Soft film packaging bag feeding device with tensioning structure
By introducing an air gap into the guide roller and adjusting the tension with a motor, the problems of adhesion and unstable tension of soft film packaging bags during transportation are solved, achieving a smooth and stable transportation effect.
Patent Information
- Application Number
- CN202521992903.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2026-07-14
- Estimated Expiration
- 2035-09-17
AI Technical Summary
In existing technologies, flexible film packaging bags tend to stick to the guide rollers during the conveying process, resulting in uneven conveying, especially for flexible film packaging bags with high flexibility. Furthermore, it is difficult to effectively ensure tension, which affects the conveying quality.
The feeding device with a tension structure introduces air through the air outlet on the guide roller to form an air gap to prevent sticking. At the same time, the tension is adjusted by a resistive pressure sensor and a servo motor to ensure the normal tension of the packaging bag.
This achieves smooth conveying between the flexible film packaging bag and the guide roller, avoiding sticking damage, ensuring the tension stability of the packaging bag, and improving the conveying quality.
Smart Images
Figure CN224493156U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of roll material conveying technology, specifically a soft film packaging bag feeding device with a tensioning structure. Background Technology
[0002] During the production, processing, and conveying of packaging bags, cutting or heat-sealing operations are sometimes performed at the end of the conveying process. Therefore, it is necessary to control the conveying of the packaging bags to stop at the front end of the processing position. In existing technologies, the feeding of packaging bags is generally continuous. Therefore, a guide roller that can lift the packaging bag is installed in the middle of the packaging bag conveying device to control the continuous tension of the packaging bag. Through the coordinated operation of the lifting and lowering of the guide roller and the material feeding structure, the packaging bag is made stationary at the end of the conveying process. However, during the lifting process of the packaging bag by the guide roller, the guide roller and the packaging bag on the guide roller are in a relatively stationary state, and the guide roller has a certain tension on the packaging bag, which can cause the packaging bag to stick to the guide roller. It is impossible to ensure the smoothness between the packaging bag and the guide roller. Especially when conveying some soft film packaging bags, it may even cause damage to the soft film packaging bags. At the same time, because the soft film packaging bags have a certain degree of flexibility, the coordinated operation of the lifting and lowering of the guide roller and the material feeding structure cannot effectively ensure that the soft film packaging bags are conveyed with constant tension, which affects the conveying quality of the soft film packaging bags. Utility Model Content
[0003] The purpose of this invention is to provide a soft film packaging bag feeding device with a tensioning structure to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a soft film packaging bag feeding device with a tensioning structure, comprising a fixed frame, an mounting frame installed in the middle of the fixed frame, the mounting frame being liftable, a guide roller rotatably mounted in the middle of the mounting frame via a bearing, the guide roller having a hollow center, and air vents arranged in a circular array at equal intervals in the middle of the guide roller, an air inlet pipe rotatably mounted at one end of the guide roller via a mechanical seal, the air inlet pipe being connected to the air outlet of a blower via a pipe, a rotating shaft rotatably mounted on one side of the mounting frame via a bearing, mounting plates fixedly mounted at both ends of the rotating shaft, mounting seats slidably mounted at the ends of the mounting plates, an adjusting rod rotatably mounted between the two mounting seats via a bearing, and a resistive pressure sensor fixedly mounted at the end of the mounting plate corresponding to the position above the mounting seat, the mounting seat being in pressure contact with the resistive pressure sensor.
[0005] As a further preferred embodiment of this technical solution, a hydraulic rod is fixedly installed on the top of the fixing frame, the movable end of the hydraulic rod is slidably connected to the fixing frame and passes through the fixing frame to be fixedly connected to the mounting frame, and limit rods are symmetrically fixedly installed on the top of the mounting frame, the limit rods being slidably connected to the top of the fixing frame.
[0006] As a further preferred embodiment of this technical solution, a sealing rod is fixedly installed at one end of the mounting frame. The sealing rod is located inside the guide roller, and an air guide groove along the central axis of the sealing rod is opened at the outer wall of the top end of the sealing rod.
[0007] As a further preferred embodiment of this technical solution, a first servo motor is fixedly mounted on the top of the mounting bracket, a drive gear is fixedly mounted on the output end of the first servo motor, and a driven gear is fixedly mounted on the outer side of the guide roller near the air inlet pipe, the driven gear being meshed with the drive gear.
[0008] As a further preferred embodiment of this technical solution, a positioning block is fixedly installed on one inner wall of the fixing frame, and the air intake pipe is slidably connected to the middle of the positioning block.
