Anti-reverse rotation damping device for packaging film
By using a damping device in the film packaging equipment where a damping block contacts the roller shaft, the braking torque is adjusted, solving the problem of film roll reversal caused by insufficient motor braking force, and realizing continuous operation of the equipment and low-cost, high-efficiency packaging.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SICHUAN TOBACCO CO BAZHONG CO
- Filing Date
- 2026-04-28
- Publication Date
- 2026-06-02
AI Technical Summary
During the film packaging process, insufficient braking force of the motor can cause the film roll to reverse, resulting in film breakage, damage to cigarette boxes, and a high defect rate, which affects production capacity and costs.
A damping device for preventing film roll reversal was designed, including a clamping chassis and a blocking component. The device utilizes a damping block in contact with the roller shaft and adjusts the tilt angle of the damping block by an adjusting component to enhance the braking torque and prevent the film roll from reversing.
It effectively prevents film roll reversal, ensures the continuity of the packaging process, reduces equipment downtime and film waste, is suitable for various film feeding machines, and is low in cost and precise in adjustment.
Smart Images
Figure CN122126683A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of film packaging technology, and particularly relates to an anti-reverse damping device for packaging films. Background Technology
[0002] During the film packaging process, such as when using PE film to package cigarette boxes, the applicant found that the motor brakes were weakening and aging after the equipment was used for a long time. That is, when the machine stopped, stopped suddenly, or slowed down suddenly, the film roll would rotate a few more times, causing the delivered film to become loose and roll back, resulting in the film reversing, which could lead to film breakage and damage to the cigarette box. Furthermore, when replacing film rolls, the new film rolls are larger in diameter and weight than the old ones. This means that during startup, shutdown, and acceleration / deceleration, their inertia is much greater than that of the old film rolls. When the braking force is insufficient, the film rolls may also reverse, leading to a surge in packaging defect rates, frequent equipment shutdowns, and the scrapping of film materials, which seriously affects production capacity and costs. Summary of the Invention
[0003] The purpose of this invention is to overcome the defects of the prior art by providing a damping device for preventing reverse rotation of packaging film materials, thereby solving the problem of film roll reversal caused by insufficient motor braking force.
[0004] The objective of this invention is achieved through the following technical solution: A damping device for preventing reverse rotation of packaging film includes a clamping base and a blocking assembly. The blocking assembly is movably mounted on the clamping base. The blocking assembly includes a pressure block mounting base and a damping pressure block with one end hinged to the pressure block mounting base. The damping pressure block is used to contact a roller shaft. The pressure block mounting base is also provided with an adjustment assembly that contacts the damping pressure block to adjust the tilt angle of the damping pressure block.
[0005] In one embodiment, the clamping chassis includes a connecting base plate, a locking plate is vertically connected to one end of the bottom of the connecting base plate, and an adjusting top locking plate is provided at the other end. A top locking bolt is threadedly connected to the adjusting top locking plate, and the top locking bolt extends in a horizontal direction. In this embodiment, the locking plate at one end of the bottom of the connecting base plate abuts against the frame of the film feeding machine, while the other end can be adjusted by adjusting the position of the top locking bolt on the top locking plate, so that the top locking bolt and the locking plate together clamp the frame of the film feeding machine. The operation is simple and applicable to various types of film feeding machines, so as to fix the blocking component on the film feeding machine.
[0006] In one embodiment, the pressure block mounting base has an L-shaped structure, with one end connected to the connecting base plate and the other end provided with a protrusion for the damping pressure block to hinge.
[0007] In one embodiment, the end of the pressure block mounting base connected to the connecting base plate is provided with a plurality of adjusting grooves, the connecting base plate is provided with fixing holes corresponding to the adjusting grooves, and fixing bolts connected to the fixing holes are provided in the adjusting grooves; In this embodiment, multiple adjustment grooves are provided at one end of the pressure block mounting base, which facilitates the horizontal adjustment of the position of the pressure block mounting base on the connecting base plate. After adjusting the position of the pressure block mounting base according to the actual situation, the fixing bolt is passed through the fixing hole, and the fixing bolt is locked by the fixing nut, the first flat washer and the first spring washer to fix the position of the pressure block mounting base. That is, the position of the damping pressure block can be initially adjusted through a simple structure and operation.
