Multi-piece press roller mechanism

Abstract

The utility model provides a kind of multi-piece compression roller mechanism, comprising: pedestal, pedestal has mandrel;Multiple compression roller pieces, compression roller piece has center passage, compression roller piece is movably sleeved outside mandrel by center passage, each compression roller piece is sequentially stacked along the axial direction of mandrel, compression roller piece has the extension state for rolling rubber sheet and the retracted state of disengaging rubber sheet;Retracted drive assembly, compression roller piece has drive passage, drive passage is separately arranged with center passage, retracted drive assembly is connected with pedestal, and at least part of retracted drive assembly is located in drive passage, retracted drive assembly can abut and drive compression roller piece to move to retracted state;Extension drive assembly, extension drive assembly is set on mandrel, and can abut and drive compression roller piece to move to extension state.The utility model solves the problem of high processing difficulty in the prior art multi-piece compression roller mechanism.

Description

Technical Field

[0001] This utility model relates to the field of tire forming and processing technology, and more specifically, to a multi-plate pressure roller mechanism. Background Technology

[0002] Currently, tire forming machines commonly use multi-plate pressure roller mechanisms to better press rubber sheets of different shapes. The plungers in multi-plate pressure roller mechanisms are usually single-acting, meaning that the plungers can only push the pressure rollers out under the drive of gas and cannot actively retract them. It is necessary to add additional plungers so that each pressure roller corresponds to two plungers, both of which are single-acting, one responsible for driving the pressure roller to extend and the other for driving the pressure roller to retract. Alternatively, the plungers can be set to double-acting, with one end driving the pressure roller to extend when inflated and the other end driving the pressure roller to retract when inflated. The above methods of achieving active retraction of the pressure rollers are extremely difficult to manufacture, and the pressure rollers with the same stroke are larger in volume and more expensive. Utility Model Content

[0003] The main objective of this invention is to provide a multi-plate pressure roller mechanism to solve the problem of high processing difficulty in the existing multi-plate pressure roller mechanism.

[0004] To achieve the above objectives, according to one aspect of the present invention, a multi-plate pressure roller mechanism is provided, comprising: a base having a mandrel; a plurality of pressure roller plates, each pressure roller plate having a central channel, the pressure roller plates being movably sleeved on the outside of the mandrel through the central channel, the pressure roller plates being stacked sequentially along the axial direction of the mandrel, the pressure roller plates having an extended state for rolling a film and a retracted state for detaching from the film; a retraction drive assembly, the pressure roller plates having a drive channel, the drive channel being separated from the central channel, the retraction drive assembly being connected to the base, and at least a portion of the retraction drive assembly being located within the drive channel, the retraction drive assembly being capable of abutting and driving the pressure roller plates to move to the retracted state; and an extension drive assembly, the extension drive assembly being disposed on the mandrel and being capable of abutting and driving the pressure roller plates to move to the extension state.

[0005] Furthermore, the drive channel extends through both sides of the pressure roller along the axial direction of the mandrel, and the drive channel extends a predetermined length along the moving direction of the pressure roller.

[0006] Furthermore, there are multiple drive channels, and drive channels are provided on both sides opposite to the central channel, with at least a partial retraction drive component provided in each of the drive channels on both sides.

[0007] Furthermore, the base has an extension section that passes through the drive channel. The retraction drive assembly includes an elastic element that is disposed within the drive channel. Both ends of the elastic element abut against the inner wall of the drive channel and the extension section, respectively, and provide a driving force for the pressure roller to move to the retracted state.

[0008] Furthermore, the extended section extends axially along the mandrel and passes through multiple pressure rollers, with multiple elastic elements, and each pressure roller has an elastic element installed in its drive channel.

[0009] Furthermore, the drive channel has a first end and a second end, which are arranged sequentially along the movement direction of the pressure roller from the retracted state to the extended state. The extended section is located between the first end and the second end. The elastic element is located between the first end and the extended section. When the pressure roller is in the extended state, the length of the elastic element is less than the initial length. Alternatively, the elastic element is located between the second end and the extended section. When the pressure roller is in the extended state, the length of the elastic element is greater than the initial length.

