Winding and unwinding device and casting machine

Abstract

The utility model relates to the technical field of casting equipment, and provides a winding and unwinding device and a casting machine, which comprise a base, an air expansion shaft rotatably supported on the base and a driving component capable of driving the air expansion shaft to rotate around the axis of the air expansion shaft, the inflatable shaft comprises a hollow shaft body, the shaft body is provided with a first end and a second end which are opposite, the first end is provided with a first air nozzle component with a valve element, the second end is provided with a second air nozzle component used for being connected with an air source device, and a plurality of protruding keys and an air bag used for pushing the outer ends of the protruding keys out of the outer surface of the shaft body are arranged in the shaft body. The two ends of the air bag are connected with the first air nozzle component and the second air nozzle component respectively. Compared with the prior art, the situation that the rolled film cannot be fixed due to air leakage of the inflatable shaft can be avoided, and the winding and unwinding device is better in structural stability and supporting effect.

Description

Technical Field

[0001] The utility model relates to the technical field of casting equipment, in particular to a winding and unwinding device and a casting machine. Background Art

[0002] A cast film machine is a specialized device used to produce cast film. It utilizes a high-precision electronic ceramic cast film machine, using alumina as the primary raw material for ceramic film casting. The crushed powder is first mixed with a binder, plasticizer, dispersant, and solvent to create a slurry with a certain viscosity. The slurry is then cast or coated onto a specialized base tape. After drying and demolding, the film is cut into sheets of the appropriate specifications across the full width. Currently, existing rewinding and unwinding equipment uses an inflatable shaft, which partially expands when inflated and partially retracts when deflated, to install the film roll. After inserting the film roll, the shaft's nozzle is inflated with an air gun, supporting the film roll. After deflation, the shaft retracts to allow loading and unloading of the film roll. However, over time, the shaft's nozzle is prone to leaks, preventing it from securing the film roll. The film roll will wobble during rotation, impacting the precision of processes such as winding, unwinding, and slitting. Utility Model Content

[0003] One of the purposes of the present invention is to provide a rewinding and unrewinding device to solve the technical problem in the prior art that the film roll cannot be fixed due to air leakage of the inflatable shaft and the film roll shakes when rotating.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a winding and unwinding device, comprising: a base, an inflatable shaft rotatably supported on the base, and a driving assembly capable of driving the inflatable shaft to rotate around the axis of the inflatable shaft; the inflatable shaft comprises a hollow shaft body, the shaft body having a first end and a second end opposite to each other, a first air nozzle component with a valve core being provided on the first end, a second air nozzle component for connecting to an air source device being provided on the second end, a plurality of convex keys and an air bag for pushing the outer end of the convex key out of the outer surface of the shaft body being provided inside the shaft body, and the two ends of the air bag are respectively connected to the first air nozzle component and the second air nozzle component.

[0005] The technical solution of the present invention has the following advantages: the rewinding and unwinding device continuously supplies air to the inflatable shaft through an external air source device connected to the second air nozzle component, so that the airbag is maintained within a preset air pressure range, and the first air nozzle component is manually deflated during loading and unloading. In this way, the situation where the roll film cannot be fixed due to air leakage of the inflatable shaft can be avoided, and the structure of the rewinding and unwinding device is more stable and the supporting effect is better.

[0006] In some embodiments, the shaft body includes an inflatable portion and a supporting portion on a support base, the inflatable portion has a mounting groove for accommodating an airbag and a convex key; the convex key includes a bottom plate portion and a convex top portion, and a convex top mating hole is formed on the surface of the inflatable portion that is connected to the mounting groove and for the convex top portion to extend out.

[0007] In some embodiments, a first air tube and a second air tube are provided in the shaft body, the first air tube is connected to the first air nozzle component and the air bag respectively, and the second air tube is connected to the second air nozzle component and the air bag respectively.

