Paper tube fixing device for PE wrapping film

Abstract

The utility model relates to the technical field of PE film paper tube fixing parts, in particular to a paper tube fixing device for a PE wrapping film. According to the technical scheme, the device comprises a rack body used for fixing and a paper tube body wound by a PE winding film body, a connecting tube used for fixedly installing the paper tube body is further installed on the side face of the rack body, and a movable fixing assembly is installed on the inner wall of the connecting tube; the movable fixing assembly comprises a driving motor which is assembled and connected with the inner wall of the connecting cylinder and a clamping piece which is used for clamping and fixing the paper cylinder main body; the end part of the connecting cylinder is connected with a mounting disc, and the mounting disc and the rack main body are assembled and connected through a bolt; the connecting cylinder is of a hollow cylindrical structure. Through mechanical structure innovation and control, the bottleneck of the traditional paper tube fixing technology is broken through, the paper tube fixing device flexibly adapts to fixing and clamping of paper tube bodies with different tube diameters, and the production efficiency, precision and cost effectiveness of PE wrapping films are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of PE film paper tube fixing components, and in particular to a paper tube fixing device for PE stretch film. Background Technology

[0002] PE stretch film generally refers to heat shrink film. Heat shrink film is a type of shrink film. It is used in the sale and transportation of various products, primarily for securing, covering, and protecting them. Shrink film must possess high puncture resistance, good shrinkage, and a certain amount of shrinkage stress. In the production process of PE stretch film, the paper tube serves as the supporting carrier for the film roll, and its fixing effect directly affects the rolling quality and production efficiency of the stretch film. Traditionally, interference fits or manual clamps are used for fixing. Traditional fixing methods have the following drawbacks: Narrow compatibility: They can only match a single specification of paper tube (inner diameter tolerance ±0.5mm). Changing to a different inner diameter paper tube (e.g., 76mm→152mm) requires replacing the entire fixing shaft, resulting in downtime exceeding 30 minutes per instance; Low positioning accuracy: Manual centering deviation can reach ±2mm, leading to film roll eccentricity and a scrap rate as high as 8%-12%; Uncontrollable clamping force: Too tight, it can easily damage thin paper tubes (wall thickness <1.5mm); Too loose, it will slip during high-speed winding (slippage rate exceeds 5% at speeds >200m / min); High maintenance costs: Frequent loading and unloading cause wear on the fixing shaft (annual roughness increase of 2-3μm), requiring periodic grinding or replacement (cost ¥2000 / time). Existing technologies such as pneumatic grippers (CN208931872U) can adjust the spacing, but manual centering is time-consuming and lacks sufficient accuracy, making it difficult to meet the needs of multi-variety, high-precision production. For the reasons mentioned above, this application proposes a PE stretch film paper tube fixing device with a flexible and adjustable fixing method. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a PE wrapping film paper tube fixing device with a flexible and adjustable fixing method.

[0004] The technical solution of this utility model is: a paper tube fixing device for PE stretch film, including a frame body for fixing and a paper tube body for winding and rolling the PE stretch film body. A connecting tube for fixing the paper tube body is also installed on the side of the frame body, and a movable fixing component is installed on the inner wall of the connecting tube.

[0005] The movable fixing assembly includes a drive motor assembled and connected to the inner wall of the connecting cylinder and a clamping component for clamping and fixing the paper tube body.

[0006] Optionally, the end of the connecting cylinder is connected to a mounting plate, and the mounting plate is assembled and connected to the frame body by bolts.

[0007] Optionally, the connecting cylinder is a hollow cylindrical structure, and both the upper and lower walls of the connecting cylinder are provided with guide openings in the shape of strips.

[0008] Optionally, the output end of the drive motor is connected to a threaded rod, and the other end of the threaded rod is fixedly connected to the inner wall of the connecting cylinder through a circular disc.

[0009] Optionally, the outer ring of the threaded rod is threadedly connected to a threaded connecting block, and the top and bottom of the threaded connecting block are fixedly connected to connecting blocks.

