Material roll changing device

Abstract

The utility model relates to battery preparation technical field, concretely provides a material roll replacement device, it includes clamp, clamp is configured with reel insertion cooperation. The clamp includes main part and rolling element, and the main part includes the profiling part and special-shaped part, and the profiling part and special-shaped part connect integrally at the head and tail. The rolling element is movably arranged in the profiling part, and the rolling element is configured to support the reel along the gravity direction and can drive the reel to move along the first direction. The special-shaped part is configured to have a gap between the reel, and the first direction is the axis direction of the profiling part. The material roll replacement device provided by the application embodiment solves the problem that the fault tolerance is small when the reel is carried, and the reel is easily jammed or stuck due to processing errors. The special-shaped setting of the clamp main body fully accommodates the processing errors of the clamp, the reel and the equipment shaft, significantly reduces the risk of jamming, significantly improves the docking success rate, and effectively prevents the reel from deforming, the pole piece from being damaged or scratched.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, and in particular to a battery roll replacement device. Background Technology

[0002] As one of the electrode rolling equipment, the winding process of the roller press is crucial for ensuring production continuity. Roller presses typically employ a dual-shaft structure. When the upper winding shaft is full of electrode material of a preset length or diameter, it needs to switch to the lower, idle shaft to continue winding. This alternating dual-shaft operation enables continuous production and avoids production interruptions caused by stopping the machine to change coils after a single shaft is full.

[0003] When operating with dual shafts alternately, a fixture needs to be precisely aligned with the take-up shaft to handle the loading and unloading of full rolls and the filling of empty rolls. Due to unavoidable machining errors such as dimensional deviations and form / positional inaccuracies during the manufacturing process, insufficient precision can easily lead to jamming or even complete seizing during the alignment and roll-pushing actions. This generates additional mechanical impact forces, which can easily cause roll deformation, breakage or scratches to the electrode material, and affect alignment efficiency and production rhythm. Summary of the Invention

[0004] The material roll changing device provided by the embodiments of the present invention at least solves the problem of low error tolerance and easy jamming or sticking due to processing errors during roll handling.

[0005] The material roll changing device provided in the embodiments of the present invention includes,

[0006] The clamp is configured to engage with the reel;

[0007] The fixture includes a main body and a rolling element. The main body includes a contouring part and an irregularly shaped part, which are connected end to end to form a single unit.

[0008] The rolling element is movably disposed on the contouring part, and the rolling element is configured to support the drum along the direction of gravity and drive the drum to move along the first direction; the irregular part is configured to have a gap with the drum, and the first direction is the axial direction of the contouring part.

[0009] The material roll changing device provided in the embodiments of the present invention has a contoured part having an arc surface in the shape of an arc; the irregular part has a second plane, a third plane and a first plane, and the arc surface, the second plane, the first plane and the third plane are connected end to end to form a whole; wherein, the arc surface and the first plane are arranged sequentially along the direction of gravity; the shortest distance from the center of the arc surface to the first plane is less than the radius of the arc surface.

[0010] The material roll changing device provided in the embodiments of the present invention has rounded chamfers at the connection between the first plane and the second plane, and at the connection between the first plane and the third plane.

[0011] The material roll changing device provided in the embodiments of the present invention includes a clamp further comprising a stop member, the main body having a docking end along a first direction; the stop member being disposed at the docking end; the stop member comprising a stop block, the stop block being retractably disposed on the contoured portion along a second direction, the stop block being configured to extend and protrude from the rolling member or retract and be lower than the rolling member; the first direction and the second direction intersect.

[0012] The material roll changing device provided in the embodiment of the present invention further includes a first cylinder fixed inside the main body as the stop member;

[0013] Along the second direction, one end of the stop block slidably extends out of the first cylinder body, and the other end of the stop block is located inside the first cylinder body; the interior of the first cylinder body is divided into a first rod-side chamber and a first rodless chamber by the stop block; the first cylinder body is provided with a first air inlet communicating with the first rodless chamber; a return spring is provided in the first rodless chamber, one end of the return spring along the second direction is fixedly connected to the stop block, and the other end of the return spring along the second direction is fixedly connected to the first cylinder body.

[0014] The material roll changing device provided in the embodiments of the present invention includes a clamping member; a receiving groove is provided on the outer surface of the contouring part and on at least one side of the rolling member; the clamping member includes a clamping block, which is configured to be driven to extend out of the contouring part along the radial direction and protrude from the contouring part or retract and be received in the receiving groove.

[0015] The material roll changing device provided in the embodiments of the present invention includes a tensioning member further comprising a second cylinder disposed inside the main body; one end of the tensioning block slidably extends out of the second cylinder along the radial direction of the contoured portion, and the other end of the tensioning block is located inside the second cylinder; the interior of the second cylinder is divided into a second rod-type cavity and a second rodless cavity by the tensioning block; the second cylinder is provided with a second air inlet communicating with the second rod-type cavity and a third air inlet communicating with the second rodless cavity.

