Tensioning structure of film rolling machine

Abstract

The utility model discloses a tensioning structure of a film rolling machine, which comprises a fixed shaft and a tensioning assembly arranged on the fixed shaft, the tensioning assembly comprises a first connecting rod and a second connecting rod which are hinged on a shaft body of the fixed shaft, and the other end of the first connecting rod and the other end of the second connecting rod are hinged with a tensioning block. According to the tensioning structure of the film rolling machine, rolling can be conducted no matter whether the rolling barrel is needed or not, when the rolling barrel is needed, an adjusting disc is rotated to drive an adjusting ring to move along a fixing shaft, and therefore the tensioning assembly is opened through a push rod; the winding drum is tensioned, so that winding operation is carried out; when the film is directly wound, the clamping assembly is installed on the tensioning assembly, the initial end of the film is clamped on the clamping assembly, the adjusting disc is rotated, the adjusting ring drives the clamping rod to push the wedge-shaped block to push the movable plate to the fixed plate, and therefore the film is clamped.

Description

Technical Field

[0001] This utility model relates to the field of film winding equipment technology, specifically a tensioning structure for a film winding machine. Background Technology

[0002] A film winding machine is the end-of-line equipment in a film production line, used to wind the formed film onto a winding shaft.

[0003] Chinese Patent Publication No. CN 216272490 U discloses a tensioning structure for use in a film rolling machine, including a fixed shaft, a tensioning component disposed on the fixed shaft, and a locking nut mounted on the fixed shaft. It is simple to operate, has a compact structure, and can quickly tighten and loosen. It effectively improves the tensioning force and maintains a large torque, which helps to improve the stability of sealing or tearing film, improves work efficiency, and can be adapted to rolls of film with different inner diameters.

[0004] Although the above solution can tighten the take-up drum, it is only applicable to films that need to be wound using a take-up drum. For films without a take-up drum, there is no clamping mechanism when winding, and the film cannot be fixed at the beginning. Utility Model Content

[0005] The purpose of this invention is to provide a tensioning structure for a film winding machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tensioning structure for a film winding machine, comprising a fixed shaft and a tensioning assembly disposed on the fixed shaft, wherein the tensioning assembly comprises a connecting rod one and a connecting rod two hinged to the shaft body of the fixed shaft, and a tensioning block is hinged to the other end of the connecting rod one and the connecting rod two.

[0007] An adjusting disc is threaded onto the shaft of the fixed shaft. An adjusting ring is rotatably connected to one end of the adjusting disc near the tensioning assembly. A push rod is hinged to the end face of the adjusting ring, and the other end of the push rod is hinged to the tensioning block.

[0008] A clamping assembly for holding the film is fixedly installed on the side of the tensioning block.

[0009] Preferably, the clamping assembly includes a fixed plate fixedly connected to the side of the tensioning block, a movable plate hinged to the lower end of the fixed plate, anti-slip grooves provided on the opposite surfaces of the fixed plate and the movable plate, a clamping rod fixedly installed on the side of the adjusting ring near the tensioning assembly, a guide rod fixedly installed on the surface of the clamping rod, a wedge block slidably connected to the surface of the guide rod, and a buffer spring provided between the wedge block and the clamping rod.

[0010] By setting up a clamping assembly, the film ends are clamped using a fixed plate and a moving plate, thus enabling the film to be wound up without a winding drum.

[0011] Preferably, the surface of the tensioning block is provided with a T-shaped groove, the inner wall of the T-shaped groove is provided with an anti-slip plate, and the surface of the anti-slip plate is provided with anti-slip texture.

[0012] By inserting anti-slip plates on the surface of the tensioning block and setting anti-slip textures on the surface of the anti-slip plates, the friction between the tensioning block and the inner wall of the winding drum is increased.

[0013] Preferably, a light plate is inserted into the inner wall of the T-slot.

[0014] By inserting a light plate into the T-slot, the light plate is less likely to damage the film when the film is directly wound up, and it is also easier to detach from the film.

[0015] Preferably, the surfaces of the fixed shaft, the tensioning block, and the adjusting ring are all fixedly mounted with mounting seats by bolts, and the first connecting rod and the second connecting rod are respectively hinged to the fixed shaft and the tensioning block through the mounting seats; the push rod is hinged to the tensioning block and the adjusting ring through the mounting seats.

