Feed spool device for a winding machine

Abstract

The application discloses a feeding shaft device of a winding machine, the winding machine comprising a rack, a friction roller rotatably installed on the rack and a winding shaft frictionally rolling with the friction roller, the inner sides of a pair of wall plates of the rack are respectively provided with sliding rails extending along the front-back direction, the feeding shaft device comprising: a chuck mechanism and a moving mechanism driving the chuck mechanism to move forward and backward, the chuck mechanism comprising a pair of pneumatic chuck assemblies slidably installed on the outer sides of the pair of wall plates along the front-back direction, a moving long hole is formed on each wall plate, each pneumatic chuck assembly comprising a pneumatic chuck capable of extending into the inner side of the wall plate from the moving long hole to clamp the end of the winding shaft; the moving mechanism comprising a driving motor, a magnetic powder clutch in transmission connection with the driving motor and a transmission shaft in transmission connection with the magnetic powder clutch, the two ends of the transmission shaft are respectively in transmission connection with the sliding supports of the pair of pneumatic chuck assemblies through gear and rack assemblies; the application has the advantages of simple structure, high automation degree, stable and controllable operation.

Description

Technical Field

[0001] This application relates to the field of winding equipment technology, and in particular to a shaft feeding device for a winding machine. Background Technology

[0002] In most current film winding machines, the forward and backward movement of the air shaft is driven at a constant speed. When the air shaft is fully wound, it pulls the film backward at a constant speed. However, the stretching of the film is not a constant process. During the stretching process, excessive tension may occur. For the film, sudden excessive tension can lead to film damage and uneven subsequent winding. Summary of the Invention

[0003] To address the aforementioned technical problems, the purpose of this application is to provide a shaft feeding device for a winding machine that is highly automated and operates smoothly and controllably.

[0004] To achieve the above objectives, this application adopts the following technical solution: a shaft feeding device for a winding machine, the winding machine comprising a frame, a friction roller rotatably mounted on the frame, and a winding shaft that rubs and rolls against the friction roller, the frame comprising a pair of wall plates arranged opposite each other on the left and right, and a slide rail supporting the end of the winding shaft being installed on the inner side of each wall plate, the slide rail extending in the front-back direction, the shaft feeding device comprising:

[0005] A chuck mechanism includes a pair of pneumatic chuck assemblies slidably mounted on the outer sides of a pair of wall panels in a front-rear direction. Each wall panel has a movable elongated hole located above the slide rail. Each pneumatic chuck assembly includes a pneumatic chuck capable of extending through the movable elongated hole into the inner side of the wall panel to clamp the end of the take-up shaft.

[0006] A moving mechanism is driven by the chuck mechanism to drive the pair of pneumatic chuck assemblies to move in the front-back direction. The moving mechanism includes a drive motor, a magnetic powder clutch driven by the drive motor, and a drive shaft driven by the magnetic powder clutch. The drive shaft extends in the left-right direction. The two ends of the drive shaft are respectively driven by a gear and rack assembly to the sliding bracket of the pair of pneumatic chuck assemblies. The drive motor drives the drive shaft to rotate through the magnetic powder clutch.

[0007] In the above technical solution, in a further preferred embodiment, each of the pneumatic chuck assemblies further includes a sliding guide rail and a sliding bracket. The sliding guide rail extends along the front-back direction and is installed on the outer surface of the wall panel. The sliding bracket is slidably engaged with the sliding guide rail. The pneumatic chuck is fixedly installed on the top of the sliding bracket.

[0008] In the above technical solution, a further preferred embodiment is that the gear and rack assembly includes a rack extending in the front-rear direction and a gear meshing with the rack. The rack is fixed on the corresponding sliding bracket, and the gear is coaxially connected to the end of the transmission shaft. The gear rotates synchronously with the transmission shaft.

