Constant-speed rewinding device for cold ironing film

Abstract

The utility model discloses a cold stamping film constant-speed rewinding device which comprises an unwinding shaft and a rewinding shaft used for rewinding a cold stamping film, the rewinding shaft is connected with a rewinding motor, and a tensioning shaft used for tensioning the cold stamping film wound between the unwinding shaft and the rewinding shaft is arranged between the unwinding shaft and the rewinding shaft. The rewinding motor is electrically connected with a control system used for controlling on-off and angular velocity of the rewinding motor, the encoder is used for collecting linear velocity of a cold stamping film, is arranged between the unwinding shaft and the rewinding shaft and is close to the cold stamping film, and the encoder is electrically connected with the control system. The control system is used for controlling the rewinding motor to reduce the angular speed of the rewinding motor after the linear speed of the cold stamping film exceeds the preset speed of the system. According to the rewinding device, the cold stamping film can be rewound at the uniform linear speed, and the situation that the cold stamping film is snapped due to the fact that the linear speed is too high when the cold stamping film is rewound is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cold stamping film rewinding, in particular to a cold stamping film uniform speed rewinding device. Background Art

[0002] When the existing cold stamping film is rewound, the cold stamping film first passes through the tensioning shaft and then passes through the rewinding shaft. The rewinding motor is linked with the rewinding shaft, and the rewinding motor drives the rewinding shaft to rotate, thereby pulling the cold stamping film reel to rotate. The angular velocity of the rewinding motor is a fixed set value. When the diameter of the rewinding shaft becomes larger and larger, the linear speed of the cold stamping film becomes faster and faster, and finally the speed is too fast, causing the cold stamping film to break. Utility Model Content

[0003] The utility model aims to provide a cold stamping film uniform speed rewinding device, which can make the cold stamping film maintain a uniform linear speed for rewinding, and avoid the cold stamping film being broken due to excessive linear speed during rewinding.

[0004] In order to solve the above technical problems, the utility model adopts the following solutions:

[0005] A device for rewinding a cold foil film at a uniform speed includes an unwinding shaft and a rewinding shaft for rewinding the cold foil film, the rewinding shaft is connected to a rewinding motor, a tensioning shaft for tensioning the cold foil film wound between the unwinding shaft and the rewinding shaft is provided between the unwinding shaft and the rewinding shaft, the rewinding motor is electrically connected to a control system for controlling the switch and angular velocity of the rewinding motor, and also includes an encoder for collecting the linear velocity of the cold foil film, the encoder is provided between the unwinding shaft and the rewinding shaft near the cold foil film, the encoder is electrically connected to the control system, and the control system is used to control the rewinding motor to reduce the angular velocity of the rewinding motor after the linear velocity of the cold foil film exceeds the system preset velocity. The encoder itself adopts the existing technology, and the control system adopts the existing technology, which will not be described in detail. Its function is that, through the setting of the encoder, the change of the linear speed of the cold stamping film during rewinding can be measured. The encoder will feed back the collected real-time linear speed of the cold stamping film to the control system. When the linear speed of the cold stamping film exceeds the linear speed preset in the control system, the system will automatically reduce the angular velocity (rotation speed) of the rewinding motor to reduce the linear speed of the cold stamping film to below the linear speed preset in the control system, so that the linear speed of the cold stamping film during rewinding is maintained at about the linear speed preset in the control system, thereby achieving the effect of controlling the uniform speed rewinding of the cold stamping film.

[0006] Furthermore, it also includes a photoelectric switch, which is electrically connected to the control system. The photoelectric switch includes a transmitter and a receiver, which are respectively arranged on the upper and lower opposite sides of the cold foil film between the unwinding shaft and the rewinding shaft. The photoelectric switch itself adopts the existing technology and is not described in detail. Its function is that, through the setting of the photoelectric switch, when the cold foil film is accidentally broken or the rewinding is completed, the photoelectric switch detects that there is no material blocking between the transmitter and the receiver, and transmits a signal to the control system, so that the control system controls the rewinding motor to stop running.

