Clamping device and series welding machine

Abstract

The utility model relates to a clamping device and a series welding machine. The clamping device comprises a base; the clamping assembly is arranged on the base and comprises a first clamping piece and a second clamping piece, the first clamping piece is provided with a plurality of first clamping jaws, the second clamping piece is provided with a plurality of second clamping jaws, and the first clamping jaws and the second clamping jaws are alternately arranged in pairs in the length direction of the base; the transmission assembly comprises a rotating seat, a first transmission part and a second transmission part, the first transmission part and the second transmission part are installed on the rotating seat, the first transmission part is in rolling fit with the first clamping part, and the second transmission part is in rolling fit with the first clamping part. When the rotating seat is controlled to drive the first transmission part and the second transmission part to rotate, the first transmission part and the second transmission part jointly drive the paired first clamping jaw and second clamping jaw to slide in the length direction of the base in an opposite or opposite mode, so that the paired first clamping jaw and second clamping jaw are closed or opened. According to the clamping device and the series welding machine, abrasion can be reduced, and the service life is prolonged.

Description

Technical Field

[0001] This application relates to the field of solar cell processing equipment technology, and in particular to a clamping device and a string welding machine. Background Technology

[0002] In the manufacturing process of solar cell modules, solar cells need to be strung together using solder ribbons, a process known as string welding. Currently, before string welding, a clamping device clamps the solder ribbon and pulls it from the ribbon reel. Then, a cutting device cuts the long strip of solder ribbon into shorter strips, which are then used to weld the solar cells together. During the operation of traditional clamping devices, the internal components of the device experience mostly dry friction. As the clamping device operates at high speed, the internal components suffer severe wear, resulting in a short service life. Utility Model Content

[0003] Therefore, it is necessary to provide a clamping device and a string welding machine that can reduce wear and extend service life in order to address the above problems.

[0004] A clamping device, the clamping device comprising:

[0005] Base;

[0006] A clamping assembly is disposed on the base and includes a first clamping member and a second clamping member. The first clamping member has a plurality of first jaws, and the second clamping member has a plurality of second jaws. The first jaws and the second jaws are arranged alternately and in pairs along the length direction of the base.

[0007] The transmission assembly includes a rotating base, a first transmission component, and a second transmission component. The first transmission component and the second transmission component are mounted on the rotating base. The first transmission component is in rolling engagement with the first clamping component, and the second transmission component is in rolling engagement with the first clamping component.

[0008] When the rotating seat is controlled to drive the first transmission member and the second transmission member to rotate, the first transmission member and the second transmission member jointly drive the paired first gripper and the second gripper to slide towards or away from each other along the length direction of the base, so that the paired first gripper and the second gripper close or open.

[0009] In some embodiments, the first clamping member has a first working surface, the second clamping member has a second working surface, and the first working surface and the second working surface are spaced apart along the width direction of the base;

[0010] The first transmission member and the second transmission member are located between the first working surface and the second working surface, and the first transmission member is in rolling engagement with the first working surface, and the second transmission member is in rolling engagement with the second working surface.

[0011] In some embodiments, both the first transmission component and the second transmission component are needle roller bearings.

[0012] In some embodiments, the clamping device further includes an opening and closing drive assembly, which is mounted on the base and throttle connected to the rotating seat. The opening and closing drive assembly is used to drive the rotating seat to rotate so that the pair of first grippers and second grippers close or open.

[0013] In some embodiments, the opening and closing drive assembly includes an opening and closing drive cylinder, a floating joint, a connecting block, and a rotary joint; the opening and closing drive cylinder has an opening and closing drive telescopic rod, and the opening and closing drive telescopic rod, the floating joint, the connecting block, the rotary joint, and the rotating seat are sequentially connected in a transmission manner.

[0014] In some embodiments, the opening / closing drive cylinder is a multiplier cylinder.

[0015] In some embodiments, the rotating seat has an oblong hole that extends along the arrangement direction of the first transmission member and the second transmission member. The rotary joint includes a joint body and a rotating shaft. The rotating shaft passes through the oblong hole and is rotatably connected to the rotating seat and the joint body.

[0016] In some embodiments, the clamping device further includes a micro-opening drive assembly mounted on the base; under the action of the micro-opening drive assembly, the rotating seat drives the first transmission member and the second transmission member to rotate, and drives the first transmission member and the second transmission member to jointly drive the paired first gripper and the second gripper to slide back and forth along the length direction of the base by a small distance, so as to make the paired first clamping member and the second clamping member slightly open.

[0017] In some embodiments, the micro-opening drive assembly includes a micro-opening drive cylinder and a push block. The micro-opening drive cylinder is throttle-connected to the push block and is used to drive the push block to push against the rotating seat.