[0010] Furthermore, the retraction drive assembly includes: a drive member connected to the base; and a lifting member that passes through the drive channel and drives the drive member to move within the drive channel. The lifting member abuts against the inner wall of the drive channel and drives the pressure roller to move to the retracted state.

[0011] Furthermore, the lifting member extends axially along the mandrel and passes through all the pressure rollers. Both ends of the lifting member extend out of the pressure rollers. The retraction drive assembly also includes a lifting frame. Both ends of the lifting member are connected to the lifting frame. The lifting frame is driven by the drive member, and the drive member moves the lifting member through the lifting frame.

[0012] Furthermore, the lifting member extends axially along the mandrel and passes through all the pressure rollers. There are multiple driving members, and the two ends of the lifting member are respectively driven and connected to different driving members. The driving members on both sides drive the lifting member to move synchronously.

[0013] Furthermore, the mandrel has a mounting cavity, the extended drive assembly is disposed in the mounting cavity, the mandrel also has an air hole, the air hole communicates with the mounting cavity, and the air hole communicates with the outside of the mandrel.

[0014] The present invention provides a pressure roller with an extended state for rolling the film and a retracted state for detaching from the film. A central channel is provided on the pressure roller, through which the roller is movably fitted onto the outside of a mandrel. An extension drive assembly on the mandrel abuts and drives the roller to the extended state, allowing it to roll the film. A drive channel is also provided on the roller, with at least a portion of the retraction drive assembly positioned within it. This retraction drive assembly abuts and drives the roller to the retracted state, detaching the roller from the film and retracting it. The central channel and drive channel are separated. The extension drive assembly within the central channel drives the roller to extend, while the retraction drive assembly within the drive channel cooperates with the retraction drive assembly outside the drive channel to retract the roller. The components are arranged separately, and the retraction drive assembly is located outside the roller, eliminating the need for more complex processing and reducing manufacturing difficulty. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 A perspective view of the multi-plate pressure roller mechanism of this utility model is shown;

[0017] Figure 2 It shows Figure 1 A cross-sectional schematic diagram of the pressure roller sheet in the middle;

[0018] Figure 3 A cross-sectional schematic diagram of the pressure roller sheet according to Embodiment 2 of this utility model is shown;

[0019] Figure 4 A cross-sectional schematic diagram of the pressure roller sheet according to Embodiment 3 of this utility model is shown.

[0020] The above figures include the following reference numerals:

[0021] 10. Base; 11. Mandrel; 12. Air hole; 13. Extension section; 20. Pressure roller; 21. Center channel; 22. Drive channel; 30. Retraction drive assembly; 31. Drive component; 32. Lifting component; 33. Elastic component; 34. Lifting frame; 40. Extension drive assembly. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0025] To address the high processing difficulty of multi-plate pressure roller mechanisms in existing technologies, this application provides a multi-plate pressure roller mechanism.

[0026] Example 1

[0027] like Figures 1 to 4 The multi-plate pressure roller mechanism shown includes: a base 10, a plurality of pressure roller plates 20, a retraction drive assembly 30, and an extension drive assembly 40. The base 10 has a spindle 11; the pressure roller plates 20 have a central channel 21, and the pressure roller plates 20 are movably sleeved on the outside of the spindle 11 through the central channel 21. Each pressure roller plate 20 is stacked sequentially along the axial direction of the spindle 11. The pressure roller plates 20 have an extended state for rolling the film and a retracted state for detaching from the film; the pressure roller plates 20 have a drive channel 22, which is separated from the central channel 21. The retraction drive assembly 30 is connected to the base 10, and at least a portion of the retraction drive assembly 30 is located within the drive channel 22. The retraction drive assembly 30 can abut against and drive the pressure roller plates 20 to move to the retracted state; the extension drive assembly 40 is disposed on the spindle 11 and can abut against and drive the pressure roller plates 20 to move to the extended state.