[0009] In the above technical solution, a further preferred embodiment is that a pulley drive assembly is used to drive the magnetic powder clutch and the drive shaft. The pulley drive assembly includes a first pulley, a second pulley, and a belt. The first pulley is coaxially mounted on the drive shaft, the second pulley is coaxially mounted on the output shaft of the magnetic powder clutch, and the belt passes over both the first pulley and the second pulley.

[0010] In the above technical solution, it is further preferred that the magnetic powder clutch and the drive motor are connected by a coupling.

[0011] In the above technical solution, it is further preferred that the axis of the friction roller extends in the left-right direction, and both ends are rotatably mounted on the pair of wall plates by bearings with seats.

[0012] Compared with the prior art, this application achieves the following beneficial effects:

[0013] This application features a simple structure and a high degree of automation. In the event of a sudden increase in the tension of the wound product, the tension can be balanced by limiting the output of power, preventing the film from being subjected to excessive tension stretching, ensuring the quality of the film product, and ensuring the flatness of the winding. Attached Figure Description

[0014] Figure 1 A front view of a shaft feeding device installed on a winding machine, provided in an embodiment of this application;

[0015] Figure 2 for Figure 1 A side view of the winding machine in the middle;

[0016] Figure 3 for Figure 1 A top view of the winding machine.

[0017] The components are as follows: 100, winding machine; 10, shaft feeding device; 4, chuck mechanism; 41, pneumatic chuck assembly; 411, sliding guide rail; 412, sliding bracket; 413, pneumatic chuck; 5, moving mechanism; 51, drive motor; 52, magnetic powder clutch; 53, transmission shaft; 54, pulley drive assembly; 541, first pulley; 542, second pulley; 543, belt; 55, gear and rack assembly; 551, rack; 552, gear; 20, winding shaft; 30, frame; 1, base frame; 2, wall panel; 21, moving elongated hole; 3, slide rail; 40, friction roller. Detailed Implementation

[0018] To illustrate the technical content, structural features, achieved objectives, and effects of the application in detail, the technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. In the following description, for illustrative purposes, numerous specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in one or more equivalent arrangements. Furthermore, the various exemplary embodiments may differ, but are not necessarily exclusive. For example, the specific shape, structure, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

[0019] This application provides a shaft feeding device for a winding machine, such as... Figure 1-3 As shown, the shaft feeding device 10 is used to convey the take-up shaft 20 in the front-to-back direction on the take-up machine 100 to complete automatic take-up and smooth unwinding. The take-up machine 100 includes a frame 30 and a friction roller 40 rotatably mounted on the frame 30. The frame 30 includes a base frame 1 and a pair of wall plates 2 arranged opposite each other on the base frame 1. The friction roller 40 extends in the left-to-right direction, and its two ends are rotatably mounted on the pair of wall plates 2 by bearings. Each wall plate 2 has a slide rail 3 extending in the front-to-back direction installed on its inner side. The pair of slide rails 3 are located behind the friction roller 40. The two ends of the take-up shaft 20 are supported on the slide rails 3 on the pair of wall plates 2 and can move back and forth along the pair of slide rails 3.

[0020] The shaft feeding device 10 includes a chuck mechanism 4 and a moving mechanism 5. The chuck mechanism 4 clamps the take-up shaft 20 from the left and right sides. The moving mechanism 5 drives the chuck mechanism 4 to move the clamped take-up shaft 20 in the front-back direction, thereby moving it closer to and away from the front friction roller 40.

