormal thickness can be removed, and the part with the abnormal thickness is prevented from flowing into a subsequent station.

Description

Technical Field

[0001] This application relates to the field of photovoltaic cell module production equipment, and more specifically, to a strip preparation device. Background Art

[0002] During the production process of photovoltaic modules, there is a process of welding busbars to the ends of the battery string groups that have been typeset. Before welding the busbars, it is necessary to cut the busbars released from the material roll to obtain busbars with a target length value.

[0003] When the busbars on the busbar material roll are almost used up, a new material roll needs to be replaced. To ensure the continuous supply of busbars, when cutting the busbars on the old material roll and removing the old material roll, it is necessary to perform lap welding on the end of the busbar left after cutting and the free end of the busbar on the new material roll to achieve the connection of the old and new busbars. However, the connected part of the busbars cannot be used for subsequent busbar welding and needs to be removed. Utility Model Content

[0004] To solve the above technical problems, this application provides a strip preparation device, which adopts the following technical solutions:

[0005] A strip preparation device includes a pressing mechanism, a cutting mechanism, and a traction mechanism arranged in sequence along a first direction. The strip preparation device further includes a connection detection mechanism arranged in front of the pressing mechanism or between the pressing mechanism and the cutting mechanism, where:

[0006] The traction mechanism is configured to clamp the free end of the strip from the cutting mechanism and traction the strip passing through the connection detection mechanism, the pressing mechanism, and the cutting mechanism along the first direction away from the cutting mechanism;

[0007] The connection detection mechanism is configured to identify abnormal thickness parts of the strip;

[0008] The traction mechanism is further configured to traction the abnormal thickness part of the strip out of the cutting mechanism, so that the abnormal thickness part of the strip is located outside the cutting mechanism;

[0009] The cutting mechanism is configured to cut the strip;

[0010] The pressing mechanism is configured to press the strip when the cutting mechanism cuts the strip.

[0011] The strip preparation device provided by this application is provided with a connection detection mechanism, which can automatically detect and locate the abnormal thickness parts on the strip, so as to remove the abnormal thickness parts and prevent the abnormal thickness parts from flowing into the subsequent workstations.

[0012] Since the new and old busbars are connected in a lapped welding manner, the thickness of the connection part is thicker than that of the other parts of the busbar. The thickness abnormal part detected by the connection detection mechanism is the connection part. After detecting the thickness abnormal part, the traction mechanism is controlled to pull the thickness abnormal part of the busbar out of the cutting mechanism, and then the cutting mechanism is controlled to cut the busbar, so as to realize the removal of the thickness abnormal part of the busbar and prevent it from flowing into the subsequent busbar welding station. That is to say, the strip preparation device in the embodiment of the present application is suitable for implementing the preparation of busbars, which can ensure that the connection parts on the busbars are removed and ensure that there are no connection parts on the target busbars to be prepared.

[0013] In some embodiments, the connection detection mechanism includes a mounting base, a first roller, a second roller, a moving rod, an elastic member and a sensor, wherein: the first roller is rotatably mounted on the mounting base; the moving rod is slidably mounted on the mounting base along the second direction, and an elastic member is arranged between the moving rod and the mounting base, wherein the second direction is the thickness direction of the strip; the second roller is rotatably mounted on the first end of the moving rod, and the strip passes through between the second roller and the first roller along the first direction, and the second roller elastically presses the strip against the first roller under the pushing of the elastic member; the sensor is mounted on the mounting base, and when the moving rod slides away from the first roller along the second direction to the sensing position, the sensor is triggered to generate a sensing signal.

[0014] A connection detection mechanism with a simple structure is provided, which can automatically complete the automatic detection and positioning of the connection section during the traction of the strip by the traction mechanism, and the traction of the strip does not need to be stopped during the detection process, so as not to affect the preparation efficiency of the strip.

[0015] In addition, when the strip passes through the first roller and the second roller, the first roller and the second roller roll under the drive of the strip, so it will not hinder the traction and conveying of the strip, and can also reduce the friction on the strip.

[0016] In some embodiments, the mounting base includes a first seat body and a second seat body, wherein: one of the first seat body and the second seat body is provided with a waist-shaped hole extending along the second direction, and the other of the first seat body and the second seat body is provided with a connection screw hole matching the waist-shaped hole, and the second seat body is connected to the first seat body through a bolt passing through the waist-shaped hole and the connection screw hole in a position-adjustable manner; the moving rod is slidably inserted into the second seat body, and the elastic member is arranged between the moving rod and the second seat body.