[0016] The material roll changing device provided in the embodiments of the present invention further includes a pusher component in the clamp;

[0017] The main body has a fixed end disposed opposite to the docking end along the first direction, and the fixed end is fixed to the mounting base; the pusher includes a pusher plate and a telescopic driver, and the telescopic driver is fixed to the mounting base; the telescopic driver has a telescopic end that extends and retracts along the first direction; the telescopic end is connected to a pusher plate for pushing the drum to move along the first direction.

[0018] The roll changing device provided in the embodiments of the present invention further includes an OHT transport vehicle, which is connected to a mounting base via a connecting column; the mounting base is provided with the clamp on at least one side along the first direction.

[0019] The material roll changing device provided in this invention includes clamps on both sides of the mounting base along the first direction; a first gear is provided between the connecting column and the mounting base; one end of the first gear along a third direction is rotatably connected to the connecting column, and the other end of the first gear along the third direction is fixedly connected to the mounting base; the first gear meshes with a second gear; one end of the second gear along the third direction is rotatably connected to the mounting base; the other end of the second gear along the third direction is fixedly connected to the driving end of a rotary driver, and the rotary driver is fixed to the mounting base; the third direction and the gravity direction are parallel to each other.

[0020] The material roll changing device provided by the present invention solves the problem of low error tolerance and easy jamming or sticking due to processing errors during roll handling. By using the irregular shape of the fixture body, the device can fully accommodate the processing errors of the fixture, roll and equipment shaft, greatly reduce the risk of jamming, significantly improve the docking success rate, and effectively prevent roll deformation, electrode breakage or scratches. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 This is a schematic diagram of the existing technology where the reel is sleeved on the fixture.

[0023] Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the existing clamp and drum.

[0024] Figure 3 This is a schematic diagram of the material roll changing device in an embodiment of the present invention.

[0025] Figure 4 This is a top view of the roll changing device in an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the internal structure of the clamp of the roll changing device in an embodiment of the present invention.

[0027] Figure 6 yes Figure 5 Enlarged schematic diagram of the interior of the clamp.

[0028] Figure 7 This is a cross-sectional schematic diagram of the clamp and the drum in an embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram of the stop component in an embodiment of the present invention.

[0030] Figure 9 yes Figure 8 The isometric cross-sectional view of the stop shown is illustrated.

[0031] Figure 10 yes Figure 8 The stop shown is a cross-sectional view.

[0032] Figure 11 This is a schematic diagram of the tensioning component in an embodiment of the present invention.

[0033] Figure 12 yes Figure 11 The tensioning assembly shown is an isometric sectional view along the A-A' direction.

[0034] Figure 13 yes Figure 11 The tensioning assembly shown is an isometric sectional view along the B-B' direction.

[0035] Figure 14 yes Figure 11 The diagram shows the structure of the tensioning component from another angle.

[0036] Figure 15 This is a schematic diagram of the cache rack structure in an embodiment of the present invention.

[0037] Figure 16 This is a schematic diagram of the structure of the device shaft in an embodiment of the present invention.

[0038] The above figures include the following reference numerals:

[0039] 1. Fixture; 10. Main body; 11. Rolling element; 12. Contouring part; 1201. Arc surface; 13. Irregularly shaped part; 1301. First plane; 1302. Second plane; 1303. Third plane; 14. Connecting end; 15. Fixed end; 2. Drum; 21. Gap; 22. Buffer rack; 23. Equipment shaft; 3. Stop; 31. Stop block; 32. First cylinder; 3201. First rod-mounted chamber; 3202. First rodless chamber; 33. First air inlet; 34. Return spring; 35. 1. First slide rail; 36. First slider; 4. Tensioner; 41. Receiving groove; 42. Tensioner block; 43. Second cylinder; 4301. Second rod-mounted chamber; 4302. Second rodless chamber; 44. Second air inlet; 45. Third air inlet; 46. Second slide rail; 47. Second slider; 5. Pusher; 51. Pusher plate; 52. Telescopic actuator; 5201. Telescopic end; 6. Mounting base; 7. Connecting column; 81. First gear; 82. Second gear; 83. Rotary actuator; 9. Sensor. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all 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. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0043] In the production of battery electrodes, refer to Figure 1 and Figure 2As shown, the material roll is the rolled material wound on the drum 2. The drum 2 serves as a support carrier for winding and storing the material roll. The material roll and the drum 2 together form a unit that can be transferred between the take-up shaft of the roller press and the buffer frame 22. When the drum 2 is full of material rolls, it is a full roll; when the drum 2 is empty, it is an empty roll. The replacement of the material roll requires the cooperation of the drum 2 with the clamps, roller press, etc.

[0044] As a core rolling equipment, the continuity of the winding process in a roller press directly determines the efficiency and quality of electrode production. Existing roller presses employ a dual-shaft structure. When the lower winding shaft is full of electrode material of a preset length or diameter, it must quickly switch to the upper empty winding shaft to continue winding. Simultaneously, the fully loaded lower shaft is transferred away, and an empty upper shaft is replenished. This process is known as the "full lower, empty upper" task of the roller press. The roller press avoids production stoppages caused by stopping to change rolls after a single shaft is full through the alternating dual-shaft working mode. In addition to the "full lower, empty upper" task, changing the type, batch, and specification of production materials also involves changing the material rolls and drums.

