Quick-release unreeling mechanism

Abstract

The utility model relates to the technical field of unwinding mechanisms, in particular to a quick-release unwinding mechanism. The winding roller mounting device has the advantages that the driven worm gear is driven to rotate by rotating the driving worm, then the cam is driven to rotate, the guide rolling shaft is pushed through the protruding part of the cam, the sliding supporting plate can be pushed towards the supporting plate, the positioning sleeve and the sliding sleeve can clamp and fix a winding roller from the two sides, and mounting of the winding roller is achieved; similarly, the driving worm only needs to be reversely rotated to drive the protruding part of the cam to be away from the guide rolling shaft, the sliding supporting plate can move towards the side away from the supporting plate, and therefore the winding roller can be disengaged from the positioning sleeve and the sliding sleeve, and disassembly is achieved; the positioning sleeve and the sliding sleeve can press the winding roller from the two ends and then can abut against the end of the winding roller, the combined friction force is improved, and the driving motor can drive the winding roller to rotate when driving the positioning sleeve to rotate.

Description

Technical Field

[0001] This utility model relates to the field of unwinding mechanism technology, and in particular to a quick-release unwinding mechanism. Background Technology

[0002] In modern industrial production, unwinding mechanisms, as key equipment for material conveying, are widely used in many fields such as packaging, printing, textiles, and coating. Their efficiency and stability directly affect the overall efficiency of the production line. An efficient unwinding mechanism can ensure a continuous and stable supply of materials, avoiding production stoppages caused by material supply interruptions.

[0003] Currently, the connection between the unwinding mechanism and the winding roll is mostly secured by clamps and bolts, which requires repeatedly tightening and loosening the bolts during disassembly and assembly, which is very inconvenient and affects the efficiency of winding roll replacement. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a quick unwinding mechanism, which effectively solves the deficiencies of the prior art.

[0005] To achieve the above objectives, one embodiment of this utility model provides a quick-release unwinding mechanism, including a support platform. A support plate is fixedly connected to one edge of the top surface of the support platform. A positioning sleeve is rotatably connected to the center of the top of the support plate. Two fixed upright plates are fixedly connected to the side of the top surface of the support platform away from the support plate. Guide rods are fixedly connected to both sides of the two fixed upright plates. A sliding support plate is slidably connected to the outer walls of the two guide rods. A sliding sleeve with the same structure as the positioning sleeve is rotatably connected to the center of the top of the sliding support plate. A roller is inserted into the inner wall of both the positioning sleeve and the sliding sleeve. A fixed lug is fixedly connected to the bottom of one side of the sliding support plate. A guide roller is rotatably connected to the middle of one side of the fixed lug. A support lug is fixedly connected to the middle of the inner side of the fixed upright plate. A drive shaft is rotatably connected to the center of the support lug. A cam is fixedly connected to the top of the drive shaft. The outer wall of the cam is in close contact with the guide roller. A driven worm gear is fixedly connected to the bottom end of the drive shaft. A drive worm is rotatably connected to one side of the bottom surface of the support platform through a lifting lug. The middle of the drive worm is meshed with the driven worm gear.

[0006] Preferably, in any of the above solutions, both sides of the bottom surface of the support platform are fixedly connected to support feet, and the top of the two support feet is lower than the bottom position when the crank is rotated to the bottom.

[0007] The technical effect achieved by adopting the above solution is that the bottom of the crank handle has room to rotate, making it easy to adjust.

[0008] Preferably, in any of the above solutions, a thrust spring is provided at the center between the sliding support plate and the fixed upright plate near the support plate, and the length of the thrust spring after reset is adapted to the length of the guide bar.

[0009] The technical effect achieved by the above solution is that by using this solution, the support plate can be pushed away from the support plate by the thrust spring, so that the roller can be disassembled from the positioning sleeve and the sliding sleeve.

