Composite busbar hot and cold pressing device and production method thereof

Abstract

A device for manufacturing composite busbars has plural stations on a worktable 1, arranged evenly and circumferentially in a pentagonal layout. A mould placement base set 11 is rotated on the worktab

Description

[0001] The present invention relates to the field of composite busbars, and more particularly to a hot and cold pressing device for composite busbars and a production method thereof. BACKGROUND OF THE INVENTION

[0002] In recent years, with the rapid development of electric vehicles domestically, an increasing number of people have been purchasing them. Currently, there are three key core technologies relating to electric vehicles : power batteries, motors, and control systems. In the design of control systems, composite busbars are utilized. These composite busbars are applied to connect capacitors and IGBTs within the control system, serving as indispensable critical components.

[0003] The principle of manufacturing composite busbars is as follows: Two copper busbars are separated by an insulating adhesive layer and placed together in a pressing mold. Under certain temperature and pressure conditions, the insulating adhesive melts, bonding the two busbars together while ensuring mutual insulation.

[0004] The existing manufacturing method for composite busbars is as follows: Two semi-finished copper busbars and an insulating adhesive are manually placed into the mold. After closing the mold, the mold is manually lifted from the worktable into the hot press. The hot press raises the mold temperature to 170°C, softening the insulating adhesive and bonding the two semi-finished copper busbars together. The hot press then performs the hot-pressing operation. After a hot-pressing time of 500 seconds, the mold is manually fetched and transferred to the cold press for cooling. When the cooling time reaches 500 seconds, the mold is transferred to the worktable, and finally, the mold is opened to fetch the finished product.

[0005] The manufacturing process of composite busbars in the prior art has the following drawbacks:

[0006] 1. Manual opening and closing of the mold and manual mold handling are cumbersome, labor-intensive, and result in low production efficiency.

[0007] 2. The hot-pressing time is 500 seconds, and additional manual station switching time further increases the cycle, resulting in production periods that are unstable and exceed 500 seconds, thereby affecting production efficiency.

[0008] 3. The mold from the hot press is at 170°C, and manual handling for station switching poses a risk of bums. SUMMARY OF THE INVENTION

[0009] The present invention aims to provide a hot and cold pressing device for composite busbars to solve the aforementioned technical problems.

[0010] To achieve the above objective, the technical solution of the present invention is as follows: A hot and cold pressing device for composite busbars is provided. The hot and cold pressing device includes a worktable; wherein a feeding station, a preheating station, a heat preservation station, a cooling station, and an unloading station are evenly and circumferentially arranged on the worktable. A rotary switching mechanism and a mold placement base set are installed on the worktable with a driven connection connecting therebetween. The mold placement base set includes a rotary connecting frame and five mold placement bases evenly arranged along the circumferential outer side of the rotary connecting frame, each corresponding one-to-one with the feeding station, preheating station, heat preservation station, cooling station, and unloading station. The rotary switching mechanism drives the mold placement base set to rotate on the worktable, thereby enabling cyclic switching of the mold placement bases among the stations. A support frame and a support platform are installed on the worktable, with the support frame positioned around the support platform. Corresponding to the positions of the mold placement bases at the preheating station, heat preservation station, and cooling station, the support platform is equipped with a preheating-pressing mechanism, a heat preservation mechanism, and a cold-pressing mechanism, respectively, for performing preheating-pressing, heat preservation, and cold pressing on the products inside the molds at their respective stations. An opening and closing mold mechanism is installed on the support frame, and the opening and closing mold mechanism is pivotally arranged above the area between the feeding station and the unloading station. The opening and closing mold mechanism is used to open the mold at the unloading station or close the mold at the feeding station.