[0008] In some embodiments, a first shaft inner sleeve and a second shaft inner sleeve are provided in the inflatable part, and an end of the inflatable part away from the support part is connected to an shaft end seat, the first shaft inner sleeve is respectively abutted against the shaft end seat and the end of the airbag, and the first shaft inner sleeve has a first through hole for the first air tube to pass through; the second shaft inner sleeve is respectively abutted against the inner wall of the end of the inflatable part close to the support part and the end of the airbag, and the second shaft inner sleeve has a second through hole for the second air tube to pass through.

[0009] In some embodiments, the number of the convex top portions of the convex key is four, and the four convex top portions are spaced apart along the axial direction of the inflatable shaft.

[0010] In some embodiments, the outer surface of the convex top of the convex key is provided with an anti-slip structure for abutting against the rolled film.

[0011] In some embodiments, the drive assembly is disposed on and supported by the base, and the drive assembly includes a servo motor, an active synchronous wheel connected to the servo motor, a driven synchronous wheel connected to the pneumatic shaft, and a synchronous belt respectively connected to the active synchronous wheel and the driven synchronous wheel.

[0012] In some embodiments, the drive assembly further comprises a drive shaft connected to the servo motor and driven to rotate by the servo motor, and the drive shaft and the inflatable shaft are parallel to each other.

[0013] In some embodiments, a dustproof protective cover is provided on the base, and a connecting rod is provided on the base, one end of the connecting rod is fixed to the base, and the other end is fixed to the dustproof protective cover.

[0014] Another object of the present invention is to provide a casting machine to solve the technical problem in the prior art that the air shaft leaks and the roll film cannot be fixed, thereby affecting the process accuracy of winding, unwinding and slitting.

[0015] In order to achieve the object, the utility model provides a casting machine, comprising the above-mentioned winding and unwinding device for supporting the roll film.

[0016] The casting machine adopts the above-mentioned winding and unwinding device, and the structure of the winding and unwinding device is more stable, thereby ensuring the process accuracy of winding, unwinding and slitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the reeling and unreeling device provided by an embodiment of the utility model;

[0018] Figure 2 This is a three-dimensional schematic diagram of the reeling and unreeling device provided by an embodiment of the utility model when the dust protection cover is removed;

[0019] Figure 3 This is a schematic cross-sectional view of an inflatable shaft provided by an embodiment of the present utility model;

[0020] Figure 4 This is a three-dimensional schematic diagram of the tape casting machine provided by the embodiment of the utility model Figure 1 ;

[0021] Figure 5 This is a three-dimensional schematic diagram of the tape casting machine provided by the embodiment of the utility model Figure 2 .

[0022] Description of main component symbols

[0023] 100-rewinding and unwinding device; 10-base; 20-inflatable shaft; 21-shaft body; 21a-first end; 21b-second end; 211-inflatable part; 212-support part; 213-mounting groove; 214-convex top matching hole; 22-first air nozzle component; 23-second air nozzle component; 24-convex key; 241-bottom plate; 242-convex top; 25-airbag; 26-first air pipe; 27-second air pipe; 28-first Inner sleeve of first shaft; 281-first through hole; 29-inner sleeve of second shaft; 291-second through hole; 30-drive assembly; 31-servo motor; 32-active synchronous wheel; 33-driven synchronous wheel; 34-synchronous belt; 35-drive shaft; 40-shaft frame; 50-dust protection cover; 60-connecting rod; 1000-casting machine; 200-film roll; 300-base; 301-film guide roller; 302-slide rail; 303-support rod. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the implementation of the present invention is described in detail below with reference to the specific drawings.

[0026] For the convenience of description, the "front", "rear", "left", "right", "up" and "down" referred to below are consistent with the front, rear, left, right, up and down directions of the drawings themselves, but do not limit the structure of the present invention.

[0027] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings understood by persons of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar expressions used in the specification and claims of this utility model patent application do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a limitation on quantity, but rather indicate the presence of at least one.

