Clamping mechanism, ribbon pulling device and stringer

Abstract

The utility model discloses a kind of clamping mechanism, pull welding strip device and string welding machine, clamping mechanism includes clamping seat, two second clamping parts and driving part, the both ends of the clamping seat are respectively with first clamping part, the first clamping part has recess;The first end of each second clamping part is connected with the driving end of the driving part, the second end of each second clamping part can extend into corresponding one recess, and the working state of two second clamping parts is different. Therefore, by the bidirectional drive of driving part, the convenient switching of two working states of the closure and opening of two second clamping parts on both sides of clamping seat can be realized, to realize the convenient switching of two station workpiece clamping and release.

Description

Technical Field

[0001] This utility model relates to the field of welding strip stringing technology, and more specifically, to a clamping mechanism, a welding strip pulling device, and a stringing machine. Background Technology

[0002] With the increasing global demand for clean energy, the solar photovoltaic industry has developed rapidly. Among them, BC (back contact) cell modules, as a type of high-efficiency photovoltaic cell module, occupy an increasingly important position in the photovoltaic market due to their unique back electrode cross-layout design, higher photoelectric conversion efficiency, and superior power generation performance.

[0003] In the production of BC battery modules, string welding is one of the key processes. String welding involves connecting multiple battery cells in series using solder strips to form a module, thereby improving the individual power output and overall output capacity of the battery module.

[0004] In existing BC battery module stringing processes, each set of solder strip unwinding mechanisms is typically equipped with multiple rolls of solder strip to meet the needs of continuous production. In actual production, when a roll of solder strip is used up, it needs to be manually replaced by an operator. The replacement process is cumbersome, time-consuming, and also affects the equipment's capacity and production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a new technical solution for a clamping mechanism, a welding strip pulling device, and a string welding machine.

[0006] According to one aspect of the present invention, a clamping mechanism is provided.

[0007] The clamping mechanism includes:

[0008] A clamping seat, wherein each end of the clamping seat has a first clamping portion, and the first clamping portion has a groove;

[0009] Two second clamping parts and a driving part are provided on the clamping seat. The first end of each second clamping part is connected to the driving end of the driving part. The second end of each second clamping part can extend into a corresponding groove. The two second clamping parts have different working states.

[0010] Optionally, the second clamping part has an open state and a closed state. Under the drive of the driving part, the second end of one of the second clamping parts can move toward the bottom of the groove until a clamping gap is formed with the bottom of the groove, so that the corresponding second clamping part is in the closed state; the second end of the other second clamping part can move away from the bottom of the groove, so that the corresponding second clamping part is in the open state.

[0011] Optionally, the drive unit includes a telescopic cylinder, the telescopic cylinder having a telescopic rod, and each end of the telescopic rod is connected to a second clamping part;

[0012] When one end of the telescopic rod extends, the telescopic rod pushes the second clamping part connected to that end to move until it forms the clamping gap with the bottom of the groove, and pulls the second clamping part at the other end to move away from the bottom of the groove.

[0013] Optionally, it also includes two connectors, each of the second clamping parts having a connecting hole at its first end, and each end of the telescopic rod being connected to one end of one of the connectors, and the other end of each connector being movably connected to a corresponding connecting hole;

[0014] When the telescopic rod extends or retracts, each connector can move within the corresponding connector hole.

[0015] Optionally, the connecting hole is a strip-shaped hole, and the long axis of the strip-shaped hole has a first included angle with the extension and retraction direction of the telescopic rod.

[0016] Optionally, the strip hole has a first limiting portion and a second limiting portion along the long axis direction. When the connector is in the first limiting portion, the connector pushes the second end of the second clamping portion to abut against the bottom of the groove. When the connector is in the second limiting portion, the connector pulls the second end of the second clamping portion away from the bottom of the groove, and the positions of the two connectors are opposite.

[0017] Optionally, the connector has a Y-shaped structure, with the forked end of the connector slidably connected to the connecting hole, and the converging end of the connector connected to the telescopic rod.

[0018] Optionally, the clamping seat includes a first part, a second part, and a third part, the third part being connected between the first part and the second part, and the third part having a second included angle with the first part and the third part having a second included angle with the second part, one of the grooves being located between the third part and the first part, and the other groove being located between the third part and the second part.

