A woven bag printing bag feeding mechanism
The bag feeding mechanism, which combines negative pressure rollers and guide plates, solves the problem of manual splitting and feeding in woven bag printing, realizes automated separation and conveying of woven bags, and improves production efficiency and cycle coordination.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZAOYANG DONGHANG WOVEN PRINTING CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-06-30
AI Technical Summary
In the existing woven bag printing process, the woven bags need to be manually disassembled and fed into the printing equipment after being cut, which results in low production efficiency and increased labor costs.
The system uses a combination of negative pressure rollers and guide plates to automatically separate and transport woven bags using negative pressure attraction. Combined with support springs and limit bars, it achieves automated separation and transport of woven bags.
It enables automatic separation and conveying of woven bags, improving production efficiency, reducing labor costs, and enhancing the coordination of production rhythm.
Smart Images
Figure CN224429542U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of printing equipment technology, and relates to a bag feeding mechanism for printing woven bags. Background Technology
[0002] In the packaging industry, woven bags are widely used in various fields such as chemicals, building materials, food, and agriculture due to their good tensile strength, durability, and low production cost. To enhance product identification, aesthetics, and brand promotion, woven bags are usually printed during the production process to display text, patterns, trademarks, and other content.
[0003] Currently, the printing process for woven bags generally involves printing directly onto the uncut, continuous woven fabric after the entire woven fabric has been completed. The bags are then cut and sewn according to specifications. This method allows for continuous, high-speed printing, suitable for mass production, and offers high production efficiency and print quality. However, in certain specific applications, such as personalized customization, small-batch multi-variety production, or woven bags with special shapes, it is often necessary to first cut the woven fabric into individual bags and then print on each individual bag.
[0004] For the post-cutting printing process, woven bags are often stored and transported together in stacks due to their flexibility and ease of stacking. However, in the subsequent printing process, these stacked woven bags need to be manually unpacked, unfolded, and fed into the printing equipment for printing. This process not only consumes a lot of manpower and increases labor costs, but the unpacking and feeding process is also cumbersome, easily causing production rhythm incoordination and reducing overall production efficiency. Utility Model Content
[0005] The purpose of this utility model is to provide a bag feeding mechanism for woven bag printing, which can realize the automatic separation and conveying of woven bags, thereby replacing manual labor and improving production efficiency.
[0006] To solve the above technical problems, this utility model provides a bag feeding mechanism for woven bag printing, including a bracket. A horizontally arranged negative pressure roller is rotatably connected to the upper end of the bracket. Rotating sleeves are provided at both ends of the negative pressure roller. Two rotating shafts are provided at the upper end of the bracket and are respectively rotatably connected to the corresponding rotating sleeves. A drive motor for driving the negative pressure roller to rotate is installed at the upper end of the bracket. Several negative pressure holes are opened on the outer side of the negative pressure roller. An arc-shaped baffle plate for covering the horizontal side inside the negative pressure roller is provided. Both sides of the arc-shaped baffle plate are connected to the corresponding rotating shafts through fan-shaped connecting pieces. A through hole communicating with the inside of the negative pressure roller is opened through one of the rotating shafts. A negative pressure connecting pipe is provided outward from the through hole.
[0007] A feeding conveyor is provided below the negative pressure roller in a direction away from the arc-shaped baffle plate. A woven bag stacking frame with an open top is placed on the upper end of the feeding conveyor. A printing conveyor is provided outward on the side of the negative pressure roller away from the feeding conveyor. A guide plate that fits against the upper outer wall of the negative pressure roller is provided on the end of the printing conveyor near the negative pressure roller.
[0008] By adopting the above technical solution, during woven bag printing, stacked woven bags are placed in a woven bag stacking frame, and the stacking frame is placed on a feeding conveyor. The feeding conveyor drives the stacking frame to move below the negative pressure roller, ensuring that the topmost woven bag is at a certain distance from the negative pressure roller. The drive motor drives the negative pressure roller to rotate towards the printing conveyor, and the negative pressure pump is activated, generating negative pressure inside the roller. This negative pressure attraction, generated through the negative pressure holes, lifts one side of the upper woven bag. As the roller rotates, the woven bag gradually comes into contact with the outside of the negative pressure roller. As the roller rotates, it moves to the position of the arc-shaped baffle plate, gradually losing its attraction to the woven bag, causing it to move to the guide plate and slide down onto the conveyor belt of the printing conveyor. The woven bags are then transported and printed by the printing conveyor, thus achieving automatic separation and transport of the woven bags.
[0009] The present invention is further configured such that a transmission gear is connected to the outer side of one of the rotating sleeves, and a drive gear is connected to the power output shaft of the drive motor. The drive gear and the transmission gear are driven by a gear transmission belt.