[0017] By adjusting the mounting position of the second seat body in the second direction, the pushing force of the elastic member can be adjusted to ensure that when the strip passes between the second roller and the first roller, the second roller can elastically press the strip against the first roller, so that the connection detection mechanism can adapt to the detection of strips with different thicknesses and enhance the compatibility of the present utility model.

[0018] In some embodiments, the second end of the moving rod passes through the mounting seat outwardly. The sensor is mounted on the mounting seat and close to the second end of the moving rod. When the moving rod slides to the sensing position, the second end of the moving rod triggers the sensor; alternatively, a triggering member is provided on the moving rod, the sensor is mounted on the mounting seat and close to the triggering member, and when the moving rod slides to the sensing position, the triggering member triggers the sensor.

[0019] Triggering the sensor through the second end of the moving rod makes the structure of the continuous connection detection mechanism simpler and the cost lower. By providing a triggering member on the moving rod, the triggering reliability of the sensor can be improved.

[0020] In some embodiments, the sensor is a proximity sensor or a photoelectric sensor.

[0021] Two sensors with simple structures and sensitive responses are provided, and both can be triggered to generate sensing signals when the moving rod slides away from the first roller along the second direction to the sensing position.

[0022] In some embodiments, the continuous connection detection mechanism is a double-sheet detector. The receiving end and the transmitting end of the double-sheet detector are arranged at intervals along the thickness direction of the strip, and the strip passes through between the receiving end and the transmitting end of the double-sheet detector.

[0023] The double-sheet detector can emit different signals when the continuous connection section of the strip and the rest of the normal parts of the strip pass through its receiving end and transmitting end, so as to realize the detection and positioning of the continuous connection section on the strip.

[0024] In some embodiments, the traction mechanism includes a translation driving module, a mounting plate and a clamping component. The mounting plate is connected to the movable part of the translation driving module, and the clamping component is arranged on the mounting plate; the translation driving module is configured to drive the mounting plate to translate along the first direction to drive the clamping component to clamp the free end of the strip from the cutting mechanism and pull the strip away from the cutting mechanism.

[0025] A traction mechanism with a simple structure is provided, which drives the clamping component to translate in the first direction through the translation driving module, so as to drive the clamping component to clamp the free end of the strip from the cutting mechanism and pull the strip away from the cutting mechanism.

[0026] In some embodiments, the pressing mechanism includes a first mounting bracket, a bearing plate, a pressing block and a pressing driving module, wherein: the bearing plate is fixedly mounted on the first mounting bracket; the pressing block is connected to the movable part of the pressing driving module; the strip passes through between the pressing block and the bearing plate, and the pressing driving module is configured to drive the pressing block to move towards or away from the bearing plate to press or release the strip.

[0027] A pressing mechanism with a simple structure is provided, which drives a pressing block to move towards or away from a bearing plate through a pressing drive module, so as to press or release a strip passing between the pressing block and the bearing plate.

[0028] In some embodiments, the cutting mechanism includes a second mounting bracket, a fixed cutter, a movable cutter and a cutter drive module, wherein: the fixed cutter is fixedly mounted on the second mounting bracket; the movable cutter is connected to the movable part of the cutter drive module; the strip passes between the movable cutter and the fixed cutter, and the cutter drive module is configured to drive the movable cutter to move towards the fixed cutter to cut the strip.

[0029] A cutting mechanism with a simple structure is provided, which drives a movable cutter to move towards a fixed cutter through a cutter drive module, so as to quickly cut a strip passing between the movable cutter and the fixed cutter. Description of the Drawings

[0030] Figure 1 is a schematic structural diagram of the strip preparation device in the embodiment of the present application;

[0031] Figure 2 is a schematic structural diagram of the continuation detection mechanism in the embodiment of the present application from one perspective;

[0032] Figure 3 is a schematic structural diagram of the continuation detection mechanism in the embodiment of the present application from another perspective;

[0033] Figure 4 is Figure 3 the A-A cross-sectional view of

[0034] Figure 5 is Figure 4 the B-B cross-sectional view of

[0035] Figure 6 is a schematic diagram of the traction process of the strip by the traction mechanism.

