Unwinding equipment
By designing an unwinding device that allows for non-stop roll changing, and utilizing a turret mechanism and a cutting mechanism to achieve automatic roll changing, the problem of frequent shutdowns in existing equipment has been solved, improving production efficiency and product quality consistency.
Patent Information
- Application Number
- CN202423148733.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Existing manual unwinding equipment suffers from frequent shutdowns, resulting in low production efficiency, high labor intensity, operator fatigue, and negatively impacting production stability and product quality.
Design a non-stop unwinding device that uses a turret mechanism, a cutting mechanism, and a conveying mechanism. The turret mechanism rotates to achieve automatic roll changing, and pressure rollers and cutters are used for bonding and cutting. Combined with a roll diameter detector and tension rollers, it ensures accurate docking and stable conveying.
It achieves an efficient and automated tape changeover process, reduces labor intensity, ensures production continuity and product quality consistency, and is suitable for large-scale continuous production.
Smart Images
Figure CN223645915U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery production, and in particular to an unwinding device. Background Technology
[0002] Unwinding equipment is a widely used mechanical device in lithium battery production. Current manual unwinding equipment requires frequent shutdowns for operation, which is not only inefficient but also labor-intensive and demands high skill levels from operators. Under prolonged continuous operation, operators are prone to fatigue and operational errors, thus affecting production stability and product quality. Utility Model Content
[0003] In order to overcome the shortcomings of the existing technology, this utility model provides an unwinding device that allows for non-stop roll changing.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] An unwinding device, comprising:
[0006] A frame and a turret mechanism, a cutting mechanism, and a conveying mechanism mounted on the frame;
[0007] The turret mechanism is rotatable relative to the frame and has a first unwinding section and a second unwinding section. The first unwinding section is used to install a first roll, and the second unwinding section is used to install a second roll. The first roll is output through the conveying mechanism, and the second roll is provided with an adhesive section.
[0008] The cutting mechanism includes a drive unit, a pressure roller, and a cutter.
[0009] When changing rolls, the turret mechanism rotates, moving the second unwinding section between the first unwinding section and the conveying mechanism. The drive unit drives the cutting mechanism to move. The pressure roller is located between the first unwinding section and the conveying mechanism and is used to move the first roll towards the second unwinding section so that the adhesive part of the first roll and the second roll come into contact and bond. The cutter is used to cut the first roll connecting the first unwinding section and the second unwinding section.
[0010] Furthermore, the turret mechanism includes a first rotating arm and a second rotating arm that are fixedly arranged in a cross configuration;
[0011] The first rotating arm has a first unwinding section and a second unwinding section at both ends, and the second rotating arm has a first guide roller and a second guide roller at both ends.
[0012] When the turret mechanism rotates, the first guide roller and the second guide roller are used to adjust the adjustment path direction of the first or second tape, respectively.
[0013] Furthermore, the first and second spiral arms are perpendicular to each other.
[0014] Furthermore, the second rotating arm is equipped with a roll diameter detector for detecting the roll diameter of the first or second roll.
[0015] Furthermore, the cutting mechanism includes a third rotating arm, one end of which is rotatably connected to the frame, and the other end is provided with a cutter. The pressure roller is rotatably disposed in the middle of the third rotating arm, and the driving unit is connected to the third rotating arm in a transmission connection to drive the third rotating arm to swing toward the second unwinding unit.
[0016] Furthermore, the driving unit is a cylinder, the output end of the cylinder is movably connected to the third rotating arm, and the cylinder is hinged to the frame.
[0017] Furthermore, the pressure roller comprises, from the outside in, a sponge layer, a profile layer, and a shaft head.
[0018] Furthermore, the sponge layer is made of foamed EPDM rubber with a Shore hardness of 20-35°.
[0019] Furthermore, the adhesive material includes a paper substrate and acrylic adhesive.
[0020] Furthermore, the conveying mechanism also includes a tension roller and a swing roller;
[0021] The tension roller is used to detect the tension of the belt, and the swing roller is used to adjust the tension of the belt.