[0010] Preferably, in any of the above embodiments, the inner walls of the positioning sleeve and the sliding sleeve are both tapered structures, the internal structures of the positioning sleeve and the sliding sleeve are symmetrical to each other, and the opening directions of the tapered surfaces inside the positioning sleeve and the sliding sleeve correspond to each other.

[0011] The technical effect achieved by the above solution is that by using this solution, the positioning sleeve and the sliding sleeve can press the end of the roller after pressing it from both ends, thereby increasing the friction of the connection. This allows the drive motor to rotate the positioning sleeve and thus drive the roller to rotate.

[0012] Preferably, in any of the above solutions, the distance between the positioning sleeve and the fixed upright plate near the support plate is less than the length of the roller, and the roller transitions into the inner wall of the positioning sleeve and the sliding sleeve.

[0013] The technical effect achieved by adopting the above solution is that the transition fit facilitates the pulling out of the positioning sleeve and the sliding sleeve of the roller, and the distance between the positioning sleeve and the fixed vertical plate near the support plate ensures that the sliding sleeve can press one end of the roller.

[0014] Preferably, in any of the above embodiments, a driven pulley is fixedly connected to the outer side of the positioning sleeve, a drive motor is fixedly connected to the center of the bottom side of one side of the support plate, a drive pulley is fixedly connected to the output end of the drive motor, a transmission belt is connected to the outer wall of the driven pulley and the drive pulley, and a crank handle is fixedly connected to one end of the drive worm.

[0015] The technical effect achieved by adopting the above solution is that the positioning sleeve 3 can be rotated by the drive motor 4, which in turn drives the winding roller 14 to rotate for winding and unwinding.

[0016] This utility model has the following advantages:

[0017] 1. This quick-release unwinding mechanism drives the driven worm gear to rotate, which in turn drives the cam to rotate. The cam's protruding part pushes the guide roller, which pushes the sliding support plate towards the support plate. This allows the positioning sleeve and the sliding sleeve to clamp and fix the roll from both sides, thus enabling the roll to be installed. Similarly, by simply reversing the drive worm gear to move the cam's protruding part away from the guide roller, the sliding support plate can be moved away from the support plate, allowing the roll to disengage from the positioning sleeve and the sliding sleeve, achieving disassembly. This facilitates easy assembly and disassembly without the need for bolt removal, improving the roll replacement efficiency.

[0018] 2. The quick-release unwinding mechanism, through the symmetrical conical surface structure inside the positioning sleeve and the sliding sleeve, can press the winding roller from both ends and then press the winding roller against the end of the winding roller, thereby increasing the friction of the connection. This allows the drive motor to rotate the positioning sleeve and thus drive the rotation of the pressing winding roller. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a top view of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0022] In the diagram: 1-Supporting machine base, 2-Supporting plate, 3-Positioning sleeve, 4-Drive motor, 5-Drive pulley, 6-Driven pulley, 7-Transmission belt, 8-Fixed upright plate, 9-Guide rod, 10-Sliding support plate, 11-Thrust spring, 12-Crank handle, 13-Supporting foot, 14-Rolling roller, 15-Sliding sleeve, 16-Transmission shaft, 17-Cam, 18-Driven worm gear, 19-Drive worm, 20-Fixed ear plate, 21-Guide roller, 22-Supporting ear. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0024] like Figures 1 to 3As shown, a quick-release unwinding mechanism includes a support platform 1. A support plate 2 is fixedly connected to one edge of the top surface of the support platform 1. A positioning sleeve 3 is rotatably connected to the center of the top of the support plate 2. Two fixed upright plates 8 are fixedly connected to the top surface of the support platform 1 away from the support plate 2. Guide bars 9 are fixedly connected to both sides between the two fixed upright plates 8. A sliding support plate 10 is slidably connected to the outer walls of the two guide bars 9. A sliding sleeve 15 with the same structure as the positioning sleeve 3 is rotatably connected to the center of the top of the sliding support plate 10. The inner walls of the positioning sleeve 3 and the sliding sleeve 15 are inserted together. The roller 14 and the sliding support plate 10 are fixedly connected to a fixed ear plate 20 on one side bottom. A guide roller 21 is rotatably connected to the middle of one side of the fixed ear plate 20. A support ear 22 is fixedly connected to the middle of the inner side of the fixed upright plate 8. A transmission shaft 16 is rotatably connected to the center of the support ear 22. A cam 17 is fixedly connected to the top of the transmission shaft 16. The outer wall of the cam 17 is in close contact with the guide roller 21. A driven worm gear 18 is fixedly connected to the bottom end of the transmission shaft 16. A drive worm 19 is rotatably connected to one side of the bottom surface of the support base 1 through a lifting lug. The middle of the drive worm gear 19 is meshed with the driven worm gear 18.