[0007] Furthermore, the photoelectric switch is arranged between the tensioning shaft and the rewinding shaft. Its function is to make the photoelectric switch as close to the rewinding shaft as possible through the setting of the position of the photoelectric switch, so that the cold stamping film is wound on the rewinding shaft as much as possible, and then the photoelectric switch detects the signal of rewinding completion.

[0008] Furthermore, the encoder is arranged between the tensioning shaft and the rewinding shaft. Its function is to make the photoelectric switch as close to the rewinding shaft as possible through the setting of the position of the photoelectric switch, so that after the cold stamping film is wound on the rewinding shaft as much as possible, the photoelectric switch detects the signal of rewinding completion.

[0009] Furthermore, the photoelectric switch is arranged between the encoder and the rewinding shaft. Its function is to make the photoelectric switch as close to the rewinding shaft as possible through the setting of the position of the photoelectric switch, so that the cold stamping film is wound on the rewinding shaft as much as possible, and then the photoelectric switch detects the signal of rewinding completion.

[0010] Furthermore, it also includes a rotating plate, the photoelectric switch and the encoder are both arranged on the rotating plate, the rotating plate is connected to a rotating shaft, the rotating shaft is connected to an adjustment motor, and in the process of the rewinding shaft rewinding the cold stamping film, the adjustment motor drives the rotating plate to rotate around the rotating shaft so that the transmitting end and the receiving end are always located at the upper and lower sides of the cold stamping film. Its function is that, since the diameter of the rewinding shaft will gradually increase in the process of rewinding the cold stamping film, the angle between the cold stamping film between the rewinding shaft and the tensioning shaft and the horizontal plane will gradually increase. Through the setting of the rotating plate, the photoelectric switch and the encoder can be driven to move, so as to avoid the photoelectric switch or the encoder from scratching and damaging the cold stamping film when the angle between the cold stamping film between the rewinding shaft and the tensioning shaft and the horizontal plane changes.

[0011] Furthermore, the rotating shaft is prism-shaped, and the rotating plate is provided with a through hole matching the outer wall of the rotating shaft. Its function is to enable the motor to drive the rotating plate to rotate around the rotating shaft when the rotating shaft is rotated through the design of the rotating shaft shape.

[0012] Furthermore, the rotating shaft is located between the encoder and the tensioning shaft.

[0013] Furthermore, a diameter detection sensor for detecting the thickness change of the rewinding shaft is also included, and the diameter detection sensor is arranged near the rewinding shaft. The diameter detection sensor itself adopts the existing technology and is not described in detail. Its function is to collect the diameter change information of the rewinding shaft through the setting of the diameter detection sensor.

[0014] Furthermore, the diameter detection sensor and the adjustment motor are both electrically connected to the control system, so that the rotation speed of the adjustment motor can be adjusted and changed according to the diameter change information of the rewinding shaft received by the diameter detection sensor.

[0015] The utility model has the beneficial effects:

[0016] 1. Through the setting of the encoder, the change of the linear speed of the cold stamping film during rewinding can be measured. The encoder will feed back the collected real-time linear speed of the cold stamping film to the control system. When the linear speed of the cold stamping film exceeds the linear speed preset in the control system, the system will automatically reduce the angular velocity (rotation speed) of the rewinding motor to reduce the linear speed of the cold stamping film to below the linear speed preset in the control system, so that the linear speed of the cold stamping film during rewinding is maintained at about the linear speed preset in the control system, thereby achieving the effect of controlling the uniform rewinding of the cold stamping film;

[0017] 2. Through the setting of photoelectric switch, when the cold foil film breaks unexpectedly or the rewinding is completed, the photoelectric switch detects that there is no material blocking between the transmitting end and the receiving end, and transmits the signal to the control system, so that the control system controls the rewinding motor to stop running;

[0018] 3. By setting the rotating plate, the photoelectric switch and the encoder can be driven to move, so as to prevent the photoelectric switch or the encoder from scratching and damaging the cold stamping film when the angle between the cold stamping film between the rewinding shaft and the tensioning shaft and the horizontal plane changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of Example 1 when rewinding just begins;

[0020] Figure 2 This is a schematic diagram of the structure of Example 1 after being rewound for a period of time.