[0021] like Figure 2 , 3As shown, the chuck mechanism 4 includes a pair of pneumatic chuck assemblies 41 arranged opposite each other on the outer sides of a pair of wall plates 1. Each pneumatic chuck assembly 41 can slide back and forth relative to the corresponding wall plate 2 in the front-back direction. Each pneumatic chuck assembly 41 includes a sliding guide rail 411 fixed to the outer surface of the corresponding wall plate 2, a sliding bracket 412 cooperating with the sliding guide rail 411, and a pneumatic chuck 413 fixed to the top of the sliding bracket 412. Each wall plate 2 has a movable elongated hole 21 extending in the front-back direction. The movable elongated hole 21 is opened above the corresponding slide rail 3. The grippers of the pneumatic chuck 413 extend into the inner side of the wall plate 2 through the movable elongated hole 21 to clamp the end of the winding shaft 20. The pair of pneumatic chucks 413 clamp the two ends of the winding shaft 20 from the left and right sides respectively. When the pair of sliding brackets 412 moves back and forth along the corresponding sliding guide rail 411, the pair of pneumatic chucks 413 drive the clamped winding shaft 20 to move back and forth in the front-back direction.

[0022] The take-up shaft 20 has a take-up position that contacts the friction roller 40 and an unwinding position that is away from the friction roller 40 on the slide rail 3. After the chuck mechanism 4 clamps the take-up shaft 20 and moves it to the take-up position that contacts the friction roller 40, it releases the take-up shaft 20. The take-up shaft 20 rolls under friction contact with the friction roller 40, thereby performing friction take-up. When the take-up shaft 20 is fully wound, the chuck mechanism 4 clamps the take-up shaft 20 and moves it backward to the unwinding position, so that the take-up shaft 20 can be unwound in time and the take-up shaft can be changed.

[0023] like Figure 1-3 As shown, the moving mechanism 5 includes a drive motor 51, a magnetic powder clutch 52, a transmission shaft 53, a pulley transmission assembly 54, and a gear and rack assembly 55. The drive motor 51 is connected to the magnetic powder clutch 52 via a coupling 56. The magnetic powder clutch 52 is connected to the transmission shaft 53 via the pulley transmission assembly 54. The transmission shaft 53 extends in the left-right direction. The drive motor 51 drives the transmission shaft 53 to rotate around its own axis via the magnetic powder clutch 52. The pulley transmission assembly 54 includes a first pulley 541, a second pulley 542, and a belt 543. The first pulley 541 is coaxially mounted on the transmission shaft 53, and the second pulley 542 is coaxially mounted on the output shaft of the magnetic powder clutch 52. The belt 543 passes over both the first pulley 541 and the second pulley 542. The magnetic powder clutch 52 transmits the drive power of the drive motor 51 to the transmission shaft 53 in a timely manner through the pulley transmission assembly 54, causing the transmission shaft 53 to rotate.

[0024] Both ends of the drive shaft 53 are connected to the sliding brackets 412 of the pneumatic chuck assembly 41 via a gear and rack assembly 55, thereby driving the pneumatic chuck assembly 41 in the front-back direction. Each gear and rack assembly 55 includes a rack 551 extending in the front-back direction and a gear 552 meshing with the rack 551. The rack 551 is fixed to the bottom of the corresponding sliding bracket 412, and the gear 552 is coaxially connected to the end of the drive shaft 53. When the drive shaft 53 rotates around its own axis, the gear 552 rotates synchronously with the drive shaft 53. When the gear 552 rotates with the drive shaft 53, the rack 551 meshing with the gear 552 drives the connected sliding bracket 412 to move back and forth. The drive shaft 53 is also connected to a pair of pneumatic chuck assemblies 41, thereby driving the pair of pneumatic chuck assemblies 41 to move synchronously and smoothly in the front-back direction, thus ensuring that the winding shaft 20 remains parallel to the friction roller 40 in the front-back direction, without the risk of jamming or skewing, and with accurate positioning.

[0025] The energizing current of the magnetic powder clutch 52 can precisely and smoothly linearly control the output torque according to the tension of the product on the winding shaft, and can achieve rapid start, stop, and speed adjustment. This makes the winding shaft 20 very smooth during the start and stop phases of movement, avoiding impacts, vibrations, or slippage of the shaft on the slide rail 3 caused by inertia, greatly improving the stability and safety of equipment operation. In the event of a sudden increase in the tension of the wound product, the tension of the product can be balanced by limiting the power output, preventing the film from being subjected to excessive tension stretching, ensuring the quality of the film product, and ensuring the flatness of the winding.