[0028] like Figure 1 , Figure 2 As shown, the pressure roller 20 in this embodiment has an extended state for rolling the film and a retracted state for detaching from the film. A central channel 21 is provided on the pressure roller 20. The pressure roller 20 is movably sleeved on the outside of the mandrel 11 through the central channel 21. The extension drive assembly 40 on the mandrel 11 abuts and drives the pressure roller 20 to the extended state, allowing the pressure roller 20 to extend and roll the film. A drive channel 22 is also provided on the pressure roller 20, and at least a portion of the retraction drive assembly 30 is disposed within the drive channel 22. The retraction drive assembly 30 can abut and drive the pressure roller 20 to the extended state. The roller 20 moves to the retracted state, which removes the pressure roller 20 that has finished rolling the film from the film and retracts it. The central channel 21 and the drive channel 22 on the pressure roller 20 are set separately. The extension drive component 40 in the central channel 21 drives the pressure roller 20 to extend. The partial retraction drive component 30 in the drive channel 22 cooperates with the partial retraction drive component 30 outside the drive channel 22 to realize the retraction of the pressure roller 20. The components are arranged separately, and the partial retraction drive component 30 is set outside the pressure roller 20, so there is no need to perform more complex processing on the pressure roller 20, which reduces the processing difficulty.

[0029] like Figure 1 , Figure 2As shown, in this embodiment, taking the base 10 placed vertically upwards as an example, the pressure roller 20 can extend to roll the film when moving downwards, and can retract to detach from the film when moving upwards. The extension drive assembly 40 moves downwards to abut against the lower surface of the central channel 21, and continues to move downwards to drive the pressure roller 20 until it reaches the extended state to roll the film. The retraction drive assembly 30 moves upwards to abut against the upper surface of the central channel 21, and continues to move upwards to drive the pressure roller 20 upwards to detach from the film and retract. In this embodiment, the base 10 can adjust its angle to adjust the arrangement direction of the pressure rollers 20, so that the position of rolling the film corresponds to the actual position of the film, meeting the processing requirements of various angles and improving the flexibility of the multi-roller mechanism for rolling film.

[0030] like Figure 2 As shown, in this embodiment, the drive channel 22 extends through both sides of the pressure roller 20 along the axial direction of the mandrel 11, which can reduce the space occupied by the central channel 21 and the mandrel 11 within the central channel 21. By opening the central channel 21 and the drive channel 22, the integration of each component on the pressure roller 20 is increased, and the space utilization rate is improved. The drive channel 22 extends a predetermined length along the moving direction of the pressure roller 20. The drive channel 22 is elongated, which allows the pressure roller 20 to extend and retract normally while ensuring that the pressure roller 20 does not extend excessively and damage the film, nor does it retract excessively and reduce the rolling efficiency. Moreover, the retraction drive assembly 30 can pass through the drive channels 22 of multiple pressure rollers 20 at the same time, realizing unified control of the pressure rollers 20.

[0031] like Figure 2As shown, there are multiple drive channels 22 in this embodiment, and drive channels 22 are provided on both sides opposite to the central channel 21. The central channel 21 and multiple drive channels 22 are separated one by one. When opening the central channel 21 and drive channels 22, multiple pressure rollers 20 can be stacked together, and then the equipment can process the central channel 21 and drive channels 22 at the same time, reducing the processing difficulty and improving the processing efficiency. Each of the drive channels 22 on both sides is provided with at least a partial retraction drive assembly 30. The partial retraction drive assemblies 30 in the multiple drive channels 22 can abut and drive the pressure roller 20 to move to the retracted state, retracting the pressure roller 20 after the rolling work is completed. The partial retraction drive assemblies 30 in the multiple drive channels 22 on both sides cooperate with each other to improve the retraction efficiency of the pressure roller 20 and ensure the balance of the pressure roller 20. The pressure roller 20 has its own gravity. The retraction drive assemblies 30 in the drive channels 22 on both sides drive the pressure roller 20 at the same time, so that the pressure roller 20 is subjected to balanced force. The pressure roller 20 will not tilt or bend due to uneven driving force, imbalance between gravity and driving force, etc., thus avoiding damage to the pressure roller 20 and / or the film. In this embodiment, two drive channels 22 are set as an example. The two drive channels 22 are symmetrically arranged on both sides of the central channel 21. The retraction drive components 30 in the drive channels 22 on both sides cooperate with each other to abut and drive the pressure roller 20 to move to the retracted state, so that the pressure roller 20 is subjected to a balanced driving force, driving the pressure roller 20 to retract, ensuring that the pressure roller 20 is under force balance, and protecting the pressure roller 20 and the film.