[0018] In some embodiments, the rotating base has a first side and a second side disposed opposite to each other along the length direction of the base;

[0019] The clamping device further includes an opening and closing drive assembly, which drives the rotating seat to rotate so that the paired first and second grippers close or open. The opening and closing drive assembly includes an opening and closing drive cylinder, a floating joint, a connecting block, and a rotary joint. The opening and closing drive cylinder has an opening and closing drive telescopic rod. The opening and closing drive telescopic rod, the floating joint, the connecting block, the rotary joint, and the rotating seat are sequentially connected in a transmission manner. The opening and closing drive cylinder, the floating joint, the connecting block, and the rotary joint are arranged along the length direction of the base and located on the first side. The micro-opening drive cylinder and the push block are arranged along the length direction of the base and located on the second side.

[0020] In some embodiments, the clamping device further includes a guide assembly, which includes a guide rail, a first slider, and a second slider. The guide rail extends along the length of the base. The first slider and the second slider are slidably mounted on the guide rail. The first clamping member is mounted on the first slider, and the second clamping member is mounted on the second slider.

[0021] In some embodiments, the transmission assembly further includes an elastic element abutting between the base and the rotating seat, the elastic element being used to provide an elastic force that drives the rotating seat to rotate and causes the pair of first and second grippers to slide towards each other.

[0022] A string welding machine includes a clamping device as described in any of the above embodiments.

[0023] Compared with the prior art, this application has the following beneficial effects:

[0024] In the aforementioned clamping device and string welding machine, the first transmission component and the first clamping component roll into each other, resulting in rolling friction between them. The second transmission component and the second clamping component roll into each other, resulting in rolling friction between them. This design can reduce wear during transmission and extend the service life of the clamping device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the clamping device in one embodiment of this application;

[0026] Figure 2 for Figure 1 The front view of the clamping device shown;

[0027] Figure 3 for Figure 1 A schematic diagram of the clamping device after removing the cover plate;

[0028] Figure 4 for Figure 2 The clamping device shown is a cross-sectional view taken along the AA direction after the cover plate has been removed.

[0029] Figure 5 for Figure 4 An enlarged schematic diagram of a portion of the clamping device B shown;

[0030] Figure 6 for Figure 3 The diagram shows the structure of the clamping device after removing the first clamping member and the second drive seat.

[0031] Icon labels:

[0032] 100. Clamping device;

[0033] 10. Base; 20. Clamping assembly; 30. Transmission assembly; 40. Opening and closing drive assembly; 50. Micro-opening drive assembly; 60. Guide assembly; 70. Cover plate;

[0034] 11. Mounting slot;

[0035] 21. First clamping member; 211. First drive seat; 2111. First working surface; 212. First clamping base; 213. First gripper; 22. Second clamping member; 221. Second drive seat; 2211. Second working surface; 222. Second clamping base; 223. Second gripper;

[0036] 31. Rotating seat; 311. Waist-shaped hole; 32. First transmission component; 33. Second transmission component; 34. Fixed bearing; 35. First rotating shaft; 36. Second rotating shaft; 37. Third rotating shaft; 38. Elastic component;

[0037] 41. Opening / closing drive cylinder; 42. Floating joint; 43. Connecting block; 44. Rotary joint; 441. Joint body; 442. Rotating shaft;

[0038] 51. Micro-opening drive cylinder; 52. Push block;

[0039] 61. Guide rail; 62. First slider; 63. Second slider;

[0040] X, length direction; X1, first direction; X2, second direction; Y, width direction; Z, thickness direction; W1, first circumferential direction; W2, second circumferential direction. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are 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, and therefore should not be construed as a limitation of this application.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] In the manufacturing process of solar cell modules, solar cells need to be strung together using solder ribbons, a process known as string welding. Currently, before string welding, a clamping device clamps the solder ribbon and pulls it from the ribbon reel. Then, a cutting device cuts the long strip of solder ribbon into shorter strips, which are then used to weld the solar cells together. During the operation of traditional clamping devices, the internal components experience mostly dry friction. As the clamping device operates at high speed, the internal components wear out significantly, resulting in a short lifespan. Under these circumstances, on-site personnel need to frequently replace internal components, increasing the manufacturing cost of solar cell modules, wasting production time, and slowing down the production cycle.

