Pipe barrel length adjusting structure for wrapping film

Abstract

The utility model discloses a pipe barrel length adjusting structure for a wrapping film, and aims to provide the pipe barrel length adjusting structure for the wrapping film, which can autonomously select a proper width. Comprising a plurality of pipe barrels and a plurality of connecting pieces, each pipe barrel is of a hollow structure, a plurality of first round holes are formed in the upper end of each pipe barrel, a plurality of second round holes are formed in the lower end of each pipe barrel, one end of each connecting piece is connected with one pipe barrel through the corresponding first round hole, and the other end of each connecting piece is connected with the other pipe barrel through the corresponding second round hole. The utility model has the beneficial effects that the length of the winding film pipe barrel can be independently selected, and the adjustment is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field related to a tube for a stretch film, in particular to a length adjustment structure of a tube for a stretch film. Background Art

[0002] Stretch film, also known as stretch film or heat shrink film, is generally used with a roll. The main function of the stretch film is to stabilize, cover and protect items, and the roll plays the role of fixing the stretch film. For example, plastic wrap (a type of stretch film) is used to wrap fruits and other foods, banks use stretch film to wrap currency, and electronics factories use stretch film to wrap electronic products.

[0003] China Patent Authorization Publication No. CN217675963U, published on October 28, 2022, discloses a stretch film reel and stretch film. The reel comprises an adjustment frame mounted on each end of the reel. An upper cutter is movably mounted at the top between the two sets of adjustment frames, and a lower cutter is fixedly mounted below the upper cutter. A slit is defined between the upper and lower cutters, through which stretch film is inserted. A disadvantage of this utility model is that the length of the stretch film tube is fixed, making it difficult to rewind stretch film of varying sizes. Utility Model Content

[0004] The utility model aims to overcome the problem of fixed length of a tube for stretch film in the prior art and provides a tube length adjustment structure for stretch film which can independently select a suitable width.

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

[0006] A tube length adjustment structure for stretch film includes several tubes and several connecting pieces. The tubes are hollow structures. Several first circular holes are provided at the upper end of the tubes, and several second circular holes are provided at the lower end of the tubes. One end of the connecting piece is connected to the tubes through the first circular holes, and the other end of the connecting piece is connected to another tube through the second circular holes.

[0007] The tube is used to reel in the stretch film, the connector is used to connect the tube to the next set of tubes, and the first and second circular holes are used to lock the tube and the connector. This design allows the length of the stretch film tube to be adjusted.

[0008] Preferably, the side wall of the tube is provided with a plurality of fifth circular holes. This design saves the use of tube material.

[0009] Preferably, the connecting member includes a connecting tube, a first telescopic member and a second telescopic member, the first telescopic member and the second telescopic member are located inside the connecting tube, the first telescopic member and the second telescopic member are symmetrically distributed up and down, the connecting tube is provided with a third circular hole and a fourth circular hole, the first telescopic member is connected to the connecting tube through the third circular hole, the second telescopic member is connected to the connecting tube through the fourth circular hole, the first telescopic member is connected to one tube through the second circular hole, and the second telescopic member is connected to another tube through the first circular hole. The connecting tube is used to fix the positions of the first telescopic member and the second telescopic member, making the structure more stable, the first telescopic member and the second telescopic member are used to realize the telescopic function of the connecting member, the third circular hole and the fourth circular hole provide a telescopic channel for the first telescopic member and the second telescopic member, the distance between the first telescopic member and the second telescopic member is equal to the distance from the first circular hole to the top of the tube plus the distance from the second circular hole to the bottom of the tube, which better performs the clamping connection between the tubes. This design realizes the clamping function of the connecting member.

[0010] Preferably, the outer diameter of the connecting tube is smaller than or equal to the inner diameter of the tube. This design allows the connecting tube to be placed on the inner walls of the two tubes to connect the two tubes.