[0011] Preferably, the preheating-pressing mechanism includes an oil cylinder, an upper pressure plate, and a lower pressure plate. The lower pressure plate is located below the mold placement base at the corresponding preheating station. The oil cylinder is mounted on the support platform and drivably connected to the upper pressure plate, which is positioned above the mold placement base at the corresponding preheating station. The oil cylinder drives the upper pressure plate downward, pressing the mold with the product at the preheating station between the upper and lower pressure plates for preheating pressing. The mold placement base is arranged to slide up and down on the circumferential outer side of the rotary connecting frame, and an elastic element is provided on the mold placement base for upward resetting.

[0012] Preferably, the feeding station, preheating station, heat preservation station, cooling station, and unloading station are arranged in a regular pentagonal configuration. Protective shields are installed on the outer perimeter of the support frame corresponding to the preheating station, heat preservation station, and cooling station. The feeding station and the unloading station are adjacent on the same side.

[0013] Preferably, an annular locking teeth is provided at the inner center of the rotary connecting frame. The rotary switching mechanism includes a driving component and a gear mounted on the driving component. The gear meshes with the annular locking teeth, and the driving component drives the gear to engage and rotate with the annular locking teeth, thereby rotating the mold placement base set on the worktable.

[0014] Preferably, the opening and closing mold mechanism includes a drive motor, a horizontal swing rod, a vertical slide rod, and a gripper assembly. The horizontal swing rod is pivotally arranged on the support frame and can swing horizontally. The vertical slide rod is erected at one end of the horizontal swing rod. The drive motor drives the gripper assembly to slide up and down along the vertical slide rod.

[0015] Preferably, a horizontal limit plate is mounted on the support frame, and the opening and closing mold mechanism is arranged to swing on the horizontal limit plate. The horizontal limit plate has an arcshaped guide slot, and a guide block is mounted on the horizontal swing rod, which engages with the arcshaped guide slot to provide sliding guidance.

[0016] Preferably, the gripper assembly includes a fixed rod, a cylinder, and gripping jaws slidably mounted on opposite sides of the fixed rod. The cylinder drives the two gripping jaws toward each other for gripping or away from each other for releasing.

[0017] Preferably, a temperature and pressure monitoring mechanism is also provided on the worktable.

[0018] The present invention also provides a method for producing a composite busbar, which uses any of the above-described hot and cold pressing devices for composite busbars and includes the following steps:

[0019] S1. Placing two semi-finished copper busbars and insulating adhesive into the cavity of a mold lower base at the mold placement base corresponding to the feeding station; lowering the mold upper base by the opening and closing mechanism to close the mold.

[0020] S2. Driving, by the rotary switching mechanism, the mold placement base set to rotate on the worktable, rotating the mold from the feeding station to the preheating station; pressing downward the preheating-pressing mechanism for preheating until the mold temperature reaches 170°C, causing the insulating adhesive to soften and bond the two semi-finished copper busbars together, thus forming a composite busbar;

[0021] S3. Driving, by the rotary switching mechanism, the mold placement base set to rotate on the worktable, moving the mold from the preheating station to the heat preservation station; pressing downward the heat preservation mechanism to maintain the temperature of the mold;

[0022] S4. Driving, by the rotary switching mechanism, the mold placement base set to rotate on the worktable, moving the mold from the heat preservation station to the unloading station; raising, by the the opening and closing mechanism, the mold upper base to open the mold, after which manually fetching the finished composite busbar;

[0023] S5. Driving, by the rotary switching mechanism, the mold placement base set to rotate on the worktable, moving the empty mold from the unloading station back to the feeding station;

[0024] S6. Repeating steps S1-S5.

[0025] Preferably, the preheating-pressing time in step S2 is 250s, the heat preservation time in step S3 is 250s, and the rotation interval of the mold placement base set in steps S1-S5 is 250s.