[0036] Figures 1 to 6 includes:

[0037] Pressing mechanism 1: first mounting bracket 11, bearing plate 12, pressing block 13, pressing drive module 14;

[0038] Cutting mechanism 2: second mounting bracket 21, fixed cutter 22, movable cutter 23, cutter drive module 24;

[0039] Traction mechanism 3: translation drive module 31, mounting plate 32, clamping component 33;

[0040] Continuity detection mechanism 4: mounting base 41, first roller 42, second roller 43, moving rod 44, elastic member 45, sensor 46, waist-shaped hole 47, screw hole 48, guiding pressure wheel 49, limiting cavity 410, limiting shaft 4110, first seat body 411, second seat body 412. Detailed implementation manners

[0041] To make the above objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0042] As Figure 1 shown, the strip preparation device in the embodiment of the present application includes a pressing mechanism 1, a cutting mechanism 2, and a traction mechanism 3 sequentially arranged along the first direction (for example, the X-axis direction), and a continuity detection mechanism 4 arranged in front of the pressing mechanism 1 or between the pressing mechanism 1 and the cutting mechanism 2, where:

[0043] The traction mechanism 3 is configured to clamp the free end of the strip from the cutting mechanism 2 and traction the strip passing through the continuity detection mechanism 4, the pressing mechanism 1, and the cutting mechanism 2 along the first direction away from the cutting mechanism 2.

[0044] The continuity detection mechanism 4 is configured to identify the thickness abnormal part of the strip.

[0045] The traction mechanism 3 is further configured to traction the thickness abnormal part of the strip out of the cutting mechanism 2, so that the thickness abnormal part of the strip is located outside the cutting mechanism 2.

[0046] The cutting mechanism 2 is configured to cut the strip.

[0047] The pressing mechanism 1 is configured to press the strip when the cutting mechanism cuts the strip.

[0048] In the strip preparation device in the embodiment of the present application, a continuity detection mechanism 4 is provided. The continuity detection mechanism 4 can automatically detect and locate the thickness abnormal part on the strip, so as to realize the rejection of the thickness abnormal part and prevent it from flowing into the subsequent workstations.

[0049] The new and old busbars are continuously connected by lap welding. Therefore, the thickness of the continuous connection part is thicker than the thickness of the rest of the busbar. The thickness abnormal part detected by the continuity detection mechanism 4 is the continuous connection part. After detecting the thickness abnormal part, control the traction mechanism 3 to traction the thickness abnormal part of the busbar out of the cutting mechanism 2, and then control the cutting mechanism 2 to cut the busbar, so as to realize the rejection of the thickness abnormal part of the busbar and prevent it from flowing into the subsequent busbar welding workstation.

[0050] It can be seen that the strip preparation device in the embodiments of the present application is suitable for implementing the preparation of busbars, which can ensure that the continuous joints on the busbars are removed, and there are no continuous joints on the target busbars to be prepared.

[0051] As Figures 2 to 5 shown, optionally, the continuity detection mechanism 4 includes a mounting seat 41, a first roller 42, a second roller 43, a moving rod 44, an elastic member 45 and a sensor 46, wherein: The first roller 42 is rotatably mounted on the mounting seat 41. The moving rod 44 is slidably mounted on the mounting seat 41 along a second direction, and an elastic member 45 is provided between the moving rod 44 and the mounting seat 41, wherein the second direction is the thickness direction of the strip. The second roller 43 is rotatably mounted on the first end of the moving rod 44, and the strip passes through between the second roller 43 and the first roller 42 along a first direction. The second roller 43 elastically presses the strip against the first roller 42 under the pushing of the elastic member 45. The sensor 46 is mounted on the mounting seat 41. When the moving rod 44 slides away from the first roller 42 along the second direction to the sensing position, the sensor 46 is triggered to generate a sensing signal.

[0052] The strip is drawn by the traction mechanism 3 and passes through the second roller 43 and the first roller 42. When the normal part of the strip (i.e., other parts except the thickness abnormal part) passes through between the second roller 43 and the first roller 42, the distance between the second roller 43 and the first roller 42 is equal to the thickness value of the normal part of the strip, and the moving rod 44 deviates from the sensing position.

[0053] When the thickness abnormal part with a larger thickness on the strip enters between the second roller 43 and the first roller 42, the thickness abnormal part pushes the second roller 43, thereby driving the moving rod 44 to slide away from the first roller 42 along the second direction to the sensing position, so that the sensor 46 is triggered to generate a sensing signal.

[0054] Through Figures 2 to 5 the continuity detection mechanism 4 in it, the detection and positioning of the thickness abnormal part are implemented. During the detection process, there is no need to stop the traction of the strip, so that the preparation efficiency of the strip will not be affected. In addition, when the strip passes through the first roller 42 and the second roller 43, the first roller 42 and the second roller 43 roll under the drive of the strip. Therefore, the continuity detection mechanism 4 will not hinder the traction and conveying of the strip.