[0022] The beneficial effects of this utility model are:
[0023] This utility model discloses an unwinding device that achieves efficient roll changing and precise connection through the cooperation of a turret mechanism, a cutting mechanism, and a conveying mechanism. It can quickly move the second unwinding section to the working position and ensure stable connection of the roll through the synergistic action of the pressure roller and the cutter. The automated operation of the equipment reduces labor intensity and the risk of human error, maintains continuous operation of the production line, is suitable for large-scale continuous production, and ensures the consistency and stability of product quality. Attached Figure Description
[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0025] Figure 1 This is a schematic diagram of the unwinding structure of this utility model;
[0026] Figure 2 This is a schematic diagram of the roll-changing structure of this utility model - 1;
[0027] Figure 3 This is a schematic diagram of the roll-changing structure of this utility model - 2;
[0028] Figure 4 This is a schematic diagram of the structure of the pressure roller of this utility model.
[0029] in,
[0030] 100. Rack;
[0031] 200. Turret mechanism; 210. First swivel arm; 211. First unwinding section; 212. First belt winding; 213. Second unwinding section; 214. Second belt winding; 220. Second swivel arm; 221. First guide roller; 222. Second guide roller; 223. Roll diameter detector;
[0032] 300. Cutting mechanism; 310. Drive unit; 320. Third rotating arm; 330. Pressure roller; 331. Sponge layer; 332. Profile layer; 333. Shaft head; 340. Cutting blade;
[0033] 400. Conveying mechanism; 410. Tension roller; 420. Swing roller. Detailed Implementation
[0034] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.
[0035] Reference Figure 1 An unwinding device includes a frame 100 and a turret mechanism 200, a cutting mechanism 300 and a conveying mechanism 400 disposed on the frame 100.
[0036] The turret mechanism 200 is rotatable relative to the frame 100 and has a first unwinding section 211 and a second unwinding section 213. The first unwinding section 211 is used to install a first roll 212, and the second unwinding section 213 is used to install a second roll 214. The first roll 212 is output through the conveying mechanism 400, and the second roll 214 is provided with an adhesive portion. The cutting mechanism 300 includes a drive unit 310, a pressure roller 330, and a cutter 340. When changing rolls, the turret mechanism 200 rotates. The second unwinding section 213 is moved between the first unwinding section 211 and the conveying mechanism 400. The driving section 310 drives the cutting mechanism 300 to move. The pressure roller 330 is located between the first unwinding section 211 and the conveying mechanism 400 and is used to move the first roll 212 toward the second unwinding section 213 so that the adhesive part of the first roll 212 and the second roll 214 come into contact and bond. The cutter 340 is used to cut the first roll 212 connecting the first unwinding section 211 and the second unwinding section 213.
[0037] It is understandable that the rotation of the turret mechanism 200 allows for the switching between the first roll 212 and the second roll 214 for unwinding. When the first roll 212, which is in the unwinding state, is switched to the second roll 214, the turret mechanism 200 rotates, exchanging the positions of the first unwinding section 211 and the second unwinding section 213, causing the second unwinding section 213 to move to a position that cooperates with the conveyor mechanism 400, as shown in the reference. Figure 2 At this time, the pressure roller 330 presses the first roll 212 against the adhesive part of the second roll 214, causing them to contact and adhere. Simultaneously, the cutter 340 cuts the first roll 212 connecting the first unwinding part 211 and the second unwinding part 213, detaching it from the first unwinding part 211. (Refer to...) Figure 3 Subsequently, the first roll 212 continues to be pulled by the conveyor mechanism 400. Since the first roll 212 has been bonded to the adhesive part of the second roll 214, the first roll 212 will drive the second roll 214 into the conveyor mechanism 400, thereby realizing the switching of the first roll 212 and the second roll 214 and achieving the purpose of continuous unwinding.
[0038] In some embodiments, refer to Figure 1The turret mechanism 200 includes a first rotating arm 210 and a second rotating arm 220 fixedly arranged in a cross configuration. The first rotating arm 210 has a first unwinding section 211 and a second unwinding section 213 at both ends, and the second rotating arm 220 has a first guide roller 221 and a second guide roller 222 at both ends. When the turret mechanism 200 rotates, the first guide roller 221 and the second guide roller 222 are used to adjust the adjustment path direction of the first winding 212 or the second winding 214, respectively, to prevent the material from entering the middle and interfering with the parts in the middle during station changes. During unwinding, the first unwinding section 211 is located closer to the conveyor mechanism 400. When a rewind change is required, the first rotating arm 210 rotates 180° to move the second unwinding section 213 closer to the conveyor mechanism 400. At this time, the first guide roller 221 and the second guide roller 222 on the second rotating arm 220 are used to adjust the conveying direction of the first winding belt 212 or the second winding belt 214, respectively, so as to prevent the smooth switching and conveying of the winding belt during the winding process and to prevent the winding belt misalignment or poor conveying during the winding process.
