Belt pressing mechanism

Abstract

The utility model relates to the field of paper bag production process improvement, and discloses a belt pressing mechanism which comprises a sliding table, one side of the sliding table is rotationally connected with a two-way lead screw, the outer wall of the two-way lead screw is in threaded connection with a first sliding block, one side of the first sliding block is fixedly connected with a first connecting plate, and the other side of the first connecting plate is fixedly connected with a second connecting plate. The inner wall of the first connecting plate is rotationally connected with a shaft, the outer wall of the shaft is rotationally connected with a first belt plate, one side of the first connecting plate is rotationally connected with the first belt plate, one side of the first belt plate is evenly and rotationally connected with second roller shafts, and one side of the first sliding block is rotationally connected with a first air cylinder. According to the valve bag edge pressing device, the first belt plate is pushed through the first air cylinder, the upper folded edge of a valve bag is pressed, the second belt plate is pushed through the second air cylinder, the lower folded edge of the valve bag is pressed, the first roller shaft is driven through the shaft, the first roller shaft drives the first belt and the second belt to rotate, and edge pressing of the valve bag is completed; and the risk that the valve bag is scrapped during production is reduced.

Description

Technical Field

[0001] The utility model relates to the field of improvement of paper bag production technology, in particular to a belt pressing mechanism. Background Art

[0002] A valve bag is an internationally popular packaging bag, which is characterized by feeding through a valve opening at the top or bottom and using special filling equipment for filling. According to the opening method, valve bags can be divided into three types: upper opening, lower opening, and upper and lower openings.

[0003] In the existing valve bag production process, before pasting the bottom paper of the valve bag during production, the bottom of the valve bag needs to be folded by a forming mechanism and then the folded paper is flattened by a roller to ensure that the bottom sticker of the valve bag does not curl.

[0004] However, after the bottom of the valve bag is turned and folded, when flattening the folded paper bag edge, a single roller is usually used for flattening, which is likely to cause uneven flattening or turning of the folded edge, resulting in quality problems during the production of valve bags. Summary of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a belt pressing mechanism, aiming to improve the problems of folded edge turning or uneven flattening during the production of valve bags.

[0006] To achieve the above object, the utility model provides the following technical solution: A belt pressing mechanism includes a sliding table, on one side of which a bidirectional lead screw is rotatably connected. The outer wall of the bidirectional lead screw is threadedly connected with a first slider. One side of the first slider is fixedly connected with a first connecting plate. The inner wall of the first connecting plate is rotatably connected with a shaft. The outer wall of the shaft is rotatably connected with a first belt plate. One side of the first connecting plate is rotatably connected with a first belt plate. One side of the first belt plate is rotatably connected with a first roller shaft. The outer wall of the first roller shaft is connected with a first belt. One side of the first belt plate is evenly rotatably connected with second roller shafts. The outer walls of the second roller shafts are connected to the inner side of the first belt. One side of the first slider is rotatably connected with a first cylinder. The outer wall of the bidirectional lead screw is threadedly connected with a second slider. One side of the second slider is fixedly connected with a second connecting plate. One side of the second connecting plate is rotatably connected with a shaft. The outer wall of the shaft is rotatably connected with a second belt plate. One side of the second connecting plate is rotatably connected with a second belt plate. One side of the second belt plate is rotatably connected with a first roller shaft. The outer wall of the first roller shaft is connected with a second belt. One side of the second belt plate is evenly rotatably connected to the middle side of the second roller shafts. The outer walls of the second roller shafts are connected to the inner wall of the second belt. One side of the second slider is rotatably connected with a second cylinder.

[0007] Preferably, one end of the sliding table is fixedly connected with a reduction motor, the output end of the reduction motor is on one side of the bidirectional lead screw, and the threads of the bidirectional lead screw are in opposite directions.

[0008] Preferably, the thread of the first slider matches the thread of the bidirectional lead screw, and the thread of the second slider matches the bidirectional lead screw.

[0009] Preferably, the shape of the first belt plate is narrow at one end and wide at the other end, and one side of the first roller shaft is rotatably connected to one side of the wide end of the first belt plate.

[0010] Preferably, the shaft passes through the first roller shaft and is fixedly connected to the inner wall of the first roller shaft.

[0011] Preferably, the output end of the first cylinder is rotatably connected to one side of the first belt plate, and the output end of the second cylinder is rotatably connected to one side of the second belt plate.

[0012] Preferably, the first belt plate is located between the first connecting plate and the second connecting plate, and the second belt plate is located between the first connecting plate and the second connecting plate.

[0013] Preferably, the shaft passes through the first connecting plate and is rotatably connected to the inner wall of the first connecting plate, the shaft passes through the second connecting plate and is rotatably connected to the inner wall of the second connecting plate, the shaft passes through the first belt plate and is rotatably connected to the inner wall of the first belt plate, and the shaft passes through the second belt plate and is rotatably connected to the inner wall of the second belt plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the first cylinder is used to push the first belt plate to press the upper folded edge of the valve pocket, the second cylinder is used to push the second belt plate to press the lower folded edge of the valve pocket, the first roller shaft is driven by the shaft, and the first roller shaft drives the first belt and the second belt to rotate, so as to complete the edge pressing of the upper folded edge and the lower folded edge of the valve pocket. The contact area of the edge pressing of the belt is large, and the edge pressing time is longer than that of the roller.