[0009] As a further preferred embodiment of this technical solution, a second servo motor is fixedly mounted on one end of the mounting bracket corresponding to the position of the rotating shaft, and the output end of the second servo motor is fixedly connected to the end of the rotating shaft through a shaft connector.
[0010] As a further preferred embodiment of this technical solution, the mounting plate is symmetrically fixedly mounted with fixing rods at its ends, and the mounting base is slidably mounted between the two fixing rods.
[0011] This utility model provides a feeding device for soft film packaging bags with a tensioning structure, which has the following beneficial effects:
[0012] (1) This utility model passes the soft film packaging bag through the bottom of the adjusting roller and through the top of the guide roller. When processing the soft film packaging bag at the end of the processing device, the rotation of the guide roller is canceled and the mounting frame is raised, which will drive the guide roller to rise. As the soft film packaging bag is continuously fed, the soft film packaging bag at the end of the processing device will be stopped, and the guide roller will be stopped rotating at the same time. During this process, air is introduced into the air inlet pipe through the blower, and the air will be discharged through the air outlet on the guide roller. An air gap can be formed between the guide roller and the soft film packaging bag to prevent the guide roller from sticking and adsorbing with the soft film packaging bag during the rising process.
[0013] (2) In this utility model, during the continuous process of the soft film packaging bag, the soft film packaging bag will be relatively squeezed with the adjusting rod. When the tension of the soft film packaging bag is small, the rotating shaft is controlled to rotate. The adjusting rod installed on the rotating shaft will press down on the soft film packaging bag. The soft film packaging bag will squeeze the adjusting rod in the opposite direction. The mounting seat connected to the adjusting rod will squeeze the resistive pressure sensor. When the value of the resistive pressure sensor reaches the specified range, it indicates that the tension of the soft film packaging bag is within the normal range, thus realizing the real-time adjustment of the tension of the soft film packaging bag. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is one of the partial structural schematic diagrams of this utility model;
[0016] Figure 3 This is a partial cross-sectional view of the present invention.
[0017] Figure 4 This is a second partial structural schematic diagram of the present invention;
[0018] In the diagram: 1. Fixed frame; 2. Mounting frame; 3. Guide roller; 4. Air outlet; 5. Air inlet pipe; 6. Fixed rod; 7. Rotating shaft; 8. Mounting plate; 9. Mounting base; 10. Adjusting roller; 11. Resistive pressure sensor; 12. Hydraulic rod; 13. Limiting rod; 14. Sealing rod; 15. Air guide groove; 16. First servo motor; 17. Drive gear; 18. Driven gear; 19. Positioning block; 20. Second servo motor. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0020] This utility model provides a technical solution: such as Figures 1 to 4As shown, in this embodiment, a soft film packaging bag feeding device with a tensioning structure includes a fixed frame 1, a mounting frame 2 installed in the middle of the fixed frame 1, the mounting frame 2 being liftable, a guide roller 3 rotatably mounted in the middle of the mounting frame 2 via a bearing, the guide roller 3 being hollow in the middle, and having air outlet holes 4 evenly spaced and arranged in a circular array in the middle of the guide roller 3, with an air inlet pipe 5 rotatably mounted at one end of the guide roller 3 via a mechanical seal, the air inlet pipe 5 being connected to the air outlet of a blower via a pipe, the mounting frame 1 being hollow in the middle of the fixed frame 1, the mounting frame 2 being liftable, a guide roller 3 being hollow in the middle of the fixed frame 1, and an air outlet hole 4 being arranged in a circular array at an equidistant distance, the air outlet hole 4 being hollow in the middle of the guide roller 3, and an air inlet pipe 5 being rotatably mounted at one end of the guide roller 3 via a mechanical seal, the air inlet pipe 5 being connected to the air outlet of a blower via a pipe, the air outlet pipe 5 being hollow in the middle of the fixed frame 1, the mounting frame 2 ... A rotating shaft 7 is rotatably mounted on one side of the mounting bracket 2 via a bearing. Mounting plates 8 are fixedly mounted on both ends of the rotating shaft 7. Mounting seats 9 are slidably mounted on the ends of the mounting plates 8. An adjusting roller 10 is rotatably mounted between the two mounting seats 9 via a bearing. A resistive pressure sensor 11 is fixedly mounted on the end of the mounting plate 8 corresponding to the position above the mounting seat 9. The mounting seat 9 and the resistive pressure sensor 11 are in pressure contact. The soft film packaging bag passes under the adjusting roller 10 and over the guide roller 3, at the end of the processing device. During the processing of the flexible film packaging bags, the rotation of the guide roller 3 is deactivated, and the mounting frame 2 is raised, which in turn raises the guide roller 3. As the flexible film packaging bags are continuously fed, the flexible film packaging bags at the end of the processing device are stopped, and the guide roller 3 stops rotating. During this process, air is introduced into the air inlet pipe 5 through a blower, and the air is discharged through the air outlet 4 on the guide roller 3. This can control the formation of an air gap between the guide roller 3 and the flexible film packaging bag, preventing the guide roller 3 from sticking to the flexible film packaging bag during its ascent. During the continuous adsorption process, the flexible film packaging bag will be relatively squeezed against the adjusting roller 10. When the tension of the flexible film packaging bag is small, the rotating shaft 7 is controlled to rotate, and the adjusting roller 10 installed on the rotating shaft 7 will press down on the flexible film packaging bag. The flexible film packaging bag will squeeze the adjusting roller 10 in the opposite direction. The mounting seat 9 connected to the adjusting roller 10 will squeeze the resistive pressure sensor 11. When the value of the resistive pressure sensor 11 reaches the specified range, it indicates that the tension of the flexible film packaging bag is within the normal range, thus realizing the real-time adjustment of the tension of the flexible film packaging bag.