[0010] Optionally, the connecting block passes through the guide opening and is slidably disposed with the inner wall of the guide opening, and a clamping element is assembled and connected to the end of the connecting block away from the threaded connecting block.

[0011] Optionally, the locking member includes a contact portion, a progressive portion, and an extension portion;

[0012] The connecting block is connected to a connecting frame on its side, and the extension part is provided with a threaded groove on its side. The connecting frame is rotatably connected with a bolt that is adapted to the threaded groove.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] This utility model uses a connecting cylinder with the smallest diameter to accommodate the mounting and fixing of paper tube bodies with the smallest diameter. Through the clamping parts and the drive motor, paper tube bodies with different diameters and lengths can be clamped and fixed. On the one hand, the progressive part is used to clamp the inner wall of paper tube bodies with different diameters, and on the other hand, the progressive part is used to clamp and fix both ends of the paper tube body.

[0015] Furthermore, the fastening components can be quickly replaced by connecting brackets and bolts, which can be used to replace damaged fastening components, thereby facilitating the rapid maintenance of the fixing device.

[0016] In summary, this utility model, through mechanical structure innovation and control, breaks through the bottleneck of traditional paper tube fixing technology, flexibly adapts to the fixing and clamping of paper tube bodies with different diameters, and significantly improves the efficiency, precision and cost-effectiveness of PE stretch film production. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of this utility model is provided;

[0018] Figure 2 A partial structural schematic diagram of this utility model is provided;

[0019] Figure 3 for Figure 2 A schematic diagram of the exploded structure;

[0020] Figure 4 This is a schematic diagram of the clamping parts, connecting blocks, and threaded connection blocks.

[0021] Figure label:

[0022] 1. Main frame;

[0023] 2. Paper tube body; 21. PE stretch film body;

[0024] 3. Connecting cylinder; 30. Guide port;

[0025] 4. Moving and fixing components; 41. Drive motor; 42. Threaded rod; 43. Threaded connecting block; 44. Connecting block; 45. Clamping component; 451. Contact part; 452. Progressive part; 453. Extension part; 46. Connecting frame; 47. Bolt. Detailed Implementation

[0026] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0027] The components of the embodiments of this disclosure, which are typically described and shown in the accompanying drawings, can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of embodiments of this disclosure provided in the drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure.

[0028] All other embodiments obtained by those skilled in the art based on the embodiments in this disclosure without inventive effort are within the scope of protection of this disclosure.

[0029] In the description of this disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this disclosure 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 disclosure.

[0030] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" 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 disclosure based on the specific circumstances.

[0031] Example 1

[0032] like Figure 1 - Figure 3 As shown, the present invention proposes a paper tube fixing device for PE stretch film, including a frame body 1 for fixing and a paper tube body 2 for winding and rolling PE stretch film body 21. A connecting tube 3 for fixing the paper tube body 2 is also installed on the side of the frame body 1. An installation plate is connected to the end of the connecting tube 3. The installation plate is connected to the frame body 1 by bolt assembly. The connecting tube 3 is a hollow cylindrical structure, and guide openings 30 in the shape of strips are opened on the upper and lower walls of the connecting tube 3. A movable fixing component 4 is installed on the inner wall of the connecting tube 3.

[0033] like Figure 2 and Figure 3 As shown, the movable fixing assembly 4 includes a drive motor 41 assembled and connected to the inner wall of the connecting cylinder 3 and a clamping member 45 for clamping and fixing the paper tube body 2. The clamping member 45 protrudes from the connecting cylinder 3. The output end of the drive motor 41 is connected to a threaded rod 42. The outer ring of the threaded rod 42 is threaded and connected to a threaded connecting block 43. The top and bottom of the threaded connecting block 43 are fixedly connected to connecting blocks 44. The other end of the threaded rod 42 is fixedly connected to the inner wall of the connecting cylinder 3 through a circular disc. The connecting block 44 passes through the guide opening 30 and slides against the inner wall of the guide opening 30. Combined with the setting of the guide opening 30, the connecting block 44 is moved horizontally, thereby realizing the stable horizontal movement of the two clamping members 45 set on the same side. The end of the connecting block 44 away from the threaded connecting block 43 is assembled and connected to the clamping member 45. The clamping member 45 includes a contact part 451, a progressive part 452 and an extension part 453. The progressive part 452 is sloped.