[0048] Please see Figures 1 to 6 To alleviate the aforementioned problems, this application provides a clamping device 100, which includes a base 10, a clamping assembly 20, and a transmission assembly 30. The clamping assembly 20 is disposed on the base 10 and includes a first clamping member 21 and a second clamping member 22. The first clamping member 21 has a plurality of first grippers 213, and the second clamping member 22 has a plurality of second grippers 223. The first grippers 213 and second grippers 223 are alternately and paired along the length direction X of the base 10. The transmission assembly 30 includes a rotating seat 31, a first transmission member 32, and a second transmission member 33. The first transmission member 32 and the second transmission member 33 are mounted on the rotating seat 31. The first transmission member 32 and the first clamping member 21 are in rolling engagement, and the second transmission member 33 and the first clamping member 21 are in rolling engagement. When the rotating seat 31 is controlled to drive the first transmission member 32 and the second transmission member 33 to rotate, the first transmission member 32 and the second transmission member 33 jointly drive the pair of first grippers 213 and second grippers 223 to slide towards or away from each other along the length direction X of the base 10, so that the pair of first grippers 213 and second grippers 223 close or open.

[0049] As an example, the base 10 has a mounting groove 11 extending along the length direction X of the base 10. The portion of the first clamping member 21 excluding the first gripper 213, the portion of the second clamping member 22 excluding the second gripper 223, and the transmission assembly 30 are all mounted in the mounting groove 11. To reduce external interference, the clamping device 100 also includes a cover plate 70, which covers at least a portion of the opening of the mounting groove 11 to shield the first clamping member 21, the second clamping member 22, and the transmission assembly 30.

[0050] As an example, the first clamping member 21 includes a first drive seat 211, a first clamping seat 212, and a plurality of first clamping claws 213. The first clamping seat 212 is connected to the first drive seat 211, and all the first clamping claws 213 are mounted on the first clamping seat 212. The second clamping member 22 includes a second drive seat 221, a second clamping seat 222, and a plurality of second clamping claws 223. The second clamping seat 222 is connected to the second drive seat 221, and all the second clamping claws 223 are mounted on the second clamping seat 222. The first drive seat 211 is sleeved on the second drive seat 221. The first clamping seat 212 and the second clamping seat 222 are stacked along the width direction Y of the base 10. The first clamping claws 213 and the second clamping claws 223 are alternately and paired along the length direction X of the base 10, and each pair of first clamping claws 213 and second clamping claws 223 are used in conjunction. With this design, the first clamping member 21 and the second clamping member 22 are arranged in a compact manner, which helps to reduce the space occupied by the clamping device 100.

[0051] As an example, the transmission assembly 30 also includes a fixed bearing 34 and a first rotating shaft 35. The fixed bearing 34 is mounted on the base 10, and the first rotating shaft 35 is rotatably inserted through the central hole of the fixed bearing 34 and connected to the rotating seat 31, so that the rotating seat 31 can rotate relative to the fixed bearing 34 and the base 10 about the first rotating shaft 35.

[0052] As an example, the transmission assembly 30 also includes a second rotating shaft 36 and a third rotating shaft 37. The first rotating shaft 35, the second rotating shaft 36, and the third rotating shaft 37 all extend along the thickness direction Z of the base 10. The first transmission member 32 and the second transmission member 33 are both needle roller bearings. The second rotating shaft 36 passes through the central holes of the rotating seat 31 and the first transmission member 32, and rolls with the first drive seat 211. The third rotating shaft 37 passes through the central holes of the rotating seat 31 and the second transmission member 33, and rolls with the second drive seat 221. Since both the first transmission member 32 and the second transmission member 33 are needle roller bearings, and needle roller bearings have a low coefficient of friction, they can effectively reduce wear between the first transmission member 32 and the first clamping member 21, and between the second transmission member 33 and the second clamping member 22 during use. Furthermore, the compact structure and small outer diameter of the needle roller bearings reduce the overall size of the clamping device 100, saving more space.

[0053] Of course, the specific structure of the first transmission member 32 and the second transmission member 33 is not limited to the one described above. The first transmission member 32 and the second transmission member 33 can also be in other forms. For example, the first transmission member 32 and the second transmission member 33 can both be roller structures of the same size as the needle roller bearing described above.

[0054] As an example, the first transmission member 32 and the second transmission member 33 are symmetrically arranged on opposite sides of the central axis of the first rotating shaft 35, and respectively roll-fit with the first drive seat 211 and the second drive seat 221. In this embodiment, under the combined transmission action of the first transmission member 32 and the second transmission member 33, the paired first gripper 213 and second gripper 223 slide the same distance. Of course, in other embodiments, the first transmission member 32 and the second transmission member 33 may also be asymmetrically arranged on opposite sides of the central axis of the first rotating shaft 35.

