Multi-layer thickened pipe barrel structure

Abstract

The utility model discloses a multilayer thickening type pipe barrel structure which comprises a multilayer pipe barrel, a movable supporting rod, a sliding connecting rod and a cutting knife, a plurality of clamping openings are formed in the two ends of the multilayer pipe barrel, every two clamping openings form a group, and the two clamping openings are symmetrically distributed relative to the neutral axis of the multilayer pipe barrel. The multiple movable supporting rods and the two symmetrical bayonets form a group, the movable supporting rods are arranged in the bayonets and connected with the multi-layer pipe barrel in a clamped mode through the bayonets, side supporting rods are further arranged on the left end face of the multi-layer pipe barrel, the lower ends of the side supporting rods are fixedly connected with the left end face of the multi-layer pipe barrel, and the multiple sliding connecting rods are fixedly connected with the side supporting rods. The adjacent sliding connecting rods are in threaded connection, the left end face of the sliding connecting rod located on the leftmost side is in threaded connection with the side supporting rod, and one end of each sliding connecting rod penetrates through the cutting knife and is in sliding connection with the cutting knife. The utility model has the beneficial effects that the coiled film winding drum is not easy to fall off, and the aim of splitting the film can be fulfilled.

Description

Technical Field

[0001] The utility model relates to the technical field related to paper tubes used for stretch films, in particular to a multi-layer thickened tube structure. Background Art

[0002] Because traditional film rolls are cylindrical, sometimes the middle tube will fall off from the rolled film. In addition, large rolls of film are generally continuous, which makes it difficult for users to split them as needed when spreading them out.

[0003] The Chinese patent publication number is CN220448258U, and the authorization announcement date is February 6, 2024. The disclosed coating roller includes a tube for winding PVC protective film. The tube is provided with support shafts that are clamped to the tube at both ends. The two support shafts are rotatably connected to two hanging plates at one end outside the tube. The hanging plates are arranged vertically. A bidirectional screw is threaded between the two hanging plates. One of the hanging plates is machined with a reverse threaded hole that cooperates with the bidirectional screw, and the other hanging plate is machined with a positive threaded hole that cooperates with the bidirectional screw. The bidirectional screw is rotatably mounted in a U-shaped frame. One end of the bidirectional screw passes through the U-shaped frame and extends to the outside of the U-shaped frame. The end of the bidirectional screw on the outside of the U-shaped frame is connected and fixed with a handle. The handle and the bidirectional screw are arranged perpendicular to each other. The utility model has the following beneficial effects: it can replace the PVC protective film without disassembling parts, thereby improving the efficiency of PVC protective film replacement. The disadvantage of this utility model is that the rolled film roll is easy to fall off, which is not helpful for splitting the film. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art that the rolled film roll is easy to fall off and is of no help in splitting the film, and provides a multi-layer thickened tube structure that is not easy to fall off and can help split the film.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A multi-layer thickened tube structure includes a multi-layer tube, a movable support rod, a sliding connecting rod and a cutting knife. Several bayonet holes are provided on both ends of the multi-layer tube, two of the bayonet holes are in a group and the two bayonet holes are symmetrically distributed about the neutral axis of the multi-layer tube. There are several movable support rods and they are in a group with two symmetrical bayonet holes. The movable support rod is placed in the bayonet hole and is clamped with the multi-layer tube through the bayonet hole. The left end face of the multi-layer tube is also provided with a side support rod, and the lower end of the side support rod is fixedly connected to the left end face of the multi-layer tube. There are several sliding connecting rods, and adjacent sliding connecting rods are threadedly connected. The left end face of the sliding connecting rod located on the far left is threadedly connected to the side support rod. One end of the sliding connecting rod passes through the cutting knife and is slidably connected to the cutting knife.

[0007] When in use, first wrap the film on the multi-layer tube, then insert the movable support rod into the bayonet of the multi-layer tube, so that both ends of the movable support rod are against the inner side of the film, so that the inner film has a certain tension and is not easy to separate from the multi-layer tube. Then, when cutting is needed, several sliding connecting rods are connected and lengthened according to the length of the multi-layer tube and connected to the side support rods, and then a cutting knife is put on the sliding connecting rod. When cutting, the film is against the cutting knife, and the cutting knife is allowed to slide on the sliding connecting rod to complete the cutting. When cutting is not needed, the cutting knife can be removed, so that the rolled film roll is not easy to fall off and can help to split the film.