[0026] The present invention offers the following advantages:

[0027] By using the rotary switching mechanism to drive the mold placement base set to rotate on the worktable, each mold placement base is cyclically switched among stations, ensuring that every mold at each station simultaneously undergoes its corresponding process. This achieves automatic station switching, and the use of the opening and closing mechanism’s auxiliary tooling allows for automated mold opening and closing without manual handling. This prevents scalding accidents caused by contact with high-temperature molds, ensuring greater safety and reliability. Meanwhile, the preheating-pressing mechanism, the heat preservation mechanism, and the cold-pressing mechanism are arranged on the support platform, while the opening and closing mechanism is separately arranged on the support frame. This layout effectively prevents mutual interference and enhances operational stability and safety. It also reduces labor, simplifies operation, and changes the original single 500s hot-pressing process into separate 250s preheating and heat preservation steps, shortening the production cycle to 250s and doubling production capacity, thereby improving overall production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0028] FIG. 1 is a front view of the embodiment of the present invention.

[0029] FIG. 2 is a side view of the embodiment of the present invention.

[0030] FIG. 3 is a perspective view of the embodiment of the present invention.

[0031] FIG. 4 is a top view of the embodiment of the present invention.

[0032] FIG. 5 is a rear-side perspective view of the embodiment of the present invention after the protective shields have been removed.

[0033] FIG. 6 is a schematic diagram showing the installation of the rotary switching mechanism on the worktable in the embodiment of the present invention.

[0034] FIG. 7 is a structural schematic diagram of part of the worktable mechanism without a mold inserted in the embodiment of the present invention.

[0035] FIG. 8 is a structural schematic diagram of part of the worktable mechanism with a mold inserted in the embodiment of the present invention.

[0036] FIG. 9 is a first structural schematic diagram of the opening and closing mold mechanism in the embodiment of the present invention.

[0037] FIG. 10 is a second structural schematic diagram of the opening and closing mold mechanism in the embodiment of the present invention.

[0038] FIG. 11 is a top perspective view of the gripper assembly in the embodiment of the present invention.

[0039] FIG. 12 is a bottom perspective view of the gripper assembly in the embodiment of the present invention.

[0040] FIG. 13 is a structural schematic diagram of the mold in the embodiment of the present invention.

[0041] FIG. 14 is a schematic diagram showing the appearance of the composite busbar at one angle in the embodiment of the present invention.

[0042] FIG. 15 is a schematic diagram showing the appearance of the composite busbar at another angle in the embodiment of the present invention.

[0043] Reference numerals: 1 Worktable, 2 Support Frame, 3 Support Platform, 4 Protective Shield, 5 Feeding Station, 6 Preheating Station, 7 Heat Preservation Station, 8 Cooling Station, 9 Unloading Station, 10 Rotary Switching Mechanism, 101 Driving Component, 102 Gear, 11 Mold Placement Base Set, 111 Rotary Connecting Frame, 112 Mold Placement Base, 12 Preheating-pressing Mechanism, 121 Oil Cylinder, 122 Upper Pressure Plate, 123 Lower Pressure Plate, 13 Heat Preservation Mechanism, 14 Cold-pressing Mechanism, 15 Opening and Closing Mold Mechanism, 151 Drive Motor, 152 Horizontal Swing Rod, 153 Vertical Slide Rod, 154 Gripper Assembly, 1541 Fixed Rod, 1542 Cylinder, 1543 Gripper Jaw, 155 Guide Block, 16 Horizontal Limit Plate, 161 Arc-shaped Guide Slot, 17 Mold, 171 Mold Upper Base, 172 Mold Lower Base, 18 Copper Busbar, 19 Insulating Adhesive. DETAILED DESCRIPTION OF THE INVENTION

[0044] To further illustrate various embodiments, the present invention provides accompanying drawings. These drawings form part of the disclosure and primarily serve to explain the embodiments. Together with relevant descriptions in the specification, they help elucidate the operational principles of the embodiments. With these references, those skilled in the art can understand other possible implementations and the advantages of the present invention. The components in the figures are not drawn to scale, and similar reference numerals generally indicate similar components.