[0055] In this application, the clamping device 100 has a closing action and an opening action. The specific process of the clamping device 100 performing the closing action is as follows: When the rotating seat 31 is controlled to rotate around the central axis of the first rotating shaft 35 along the first circumferential direction W1, the first transmission member 32 and the second transmission member 33 roll relative to the first drive seat 211 and the second drive seat 221, respectively. Since the first transmission member 32 and the second transmission member 33 are located on opposite sides of the central axis of the first rotating shaft 35, the rolling directions of the positions where the first transmission member 32 and the second transmission member 33 contact the first drive seat 211 and the second drive seat 221 are opposite, thereby causing the first transmission member 32 to drive the first clamping member 21 to slide along the first direction X1, and the second transmission member 33 to drive the second clamping member 22 to slide along the second direction X2, which is opposite to the first direction X1, so that the paired first gripper 213 and second gripper 223 can slide towards each other. It can be understood that the first direction X1 and the second direction X2 are two sub-directions of the length direction X. When the pair of first jaws 213 and second jaws 223 move toward each other, the distance between the pair of first jaws 213 and second jaws 223 gradually decreases until the pair of first jaws 213 and second jaws 223 close and clamp the welding strip.

[0056] by Figure 5 When the clamping device 100 is in the state where the rotating seat 31 rotates clockwise (i.e., in the first circumferential direction W1), the first transmission member 32 drives the first clamping member 21 to move to the left (i.e., in the first direction X1), and the second transmission member 33 drives the second clamping member 22 to move to the right (i.e., in the second direction X2), so that the paired first jaws 213 and second jaws 223 move towards each other until they are closed.

[0057] The specific process of the clamping device 100 performing the opening action is as follows: When the rotating seat 31 is controlled to rotate around the central axis of the first rotating shaft 35 along the second circumferential direction W2, which is opposite to the first circumferential direction W1, the first transmission member 32 drives the first clamping member 21 to slide along the second direction X2, and the second transmission member 33 drives the second clamping member 22 to slide along the first direction X1, so that the paired first jaws 213 and second jaws 223 can slide in opposite directions. When the paired first jaws 213 and second jaws 223 move in opposite directions, the distance between the paired first jaws 213 and second jaws 223 gradually increases until the paired first jaws 213 and second jaws 223 open.

[0058] by Figure 5 When the clamping device 100 is in the state where the rotating seat 31 rotates counterclockwise (i.e., in the second circumferential direction W2), the first transmission member 32 drives the first clamping member 21 to move to the right (i.e., in the second direction X2), and the second transmission member 33 drives the second clamping member 22 to move to the left (i.e., in the first direction X1), so that the paired first jaws 213 and second jaws 223 move back to back until they open.

[0059] It is worth mentioning that, in this application, when the clamping device 100 performs the closing action, the pair of first jaws 213 and second jaws 223 close and are used to clamp the welding strip, and when the clamping device 100 performs the opening action, the pair of first jaws 213 and second jaws 223 open and are used to prepare for the next clamping of the welding strip.

[0060] In this application, the clamping assembly 20 cooperates with the transmission assembly 30 to close or open the paired first gripper 213 and second gripper 223, so as to grasp and stretch the welding strip. The first transmission member 32 and the first clamping member 21 are in rolling engagement, creating rolling friction between them. Similarly, the second transmission member 33 and the second clamping member 22 are in rolling engagement, creating rolling friction between them. This design reduces wear during transmission and extends the service life of the clamping device 100. In this case, on-site personnel do not need to frequently replace components, reducing the manufacturing cost of solar cell modules, saving production time, and increasing production cycle time.

[0061] In some embodiments, the first clamping member 21 has a first working surface 2111, and the second clamping member 22 has a second working surface 2211. The first working surface 2111 and the second working surface 2211 are spaced apart along the width direction Y of the base 10. The first transmission member 32 and the second transmission member 33 are located between the first working surface 2111 and the second working surface 2211, and the first transmission member 32 is in rolling engagement with the first working surface 2111, and the second transmission member 33 is in rolling engagement with the second working surface 2211.

[0062] Specifically, both the first working surface 2111 of the first clamping member 21 and the second working surface 2211 of the second clamping member 22 are arc-shaped concave surfaces. As an example, the first working surface 2111 is located on the first drive seat 211 of the first clamping member 21, and the second working surface 2211 is located on the second drive seat 221 of the second clamping member 22. The first transmission member 32 and the second transmission member 33 are in rolling engagement with the first working surface 2111 and the second working surface 2211, respectively.

