Self-adaptive freshness protection bag production tension adjusting device
By using an adaptive tension adjustment device for food preservation bags, which utilizes a pressure sensor and a motor-driven support arm structure, automatic tension adjustment of food preservation bags is achieved. This solves the problem of long adjustment time in existing equipment and improves production efficiency and equipment flexibility.
Patent Information
- Application Number
- CN202520547054.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-26
AI Technical Summary
The existing tensioning equipment is fixed and requires overall movement and adjustment, which cannot be adjusted in real time, resulting in low production efficiency of food preservation bags.
An adaptive tension adjustment device for food preservation bag production was designed. It utilizes a pressure sensor and a motor-driven support arm structure to achieve automatic adjustment of the pressure roller and adjust the tension in real time according to the tightness of the food preservation bag.
It enables automatic tension adjustment of food storage bags, reducing adjustment time, improving production efficiency and equipment flexibility, and preventing insufficient tension from affecting subsequent processes.
Smart Images

Figure CN223836747U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tension adjustment equipment, specifically to an adaptive tension adjustment device for the production of food preservation bags. Background Technology
[0002] Food storage bags are packaging containers made of plastic materials and are one of the most common food preservation products. During the production process, rotating rollers are used to transport and process them. To ensure the smooth operation of the transport, cutting, and rolling processes, the food storage bags need to be kept taut; otherwise, it will affect the normal operation of these processes.
[0003] Current tensioning equipment is fixed, requiring the entire device to be moved for each adjustment. It cannot be adjusted in real time as needed, resulting in a long adjustment time and severely impacting the production efficiency of food storage bags. Therefore, an adaptive tension adjustment device for food storage bag production is proposed. Utility Model Content
[0004] The technical problem this invention aims to solve is that current tensioning equipment is fixed, requiring the entire device to be moved for each adjustment, and cannot be adjusted in real time as needed. This results in a long adjustment time each time, seriously affecting the production efficiency of food storage bags. This invention provides an adaptive tension adjustment device for food storage bags, which can be adjusted in real time as needed without manual adjustment, thus reducing time significantly and improving production efficiency.
[0005] The technical solution adopted by this utility model to solve the technical problem is: an adaptive tension adjustment device for producing food preservation bags, including a slide rail, two slide rails are provided, a pair of sliders are slidably connected in each slide rail, a follower block is detachably connected to the top of each slider, a support arm is provided on one side of each follower block, a fixed block is provided on the side wall of the support arm away from the follower block, a telescopic block is telescopically connected in the fixed block, and a pressure roller is rotatably connected to one side wall of the telescopic block.
[0006] As a preferred technical solution of this utility model, the fixed block has a movable groove, one end of the telescopic block is telescopically inserted into the movable groove, a pressure sensor is embedded in the middle of the bottom side wall of the movable groove, and springs are fixedly connected to the bottom of the movable groove and near the four corners. The springs are fixedly connected to the bottom side wall of the telescopic block by one end.
[0007] As a preferred embodiment of this utility model, the telescopic block extends into the bottom side wall of the movable groove and is fixedly connected to a pressing column, which corresponds to a pressure sensor. A rotating column is fixedly connected to one side wall of the fixed block.
[0008] As a preferred technical solution of this utility model, a rotating groove is provided on the side wall near one end of the support arm, and a rubber ring is fixedly connected to the inner wall of the rotating groove and rotated and sleeved on the rotating column. The fixed block and telescopic block connected to each pair of support arms face opposite directions, and each slider slides independently in the slide rail.
[0009] As a preferred technical solution of this utility model, a motor is detachably embedded in the side wall of the follower block near one end, the output end of the motor is detachably connected to the side wall of one end of the support arm, and a food preservation bag is placed on the pressing roller.
[0010] This invention has the following advantages: The slider is driven to slide along the slide rail to a designated position as needed, and then the motor is started to drive the support arm to rotate, thereby moving the pressing roller to a suitable position. The two pressing rollers work together to open and tighten the food storage bag located between them. Because a pressure sensor is connected in the movable groove, and a pressing column is fixed at the bottom of the telescopic block, pressure is applied to the telescopic block when the food storage bag is tightened. This pressure is transmitted to the pressure sensor through the pressing column. The pressure data obtained from the pressure sensor is used to adjust the position and tilt angle of the support arm in real time, achieving automatic adjustment and avoiding prolonged delays in tension adjustment that could affect overall processing efficiency. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;
[0012] Figure 2 This is an exploded structural diagram of a preferred embodiment of the present invention;
[0013] Figure 3 This is an exploded view of the slide rail structure according to a preferred embodiment of the present invention.
[0014] Explanation of reference numerals in the attached drawings: 1. Slide rail; 2. Slider; 3. Follower block; 4. Support arm; 5. Fixed block; 6. Telescopic block; 7. Pressing roller; 8. Food preservation bag; 9. Movable groove; 10. Spring; 11. Pressure sensor; 12. Pressing column; 13. Rotary groove; 14. Rotating column; 15. Motor. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings.
[0016] Please refer to the following: Figure 1-3This utility model discloses an adaptive tension adjustment device for producing food preservation bags, including a slide rail 1. Two slide rails 1 are provided. A pair of sliders 2 are slidably connected in each slide rail 1. A follower block 3 is detachably connected to the top of each slider 2. A support arm 4 is provided on one side of each follower block 3. A fixing block 5 is provided on the side wall of the support arm 4 away from the follower block 3. A telescopic block 6 is telescopically connected in the fixing block 5. A pressure roller 7 is rotatably connected to one side wall of the telescopic block 6.