[0008] Preferably, both ends of the movable support rod are provided with a movable rod and a groove, one end of the movable rod being placed in the groove, the other end of the movable rod passing through a bayonet and being placed outside the multi-layer tube, the other end of the movable rod having an arcuate cross-section, a spring being provided in the groove, one end of the spring being fixedly connected to the bottom surface of the groove, the other end of the spring being fixedly connected to one end of the movable rod. The spring enables the movable rod to be adapted to multi-layer tubes of different diameters.

[0009] Preferably, a first retaining ring is provided on the inner side of the groove, the outer side of the first retaining ring being fixedly connected to the inner side of the groove, a second retaining ring is provided on one end of the movable rod, the second retaining ring being fixedly connected to the outer side of the movable rod, the second retaining ring being placed between the groove and the first retaining ring, the outer diameter of the second retaining ring being larger than the inner diameter of the first retaining ring, and the movable rod being engaged with the movable support rod through the cooperation of the second retaining ring and the first retaining ring. The cooperation of the first retaining ring and the second retaining ring can prevent the movable rod from falling off the movable support rod.

[0010] Preferably, the right side of the side support rod is provided with a plurality of connectors 1, which are evenly distributed vertically. A connecting groove and a second connector are respectively provided at each end of the sliding connecting rod. The second connector is fixedly connected to the sliding connecting rod. The sliding connecting rods are threadedly connected to adjacent sliding connecting rods through the cooperation of the front and rear connecting grooves and the second connector. The sliding connecting rod on the far left is threadedly connected to the side support rod through the cooperation of the connecting groove and the first connector. The first connector facilitates connection with the sliding connecting rod, and the connecting groove and the second connector facilitate the connection of different numbers of sliding connecting rods to accommodate films of different widths.

[0011] Preferably, the cutting blade is provided with a through hole and a blade. The cutting blade is slidably connected to a sliding connecting rod via the through hole. The blade is positioned between the sliding connecting rod and the multi-layer tube, and the upper end surface of the blade is fixedly connected to the lower end surface of the cutting blade. The through hole facilitates movement of the cutting blade on the sliding connecting rod, and the blade then cuts the film.

[0012] Preferably, the blade is shaped to be wide on the left and narrow on the right, which facilitates cutting along the moving direction and is less likely to damage the film in the opposite direction.

[0013] The beneficial effects of the utility model are as follows: the rolled film roll is not easy to fall off, which can help the purpose of dividing the film; the spring can help the movable rod to be suitable for multi-layer tubes with different diameters; the cooperation of the retaining ring 1 and the retaining ring 2 can prevent the movable rod from falling off the movable support rod; the connecting head 1 is convenient for connection with the sliding connecting rod, and the connecting groove and the connecting head 2 are convenient for connecting different numbers of sliding connecting rods to adapt to films of different widths; the through hole facilitates the movement of the cutting knife on the sliding connecting rod, and then the blade cuts the film; the blade is wide on the left and narrow on the right, which is convenient for cutting along the moving direction, and it is not easy to damage the film in the opposite direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a cross-sectional view of the main view of the present utility model;

[0016] Figure 3 yes Figure 2 AA cross-section diagram;

[0017] Figure 4 yes Figure 2 An enlarged view of detail B;

[0018] Figure 5 yes Figure 3 Magnified view of detail C.