[0016] Preferably, a limiting slider is fixed on the inner ring surface of the adjusting ring, and a groove for the limiting slider to move is formed on the surface of the fixed shaft.

[0017] By setting limit sliders and grooves, the adjusting ring can be assisted in limiting its movement.

[0018] Beneficial effects

[0019] This utility model provides a tensioning structure for a film winding machine, which has the following beneficial effects:

[0020] The tensioning structure of this film winding machine allows for winding regardless of whether a winding drum is needed. When a winding drum is required, rotating the adjusting disc causes the adjusting ring to move along the fixed shaft, which in turn opens the tensioning assembly via the push rod, tensioning the winding drum for winding. When winding the film directly, the clamping assembly is installed on the tensioning assembly, and the initial end of the film is clamped onto the clamping assembly. Rotating the adjusting disc causes the adjusting ring, along with the clamping rod, to push the wedge block, which in turn pushes the moving plate towards the fixed plate, thus clamping the film.

[0021] The tensioning structure of this film winding machine allows for the selection of different winding modes between using a take-up drum and not using a take-up drum, making it more practical. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of Embodiment 2 of the present invention;

[0024] Figure 3This is a schematic diagram of the installation structure of the tensioning block and the smooth plate of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the clamping rod of this utility model;

[0026] Figure 5 for Figure 2 Enlarged structural diagram at point A in the middle.

[0027] In the diagram: 1. Fixed shaft; 2. Tensioning assembly; 201. Connecting rod one; 202. Connecting rod two; 203. Tensioning block; 3. Adjusting disc; 4. Adjusting ring; 5. Push rod; 6. Clamping assembly; 601. Fixed plate; 602. Moving plate; 603. Clamping rod; 604. Guide rod; 605. Wedge block; 606. Buffer spring; 7. T-slot; 8. Anti-slip plate; 9. Smooth plate; 10. Mounting base; 11. Limiting slider. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Please see Figure 1 The present invention provides a technical solution: a tensioning structure for a film rolling machine, including a fixed shaft 1 and a tensioning assembly 2 disposed on the fixed shaft 1, wherein the tensioning assembly 2 includes a connecting rod 201 and a connecting rod 202 hinged to the shaft body of the fixed shaft 1, and a tensioning block 203 is hinged to the other end of the connecting rod 201 and the connecting rod 202.

[0031] like Figure 1 and Figure 2 As shown, an adjusting disc 3 is threadedly connected to the shaft body of the fixed shaft 1. An adjusting ring 4 is rotatably connected to one end of the adjusting disc 3 near the tensioning component 2. A push rod 5 is hinged to the end face of the adjusting ring 4. The other end of the push rod 5 is hinged to the tensioning block 203. A limiting slider 11 is fixedly provided on the inner ring surface of the adjusting ring 4. A groove for the limiting slider 11 to move is opened on the surface of the fixed shaft 1.

[0032] When tensioning the winding drum, the adjusting disc 3 drives the adjusting ring 4 to move axially along the fixed shaft 1, and the push rod 5 pushes the tensioning block 203 to press against the inner wall of the winding drum, thereby achieving the purpose of tensioning the winding drum.

[0033] The surface of the tensioning block 203 is provided with a T-groove 7, and an anti-slip plate 8 is inserted into the inner wall of the T-groove 7. The surface of the anti-slip plate 8 is provided with anti-slip texture.

[0034] By inserting an anti-slip plate 8 on the surface of the tension block 203 and setting anti-slip texture on the surface of the anti-slip plate 8, the friction between the tension block 203 and the inner wall of the winding drum is improved.

[0035] Mounting bases 10 are fixedly mounted on the surfaces of the fixed shaft 1, tension block 203 and adjusting ring 4 by bolts. Connecting rod 1 201 and connecting rod 202 are hinged to the fixed shaft 1 and tension block 203 respectively through mounting bases 10. Push rod 5 is hinged to tension block 203 and adjusting ring 4 through mounting bases 10.

[0036] Example 2

[0037] The difference from Example 1 is:

[0038] Reference Figure 2-5 As shown, a clamping assembly 6 for holding the film is fixedly installed on the side of the tensioning block 203.