[0045] Currently, material transfer on the roller press shaft is achieved by manually pushing an Overhead Hoist Transport (OHT) trolley or automatically loading and unloading material using an automated OHT trolley, thus completing the "full bottom, empty top" task. Both manual and automated pushing involve the docking of the clamping shaft with the roller press shaft, and the transfer of the drum 2 between the clamping shaft and the roller press shaft. (Refer to...) Figure 1 and Figure 2 As shown, in the related technology, the clamp shaft and the drum 2 are configured to conform to each other, and the drum 2 is sleeved on the outer periphery of the clamp shaft; the drum 2 is transferred by the clamp shaft to the roller press shaft.

[0046] Due to factors such as processing errors, there may be dimensional deviations between the roller press roll and the clamping shaft. This can cause the roll 2 to easily jam or get stuck with the clamping shaft when the roller press roll is pushed onto the OHT transport vehicle. When the roll 2 has dimensional errors due to processing, the inner wall of the roll 2 is also prone to jamming or getting stuck with the clamping shaft during transfer, causing the roll 2 to be pushed out by the OHT transport vehicle and damaging the material roll.

[0047] Therefore, referring to Figures 3 to 14 As shown, this embodiment of the invention provides a material roll changing device, which includes a clamp 1 and an OHT transport vehicle. The clamp 1 is configured to engage with the roll 2. This embodiment of the invention, by setting the clamp 1 to fully accommodate the processing errors of the clamp 1, the roll 2, and the equipment shaft 23, significantly reduces the risk of jamming or sticking, and significantly improves the docking success rate, enabling smooth docking of parts from different batches with processing errors. The increased docking tolerance reduces the risk of material roll damage and roll 2 impact damage.

[0048] Specifically, the clamp 1 is used to engage with the drum 2 to support and position the drum 2. The clamp 1 includes a main body 10 and a rolling element 11. The main body 10 includes a contoured part 12 and a non-conforming part 13, which are connected end to end as a single unit. The contoured part 12 supports the drum 2 and guides its movement. Its outer surface is designed to conform to the inner wall of the drum 2, providing uniform support and preventing the drum 2 from tilting or deforming. The non-conforming part 13 is configured with a gap 21 between it and the drum 2. Through a structural design different from that of the contoured part 12, it accommodates machining errors and avoids rigid collisions or jamming due to dimensional deviations during docking.

[0049] Furthermore, the rolling element 11 is movably disposed on the contouring section 12. The rolling element 11 is configured to support the drum 2 along the direction of gravity to prevent tipping or deviation, and to drive the drum 2 to move along a first direction. The first direction is the axial direction of the contouring section 12. The rolling element 11 on the contouring section 12 directly contacts the inner wall of the drum 2, converting the sliding friction during movement into rolling friction. By utilizing the rolling characteristics, frictional resistance is greatly reduced, thereby ensuring that the drum 2 remains smooth when pushed, sliding steadily along the axis without jamming due to excessive friction.

[0050] Specifically, the rolling element 11 is a ball, and the contouring part 12 is provided with multiple rows of balls. The multiple rows of balls are equally spaced along the circumference. Each row of balls includes multiple balls spaced along a first direction. A part of the ball is embedded in the contouring part 12, and the other part of the ball protrudes from the surface of the contouring part 12. The ball is rotatably disposed in the contouring part 12.

[0051] In this embodiment of the invention, the contouring part 12 has an arc-shaped surface 1201. The irregularly shaped part 13 has a second plane 1302, a third plane 1303, and a first plane 1301. The arc surface 1201, the second plane 1302, the first plane 1301, and the third plane 1303 are connected end to end to form a single unit. The shortest distance from the center of the arc surface 1201 to the first plane 1301 is less than the radius of the arc surface 1201.

[0052] The contour of the arc surface 1201 matches the arc contour of the inner wall of the drum 2, achieving a good fit and providing stable support for the drum 2. To enable the main body 10 of the clamp 1 to dock with the drum 2, in the radial section of the main body 10, the irregular portion 13 is located within the circumferential section of the arc surface 1201 of the contour portion 12, and does not extend beyond the circumferential contour or the circumferential section. The shortest distance from the center of the arc surface 1201 to the first plane 1301 is less than the radius of the arc surface 1201. Therefore, in terms of spatial structure, the gap 21 formed between the second plane 1302, the third plane 1303, and the first plane 1301 of the irregular portion 13 and the inner wall of the drum 2 is significantly larger than the distance between the arc surface 1201 of the contour portion 12 and the inner wall of the drum 2. This structural design allows the irregular part 13 to provide greater room for the machining errors of the clamp 1, the drum 2 and the equipment shaft 23, avoiding rigid collisions or interference fits caused by dimensional deviations, further improving the fault tolerance rate of the docking process and reducing the occurrence of jamming or stuck phenomena.