[0019] Optionally, the end of the projection of one of the grooves onto the clamping seat is flush with the edge of the first portion, and the end of the projection of the other groove onto the clamping seat is flush with the edge of the second portion.

[0020] Optionally, the device includes a mounting plate and a plurality of clamping seats, the plurality of clamping seats being connected side-by-side to the mounting plate, each clamping seat being connected to two second clamping parts and one driving part, and the driving directions of the plurality of driving parts being consistent.

[0021] Optionally, it also includes a main gas connector and multiple branch gas connectors, the main gas connector being disposed on the mounting plate, each of the clamps being provided with one branch gas connector, and the multiple branch gas connectors being respectively connected to the main gas connector;

[0022] And / or, it also includes a plurality of speed control valves, each of the clamping seats having at least one of the speed control valves, the speed control valves being used to adjust the driving state of the corresponding drive unit.

[0023] According to another aspect of the present invention, a welding strip pulling device is provided, comprising a horizontal movement mechanism, a lifting mechanism and the clamping mechanism, wherein the clamping mechanism is connected to the lifting mechanism and the lifting mechanism is disposed on the horizontal movement mechanism.

[0024] According to another aspect of the present invention, a string welding machine is provided, including the clamping mechanism or the welding strip pulling device.

[0025] One technical advantage of this utility model is:

[0026] The clamping mechanism includes a clamping base, two second clamping parts, and a driving part. The clamping base has a first clamping part at each end, and the first clamping part has a groove. The driving part is disposed on the clamping base. The first end of each second clamping part is connected to the driving end of the driving part. The second end of each second clamping part can extend into a corresponding groove, and the two second clamping parts have different working states.

[0027] Therefore, by utilizing the bidirectional drive of the drive unit, it is possible to conveniently switch between the closed and open working states of the two second clamping parts on both sides of the clamping seat, so as to facilitate the switching between workpiece clamping and release at the two workstations, thereby enhancing the clamping capacity of the clamping mechanism and adapting to the needs of automated production lines.

[0028] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0029] The accompanying drawings, which form part of this specification, illustrate embodiments of the present invention and, together with the specification, serve to explain the principles of the present invention.

[0030] Figure 1 This is a schematic diagram of a strip welding device according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of a clamping mechanism according to an embodiment of the present utility model;

[0032] Figure 3 This is another schematic diagram of a clamping mechanism according to an embodiment of the present utility model;

[0033] Figure 4 This is a schematic diagram of another clamping mechanism according to an embodiment of the present utility model;

[0034] Figure 5 This is another schematic diagram of a clamping mechanism according to another embodiment of the present utility model;

[0035] Figure 6 This is yet another schematic diagram of a clamping mechanism according to another embodiment of the present utility model;

[0036] Figure 7 yes Figure 6 Sectional view at point AA.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100. Clamping mechanism;

[0039] 1. Clamping seat; 11. Groove; 12. First part; 13. Second part; 14. Third part; 15. Connecting shaft; 16. Snap ring; 2. Second clamping part; 21. Connecting hole; 211. First limiting part; 212. Second limiting part; 3. Drive part; 31. Telescopic cylinder; 311. Telescopic rod; 4. Connector; 5. Mounting plate; 6. Main air connector; 7. Branch air connector; 8. Speed ​​control valve;

[0040] 200. Horizontal motion mechanism; 300. Lifting mechanism. Detailed Implementation

[0041] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0042] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0043] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0044] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0046] This invention provides a clamping mechanism 100, which can clamp workpieces during the production process to facilitate corresponding operations. The workpieces include, but are not limited to, welding strips, electrode sheets, and battery cells.

[0047] like Figures 4 to 6 As shown, the clamping mechanism 100 provided by this utility model includes:

[0048] The clamping base 1 has a first clamping part at each end, and the first clamping part has a groove 11;

[0049] Two second clamping parts 2 and a driving part 3 are provided on the clamping base 1. The first end of each second clamping part 2 is connected to the driving end of the driving part 3. The second end of each second clamping part 2 can extend into a corresponding groove 11, and the two second clamping parts 2 have different working states.

[0050] Specifically, grooves 11 are provided on the first clamping parts at both ends of the clamping base 1. The grooves 11 are used to cooperate with the second clamping part 2 to clamp and release the workpiece, so as to adapt to different production needs.