[0019] In the figure: 1. Multi-layer tube, 2. Movable support rod, 3. Side support rod, 4. Sliding connecting rod, 5. Cutting knife, 6. Bayonet, 7. Movable rod, 8. Groove, 9. Spring, 10. Retaining ring 1, 11. Retaining ring 2, 12. Connector 1, 13. Connecting groove, 14. Connector 2, 15. Through hole, 16. Blade. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1 to 3 In the embodiment, a multi-layer thickened tube structure is provided, which includes a multi-layer tube 1, a movable support rod 2, a sliding connecting rod 4 and a cutting knife 5. Several bayonet holes 6 are provided on both ends of the multi-layer tube 1. Two bayonet holes 6 form a group and the two bayonet holes 6 are symmetrically distributed about the neutral axis of the multi-layer tube 1. There are several movable support rods 2 and they form a group with two symmetrical bayonet holes 6. The movable support rod 2 is placed in the bayonet hole 6 and is clamped with the multi-layer tube 1 through the bayonet hole 6. The left end face of the multi-layer tube 1 is also provided with a side support rod 3. The lower end of the side support rod 3 is fixedly connected to the left end face of the multi-layer tube 1. There are several sliding connecting rods 4. Adjacent sliding connecting rods 4 are threadedly connected. The left end face of the sliding connecting rod 4 located on the far left is threadedly connected to the side support rod 3. One end of the sliding connecting rod 4 passes through the cutting knife 5 and is slidably connected to the cutting knife 5.

[0022] like Figure 3 and Figure 4 As shown, a movable rod 7 and a groove 8 are provided on both ends of the movable support rod 2. One end of the movable rod 7 is placed in the groove 8, and the other end of the movable rod 7 passes through the bayonet 6 and is placed outside the multi-layer tube 1. The cross-section of the other end of the movable rod 7 is arc-shaped, and a spring 9 is provided in the groove 8. One end of the spring 9 is fixedly connected to the inner bottom surface of the groove 8, and the other end of the spring 9 is fixedly connected to one end of the movable rod 7.

[0023] like Figure 3 and Figure 4 As shown, a retaining ring 10 is provided on the inner side of the groove 8, and the outer side of the retaining ring 10 is fixedly connected to the inner side of the groove 8. A retaining ring 11 is provided on one end of the movable rod 7, and the retaining ring 11 is fixedly connected to the outer side of the movable rod 7. The retaining ring 11 is placed between the groove 8 and the retaining ring 10. The outer diameter of the retaining ring 11 is larger than the inner diameter of the retaining ring 10. The movable rod 7 is clamped with the movable support rod 2 through the cooperation of the retaining ring 11 and the retaining ring 10.

[0024] like Figure 3 and Figure 4As shown, a plurality of connectors 12 are provided on the right side surface of the side support rod 3, and the connectors 12 are evenly distributed up and down. The two ends of the sliding connecting rod 4 are respectively provided with a connecting groove 13 and a connector 2 14, and the connector 2 14 is fixedly connected to the sliding connecting rod 4. The sliding connecting rods 4 are threadedly connected with the adjacent sliding connecting rods 4 through the cooperation of the front and rear connecting grooves 13 and the connector 2 14. The sliding connecting rod 4 located on the far left is threadedly connected with the side support rod 3 through the cooperation of the connecting groove 13 and the connector 1 12.

[0025] like Figure 1 and Figure 2 As shown, the cutting knife 5 is provided with a through hole 15 and a blade 16. The cutting knife 5 is slidingly connected to the sliding connecting rod 4 through the through hole 15. The blade 16 is placed between the sliding connecting rod 4 and the multi-layer tube 1. The upper end surface of the blade 16 is fixedly connected to the lower end surface of the cutting knife 5.

[0026] like Figures 1 to 3 As shown, the blade 16 is shaped to be wider on the left and narrower on the right.

[0027] When in use, first wrap the film around the multi-layer tube 1, then press the movable rod 7 into the groove 8, and insert the movable support rod 2 into the bayonet 6 of the multi-layer tube 1. Then the spring 9 will bounce the movable rod 7 outward, and the retaining ring 10 will block the retaining ring 2 11, so that one end of the arc-shaped movable rod 7 will be against the inner side of the film. In this way, the inner film will have a certain tension and will not be easily separated from the multi-layer tube 1. Then, when cutting is required, several sliding connecting rods 4 will be connected to the length of the multi-layer tube 1 through the matching connection of the connector 2 14 and the connection 13 according to the length of the multi-layer tube 1. And connect the connecting groove 13 at one end with a connecting head 12 on the side support rod 3, and then pass the through hole 15 of the cutting knife 5 through the sliding connecting rod 4. When cutting, the film is against the blade 16, and the cutting knife 5 is allowed to slide on the sliding connecting rod 4 to complete the cutting. The blade 16 is gradually shortened in the cutting direction, which is convenient for cutting during sliding and will not cut the film when moving in the opposite direction. When cutting is not needed, the cutting knife 5 can be removed or the blade 16 can be rotated in other directions, so that the rolled film roll is not easy to fall off and can help to split the film.