[0045] Referring to FIGS. 1-15, as an embodiment of the present invention, a hot and cold pressing device for composite busbars is provided. This device includes a worktable 1, on which a feeding station 5, preheating station 6, heat preservation station 7, cooling station 8, and unloading station 9 are evenly arranged circumferentially. A rotary switching mechanism 10 is drivably connected to a mold placement base set 11. The rotary switching mechanism 10 and the mold placement base set 11 are installed on the worktable 1. The mold placement base set 11 includes a rotary connecting frame 111 and five mold placement bases 112 evenly arranged around circumferential outer side of the rotary connecting frame 111. Each mold placement base 112 corresponds one-to-one with the feeding station 5, preheating station 6, heat preservation station 7, cooling station 8, and unloading station 9. The rotary switching mechanism 10 drives the mold placement base set 11 to rotate on the worktable 1, thereby achieving cyclic switching of the mold placement bases 112 among the stations. A support frame 2 and a support platform 3 are installed on the worktable 1, with the support frame 2 positioned around the support platform 3. The support platform 3 is equipped with a preheating-pressing mechanism 12, a heat preservation mechanism 13, and a cold-pressing mechanism 14 corresponding respectively to the positions of the mold placement bases 112 at the preheating station 6, heat preservation station 7, and cooling station 8. Each mechanism performs its respective preheating, heat preservation, or cold-pressing operation on the product inside the mold 17 at that station. An opening and closing mold mechanism 15 is mounted on the support frame 2 and is pivotally arranged above the area between the feeding station 5 and the unloading station 9. The opening and closing mold mechanism 15 is used to open the mold 17 at the unloading station 9 or close the mold 17 at the feeding station 5.

[0046] The preheating-pressing mechanism 12 includes an oil cylinder 121, an upper pressure plate 122, and a lower pressure plate 123. The lower pressure plate 123 is located below the mold placement base 112 at the corresponding preheating station 6. The oil cylinder 121 is mounted on the support platform and is drivablely connected to the upper pressure plate 122, which is positioned above the mold placement base 112 at the preheating station 6. The oil cylinder 121 drives the upper pressure plate 122 downward, pressing the product-holding mold 17 of the mold placement base 112 at the preheating station between the upper pressure plate 122 and the lower pressure plate 123 for the preheating-pressing operation. The mold placement base 112 is slidably arranged along the outer circumference of the rotary connecting frame 111 in the vertical direction and is equipped with an elastic element, specifically a spring, for upward resetting. When the upper pressure plate 122 moves downward, the upper pressure plate 122 drives the mold placement base 112 and the mold 17 downward until the mold 17 contacts the lower pressure plate 123. After the preheating-pressing operation is completed, the upper pressure plate 122 moves upward, and the mold placement base 112 and the mold 17 return to their original positions under restoring force of the spring, leaving the mold 17 suspended and ready for rotation to the next station. The heat preservation mechanism 13 and the cold-pressing mechanism 14 share the same structural and functional principles as the preheating-pressing mechanism 12, each with an oil cylinder, an upper pressure plate, and a lower pressure plate, differing only in their corresponding positions and functions and thus not described in detail here.

[0047] The processing procedure of the hot and cold pressing device for composite busbars according to the present invention is as follows:

[0048] SI. Placing two semi-finished copper busbars 18 and the insulating adhesive 19 into the cavity of the mold lower base 172 at the mold placement base 112 corresponding to the feeding station 5; lowering, by the opening and closing mechanism 15, the mold upper base 171 to close the mold;

[0049] S2. Driving, by the rotary switching mechanism 10, the mold placement base set 11 to rotate on the worktable 1, moving the mold 17 at the feeding station 5 to the preheating station 6; pressing downward, by the preheating-pressing mechanism 12, to preheat and press the mold 17 until the mold 17 reaches 170°C, causing the insulating adhesive 19 to soften and bond the two semi-finished copper busbars 18 together. The preheating-pressing time is 250s, resulting in a composite busbar.