[0051] like Figures 4 to 6 As shown, the driving end of the driving unit 3 is connected to the first ends of the two second clamping parts 2, so that the two second clamping parts 2 can move under the drive of the driving unit 3. The second ends of the two second clamping parts 2 are arranged to face the corresponding grooves 11, so that they can move closer to or away from the grooves 11 under the drive of the first ends of the second clamping parts 2, thereby realizing the switching of the working state of the corresponding second clamping parts 2.

[0052] The drive unit 3 can be a telescopic cylinder 31, a linear motor, or other structures. The output end of the drive unit 3 is connected to the first end of the two second clamping parts 2, so that the drive unit 3 can transmit driving forces in opposite directions to the first end of the two second clamping parts 2.

[0053] Specifically, in the first driving state of the drive unit 3, for example, the telescopic rod 311 of the telescopic cylinder 31 is directed towards... Figure 4 Extending to the left, or rotating the linear motor forward so that the output shaft, i.e., the mover, faces... Figure 4When the left side extends, the drive unit 3 pushes the first end of the second clamping part 2 on the left side, causing the second end of the second clamping part 2 on the left side to rotate around the first end and approach the bottom of the groove until the second end of the second clamping part 2 on the left side engages with the bottom of the groove to form a clamping gap. This clamping gap is used to clamp the workpiece, thereby achieving the clamping and fixing of the workpiece. At the same time, the drive unit 3 pulls the first end of the second clamping part 2 on the right side, causing the second end of the second clamping part 2 on the right side to rotate around the first end and move away from the bottom of the groove, that is, releasing the clamping of the workpiece. At this time, the second clamping part 2 on the left side is in a closed state, and the second clamping part 2 on the right side is in an open state.

[0054] Similarly, in the second driving state of the drive unit 3, for example, the telescopic rod 311 of the telescopic cylinder 31 is directed towards... Figure 4 Extending to the right, or reversing the linear motor so that the output shaft, i.e., the mover, faces... Figure 4 When the right side extends, the drive unit 3 pushes the first end of the second clamping part 2 on the right side, causing the second end of the second clamping part 2 on the right side to rotate around the first end and approach the bottom of the groove until the second end of the second clamping part 2 on the right side engages with the bottom of the groove to form a clamping gap. This clamping gap is used to clamp the workpiece, thereby achieving the clamping and fixing of the workpiece. At the same time, the drive unit 3 pulls the first end of the second clamping part 2 on the left side, causing the second end of the second clamping part 2 on the left side to rotate around the first end and move away from the bottom of the groove, that is, releasing the clamping of the workpiece. At this time, the second clamping part 2 on the right side is in a closed state, and the second clamping part 2 on the left side is in an open state.

[0055] The clamping gap formed by the second end of the second clamping part 2 fitting into the bottom of the groove refers to the fit between the two when no workpiece is clamped. After the workpiece is clamped, the second end of the second clamping part 2 and the bottom of the groove can abut against the two sides of the workpiece respectively, thereby achieving the clamping and fixing of the workpiece.

[0056] In this design, the two ends of the drive unit 3 are connected to the two second clamping parts 2 on either side, so that under the drive of the drive unit 3, the two second clamping parts 2 experience opposite forces, allowing them to operate in different states. That is, when one second clamping part 2 is open, the other is closed. This allows for simultaneous workpiece clamping using the closed second clamping part 2 and workpiece replacement using the open second clamping part 2, enabling synchronized clamping and replacement to meet the needs of continuous production.

[0057] Therefore, by utilizing the bidirectional drive of the drive unit 3, the two second clamping units 2 on both sides of the clamping base 1 can be conveniently switched between the two working states of closed and open, so as to realize the convenient switching of workpiece clamping and release at the two workstations, thereby enhancing the clamping capacity of the clamping mechanism 100 to meet the needs of automated production lines.

[0058] Optionally, the second clamping part 2 has an open state and a closed state. Under the drive of the driving part 3, the second end of one of the second clamping parts 2 can move toward the bottom of the groove 11 until a clamping gap is formed with the bottom of the groove 11, so that the corresponding second clamping part 2 is in the closed state; the second end of the other second clamping part 2 can move away from the bottom of the groove 11, so that the corresponding second clamping part 2 is in the open state.