[0028] like Figures 1 to 3 As shown, the rewinding and unwinding device 100 provided in this embodiment includes: a base 10, an inflatable shaft 20 rotatably supported on the base 10, and a driving assembly 30 capable of driving the inflatable shaft 20 to rotate around the axis of the inflatable shaft 20; the inflatable shaft 20 includes a hollow shaft body 21, the shaft body 21 has a first end 21a and a second end 21b opposite to each other, a first air nozzle component 22 with a valve core (not shown) is provided on the first end 21a, and a second air nozzle component 23 for connecting to an air source device (not shown) is provided on the second end 21b, a plurality of convex keys 24 and an air bag 25 for pushing the outer end of the convex key 24 out of the outer surface of the shaft body 21 are provided inside the shaft body 21, and the two ends of the air bag 25 are respectively connected to the first air nozzle component 22 and the second air nozzle component 23.

[0029] The above-mentioned rewinding and unwinding device 100 has a shaft body 21 of the inflatable shaft 20 having a first end 21a and a second end 21b relative to each other, a first air nozzle component 22 being provided on the first end 21a, and a second air nozzle component 23 for connecting to an air source device being provided on the second end 21b, a convex key 24 and an air bag 25 being provided inside the shaft body 21, and two ends of the air bag 25 being connected to the first air nozzle component 22 and the second air nozzle component 23 respectively. In this way, the inflatable shaft 20 is continuously supplied with air by an external air source device connected to the second air nozzle component 23, so that the air bag 25 is maintained within a preset air pressure range, and the first air nozzle component 22 is manually deflated during loading and unloading, so that the situation where the roll film cannot be fixed due to air leakage of the inflatable shaft 20 can be avoided, and the structure of the rewinding and unwinding device 100 is more stable and the support effect is better.

[0030] See also Figures 1 to 3The rewinding and unwinding device 100 provided in this embodiment includes a base 10, an inflatable shaft 20 and a driving assembly 30. The inflatable shaft 20 is rotatably supported on the base 10 and can rotate around the axis of the inflatable shaft 20. The driving assembly 30 can be installed on the base 10 or outside the base 10. In this embodiment, the base 10 is installed on the base 10, which is connected to the inflatable shaft 20 and can drive the inflatable shaft 20 to rotate around the axis of the inflatable shaft 20.

[0031] See also Figures 1 to 3 The inflatable shaft 20 provided in this embodiment includes a hollow shaft body 21, the shaft body 21 having a first end 21a and a second end 21b opposite to each other, a first air nozzle component 22 provided on the first end 21a, the first air nozzle component 22 having a valve core (not shown), and a second air nozzle component 23 provided on the second end 21b, the second air nozzle component 23 being used to connect to an air source device (not shown), a plurality of convex keys 24 and an air bag 25 for pushing the outer end of the convex key 24 out of the outer surface of the shaft body 21 are provided inside the shaft body 21, the two ends of the air bag 25 are respectively connected to the first air nozzle component 22 and the second air nozzle component 23, the plurality of convex keys 24 are located on the periphery of the air bag 25 and The airbag 25 is arranged around it. In this embodiment, one end of the airbag 25 is connected to a first air nozzle component 22 having a valve core, and the first air nozzle component 22 can be opened and closed manually, but is not limited to manually. The other end of the airbag 25 is connected to a second air nozzle component 23, and the second air nozzle component 23 is connected to an external air source device and is controlled by a solenoid valve (not shown). That is to say, the first end 21a of the shaft body 21 is a manual deflation end, and the second end 21b is a normally open air end. The airbag 25 is supplied with air through the air source device, so that the interior of the airbag 25 is maintained within a constant preset air pressure, thereby improving the support stability of the inflatable shaft 20.