[0039] Specifically, such as Figure 3 and Figure 5 As shown, the clamping assembly 6 includes a fixed plate 601 fixedly connected to the side of the tensioning block 203. A movable plate 602 is hinged to the lower end of the fixed plate 601. Anti-slip grooves are provided on the opposite surfaces of the fixed plate 601 and the movable plate 602. A clamping rod 603 is fixedly installed on the side of the adjusting ring 4 near the tensioning assembly 2. A guide rod 604 is fixedly installed on the surface of the clamping rod 603. A wedge block 605 is slidably connected to the surface of the guide rod 604. A buffer spring 606 is provided between the wedge block 605 and the clamping rod 603. A smooth plate 9 is inserted into the inner wall of the T-slot 7.

[0040] It should be noted that the clamping component 6 only needs to be installed on one tensioning block 203.

[0041] When directly winding the film, the clamping assembly 6 is used to clamp the end of the film, and the smooth plate 9 is replaced with the anti-slip plate 8 so that the film is directly wound onto the tensioning block 203.

[0042] Working principle: When using a take-up drum to wind up the film, insert the anti-slip plate 8 into the T-groove 7 on the tension block 203, and put the take-up drum on the tension block 203. By rotating the adjusting disc 3, the adjusting disc 3 drives the adjusting ring 4 to move axially along the fixed shaft 1. The push rod 5 is used to open the tension block 203, so that the anti-slip plate 8 on the tension block 203 fits against the inner wall of the take-up drum.

[0043] When directly winding the film, replace the anti-slip plate 8 on the tension block 203 with the smooth plate 9, and install the fixed plate 601 on one of the tension blocks 203. Clamp one end of the film between the fixed plate 601 and the moving plate 602, rotate the adjusting disc 3 to drive the adjusting ring 4 to move axially along the fixed shaft 1, and use the wedge block 605 on the clamping rod 603 to push the moving plate 602 to close, thereby clamping the end of the film.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensioning structure of a film winding machine, comprising a fixed shaft (1) and a tensioning assembly (2) arranged on the fixed shaft (1), characterized in that: The tensioning assembly (2) comprises a connecting rod I (201) and a connecting rod II (202) hinged on the shaft body of the fixed shaft (1), and the other end of the connecting rod I (201) and the connecting rod II (202) is hinged with a tensioning block (203); The shaft body of the fixed shaft (1) is threadedly connected with an adjusting disc (3), one end of the adjusting disc (3) close to the tensioning assembly (2) is rotatably connected with an adjusting ring (4), the end surface of the adjusting ring (4) is hinged with a push rod (5), and the other end of the push rod (5) is hinged with the tensioning block (203); The side surface of the tensioning block (203) is fixedly provided with a clamping assembly (6) for clamping the film.

2. The tensioning structure of a film winding machine according to claim 1, characterized in that: The clamping assembly (6) comprises a fixed plate (601) fixedly connected to the side surface of the tensioning block (203), the lower end of the fixed plate (601) is hinged with a movable plate (602), the opposite surfaces of the fixed plate (601) and the movable plate (602) are provided with anti-skid grooves, the side of the adjusting ring (4) close to the tensioning assembly (2) is fixedly provided with a clamping rod (603), the surface of the clamping rod (603) is fixedly provided with a guide rod (604), the surface of the guide rod (604) is slidably connected with a wedge-shaped block (605), and the buffer spring (606) is arranged between the wedge-shaped block (605) and the clamping rod (603).

3. The tensioning structure of a film winding machine according to claim 1, characterized in that: The surface of the tensioning block (203) is provided with a T-shaped groove (7), the inner wall of the T-shaped groove (7) is inserted with an anti-skid plate (8), and the surface of the anti-skid plate (8) is provided with anti-skid lines.

4. The tensioning structure of a film winding machine according to claim 3, characterized in that: The inner wall of the T-shaped groove (7) is inserted with a light plate (9).

5. The tensioning structure of a film winding machine according to claim 1, characterized in that: The surfaces of the fixed shaft (1), the tensioning block (203) and the adjusting ring (4) are all fixedly provided with a mounting seat (10) through bolts, the connecting rod I (201) and the connecting rod II (202) are hinged with the fixed shaft (1) and the tensioning block (203) respectively through the mounting seat (10); and the push rod (5) is hinged with the tensioning block (203) and the adjusting ring (4) through the mounting seat (10).

6. The tensioning structure of a film winding machine according to claim 1, characterized in that: The inner ring surface of the adjusting ring (4) is fixedly provided with a limiting sliding block (11), and the surface of the fixed shaft (1) is provided with a sliding groove for the movement of the limiting sliding block (11).

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