Clamping device for moving thin film

Abstract

The utility model relates to the technical field of film packaging, in particular to a clamping device for film movement, which comprises a mounting main body and a clamping main body rotatably arranged on the mounting main body, one end of the clamping main body is rotatably arranged on the mounting main body, and an elastic piece is arranged between the mounting main body and the clamping main body. The other end of the clamping main body abuts against the mounting main body, and the film is arranged between the mounting main body and the clamping main body; a limiting protrusion is arranged on the clamping body and is in an L shape, a groove and a limiting block are arranged on the installation body, one end of the limiting block extends into the groove, the limiting protrusion is connected into the groove in a matched mode, and one end of the L-shaped limiting protrusion can abut against the end, extending into the groove, of the limiting block. The limiting protrusions and the limiting blocks are additionally arranged, so that the clamping body can only be opened at a small angle on the installation body, abrasion is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of film packaging, in particular to a clamping device for film movement. Background Art

[0002] In existing cigarette packaging, a laminating machine is required to cover the outside of the cigarette box with a layer of plastic film. The laminating machine has components such as a discharge roller, a collection roller, a laminating mechanism, and a clamping mechanism. The clamping mechanism is usually composed of a clamp and a transmission system. The clamp is used to clamp the plastic film and ensure that it does not slide or move during transmission. The transmission system and the clamp are linked to each other to control the clamp to open and close regularly, thereby achieving stable transmission of the plastic film. Therefore, the design of the clamping mechanism needs to pay attention to the control of the clamping force and the adjustment of the transmission speed. Since the clamping mechanism usually runs continuously for a long time, stability and reliability are very important.

[0003] For example, Chinese patent CN212827308U discloses a constant force device and a laminating machine, comprising: a discharge mechanism having a discharge roller, a lower pressure roller that cooperates with the discharge roller to clamp the plastic film, a rotating frame on which the lower pressure roller is installed, and a first cylinder that drives the rotating frame to rise and fall; a constant force component, which is arranged on the discharge side of the discharge roller and has a counterweight roller, an elastic frame connected to the counterweight roller and connected to the rotating frame at the top end. The above patent discloses a constant force device and a laminating machine, which uses an elastic frame to adjust the resistance torque, reduce or even avoid changes in the tension of the plastic film, and improve the control of the clamping force. However, since the clamping mechanism needs to open and close up and down at a high frequency, the elastic frame is prone to lose its elasticity after a long period of adjustment, affecting the control of the clamping force.

[0004] Therefore, it is necessary for those skilled in the art to provide a clamping device for moving a film and improve the stability and service life of the clamping mechanism. Utility Model Content

[0005] The purpose of the utility model is to provide a clamping device for film movement to solve the technical problems in the prior art that during the film transmission process, the clamping mechanism needs to open and close up and down at a high frequency, resulting in difficulty in controlling the clamping force, a short service life of the clamping mechanism, and easy damage.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a clamping device for moving a film, comprising a mounting body and a clamping body rotatably arranged on the mounting body, one end of the clamping body being rotatably arranged on the mounting body and an elastic member being provided between the mounting body and the clamping body, the other end of the clamping body abutting the mounting body and the film being arranged between the mounting body and the clamping body; a limiting protrusion is provided on the clamping body, and the limiting protrusion is L-shaped, and a groove and a limiting block are provided on the mounting body, one end of the limiting block extends into the groove, and the limiting protrusion is cooperatively connected in the groove and one end of the L-shaped limiting protrusion and one end of the limiting block extending into the groove can abut each other.

[0007] Furthermore, a rotating hole is provided on the clamping body, which passes through the wall of the clamping body. A rotating shaft is provided on the installation body, which is fitted and connected in the rotating hole. The clamping body is rotatably arranged on the installation body around the axis of the rotating shaft.

[0008] Furthermore, the limiting protrusion is provided on an end of the clamping body away from the rotating hole, the groove is provided on an end of the mounting body away from the rotating shaft, and the limiting block is provided between the groove and the rotating shaft.