[0059] Specifically, under the drive of the drive unit 3, the two second clamping units 2 operate in opposite states, so that one second clamping unit 2 can cooperate with the corresponding first clamping unit to clamp the workpiece on that side, while the other second clamping unit 2 can cooperate with the corresponding first clamping unit to release the workpiece on that side. This facilitates convenient switching between clamping and releasing workpieces at the two workstations, thereby enhancing the clamping capacity of the clamping mechanism 100 to meet the needs of automated production lines.

[0060] Optionally, the drive unit 3 includes a telescopic cylinder 31, the telescopic cylinder 31 having a telescopic rod 311, and each end of the telescopic rod 311 is connected to a second clamping unit 2;

[0061] When one end of the telescopic rod 311 extends, the telescopic rod 311 pushes the second clamping part 2 connected to that end to move until it forms the clamping gap with the bottom of the groove, and pulls the second clamping part 2 at the other end to move away from the bottom of the groove.

[0062] For example, 4 to Figure 6 As shown, when the telescopic rod 311 of the telescopic cylinder 31 is oriented in the first direction, for example... Figure 4 When the left side extends, the telescopic rod 311 pushes the first end of the second clamping part 2 on the left, allowing the second end of the second clamping part 2 on the left to rotate around the first end and approach the bottom of the groove until the second end of the second clamping part 2 on the left engages with the bottom of the groove to form a clamping gap. This clamping gap is used to clamp the workpiece, thereby achieving the clamping and fixing of the workpiece. At the same time, the telescopic rod 311 pulls the first end of the second clamping part 2 on the right, allowing the second end of the second clamping part 2 on the right to rotate around the first end and move away from the bottom of the groove, thus releasing the clamping of the workpiece. At this time, the second clamping part 2 on the left is in a closed state, and the second clamping part 2 on the right is in an open state.

[0063] Similarly, when the telescopic rod 311 of the telescopic cylinder 31 is oriented in the opposite direction to the first direction, for example... Figure 4 When the right side extends, the telescopic rod 311 pushes the first end of the second clamping part 2 on the right side, allowing the second end of the second clamping part 2 on the right side to rotate around the first end and approach the bottom of the groove until the second end of the second clamping part 2 on the right side engages with the bottom of the groove to form a clamping gap. This clamping gap is used to clamp the workpiece, thereby achieving the clamping and fixing of the workpiece. At the same time, the telescopic rod 311 pulls the first end of the second clamping part 2 on the left side, allowing the second end of the second clamping part 2 on the left side to rotate around the first end and move away from the bottom of the groove, thus releasing the clamping of the workpiece. At this time, the second clamping part 2 on the right side is in a closed state, and the second clamping part 2 on the left side is in an open state.

[0064] The two ends of the telescopic rod 311 can be connected to the second clamping parts 2 on both sides respectively, so that under the drive of the telescopic cylinder 31, the second clamping parts 2 on both sides are subjected to opposite forces, that is, one is subjected to pushing force and the other is subjected to pulling force.

[0065] Optionally, it also includes two connectors 4, each of the second clamping parts 2 having a connection hole 21 at its first end, and each end of the telescopic rod 311 being connected to one end of one of the connectors 4, and the other end of each connector 4 being movably connected to a corresponding connection hole 21;

[0066] When the telescopic rod 311 is telescopic, each connector 4 can move within the corresponding connector hole 21.

[0067] like Figure 4 As shown, connector 4 is used to transmit power from telescopic rod 311 to second clamping part 2. Connector 4 can transmit the telescopic movement of telescopic rod 311 to the first end of second clamping part 2, so that the second end of second clamping part 2 can rotate around the first end and move closer to or away from the bottom of the groove.

[0068] Optionally, the connecting hole 21 is a strip-shaped hole, and the long axis of the strip-shaped hole has a first included angle with the extension and retraction direction of the telescopic rod 311.