[0010] The present invention is further configured such that a support plate capable of sliding up and down is slidably connected inside the woven bag stacking frame, and a plurality of support springs are provided between the lower end of the support plate and the bottom of the woven bag stacking frame.
[0011] The present invention is further configured such that limit stops are provided on both sides of the guide plate, and each limit stop is connected to the outer side of the printing conveyor.
[0012] The present invention is further configured such that the upper edge of the guide plate contacts the outer wall of the negative pressure roller at the arc-shaped blocking plate, and the lower edge of the guide plate extends to the surface of the conveyor belt of the printing conveyor.
[0013] The present invention is further provided that the outer side of the conveyor belt of the feeding conveyor is provided with a plurality of limiting bars arranged along its length direction.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] Firstly, this utility model uses a rotating negative pressure roller to attract woven bags one by one through negative pressure attraction, thereby achieving the separation of woven bags. After the negative pressure roller rotates to the position of the arc-shaped baffle plate, its attraction force gradually moves to the guide plate, and slides down the guide plate to the printing conveyor, so as to realize the automatic separation and conveying of woven bags, replacing manual labor and improving production efficiency.
[0016] Secondly, this utility model utilizes a woven bag stacking frame to place stacked woven bags. As the upper layer of woven bags is gradually separated, its internal weight is reduced. Under the action of the support spring, the inner woven bags are gradually raised, ensuring that the negative pressure hole has sufficient negative pressure attraction on the upper layer of woven bags. This also allows more woven bags to be placed in the woven bag stacking frame at one time. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 Used to demonstrate the positional relationship between the negative pressure roller and the feeding conveyor;
[0019] Figure 3 This is a partial cross-sectional view used to show the arc-shaped baffle plate inside the negative pressure roller;
[0020] Figure 4 Used to display the support springs inside the woven bag stacking frame.
[0021] The components include: 1. Support frame; 2. Negative pressure roller; 3. Rotating sleeve; 4. Rotating shaft; 5. Drive motor; 6. Transmission gear; 7. Drive gear; 8. Gear transmission belt; 9. Negative pressure hole; 10. Arc-shaped baffle plate; 11. Fan-shaped connecting piece; 12. Negative pressure connecting pipe; 13. Feeding conveyor; 14. Limiting stop bar; 15. Woven bag stacking frame; 16. Bearing plate; 17. Support spring; 18. Printing conveyor; 19. Guide plate; 20. Limiting stop edge. Detailed Implementation
[0022] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the bag feeding mechanism for woven bag printing according to this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.
[0023] Example, refer to Figure 1-4A bag feeding mechanism for woven bag printing includes a support 1. A horizontally arranged negative pressure roller 2 is rotatably connected to the upper end of the support 1. A rotating sleeve 3 is provided at both ends of the negative pressure roller 2. Two rotating shafts 4 are provided at the upper end of the support 1 and are respectively rotatably connected to the corresponding rotating sleeves 3. A drive motor 5 is installed at the upper end of the support 1. A transmission gear 6 is connected to the outer side of one of the rotating sleeves 3. A drive gear 7 is connected to the power output shaft of the drive motor 5. The drive gear 7 and the transmission gear 6 are transmitted through a gear transmission belt 8, so that the drive motor 5 can drive the negative pressure roller 2 to rotate. The negative pressure roller 2 has several negative pressure holes 9 on its outer side. The negative pressure roller 2 is provided with an arc-shaped baffle plate 10 to cover the horizontal side inside. The arc-shaped baffle plate 10 is in contact with the inner wall of the negative pressure roller 2. Both sides of the arc-shaped baffle plate 10 are connected to the corresponding rotating shaft 4 through a fan-shaped connecting piece 11 to fix the arc-shaped baffle plate 10. A through hole (not shown) is provided through one of the rotating shafts 4 to communicate with the inside of the negative pressure roller 2. A negative pressure connecting pipe 12 is provided outward from the through hole. The negative pressure connecting pipe 12 is used to connect the negative pressure pump.
[0024] A feeding conveyor 13 is provided in the direction away from the arc-shaped baffle plate 10 below the negative pressure roller 2. Multiple limiting bars 14 are provided on the outer side of the conveyor belt of the feeding conveyor 13 along its length. Multiple woven bag stacking frames 15 with open tops are placed at the upper end of the feeding conveyor 13. The woven bag stacking frames 15 are placed at the positions of the limiting bars 14. A support plate 16 that can slide up and down is slidably connected inside the woven bag stacking frame 15. Four support springs 17 are provided between the lower end of the support plate 16 and the bottom of the woven bag stacking frame 15, so that when the number of woven bags in the woven bag stacking frame 15 decreases, the support springs 17 can push the woven bags to move upward. A printing conveyor 18 is installed on the side of the negative pressure roller 2 away from the feeding conveyor 13. A guide plate 19 is installed on the end of the printing conveyor 18 near the negative pressure roller 2, which is in contact with the upper outer wall of the negative pressure roller 2. The woven bags on the negative pressure roller 2 are transferred to the printing conveyor 18 through the guide plate 19. A limiting edge 20 is installed on both sides of the guide plate 19, and each limiting edge 20 is connected to the outer side of the printing conveyor 18. The upper edge of the guide plate 19 contacts the outer wall of the negative pressure roller 2 at the arc-shaped baffle plate 10, and the lower edge of the guide plate 19 extends to the surface of the conveyor belt of the printing conveyor 18.