[0009] Furthermore, an abutment portion is provided on the clamping body at the side of the limiting protrusion away from the rotating hole, and a receiving portion is provided on the installation body at the side of the groove away from the rotating axis. The abutment portion abuts against the receiving portion, and the film is located between the abutment portion and the receiving portion.

[0010] Furthermore, a mounting hole is provided on the mounting body, and the mounting hole is located below the rotating shaft. An elbow is provided on one end of the clamping body close to the rotating hole, and the elbow extends toward the mounting hole, and the inner side of the elbow faces the mounting hole.

[0011] Furthermore, an adjusting bolt is threadedly connected to the mounting hole, and an elastic member is arranged between the adjusting bolt and the elbow, with one end of the elastic member abutting the adjusting bolt and the other end of the elastic member abutting the inner wall of the elbow.

[0012] Furthermore, a tightening hole is provided on the clamping body at the elbow, the tightening hole passes through the wall of the elbow and is connected to the rotating hole, and the axis of the tightening hole is perpendicular to the axis of the rotating hole.

[0013] Furthermore, a tension adjusting piece is threadedly connected to the tension hole, and one end of the tension adjusting piece extends into the rotating hole and abuts against the outer wall of the rotating shaft.

[0014] Furthermore, the tension adjustment member is a hexagon socket screw.

[0015] Furthermore, the clamping body is made of cast iron, and the mounting body is made of carbon fiber.

[0016] The beneficial effects of the present invention are as follows: by adding a limiting protrusion and a limiting block, the limiting protrusion can abut the limiting block, thereby making the clamping body only able to open at a small angle on the installation body, and by reducing the opening and closing angle, the frequency of opening and closing is increased. While ensuring stable clamping, the elastic member is used to control the opening and closing of one end of the clamp body, so that the clamping body can continuously clamp the film on the installation body in a cycle. Due to the provision of the limiting block, the clamping body can only open and close at a small angle on the installation body, thereby reducing the compression of the elastic member, thereby improving the service life and stability of the elastic member. At the same time, the limiting block can accurately control the opening and closing angle. Compared with the prior art that relies on elastic equipment to control the opening and closing, the present invention is more accurate in clamping the film and more stable in use. It also reduces wear on the elastic member, thereby improving the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the clamping device for film movement of the present invention.

[0018] Figure 2 It is an exploded view of the clamping device for film movement of the present invention.

[0019] Figure 3 It is a front view of the clamping device for film movement of the present invention.

[0020] Figure 4 It is a main sectional view of the clamping device for film movement of the present invention.

[0021] The markings of the components in the accompanying drawings are as follows: 10. Mounting body; 11. Clamping body; 12. Limit block; 13. Limit protrusion; 14. Rotation hole; 15. Rotation axis; 16. Groove; 17. Abutment part; 18. Supporting part; 19. Elbow; 20. Adjustment hole; 21. Mounting hole; 22. Adjustment bolt; 23. Elastic part; 24. Tightening hole; 25. Tightening adjustment part. DETAILED DESCRIPTION

[0022] The present invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0023] See also Figure 1The utility model provides a clamping device for moving a film, comprising a mounting body 10 and a clamping body 11 rotatably arranged on the mounting body 10, wherein one end of the clamping body 11 is rotatably arranged on the mounting body 10, and the other end of the clamping body 11 abuts against the mounting body 10. The film is arranged between the mounting body 10 and the clamping body 11. Preferably, the clamping body 11 is made of cast iron. When in use, a magnetic device (not shown in the figure), such as a magnet, is provided at the upper end of the clamping body 11. The magnetic device continuously approaches or moves away from the clamping body 11, thereby driving the clamping body 11 to continuously rotate on the mounting body 10, so that one end of the clamping body 11 repeatedly abuts against the mounting body 10, thereby achieving the clamping and loosening of the film between the clamping body 11 and the mounting body 10.

[0024] In this embodiment, the installation body 10 is made of carbon fiber to reduce the overall weight of the device.