[0021] like Figures 1 to 4 As shown, a hydraulic rod 12 is fixedly installed on the top of the fixed frame 1. The moving end of the hydraulic rod 12 is slidably connected to the fixed frame 1 and passes through the fixed frame 1 to be fixedly connected to the mounting frame 2. Limiting rods 13 are symmetrically fixedly installed on the top of the mounting frame 2. The limiting rods 13 are slidably connected to the top of the fixed frame 1.
[0022] The hydraulic rod 12 drives the mounting frame 2 to rise, which in turn drives the guide roller 3 to rise. As the soft film packaging bag is continuously fed, the soft film packaging bag at the end of the processing device will be stopped.
[0023] like Figures 1 to 4As shown, a sealing rod 14 is fixedly installed at one end of the mounting frame 2. The sealing rod 14 is located inside the guide roller 3. An air guide groove 15 is provided on the outer wall of the top end of the sealing rod 14 along the central axis of the sealing rod 14.
[0024] During the ventilation process, the sealing rod 14 blocks the air outlets 4 at other positions of the guide roller 3, so that the gas will only be discharged from the air outlet 4 at the top of the guide roller 3, thereby blowing the soft film packaging bag at the contact point with the guide roller 3.
[0025] like Figures 1 to 4 As shown, a first servo motor 16 is fixedly installed on the top of the mounting bracket 2, and a drive gear 17 is fixedly installed on the output end of the first servo motor 16. A driven gear 18 is fixedly installed on the outer side of the guide roller 3 near the air inlet pipe 5, and the driven gear 18 is meshed with the drive gear 17.
[0026] During the conveying process of the soft film packaging bag, the first servo motor 16 controls and drives the drive gear 17 to rotate. The driven gear 18 meshes with the drive gear 17 to drive the guide roller 3 to rotate, thereby realizing the synchronous conveying of the soft film packaging bag passing through the guide roller 3.
[0027] like Figures 1 to 4 As shown, a positioning block 19 is fixedly installed on one inner wall of the fixing frame 1, and the air intake pipe 5 is slidably connected to the middle of the positioning block 19.
[0028] When the guide roller 3 is raised, the air inlet pipe 5 installed on the guide roller 3 can be positioned by the positioning block 19 to prevent the air inlet pipe 5 from rotating.
[0029] like Figures 1 to 4 As shown, a second servo motor 20 is fixedly installed at one end of the mounting bracket 2 corresponding to the position of the rotating shaft 7, and the output end of the second servo motor 20 is fixedly connected to the end of the rotating shaft 7 through a shaft connector.
[0030] The rotation of the shaft 7 can be controlled by the second servo motor 20, so as to achieve precise rotation of the shaft 7.
[0031] like Figures 1 to 4 As shown, the mounting plate 8 has symmetrically fixed rods 6 at its ends, and the mounting base 9 is slidably installed between the two fixed rods 6.
[0032] The fixed rod 6 positions and stably supports the movement of the mounting base 9.