[0034] In this embodiment, the paper tube body 2, which is wrapped with PE stretch film body 21, is placed between two connecting tubes 3, and two sets of drive motors 41 are started simultaneously, causing the threaded rod 42 to rotate. While the threaded rod 42 rotates, the threaded connecting block 43 is guided along the thread on the outer surface of the threaded rod 42 and the limiting guide of the guide port 30 and the connecting block 44, so that the clamping parts 45 provided on the two connecting tubes 3 move closer to each other. When the inner diameter of the paper tube body 2 is greater than the maximum diameter of the connecting tube 3, the contact part 451 contacts the inner wall of the paper tube body 2. Under the continuous pushing action of the clamping part 45, combined with the setting of the progressive part 452, the inner wall of the paper tube body 2 is clamped, which can adapt to the clamping and fixing of paper tube bodies 2 with different pipe diameters. The fixing is convenient and fast, which is suitable for the efficient production of PE stretch film.

[0035] Example 2

[0036] like Figure 4As shown, based on Embodiment 1, a connecting frame 46 is connected to the side of the connecting block 44, and a threaded groove is provided on the side of the extension part 453. A bolt 47 that is adapted to the threaded groove is rotatably connected to the connecting frame 46.

[0037] In this embodiment, the bolt 47 facilitates the replacement and removal of the clamping part 45, enabling rapid replacement of damaged components and adapting to the needs of high-efficiency processing workshops.

[0038] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A paper tube fixing device for PE stretch film, comprising a frame body (1) for fixing and a paper tube body (2) for winding and coiling PE stretch film body (21), characterized in that: The side of the frame body (1) is also equipped with a connecting cylinder (3) for fixing the paper tube body (2), and a movable fixing component (4) is installed on the inner wall of the connecting cylinder (3); The movable fixing assembly (4) includes a drive motor (41) assembled and connected to the inner wall of the connecting cylinder (3) and a clamping member (45) for clamping and fixing the paper tube body (2).

2. The paper tube fixing device for PE stretch film according to claim 1, characterized in that, The end of the connecting cylinder (3) is connected to a mounting plate, and the mounting plate is connected to the frame body (1) by bolt assembly.

3. The paper tube fixing device for PE stretch film according to claim 1, characterized in that, The connecting cylinder (3) is a hollow cylindrical structure, and the upper and lower walls of the connecting cylinder (3) are provided with guide openings (30) in the shape of strips.

4. The paper tube fixing device for PE stretch film according to claim 1, characterized in that, The output end of the drive motor (41) is connected to a threaded rod (42), and the other end of the threaded rod (42) is fixedly connected to the inner wall of the connecting cylinder (3) through a circular disc.

5. The paper tube fixing device for PE stretch film according to claim 4, characterized in that, The outer ring of the threaded rod (42) is threadedly connected to a threaded connecting block (43), and the top and bottom of the threaded connecting block (43) are fixedly connected to connecting blocks (44).

6. The paper tube fixing device for PE stretch film according to claim 5, characterized in that, The connecting block (44) passes through the guide port (30) and is slidably disposed with the inner wall of the guide port (30). A clamping member (45) is assembled and connected to one end of the connecting block (44) away from the threaded connecting block (43).

7. A paper tube fixing device for PE stretch film according to claim 6, characterized in that, The clamping member (45) includes a contact portion (451), a progressive portion (452), and an extension portion (453); The connecting block (44) is connected to a connecting frame (46) on its side, and the extension part (453) has a threaded groove on its side. The connecting frame (46) is rotatably connected to a bolt (47) that is adapted to the threaded groove.

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