Device for solving warping problem of composite paper

Abstract

The utility model belongs to the related technical field of packaging and printing corollary equipment, and discloses a device for solving the warping problem of composite paper, which is integrally arranged on the upstream side of a film unwinding group of a compound machine and comprises a support frame, a front guide rail group and a rear guide rail group, wherein the front end and the rear end of the support frame are respectively formed by a front pneumatic shaft and a rear pneumatic shaft which are arranged in parallel along the vertical direction, and each pneumatic shaft can perform telescopic motion along the vertical direction; the front guide rail set is arranged at the front end of the supporting frame and at least comprises two front guide rollers which stretch across the two front pneumatic shafts respectively. The rear guide rail set is arranged at the front end of the supporting frame and at least comprises two rear guide rollers which stretch across the two rear pneumatic shafts respectively. According to the utility model, the stroke of the composite film before reaching the film unwinding group of the compound machine can be properly increased in a manner of compact structure and convenience in operation and control, and the tensile tension borne by the composite film is buffered, so that the warping problem is effectively solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of packaging and printing equipment, and more specifically, relates to a device for solving the warping of composite paper. Background Technology

[0002] Currently in the packaging industry, composite paper is prone to warping after lamination, which may lead to production failures or a decline in product quality.

[0003] To address the above technical problems, existing technologies mainly employ two methods. One is the relatively mature physical anti-warping method, which uses an anti-warping roller and performs stretching and scraping operations in the opposite direction of paper warping to cause the composite paper to warp in the opposite direction, thereby reducing warping to some extent. However, although this method is widely used, in practice it has been found that the paper still exhibits a rebound phenomenon after a period of time following cutting, and it cannot completely solve the warping problem. The other method involves coating, baking, and molding a film, but this method is not suitable for positioning paper because it requires high registration accuracy.

[0004] Accordingly, further research and improvement are urgently needed in this field to better meet the comprehensive needs of high-quality and efficient composite paper processing. Utility Model Content

[0005] To address one or more of the above-mentioned defects or needs in the existing technology, this utility model provides a device for solving the warping problem of composite paper. By arranging the device upstream of the film unwinding group of the laminating machine and making targeted research and improvements on its structure and setting, the stroke of the composite film before reaching the film unwinding group of the laminating machine can be appropriately increased, and the tensile tension on the composite film can be buffered, thereby more effectively solving the warping problem. In addition, the device has a compact overall structure, is easy to operate, and the height of the entire device can be flexibly adjusted by a pneumatic shaft, so different stroke adjustments can be performed according to different working conditions and different types of composite paper.

[0006] To achieve the above objectives, according to this utility model, a device for solving the warping of composite paper is provided, characterized in that the device is integrally arranged on the upstream side of the film unwinding group of the laminating machine for conveying the film to be laminated, and includes a support frame, a front guide rail group, and a rear guide rail group, wherein:

[0007] The front end of the support frame is formed by two parallel front pneumatic shafts along the vertical direction, and the rear end of the support frame is formed by two parallel rear pneumatic shafts along the vertical direction. Each front and rear pneumatic shaft can perform telescopic movement along the vertical direction.

[0008] The front guide rail assembly is disposed at the front end of the support frame and includes a first front guide roller and a second front guide roller, each spanning between the two front pneumatic shafts, wherein the first front guide roller is mounted at the head of the front pneumatic shaft and the second front guide roller is mounted at the tail of the front pneumatic shaft.

[0009] The rear guide rail assembly is disposed at the front end of the support frame and includes a first rear guide roller and a second rear guide roller, each spanning between the two rear pneumatic shafts, wherein the first rear guide roller is mounted at the head of the rear pneumatic shaft and the second rear guide roller is mounted at the tail of the rear pneumatic shaft.

[0010] As a further preferred embodiment of this utility model, the tail ends of the front and rear pneumatic shafts are evenly provided with scale markings to indicate the distance of the extension and retraction of each pneumatic shaft.