[0039] Furthermore, there are two first guide rollers 221 and two second guide rollers 222. The two guide rollers can improve the positioning accuracy of the belt conveyor and ensure that the belt maintains a proper path during the conveying process without deviating or slipping.
[0040] In some embodiments, the first rotary arm 210 and the second rotary arm 220 are perpendicular to each other. By arranging them in a cross and perpendicular manner, the equipment space can be fully utilized, the layout of the unwinding section and the overwinding roller can be made more compact, the equipment floor area can be reduced, and a more flexible arrangement can be provided for the transport and rewinding of the tape.
[0041] In some embodiments, refer to Figure 1 The second rotary arm 220 is equipped with a roll diameter detector 223 for detecting the roll diameter of the first roll 212 or the second roll 214. By monitoring the roll diameter through the roll diameter detector 223, the remaining amount of roll can be accurately determined, thereby optimizing the timing of roll changes and avoiding production interruptions due to roll exhaustion. In addition, the roll diameter detector 223 can provide real-time data, allowing the control system to automatically adjust the unwinding speed and tension to ensure the stability and uniformity of the unwinding process. Furthermore, it can reduce manual intervention and improve the automation level and overall efficiency of the production line. Specifically, there are two roll diameter detectors 223, located on the second rotary arm 220 along both sides of the first rotary arm 210, which can be used to detect the roll diameter of the first roll 212 or the second roll 214 respectively.
[0042] During roll changing, the roll diameter detector 223 detects that the roll diameter of the first roll 212 is less than a set value. An adhesive portion, which is a roll-changing tape, is then placed on the second roll 214. At this time, the turret mechanism 200 begins to rotate to a ready state. In the ready state, the second rotating arm 220 is slightly tilted along the direction of the second roll 214. The specific tilt angle is determined according to the roll diameter of the second roll 214. The tilted second rotating arm 220 provides a better cutting point for the cutter 340 relative to the roll to be cut, accommodating rolls of various diameters.
[0043] In some embodiments, refer to Figure 1 The cutting mechanism 300 includes a third rotating arm 320, one end of which is rotatably connected to the frame 100, and the other end is provided with a cutter 340. The pressure roller 330 is rotatably disposed in the middle of the third rotating arm 320. The driving unit 310 is connected to the third rotating arm 320 to drive the third rotating arm 320 to swing toward the second unwinding unit 213.
[0044] Furthermore, the cutting mechanism 300 is equipped with a positioning sensor for positioning the new roll of material.
[0045] During the roll changing process, the second unwinding section accelerates the second roll to the same linear speed as the first roll. A positioning sensor detects the position of the bonding section, and then a pressure roller bonds the bonding section of the second roll together. Compared to conventional automatic roll changing and unwinding equipment that can only complete roll changing and splicing at a mechanical speed of 200 meters per minute, the structural layout of this invention enables roll changing and splicing at high mechanical speeds (200-400 meters per minute). This not only significantly improves the production efficiency of intermediate processes but also eliminates the need for deceleration or machine stoppage during the entire roll changing process, thereby significantly improving the continuity and overall efficiency of the production line.
[0046] Furthermore, the drive unit 310 is a cylinder, the output end of the cylinder is movably connected to the third rotating arm 320, and the cylinder is hinged to the frame 100.
[0047] By using a cylinder to drive the third rotary arm 320, rapid and precise cutting of the roll can be achieved, improving the efficiency and accuracy of roll changing. The pressure roller 330, located in the middle of the third rotary arm 320, provides stable clamping force during cutting by the cutter 340, ensuring the flatness and consistency of the cut. Furthermore, the rotary arm structure allows for a more compact layout of the cutting mechanism 300, saving space, and the rotational movement of the rotary arm can cover a wider operating range, enhancing the system's flexibility.