[0069] Specifically, the end of the connector 4 connected to the second clamping part 2 can be provided with a protrusion. The protrusion is slidably connected to the slotted hole of the second clamping part 2 and can slide along the slotted hole. The long axis of the slotted hole is provided with a first angle to the extension / retraction direction of the telescopic rod 311, meaning the long axis of the slotted hole is not parallel to the extension / retraction direction of the telescopic rod 311. This allows the horizontally extending telescopic rod 311 to transmit a vertical component of power to the second end of the second clamping part 2 through the connector 4, thereby causing the second end of the second clamping part 2 to rotate around the first end to move closer to or away from the bottom of the groove, thus achieving the clamping and release of the workpiece.

[0070] Optionally, the strip hole has a first limiting portion 211 and a second limiting portion 212 along the long axis direction. When the connector 4 is in the first limiting portion 211, the connector 4 pushes the second end of the second clamping portion 2 to abut against the bottom of the groove. When the connector 4 is in the second limiting portion 212, the connector 4 pulls the second end of the second clamping portion 2 away from the bottom of the groove, and the positions of the two connectors 4 are opposite.

[0071] like Figure 4 and Figure 5 As shown, the first limiting part 211 can be the lower end of the strip hole, and the second limiting part 212 can be the upper end of the strip hole. When the telescopic rod 311 of the telescopic cylinder 31 is facing the first direction, for example... Figure 4 When the left side extends, the telescopic rod 311 can push the left connector 4 to the first limiting part 211, and drive the second end of the left second clamping part 2 to rotate around the first end and approach the bottom of the groove until the second end of the left second clamping part 2 is engaged with the bottom of the groove to form a clamping gap. This clamping gap is used to clamp the workpiece, thereby achieving the clamping and fixing of the workpiece. At the same time, the telescopic rod 311 pulls the right connector 4 to the second limiting part 212, and drives the second end of the right second clamping part 2 to rotate around the first end and move away from the bottom of the groove, that is, release the clamping of the workpiece.

[0072] Similarly, when the telescopic rod 311 of the telescopic cylinder 31 is oriented in the opposite direction to the first direction, for example... Figure 4 When the right side extends, the telescopic rod 311 can push the right connector 4 to the first limiting part 211, and drive the second end of the right second clamping part 2 to rotate around the first end and approach the bottom of the groove until the second end of the right second clamping part 2 is engaged with the bottom of the groove to form a clamping gap. This clamping gap is used to clamp the workpiece, thereby achieving the clamping and fixing of the workpiece. At the same time, the telescopic rod 311 pulls the left connector 4 to the second limiting part 212, and drives the second end of the left second clamping part 2 to rotate around the first end and move away from the bottom of the groove, that is, release the clamping of the workpiece.

[0073] Thus, the first limiting part 211 and the second limiting part 212 can limit the movement of the connector 4, thereby ensuring the stability and reliability of the second clamping part 2 in the open and closed states.

[0074] Optionally, the connector 4 has a Y-shaped structure, with the forked end of the connector 4 slidably connected to the connecting hole 21, and the converging end of the connector 4 connected to the telescopic rod 311.

[0075] Such as 4 and Figure 6 As shown, the two forked ends of the connector 4 are located on both sides of the connecting hole 21. The connecting shaft, pin, etc. can be inserted through the forked ends of the connector 4 and the connecting hole 21 to slide the two forked ends of the connector 4 together into the connecting hole 21. Under the extension and retraction drive of the telescopic rod 311, the forked ends of the connector 4 can slide along the connecting hole 21 and transmit power to the first end of the second clamping part 2, thereby driving the second end of the second clamping part 2 to rotate around the first end.

[0076] Optionally, the clamping seat 1 includes a first part 12, a second part 13 and a third part 14, the third part 14 being connected between the first part 12 and the second part 13, and the third part 14 having a second included angle with the first part 12 and the second part 13, respectively, one groove 11 being located between the third part 14 and the first part 12, and the other groove 11 being located between the third part 14 and the second part 13.

[0077] like Figure 4 and Figure 5 As shown, the clamping base 1 can be composed of a first part 12, a second part 13 and a third part 14 that are connected at an angle to the first part 12 and the second part 13 respectively, so that the first part 12, the second part 13 and the third part 14 can together form a clamping structure.

[0078] One groove 11 is located on the third part 14 and the first part 12, and the other groove 11 is located on the third part 14 and the second part 13. That is, one groove 11 extends from the third part 14 to the first part 12, and the other groove 11 extends from the third part 14 to the second part 13, forming inclined groove structures respectively, which facilitates the fitting of the corresponding second clamping part 2.

