Film pulling device and film laminating machine

Abstract

The utility model belongs to the technical field of compression roller drive, disclose a kind of film traction device and laminating machine. The device includes traction roller, compression wheel, pressure supply mechanism and elastic lifting mechanism, at least two compression wheels are arranged, and pressure supply mechanism includes at least two cylinders, each cylinder is correspondingly connected to a compression wheel, and the compression wheel can be moved along the direction close to traction roller, and elastic lifting mechanism can drive the compression wheel to move along the direction away from traction roller. By compressing the various positions of the film to the traction roller with multiple compression wheels, the pressure on different positions of the film due to the compression wheel tends to balance, thereby avoiding the deviation and wrinkle phenomenon caused by uneven force of the compression roller in the prior art. At the same time, since the cylinder drive is used, the input air pressure of multiple cylinders only needs to be adjusted to the same value, so that the pressure on different positions of the film due to the compression wheel can be quickly and conveniently adjusted, and the balanced and balanced pressure effect is more easily achieved.

Description

Technical Field

[0001] This utility model relates to the field of pressure roller drive technology, and in particular to a film traction device and a film coating machine. Background Technology

[0002] During the film traction process of an automatic laminating machine, such as Figure 1 As shown, a pressure roller needs to be added to the traction roller. The pressure roller applies pressure to press the film between the pressure roller and the traction roller, which increases the friction and makes the film and the traction roller run synchronously to achieve the traction effect.

[0003] During the traction process, a pressure supply mechanism applies force to both ends of the pressure roller, thereby applying pressure to the film. However, the forces acting on both ends of the pressure roller are prone to imbalance, resulting in a situation where one end of the pressure roller has a larger pressure than the other. This not only leads to uneven stress on the pressure roller and traction roller, making them prone to failure, but also causes the film to easily deviate and wrinkle. Adjusting the forces acting on both ends of the pressure roller is quite difficult, and the adjustment process is lengthy and difficult to balance.

[0004] Therefore, there is an urgent need for a film traction device and a film coating machine to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a film traction device and a film coating machine that can prevent film deviation and wrinkling, and is easy to adjust.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A membrane traction device includes:

[0008] A traction roller, wherein the axial direction of the traction roller is set along a preset direction;

[0009] At least two pressure rollers are arranged along the preset direction, the axial direction of the pressure rollers is arranged along the preset direction, and the distance between the pressure rollers and the traction rollers is adjustable.

[0010] A pressure supply mechanism, comprising at least two cylinders, each cylinder being drivenly connected to one of the pressure rollers and capable of moving the pressure rollers in a direction close to the traction roller;

[0011] An elastic lifting mechanism is driven to the pressure roller and can drive the pressure roller to move in a direction away from the traction roller.

[0012] Preferably, the film traction device further includes at least two pressure roller supports, the two ends of which are rotatably connected to the rotating shaft of the pressure roller, and the middle part of which is drively connected to the output shaft of the cylinder.

[0013] Preferably, the air inlets of the cylinders in the pressure supply mechanism are arranged in parallel.

[0014] Preferably, the pressure supply mechanism further includes a frame that extends along the preset direction, and a plurality of cylinders are fixedly mounted on the frame and arranged along the preset direction.

[0015] Preferably, the elastic lifting mechanism includes a transmission component and an elastic component. The transmission component is movably mounted on the frame. The output shaft of the cylinder is driven to one end of the transmission component, and the other end of the transmission component is driven to the pressure roller. The elastic component is driven to the transmission component and the frame.

[0016] Preferably, the transmission member includes a flange portion and a shaft portion, the flange portion protruding from the shaft portion in the radial direction, one end of the elastic member abutting the flange portion and capable of deforming when the transmission member moves toward the traction roller.

[0017] Preferably, the elastic element includes a spring, one end of which abuts against the flange portion, and the other end of which is fixedly connected to or abuts against the frame.

[0018] Preferably, the frame includes a first part and a second part, with an installation space formed between the first part and the second part, the flange being disposed in the installation space, the output shaft of the cylinder passing through the first part and being drivenly connected to the flange, and the shaft passing through the second part and being drivenly connected to the pressure roller.

[0019] Preferably, the second part is provided with a plurality of bushings, and the shaft portion slides through the bushings.

[0020] A film laminating machine includes a film traction device as described above.