[0053] Next, the arc surface 1201 and the first plane 1301 are arranged sequentially along the direction of gravity. In a natural placement state without external interference, the arc surface 1201 of the contouring part 12 will abut against the inner wall of the drum 2 through the rolling element 11, and will support the drum 2 by virtue of the adaptability of the arc contour to the drum 2. The first plane 1301 located below maintains a certain distance from the inner wall of the drum 2 and does not contact the drum 2. On the one hand, it will not hinder the fitting support of the arc surface 1201, and will not affect the movement of the drum 2 along the first direction due to contact friction; on the other hand, the gap 21 between the first plane 1301 and the drum 2 provides room for the machining errors of the drum 2, the fixture 1 and the equipment shaft 23, avoiding rigid collision between the lower structure and the drum 2 due to dimensional deviations, and further improving the smoothness of the placement of the drum 2 and subsequent operations.

[0054] Next, the contouring part 12 is configured as a superior arc surface. Compared to a semi-circular or inferior arc surface, it significantly expands the contact range with the inner wall of the roll 2, resulting in a larger contact area. This allows the weight of the roll 2 to be evenly distributed on the surface of the contouring part 12, avoiding localized stress concentration that could lead to deformation of the roll 2; for heavy full rolls, it effectively reduces indentations or deformations caused by localized pressure. Simultaneously, the superior arc surface also enhances the support stability of the clamp 1 on the roll 2, reducing the risk of tilting or shifting during transport or docking, ensuring the coaxiality of the roll 2 and the clamp 1, and facilitating subsequent docking with the equipment shaft 23. Furthermore, the larger contact area between the curved surface and the drum 2, combined with the rolling characteristics of the rolling element 11, can further reduce the frictional resistance between the drum 2 and the contour part 12, making the drum 2 move more smoothly along the axial direction. Even when facing a drum 2 with slight machining errors, it can avoid jamming caused by excessive local friction, while reducing wear on the inner wall of the drum 2, extending the service life of the drum, and avoiding problems such as electrode breakage and scratches caused by shaking or friction damage of the drum 2.

[0055] Furthermore, the joints between the planes of the irregularly shaped part 13 are all provided with rounded chamfers. (See reference...) Figures 5 to 7 As shown, the connection points of the first plane 1301 and the second plane 1302, as well as the connection points of the first plane 1301 and the third plane 1303, are all provided with rounded chamfers. Eliminating the sharp edges and corners of the irregularly shaped portion 13 prevents scratches on the inner wall of the drum 2 or the electrode sheets, and also avoids the drum 2 being stuck by the edges and corners during movement. Even if the drum 2 has slight processing deviations, it can smoothly pass through the area of ​​the irregularly shaped portion 13, ensuring a stable and smooth docking process.

[0056] As an example, the relevant technical reference Figure 2 As shown, the inner diameter of drum 2 is D1 = 204 mm; the outer diameter of the fixture shaft in the contouring area outside the balls is D2 = 197 mm; the ball height is 3.5 mm. When the upper ball of the fixture shaft is aligned with the upper surface, it is considered a normal fit. The distance d1 between the area below without balls and drum 2 is the ball height, which is 3.5 mm. When the inner diameter of the fixture shaft exceeds the standard range, or / and the inner diameter of drum 2 is less than the standard range, an interference fit will occur. Pushing drum 2 towards the fixture shaft will cause drum 2 to jam or become stuck. Similarly, when the inner diameter of the roller press shaft exceeds the standard range, or / and the inner diameter of drum 2 is less than the standard range, an interference fit will occur. Pushing drum 2 towards the roller press shaft will cause drum 2 to jam or become stuck.

[0057] Reference Figure 7The diagram shows a cross-sectional view of the clamp 1 and the drum 2 in this embodiment of the invention. The inner diameter of the drum 2 is D1 = 204 mm; the outer diameter of the contour part 12 is D3 = 197 mm; and the height of the rolling element 11 is D4 = 3.5 mm. When the upper ball bearing of the clamp 1 abuts against the inner wall of the drum 2, it is considered a normal connection. The minimum gap below is d2 = 8.3 mm, compared to... Figure 2 The traditional clamp shaft d1 is 4.8mm longer, which means that under the same load strength, the tolerance for machining errors of the drum 2, the clamp 1, and the equipment shaft 23 is higher. Even with slight dimensional deviations, it can be successfully docked, thus improving the success rate of docking the drum 2.

[0058] In related technologies, when pushing empty or full rolls onto the clamping shaft, the empty or full rolls will move forward due to inertia, causing the roll 2 to frequently fail to stop at the preset position during transport, ultimately resulting in placement failure of the roll 2. Based on this, in the roll changing device provided in this embodiment of the present invention, the clamping device 1 further includes a stop 3. The main body 10 has a docking end 14 along a first direction for docking with components such as the equipment shaft 23 or the buffer rack 22. The stop 3 is disposed at the docking end 14 to limit the roll 2, improving placement accuracy and handling success rate.