[0050] S3. Driving, by the rotary switching mechanism 10, the mold placement base set 11 to rotate on the worktable 1, moving the mold 17 at the preheating station 6 to the heat preservation station 7; pressing downward, by the heat preservation mechanism 13, to maintain the mold 17 at the required temperature for 250s.

[0051] S4. Driving, by the rotary switching mechanism 10, the mold placement base set 11 to rotate on the worktable 1, moving the mold 17 at the heat preservation station 7 to the unloading station 9; raising, by the opening and closing mechanism 15, the mold upper base 171 to open the mold, and manually fetching the finished composite busbar.

[0052] S5. Driving, by the rotary switching mechanism 10, the mold placement base set 11 to rotate on the worktable 1, returning the empty mold 17 from the unloading station 9 back to the feeding station 5.

[0053] S6. Repeating steps S1-S5.

[0054] By using the rotary switching mechanism 10 to drive the mold placement base set 11, the mold placement bases 112 rotate among each station, ensuring that every mold 17 simultaneously undergoes its corresponding process step. This achieves fully automatic station switching, while the opening and closing mechanism 15 assists with mold opening and closing without manual handling or mold transfer. This effectively prevents the risk of bums from high-temperature molds, ensuring greater safety and reliability. The preheating-pressing mechanism 12, heat preservation mechanism 13, and cold-pressing mechanism 14 are all installed on the support platform 3, while the opening and closing mechanism 15 is independently installed on the support frame 2 to prevent operational interference, ensuring stable and safe operation with reduced labor and simpler procedures. Changing the original single 500s hot-pressing process into separate 250s preheating and 250s heat preservation steps shortens the production cycle to 250s and more than doubles production capacity, significantly improving production efficiency.

[0055] Referring to FIGS. 2, 3, and 7, in this embodiment, the feeding station 5, preheating station 6, heat preservation station 7, cooling station 8, and unloading station 9 are arranged in a regular pentagonal configuration. Protective shields 4 are installed around the support frame 2 corresponding to the preheating station 6, heat preservation station 7. and cooling station 8. The feeding station 5 and the unloading station 9 are adjacent on the same side, providing a rational and ingenious arrangement. This design facilitates convenient manual loading and unloading on the same side, effectively reduces the risk of bums, and further improves safety.

[0056] In this embodiment, an annular locking teeth is provided at the inner center of the rotary connecting frame 111. The rotary switching mechanism 10 includes a driving component 101 and a gear 102 mounted on it. The driving component 101 is a servo motor, and the gear 102 meshes with the annular locking teeth. The driving component 101 drives the gear 102 to engage and rotate with the annular locking teeth, thereby rotating the mold placement base set 11 on the worktable 1.

[0057] Referring to FIGS. 9-12, in this embodiment, the opening and closing mold mechanism 15 includes a drive motor 151, a horizontal swing rod 152, a vertical slide rod 153, and a gripper assembly 154. The horizontal swing rod 152 is pivotally arranged on the support frame 2 for horizontal swinging, and the vertical slide rod 153 is erected at one end of the horizontal swing rod 152. The drive motor 151 drives the gripper assembly 154 to slide up and down along the vertical slide rod 153. The gripper assembly 154 includes a fixed rod 1541, a cylinder 1542, and gripping jaws 1543 slidably installed on opposite sides of the fixed rod 1541. The cylinder 1542 drives the gripping jaws 1543 to move toward each other to grip or away from each other to release, thereby lifting or lowering the mold upper base 171. Specifically, both sides of the mold upper base 171 have recessed slots, and the gripping jaws 1543 have projecting posts that fit into these recessed slots, enabling secure gripping and lifting of the mold upper base 171.

[0058] In this embodiment, a horizontal limit plate 16 is installed on the support frame 2, and the opening and closing mold mechanism 15 is arranged to swing horizontally on the horizontal limit plate 16. The horizontal limit plate 16 is provided with an arc-shaped guide slot 161, and a guide block 155 is mounted on the horizontal swing rod 152. The guide block 155 fits slidably into the arc-shaped guide slot 161, ensuring precise swinging movements of the opening and closing mold mechanism 15, which in turn guarantees accurate and reliable mold opening and closing operations.