[0021] The beneficial effects of this invention are as follows: By pressing the film against the traction roller at various positions using multiple pressure rollers, and with each pressure roller receiving the force of a corresponding cylinder, the pressure on different positions of the film due to the pressure rollers tends to be balanced, thus avoiding the deviation and wrinkling phenomena caused by uneven force application of the pressure rollers in the prior art. Furthermore, since cylinder drive is used, simply adjusting the input air pressure of multiple cylinders to the same value allows for quick and convenient adjustment of the pressure on different positions of the film due to the pressure rollers, making it easier to achieve a balanced and uniform pressure effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the traction roller and pressure roller in the prior art;

[0023] Figure 2 This is a structural diagram of the diaphragm traction device when the cylinder is working in this utility model;

[0024] Figure 3 yes Figure 2 A magnified view of a portion of the transmission component;

[0025] Figure 4 This is a structural diagram of the diaphragm traction device when the cylinder is not working in this utility model;

[0026] Figure 5 yes Figure 4 A magnified view of a portion of the transmission component.

[0027] In the diagram: 100, traction roller; 200, pressure roller; 300, film;

[0028] 11. Pressure roller; 12. Pressure roller bracket; 21. Cylinder; 211. Output shaft; 22. Two-position three-way solenoid valve; 31. Transmission component; 311. Flange part; 312. Shaft part; 32. Elastic component; 4. Frame; 5. Bushing. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," and "abutting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] The following is based on the appendix Figure 2 To be continued Figure 5 This invention introduces the film traction device and film coating machine provided by this utility model.

[0034] like Figure 2 , Figure 3 As shown, in this embodiment, the film traction device mainly includes a traction roller 100, pressure rollers 11, a pressure supply mechanism, and an elastic lifting mechanism. The traction roller 100 is oriented along a preset direction and can rotate around that direction. At least two pressure rollers 11 are adjustablely positioned between themselves and the traction roller 100. The pressure rollers 11 are also oriented along the preset direction, and at least two pressure rollers 11 are arranged in this preset direction. The pressure supply mechanism includes at least two cylinders 21, each cylinder 21 being correspondingly connected to one pressure roller 11 and capable of moving the pressure roller 11 closer to the traction roller 100. The elastic lifting mechanism is connected to the pressure roller 11 and can drive the pressure roller 11 to move away from the traction roller 100.

[0035] Specifically, in this embodiment, the preset direction is horizontal. When the cylinder 21 does not act on the pressure roller 11, such as Figure 4 , Figure 5 As shown, under the action of the elastic lifting mechanism, the pressure roller 11 can move away from the traction roller 100, thereby maintaining a distance between the pressure roller 11 and the traction roller 100, facilitating the insertion of the end of the film 300 between the traction roller 100 and the pressure roller 11. After the end of the film 300 is inserted, as... Figure 2 , Figure 3 As shown, at this time, the action of the cylinder 21 overcomes the force of the elastic lifting mechanism, causing the pressure roller 11 to move in a direction close to the traction roller 100. This allows the multiple pressure rollers 11 to press each position of the film 300 against the traction roller 100. Then, by driving the traction roller 100 to rotate, the film 300 can be pulled to move by friction.

[0036] By pressing various positions of the film 300 against the traction roller 100 using multiple pressure rollers 11, and with each pressure roller 11 being subjected to the force of a corresponding cylinder 21, the pressure on different positions of the film 300 due to the pressure rollers 11 tends to be balanced, thus avoiding the deviation and wrinkling phenomena caused by uneven force application from the pressure rollers 200 in the prior art. Furthermore, since the film is driven by cylinders 21, simply adjusting the input air pressure of multiple cylinders 21 to the same value allows for quick and convenient adjustment of the pressure on different positions of the film 300 due to the pressure rollers 11, making it easier to achieve a balanced and uniform pressure effect.

[0037] like Figure 2 As shown, preferably, the air inlets of the cylinders 21 in the pressure supply mechanism are arranged in parallel, so that multiple cylinders 21 can output force under the same air pressure drive, and each pressure roller 11 can apply the same pressure to the film 300. Specifically, in this embodiment, all cylinders 21 are double-acting cylinders, and the first air ports of multiple cylinders 21 are connected in parallel to a two-position three-way solenoid valve 22, and the second air ports of multiple cylinders 21 are also connected in parallel to the two-position three-way solenoid valve 22. By controlling the two-position three-way solenoid valve 22, multiple cylinders 21 can be driven to extend and retract synchronously at the same time. In abnormal states such as power outages, the characteristics of the double-acting cylinders can be used to keep the pressure rollers 11 from moving, ensuring that the film 300 is accurately pressed and held between the pressure rollers 11 and the traction roller 100.