[0032] from Figure 3 and Figure 4It can be seen that the shaft body 21 includes an inflatable portion 211 and a support portion 212 on the support base 10. The inflatable portion 211 has a mounting groove 213 for accommodating the airbag 25 and the convex key 24; the convex key 24 includes a bottom plate portion 241 and a convex top portion 242. The surface of the inflatable portion 211 is formed with a convex top matching hole 214 that is connected to the mounting groove 213 and for the convex top portion 242 to extend out. In this embodiment, the inflatable portion 211 is used to install the roll film 200 and support the roll film 200. The support portion 212 is used to be installed on the base 10. The inflatable portion 211 has a mounting groove 213. The airbag 25 and the convex key 24 are both installed in the mounting groove 213. The number of the convex top portions 242 of the convex key 24 is, but not limited to, four. The four convex top portions 242 are spaced apart along the axial direction of the inflatable shaft 20. The surface of the inflatable portion 211 is formed with a convex top matching hole 214 that is connected to the mounting groove 213. The convex top The number and position of the matching holes 214 correspond to the convex top portion 242. In this way, after the airbag 25 is inflated from the second air nozzle component 23 through the air source device, the airbag 25 expands and pushes the convex key 24 to move outward, and the outer end of the convex top portion 242 passes through the convex top matching hole 214 and contacts the roll film 200, thereby fixing the roll film 200; after manually opening the first air nozzle component 22, the airbag 25 is deflated, and the convex top portion 242 retracts into the convex top matching hole 214 to facilitate loading and unloading of the roll film 200.

[0033] Please continue to see Figure 3 In this embodiment, a first air tube 26 and a second air tube 27 are provided in the shaft body 21, and the first air tube 26 is respectively connected to the first air nozzle component 22 and the airbag 25; a second air tube 27 is provided in the support portion 212, and the second air tube 27 is respectively connected to the second air nozzle component 23 and the airbag 25.

[0034] Specifically, a first shaft inner sleeve 28 and a second shaft inner sleeve 29 are provided in the inflatable part 211, and the end of the inflatable part 211 away from the support part 212 is connected to the shaft end seat 21c, and the first shaft inner sleeve 28 is respectively abutted against the shaft end seat 21c and the end of the airbag 25, and the first shaft inner sleeve 28 has a first through hole 281 for the first air tube 26 to pass through; the second shaft inner sleeve 29 is respectively abutted against the inner wall of the end of the inflatable part 211 close to the support part 212 and the end of the airbag 25, and the second shaft inner sleeve 29 has a second through hole 291 for the second air tube 27 to pass through. In this way, the position of the airbag 25 in the shaft body 21 can be maintained by the first shaft inner sleeve 28 and the second shaft inner sleeve 29, which facilitates the installation and fixation of the airbag 25.

[0035] The outer surface of the convex top 242 of the convex key 24 provided in this embodiment is provided with an anti-slip structure for abutting against the roll film 200 . The anti-slip structure can be an anti-slip pattern on the surface of the convex top 242 , or an anti-slip layer is provided on the convex top 242 .

[0036] Please return to see Figure 1 and Figure 2 The drive assembly 30 provided in this embodiment is disposed on and supported by the base 10. The drive assembly 30 includes a servo motor 31, an active synchronous pulley 32 connected to the servo motor 31, a driven synchronous pulley 33 connected to the inflatable shaft 20, and a synchronous belt 34 connected to the active synchronous pulley 32 and the driven synchronous pulley 33, respectively. In this way, the servo motor 31 is used for driving, and the transmission method of the active synchronous pulley 32, the driven synchronous pulley 33, and the synchronous belt 34 can ensure transmission stability.

[0037] See also Figure 1 and Figure 2 The drive assembly 30 provided in this embodiment also includes a drive shaft 35 connected to and driven for rotation by a servo motor 31. The drive shaft 35 is parallel to the inflatable shaft 20. In this embodiment, a shaft bracket 40 is provided on the base 10, and the inflatable shaft 20 is mounted on the shaft bracket 40 via a bearing. The servo motor 31 is located on one side of the shaft bracket 40. The servo motor 31 is connected to a reducer. The reducer includes a drive shaft 35. The drive shaft 35 is parallel to the inflatable shaft 20, and the outer end of the drive shaft 35 is flush with the second end 21b of the inflatable shaft 20. In this way, the rewinding and unwinding device 100 has a more compact structure and a smaller size.

[0038] See also Figure 1 and Figure 2 The base 10 provided in this embodiment is provided with a dustproof protective cover 50 , and the base 10 is provided with a connecting rod 60 , one end of the connecting rod 60 is fixed to the base 10 , and the other end is fixed to the dustproof protective cover 50 .