[0008] In one embodiment, a through hole is provided on one end of the pressure block mounting base that is hinged to the damping pressure block. The adjustment assembly includes a sleeve installed on the through hole and an elastic element disposed in the sleeve. An adjustment structure is also installed on the sleeve. The two ends of the elastic element are in contact with the damping pressure block and the adjustment structure, respectively. In this embodiment, a sleeve installed on the pressure block mounting base is used to form a cavity for the elastic element. An adjustment structure is then installed on the sleeve, so that the elastic element is in a completely free state in the axial direction and its two ends are in contact with the adjustment structure and the damping pressure block, respectively. That is, by fine-tuning the tilt angle of the damping pressure block by the elastic element, the braking force is fine-tuned to meet the braking force requirements of different working conditions in various scenarios.
[0009] In one embodiment, the adjusting structure includes an adjusting nut welded to the end of the sleeve, an adjusting bolt threadedly connected to the adjusting nut, the adjusting bolt contacting the elastic element, and the adjusting nut being located at the end of the sleeve away from the pressure block mounting base.
[0010] This embodiment allows for fine-tuning of the braking force by rotating the adjusting bolt. It features a simple structure, convenient adjustment method, and high adjustment accuracy.
[0011] In one embodiment, the elastic element is a spring, and its two ends are in contact with the damping block and the adjusting bolt, respectively.
[0012] In one embodiment, a damping belt is also provided on the side of the damping block that is in contact with the roller.
[0013] In one embodiment, the connecting base plate is further provided with a locking plate hole for mounting the adjusting top locking plate, and the adjusting top locking plate is mounted on the connecting base plate by locking plate bolts and locking plate nuts that cooperate with them.
[0014] In one embodiment, the pressure block mounting base is provided with two mutually symmetrical protrusions, the damping pressure block is located between the two protrusions, and hinge side plates are also provided on both sides of the damping pressure block. The protrusions are provided with hinge holes, and hinge bolts that penetrate the hinge side plates and the protrusions are provided in the hinge holes.
[0015] The beneficial effects of this invention are as follows: By utilizing the contact between the inclined damping block and the roller shaft, the braking torque is strengthened, fundamentally preventing the film roll from stopping and reversing, as well as loosening and messy material, ensuring continuous operation during the packaging process. At the same time, the overall structure is simple and easy to process, and the problem of motor brake weakening or aging can be solved at a very low cost. The damping block is pressed by a spring set in the sleeve, and the angle of the damping block can be easily and accurately adjusted by rotating the adjusting bolt to adjust the braking force as needed and adapt to the tension requirements of different working conditions. Attached Figure Description
[0016] The invention will now be described in more detail with reference to embodiments and the accompanying drawings. Figure 1 A schematic diagram of the structure of the present invention is shown; Figure 2 A schematic diagram of the structure of the present invention (front view) is shown. Figure 3 A schematic diagram (top view) of the present invention is shown. In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.
[0017] Figure label: 1-Connecting base plate, 2-Adjusting top lock plate, 3-Pressure block mounting seat, 4-Damping pressure block, 5-Damping belt, 6-Fixing bolt, 7-First flat washer, 8-First spring washer, 9-Fixing nut, 10-Adjusting bolt, 11-Spring, 12-Top lock bolt, 13-Locking plate bolt, 14-Hinge bolt, 15-Hinge nut, 16-Second flat washer, 17-Second spring washer, 18-Locking plate nut. Detailed Implementation
[0018] The invention will now be further described with reference to the accompanying drawings.