[0025] Further, see Figure 2 、 Figure 3 The clamping body 11 is provided with a rotating hole 14, which passes through the wall of the clamping body 11. The installation body 10 is provided with a rotating shaft 15, which is connected in the rotating hole 14. The clamping body 11 is rotatably arranged on the installation body 10 around the axis of the rotating shaft 15.

[0026] A limiting protrusion 13 is provided on the end of the clamping body 11 away from the rotating hole 14, and the limiting protrusion 13 is L-shaped. A groove 16 is provided on the end of the installation body 10 away from the rotating shaft 15. A limiting block 12 is detachably connected between the groove 16 and the rotating shaft 15, and one end of the limiting block 12 extends into the groove 16. The limiting protrusion 13 is cooperatively connected in the groove 16, and one end of the L-shaped limiting protrusion 13 and one end of the limiting block 12 extending into the groove 16 can abut against each other.

[0027] An abutment portion 17 is provided on the clamping body 11 on the side of the limiting protrusion 13 away from the rotating hole 14. A receiving portion 18 is provided on the mounting body 10 on the side of the groove 16 away from the rotating shaft 15. The abutment portion 17 can abut against the receiving portion 18, and the film is located between the abutment portion 17 and the receiving portion 18. In this embodiment, a pointed protrusion is provided on the surface of the abutment portion 17 to increase friction and ensure the stability of the clamping body 11 clamping the film. When the limiting protrusion 13 abuts the limiting block 12, the abutment portion 17 separates from the receiving portion 18. When the limiting protrusion 13 separates from the limiting block 12, the abutment portion 17 abuts against the receiving portion 18. When in use, one end of the clamping body 11 is sleeved on the rotating shaft 15, and the other end of the clamping body 11 clamps the film. The limiting protrusion 13 on the clamping body 11 is matched and connected to the groove 16 on the mounting body 10. When one end of the clamping body 11 rotates around the axis of the rotating shaft 15, the other end of the clamping body 11 releases the film, and at the same time the limiting protrusion 13 abuts the limiting block 12, so that the clamping body 11 can only be opened at a small angle on the mounting body 10, reducing the opening and closing stroke, thereby ensuring the opening and closing frequency.

[0028] The utility model increases the frequency of opening and closing by reducing the opening and closing angle, thereby reducing wear and tear and increasing the service life of the equipment while ensuring stable clamping.

[0029] See also Figure 2 , Figure 4 An elastic member 23 is provided between the installation body 10 and the clamping body 11. The elastic member 23 is provided near the rotation axis 15 and abuts against the installation body 10 and the clamping body 11 respectively. When in use, the film is provided between the installation body (10) and the clamping body (11) and is located at one end, and the elastic member 23 is provided between the installation body 10 and the clamping body 11 and is located at the other end. At the same time, the magnetic attraction device is provided at the end of the clamping body 11 away from the rotation axis 15 and close to the film, so as to control the opening and closing of one end of the clamping body 11, and the elastic member 23 is provided at the end close to the rotation axis 15 to control the opening and closing of the other end of the clamping body 11.

[0030] Furthermore, a mounting hole 21 is provided on the mounting body 10, and the mounting hole 21 is located below the rotating shaft 15. An elbow 19 is provided on the end of the clamping body 11 close to the rotating hole 14, and the elbow 19 extends toward the mounting hole 21, and the inner side surface of the elbow 19 faces the mounting hole 21.

[0031] The mounting hole 21 is internally threaded with an adjusting bolt 22 , and the elastic member 23 is disposed between the adjusting bolt 22 and the elbow 19 . One end of the elastic member 23 abuts against the adjusting bolt 22 , and the other end of the elastic member 23 abuts against the inner wall of the elbow 19 . Preferably, the elastic member 23 is a spring.