[0059] In this embodiment, a temperature and pressure monitoring mechanism is also provided on the worktable 1. This mechanism monitors temperature and pressure during processing and issues alarms for nonconforming products (NG products), effectively ensuring product quality.

[0060] The present invention also provides a production method for composite busbars using the aforementioned hot and cold pressing device, which includes the following steps:

[0061] SI. Placing two semi-finished copper busbars 18 and insulating adhesive 19 into the cavity of the mold lower base 172 at the mold placement base 112 located at the feeding station 5; lowering, by the opening and closing mechanism 15, the mold upper base 171 to close the mold;

[0062] S2. Driving, by the rotary switching mechanism 10, the mold placement base set 11 to rotate on the worktable 1, moving the mold 17 from the feeding station 5 to the preheating station 6; pressing downward, by the preheating-pressing mechanism 12, to perform preheating until the mold 17 reaches 170°C, causing the insulating adhesive 19 to soften and bond the two semi-finished copper busbars 18 together, thus forming the composite busbar.

[0063] 3. Driving, by the rotary switching mechanism 10, the mold placement base set 11 to rotate on the worktable 1, moving the mold 17 from the preheating station 6 to the heat preservation station 7; pressing downward, by the heat preservation mechanism 13, to maintain the temperature of the mold 17.

[0064] S4. Driving, by the rotary switching mechanism 10, the mold placement base set 11 to rotate on the worktable 1, moving the mold 17 from the heat preservation station 7 to the unloading station 9; raising, by the opening and closing mechanism 15, the mold upper base 171 to open the mold, after which manually fetching the finished composite busbar.

[0065] S5. Driving, by the rotary switching mechanism 10, the mold placement base set 11 to rotate on the worktable 1, returning the now empty mold 17 from the unloading station 9 to the feeding station 5.

[0066] S6. Repeating steps S1-S5.

[0067] In this embodiment, the preheating-pressing time in step S2 is 250s, the heat preservation time in step S3 is 250s, and the rotation interval of the mold placement base set 11 in steps S1-S5 is also 250s. Every 250s, the rotary switching mechanism 10 drives the mold placement base set 11 to rotate once on the worktable 1, enabling cyclic switching of the mold placement bases 112 among the stations. This ensures that the molds 17 at each station simultaneously undergo their respective process steps, reducing the production cycle from the original 500s to 250s, thereby more than doubling production capacity and greatly improving production efficiency.