[0032] like Figure 1 , Figure 2 As shown, the retraction drive assembly 30 of this embodiment includes a drive member 31 and a lifting member 32. The drive member 31 is connected to the base 10 and can be a motor, a one-way cylinder, a two-way cylinder, etc. The lifting member 32 is a component that directly cooperates with the pressure roller 20 and is installed in the drive channel 22. The lifting member 32 also drives the drive member 31 to move within the drive channel 22. The lifting member 32 abuts against the inner wall of the drive channel 22 and drives the pressure roller 20 to move to the retracted state. The drive member 31 and the lifting member 32 cooperate to complete the retraction of the pressure roller 20. The drive member 31 and the lifting member 32 are set separately. The lifting member 32 is installed within the drive channel 22, and the drive member 31 is installed outside the pressure roller 20. It is not necessary to install the drive member 31 on the pressure roller 20, which greatly reduces the processing difficulty. Furthermore, in this embodiment, there can be multiple lifting members 32. Lifting members 32 are provided in multiple driving channels 22 on both sides of the central channel 21. The driving member 31 drives the lifting members 32 to abut against and move the pressure roller 20 to the retracted state, thereby completing the retraction of the pressure roller 20, ensuring that the pressure roller 20 is subjected to uniform force, and protecting the pressure roller 20 and the film.

[0033] like Figure 1 , Figure 2As shown, in this embodiment, the lifting member 32 extends axially along the mandrel 11 and passes through all the pressure rollers 20. Both ends of the lifting member 32 extend beyond the pressure rollers 20. In this embodiment, the lifting member 32 is a laterally extending rod-shaped member. The lifting member 32 simultaneously passes through the drive channels 22 of multiple pressure rollers 20, thus allowing the movement of one lifting member 32 to simultaneously control the lifting and retraction of all pressure rollers 20. Furthermore, since drive channels 22 are provided on both sides of the central channel 21 in this embodiment, two lifting members 32 can be provided, with one lifting member 32 passing through each of the drive channels 22 on both sides. This simplifies the structure and makes processing more convenient.

[0034] The retraction drive assembly 30 in this embodiment also includes a lifting frame 34. Both ends of the lifting member 32 are connected to the lifting frame 34. The lifting frame 34 is driven by the drive member 31. The drive member 31 drives the lifting member 32 to move through the lifting frame 34, thereby achieving synchronicity in the movement of the pressure roller 20 driven by the drive member 31. Furthermore, since there are multiple lifting members 32 in this embodiment, and the pressure roller 20 has multiple drive channels 22, with a lifting member 32 passing through each drive channel 22, both ends of each lifting member 32 are connected to the lifting frame 34. The drive member 31 drives the lifting frame 34 to move, and the lifting frame 34 simultaneously drives all the lifting members 32 to move. The lifting members 32 abut against and drive all the pressure roller 20 to move towards the retracted state, which can better achieve synchronicity in the movement of the pressure roller 20 driven by the drive member 31. Because of the setting of the lifting frame 34, only one drive member 31 needs to be set in this embodiment. The drive member 31 can achieve driving cooperation with both ends of all the lifting members 32 through the cooperation between it and the lifting frame 34.

[0035] In an embodiment not shown, the lifting member 32 still extends axially along the mandrel 11 and passes through all the pressure rollers 20. However, this embodiment does not have a lifting frame 34, but instead has multiple driving members 31. The two ends of the lifting member 32 are respectively driven and connected to different driving members 31. The driving members 31 on both sides can synchronously drive the lifting member 32 to move through components such as a controller. The pressure rollers 20 have a certain weight, and the multiple driving members 31 jointly drive the lifting member 32, increasing the driving force, which allows the lifting member 32 to better retract the pressure rollers 20 and improve the retraction efficiency of the pressure rollers 20. Furthermore, the two ends of the lifting members 32 in the multiple driving channels 22 are all connected to different driving members 31. Each driving member 31 synchronously drives the multiple lifting members 32 to retract the pressure rollers 20, which can further improve the retraction efficiency of the pressure rollers 20.