[0063] In this application, the clamping assembly 20 cooperates with the transmission assembly 30 to close or open the paired first gripper 213 and second gripper 223, so as to grasp and stretch the welding strip. The first transmission member 32 rolls with the first working surface 2111, so that the first transmission member 32 and the first clamping member 21 form rolling friction. The second transmission member 33 rolls with the second working surface 2211, so that the second transmission member 33 and the second clamping member 22 form rolling friction. This design can reduce wear during the transmission process and extend the service life of the clamping device 100.

[0064] Please see Figure 3 and Figure 5 In some embodiments, the clamping device 100 further includes an opening / closing drive assembly 40, which is mounted on the base 10 and connected to the rotating seat 31. The opening / closing drive assembly 40 drives the rotating seat 31 to rotate, thereby closing or opening the paired first gripper 213 and second gripper 223. The inclusion of the opening / closing drive assembly 40 reduces manual intervention, and the clamping device 100 can automatically switch between closing and opening actions.

[0065] In some embodiments, the opening and closing drive assembly 40 includes an opening and closing drive cylinder 41, a floating joint 42, a connecting block 43, and a rotary joint 44; the opening and closing drive cylinder 41 has an opening and closing drive telescopic rod, and the opening and closing drive telescopic rod, the floating joint 42, the connecting block 43, the rotary joint 44, and the rotating seat 31 are sequentially connected in a transmission manner.

[0066] In actual operation, the opening and closing drive telescopic rod extends, driving the floating joint 42, connecting block 43 and rotary joint 44 to move, which in turn drives the rotating seat 31 to rotate along the first circumference W1, causing the paired first gripper 213 and second gripper 223 to move towards each other until they are closed; the opening and closing drive telescopic rod shortens, driving the floating joint 42, connecting block 43 and rotary joint 44 to move, which in turn drives the rotating seat 31 to rotate along the second circumference W2, causing the paired first gripper 213 and second gripper 223 to move away from each other until they are open.

[0067] In this embodiment, a single opening and closing drive cylinder 41 drives the rotating seat 31 to rotate along the first circumferential direction W1 or the second circumferential direction W2, which is simple in structure and easy to operate. The design of the floating joint 42, the connecting block 43 and the rotary joint 44 allows the opening and closing drive telescopic rod to have a certain offset and angle adjustment, ensuring that the opening and closing drive cylinder 41 can drive the rotating seat 31 to rotate normally, and also helps to extend the service life of the opening and closing drive cylinder 41.

[0068] In some embodiments, the rotating base 31 has a first side arranged along the length direction X of the base 10, and the opening and closing drive cylinder 41, floating joint 42, connecting block 43 and rotary joint 44 are arranged along the length direction X of the base 10 and located on the first side. This design helps to reduce the width dimension of the clamping device 100.

[0069] In actual use, the clamping device 100 moves along its width direction Y and approaches the location of the welding strip to clamp it. Traditional clamping devices 100 have a large width, resulting in an increased travel distance and slower production cycle time. In this application, the opening / closing drive cylinder 41, floating joint 42, connecting block 43, and rotary joint 44 are arranged along the length direction X of the base 10, optimizing the width of the clamping device 100 and making it smaller. This design helps reduce the travel distance of the clamping device 100 and improves the production cycle time.

[0070] In some embodiments, the opening / closing drive cylinder 41 is a multiplier cylinder. For example, the opening / closing drive cylinder 41 is a 10-multiplier cylinder. The multiplier cylinder has a compact length dimension, and the multiple stacked pistons are simultaneously subjected to force, which can multiply the output force of the multiplier cylinder, achieving high-output operation within a short stroke. In this case, only one multiplier cylinder is needed to complete the closing or opening of the paired first gripper 213 and second gripper 223, making the clamping device 100 operate more reliably. Furthermore, due to the use of a multiplier cylinder, the driving force of the multiplier cylinder is large, and while ensuring the closing or opening of the paired first gripper 213 and second gripper 223, the lever arm length between the multiplier cylinder and the first clamping member 21, and between the multiplier cylinder and the second clamping member 22, can be appropriately shortened. It is understood that the rotating seat 31 forms the lever arm between the multiplier cylinder and the first clamping member 21, and between the multiplier cylinder and the second clamping member 22. In this case, the length of the rotating seat 31 is shortened. The length direction X of the rotating seat 31 is approximately the width direction Y of the base 10. If the length of the rotating seat 31 is shortened, the space occupied in the width direction Y of the base 10 will be reduced, and the width dimension of the clamping device 100 will also be reduced accordingly.

[0071] In some embodiments, the rotating seat 31 has an oblong hole 311 extending along the arrangement direction of the first transmission member 32 and the second transmission member 33. The rotary joint 44 includes a joint body 441 and a rotating shaft 442. The rotating shaft 442 passes through the oblong hole 311 and is rotatably connected to the rotating seat 31 and the joint body 441.