[0011] As a further preferred embodiment of the present invention, the front guide rail assembly further includes a third front guide roller, which is installed in the middle of the front pneumatic shaft and spans between the two front pneumatic shafts.

[0012] As a further preferred embodiment of the present invention, the rear guide rail assembly further includes a third rear guide roller, which is installed in the middle of the rear pneumatic shaft and spans between the two rear pneumatic shafts.

[0013] As a further preferred embodiment of this utility model, the first, second, and third front guide rollers of the front guide rail assembly are rotatably mounted on the front pneumatic shaft.

[0014] As a further preferred embodiment of this utility model, the first rear guide roller, the second rear guide roller, and the third rear guide roller of the rear guide rail assembly are rotatably mounted on the rear pneumatic shaft.

[0015] As a further preferred embodiment of the present invention, the device further includes a horizontal base plate for fixing the front and rear ends of the support frame.

[0016] As a further preferred embodiment of the present invention, the above-mentioned device further includes a pneumatic valve for driving the front pneumatic shaft and the rear pneumatic shaft, thereby causing each pneumatic shaft to perform telescopic movement in the vertical direction.

[0017] As a further preferred embodiment of this invention, each component of the above-mentioned device is a modular structure that is easy to replace.

[0018] In summary, compared with the prior art, the above-described technical solution conceived by this utility model has the following main technical advantages:

[0019] (1) This utility model fully analyzes the actual working conditions and causes of warping in the production of packaging composite paper. By designing an anti-warping device and making targeted research and improvements on its structure and setting method, the stroke of the composite film before reaching the unwinding group of the composite machine can be appropriately increased, and the tensile tension on the composite film can be buffered, thereby more effectively solving the warping problem.

[0020] (2) This utility model further improves the specific structural composition and setting method of the above-mentioned device, and can make flexible adjustments by using the pneumatic shafts at the front and rear ends of the support frame, thereby changing the overall height of the support frame. This can efficiently and quickly increase / decrease the stroke length of the composite membrane when passing through the support frame, thereby more specifically making the tensile tension of the composite membrane under different types and working conditions receive different buffers.

[0021] (3) The device of this utility model has a compact overall structure and is easy to operate. At the same time, each component is easy to disassemble and replace and can be reused, which helps to improve printing quality and printing efficiency. Therefore, it is especially suitable for processing applications such as packaging composite paper. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a device for solving the warping of composite paper according to a preferred embodiment of this application;

[0023] Figure 2 It is used for display Figure 1 A schematic diagram of the structure of a single pneumatic shaft in the system;

[0024] Figure 3 This is a schematic diagram of the first and second front guide rollers being installed across the two front pneumatic shafts, taking the front end of the support frame of this application as an example.

[0025] Figure 4 This is a schematic diagram of the first, second and third front guide rollers being installed across the two front pneumatic shafts, taking the front end of the support frame of this application as an example.

[0026] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0027] 1-Front pneumatic shaft; 2-Rear pneumatic shaft; 11-First front guide roller; 12-Second front guide roller; 13-Third front guide roller; 21-First rear guide roller; 22-Second rear guide roller; 23-Third rear guide roller; 101-Scale mark; P-The film to be laminated. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0030] It should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, 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 application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] Figure 1 This is a schematic diagram of the overall structure of a device for solving the warping of composite paper according to a preferred embodiment of this application. See below for further details. Figure 1 To explain this utility model in more detail.

[0034] like Figure 1 As shown, the device of this utility model is arranged on the upstream side of the film unwinding group of the laminating machine for conveying the film P to be laminated, and mainly includes a support frame, a front guide rail group and a rear guide rail group.