[0036] like Figure 1 , Figure 2As shown, the mandrel 11 in this embodiment has a mounting cavity. The extension drive assembly 40 can be a plunger, which is disposed in the mounting cavity. The plunger rod can extend and abut against the bottom surface of the central channel 21, thereby driving the extension of the pressure roller 20. The mandrel 11 also has an air hole 12, which communicates with the mounting cavity and the outside of the mandrel 11. The air hole 12 can drive the extension drive assembly 40 to abut against and move the pressure roller 20 to the extended state. Air is supplied to the air hole 12 from the outside. When the air hole 12 is supplied with air, the corresponding air path extension drive assembly 40 extends, abuts against the pressure roller 20, and continues to move, driving the pressure roller 20 to extend.

[0037] Furthermore, there is at least one extension drive assembly 40. When there is only one extension drive assembly 40, it passes through all the pressure rollers 20 along the axial direction of the spindle 11. Driven by the air inlet 12, it abuts against and drives all the pressure rollers 20 to move synchronously to the extension state. The moving speed and driving force of all the pressure rollers 20 are the same, and the rolling pressure on the film is also the same. When there are multiple extension drive assemblies 40, each extension drive assembly 40 can correspond to one or more pressure rollers 20. The air path can be designed and arranged as needed to achieve the same driving force on each pressure roller 20 or each group of pressure rollers 20, different driving forces between different pressure rollers 20 or different groups of pressure rollers 20, and different rolling pressure on the film by different pressure rollers 20 or different groups of pressure rollers 20. Different rolling pressure on the film can be achieved by arranging the air path as needed, thereby improving the flexibility of rolling the film by multiple pressure rollers.

[0038] Example 2

[0039] The difference from Embodiment 1 is that the base 10 and the retraction drive assembly 30 have different structural forms.

[0040] like Figure 3As shown, in this embodiment, the base 10 has an extension section 13, which passes through the drive channel 22. The retraction drive assembly 30 includes an elastic element 33, which can be a spring, leaf spring, gas spring, rubber band, rubber, etc. The elastic element 33 is disposed in the drive channel 22, and both ends of the elastic element 33 abut against the inner wall of the drive channel 22 and the extension section 13, respectively, and provide a driving force for the pressure roller 20 to move to the retracted state. When the extension drive assembly 40 abuts against and drives the pressure roller 20 to move to the extension state, it will overcome the resistance of the elastic element 33 and compress or stretch the elastic element 33 in the drive channel 22. In this embodiment, the elastic element 33 is compressed. When the pressure roller 20 finishes rolling the film, the air hole 12 releases air, and the extended drive assembly 40 retracts, the pressure roller 20 will move to the retracted state under the drive of the elastic element 33. There is no need to set up additional drive components 31, lifting frame 34, lifting component 32 and other components, which greatly reduces the processing difficulty. The driving force is provided by the elastic element 33, so there is no need to add drive component 31, which reduces costs. Moreover, the elastic element 33 is easy to repair and replace after damage, which reduces maintenance costs.

[0041] like Figure 3 As shown, in this embodiment, the pressure roller 20 still has multiple drive channels 22, and drive channels 22 are provided on both sides opposite to the central channel 21. Correspondingly, there are multiple extension sections 13, and extension sections 13 are provided in the drive channels 22 on both sides. The extension sections 13 extend along the axial direction of the mandrel 11 and penetrate through multiple pressure rollers 20. At the same time, there are also multiple elastic elements 33 in this embodiment. Each pressure roller 20 has an elastic element 33 in the drive channel 22. Each pressure roller 20 can retract under the drive of the elastic elements 33 in the multiple drive channels 22 provided thereon, avoiding failure to retract due to the excessive weight of the pressure roller 20 itself.