[0072] Specifically, the rotary joint 44 can be a Y-type joint.

[0073] When the paired first gripper 213 and second gripper 223 are open, the rotating seat 31 extends along the width direction Y of the base 10. At this time, the arrangement direction of the first transmission member 32 and the second transmission member 33 is consistent with the width direction Y of the base 10. When the paired first gripper 213 and second gripper 223 are closed, the extension direction of the rotating seat 31 is set at an acute angle to the width direction Y of the base 10.

[0074] The oblong hole 311 extends along the arrangement direction of the first transmission member 32 and the second transmission member 33, and thus has a certain length in this direction. During actual operation, the rotary joint 44 requires a certain degree of offset and angle adjustment. The design of the oblong hole 311 reduces the possibility of the rotating shaft 442 abutting against the wall of the oblong hole 311 and getting stuck during the offset and angle adjustment process of the rotary joint 44, ensuring the normal operation of the clamping device 100.

[0075] Please continue reading Figure 3 and Figure 5 In some embodiments, the clamping device 100 further includes a micro-opening drive assembly 50, which is mounted on the base 10. Under the action of the micro-opening drive assembly 50, the rotating seat 31 drives the first transmission member 32 and the second transmission member 33 to rotate, and drives the first transmission member 32 and the second transmission member 33 to jointly drive the paired first gripper 213 and the second gripper 223 to slide back and forth along the length direction X of the base 10 by a small distance, so that the paired first clamping member 21 and the second clamping member 22 are slightly opened.

[0076] The clamping device 100 has a micro-opening action, and the clamping device 100 completes a cycle of closing action, micro-opening action and opening action when it is running.

[0077] When the clamping device 100 performs a micro-opening action, the distance between the paired first jaw 213 and second jaw 223 is L0; when the clamping device 100 performs a closing action, the distance between the paired first jaw 213 and second jaw 223 is L1; when the clamping device 100 performs an opening action, the distance between the paired first jaw 213 and second jaw 223 is L2, where L1 < L0 < L2.

[0078] The specific process of the clamping device 100 performing the micro-opening action is as follows: the micro-opening drive assembly 50 drives the rotating seat 31 to rotate a small angle along the second circumferential direction W2, and then the first transmission member 32 drives the first clamping member 21 to slide a small distance along the second direction X2, and the second transmission member 33 drives the second clamping member 22 to slide a small distance along the first direction X1, so that the paired first jaw 213 and second jaw 223 can slide back to back and slightly open.

[0079] It is worth mentioning that, in this application, when the clamping device 100 performs the micro-opening action, the paired first jaws 213 and second jaws 223 slightly open and are used to release the solder strip, so that the solder strip can fall between the paired first jaws 213 and second jaws 223. At this time, the gap between the paired first jaws 213 and second jaws 223 is very small and can guide the solder strip to fall, so as to facilitate the placement of the clamped solder strip within a precise and reliable range.

[0080] In some embodiments, the micro-opening drive assembly 50 includes a micro-opening drive cylinder 51 and a pusher block 52. The micro-opening drive cylinder 51 is connected to the pusher block 52 in a transmission manner and is used to drive the pusher block 52 to push against the rotating seat 31.

[0081] The micro-opening drive cylinder 51 has a micro-opening drive telescopic rod. When the clamping device 100 performs the micro-opening action, the micro-opening drive telescopic rod extends, driving the push block 52 to move and abut against the rotating seat 31. Then, the push block 52 pushes the rotating seat 31 to rotate at a small angle along the second circumferential direction W2, causing the paired first gripper 213 and second gripper 223 to move in opposite directions and slightly open. It can be understood that the longer the micro-opening drive telescopic rod extends, the larger the gap between the paired first gripper 213 and second gripper 223.

[0082] In this embodiment, the micro-opening drive cylinder 51 and push block 52 drive the rotating seat 31 to rotate along the second circumferential direction W2, thereby achieving a simple and reliable micro-opening operation for the paired first gripper 213 and second gripper 223, which helps reduce the manufacturing cost of the clamping device 100. It is worth mentioning that the opening and closing drive telescopic rod of the opening and closing drive cylinder 41 has only two positions: extended and retracted. The opening and closing drive telescopic rod cannot stop midway during extension or retraction. When the paired first gripper 213 and second gripper 223 are to be switched to micro-opening, the opening and closing drive cylinder 41 is in a mid-leakage state, with both the air inlet and outlet chambers of the opening and closing drive cylinder 41 connected to the atmosphere. The opening and closing drive telescopic rod can easily switch to the extended or retracted state. Simultaneously, the micro-opening drive telescopic rod extends and pushes the rotating seat 31 to rotate. Because a rotary joint 44 and a floating joint 42 are provided between the rotating seat 31 and the opening and closing drive telescopic rod, the rotary joint 44 and the floating joint 42 cause the opening and closing drive telescopic rod to have a certain angle of offset. Therefore, even if the opening and closing drive telescopic rod does not extend or retract, it can ensure that the rotating seat 31 can rotate at a small angle along the second circumference W2. Moreover, the pushing effect of the rotating seat 31 on the opening and closing drive telescopic rod is small during the small angle rotation, thus avoiding the opening and closing drive telescopic rod from breaking.