[0026] In this application, when the product on the take-up shaft 20 is fully wound, the pneumatic chucks 413 on both sides extend their grippers to clamp the two ends of the take-up shaft 20. Then, the drive motor 51 starts, and the torque is precisely adjusted by the magnetic powder clutch 52. The drive shaft 53 is driven to rotate through the pulley drive assembly 54. Then, through a pair of gear and rack assemblies 55, the pair of pneumatic chucks 413 clamping the take-up shaft 20 moves backward synchronously. When the take-up shaft 20 moves to the unwinding position, the drive motor 51 stops driving, and the pair of pneumatic chucks 413 release the take-up shaft 20 to facilitate shaft replacement. After shaft replacement, the pair of pneumatic chucks 413 clamp the take-up shaft again, the drive motor 51 rotates in the opposite direction, and the pair of chucks 413 drive the clamped take-up shaft back to the winding position, completing one work cycle.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made without departing from the spirit and scope of this application. The scope of protection claimed by this application is defined by the appended claims, specification, and their equivalents.

Claims

1. A shaft feeding device for a winding machine, the winding machine comprising a frame, a friction roller rotatably mounted on the frame, and a winding shaft that rubs and rolls against the friction roller, the frame comprising a pair of wall plates arranged opposite each other, each wall plate having a slide rail mounted on its inner side to support the end of the winding shaft, the slide rail extending in a front-rear direction, characterized in that, The aforementioned shaft feeding device includes: A chuck mechanism includes a pair of pneumatic chuck assemblies slidably mounted on the outer sides of a pair of wall panels in a front-rear direction. Each wall panel has a movable elongated hole located above the slide rail. Each pneumatic chuck assembly includes a pneumatic chuck capable of extending through the movable elongated hole into the inner side of the wall panel to clamp the end of the take-up shaft. A moving mechanism is driven by the chuck mechanism to drive the pair of pneumatic chuck assemblies to move in the front-back direction. The moving mechanism includes a drive motor, a magnetic powder clutch driven by the drive motor, and a drive shaft driven by the magnetic powder clutch. The drive shaft extends in the left-right direction. The two ends of the drive shaft are respectively driven by a gear and rack assembly to the sliding bracket of the pair of pneumatic chuck assemblies. The drive motor drives the drive shaft to rotate through the magnetic powder clutch.

2. The shaft feeding device according to claim 1, characterized in that, Each of the aforementioned pneumatic chuck assemblies further includes a sliding guide rail and a sliding bracket. The sliding guide rail extends in the front-rear direction and is mounted on the outer surface of the wall panel. The sliding bracket is slidably engaged with the sliding guide rail, and the pneumatic chuck is fixedly mounted on the top of the sliding bracket.

3. The shaft feeding device according to claim 2, characterized in that, The gear and rack assembly includes a rack extending in the front-rear direction and a gear meshing with the rack. The rack is fixed on the corresponding sliding bracket, and the gear is coaxially connected to the end of the drive shaft. The gear rotates synchronously with the drive shaft.

4. The shaft feeding device according to claim 1, characterized in that, A pulley drive assembly is connected between the magnetic powder clutch and the drive shaft. The pulley drive assembly includes a first pulley, a second pulley, and a belt. The first pulley is coaxially mounted on the drive shaft, and the second pulley is coaxially mounted on the output shaft of the magnetic powder clutch. The belt passes over both the first pulley and the second pulley.

5. The shaft feeding device according to claim 1, characterized in that, The magnetic powder clutch and the drive motor are connected by a coupling.

6. The shaft feeding device according to claim 1, characterized in that, The axis of the friction roller extends in the left-right direction, and both ends are rotatably mounted on the pair of wall plates via bearings.

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