[0068] Although the invention has been specifically described and shown in connection with preferred embodiments, it will be understood by those skilled in the art that various modifications in form and detail may be made without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A hot and cold pressing device for a composite busbar, comprising:a worktable; a feeding station, a preheating station, a heat preservation station, a cooling station, and an unloading station are evenly arranged on the worktable in a circumferential manner; a rotary switching mechanism and a mold placement base set are installed on the worktable with a drive connection;wherein the mold placement base set comprises a rotary connecting frame and five mold placement bases evenly arranged along the circumferential outer side of the rotary connecting frame, each mold placement base corresponding one-to-one with the feeding station, the preheating station, the heat preservation station, the cooling station, and the unloading station, respectively;the rotary switching mechanism is configured to drive the mold placement base set to rotate on the worktable, thereby enabling cyclic station switching of the mold placement bases;a support frame and a support platform are mounted on the worktable, with the support frame arranged around the support platform;the support platform is provided at positions respectively corresponding to the preheating station, heat preservation station, and cooling station, with a preheating-pressing mechanism, a heat preservation mechanism, and a cold-pressing mechanism for performing preheating-pressing, heat preservation, and cold pressing operations on a product inside a mold positioned at the preheating station, heat preservation station, and cooling station; wherein the heat preservation mechanism is a press;an opening and closing mold mechanism is installed on the support frame, pivotally arranged above an area between the feeding station and the unloading station, and configured to open the mold at the unloading station or close the mold at the feeding station;wherein the preheating-pressing mechanism comprises an oil cylinder, an upper pressure plate, and a lower pressure plate, with the lower pressure plate located below the mold placement base at the preheating station, the oil cylinder mounted on the support platform and drivingly connected to the upper pressure plate positioned above the mold placement base at the preheating station, so that the oil cylinder is capable of driving the upper pressure plate downward to press the mold holding the product between the upper and lower pressure plates for preheating-pressing;wherein each mold placement base is slidably mounted on the circumferential outer side of the rotary connecting frame for movement in a vertical direction perpendicular to the worktable, and an elastic element is provided on the mold placement base for upward resetting;wherein the feeding station, the preheating station, the heat preservation station, the cooling station, and the unloading station form a pentagonal layout; protective shields are mounted on the support framearound the preheating station, the heat preservation station, and the cooling station; the feeding station and the unloading station are located adjacent to one another;wherein an annular locking teeth is provided on the inner peripheral surface of the rotary connecting frame, and the rotary switching mechanism includes a driving component and a gear mounted thereon, the gear meshing with the annular locking teeth and the driving component configured to drive the gear to engage with the annular locking teeth to rotate the mold placement base set on the worktable;wherein the opening and closing mold mechanism includes a drive motor, a horizontal swing rod, a vertical slide rod, and a gripper assembly, the horizontal swing rod being pivotally arranged on the support frame for horizontal swinging, the vertical slide rod arranged vertically at one end of the horizontal swing rod, and the drive motor configured to drive the gripper assembly to slide up and down along the vertical slide rod;wherein a horizontal limit plate is installed on the support frame, and the opening and closing mold mechanism is arranged to swing on the horizontal limit plate; the horizontal limit plate is formed with an arc-shaped guide slot, and a guide block is mounted on the horizontal swing rod to slidingly engage with the arc-shaped guide slot.

2. The hot and cold pressing device for a composite busbar according to claim 1, wherein the gripper assembly comprises a fixed rod, a cylinder, and gripping jaws slidably mounted on opposite sides of the fixed rod; the cylinder is configured to drive the gripping jaws either toward each other for gripping or away from each other for releasing.

3. The hot and cold pressing device for a composite busbar according to claim 1, wherein a temperature and pressure monitoring mechanism is provided on the worktable.

4. A method for producing a composite busbar using the hot and cold pressing device for a composite busbar according to claim 1, comprising the steps of:SI. placing two semi-finished copper busbars and an insulating adhesive into a cavity of a mold lower base at mold placement base of the feeding station, and operating the opening and closing mold mechanism to lower a mold upper base to close the mold;S2. driving, by the rotary switching mechanism, the mold placement base set to rotate on the worktable, thereby moving the mold from the feeding station to the preheating station, and then pressing downward with the preheating-pressing mechanism for preheating until the mold temperature reaches 170°C to soften the insulating adhesive and bond the two semi-finished copper busbars together, thereby forming the composite busbar;S3, continuing to drive the mold placement base set to rotate on the worktable so that the mold at the preheating station moves to the heat preservation station, then pressing downward with the heat preservation mechanism to maintain the mold temperature;S4. continuing to drive the mold placement base set to rotate on the worktable so that the mold at the heat preservation station moves to the unloading station, and operating the opening and closing mold mechanism to raise the mold upper base to open the mold, after which manually fetching the finished composite busbar;S5. continuing to drive the mold placement base set to rotate on the worktable so that the empty mold at the unloading station returns to the feeding station; andS6. repeating steps S1-S5.

5. The method for producing a composite busbar according to claim 4, wherein the preheatingpressing time in step S2 is 250s, the heat preservation time in step S3 is 250s, and the rotation interval of the mold placement base set in steps S1-S5 is 250s.

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