[0059] Specifically, refer to Figure 3 , Figure 5 and Figures 8 to 10 As shown, the stop member 3 includes a stop block 31, which is telescopically disposed on the contoured portion 12 along a second direction. The stop block 31 is configured to extend outward and protrude from the rolling member 11 or retract and be lower than the rolling member 11. The first direction and the second direction intersect. When the stop block 31 is retracted and lower than the rolling member 11, it facilitates the rolling member 11 in supporting the movement of the drum 2 along the first direction, avoids interference with the movement process, and provides clearance for the drum 2. When the stop block 31 extends outward and protrudes from the rolling member 11, it limits the movement of the drum 2 and prevents the drum 2 from sliding due to inertia.

[0060] Furthermore, referring to Figure 9 and Figure 10As shown, the stop 3 also includes a first cylinder 32 fixed inside the main body 10. Along the second direction, one end of the stop block 31 slidably extends out of the first cylinder 32, and the other end of the stop block 31 is located inside the first cylinder 32. The interior of the first cylinder 32 is divided by the stop block 31 into a first rod-side cavity 3201 and a first rodless cavity 3202. The first cylinder 32 is provided with a first air inlet 33 communicating with the first rodless cavity 3202. A return spring 34 is provided inside the first rodless cavity 3202. One end of the return spring 34 along the second direction is fixedly connected to the stop block 31, and the other end of the return spring 34 along the second direction is fixedly connected to the first cylinder 32. A first slide rail 35 is also provided inside the first cylinder 32, extending along the second direction. The stop block 31 has a first slider 36 that cooperates with the first slide rail 35.

[0061] When the stop block 3 needs to perform its stopping and limiting functions, compressed gas is introduced into the first cylinder 32 through the air pipe via the first air inlet 33. The change in air pressure pushes the stop block 31 to move away from the first air inlet 33. The first slide rail 35 and the first slider 36 cooperate to move the stop block 31 along the second direction and extend it out of the first cylinder, further protruding from the rolling element 11.

[0062] When the stop 3 needs to be released from its limit or the stop is terminated, the air supply to the first air inlet 33 is stopped. The stop block 31 falls back under the action of gravity, and the first slider 36 slides back to its original position along the first slide rail 35. In addition to the action of gravity, the end of the return spring 34 that is fixedly connected to the stop block 31 also pulls the stop block 31 back to its original position through elastic force, and the stop block 31 is lower than the rolling element 11 and further retracts.

[0063] Specifically, refer to Figure 3 and Figure 5 As shown, the roll changing device is also equipped with a sensor 9. The sensor 9 is embedded inside the main body 10 of the clamp 1 and is located on the side of the stop block 31 away from the end face of the main body 10 in the first direction. The sensor 9 is a fiber optic sensor, and the contour part 12 is provided with a through hole for the fiber optic sensor to emit light from inside the main body 10 outwards.

[0064] Two sets of sensors 9 are preferably provided, which can efficiently identify the position of the drum 2 and also prevent the failure of a single sensor through redundancy. The optical fiber is installed above the clamp 1 for easy observation of the position and operation logic of the optical fiber sensor. When pushing the empty drum 2 back, the empty drum 2 may be pushed out inertia, causing positional deviation and affecting subsequent docking. Therefore, the sensor 9 is installed on one side of the stop block 31, and the sensor 9 is close to the stop block 31 along the first direction, and the distance between the two does not affect the placement position of the drum 2.

[0065] The roll 2 has a certain length along the first direction, and it is prone to tilting at one end, affecting the docking accuracy and causing errors. To address this, the roll changing device provided in this embodiment of the invention includes a tensioning element 4 in the clamp 1. The tensioning element 4 extends along the radial direction of the contoured portion 12, and is used to tension the roll 2 to radially fix it, preventing movement or wobbling during docking, ensuring the coaxiality of the roll 2 and the clamp 1, and improving docking accuracy. When it is necessary to release the roll 2, the tensioning block 42 retracts into the receiving groove 41, without obstructing the roll 2 from disengaging.

[0066] Specifically, refer to Figure 3 As shown, a receiving groove 41 is provided on the outer surface of the contouring portion 12 and on at least one side of the rolling element 11. The tensioning element 4 includes a tensioning block 42, which is configured to be driven to extend outward along the radial direction of the contouring portion 12 and protrude from the contouring portion 12 or retract and be received within the receiving groove 41. The contouring portion 12 is configured as an arc surface 1201 with a superior arc, which can provide space for the layout of the receiving groove 41 and the rolling element 11, and reduce the impact on the support of the drum 2 while providing the receiving groove 41.

[0067] Reference Figures 11 to 14 As shown, the tensioning member 4 also includes a second cylinder 43 disposed inside the main body 10. One end of the tensioning block 42 slidably extends out of the second cylinder 43 along the radial direction of the contouring portion 12, while the other end of the tensioning block 42 is located inside the second cylinder 43. The interior of the second cylinder 43 is divided by the tensioning block 42 into a second rod-side cavity 4301 and a second rodless cavity 4302. The second cylinder 43 is provided with a second air inlet 44 communicating with the second rod-side cavity 4301 and a third air inlet 45 communicating with the second rodless cavity 4302. The tensioning member 4 also includes a second slide rail 46 and a second slider 47. The second slide rail 46 is disposed inside the second cylinder 43 and extends radially along the contouring portion 12. The second slider 47 is fixed to the tensioning block 42 and slidably connected to the second slide rail 46.