[0055] Optionally, as Figure 1As shown, the pressing mechanism 1, the cutting mechanism 2, and the traction mechanism 3 are arranged in sequence along the horizontal direction (the X-axis direction in the figure). The traction mechanism 3 traction the strip along the horizontal direction, so that the strip passes through between the second roller 43 and the first roller 42 along the horizontal direction. The moving rod 44 is slidably mounted on the mounting seat 41 along the vertical direction (the Z-axis direction in the figure). That is, the first direction is the horizontal direction, and the second direction is the vertical direction. The second roller 43 is mounted at the lower end of the moving rod 44, and the first roller 42 is located below the second roller 43. The second roller 43 presses the strip downward against the first roller 42. In this way, when the abnormal thickness part on the strip enters between the second roller 43 and the first roller 42, the moving rod 44 slides upward to the sensing position, so that the sensor 46 is triggered to generate a sensing signal.

[0056] Since the thickness of different types of strips may vary greatly, in order to ensure that the continuity detection mechanism 4 can detect strips of different thicknesses and achieve the compatibility of the continuity detection mechanism 4. As Figures 2 to 5 shown, optionally, the mounting seat 41 includes a first seat body 411 and a second seat body 412, where: a waist-shaped hole 47 extending in the second direction is provided on the second seat body 412, and a connecting screw hole 48 matching the waist-shaped hole 47 is provided on the first seat body 411. The second seat body 412 is connected to the first seat body 411 in a position-adjustable manner through a bolt passing through the waist-shaped hole 47 and the connecting screw hole 48. The moving rod 44 is slidably inserted into the second seat body 412, and an elastic member 45 is provided between the moving rod 44 and the second seat body 412. Of course, the waist-shaped hole 47 can also be provided on the first seat body 411, and the connecting screw hole 48 can be provided on the second seat body 412.

[0057] Before detecting the strip, the installation position of the second seat body 412 in the second direction can be adjusted according to the thickness of the strip to ensure that when the strip passes through between the second roller 43 and the first roller 42, the second roller 43 can elastically press the strip against the first roller 42. Specifically, when it is necessary to adjust the installation position of the second seat body 412, first loosen the bolt, then push the second seat body 412 to slide in place along the second direction, and then fix the bolt again.

[0058] Optionally, a limiting portion is provided on the moving rod 44. The limiting portion can be, for example, a limiting step or a limiting ring protruding from the moving rod 44. The elastic member 45 is a spring, and the spring is sleeved on the moving rod 44. The first end of the spring elastically abuts against the limiting portion, and the second end of the spring elastically abuts against the mounting seat 1.

[0059] Since the spring is sleeved on the moving rod 44, after being compressed, it can uniformly apply elastic force to the moving rod 44 along the second direction, so that the second roller 43 can stably press the strip against the first roller 42 elastically, and the moving rod 44 can slide smoothly away from the first roller 42 along the second direction to the sensing position to trigger the sensor 46.

[0060] Continue to refer to Figures 2 to 3 As shown, optionally, the second end (such as the upper end) of the moving rod 44 penetrates out of the mounting seat 1 outward, and the sensor 46 is installed on the mounting seat 41 and close to the second end of the moving rod 44. When the moving rod 44 slides to the sensing position, the second end of the moving rod 44 triggers the sensor 6, causing the sensor 6 to generate a sensing signal. Of course, a trigger member can also be provided on the moving rod 44, and the sensor 46 is installed on the mounting seat 1 and close to the trigger member. When the moving rod 44 slides to the sensing position, the trigger member triggers the sensor 46, causing the sensor 46 to generate a sensing signal. The trigger member can be, for example, a trigger piece, a trigger block and other structural members.

[0061] As Figure 5 As shown, optionally, a limiting cavity 410 is provided in the mounting seat 41, the moving rod 44 penetrates through the limiting cavity 410, and a limiting shaft 4110 perpendicular to the moving rod 44 is provided on the moving rod 44, and the limiting shaft 4110 is slidably inserted into the limiting cavity 410. The limiting cavity 410 and the limiting shaft 4110 are used to limit the sliding stroke of the moving rod 44 along the second direction. In this way, the excessive pressure of the second roller 43 on the strip can be prevented, which affects the normal movement of the strip in the first direction.

[0062] As Figures 2 to 3 As shown, optionally, the continuous detection mechanism 4 further includes a guiding pressure wheel 49 rotatably mounted on the mounting seat 41. The guiding pressure wheel 49 is arranged behind the second roller 43 and is used to limit the jumping of the strip along the second direction. When the strip is normally conveyed backward in the first direction, the guiding pressure wheel 49 is higher than the strip and does not contact the strip. When the strip jumps upward, the guiding pressure wheel limits the jumping of the strip to prevent the strip from jumping too much, and finally ensures that the strip is stably conveyed backward in the first direction.