[0079] like Figures 4 to 7As shown, the first clamping part and the second end of the second clamping part 2 can be movably connected by the connecting shaft 15, so that the second end of the second clamping part 2 can rotate within the groove 11 of the first clamping part, thereby ensuring the reliability of the movement of the second clamping part 2. A retaining spring 16 can also be provided at the end of the connecting shaft 15, which can clamp the connecting shaft 15 and form a fixed connection.

[0080] Optionally, the end of the projection of one of the grooves 11 onto the clamping base 1 is flush with the edge of the first portion 12, and the end of the projection of the other groove 11 onto the clamping base 1 is flush with the edge of the second portion 13. That is, one end of one groove 11 extends to the middle of the third portion 14 and the other end extends to the edge of the first portion 12; one end of the other groove 11 extends to the middle of the third portion 14 and the other end extends to the edge of the second portion 13, which facilitates the rotational engagement of the corresponding second clamping portion 2.

[0081] Optionally, the system includes a mounting plate 5 and a plurality of clamping seats 1, the plurality of clamping seats 1 being connected side by side to the mounting plate 5, each clamping seat 1 being connected to two second clamping parts 2 and one driving part 3, and the driving directions of the plurality of driving parts 3 being consistent.

[0082] like Figure 2 and Figure 3 As shown, multiple clamping seats 1 are mounted in the same row on the mounting plate 5, enabling the clamping and release of multiple workpieces. The multiple driving units 3 are configured to drive in the same direction, meaning that the multiple clamping seats 1 can simultaneously clamp and release multiple workpieces on the same side, thereby enhancing the clamping capacity of the clamping mechanism 100 and facilitating convenient control of the multiple driving units 3.

[0083] Taking the string welding process as an example: the second clamping part 2 on multiple clamping seats 1 on one side cooperates with the corresponding first clamping part to clamp the main welding strip. After all the main welding strips are used up, the second clamping part 2 on multiple clamping seats 1 on the other side cooperates with the corresponding first clamping part to clamp the spare welding strip, thereby saving the welding strip replacement time.

[0084] Optionally, it also includes a main air connector 6 and multiple branch air connectors 7. The main air connector 6 is disposed on the mounting plate 5, each of the clamping seats 1 is provided with one branch air connector 7, and the multiple branch air connectors 7 are respectively connected to the main air connector 6.

[0085] And / or, it also includes a plurality of speed control valves 8, each of the clamping seats 1 being provided with at least one of the speed control valves 8, the speed control valves 8 being used to adjust the driving state of the corresponding driving unit 3.

[0086] like Figure 3 As shown, the main air connector 6 may include a main air inlet connector and a main air outlet connector, and each branch air connector 7 may also include a branch air inlet connector and a branch air outlet connector. All branch air inlets are connected to the main air inlet connector, and all branch air outlet connectors are connected to the main air outlet connector, thereby enabling convenient control of multiple drive units 3.

[0087] like Figure 4 As shown, the speed control valve 8 is connected to the telescopic rod 311 and can adjust the telescopic speed of the corresponding telescopic rod 311, thereby adjusting the movement state of the corresponding second clamping part 2.

[0088] like Figure 1 As shown, this utility model also provides a welding strip pulling device, including a horizontal movement mechanism 200, a lifting mechanism 300 and the clamping mechanism 100. The clamping mechanism 100 is connected to the lifting mechanism 300 and can move up and down along the lifting mechanism 300. The lifting mechanism 300 is disposed on the horizontal movement mechanism 200 and can drive the clamping mechanism 100 to move horizontally together, thereby realizing the tightening of the welding strip.

[0089] This utility model also provides a string welding machine, including the clamping mechanism 100 or the welding strip pulling device. The second clamping part 2 of the clamping mechanism 100 can cooperate with the first clamping part to clamp the workpiece.

[0090] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0091] While specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A clamping mechanism, characterized in that, include: A clamping seat (1) has a first clamping part at each end, and the first clamping part has a groove (11); Two second clamping parts (2) and a driving part (3) are provided on the clamping seat (1). The first end of each second clamping part (2) is connected to the driving end of the driving part (3). The second end of each second clamping part (2) can extend into a corresponding groove (11). The two second clamping parts (2) have different working states.