[0033] This utility model provides a feeding device for soft film packaging bags with a tensioning structure, the specific working principle of which is as follows:
[0034] When the device is in use, the soft film packaging bag passes under the adjusting roller 10 and over the guide roller 3. During the conveying of the soft film packaging bag, the first servo motor 16 controls the rotation of the drive gear 17. The meshing of the driven gear 18 with the drive gear 17 drives the guide roller 3 to rotate, thus achieving synchronous conveying of the soft film packaging bag passing through the guide roller 3. When processing the soft film packaging bag at the end of the processing device, the rotation of the guide roller 3 is deactivated, and the mounting frame 2 is raised by the hydraulic rod 12, which in turn raises the guide roller 3. As the soft film packaging bag is processed, the guide roller 3 is moved upwards. The continuous feeding of the bag will stop the soft film packaging bag at the end of the processing device and stop the rotation of the guide roller 3. During this process, air is introduced into the air inlet pipe 5 through the blower. The air will be discharged through the air outlet 4 on the guide roller 3. During the ventilation process, the sealing rod 14 blocks the air outlet 4 at other positions of the guide roller 3. The gas will only be discharged from the air outlet 4 at the top of the guide roller 3. This can control the formation of an air gap between the guide roller 3 and the soft film packaging bag to prevent the guide roller 3 from sticking and adsorbing with the soft film packaging bag during the rising process.
[0035] During the continuous process of applying pressure to the flexible film packaging bag, the flexible film packaging bag will be relatively squeezed against the adjusting roller 10. When the tension of the flexible film packaging bag is small, the second servo motor 20 controls the rotating shaft 7 to rotate. The adjusting roller 10 installed on the rotating shaft 7 will press down on the flexible film packaging bag, and the flexible film packaging bag will squeeze the adjusting roller 10 in the opposite direction. The mounting seat 9 connected to the adjusting roller 10 will squeeze the resistive pressure sensor 11. When the value of the resistive pressure sensor 11 reaches the specified range, it indicates that the tension of the flexible film packaging bag is within the normal range, thus realizing the real-time adjustment of the tension of the flexible film packaging bag.
[0036] 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 feeding device for soft film packaging bags with a tensioning structure, comprising a fixing frame (1), characterized in that: A mounting frame (2) is installed in the middle of the fixed frame (1). The mounting frame (2) can be raised and lowered. A guide roller (3) is rotatably mounted in the middle of the mounting frame (2) via a bearing. The middle of the guide roller (3) is hollow. Air outlet holes (4) are equidistantly and in a circular array in the middle of the guide roller (3). An air inlet pipe (5) is rotatably mounted at one end of the guide roller (3) via a mechanical seal. The air inlet pipe (5) is connected to the air outlet of the blower via a pipe. A rotating shaft (7) is rotatably mounted on one side of the mounting frame (2) via a bearing. Mounting plates (8) are fixedly mounted at both ends of the rotating shaft (7). Mounting seats (9) are slidably mounted at the ends of the mounting plates (8). An adjusting rod (10) is rotatably mounted between the two mounting seats (9) via a bearing. A resistive pressure sensor (11) is fixedly mounted at the end of the mounting plate (8) corresponding to the position above the mounting seat (9). The mounting seat (9) and the resistive pressure sensor (11) are in contact.
2. The soft film packaging bag feeding device with a tensioning structure according to claim 1, characterized in that: A hydraulic rod (12) is fixedly installed on the top of the fixed frame (1). The moving end of the hydraulic rod (12) is slidably connected to the fixed frame (1) and passes through the fixed frame (1) to be fixedly connected to the mounting frame (2). Limiting rods (13) are symmetrically fixedly installed on the top of the mounting frame (2). The limiting rods (13) are slidably connected to the top of the fixed frame (1).
3. The soft film packaging bag feeding device with a tensioning structure according to claim 2, characterized in that: A sealing rod (14) is fixedly installed at one end of the mounting bracket (2). The sealing rod (14) is located inside the guide roller (3). An air guide groove (15) along the central axis of the sealing rod (14) is opened at the top outer wall position of the sealing rod (14).
4. The soft film packaging bag feeding device with a tensioning structure according to claim 3, characterized in that: The top of the mounting bracket (2) is fixedly mounted with a first servo motor (16), and the output end of the first servo motor (16) is fixedly mounted with a drive gear (17). The outer side of the guide roller (3) near the air inlet pipe (5) is fixedly mounted with a driven gear (18), and the driven gear (18) meshes with the drive gear (17).
5. A soft film packaging bag feeding device with a tensioning structure according to claim 1, characterized in that: A positioning block (19) is fixedly installed on one side of the inner wall of the fixed frame (1), and the air inlet pipe (5) is slidably connected to the middle of the positioning block (19).
6. A soft film packaging bag feeding device with a tensioning structure according to claim 1, characterized in that: One end of the mounting bracket (2) is fixedly mounted with a second servo motor (20) corresponding to the position of the rotating shaft (7). The output end of the second servo motor (20) is fixedly connected to the end of the rotating shaft (7) through a shaft connector.
7. A soft film packaging bag feeding device with a tensioning structure according to claim 1, characterized in that: The mounting plate (8) is symmetrically fixedly mounted with fixing rods (6) at its ends, and the mounting base (9) is slidably mounted between the two fixing rods (6).