[0063] Optionally, the sensor 46 is a proximity sensor or a photoelectric sensor. When a proximity sensor is adopted, when the moving rod 44 slides away from the first roller 42 along the second direction to the sensing position, the moving rod 44 approaches or contacts the proximity sensor, so that the proximity sensor generates a sensing signal. When a photoelectric sensor is adopted, when the moving rod 44 slides away from the first roller 42 along the second direction to the sensing position, the moving rod 44 blocks the optical path of the photoelectric sensor or releases the occlusion of the optical path of the photoelectric sensor, so that the photoelectric sensor generates a sensing signal.

[0064] In the embodiments of the present application, other types of detection devices such as a double-sheet detector can also be selected as the subsequent connection detection mechanism 4. The receiving end and the transmitting end of the double-sheet detector are arranged at intervals in the thickness direction of the strip, and the strip passes between the receiving end and the transmitting end of the double-sheet detector. For example, when the traction mechanism 3 traction the strip in the horizontal direction, the receiving end and the transmitting end of the double-sheet detector are located on the upper and lower sides of the strip.

[0065] The double-sheet detector can emit different signals when the subsequent connection section of the strip and the rest of the normal parts of the strip pass through its receiving end and transmitting end, so as to realize the detection and positioning of the abnormal thickness parts on the strip.

[0066] As Figure 1 shown, optionally, the traction mechanism 3 includes a translation drive module 31, a mounting plate 32 and a clamping component 33. Among them, the mounting plate 32 is connected to the movable part of the translation drive module 31, and the clamping component 33 is arranged on the mounting plate 32. The translation drive module 31 is configured to drive the mounting plate 32 to translate in the first direction, so as to drive the clamping component 33 to clamp the free end of the strip from the cutting mechanism and traction the strip away from the cutting mechanism 2.

[0067] The translation drive module 31 can adopt various existing linear drive modules that can drive the mounting plate 32 to translate in the first direction, such as a synchronous belt drive module, a lead screw drive module, etc. The clamping component 33 can adopt various existing structural parts that can clamp and release the free end of the strip, such as jaws driven by a jaw cylinder.

[0068] As Figure 1 shown, optionally, the pressing mechanism 1 includes a first mounting bracket 11, a bearing plate 12, a pressing block 13 and a pressing drive module 14, where: the bearing plate 12 is fixedly installed on the first mounting bracket 11. The pressing block 13 is connected to the movable part of the pressing drive module 14, and the strip passes between the pressing block 13 and the bearing plate 12.

[0069] Before the traction mechanism 3 tractions the strip, the pressing drive module 14 drives the pressing block 13 to move away from the bearing plate 12 to release the strip. Before the cutting mechanism 2 cuts the strip, the pressing drive module 14 drives the pressing block 13 to move towards the bearing plate 12 to press the strip. In this way, the strip can be prevented from retracting after being cut, ensuring that the new free end generated after the strip is cut remains at the cutting mechanism 2, so that the traction mechanism 3 can clamp the free end of the strip from the cutting mechanism 2 each time and perform traction.

[0070] The pressing drive module 14 can adopt various existing linear drive modules that can drive the pressing block 13 to move towards or away from the bearing plate 12, such as a cylinder drive module, an electric cylinder drive module, etc.

[0071] As Figure 1As shown, optionally, the cutting mechanism 2 includes a second mounting bracket 21, a fixed cutter 22, a movable cutter 23, and a cutter driving module 24, where: The fixed cutter 22 is fixedly mounted on the second mounting bracket 21. The movable cutter 23 is connected to the movable part of the cutter driving module 24. The strip passes through between the movable cutter 23 and the fixed cutter 22, and the cutter driving module 24 is configured to drive the movable cutter 23 to move towards the fixed cutter 22 to cut the strip.

[0072] The cutter driving module 24 can adopt various existing linear driving modules that can drive the movable cutter 23 to move towards or away from the fixed cutter 22, such as a cylinder driving module, an electric cylinder driving module, etc.

[0073] The embodiment of the present application also provides a strip preparation method, which can be implemented by the strip preparation device in any of the above embodiments. Combining Figure 6 As shown, the strip preparation method in the embodiment of the present application includes:

[0074] S1. Control the traction mechanism 3 to clamp the free end of the strip 100 from the cutting mechanism 2 and traction the strip.

[0075] S2. When the strip thickness abnormality detection mechanism 4 detects a strip thickness abnormality part, obtain a first length value of the strip between the free end of the strip and the strip thickness abnormality part.

[0076] As Figure 6 shown, this first length value is equal to the distance A between the strip thickness abnormality detection mechanism 4 and the cutting mechanism 2 plus the traction stroke X of the traction mechanism 3 on the strip, which can be denoted as the first length value A + X.

[0077] S3. Compare the obtained first length value A + X with the target length value F of the target strip to be prepared, and make the following processing according to the comparison result.