[0019] This invention provides an anti-reverse damping device for packaging film materials, such as... Figure 1As shown, it includes a clamping chassis and a blocking assembly. The blocking assembly is movably mounted on the clamping chassis. The blocking assembly includes a pressure block mounting base and a damping pressure block with one end hinged to the pressure block mounting base. The damping pressure block is used to contact the roller shaft. The pressure block mounting base is also provided with an adjustment assembly that contacts the damping pressure block to adjust the tilt angle of the damping pressure block. It should be noted that in this embodiment, the blocking component is installed on the film feeder using a clamping chassis, and the damping block is supported by the pressure block mounting base. The contact state between the damping block and the roller is adjusted by the adjusting component to strengthen the braking torque. This fundamentally prevents the film roll from stopping and reversing, as well as from loosening and messing up the roll, ensuring continuous operation during the packaging process. The overall structure is simple and easy to process, and the problem of motor brake weakening or aging can be solved at a very low cost. Specifically, in this embodiment, such as Figure 1 As shown, the clamping chassis includes a connecting base plate. A locking plate is vertically connected to one end of the bottom of the connecting base plate, and an adjusting top locking plate is provided at the other end. A top locking bolt is threaded onto the adjusting top locking plate. The top locking bolt extends in the horizontal direction. That is, the locking plate at one end of the bottom of the connecting base plate abuts against the frame of the film feeder. The other end can be adjusted by adjusting the position of the top locking bolt on the adjusting top locking plate, so that the top locking bolt and the locking plate together clamp the frame of the film feeder. The operation is simple and applicable to various types of film feeders to fix the blocking component on the film feeder. In one embodiment, such as Figure 1 As shown, the pressure block mounting base has an L-shaped structure. One end of the base is connected to the connecting base plate, and the other end is provided with a protrusion for the damping pressure block to hinge. That is, one end of the pressure block mounting base extends horizontally and is mounted on the connecting base plate, while the other end extends vertically and is provided with a protrusion for the damping pressure block to hinge, so as to support and adjust the damping pressure block. In one embodiment, such as Figures 1 to 3 As shown, the end of the pressure block mounting base connected to the connecting base plate is provided with multiple adjusting grooves, the connecting base plate is provided with fixing holes corresponding to the adjusting grooves, and fixing bolts connected to the fixing holes are provided in the adjusting grooves; It should be noted that by opening multiple adjustment grooves at one end of the pressure block mounting seat, the position of the pressure block mounting seat can be easily adjusted horizontally on the connecting base plate. After adjusting the position of the pressure block mounting seat according to the actual situation, the fixing bolt is passed through the fixing hole, and the fixing bolt is locked by the fixing nut, the first flat washer and the first spring washer to fix the position of the pressure block mounting seat. That is, the position of the damping pressure block can be initially adjusted through a simple structure and operation.
[0020] In one embodiment, such as Figures 1 to 3As shown, a through hole is also provided on one end of the pressure block mounting base that is hinged to the damping pressure block. The adjustment assembly includes a sleeve installed on the through hole and an elastic element disposed in the sleeve. An adjustment structure is also installed on the sleeve. The two ends of the elastic element are in contact with the damping pressure block and the adjustment structure, respectively. It should be noted that in this embodiment, a sleeve installed on the pressure block mounting base is used to form a cavity for receiving the elastic element, and an adjustment structure is then installed on the sleeve so that the elastic element is in a completely free state in the axial direction and its two ends are in contact with the adjustment structure and the damping pressure block, respectively. That is, by finely adjusting the tilt angle of the damping pressure block through the elastic element, the braking force is finely adjusted to meet the braking force requirements of different working conditions in various scenarios.
[0021] Specifically, such as Figure 1 and Figure 2 As shown, the adjustment structure includes an adjusting nut welded to the end of the sleeve, an adjusting bolt threadedly connected to the adjusting nut, the adjusting bolt contacting the elastic element, and the adjusting nut located at the end of the sleeve away from the pressure block mounting seat; that is, the braking force can be finely adjusted by rotating the adjusting bolt, the structure is simple and the adjustment method is convenient, and the adjustment accuracy is high.
[0022] In one embodiment, the elastic element is a spring, and its two ends are in contact with the damping block and the adjusting bolt, respectively.
[0023] In one embodiment, such as Figure 1 As shown, a damping belt is also provided on the side of the damping block that is in contact with the roller shaft, which protects the contact surface between the roller shaft and the damping block and reduces the wear of the roller shaft. In one embodiment, such as Figure 2 and Figure 3 As shown, the connecting base plate is also provided with locking plate holes for installing the adjusting top locking plate. The adjusting top locking plate is installed on the connecting base plate by locking plate bolts and locking plate nuts that cooperate with them. That is, the adjusting top locking plate is fixed on the connecting base plate by locking plate bolts, locking plate nuts, first flat washers and first spring washers to maintain the clamping effect on the film feeder.