[0039] See also Figure 4 and Figure 5 The casting machine 1000 provided in this embodiment includes the aforementioned unwinding and rewinding device 100 for supporting the film roll 200. In this embodiment, the casting machine 1000 includes a base 300, on which a film guide roller 301 for guiding the movement of the film strip is disposed. The base 300 has a loading and unloading station, which is equipped with the aforementioned unwinding and rewinding device 100 for mounting and supporting the film roll 200.

[0040] See also Figure 4 and Figure 5 In this embodiment, the base 300 is further provided with a slide rail 302 and a support rod 303 slidably mounted on the slide rail 302 . The support rod 303 is used to abut against the first end 21a of the inflatable shaft 20 and support the end of the inflatable shaft 20 on the support rod 303 .

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A reeling and unreeling device, characterized in that: The inflatable shaft comprises a base, an inflatable shaft rotatably supported on the base, and a driving assembly capable of driving the inflatable shaft to rotate around the axis of the inflatable shaft; the inflatable shaft comprises a hollow shaft body, the shaft body having a first end and a second end opposite to each other, the first end being provided with a first air nozzle component having a valve core, the second end being provided with a second air nozzle component for connecting to an air source device, a plurality of convex keys and an air bag for pushing the outer end of the convex key out of the outer surface of the shaft body are provided inside the shaft body, and the two ends of the air bag are respectively connected to the first air nozzle component and the second air nozzle component.

2. The rewinding and unwinding device according to claim 1, characterized in that: The shaft body includes an inflatable part and a supporting part supporting the base, the inflatable part has a mounting groove for accommodating the airbag and the convex key; the convex key includes a bottom plate part and a convex top part, and the surface of the inflatable part is formed with a convex top matching hole that is connected to the mounting groove and for the convex top part to extend out.

3. The rewinding and unwinding device according to claim 2, characterized in that: A first air tube and a second air tube are provided in the shaft body. The first air tube is connected to the first air nozzle component and the air bag respectively. The second air tube is connected to the second air nozzle component and the air bag respectively.

4. The rewinding and unwinding device according to claim 3, characterized in that: A first shaft inner sleeve and a second shaft inner sleeve are provided in the inflatable part, and an end of the inflatable part away from the support part is connected to a shaft end seat, the first shaft inner sleeve is respectively abutted against the shaft end seat and the end of the airbag, and the first shaft inner sleeve has a first through hole for the first air pipe to pass through; the second shaft inner sleeve is respectively abutted against the inner wall of the end of the inflatable part close to the support part and the end of the airbag, and the second shaft inner sleeve has a second through hole for the second air pipe to pass through.

5. The rewinding and unwinding device according to claim 2, characterized in that: The number of the convex top portions of the convex key is four, and the four convex top portions are arranged at intervals along the axial direction of the inflatable shaft.

6. The rewinding and unwinding device according to claim 2, characterized in that: The outer surface of the convex top of the convex key is provided with an anti-slip structure for resisting against the rolled film.

7. The rewinding and unwinding device according to any one of claims 1 to 5, characterized in that: The drive assembly is arranged on the base and supported by the base, and the drive assembly includes a servo motor, an active synchronous wheel connected to the servo motor, a driven synchronous wheel connected to the pneumatic shaft, and a synchronous belt respectively connected to the active synchronous wheel and the driven synchronous wheel.

8. The rewinding and unwinding device according to claim 7, characterized in that: The driving assembly further includes a driving shaft connected to the servo motor and driven to rotate by the servo motor, and the driving shaft and the inflatable shaft are parallel to each other.

9. The rewinding and unwinding device according to claim 7, characterized in that: A dustproof protective cover is provided on the base, and a connecting rod is provided on the base. One end of the connecting rod is fixed to the base, and the other end is fixed to the dustproof protective cover.

10. A tape casting machine, characterized in that: A winding and unwinding device according to any one of claims 1 to 9 for supporting a roll of film.

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