[0021] Figure numerals: 1, rewinding shaft; 2, unwinding shaft; 3, cold foil film; 4, tensioning shaft; 5, encoder; 6, photoelectric switch; 601, transmitting end; 602, receiving end; 7, rotating plate; 8, rotating shaft; 9, diameter detection sensor. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0023] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example 1

[0026] A cold foil film uniform speed rewinding device, such as Figure 1 As shown, it includes an unwinding shaft 2 and a rewinding shaft 1 for rewinding the cold foil film 3, the rewinding shaft 1 is connected to a rewinding motor (not shown in the figure), a tensioning shaft 4 for tensioning the cold foil film 3 wound between the unwinding shaft 2 and the rewinding shaft 1 is provided between the unwinding shaft 2 and the rewinding shaft 1, the rewinding motor is electrically connected to a control system (not shown in the figure) for controlling the switch and angular velocity of the rewinding motor, and also includes an encoder 5 for collecting the linear velocity of the cold foil film 3, the encoder 5 is provided between the unwinding shaft 2 and the rewinding shaft 1 near the cold foil film 3, the encoder 5 is electrically connected to the control system, and the control system is used to control the rewinding motor to reduce the angular velocity of the rewinding motor after the linear velocity of the cold foil film 3 exceeds the system preset velocity. The encoder 5 itself adopts the existing technology, and the control system adopts the existing technology, which will not be described in detail. Its function is that, through the setting of the encoder 5, the change of the linear speed of the cold stamping film 3 during rewinding can be measured, and the encoder 5 feeds back the collected real-time linear speed of the cold stamping film 3 to the control system. When the linear speed of the cold stamping film 3 exceeds the linear speed preset in the control system, the system automatically reduces the angular velocity (rotation speed) of the rewinding motor, so that the linear speed of the cold stamping film 3 is reduced to below the linear speed preset in the control system, so that the linear speed of the cold stamping film 3 during rewinding is maintained at about the linear speed preset in the control system, thereby achieving the effect of controlling the cold stamping film 3 to rewind at a uniform speed.

[0027] Specifically, Figure 1As shown, the photoelectric switch 6 is also included. The photoelectric switch 6 is electrically connected to the control system. The photoelectric switch 6 includes a transmitting end 601 and a receiving end 602. The transmitting end 601 and the receiving end 602 are respectively arranged on the upper and lower opposite sides of the cold foil film 3 between the unwinding shaft 2 and the rewinding shaft 1. The photoelectric switch 6 itself adopts the existing technology and is not described in detail. Its function is that through the setting of the photoelectric switch 6, when the cold foil film 3 is accidentally broken or the rewinding is completed, the photoelectric switch 6 detects that there is no material blocking between the transmitting end 601 and the receiving end 602, and transmits a signal to the control system, so that the control system controls the rewinding motor to stop running.

[0028] Specifically, Figure 1 As shown, the photoelectric switch 6 is arranged between the tensioning shaft 4 and the rewinding shaft 1. Its function is to make the photoelectric switch 6 as close to the rewinding shaft 1 as possible through the setting of the position of the photoelectric switch 6, so that the cold stamping film 3 is wound on the rewinding shaft 1 as much as possible, and then the photoelectric switch 6 detects the signal of rewinding completion.

[0029] Specifically, Figure 1 As shown, the encoder 5 is arranged between the tensioning shaft 4 and the rewinding shaft 1. Its function is to make the photoelectric switch 6 as close to the rewinding shaft 1 as possible through the setting of the position of the photoelectric switch 6, so that the cold foil film 3 is wound on the rewinding shaft 1 as much as possible, and then the photoelectric switch 6 detects the signal of rewinding completion.