[0068] When the tensioner 4 needs to tighten the inner wall of the drum 2, compressed gas is introduced into the second rodless chamber 4302 through the third air inlet 45 via the air pipe. The change in air pressure in the second rodless chamber 4302 pushes the tensioner block 42 to move away from the third air inlet 45. The tensioner block 42 is moved along the radial direction of the contoured part 12 and extends out of the contoured part 12 by the cooperation of the second slide rail 46 and the second slider 47, protruding to tighten the drum 2.

[0069] When the tensioner 4 needs to release the tension on the inner wall of the drum 2, compressed gas is introduced into the second rod chamber 4301 through the second air inlet 44 via the air pipe. The change in air pressure in the second rod chamber 4301 pushes the tensioner block 42 to move away from the second air inlet 44. The tensioner block 42 is moved along the radial direction of the contoured part 12 and retracted into the receiving groove 41 by the cooperation of the second slide rail 46 and the second slider 47, thus releasing the tension on the drum 2.

[0070] Compared to other reset methods, bidirectional pneumatic drive is faster and more stable, which can avoid reset failure caused by workpiece fatigue and ensure reliable tensioning and releasing actions.

[0071] Preferably, the outer surface of the contouring part 12 is provided with receiving grooves 41 on both sides of the rolling element 11, and each receiving groove 41 is provided with a tensioning element 4. Simultaneous tensioning of the drum 2 from both sides can ensure the horizontality and tension of the drum 2. When connecting the air source, the second air inlet 44 of the tensioning elements 4 on both sides is connected to the same air source, and the third air inlet 45 of the tensioning elements 4 on both sides is connected to the same air source, so as to control the synchronous tensioning or synchronous release of both sides.

[0072] Specifically, refer to Figure 3 and Figure 4 As shown, the main body 10 of the clamp 1 has a fixed end 15 disposed opposite to the docking end 14 along the first direction, and the fixed end 15 is fixed to the mounting base 6. The mounting base 6 provides stable support for the clamp 1 and prevents the clamp 1 from shifting or shaking when pushing the drum 2. The clamp 1 also includes a pusher 5. The pusher 5 includes a pusher plate 51 and a telescopic actuator 52, and the telescopic actuator 52 is fixed to the mounting base 6; the telescopic actuator 52 has a telescopic end 5201 that extends and retracts along the first direction; the telescopic end 5201 is connected to the pusher plate 51 for pushing the drum 2 to move along the first direction.

[0073] The orthographic projection of the pusher plate 51 along the first direction overlaps with that of the drum 2, and the orthographic projection of the pusher plate 51 is outside the main body 10 of the clamp 1. The pusher plate 51 can push the drum 2 without interfering with the main body 10, thus avoiding friction and damage. The pusher plate 51 is preferably configured as a plate parallel to the radial section of the contouring part 12, or a plate parallel to the end face of the drum 2, to increase the contact area with the drum 2, avoid excessive local force that could cause deformation of the drum 2, and ensure that the movement direction of the drum 2 is completely consistent with the axis, thereby improving docking accuracy and reducing errors. The telescopic actuator 52 can be configured as a servo electric cylinder.

[0074] Furthermore, the mounting base 6 is provided with a clamp 1 on at least one side along the first direction. (Refer to...) Figure 3 and Figure 4 As shown, two clamps 1 are preferably provided. The fixed end 15 of the clamp 1 is connected to the mounting base 6 at a position opposite to each other along the first direction. Both clamps 1 are collinear and along the first direction. By rotating the mounting base 6, different clamps 1 can be adjusted to operate sequentially, which can simultaneously carry full and empty rolls, reducing the number of trips of the OHT transport vehicle and improving handling efficiency. The pusher 5 is correspondingly provided to the clamp 1. When there are two clamps 1, the pusher 5 is located on both sides of the mounting base 6. The pusher plates 51 corresponding to the two clamps 1 are set back to back to push the roll 2 on the corresponding clamp 1.

[0075] Furthermore, the coil changing device also includes an OHT transport vehicle, which is connected to the mounting base 6 via a connecting column 7. A first gear 81 is disposed between the connecting column 7 and the mounting base 6. One end of the first gear 81 along the third direction is rotatably connected to the connecting column 7, and the other end of the first gear 81 along the third direction is fixedly connected to the mounting base 6. The first gear 81 meshes with a second gear 82. One end of the second gear 82 along the third direction is rotatably connected to the mounting base 6, and the other end of the second gear 82 along the third direction is fixedly connected to the drive end of a rotary driver 83, which is fixed to the mounting base 6. The third direction is parallel to the direction of gravity.

[0076] For example, both the first gear 81 and the second gear 82 are shaft gears, including a gear portion and two shaft portions located on opposite sides of the gear portion along a third direction; of the two shaft portions of the first gear 81, one is rotatably connected to the connecting column 7, and the other is fixedly connected to the mounting base 6; the gear portion of the first gear 81 and the gear portion of the second gear 82 mesh; of the two shaft portions of the second gear 82, one is rotatably connected to the mounting base 6, and the other is fixedly connected to the drive end of the rotary driver 83; the rotary driver 83 is a motor.