[0035] The support frame has a front end and a rear end, on which multiple overlapping guide rails are arranged to form a continuous conveying path for the membrane P to be composited. Specifically, the front end of the support frame is formed by two parallel front pneumatic shafts 1 along the vertical direction, and the rear end of the support frame is formed by two parallel rear pneumatic shafts 2 along the vertical direction. Each of the front pneumatic shafts 1 and the rear pneumatic shafts 2 can perform telescopic movements along the vertical direction.

[0036] You can view them at the same time. Figure 2 Each pneumatic shaft has a retractable protrusion at its tail, which allows the pneumatic shaft to move along the axial direction (corresponding to...) via a control element such as a pneumatic valve. Figure 1 The vertical direction of the object undergoes a stretching motion, thereby changing the overall length.

[0037] You can view them at the same time. Figure 3 The front guide rail assembly is located at the front end of the support frame and includes a first front guide roller 11 and a second front guide roller 12 that span between the two front pneumatic shafts 1, wherein the first front guide roller 11 is installed at the head of the front pneumatic shaft 1 and the second front guide roller 12 is installed at the tail of the front pneumatic shaft 1.

[0038] Similarly, the rear guide rail assembly is located at the front end of the support frame and includes a first rear guide roller 21 and a second rear guide roller 22, each spanning between the two rear pneumatic shafts 2, wherein the first rear guide roller 21 is mounted at the head of the rear pneumatic shaft 2 and the second rear guide roller 22 is mounted at the tail of the rear pneumatic shaft 2.

[0039] According to a preferred embodiment of this utility model, the tail ends of the front pneumatic shaft 1 and the rear pneumatic shaft 2 are evenly provided with scale marks to indicate the distance of the extension and retraction of each pneumatic shaft. In this way, it can be used to more accurately adjust to the required scale range for membranes of different widths, which is more convenient for operation.

[0040] According to a preferred embodiment of the present invention, such as Figure 1 and Figure 4 As shown, the front guide rail assembly may further include a third front guide roller 13, which is mounted in the middle of the front pneumatic shaft 1 and spans between the two front pneumatic shafts 1. Correspondingly, the rear guide rail assembly may further include a third rear guide roller 23, which is mounted in the middle of the rear pneumatic shaft 2 and spans between the two rear pneumatic shafts 2.

[0041] According to another preferred embodiment of the present invention, the device further includes a horizontal base plate for fixing the front and rear ends of the support frame.

[0042] According to another preferred embodiment of the present invention, the above-mentioned device further includes a pneumatic valve for driving the front pneumatic shaft 1 and the rear pneumatic shaft 2, thereby causing each pneumatic shaft to perform telescopic movement in the vertical direction.

[0043] Furthermore, all components of the aforementioned device are modular structures that are easy to replace.

[0044] The working principle and usage process of this utility model will be explained in detail below.

[0045] The inventor of this utility model conducted an in-depth analysis of the actual working conditions during the production of packaging composite paper and the causes of warping. He found that the main reason for the warping of composite paper is that the film to be laminated will still be overstretched due to the minimum unwinding tension. After the film and paper are bonded, the film is affected by the rebound force, which eventually causes the paper to warp longitudinally. Moreover, this situation becomes more obvious as the film becomes narrower and the paper becomes thinner.

[0046] Based on the above technical analysis, this utility model proposes to add an additional device on the upstream side of the unwinding station of the existing conventional laminating machine to solve the warping of the composite paper. Its working principle is that during the production process of composite paper, the film to be laminated is stretched forward by the traction tension of the rubber roller on the one hand, and is also flattened and prevented from loosening by the rear control tension of the film unwinding device itself on the other hand. These two opposing forces can cause the film to be overstretched.

[0047] By designing this device, the tensile tension of the film can be appropriately buffered by increasing the stroke between the film to be laminated and the film unwinding seat of the laminator. Specifically, when the applied force is constant, the longer the film stroke, the better the release of tensile force. More specifically, in this invention, the support frame is designed as a pneumatic telescopic frame. The length of the film stroke can be adjusted by controlling the length of the pneumatic shaft (i.e., the length of the entire support frame) at both its front and rear ends. Under the same applied force, a longer film stroke results in a smaller tensile force, and thus a smaller rebound force when laminated onto the paper, and vice versa.