[0042] Furthermore, in this embodiment, the protruding section 13 can penetrate all or part of the pressure rollers 20. Because the elastic element 33 abuts against the inner wall of the drive channel 22 and the protruding section 13 at both ends, it can provide the driving force for the pressure rollers 20 to move to the retracted state. The pressure rollers 20 that are not penetrated by the protruding section 13 cannot be driven to retract by the elastic element 33. Therefore, the retraction of part of the pressure rollers 20 can be achieved as needed. Similarly, the elastic element 33 can be not set in the drive channel 22 of the pressure rollers 20, so that the pressure rollers 20 cannot be retracted under the drive of the elastic element 33, thus achieving partial retraction of the pressure rollers 20 and improving the flexibility of the retraction of the pressure rollers 20. Each pressure roller 20 can be retracted completely, in the same group, or individually under the drive of the elastic element 33, improving the flexibility of the retraction of the pressure rollers 20 in the multi-plate pressure roller mechanism.

[0043] In this embodiment, the drive channel 22 and the elastic element 33 are configured in a one-to-one correspondence, that is, each drive channel 22 is provided with an elastic element 33. In this way, the retraction action of each pressure roller 20 is relatively independent. As needed, some pressure rollers 20 can be retracted, while others can be extended and kept in the extended state under the action of the drive assembly 40. This allows the state of each pressure roller 20 to be controlled separately, so that the multi-pressure roller mechanism forms a rolling area and a non-rolling area to meet different rolling requirements. It can achieve precise rolling of the film and avoid film deformation in the non-rolling area.

[0044] like Figure 3 As shown, the drive channel 22 of this embodiment has a first end and a second end. The first end and the second end are arranged sequentially along the moving direction of the pressure roller 20 from the retracted state to the extended state. Since the base 10 of this embodiment is placed vertically upward, the first end and the second end are arranged from top to bottom. The extended section 13 is located between the first end and the second end. The elastic member 33 of this embodiment is located between the first end and the extended section 13. When the pressure roller 20 is in the extended state, the length of the elastic member 33 is less than the initial length, that is, the elastic member 33 is compressed. When the pressure roller 20 completes the rolling of the film, the air hole 12 releases the air, and after the extended drive assembly 40 is retracted, the extended drive assembly 40 no longer abuts against the pressure roller 20. The elastic member 33 is no longer under the pressure of the pressure roller 20. The elastic member 33 has a driving force to move upward and restore the initial length. The pressure roller 20 will move upward to the retracted state under the drive of the elastic member 33.

[0045] Example 3

[0046] The difference from Embodiment 2 is that the position of the elastic element 33 is different.

[0047] like Figure 4 As shown, in this embodiment, the elastic element 33 is located between the second end and the extended section 13. When the pressure roller 20 is in the extended state, the length of the elastic element 33 is greater than the initial length, that is, the elastic element 33 is stretched. When the pressure roller 20 completes the rolling of the film, the air hole 12 releases air, and the extended drive assembly 40 retracts, the extended drive assembly 40 no longer abuts against the pressure roller 20, and the elastic element 33 is no longer subjected to the tension of the pressure roller 20. The elastic element 33 has a driving force to move upward and restore the initial length, and the pressure roller 20 will move upward to the retracted state under the drive of the elastic element 33.

[0048] It should be noted that "multiple" in the above embodiments refers to at least two.

[0049] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0050] 1. This solves the problem of high processing difficulty in existing multi-plate pressure roller mechanisms;

[0051] 2. The drive channel is set to a predetermined length to ensure that the pressure roller does not extend excessively and damage the film, nor does it retract excessively and reduce the rolling efficiency.

[0052] 3. Drive channels are provided on both sides to ensure that the pressure roller is subjected to balanced force. The pressure roller will not tilt or skew due to uneven driving force or imbalance between gravity and driving force, thus avoiding damage to the pressure roller and / or the film.

[0053] 4. By arranging the air paths as needed, different rolling forces can be applied to the film, improving the flexibility of the multi-roller mechanism in rolling the film.

[0054] 5. Each pressure roller can be retracted all at once, in the same group, or individually under the drive of the elastic element, improving the flexibility of retracting the pressure rollers in the multi-pressure roller mechanism;

[0055] 6. The multi-roller mechanism forms rolling and non-rolling areas to meet different rolling requirements, enabling precise rolling of the film and avoiding film deformation in the non-rolling area.

[0056] 7. The elastic components are easy to repair and replace after damage, reducing maintenance costs.