[0078] Case 1. When the first length value A + X is greater than the target length value F, it means that the strip between the free end of the strip and the strip thickness abnormality part is sufficient to prepare a target strip with the target length value F.

[0079] In this case, first control the traction mechanism 3 to continue to traction the strip 100. When the total length of the strip 100 pulled out of the cutting mechanism 2 is equal to the target length value F, control the cutting mechanism 2 to cut the strip 100, and a target strip with the target length value F can be obtained, and it can be ensured that there is no strip thickness abnormality part on the obtained target strip.

[0080] Subsequently, the control traction mechanism 3 clamps the free end of the strip 100 from the cutting mechanism 2 again and traction the strip 100 until the thickness abnormal part of the strip 100 is pulled out of the cutting mechanism 2, and then controls the cutting mechanism 2 to cut the strip, so as to realize the removal of the thickness abnormal part.

[0081] Case 2: When the first length value A + X is less than or equal to the target length value F, it indicates that the strip between the free end of the strip and the thickness abnormal part of the strip is not enough to prepare a target strip with the target length value F.

[0082] In this case, control the traction mechanism 3 to continue to traction the strip 100. When the total length of the strip pulled out of the cutting mechanism 2 is equal to the sum of the first length value A + X and a predetermined length, control the cutting mechanism 2 to cut the strip 100, where the predetermined length is at least equal to the length of the thickness abnormal part of the strip 100. In this way, it can be ensured that the thickness abnormal part on the strip is completely pulled out of the cutting mechanism 2 before cutting, and finally the removal of the thickness abnormal part is realized.

[0083] The strip preparation method provided by the embodiment of the present application can implement automatic detection and positioning of the thickness abnormal part on the strip, and realizes the removal of the thickness abnormal part, and finally ensures that there is no thickness abnormal part on the prepared target strip.

[0084] Since the new and old busbars are connected by lap welding, the thickness of the connection part is thicker than that of the rest of the busbar. The thickness abnormal part detected by the connection detection mechanism 4 is the connection part, and the thickness abnormal part is detected. Therefore, the strip preparation method in the embodiment of the present application is suitable for implementing the preparation of the busbar. After detecting the thickness abnormal part, control the traction mechanism 3 to pull the thickness abnormal part of the busbar out of the cutting mechanism 2, and then control the cutting mechanism 2 to cut the busbar, so as to realize the removal of the thickness abnormal part and prevent the thickness abnormal part from flowing into the subsequent busbar welding station.

[0085] Since the first length value A + X of the strip between the free end of the strip and the thickness abnormal part of the strip is equal to the distance A between the connection detection mechanism 4 and the cutting mechanism 2 plus the traction stroke X of the traction mechanism 3 on the strip. Therefore, optionally, obtaining the first length value of the strip between the free end of the strip and the thickness abnormal part in step S2 above includes:

[0086] S21. Obtain the traction stroke X of the traction mechanism 3.

[0087] S22. Calculate the sum of the distance A between the connection detection mechanism and the cutting mechanism and the traction stroke X of the traction mechanism to obtain the first length value A + X.

[0088] Among them, the distance A between the continuation detection mechanism 4 and the cutting mechanism 2 is a known fixed value, and the traction stroke X of the strip by the traction mechanism 3 can be obtained from the control end of the traction mechanism 3 (such as the PLC controller that controls the traction mechanism 3 to perform traction).

[0089] Since the thickness abnormal part (such as the continuation part of the bus bar) has a certain length along the first direction. When the detection sensitivity of the continuation detection mechanism 4 is high enough and there is no signal transmission delay, when the starting end of the thickness abnormal part enters the continuation detection mechanism 4, the continuation detection mechanism 4 immediately detects the thickness abnormal part. That is, the detected thickness abnormal part is the position of the starting end of the thickness abnormal part.

[0090] In this case, by comparing the first length value A + X of the strip between the free end of the obtained strip and the thickness abnormal part with the target length value F of the target strip to be prepared, and controlling the traction mechanism 3 and the cutting mechanism 2 to perform relevant actions, it can be ensured that the thickness abnormal part is removed, and there is no thickness abnormal part on the prepared target strip.

[0091] Of course, in the actual preparation process, there may also be situations where the detection sensitivity of the continuation detection mechanism 4 is insufficient and signal transmission is delayed, resulting in a part of the thickness abnormal part having passed through the continuation detection mechanism 4 when the continuation detection mechanism 4 detects the thickness abnormal part. That is, the position of the thickness abnormal part detected by the continuation detection mechanism 4 is not the position of the starting end of the thickness abnormal part, but the middle or even the end position of the thickness abnormal part. In this case, if the first length value A + X of the strip between the free end of the obtained strip and the thickness abnormal part is still compared with the target length value F of the target strip to be prepared, and the traction mechanism 3 and the cutting mechanism 2 are controlled to perform relevant actions, it may not be possible to ensure that the thickness abnormal part is completely removed, and finally there will be a small part of the thickness abnormal part on the prepared target strip.