[0024] In one embodiment, such as Figure 2 and Figure 3As shown, the pressure block mounting base is provided with two mutually symmetrical protrusions, and the damping pressure block is located between the two protrusions. Hinged side plates are also provided on both sides of the damping pressure block. Hinged holes are opened on the protrusions, and hinged bolts are provided in the hinged holes, passing through the hinged side plates and the protrusions. That is, the damping pressure block can be rotated and adjusted with the hinged bolts as the origin. At the same time, the position of the damping pressure block after the tilt angle is adjusted is locked by the hinged bolts and hinged nuts. A second flat washer and a second spring washer are also provided for protection to avoid excessive local pressure.
[0025] In the description of this invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", 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 invention 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 invention.
[0026] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.
Claims
1. A damping device for preventing reverse rotation of packaging film, characterized in that, The device includes a clamping chassis and a blocking assembly. The blocking assembly is movably mounted on the clamping chassis. The blocking assembly includes a pressure block mounting base and a damping pressure block with one end hinged to the pressure block mounting base. The damping pressure block is used to contact the roller shaft. The pressure block mounting base is also provided with an adjustment assembly that contacts the damping pressure block to adjust the tilt angle of the damping pressure block.
2. The anti-reverse damping device for packaging film material according to claim 1, characterized in that, The clamping chassis includes a connecting base plate, with a locking plate vertically connected to one end of the bottom of the connecting base plate and an adjusting top locking plate provided at the other end. A top locking bolt is threadedly connected to the adjusting top locking plate, and the top locking bolt extends in the horizontal direction.
3. The anti-reverse damping device for packaging film material according to claim 2, characterized in that, The pressure block mounting base has an L-shaped structure, with one end connected to the connecting base plate and the other end provided with a protrusion for the damping pressure block to hinge.
4. The anti-reverse damping device for packaging film material according to claim 3, characterized in that, The end of the pressure block mounting base connected to the connecting base plate is provided with multiple adjusting grooves, and the connecting base plate is provided with fixing holes corresponding to the adjusting grooves. Fixing bolts connected to the fixing holes are provided in the adjusting grooves.
5. The anti-reverse damping device for packaging film material according to claim 2, characterized in that, The pressure block mounting base is hinged to the damping pressure block at one end and a through hole is provided. The adjustment assembly includes a sleeve installed in the through hole and an elastic element disposed in the sleeve. An adjustment structure is also installed on the sleeve. The two ends of the elastic element are in contact with the damping pressure block and the adjustment structure, respectively.
6. The anti-reverse damping device for packaging film material according to claim 5, characterized in that, The adjustment structure includes an adjustment nut welded to the end of the sleeve, an adjustment bolt threadedly connected to the adjustment nut, the adjustment bolt contacting the elastic element, and the adjustment nut being located at the end of the sleeve away from the pressure block mounting base.
7. The anti-reverse damping device for packaging film material according to claim 6, characterized in that, The elastic element is a spring, and its two ends are in contact with the damping block and the adjusting bolt, respectively.
8. The anti-reverse damping device for packaging film material according to claim 1, characterized in that, The damping block is also provided with a damping belt on the side that contacts the roller.
9. The anti-reverse damping device for packaging film material according to claim 2, characterized in that, The connecting base plate is also provided with locking plate holes for installing the adjusting top locking plate. The adjusting top locking plate is installed on the connecting base plate by locking plate bolts and locking plate nuts that cooperate with them.
10. The anti-reverse damping device for packaging film material according to claim 3, characterized in that, The pressure block mounting base is provided with two mutually symmetrical protrusions, and the damping pressure block is located between the two protrusions. Hinged side plates are also provided on both sides of the damping pressure block. Hinged holes are opened on the protrusions, and hinged bolts that penetrate the hinged side plates and the protrusions are provided in the hinged holes.