[0030] Specifically, Figure 1 As shown, the photoelectric switch 6 is arranged between the encoder 5 and the rewinding shaft 1. Its function is to make the photoelectric switch 6 as close to the rewinding shaft 1 as possible through the setting of the position of the photoelectric switch 6, so that the cold foil film 3 is wound on the rewinding shaft 1 as much as possible, and then the photoelectric switch 6 detects the signal of rewinding completion.

[0031] Specifically, Figure 1 As shown, the rotating plate 7 is also included, and the photoelectric switch 6 and the encoder 5 are both arranged on the rotating plate 7. The rotating plate 7 is connected to a rotating shaft 8, and the rotating shaft 8 is connected to an adjusting motor (not shown in the figure). When the rewinding shaft 1 rewinds the cold stamping film 3, the adjusting motor drives the rotating plate 7 to rotate around the rotating shaft 8 so that the transmitting end 601 and the receiving end 602 are always located at the upper and lower sides of the cold stamping film 3. Its function is that, since the diameter of the rewinding shaft 1 will gradually increase during the process of rewinding the cold stamping film 3, the angle between the cold stamping film 3 between the rewinding shaft 1 and the tensioning shaft 4 and the horizontal plane will gradually increase. By setting the rotating plate 7, the photoelectric switch 6 and the encoder 5 can be driven to move, so as to avoid the photoelectric switch 6 or the encoder 5 from scratching and damaging the cold stamping film 3 when the angle between the cold stamping film 3 between the rewinding shaft 1 and the tensioning shaft 4 and the horizontal plane changes.

[0032] Specifically, Figure 1As shown, the rotating shaft 8 is prism-shaped, and the rotating plate 7 is provided with a through hole matching the outer wall of the rotating shaft 8. Its function is that, through the design of the shape of the rotating shaft 8, the motor can drive the rotating plate 7 to rotate around the rotating shaft 8 when the rotating shaft 8 is rotated.

[0033] Specifically, Figure 1 As shown, the rotating shaft 8 is located between the encoder 5 and the tensioning shaft 4 .

[0034] Specifically, Figure 1 As shown, the invention also includes a diameter detection sensor 9 for detecting the thickness change of the rewinding shaft 1, and the diameter detection sensor 9 is arranged near the rewinding shaft 1. The diameter detection sensor 9 itself adopts the existing technology and is not described in detail. Its function is to collect the diameter change information of the rewinding shaft 1 through the arrangement of the diameter detection sensor 9.

[0035] Specifically, Figure 1 As shown, the diameter detection sensor 9 and the adjustment motor are both electrically connected to the control system, so as to adjust the rotation speed of the adjustment motor according to the diameter change information of the rewinding shaft 1 received by the diameter detection sensor 9.

[0036] The working principle of this embodiment is described as follows:

[0037] Specifically, Figure 1 As shown, when the rewinding shaft 1 just starts to rewind the cold stamping film 3, the diameter of the whole formed by the rewinding shaft 1 and the cold stamping film 3 on the rewinding shaft 1 is small, and the angle between the cold stamping film 3 between the rewinding shaft 1 and the tensioning shaft 4 and the horizontal plane is small. The encoder 5 detects the linear velocity of the cold stamping film 3 in real time and transmits it to the control system. When the real-time linear velocity of the cold stamping film 3 exceeds the preset linear velocity of the control system, the control system controls the rewinding motor to reduce the angular velocity, so that the real-time linear velocity of the cold stamping film 3 is reduced to the preset linear velocity, so that the linear velocity of the cold stamping film 3 is maintained at the preset linear velocity, so as to prevent the cold stamping film 3 from being broken due to excessive linear velocity.