[0025] Working principle: During woven bag printing, stacked woven bags are placed into the woven bag stacking frame 15, and the woven bag stacking frame 15 is placed on the feeding conveyor 13, with one side close to the limit stop 14 for easy control of the movement position of the woven bag stacking frame 15. The feeding conveyor 13 drives the woven bag stacking frame 15 to move below the negative pressure roller 2, and keeps the topmost woven bag at a certain distance from the negative pressure roller 2. The drive motor 5 drives the negative pressure roller 2 to rotate towards the printing conveyor 18, and the negative pressure pump is started to generate negative pressure inside the negative pressure roller 2. The negative pressure is generated through the negative pressure hole 9 to attract the upper woven bags. The bag is sucked up from one side and gradually comes into contact with the outside of the negative pressure roller 2 as it rotates. As the negative pressure roller 2 rotates, it moves to the position of the arc-shaped baffle plate 10 and gradually loses its attraction to the woven bag, causing it to gradually move to the guide plate 19 and slide down the guide plate 19 onto the conveyor belt of the printing conveyor 18. As the printing conveyor 18 transports and prints the bag, when the number of woven bags in the woven bag stacking frame 15 gradually decreases, the inner woven bags are gradually lifted by the support spring 17 to ensure that the negative pressure hole 9 has sufficient negative pressure attraction to the upper woven bags, so as to realize the automatic separation and transport of the woven bags.
[0026] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.
[0027] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.
Claims
1. A bag feeding mechanism for woven bag printing, comprising a support (1), characterized in that, The upper end of the bracket (1) is rotatably connected to a horizontally arranged negative pressure roller (2). Both ends of the negative pressure roller (2) are provided with rotating sleeves (3). The upper end of the bracket (1) is provided with two rotating shafts (4) that are rotatably connected to the corresponding rotating sleeves (3). The upper end of the bracket (1) is equipped with a drive motor (5) for driving the negative pressure roller (2) to rotate. Several negative pressure holes (9) are opened on the outer side of the negative pressure roller (2). An arc-shaped baffle plate (10) is provided inside the negative pressure roller (2) to cover the horizontal side inside. Both sides of the arc-shaped baffle plate (10) are connected to the corresponding rotating shaft (4) through a fan-shaped connecting piece (11). A through hole communicating with the inside of the negative pressure roller (2) is opened through one of the rotating shafts (4). A negative pressure connecting pipe (12) is provided outward from the through hole. A feeding conveyor (13) is provided in the direction away from the arc-shaped baffle plate (10) in the direction below the negative pressure roller (2). A woven bag stacking frame (15) with an open top is placed on the upper end of the feeding conveyor (13). A printing conveyor (18) is provided outward on the side of the negative pressure roller (2) away from the feeding conveyor (13). A guide plate (19) that fits against the upper outer wall of the negative pressure roller (2) is provided on the end of the printing conveyor (18) close to the negative pressure roller (2).
2. The bag feeding mechanism for woven bag printing according to claim 1, characterized in that, One of the rotating sleeves (3) has a transmission gear (6) connected to its outer side, and the power output shaft of the drive motor (5) is connected to a drive gear (7). The drive gear (7) and the transmission gear (6) are driven by a gear transmission belt (8).
3. The bag feeding mechanism for woven bag printing according to claim 1, characterized in that, The woven bag stacking frame (15) is slidably connected to a support plate (16) that can slide up and down. Multiple support springs (17) are provided between the lower end of the support plate (16) and the bottom of the woven bag stacking frame (15).
4. The bag feeding mechanism for woven bag printing according to claim 1, characterized in that, Both sides of the guide plate (19) are provided with limit stops (20) facing upwards, and each limit stop (20) is connected to the outside of the printing conveyor (18).
5. The bag feeding mechanism for woven bag printing according to claim 1, characterized in that, The upper edge of the guide plate (19) contacts the outer wall of the negative pressure roller (2) at the arc-shaped baffle plate (10), and the lower edge of the guide plate (19) extends to the surface of the conveyor belt of the printing conveyor (18).
6. The bag feeding mechanism for woven bag printing according to claim 1, characterized in that, The conveyor belt of the feeding conveyor (13) is provided with multiple limiting bars (14) arranged along its length direction on the outer side.