[0083] In some embodiments, the rotating base 31 has a second side disposed along the length direction X of the base 10, the second side being disposed opposite to the first side, and the micro-opening drive cylinder 51 and the push block 52 being arranged along the length direction X of the base 10 and located on the second side. This design helps to reduce the width dimension of the clamping device 100 and makes it less likely that the opening and closing drive assembly 40 and the micro-opening drive assembly will interfere with each other during installation and operation.

[0084] Please see Figures 3 to 5 In some embodiments, the transmission assembly 30 further includes an elastic element 38, which abuts against the base 10 and the rotating seat 31, and the elastic element 38 is used to provide an elastic force that drives the rotating seat 31 to rotate and drives the pair of first grippers 213 and second grippers 223 to slide towards each other.

[0085] When neither the opening / closing drive cylinder 41 nor the micro-opening drive cylinder 51 is ventilated, the elastic force applied by the elastic element 38 causes the paired first gripper 213 and second gripper 223 to close, thereby reducing the space occupied by the paired first gripper 213 and second gripper 223 in the length direction X of the base 10. Furthermore, when the micro-opening drive cylinder 51 operates, the micro-opening drive assembly 50 drives the rotating seat 31 to rotate a small angle along the second circumferential direction W2. During this process, the elastic force applied by the elastic element 38 pulls the rotating seat 31 back, making the opening amplitude of the paired first gripper 213 and second gripper 223 precisely controllable during micro-opening.

[0086] Please see Figure 3 and Figure 4 And see also Figure 6 In some embodiments, the clamping device 100 further includes a guide assembly 60, which includes a guide rail 61, a first slider 62 and a second slider 63. The guide rail 61 extends along the length direction X of the base 10. The first slider 62 and the second slider 63 are slidably mounted on the guide rail 61. The first clamping member 21 is mounted on the first slider 62 and the second clamping member 22 is mounted on the second slider 63.

[0087] Specifically, the first clamp 212 is mounted on the first slider 62, and the second clamp 222 is mounted on the second slider 63.

[0088] The first slider 62, the second slider 63, and the guide rail 61 cooperate to guide the first clamping member 21 and the second clamping member 22 to slide, thereby improving the stability and reliability of the clamping device 100's operation switching.

[0089] This application also provides a string welding machine, which includes the clamping device 100 as described in any of the above embodiments. The string welding machine in this application has the effects of any of the above embodiments, and therefore will not be described again here.

[0090] In the aforementioned clamping device 100 and string welding machine, the first transmission member 32 and the first clamping member 21 are in rolling engagement, which creates rolling friction between the first transmission member 32 and the first clamping member 21. The second transmission member 33 and the second clamping member 22 are in rolling engagement, which creates rolling friction between the second transmission member 33 and the second clamping member 22. This design can reduce wear during the transmission process and extend the service life of the clamping device 100.

[0091] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A clamping device, characterized in that The clamping device comprises: a base (10); a clamping assembly (20) arranged on the base (10) and comprising a first clamping piece (21) having a plurality of first clamping jaws (213) and a second clamping piece (22) having a plurality of second clamping jaws (223), the first clamping jaws (213) and the second clamping jaws (223) being arranged alternately and in pairs along the length direction (X) of the base (10); a transmission assembly (30) comprising a rotating seat (31), a first transmission piece (32) and a second transmission piece (33), the first transmission piece (32) and the second transmission piece (33) being installed on the rotating seat (31), the first transmission piece (32) being in rolling engagement with the first clamping piece (21), and the second transmission piece (33) being in rolling engagement with the first clamping piece (21); wherein, when the rotating seat (31) is controlled to drive the first transmission piece (32) and the second transmission piece (33) to rotate, the first transmission piece (32) and the second transmission piece (33) jointly drive the paired first clamping jaws (213) and the paired second clamping jaws (223) to slide towards or away from each other along the length direction (X) of the base (10), so as to close or open the paired first clamping jaws (213) and the paired second clamping jaws (223).