Claims

1. A multi-layer thickened tube structure, characterized in that: The utility model comprises a multi-layer tube (1), a movable support rod (2), a sliding connecting rod (4) and a cutting knife (5), wherein a plurality of bayonets (6) are provided on both ends of the multi-layer tube (1), two bayonets (6) form a group and the two bayonets (6) are symmetrically distributed about the neutral axis of the multi-layer tube (1), the movable support rod (2) has a plurality of bayonets and forms a group with the two symmetrical bayonets (6), the movable support rod (2) is placed in the bayonets (6) and is clamped with the multi-layer tube (1) through the bayonets (6), the left end face of the multi-layer tube (1) is further provided with a side support rod (3), the lower end of the side support rod (3) is fixedly connected to the left end face of the multi-layer tube (1), the sliding connecting rod (4) has a plurality of adjacent sliding connecting rods (4), the left end face of the sliding connecting rod (4) located on the far left is threadedly connected to the side support rod (3), and one end of the sliding connecting rod (4) passes through the cutting knife (5) and is slidingly connected to the cutting knife (5).

2. A multi-layer thickened tube structure according to claim 1, characterized in that: Both ends of the movable support rod (2) are provided with a movable rod (7) and a groove (8), one end of the movable rod (7) is placed in the groove (8), and the other end of the movable rod (7) passes through the bayonet (6) and is placed outside the multi-layer tube (1), the cross-section of the other end of the movable rod (7) is arc-shaped, and a spring (9) is provided in the groove (8), one end of the spring (9) is fixedly connected to the inner bottom surface of the groove (8), and the other end of the spring (9) is fixedly connected to one end of the movable rod (7).

3. A multi-layer thickened tube structure according to claim 2, characterized in that: A retaining ring 1 (10) is provided on the inner side surface of the groove (8), and the outer side surface of the retaining ring 1 (10) is fixedly connected to the inner side surface of the groove (8). A retaining ring 2 (11) is provided on one end of the movable rod (7), and the retaining ring 2 (11) is fixedly connected to the outer side surface of the movable rod (7). The retaining ring 2 (11) is placed between the groove (8) and the retaining ring 1 (10), and the outer diameter of the retaining ring 2 (11) is larger than the inner diameter of the retaining ring 1 (10). The movable rod (7) is clamped with the movable support rod (2) through the cooperation of the retaining ring 2 (11) and the retaining ring 1 (10).

4. The multi-layer thickened tube structure according to claim 1, characterized in that: A plurality of connectors (12) are provided on the right side surface of the side support rod (3), and the connectors (12) are evenly distributed up and down. The two ends of the sliding connection rod (4) are respectively provided with a connection groove (13) and a connector (14), and the connector (14) is fixedly connected to the sliding connection rod (4). The sliding connection rods (4) are threadedly connected to the adjacent sliding connection rods (4) through the cooperation of the front and rear connection grooves (13) and the connector (14). The sliding connection rod (4) located on the far left is threadedly connected to the side support rod (3) through the cooperation of the connection groove (13) and the connector (12).

5. The multi-layer thickened tube structure according to claim 1, characterized in that: The cutting knife (5) is provided with a through hole (15) and a blade (16). The cutting knife (5) is slidably connected to the sliding connecting rod (4) through the through hole (15). The blade (16) is placed between the sliding connecting rod (4) and the multi-layer tube (1). The upper end surface of the blade (16) is fixedly connected to the lower end surface of the cutting knife (5).

6. The multi-layer thickened tube structure according to claim 5, characterized in that: The blade (16) is shaped to be wide on the left and narrow on the right.

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