[0038] like Figures 2 to 3As shown, in this embodiment, the film traction device further includes at least two pressure roller supports 12. The two ends of each pressure roller support 12 are rotatably connected to the rotating shaft of the pressure roller 11, and the middle part of each pressure roller support 12 is drive-connected to the output shaft 211 of the cylinder 21. Specifically, each pressure roller support 12 includes two vertical ends and one horizontal end. The horizontal end extends in a preset direction (i.e., horizontal direction), and the two vertical ends are respectively connected to one end of the horizontal end. One end of each vertical end is connected to the horizontal end, and the other end extends towards the traction roller 100. The pressure roller 11 has a rotating shaft, one end of which is connected to a vertical end, and the other end is connected to the other vertical end, thereby rotatably mounting the pressure roller 11 onto the pressure roller support 12. The horizontal end is drive-connected to the cylinder 21, allowing the cylinder 21 to move the pressure roller 11 via the pressure roller support 12 without affecting the normal rotation of the pressure roller 11.

[0039] Continue to refer to Figure 2 , Figure 3 As shown, in this embodiment, the pressure supply mechanism further includes a frame 4, which extends along a preset direction. A plurality of cylinders 21 are fixedly mounted on the frame 4, and these cylinders 21 are arranged along the preset direction. By mounting the plurality of cylinders 21 onto the frame 4, each cylinder 21 has the same distance from the traction roller 100, thereby further ensuring that when the cylinders 21 apply force to the pressure rollers 11, each pressure roller 11 can apply the same pressure to different positions on the film 300.

[0040] like Figure 3 , Figure 5 As shown, in this embodiment, the elastic lifting mechanism includes a transmission member 31 and an elastic member 32. The transmission member 31 is movably mounted on the frame 4. The output shaft 211 of the cylinder 21 is drivenly connected to one end of the transmission member 31, and the other end of the transmission member 31 is drivenly connected to the pressure roller 11. The elastic member 32 is drivenly connected between the transmission member 31 and the frame 4. The cylinder 21 can apply a force to the pressure roller 11 through the transmission member 31, thereby causing the pressure roller 11 to move towards the traction roller 100. The elastic member 32 can apply a spring force to the transmission member 31, causing the pressure roller 11 to move away from the traction roller 100. Therefore, when the cylinder 21 is not in the working state, that is, when the output shaft 211 of the cylinder 21 is in a freely movable state, under the action of the elastic member 32, the transmission member 31 and the pressure roller 11 will move away from the traction roller 100, creating a gap between the pressure roller 11 and the traction roller 100 that facilitates the insertion of the film 300. When the cylinder 21 is working, by controlling the air pressure, the output shaft 211 can overcome the effect of the spring force and move the transmission component 31 and the pressure roller 11 toward the direction close to the traction roller 100, until the pressure roller 11 presses the film 300 onto the surface of the traction roller 100.

[0041] Specifically, the transmission component 31 includes a flange portion 311 and a shaft portion 312. The flange portion 311 protrudes from the shaft portion 312 in the radial direction. One end of the elastic element 32 abuts against the flange portion 311 and is capable of deformation when the transmission component 31 moves toward the traction roller 100. In this embodiment, the elastic element 32 includes a spring, which is sleeved on the shaft portion 312. One end of the spring abuts against the flange portion 311, and the other end of the spring is fixedly connected to or abuts against the frame 4. When the cylinder 21 drives the transmission component 31 to move toward the traction roller 100, the output shaft 211 of the cylinder 21 abuts against the side of the flange portion 311 away from the spring, thereby pushing the transmission component 31 and the pressure roller 11. At this time, the spring undergoes compression deformation between the flange portion 311 and the frame 4, generating elastic force. When the cylinder 21 is not in operation, the spring force will drive the flange 311 to move away from the frame 4, thus achieving the effect of moving the pressure roller 11 away from the traction roller 100.

[0042] Of course, in some other embodiments, other elastic elements 32 such as torsion springs and sheet springs can also be used to achieve a similar effect of driving the pressure roller 11 away from the traction roller 100. This utility model does not make specific limitations on this.