[0032] The present invention disposes an adjustment bolt 22 within the mounting hole 21 and an elastic member 23 between the adjustment bolt 22 and the elbow 19. The elastic member 23 is used to control the opening and closing of one end of the clamp body 11, allowing the clamping body 11 to continuously clamp the film on the mounting body 10. Due to the provision of the limit block 12, the clamping body 11 can only open and close at a small angle on the mounting body 10, thereby reducing compression on the elastic member 23 and improving the service life and stability of the elastic member 23. Furthermore, the limit block 12 accurately controls the opening and closing angle. Compared to the prior art method of relying on elastic devices to control opening and closing, the present invention provides more accurate film clamping and more stable use.

[0033] In this embodiment, the elbow 19 is provided with an adjustment hole 20 that penetrates the wall of the elbow 19 and faces the mounting hole 21. When the abutting portion 17 of the clamping body 11 and the receiving portion 18 of the mounting body 10 abut against each other, the axes of the mounting hole 21 and the adjustment hole 20 coincide with each other. When the elastic member 23 is a spring, an adjustment device (such as an Allen wrench) is manually inserted through the adjustment hole 20, through the elastic member 23, and abuts the bolt head of the adjustment bolt 22. By adjusting the position of the adjustment bolt 22 within the mounting hole 21, the compression length of the elastic member 23 is adjusted, thereby adjusting the elastic pressure of the elastic member 23, ensuring that the clamping body 11 can more tightly clamp the film to the mounting body 10, and ensuring the stability of the present invention.

[0034] During use, the magnetic attraction device is arranged at the end of the clamping body 11 away from the rotating shaft 15. When the clamping body 11 is attracted by the magnetic attraction device and rotates around the axis of the rotating shaft 15, the inner wall of the elbow 19 will abut against the elastic part 23. The elastic part 23 is compressed under pressure and accumulates elastic potential energy. At the same time, the limiting protrusion 13 abuts against the limiting block 12. The clamping body 11 opens at a small angle on the installation body 10, and the film moves. When the magnetic attraction device moves away from the clamping body 11, the end of the clamping body 11 away from the elbow 19 naturally falls and clamps the film. The elastic part 23 abuts against the elbow 19 under the drive of the elastic potential energy, thereby making the end of the clamping body 11 away from the elbow 19 more tightly abut against the film, thereby further improving the clamping effect.

[0035] Furthermore, the clamping body 11 is provided with a tensioning hole 24 at the elbow 19. The tensioning hole 24 extends through the wall of the elbow 19 and communicates with the rotation hole 14. The axis of the tensioning hole 24 is perpendicular to the axis of the rotation hole 14. A tensioning member 25 is internally threadedly connected to the tensioning hole 24. One end of the tensioning member 25 extends into the rotation hole 14 and abuts the outer wall of the rotation shaft 15. Preferably, the tensioning member 25 is a hexagon socket head cap screw.

[0036] The utility model utilizes the tension adjustment member 25 to abut against the rotating shaft 15 to increase the friction force of rotation between the clamping body 11 and the installation body 10, thereby adjusting the falling speed of the clamping body 11 and improving the control effect of the opening and closing clamping of the film.

[0037] The specific operation method of the present invention is as follows: step 1: the magnetic device approaches the clamping body 11, and one end of the clamping body 11 is attracted by the magnetic device and rotates around the axis of the rotating shaft 15. The inner wall of the elbow 19 compresses the elastic part 23, and at the same time the limiting protrusion 13 abuts the limiting block 12. The clamping body 11 opens at a small angle on the installation body 10, and the film moves.

[0038] Step 2: The magnetic device moves away from the clamping body 11, and the clamping body 11 naturally falls and clamps the film. The elastic member 23 abuts against the elbow 19 under the drive of elastic potential energy, so that the clamping body 11 clamps the film.