2. The clamping mechanism according to claim 1, characterized in that, The second clamping part (2) has an open state and a closed state. Under the drive of the drive part (3), the second end of one of the second clamping parts (2) can move toward the bottom of the groove (11) until a clamping gap is formed with the bottom of the groove (11), so that the corresponding second clamping part (2) is in the closed state; the second end of the other second clamping part (2) can move away from the bottom of the groove (11), so that the corresponding second clamping part (2) is in the open state.

3. The clamping mechanism according to claim 1, characterized in that, The drive unit (3) includes a telescopic cylinder (31), which has a telescopic rod (311), and each end of the telescopic rod (311) is connected to a second clamping part (2). When one end of the telescopic rod (311) extends, the telescopic rod (311) pushes the second clamping part (2) connected to that end to move until it forms the clamping gap with the bottom of the groove (11), and pulls the second clamping part (2) at the other end to move away from the bottom of the groove (11).

4. The clamping mechanism according to claim 3, characterized in that, It also includes two connectors (4), each of the second clamping parts (2) has a connecting hole (21) at its first end, and each end of the telescopic rod (311) is connected to one end of one of the connectors (4), and the other end of each connector (4) is movably connected to a corresponding connecting hole (21); When the telescopic rod (311) is telescopic, each connector (4) can move within the corresponding connector hole (21).

5. The clamping mechanism according to claim 4, characterized in that, The connecting hole (21) is a strip-shaped hole, and the long axis of the strip-shaped hole has a first included angle with the extension and retraction direction of the telescopic rod (311).

6. The clamping mechanism according to claim 5, characterized in that, The strip-shaped hole has a first limiting part (211) and a second limiting part (212) along the long axis direction. When the connector (4) is in the first limiting part (211), the connector (4) pushes the second end of the second clamping part (2) to abut against the bottom of the groove (11). When the connector (4) is in the second limiting part (212), the connector (4) pulls the second end of the second clamping part (2) away from the bottom of the groove (11), and the positions of the two connectors (4) are opposite.

7. The clamping mechanism according to claim 4, characterized in that, The connector (4) has a Y-shaped structure. The forked end of the connector (4) is slidably connected to the connecting hole (21), and the converging end of the connector (4) is connected to the telescopic rod (311).

8. The clamping mechanism according to claim 1, characterized in that, The clamping seat (1) includes a first part (12), a second part (13) and a third part (14). The third part (14) is connected between the first part (12) and the second part (13), and the third part (14) and the first part (12) and the third part (14) and the second part (13) have a second included angle, respectively. One groove (11) is located between the third part (14) and the first part (12), and the other groove (11) is located between the third part (14) and the second part (13).

9. The clamping mechanism according to claim 8, characterized in that, The end of the projection of one of the grooves (11) onto the clamping seat (1) is flush with the edge of the first part (12), and the end of the projection of the other groove (11) onto the clamping seat (1) is flush with the edge of the second part (13).

10. The clamping mechanism according to claim 1, characterized in that, It includes a mounting plate (5) and a plurality of clamping seats (1), the plurality of clamping seats (1) are connected side by side to the mounting plate (5), each clamping seat (1) is connected to two second clamping parts (2) and one driving part (3), and the driving directions of the plurality of driving parts (3) are consistent.

11. The clamping mechanism according to claim 10, characterized in that, It also includes a main air connector (6) and multiple branch air connectors (7). The main air connector (6) is located on the mounting plate (5). Each clamping seat (1) is provided with one branch air connector (7), and the multiple branch air connectors (7) are respectively connected to the main air connector (6). And / or, it also includes a plurality of speed control valves (8), each of the clamping seats (1) is provided with at least one of the speed control valves (8), the speed control valves (8) being used to adjust the driving state of the corresponding drive unit (3).

12. A strip welding device, characterized in that, It includes a horizontal motion mechanism (200), a lifting mechanism (300), and a clamping mechanism (100) as described in any one of claims 1 to 11, wherein the clamping mechanism (100) is connected to the lifting mechanism (300), and the lifting mechanism (300) is disposed on the horizontal motion mechanism (200).

13. A string welding machine, characterized in that, Includes the clamping mechanism (100) as described in any one of claims 1 to 11 or the welding strip pulling device as described in claim 12.

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