[0025] As an optional technical solution of this utility model, both sides of the bottom surface of the support base 1 are fixedly connected with support feet 13. The top of the two support feet 13 is lower than the bottom position of the crank handle 12 when it is rotated to the bottom, so that the bottom of the crank handle 12 has room to rotate and is convenient for adjustment.

[0026] As an optional technical solution of this utility model, a thrust spring 11 is provided at the center between the sliding support plate 10 and the fixed upright plate 8 near the support plate 2. The length of the thrust spring 11 after reset is adapted to the length of the guide bar 9. The thrust spring 11 pushes the support plate 2 to slide away from the support plate 2 so that the roller 14 can be disengaged from the positioning sleeve 3 and the sliding sleeve 15, thereby realizing disassembly.

[0027] As an optional technical solution of this utility model, the inner walls of the positioning sleeve 3 and the sliding sleeve 15 are both conical surface structures. The internal structures of the positioning sleeve 3 and the sliding sleeve 15 are symmetrical to each other, and the opening directions of the conical surfaces inside the positioning sleeve 3 and the sliding sleeve 15 correspond to each other. This allows the positioning sleeve 3 and the sliding sleeve 15 to press against the end of the roller 14 after pressing against it from both ends, thereby increasing the friction of the connection. This allows the drive motor 4 to drive the positioning sleeve 3 to rotate, which in turn drives the roller 14 to rotate.

[0028] As an optional technical solution of this utility model, the distance between the positioning sleeve 3 and the fixed upright plate 8 near the support plate 2 is less than the length of the roller 14. The roller 14 transitions with the inner wall of the positioning sleeve 3 and the sliding sleeve 15. The transition fit facilitates the roller 14 to pull out the positioning sleeve 3 and the sliding sleeve 15. Moreover, the distance between the positioning sleeve 3 and the fixed upright plate 8 near the support plate 2 ensures that the sliding sleeve 15 can press one end of the roller 14.

[0029] As an optional technical solution of this utility model, a driven pulley 6 is fixedly connected to the outer side of the positioning sleeve 3, a drive motor 4 is fixedly connected to the center of the bottom side of the support plate 2, a drive pulley 5 is fixedly connected to the output end of the drive motor 4, a transmission belt 7 is connected to the outer wall of the driven pulley 6 and the drive pulley 5, and a crank handle 12 is fixedly connected to one end of the drive worm 19, so that the positioning sleeve 3 can be driven to rotate by the drive motor 4, thereby driving the winding roller 14 to rotate for winding and unwinding.

[0030] This quick-release unwinding mechanism requires the following steps to be used:

[0031] 1) By rotating the drive worm 19, the driven worm wheel 18 is driven to rotate, which in turn drives the cam 17 to rotate. The protruding part of the cam 17 pushes the guide roller 21, which can push the sliding support plate 10 towards the support plate 2. This allows the positioning sleeve 3 and the sliding sleeve 15 to clamp and fix the roller 14 from both sides, thus realizing the installation of the roller 14.

[0032] 2) Then, the positioning sleeve 3 is rotated by the drive motor 4, which in turn drives the top tensioning roller 14 to rotate and unwind;

[0033] 3) After unwinding, the reverse drive worm 19 drives the protruding part of the cam 17 away from the guide roller 21, which can make the sliding support plate 10 move away from the support plate 2. The thrust spring 11 pushes the support plate 2 to slide away from the support plate 2, so that the winding roller 14 can be disengaged from the positioning sleeve 3 and the sliding sleeve 15, thus achieving disassembly.