[0043] Furthermore, in this embodiment, the frame 4 includes a first part and a second part, with an installation space formed between the first and second parts. A flange 311 is disposed within the installation space. The output shaft 211 of the cylinder 21 passes through the first part and is connected to the flange 311 in a driving connection. The shaft 312 passes through the second part and is connected to the pressure roller 11 in a driving connection. The first and second parts can be plates with perforated structures, thereby protecting structures such as springs within the installation space. The perforated structure allows the output shaft 211 of the cylinder 21 and the shaft 312 of the transmission component 31 to pass through, and also guides the output shaft 211 and the shaft 312, ensuring that the movement direction of the pressure roller 11 does not deviate.

[0044] Preferably, the second part is provided with multiple bushings 5, the shaft portion 312 slides through the bushing 5, and the end of the shaft portion 312 close to the traction roller 100 is fixedly connected to the pressure roller bracket 12, thereby achieving a better positioning effect for the pressure roller 11.

[0045] This utility model also provides a laminating machine, which includes the aforementioned film traction device. By pressing various positions of the film 300 against the traction roller 100 with multiple pressure rollers 11, and with each pressure roller 11 being subjected to the force of a corresponding cylinder 21, the pressure on different positions of the film 300 due to the pressure rollers 11 tends to be balanced, thereby avoiding the deviation and wrinkling phenomena caused by uneven force application by the pressure rollers 200 in the prior art. At the same time, since the film is driven by cylinders 21, it is only necessary to adjust the input air pressure of multiple cylinders 21 to the same value to quickly and conveniently adjust the pressure on different positions of the film 300 due to the pressure rollers 11, making it easier to achieve a balanced and uniform pressure effect.

[0046] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A membrane traction device, characterized in that, include: A traction roller (100) is provided with its axis oriented along a predetermined direction. At least two pressure rollers (11) are arranged along the preset direction, the axial direction of the pressure rollers (11) is arranged along the preset direction, and the distance between the pressure rollers (11) and the traction rollers (100) is adjustable. The pressure supply mechanism includes at least two cylinders (21), each cylinder (21) being drivenly connected to one of the pressure rollers (11) and capable of moving the pressure rollers (11) in a direction close to the traction roller (100); An elastic lifting mechanism is drivenly connected to the pressure roller (11) and can drive the pressure roller (11) to move in a direction away from the traction roller (100).

2. The film traction device according to claim 1, characterized in that, The film traction device also includes at least two pressure roller brackets (12), the two ends of the pressure roller brackets (12) are rotatably connected to the rotating shaft of the pressure roller (11), and the middle part of the pressure roller brackets (12) is drive-connected to the output shaft (211) of the cylinder (21).

3. The film traction device according to claim 1, characterized in that, The air inlets of the cylinder (21) in the pressure supply mechanism are arranged in parallel.

4. The film traction device according to claim 1, characterized in that, The pressure supply mechanism also includes a frame (4), which extends along the preset direction. A plurality of cylinders (21) are fixedly mounted on the frame (4), and the plurality of cylinders (21) are arranged along the preset direction.

5. The film traction device according to claim 4, characterized in that, The elastic lifting mechanism includes a transmission component (31) and an elastic component (32). The transmission component (31) is movably mounted on the frame (4). The output shaft (211) of the cylinder (21) is driven to one end of the transmission component (31), and the other end of the transmission component (31) is driven to the pressure roller (11). The elastic component (32) is driven to the transmission component (31) and the frame (4).

6. The film traction device according to claim 5, characterized in that, The transmission member (31) includes a flange (311) and a shaft (312). The flange (311) protrudes from the shaft (312) in the radial direction. One end of the elastic member (32) abuts against the flange (311) and is capable of deforming when the transmission member (31) moves toward the traction roller (100).

7. The film traction device according to claim 6, characterized in that, The elastic element (32) includes a spring, one end of which abuts against the flange (311), and the other end of which is fixedly connected to or abuts against the frame (4).

8. The film traction device according to claim 7, characterized in that, The frame (4) includes a first part and a second part, with an installation space formed between the first part and the second part. The flange (311) is disposed in the installation space. The output shaft (211) of the cylinder (21) passes through the first part and is connected to the flange (311) in a driving connection. The shaft (312) passes through the second part and is connected to the pressure roller (11) in a driving connection.

9. The film traction device according to claim 8, characterized in that, The second part is provided with a plurality of bushings (5), and the shaft (312) slides through the bushings (5).

10. A laminating machine, characterized in that, It includes the film traction device as described in any one of claims 1-9.

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