2. The clamping device of claim 1, wherein The first clamping piece (21) has a first action surface (2111), and the second clamping piece (22) has a second action surface (2211), the first action surface (2111) and the second action surface (2211) being arranged alternately along the width direction (Y) of the base (10); the first transmission piece (32) and the second transmission piece (33) are located between the first action surface (2111) and the second action surface (2211), and the first transmission piece (32) is in rolling engagement with the first action surface (2111), and the second transmission piece (33) is in rolling engagement with the second action surface (2211).

3. The clamping device of claim 1, wherein The first transmission piece (32) and the second transmission piece (33) are both needle bearings.

4. The clamping device of claim 1, wherein The clamping device further comprises an opening and closing driving assembly (40) installed on the base (10) and in transmission connection with the rotating seat (31), the opening and closing driving assembly (40) being used to drive the rotating seat (31) to rotate, so as to close or open the paired first clamping jaws (213) and the paired second clamping jaws (223).

5. The clamping device of claim 4, wherein The opening and closing driving assembly (40) comprises an opening and closing driving cylinder (41), a floating joint (42), a connecting block (43) and a rotary joint (44), the opening and closing driving cylinder (41) having an opening and closing driving telescopic rod, the opening and closing driving telescopic rod, the floating joint (42), the connecting block (43), the rotary joint (44) and the rotating seat (31) being in transmission connection in sequence.

6. The clamping device of claim 5, wherein The opening and closing driving cylinder (41) is a force multiplication cylinder.

7. The clamping device of claim 5, wherein The rotating seat (31) is provided with a waist-shaped hole (311) extending along the arrangement direction of the first transmission member (32) and the second transmission member (33), and the rotary joint (44) comprises a joint body (441) and a rotating shaft (442), the rotating shaft (442) is arranged in the waist-shaped hole (311) and is rotationally connected with the rotating seat (31) and the joint body (441).

8. The holding device according to claim 1, characterized in that The clamping device further comprises a micro-opening driving assembly (50) mounted on the base (10), under the action of the micro-opening driving assembly (50), the rotating seat (31) drives the first transmission member (32) and the second transmission member (33) to rotate, and drives the first transmission member (32) and the second transmission member (33) to jointly drive the pair of first clamping jaws (213) and the second clamping jaws (223) to slide in opposite directions along the length direction (X) of the base (10) by a small distance, so that the pair of first clamping members (21) and the second clamping members (22) are slightly opened.

9. The clamping device of claim 8, wherein The micro-opening driving assembly (50) comprises a micro-opening driving cylinder (51) and a push block (52), the micro-opening driving cylinder (51) is in transmission connection with the push block (52) and is used for driving the push block (52) to push the rotating seat (31).

10. The clamping device of claim 9, wherein The rotating seat (31) has a first side and a second side arranged opposite along the length direction (X) of the base (10); The clamping device further comprises an opening and closing driving assembly (40) for driving the rotating seat (31) to rotate, so that the pair of first clamping jaws (213) and the second clamping jaws (223) are closed or opened; the opening and closing driving assembly (40) comprises an opening and closing driving cylinder (41), a floating joint (42), a connecting block (43) and a rotary joint (44), the opening and closing driving cylinder (41) has an opening and closing driving telescopic rod, the opening and closing driving telescopic rod, the floating joint (42), the connecting block (43), the rotary joint (44) and the rotating seat (31) are sequentially in transmission connection; the opening and closing driving cylinder (41), the floating joint (42), the connecting block (43) and the rotary joint (44) are arranged along the length direction (X) of the base (10) and located on the first side; the micro-opening driving cylinder (51) and the push block (52) are arranged along the length direction (X) of the base (10) and located on the second side.

11. The holding device according to claim 1, characterized in that The clamping device further comprises a guide assembly (60), the guide assembly (60) comprises a guide rail (61), a first sliding block (62) and a second sliding block (63), the guide rail (61) extends along the length direction (X) of the base (10), the first sliding block (62) and the second sliding block (63) are slidably mounted on the guide rail (61), the first clamping member (21) is mounted on the first sliding block (62), and the second clamping member (22) is mounted on the second sliding block (63).

12. The clamping device of claim 1, wherein The transmission assembly (30) further comprises an elastic member (38) abutting between the base (10) and the rotating seat (31), and the elastic member (38) is used to provide an elastic force to drive the rotating seat (31) to rotate and drive the pair of the first clamping jaw (213) and the second clamping jaw (223) to slide towards each other.

13. A stringer welding machine characterized by, A clamping device comprising any one of the features of claims 1 to 12.

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