[0057] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0058] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0059] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0060] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-plate pressure roller mechanism, characterized in that, include: A base (10) having a mandrel (11); Multiple pressure rollers (20) have a central channel (21). The pressure rollers (20) are movably sleeved on the outside of the mandrel (11) through the central channel (21). Each pressure roller (20) is stacked sequentially along the axial direction of the mandrel (11). The pressure rollers (20) have an extended state for rolling the film and a retracted state for detaching from the film. The retraction drive assembly (30) has a drive channel (22) for the pressure roller (20), which is separated from the center channel (21). The retraction drive assembly (30) is connected to the base (10), and at least a portion of the retraction drive assembly (30) is located within the drive channel (22). The retraction drive assembly (30) is capable of abutting and driving the pressure roller (20) to move to the retracted state. An extension drive assembly (40) is disposed on the mandrel (11) and is capable of abutting and driving the pressure roller (20) to move to the extension state.

2. The multi-plate pressure roller mechanism according to claim 1, characterized in that, The drive channel (22) passes through both sides of the pressure roller (20) along the axial direction of the mandrel (11), and the drive channel (22) extends a predetermined length along the moving direction of the pressure roller (20).

3. The multi-plate pressure roller mechanism according to claim 1, characterized in that, There are multiple drive channels (22), and drive channels (22) are provided on both sides opposite to the central channel (21). At least part of the retraction drive assembly (30) is provided in each of the drive channels (22) on both sides.

4. The multi-plate pressure roller mechanism according to claim 1, characterized in that, The base (10) has an extension section (13) that passes through the drive channel (22). The retraction drive assembly (30) includes an elastic element (33) that is disposed in the drive channel (22). Both ends of the elastic element (33) abut against the inner wall of the drive channel (22) and the extension section (13), respectively, and provide a driving force for the pressure roller (20) to move to the retracted state.

5. The multi-plate pressure roller mechanism according to claim 4, characterized in that, The extended section (13) extends along the axial direction of the mandrel (11) and passes through multiple pressure rollers (20). There are multiple elastic elements (33), and each pressure roller (20) is provided with an elastic element (33) in its drive channel (22).

6. The multi-plate pressure roller mechanism according to claim 4, characterized in that, The drive channel (22) has a first end and a second end, the first end and the second end being arranged sequentially along the direction of movement of the pressure roller (20) from the retracted state to the extended state, and the extended section (13) being located between the first end and the second end, wherein, The elastic element (33) is located between the first end and the extended section (13). When the pressure roller (20) is in the extended state, the length of the elastic element (33) is less than the initial length; or The elastic element (33) is located between the second end and the extended section (13). When the pressure roller (20) is in the extended state, the length of the elastic element (33) is greater than the initial length.

7. The multi-plate pressure roller mechanism according to claim 1, characterized in that, The recovery drive assembly (30) includes: A driving element (31) is connected to the base (10); The lifting member (32) passes through the drive channel (22) and is driven to cooperate with the drive member (31). The drive member (31) drives the lifting member (32) to move within the drive channel (22). The lifting member (32) abuts against the inner wall of the drive channel (22) and drives the pressure roller (20) to move toward the retracted state.

8. The multi-plate pressure roller mechanism according to claim 7, characterized in that, The lifting member (32) extends axially along the spindle (11) and passes through all the pressure rollers (20). Both ends of the lifting member (32) extend out of the pressure rollers (20). The retraction drive assembly (30) also includes a lifting frame (34). Both ends of the lifting member (32) are connected to the lifting frame (34). The lifting frame (34) is driven to connect with the drive member (31). The drive member (31) drives the lifting member (32) to move through the lifting frame (34).

9. The multi-plate pressure roller mechanism according to claim 7, characterized in that, The lifting member (32) extends along the axial direction of the spindle (11) and passes through all the pressure rollers (20). There are multiple driving members (31). The two ends of the lifting member (32) are respectively driven and connected to different driving members (31). The driving members (31) on both sides drive the lifting member (32) to move synchronously.

10. The multi-plate pressure roller mechanism according to claim 1, characterized in that, The mandrel (11) has a mounting cavity, the extension drive assembly (40) is disposed in the mounting cavity, the mandrel (11) also has an air hole (12), the air hole (12) communicates with the mounting cavity, and the air hole (12) communicates with the outside of the mandrel (11).

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