[0011] Preferably, the first telescopic member includes a fixed seat and a plurality of bosses, the fixed seat being located at the inner center of the connecting tube, the fixed seat being provided with a channel and a connecting block, one side of the connecting block being connected to the fixed seat, and the other side of the connecting block being connected to the inner side wall of the connecting tube, the boss being provided with a return spring and a baffle, the baffle being mounted on the side wall of the boss, the return spring and the baffle being placed on the inner side of the connecting tube, the return spring being sleeved on the outer side of the boss, one end of the return spring being connected to the fixed seat, the other end of the return spring being connected to the baffle, one end of the boss being slidably connected to the fixed seat through the channel, the other end of the boss being placed on the outer side of the connecting tube through the third circular hole, and the boss being connected to a tube through the second circular hole. The channel is used for the sliding of the boss, the connecting block fixes the position of the fixed seat, thereby fixing the position of the first telescopic member, the boss being provided with a return spring and a baffle, the baffle and the fixed seat compressing the return spring, thereby resetting the return spring, thereby driving the restoration of the boss position. This design realizes the telescopic function of the boss.

[0012] Preferably, the cross-section of the end of the protrusion located outside the connecting tube is arc-shaped, and the length of the protrusion located outside the connecting tube is less than or equal to the thickness of the tube. This design reduces losses when parts come into contact and prevents contact between the protrusion and the wrapping film.

[0013] The beneficial effects of the utility model are that the length of the tube for the stretch film can be independently selected and the adjustment is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is the front view of the tube;

[0016] Figure 3 It is a front view of the connector;

[0017] Figure 4 is a top view of the connector;

[0018] Figure 5 It is a cross-sectional view of the first fixing seat.

[0019] 1. Tube, 101. First circular hole, 102. Second circular hole, 2. Connecting piece, 201. Connecting tube, 202. First telescopic piece, 203. Second telescopic piece, 204. Third circular hole, 205. Fourth circular hole, 3. Fixed seat, 4. Boss, 5. Channel, 6. Connecting block, 7. Fifth circular hole, 8. Return spring, 9. Baffle. DETAILED DESCRIPTION

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

[0021] like Figure 1 and Figure 2 As shown, a tube length adjustment structure for stretch film includes several tubes 1 and several connecting members 2. The tubes 1 are hollow structures. Several first circular holes 101 are provided at the upper end of the tubes 1, and several second circular holes 102 are provided at the lower end of the tubes 1. One end of the connecting member 2 is connected to one tube 1 through the first circular hole 101, and the other end of the connecting member 2 is connected to another tube 1 through the second circular hole 102. Several fifth circular holes 7 are provided on the side walls of the tubes 1. The outer diameter of the connecting tube 201 is less than or equal to the inner diameter of the tube 1.

[0022] like Figure 3 、 Figure 4 and Figure 5As shown, the connecting member 2 includes a connecting tube 201, a first telescopic member 202 and a second telescopic member 203, the first telescopic member 202 and the second telescopic member 203 are located inside the connecting tube 201, the first telescopic member 202 and the second telescopic member 203 are symmetrically distributed up and down, the connecting tube 201 is provided with a third circular hole 204 and a fourth circular hole 205, the first telescopic member 202 is connected to the connecting tube 201 through the third circular hole 204, the second telescopic member 203 is connected to the connecting tube 201 through the fourth circular hole 205, the first telescopic member 202 is connected to one tube 1 through the second circular hole 102, the second telescopic member 203 is connected to the other tube 1 through the first circular hole 101, the first telescopic member 202 includes a fixing seat 3 and a plurality of protrusions 4, the fixing seat 3 is located at the inner center of the connecting tube 201, and is provided on the fixing seat 3 The channel 5 and the connecting block 6, one side of the connecting block 6 is connected to the fixed seat 3, and the other side of the connecting block 6 is connected to the inner wall of the connecting tube 201. The boss 4 is provided with a return spring 8 and a baffle 9, and the baffle 9 is installed on the side wall of the boss 4. The return spring 8 and the baffle 9 are placed on the inner side of the connecting tube 201, and the return spring 8 is sleeved on the outer surface of the boss 4. One end of the return spring 8 is connected to the fixed seat 3, and the other end of the return spring 8 is connected to the baffle 9. One end of the boss 4 is slidably connected to the fixed seat 3 through the channel 5, and the other end of the boss 4 passes through the third circular hole 204 and is placed on the outside of the connecting tube 201. The boss 4 is connected to a tube 1 through the second circular hole 102. The cross-section of one end of the boss 4 placed on the outside of the connecting tube 201 is arc-shaped, and the length of the boss 4 placed on the outside of the connecting tube 201 is less than or equal to the thickness of the tube 1.