[0048] In addition, the height of the entire device can be controlled by a pneumatic valve, thereby realizing the stroke control of the film to be laminated. This makes it more flexible and convenient to solve the problem of tension stretching of various wide films. Moreover, after lamination, the film has almost no rebound warping due to the release of tension through the guide roller group, which effectively solves the warping problem of laminated paper.

[0049] In summary, the device according to this utility model can appropriately increase the stroke of the composite film before it reaches the unwinding group of the laminating machine in a compact and easy-to-operate manner, and buffer the tensile tension on the composite film, thereby more effectively solving the warping problem. At the same time, it can perform different stroke adjustments according to different working conditions and different types of composite paper, so it is particularly suitable for processing and application of various packaging composite papers, and has good practical value and application prospects.

[0050] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for solving the warping of composite paper, characterized in that, The device is positioned upstream of the unwinding section of the laminating machine for conveying the film (P) to be laminated, and includes a support frame, a front guide rail assembly, and a rear guide rail assembly, wherein: The front end of the support frame is formed by two parallel front pneumatic shafts (1) along the vertical direction, and the rear end of the support frame is formed by two parallel rear pneumatic shafts (2) along the vertical direction. Each front pneumatic shaft (1) and rear pneumatic shaft (2) can perform telescopic movement along the vertical direction. The front guide rail assembly is disposed at the front end of the support frame and includes a first front guide roller (11) and a second front guide roller (12) that span between the two front pneumatic shafts (1), wherein the first front guide roller (11) is mounted at the head of the front pneumatic shaft (1) and the second front guide roller (12) is mounted at the tail of the front pneumatic shaft (1). The rear guide rail assembly is disposed at the front end of the support frame and includes a first rear guide roller (21) and a second rear guide roller (22) that span between the two rear pneumatic shafts (2), wherein the first rear guide roller (21) is mounted at the head of the rear pneumatic shaft (2) and the second rear guide roller (22) is mounted at the tail of the rear pneumatic shaft (2).

2. The apparatus as claimed in claim 1, characterized in that, The tail ends of the front pneumatic shaft (1) and the rear pneumatic shaft (2) are uniformly marked with scale marks (101) to indicate the distance of the extension and retraction of each pneumatic shaft.

3. The apparatus as described in claim 2, characterized in that, The front guide rail assembly also includes a third front guide roller (13), which is mounted in the middle of the front pneumatic shaft (1) and spans between the two front pneumatic shafts (1).

4. The apparatus as described in claim 3, characterized in that, The rear guide rail assembly also includes a third rear guide roller (23), which is mounted in the middle of the rear pneumatic shaft (2) and spans between the two rear pneumatic shafts (2).

5. The apparatus as described in claim 4, characterized in that, The first front guide roller (11), the second front guide roller (12) and the third front guide roller (13) of the front guide rail assembly are rotatably mounted on the front pneumatic shaft (1).

6. The apparatus as claimed in claim 5, characterized in that, The first rear guide roller (21), the second rear guide roller (22) and the third rear guide roller (23) of the rear guide rail assembly are rotatably mounted on the rear pneumatic shaft (2).

7. The apparatus according to any one of claims 1-6, characterized in that, The device also includes a horizontal base plate for fixing the front and rear ends of the support frame.

8. The apparatus as claimed in claim 7, characterized in that, The above-mentioned device also includes a pneumatic valve for driving the front pneumatic shaft (1) and the rear pneumatic shaft (2), thereby causing each pneumatic shaft to perform telescopic movement in the vertical direction.

9. The apparatus as claimed in claim 8, characterized in that, All components of the aforementioned device are modular structures that are easy to replace.

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