[0048] In some embodiments, refer to Figure 4 The pressure roller 330 comprises, from the outside in, a sponge layer 331, a profile layer 332, and a shaft head 333.
[0049] Traditional pressure rollers (330) have high hardness. When the speed increases, conventional pressure rollers (330) bounce back after pressing down, resulting in a short contact time with the new roll material and insufficient adhesive adhesion. Therefore, a sponge layer (331) with lower hardness is selected. Specifically, the sponge layer (331) is made of foamed EPDM rubber with a Shore hardness of 20-35°. The sponge roller is softer and deforms more significantly after pressing down, allowing the substrate to be fully pressed onto the adhesive tape of the new roll material. This ensures a sufficient bonding time, a stronger bond, and significantly improves the reliability and efficiency of the roll changeover process.
[0050] In some embodiments, a special roll-changing tape is used for the adhesive portion during roll changing. Specifically, the roll-changing tape is made of a paper substrate and acrylic adhesive. This special adhesive allows for strong bonding even under high-speed rotation.
[0051] In some embodiments, the conveying mechanism 400 further includes a tension roller 410 and a swing roller 420; the tension roller 410 is used to detect the tension of the belt, and the swing roller 420 is used to adjust the tension of the belt. The tension roller 410 can monitor the belt tension in real time, and together with the swing roller 420, it can quickly and effectively adjust the belt tension by adjusting the path length of the belt, ensuring that the belt maintains a constant and appropriate tension during the conveying process, thereby avoiding instability in the conveying process caused by the belt being too loose or too tight.
[0052] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. An unwinding device, characterized in that, include: A frame and a turret mechanism, a cutting mechanism, and a conveying mechanism mounted on the frame; The turret mechanism is rotatable relative to the frame and has a first unwinding section and a second unwinding section. The first unwinding section is used to install a first roll, and the second unwinding section is used to install a second roll. The first roll is output through the conveying mechanism, and the second roll is provided with an adhesive section. The cutting mechanism includes a drive unit, a pressure roller, and a cutter. When changing rolls, the turret mechanism rotates, moving the second unwinding section between the first unwinding section and the conveying mechanism. The drive unit drives the cutting mechanism to move. The pressure roller is located between the first unwinding section and the conveying mechanism and is used to move the first roll towards the second unwinding section so that the adhesive part of the first roll and the second roll come into contact and bond. The cutter is used to cut the first roll connecting the first unwinding section and the second unwinding section.
2. The unwinding device according to claim 1, characterized in that, The turret mechanism includes a first rotating arm and a second rotating arm that are fixedly arranged in a cross configuration; The first rotating arm has a first unwinding section and a second unwinding section at both ends, and the second rotating arm has a first guide roller and a second guide roller at both ends. When the turret mechanism rotates, the first guide roller and the second guide roller are used to adjust the adjustment path direction of the first or second tape, respectively.
3. The unwinding device according to claim 2, characterized in that, The first and second spiral arms are perpendicular to each other.
4. The unwinding device according to claim 2, characterized in that, The second rotating arm is equipped with a roll diameter detector for detecting the roll diameter of the first or second roll.
5. The unwinding device according to claim 1, characterized in that, The cutting mechanism includes a third rotating arm, one end of which is rotatably connected to the frame and the other end is provided with a cutter. The pressure roller is rotatably disposed in the middle of the third rotating arm. The driving unit is connected to the third rotating arm to drive the third rotating arm to swing toward the second unwinding unit.
6. The unwinding device according to claim 5, characterized in that, The drive unit is a cylinder, the output end of which is movably connected to the third rotating arm, and the cylinder is hinged to the frame.
7. The unwinding device according to claim 1, characterized in that, The pressure roller comprises, from the outside in, a sponge layer, a profile layer, and a shaft head.
8. The unwinding device according to claim 7, characterized in that, The sponge layer is made of foamed EPDM rubber with a Shore hardness of 20-35°.
9. The unwinding device according to claim 1, characterized in that, The adhesive components are made of paper substrate and acrylic adhesive.
10. The unwinding device according to claim 1, characterized in that, The conveying mechanism also includes a tension roller and a swing roller; The tension roller is used to detect the tension of the belt, and the swing roller is used to adjust the tension of the belt.