[0077] It should be noted that when the arc surface 1201 of the contouring part 12 is positioned opposite the first plane 1301 along the direction of gravity, and the stop block 31 is positioned at the highest point of the arc surface 1201, the extension and retraction direction of the stop block 31 is the radial direction passing through the highest point, which is parallel to the direction of gravity. That is, at this time, the second direction is parallel to the third direction. When the arc surface 1201 of the contouring part 12 is positioned opposite the first plane 1301 along the direction of gravity, and the stop block 31 is not positioned at the highest point of the arc surface 1201, the second direction intersects with the third direction.

[0078] The OHT transporter, connected to the mounting base 6 via the connecting column 7, can transport the mounting base 6, the clamp 1 fixed on the mounting base 6, and the roll 2 on the clamp 1 as a whole. The entire device moves between stations such as the roller press and the buffer rack 22, achieving fully automated transfer, replacing manual operation, greatly improving efficiency, and reducing errors and safety risks caused by manual intervention.

[0079] When it is necessary to adjust the orientation of the fixture 1 to connect to different layout workstations, the rotary driver 83 drives the second gear 82 to rotate, which in turn drives the first gear 81 to rotate through meshing, thereby driving the mounting base 6 to rotate around a third direction. This eliminates the need to move the entire OHT transport vehicle, improving operational flexibility and ensuring accurate docking after the fixture 1 rotates.

[0080] Reference Figures 3 to 16 As shown, the working principle of the material roll changing device provided in this embodiment of the present invention is as follows:

[0081] During the empty roll retrieval stage of the roll changeover, the OHT transport vehicle moves the mounting base 6 to the empty roll buffer rack 22 position. The rotary driver 83 adjusts the angle so that the docking end 14 of one side clamp 1 is aligned with the buffer rack 22. At this time, the stop block 31 and tension block 42 of the clamp 1 on that side retract. After the empty roll is pushed in, the tension block 42 extends and is fixed, and the stop block 31 extends and is limited. The OHT transport vehicle is then lifted and withdrawn from the buffer rack 22.

[0082] During the full roll removal stage of the material roll change, the OHT transport vehicle moves the mounting base 6 and clamp 1 to the roller press station. The rotary drive 83 adjusts the angle and rotates 180° so that the docking end 14 of the other clamp 1 is aligned with the full roll of the equipment shaft 23, waiting for the equipment shaft 23 to push the material. At this time, the stop block 31 and tension block 42 of the clamp 1 on this side retract. After the material is fully pushed, the equipment shaft 23 retracts, and the pusher plate 51 pushes the roll 2 until the sensor 9 recognizes the roll 2, at which point the pusher 5 stops moving. The stop block 31 extends to limit the movement, and the tension block 42 extends to fix it.

[0083] During the empty roll loading stage of the material roll replacement, the OHT transport vehicle drives the mounting base 6 to load the empty roll taken from the buffer rack 22 into the equipment shaft 23, rotates 180° to align the empty roll side clamp 1 with the equipment shaft 23, the stop block 31 retracts, the pusher plate 51 pushes the empty roll into the equipment shaft 23, and the tension block 42 retracts.

[0084] During the full roll storage stage of the roll replacement, the OHT transport vehicle moves the device to the buffer rack 22, the stop block 31 and tension block 42 retract, and the pusher plate 51 pushes the full roll taken from the roller press station into the buffer rack 22 to complete the replacement.

[0085] The material roll changing device provided in this embodiment of the utility model increases the redundancy error of the gap 21 by setting the contouring part 12 and the irregular part 13 of the clamp 1. It can accommodate the error generated by the Z-axis lifting and walking of the OHT transport vehicle, and / or the processing error of the roll 2, the clamp 1, and the equipment shaft 23. Within the error range, even if the roll 2 is not on the upper horizontal line of the clamp 1 or the equipment shaft 23, the roll 2 can be continuously pushed, and the roll 2 will not get stuck due to the drop of the upper surface, ensuring the docking efficiency of the clamp 1 and the equipment shaft 23 and improving the fault tolerance rate. It avoids the additional mechanical impact force generated by jamming or stuck, which would cause the roll 2 to deform and be ejected, or the electrode material to be broken or scratched, affecting the docking efficiency and production rhythm.

[0086] Furthermore, the material roll changing device is equipped with rolling elements 11 to reduce friction, rounded chamfers to prevent scratches, and a pusher plate 51 to increase the contact area, effectively preventing deformation of the roll 2, breakage or scratches of the electrode sheets, ensuring material quality, and reducing production cost waste. Regarding improved positioning and fixing accuracy, the stop element 3 limits the roll 2, and the tensioning element 4 ensures radial stability of the roll 2, reducing offset during transport and docking, and improving overall docking accuracy; the stop element 3 works in conjunction with the sensor 9 for even higher positioning accuracy. In terms of automation and efficiency, the OHT transport vehicle achieves fully automated transport, significantly improving production efficiency, reducing labor costs, adapting to long-term continuous production needs, and reducing equipment maintenance frequency and costs.