[0034] In summary, this invention drives the driven worm gear 18 to rotate by rotating the drive worm 19, which in turn drives the cam 17 to rotate. The protruding part of the cam 17 pushes the guide roller 21, which pushes the sliding support plate 10 toward the support plate 2. This allows the positioning sleeve 3 and the sliding sleeve 15 to clamp and fix the roller 14 from both sides, thus achieving the installation of the roller 14. Similarly, by simply reversing the drive worm 19 to move the protruding part of the cam 17 away from the guide roller 21, the sliding support plate 10 can be moved away from the support plate 2. The movement on one side allows the roller 14 to disengage from the positioning sleeve 3 and the sliding sleeve 15, enabling disassembly and facilitating easy assembly and disassembly without the need for bolts. This improves the replacement efficiency of the roller 14. The symmetrical conical surface structure inside the positioning sleeve 3 and the sliding sleeve 15 allows them to press against the end of the roller 14 after pressing it from both ends, increasing the friction of the connection. This allows the drive motor 4 to rotate the positioning sleeve 3, which in turn drives the roller 14 to rotate.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-release unwinding mechanism, characterized in that: The system includes a support platform. A support plate is fixedly connected to one edge of the top surface of the support platform. A positioning sleeve is rotatably connected to the center of the top of the support plate. Two fixed upright plates are fixedly connected to the top surface of the support platform away from the support plate. Guide rods are fixedly connected to both sides of the two fixed upright plates. A sliding support plate is slidably connected to the outer walls of the two guide rods. A sliding sleeve with the same structure as the positioning sleeve is rotatably connected to the center of the top of the sliding support plate. A roller is inserted into the inner walls of the positioning sleeve and the sliding sleeve. A fixed ear plate is fixedly connected to the bottom of one side of the sliding support plate. A guide roller is rotatably connected to the middle of one side of the fixed ear plate. A support ear is fixedly connected to the middle of the inner side of the fixed upright plate. A drive shaft is rotatably connected to the center of the support ear. A cam is fixedly connected to the top of the drive shaft. The outer wall of the cam is in close contact with the guide roller. A driven worm gear is fixedly connected to the bottom end of the drive shaft. A drive worm is rotatably connected to one side of the bottom surface of the support platform via a lifting lug. The middle of the drive worm gear meshes with the driven worm gear.

2. The quick-release unwinding mechanism according to claim 1, characterized in that: Both sides of the bottom surface of the support platform are fixedly connected to support feet, and the top of the two support feet is lower than the bottom position when the crank is turned to the bottom.

3. The quick-release unwinding mechanism according to claim 2, characterized in that: A thrust spring is provided at the center between the sliding support plate and the fixed upright plate near the support plate. The length of the thrust spring after reset is adapted to the length of the guide bar.

4. The quick-release unwinding mechanism according to claim 3, characterized in that: The inner walls of both the positioning sleeve and the sliding sleeve are tapered structures. The internal structures of the positioning sleeve and the sliding sleeve are symmetrical to each other, and the opening directions of the tapered surfaces inside the positioning sleeve and the sliding sleeve correspond to each other.

5. The quick-release unwinding mechanism according to claim 4, characterized in that: The distance between the positioning sleeve and the fixed upright plate near the support plate is less than the length of the roller, and the roller transitions into the inner wall of the positioning sleeve and the sliding sleeve.

6. The quick-release unwinding mechanism according to claim 5, characterized in that: A driven pulley is fixedly connected to the outer side of the positioning sleeve. A drive motor is fixedly connected to the center of the bottom side of one side of the support plate. A drive pulley is fixedly connected to the output end of the drive motor. A transmission belt is connected to the outer wall of the driven pulley and the drive pulley. A crank handle is fixedly connected to one end of the drive worm.

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