[0092] To solve the above problems, the embodiment of the present application also provides another strip preparation method, which can also be implemented by the strip preparation device in any of the above embodiments. Combining Figure 6 As shown, another strip preparation method in the embodiment of the present application includes:

[0093] S10. Control the traction mechanism 3 to clamp the free end of the strip 100 from the cutting mechanism 2 and traction the strip.

[0094] S20. When the continuation detection mechanism detects the thickness abnormal part of the strip 100, obtain the first length value of the strip between the free end of the strip and the thickness abnormal part of the strip.

[0095] As Figure 6As shown in the figure, the first length value is equal to the distance A between the continuation detection mechanism 4 and the cutting mechanism 2 plus the traction stroke X of the strip by the traction mechanism 3, denoted as the first length value A + X.

[0096] S30. Subtract the safety value P from the first length value A + X to obtain a corrected first length value, denoted as the corrected first length value A + X - P.

[0097] S40. Compare the obtained corrected first length value A + X - P with the target length value F of the target strip to be prepared.

[0098] According to the comparison result, the following processing is performed:

[0099] Case 1. When the corrected first length value A + X - P is greater than the target length value F, it means that even if the part of the abnormal thickness part of the strip passing through the continuation detection mechanism 4 is subtracted, the strip between the free end of the strip and the abnormal thickness part of the strip is sufficient to prepare a target strip with the target length value F.

[0100] In this case, first control the traction mechanism 3 to continue to traction the strip 100. When the total length of the strip drawn out of the cutting mechanism 2 is equal to the target length value F, control the cutting mechanism 2 to cut the strip 100, and a target strip with the target length value F can be obtained, and it can be ensured that there is no abnormal thickness part on the obtained target strip.

[0101] Subsequently, control the traction mechanism 3 to clamp the free end of the strip 100 from the cutting mechanism 2 again and traction the strip 100 until the abnormal thickness part of the strip 100 is drawn out of the cutting mechanism 2, and control the cutting mechanism 2 to cut the strip, so as to realize the removal of the abnormal thickness part.

[0102] Case 2. When the corrected first length value A + X - P is less than or equal to the target length value F, it means that the strip between the free end of the strip and the abnormal thickness part of the strip may not be sufficient to prepare a target strip with the target length value.

[0103] In this case, control the traction mechanism 3 to continue to traction the strip 100. When the total length of the strip drawn out of the cutting mechanism 2 is equal to the sum of the first length value A + X and a predetermined length, control the cutting mechanism 2 to cut the strip 100, where the predetermined length is at least equal to the length of the abnormal thickness part. In this way, it can be ensured that all the abnormal thickness parts on the strip are pulled out of the cutting mechanism 2 before cutting, and finally the removal of the abnormal thickness part is realized.

[0104] By correcting the first length value of the strip between the free end of the obtained strip and the thickness anomaly part, comparing the corrected first length value with the target length value of the target strip to be prepared, and controlling the traction mechanism 3 and the cutting mechanism 4 to perform relevant actions, it can be further ensured that the thickness anomaly part is completely removed, and finally it is ensured that there is no thickness anomaly part on the target strip.

[0105] Optionally, the safety value P in the embodiment of the present application is set to be greater than the length of the thickness anomaly part. With such a setting, even if the continuity detection mechanism 4 detects the thickness anomaly part and most or all of the thickness anomaly part has passed through the continuity detection mechanism, it can still be ensured that the embodiment of the present application can achieve the removal of the thickness anomaly part.

[0106] For example, in the scenario of bus bar preparation, the length of the continuity part on the bus bar is generally 20 mm - 50 mm, and the safety value P can be set to 30 - 70 mm. During actual production, the setting of the safety value mainly depends on the actual length of the continuity part on the bus bar.

[0107] Similar to the strip preparation method in the previous embodiment, obtaining the first length value of the strip between the free end of the strip and the thickness anomaly part of the strip in step S20 above includes:

[0108] S201. Obtain the traction stroke X of the traction mechanism 3.

[0109] S202. Calculate the sum of the distance A between the continuity detection mechanism and the cutting mechanism and the traction stroke X of the traction mechanism to obtain the first length value A + X.

[0110] Among them, the distance A between the continuity detection mechanism 4 and the cutting mechanism 2 is a known fixed value, and the traction stroke X of the traction mechanism 3 on the strip can be obtained from the control end of the traction mechanism 3 (such as the PLC controller that controls the traction mechanism 3 to perform traction).