[0039] The present invention adds a limiting protrusion and a limiting block so that the limiting protrusion can abut the limiting block, thereby allowing the clamping body to only open at a small angle on the installation body. By reducing the opening and closing angle, the frequency of opening and closing is increased. While ensuring stable clamping, the elastic member is used to control the opening and closing of one end of the clamp body, so that the clamping body can continuously clamp the film on the installation body in a cycle. Due to the provision of the limiting block, the clamping body can only open and close at a small angle on the installation body, thereby reducing the compression of the elastic member, thereby improving the service life and stability of the elastic member. At the same time, the limiting block can accurately control the opening and closing angle. Compared with the prior art that relies on elastic devices to control the opening and closing, the present invention clamps the film more accurately and is more stable to use. It also reduces wear on the elastic member, thereby improving the service life of the equipment.

[0040] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A film moving clamping device, comprising a mounting body (10) and a clamping body (11) rotatably arranged on the mounting body (10), characterized in that: One end of the clamping body (11) is rotatably arranged on the mounting body (10), and an elastic member (23) is arranged between the mounting body (10) and the clamping body (11); the other end of the clamping body (11) abuts against the mounting body (10), and the film is arranged between the mounting body (10) and the clamping body (11); a limiting protrusion (13) is arranged on the clamping body (11), and the limiting protrusion (13) is L-shaped; a groove (16) and a limiting block (12) are arranged on the mounting body (10), and one end of the limiting block (12) extends into the groove (16); the limiting protrusion (13) is matched and connected in the groove (16), and one end of the L-shaped limiting protrusion (13) and one end of the limiting block (12) extending into the groove (16) can abut against each other.

2. The film moving clamping device according to claim 1, characterized in that: The clamping body (11) is provided with a rotation hole (14), which passes through the wall of the clamping body (11); the mounting body (10) is provided with a rotation shaft (15), which is fitted and connected in the rotation hole (14); the clamping body (11) is rotatably arranged on the mounting body (10) around the axis of the rotation shaft (15).

3. The film moving clamping device according to claim 2, characterized in that: The limiting protrusion (13) is arranged on an end of the clamping body (11) away from the rotating hole (14), the groove (16) is arranged on an end of the mounting body (10) away from the rotating shaft (15), and the limiting block (12) is arranged between the groove (16) and the rotating shaft (15).

4. The film moving clamping device according to claim 2, characterized in that: An abutment portion (17) is provided on the clamping body (11) at a side of the limiting protrusion (13) away from the rotating hole (14), and a receiving portion (18) is provided on the mounting body (10) at a side of the groove (16) away from the rotating shaft (15), the abutment portion (17) abuts against the receiving portion (18), and the film is located between the abutment portion (17) and the receiving portion (18).

5. The film moving clamping device according to claim 2, characterized in that: The mounting body (10) is provided with a mounting hole (21), the mounting hole (21) being located below the rotating shaft (15); an elbow (19) is provided at one end of the clamping body (11) close to the rotating hole (14), the elbow (19) extending in the direction of the mounting hole (21), and the inner side surface of the elbow (19) facing the mounting hole (21).

6. The film moving clamping device according to claim 5, characterized in that: The mounting hole (21) is internally threadedly connected with an adjusting bolt (22); the elastic member (23) is arranged between the adjusting bolt (22) and the elbow (19); one end of the elastic member (23) abuts against the adjusting bolt (22); and the other end of the elastic member (23) abuts against the inner wall of the elbow (19).

7. The film moving clamping device according to claim 5, characterized in that: The clamping body (11) is provided with a tightening hole (24) at the elbow (19), the tightening hole (24) passes through the wall of the elbow (19) and is connected to the rotating hole (14), and the axis of the tightening hole (24) is perpendicular to the axis of the rotating hole (14).

8. The film moving clamping device according to claim 7, characterized in that: The tension hole (24) is internally threadedly connected to a tension adjustment piece (25), and one end of the tension adjustment piece (25) extends into the rotating hole (14) and abuts against the outer wall of the rotating shaft (15).

9. The film moving clamping device according to claim 8, characterized in that: The tension adjustment member (25) is a hexagon socket screw.

10. The film moving clamping device according to claim 1, characterized in that: The clamping body (11) is made of cast iron, and the mounting body (10) is made of carbon fiber.

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