[0038] Specifically, Figure 2 As shown, after the rewinding shaft 1 has been working for a period of time, the diameter of the whole formed by the rewinding shaft 1 and the cold foil film 3 on the rewinding shaft 1 gradually increases, and the angle between the cold foil film 3 between the rewinding shaft 1 and the tensioning shaft 4 and the horizontal plane gradually increases. The diameter detection sensor 9 transmits the diameter change information of the whole formed by the rewinding shaft 1 and the cold foil film 3 on the rewinding shaft 1 to the control system. The control system drives the rotating plate 7 to rotate around the rotating shaft 8 according to the diameter change, so that the encoder 5 and the photoelectric switch 6 are always close to the cold foil film 3 and remain separated from the cold foil film 3.

[0039] The above is only a preferred embodiment of the utility model and does not limit the utility model in any form. According to the technical essence of the utility model, within the spirit and principles of the utility model, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the utility model.

Claims

1. A device for uniformly rewinding a cold foil film, comprising an unwinding shaft (2) and a rewinding shaft (1) for rewinding a cold foil film (3), the rewinding shaft (1) being connected to a rewinding motor, a tensioning shaft (4) being arranged between the unwinding shaft (2) and the rewinding shaft (1) for tensioning the cold foil film (3) wound between the unwinding shaft (2) and the rewinding shaft (1), characterized in that: The rewinding motor is electrically connected to a control system for controlling the rewinding motor switch and angular velocity, and also includes an encoder (5) for collecting the linear velocity of the cold stamping film (3). The encoder (5) is arranged between the unwinding shaft (2) and the rewinding shaft (1) near the cold stamping film (3). The encoder (5) is electrically connected to the control system. The control system is used to control the rewinding motor to reduce the angular velocity of the rewinding motor after the linear velocity of the cold stamping film (3) exceeds a preset speed of the system.

2. The cold foil film uniform rewinding device according to claim 1, characterized in that: The invention also comprises a photoelectric switch (6), the photoelectric switch (6) is electrically connected to the control system, the photoelectric switch (6) comprises a transmitting end (601) and a receiving end (602), the transmitting end (601) and the receiving end (602) are respectively arranged on the upper and lower opposite sides of the cold stamping film (3) between the unwinding shaft (2) and the rewinding shaft (1).

3. The cold foil film uniform rewinding device according to claim 2, characterized in that: The photoelectric switch (6) is arranged between the tensioning shaft (4) and the rewinding shaft (1).

4. The cold foil film uniform rewinding device according to claim 3, characterized in that: The encoder (5) is arranged between the tensioning shaft (4) and the rewinding shaft (1).

5. The cold foil film uniform rewinding device according to claim 4, characterized in that: The photoelectric switch (6) is arranged between the encoder (5) and the rewinding shaft (1).

6. The cold foil film uniform speed rewinding device according to claim 5, characterized in that: The invention also comprises a rotating plate (7), the photoelectric switch (6) and the encoder (5) are both arranged on the rotating plate (7), the rotating plate (7) is connected to a rotating shaft (8), and the rotating shaft (8) is connected to an adjusting motor. When the rewinding shaft (1) rewinds the cold stamping film (3), the adjusting motor drives the rotating plate (7) to rotate around the rotating shaft (8) so that the transmitting end (601) and the receiving end (602) are always located at the upper and lower sides of the cold stamping film (3).

7. The cold foil film uniform rewinding device according to claim 6, characterized in that: The rotating shaft (8) is in the shape of a prism, and the rotating plate (7) is provided with a through hole matching the outer wall of the rotating shaft (8).

8. The cold foil film uniform speed rewinding device according to claim 6, characterized in that: The rotating shaft (8) is located between the encoder (5) and the tensioning shaft (4).

9. The cold foil film uniform rewinding device according to claim 6, characterized in that: It also comprises a diameter detection sensor (9) for detecting the thickness change of the rewinding shaft (1); the diameter detection sensor (9) is arranged near the rewinding shaft (1).

10. The cold foil film uniform speed rewinding device according to claim 9, characterized in that: The diameter detection sensor (9) and the adjustment motor are both electrically connected to the control system.

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