[0111] The above has described the present application in sufficient detail with a certain particularity. Those of ordinary skill in the art should understand that the description in the embodiment is only exemplary, and all changes made without departing from the true spirit and scope of the present application should belong to the protection scope of the present application. The scope of protection required by the present application is defined by the claims described, rather than by the above description in the embodiment.

Claims

1. A strip preparation device, characterized in that, The strip preparation device includes a pressing mechanism, a cutting mechanism, and a traction mechanism arranged in sequence along a first direction. The strip preparation device further includes a continuity detection mechanism arranged in front of the pressing mechanism or between the pressing mechanism and the cutting mechanism, where: The traction mechanism is configured to clamp the free end of the strip from the cutting mechanism and traction the strip passing through the continuity detection mechanism, the pressing mechanism, and the cutting mechanism along the first direction away from the cutting mechanism; The continuity detection mechanism is configured to identify abnormal thickness parts of the strip; The traction mechanism is further configured to traction the abnormal thickness part of the strip out of the cutting mechanism, so that the abnormal thickness part of the strip is located outside the cutting mechanism; The cutting mechanism is configured to cut the strip; The pressing mechanism is configured to press the strip when the cutting mechanism cuts the strip.

2. The strip preparation device according to claim 1, wherein, The continuity detection mechanism includes a mounting seat, a first roller, a second roller, a moving rod, an elastic member, and a sensor, where: The first roller is rotatably mounted on the mounting seat; The moving rod is slidably mounted on the mounting seat along a second direction, and the elastic member is arranged between the moving rod and the mounting seat, where the second direction is the thickness direction of the strip; The second roller is rotatably mounted on the first end of the moving rod, and the strip passes between the second roller and the first roller along the first direction. The second roller elastically presses the strip against the first roller under the pushing of the elastic member; The sensor is mounted on the mounting seat. When the moving rod slides away from the first roller along the second direction to an induction position, the sensor is triggered to generate an induction signal.

3. The strip preparation device according to claim 2, characterized in that, The mounting seat includes a first seat body and a second seat body, where: One of the first seat body and the second seat body is provided with a waist-shaped hole extending along the second direction, and the other of the first seat body and the second seat body is provided with a connection screw hole matching the waist-shaped hole. The second seat body is connected to the first seat body through a bolt passing through the waist-shaped hole and the connection screw hole in a position-adjustable manner; The moving rod slidably passes through the second seat body, and the elastic member is arranged between the moving rod and the second seat body.

4. The strip preparation device according to claim 2, characterized in that, The second end of the moving rod extends out of the mounting seat, the sensor is mounted on the mounting seat and close to the second end of the moving rod. When the moving rod slides to the induction position, the second end of the moving rod triggers the sensor; or, a triggering member is arranged on the moving rod, the sensor is mounted on the mounting seat and close to the triggering member. When the moving rod slides to the induction position, the triggering member triggers the sensor.

5. The strip preparation device according to claim 2, characterized in that, The sensor is a proximity sensor or a photoelectric sensor.

6. The strip preparation device according to claim 1, characterized in that The continuity detection mechanism is a double-sheet detector. The receiving end and the transmitting end of the double-sheet detector are arranged at intervals along the thickness direction of the strip, and the strip passes between the receiving end and the transmitting end of the double-sheet detector.

7. The strip preparation device according to claim 1, wherein, The traction mechanism includes a translation driving module, a mounting plate, and a clamping component. Among them, the mounting plate is connected to the moving part of the translation driving module, and the clamping component is arranged on the mounting plate; The translation driving module is configured to drive the mounting plate to translate along the first direction, so as to drive the clamping component to clamp the free end of the strip from the cutting mechanism and traction the strip away from the cutting mechanism.

8. The strip preparation device according to claim 1, characterized in that, The pressing mechanism includes a first mounting bracket, a bearing plate, a pressing block, and a pressing driving module, where: The bearing plate is fixedly installed on the first mounting bracket; The pressing block is connected to the moving part of the pressing driving module; The strip passes through between the pressing block and the bearing plate, and the pressing driving module is configured to drive the pressing block to move towards or away from the bearing plate, so as to press or release the strip.

9. The strip preparation device according to claim 1, characterized in that, The cutting mechanism includes a second mounting bracket, a fixed cutter, a movable cutter, and a cutter driving module, where: The fixed cutter is fixedly installed on the second mounting bracket; The movable cutter is connected to the moving part of the cutter driving module; The strip passes through between the movable cutter and the fixed cutter, and the cutter driving module is configured to drive the movable cutter to move towards the fixed cutter to cut the strip.

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