[0017] The fixed block 5 has a movable groove 9. One end of the telescopic block 6 is telescopically inserted into the movable groove 9. A pressure sensor 11 is embedded in the middle of the bottom side wall of the movable groove 9. Springs 10 are fixedly connected to the bottom of the movable groove 9 and near the four corners. One end of the spring 10 is fixedly connected to the bottom side wall of the telescopic block 6. A pressing column 12 is fixedly connected to the middle of the bottom side wall of the telescopic block 6 extending into the movable groove 9. The pressing column 12 corresponds to the pressure sensor 11. A rotating column 14 is fixedly connected to one side wall of the fixed block 5.
[0018] The technical benefits of this solution are as follows: the movement of the support arm 4 can drive the pressure roller 7 to move synchronously. Because the fixed block 5 and the support arm 4 are rotatably connected, the tilt angle of the fixed block 5 can be adjusted within a certain range. When the two pressure rollers 7 cooperate to tension and straighten the food storage bag 8, they will exert pressure on the pressure roller 7. The pressure data will be obtained by pressing the pressure sensor 11 through the pressure column 12. The pressure data changes indicate the pressure exerted by the food storage bag 8 on the pressure roller 7. The positions of the support arm 4 and the follower block 3 are automatically adjusted according to the data to ensure that the food storage bag 8 is effectively restricted and kept in a stable tensioned and straight state. In this way, the time wasted in tension adjustment can be effectively reduced, and both can be adjusted independently, increasing the flexibility and practicality of the equipment application.
[0019] A rotating groove 13 is provided on one side wall of the support arm 4. A rubber ring is fixedly connected to the inner wall of the rotating groove 13 and rotates and is sleeved on the rotating column 14. The fixed block 5 and telescopic block 6 connected to each pair of support arms 4 face opposite directions. Each slider 2 slides independently in the slide rail 1. A motor 15 is detachably embedded in the side wall of the follower block 3 near one end. The output end of the motor 15 is detachably connected to the side wall of one end of the support arm 4. A plastic bag 8 is placed in close contact with the pressing roller 7.
[0020] The technical effect of this solution is as follows: the starting motor 15 drives the support arm 4 to rotate, thereby adjusting the support arm 4 and the fixed block 5. The slider 2 can drive the follower block 3 and the support arm 4 to move along the slide rail 1, achieving a dual adjustment effect and improving the flexibility of adjustment. In this way, the tension is automatically adjusted to ensure that the preservation bag 8 is always taut, avoiding the impact on subsequent processing steps due to the preservation bag 8 not being taut.
[0021] Specifically, in use, the food storage bag 8 is passed through the pressing roller 7, and then the motor 15 is started to drive the support arm 4 to rotate, thereby moving the pressing roller 7 and pressing or supporting it on the food storage bag 8. The food storage bag 8 between the two pressing rollers 7 is stretched taut in this staggered manner. The number of pressing rollers 7 can be adjusted as needed, as long as the orientation of the fixed block 5 and the telescopic block 6 is opposite and staggered. The food storage bag 8 is inserted between the pressing rollers 7 in a wave-like shape. As the food storage bag 8 tightens, it will apply pressure to the pressing roller 7. The position of the support arm 4 and the follower block 3 is adjusted according to the pressure change to ensure the pressing state of the food storage bag 8, so that the food storage bag 8 is always taut and to avoid affecting subsequent production processes due to the food storage bag 8 not being taut.
[0022] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
[0023] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An adaptive tension adjustment device for food preservation bag production, comprising a slide rail (1), characterized in that, Two slide rails (1) are provided. A pair of sliders (2) are slidably connected in each slide rail (1). A follower block (3) is detachably connected to the top of each slider (2). A support arm (4) is provided on one side of each follower block (3). A fixing block (5) is provided on the side wall of the support arm (4) away from the follower block (3). A telescopic block (6) is telescopically connected in the fixing block (5). A pressing roller (7) is rotatably connected to one side wall of the telescopic block (6).
2. The adaptive tension adjustment device for food preservation bag production as described in claim 1, characterized in that, The fixed block (5) has a movable groove (9) inside. One end of the telescopic block (6) is telescopically inserted into the movable groove (9). A pressure sensor (11) is embedded in the middle of the bottom side wall of the movable groove (9). Springs (10) are fixedly connected to the bottom of the movable groove (9) and near the four corners. The springs (10) are fixedly connected to the bottom side wall of the telescopic block (6) at one end.
3. The adaptive tension adjustment device for producing food preservation bags as described in claim 1, characterized in that, The telescopic block (6) extends into the inner side wall of the movable groove (9) and is fixedly connected to a pressing column (12). The pressing column (12) corresponds to the pressure sensor (11). A rotating column (14) is fixedly connected to one side wall of the fixed block (5).
4. The adaptive tension adjustment device for producing food preservation bags as described in claim 1, characterized in that, The support arm (4) has a rotating groove (13) on one side wall. A rubber ring is fixedly connected to the inner wall of the rotating groove (13) and rotated and sleeved on the rotating column (14). The fixed block (5) and telescopic block (6) connected to each pair of support arms (4) face opposite directions. Each slider (2) slides independently in the slide rail (1).
5. The adaptive tension adjustment device for food preservation bag production as described in claim 1, characterized in that, The follower block (3) is detachably embedded in the side wall near one end, and the output end of the motor (15) is detachably connected to the side wall of one end of the support arm (4). The pressing roller (7) is fitted with a food preservation bag (8).