[0023] When in use, according to the width of the wrapping film, the connecting piece 2 is embedded and installed in the second circular hole 102 of the tube 1, and the boss 4 of the first telescopic piece 202 at the upper end of the connecting piece 2 is pressed. The boss 4 shrinks into the inside of the connecting tube 201 through the third circular hole 204, and the boss 4 will move into the channel 5. The fixing seat 3 and the baffle 9 squeeze the reset spring 8 to align the position of the boss 4 with the position of the second circular hole 102 of the tube 1. After the external force is removed, the reset spring 8 will drive the boss 4 to be locked and connected with the second circular hole 102 of the tube 1. Repeat the above steps to lock and connect the second telescopic piece 203 at the lower end of the connecting piece 2 with the first circular hole 101 of the next group of tubes 1. The above operation process realizes the need of splicing multiple tubes.

Claims

1. A tube length adjustment structure for a stretch film, characterized in that: The invention comprises a plurality of tubes (1) and a plurality of connecting pieces (2), wherein the tubes (1) are hollow structures, the upper ends of the tubes (1) are provided with a plurality of first circular holes (101), the lower ends of the tubes (1) are provided with a plurality of second circular holes (102), one end of the connecting piece (2) is connected to one tube (1) through the first circular hole (101), and the other end of the connecting piece (2) is connected to another tube (1) through the second circular hole (102).

2. The tube length adjustment structure for stretch film according to claim 1, characterized in that: The side wall of the tube (1) is provided with a plurality of fifth circular holes (7).

3. The tube length adjustment structure for stretch film according to claim 1, characterized in that: The connecting member (2) comprises a connecting tube (201), a first telescopic member (202) and a second telescopic member (203), wherein the first telescopic member (202) and the second telescopic member (203) are located inside the connecting tube (201), and the first telescopic member (202) and the second telescopic member (203) are symmetrically distributed up and down, and the connecting tube (201) is provided with a third circular hole (204) and a fourth circular hole (205), wherein the first telescopic member (202) is connected to the connecting tube (201) through the third circular hole (204), and the second telescopic member (203) is connected to the connecting tube (201) through the fourth circular hole (205), wherein the first telescopic member (202) is connected to one tube (1) through the second circular hole (102), and the second telescopic member (203) is connected to the other tube (1) through the first circular hole (101).

4. The tube length adjustment structure for stretch film according to claim 3, characterized in that: The outer diameter of the connecting tube (201) is smaller than or equal to the inner diameter of the tube (1).

5. The tube length adjustment structure for stretch film according to claim 3, characterized in that: The first telescopic member (202) comprises a fixing seat (3) and a plurality of bosses (4), wherein the fixing seat (3) is located at the inner center of the connecting tube (201), and the fixing seat (3) is provided with a hole (5) and a connecting block (6), one side of the connecting block (6) is connected to the fixing seat (3), and the other side of the connecting block (6) is connected to the inner side wall of the connecting tube (201), and the boss (4) is provided with a return spring (8) and a baffle (9), and the baffle (9) is installed on the side wall of the boss (4), and the return spring (8) is provided on the fixing seat (3). ) and a baffle (9) are placed on the inner side of the connecting tube (201), the return spring (8) is sleeved on the outer side of the boss (4), one end of the return spring (8) is connected to the fixing seat (3), and the other end of the return spring (8) is connected to the baffle (9), one end of the boss (4) is slidably connected to the fixing seat (3) through the channel (5), the other end of the boss (4) passes through the third circular hole (204) and is placed on the outer side of the connecting tube (201), and the boss (4) is connected to a tube (1) through the second circular hole (102).

6. The tube length adjustment structure for stretch film according to claim 5, characterized in that: The cross-section of one end of the protruding column (4) located outside the connecting tube (201) is in the shape of an arc, and the length of the protruding column (4) located outside the connecting tube (201) is less than or equal to the thickness of the tube (1).

Images