[0087] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0088] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0089] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A material roll changing device, characterized in that, include The clamp (1) is configured to engage with the drum (2); The clamp (1) includes a main body (10) and a rolling element (11). The main body (10) includes a contouring part (12) and a non-conforming part (13). The contouring part (12) and the non-conforming part (13) are connected end to end to form a whole. The rolling element (11) is movably disposed on the contouring part (12). The rolling element (11) is configured to support the drum (2) along the direction of gravity and to drive the drum (2) to move along the first direction. The irregular part (13) is configured to have a gap (21) between it and the drum (2). The first direction is the axial direction of the contouring part (12).

2. The roll changing device according to claim 1, characterized in that, The contouring part (12) has an arc surface (1201) in the shape of an arc; the irregular part (13) has a second plane (1302), a third plane (1303) and a first plane (1301), the arc surface (1201), the second plane (1302), the first plane (1301) and the third plane (1303) are connected end to end to form a whole; wherein, the arc surface (1201) and the first plane (1301) are arranged sequentially along the direction of gravity; the shortest distance from the center of the arc surface (1201) to the first plane (1301) is less than the radius of the arc surface (1201).

3. The roll changing device according to claim 2, characterized in that, The connection between the first plane (1301) and the second plane (1302), as well as the connection between the first plane (1301) and the third plane (1303), are all provided with rounded chamfers.

4. The roll changing device according to claim 1, characterized in that, The clamp (1) further includes a stop (3), the main body (10) has a mating end (14) along a first direction; the stop (3) is disposed at the mating end (14); the stop (3) includes a stop block (31), the stop block (31) is telescopically disposed on the contour part (12) along a second direction, the stop block (31) is configured to extend and protrude from the rolling element (11) or retract and be lower than the rolling element (11); the first direction and the second direction intersect.

5. The roll changing device according to claim 4, characterized in that, The stop (3) also includes a first cylinder (32) fixed inside the main body (10); Along the second direction, one end of the stop block (31) extends slidably out of the first cylinder body (32), and the other end of the stop block (31) is located inside the first cylinder body (32); the interior of the first cylinder body (32) is divided into a first rod chamber (3201) and a first rodless chamber (3202) by the stop block (31); the first cylinder body (32) is provided with a first air inlet (33) communicating with the first rodless chamber (3202); a return spring (34) is provided in the first rodless chamber (3202), one end of the return spring (34) along the second direction is fixedly connected to the stop block (31), and the other end of the return spring (34) along the second direction is fixedly connected to the first cylinder body (32).

6. The roll changing device according to claim 1, characterized in that, The clamp (1) further includes a tensioner (4); a receiving groove (41) is provided on the outer surface of the contour part (12) and on at least one side of the rolling member (11), the tensioner (4) includes a tensioning block (42), the tensioning block (42) is configured to be driven to extend along the radial direction of the contour part (12) and protrude from the contour part (12) or retract and be received in the receiving groove (41).

7. The roll changing device according to claim 6, characterized in that, The tensioning member (4) further includes a second cylinder (43) disposed inside the main body (10); along the radial direction of the contoured part (12), one end of the tensioning block (42) extends slidably out of the second cylinder (43), and the other end of the tensioning block (42) is located inside the second cylinder (43); the interior of the second cylinder (43) is divided into a second rod chamber (4301) and a second rodless chamber (4302) by the tensioning block (42); the second cylinder (43) is provided with a second air inlet (44) communicating with the second rod chamber (4301) and a third air inlet (45) communicating with the second rodless chamber (4302).

8. The roll changing device according to claim 1, characterized in that, The clamp (1) also includes a pusher (5); The main body (10) has a fixed end (15) disposed opposite to the docking end (14) along the first direction, and the fixed end (15) is fixed to the mounting base (6); the pusher (5) includes a pusher plate (51) and a telescopic driver (52), and the telescopic driver (52) is fixed to the mounting base (6); the telescopic driver (52) has a telescopic end (5201) that extends and retracts along the first direction; the telescopic end (5201) is connected to the pusher plate (51) for pushing the drum (2) to move along the first direction.

9. The roll changing device according to any one of claims 1 to 8, characterized in that, It also includes an OHT transport vehicle, which is connected by a connecting column (7) and a mounting base (6); the mounting base (6) is provided with the clamp (1) on at least one side along the first direction.

10. The roll changing device according to claim 9, characterized in that, The mounting base (6) is provided with clamps (1) on both sides along the first direction; a first gear (81) is provided between the connecting column (7) and the mounting base (6); one end of the first gear (81) along the third direction is rotatably connected to the connecting column (7), and the other end of the first gear (81) along the third direction is fixedly connected to the mounting base (6); the first gear (81) meshes with the second gear (82); one end of the second gear (82) along the third direction is rotatably connected to the mounting base (6); the other end of the second gear (82) along the third direction is fixedly connected to the driving end of the rotary driver (83), and the rotary driver (83) is fixed to the mounting base (6); the third direction and the gravity direction are parallel to each other.

Images