[0016] 2. In the utility model, the edge pressing of the upper folded edge and the lower folded edge of the valve pocket by the belt can reduce the situations of folded edge turning and uneven folded edge, and reduce the risk of scrapping during the production of the valve pocket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective side view structure diagram of a belt pressing mechanism proposed by the utility model;

[0018] Figure 2 is a structural schematic diagram of the shaft of a belt pressing mechanism proposed by the utility model;

[0019] Figure 3Schematic diagram of the first belt plate structure of a belt pressing mechanism proposed by the present utility model.

[0020] Legend:

[0021] 1. Shaft; 2. First connecting plate; 3. First cylinder; 4. Slide table; 5. Second cylinder; 6. Reduction motor; 7. First belt plate; 8. First belt; 9. Second belt; 10. Second belt plate; 11. First roller shaft; 12. Second roller shaft; 13. Second connecting plate; 14. First slider; 15. Second slider; 16. Bidirectional lead screw. Specific implementation manners

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the specification drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Refer to Figures 1 - 3, An embodiment provided by the present utility model: A belt pressing mechanism includes a sliding table 4. One side of the sliding table 4 is rotatably connected to a bidirectional lead screw 16. The outer wall of the bidirectional lead screw 16 is threadedly connected to a first slider 14. One side of the first slider 14 is fixedly connected to a first connecting plate 2. The inner wall of the first connecting plate 2 is rotatably connected to a shaft 1. The outer wall of the shaft 1 is rotatably connected to a first belt plate 7. One side of the first connecting plate 2 is rotatably connected to the first belt plate 7. One side of the first belt plate 7 is rotatably connected to a first roller shaft 11. The outer wall of the first roller shaft 11 is connected to a first belt 8. One side of the first belt plate 7 is evenly rotatably connected to second roller shafts 12. The outer walls of the second roller shafts 12 are connected to the inner side of the first belt 8. One side of the first slider 14 is rotatably connected to a first cylinder 3. The outer wall of the bidirectional lead screw 16 is threadedly connected to a second slider 15. One side of the second slider 15 is fixedly connected to a second connecting plate 13. One side of the second connecting plate 13 is rotatably connected to a shaft 1. The outer wall of the shaft 1 is rotatably connected to a second belt plate 10. One side of the second connecting plate 13 is rotatably connected to the second belt plate 10. One side of the second belt plate 10 is rotatably connected to a first roller shaft 11. The outer wall of the first roller shaft 11 is connected to a second belt 9. One side of the second belt plate 10 is evenly rotatably connected to the middle side of one side of the second roller shafts 12. The outer walls of the second roller shafts 12 are connected to the inner wall of the second belt 9. One side of the second slider 15 is rotatably connected to a second cylinder 5. One end of the sliding table 4 is fixedly connected to a reduction motor 6. The output end of the reduction motor 6 is on one side of the bidirectional lead screw 16. The threads of the bidirectional lead screw 16 are in opposite directions. The thread of the first slider 14 matches the thread of the bidirectional lead screw 16. The thread of the second slider 15 matches the bidirectional lead screw 16. By operating the reduction motor 6, the bidirectional lead screw 16 can be rotated to make the first slider 14 and the second slider 15 approach or move away from each other. By driving the first connecting plate 2 and the second connecting plate 13, the first belt plate 7 and the second belt plate 10 are driven to adjust the first belt plate 7 and the second belt plate 10 to the corresponding positions of the upper hem and the lower hem of the valve bag.

[0024] The sliding table 4 and the shaft 1 are connected to the paper bag production equipment, which is not the focus of this application, so it will not be elaborated too much.

[0025] The shape of the first belt plate 7 is narrow at one end and wide at the other end. One side of the first roller shaft 11 is rotatably connected to one side of the wide end of the first belt plate 7. The shaft 1 passes through the first roller shaft 11 and is fixedly connected to the inner wall of the first roller shaft 11. The rotation of the shaft 1 can drive the first roller shaft 11. The rotation of the first roller shaft 11 drives the first belt 8 and the second belt 9, and at the same time drives the second roller shaft 12, which can perform hemming treatment on the upper and lower hems of the valve bag. The output end of the first cylinder 3 is rotatably connected to one side of the first belt plate 7, and the output end of the second cylinder 5 is rotatably connected to one side of the second belt plate 10. The first cylinder 3 can drive the first belt plate 7 to press against or away from the upper hem of the valve bag, and the second cylinder 5 can drive the second belt plate 10 to press against or away from the lower hem of the valve bag. The first belt plate 7 is located between the first connecting plate 2 and the second connecting plate 13, and the second belt plate 10 is located between the first connecting plate 2 and the second connecting plate 13. The shaft 1 passes through the first connecting plate 2 and is rotatably connected to the inner wall of the first connecting plate 2. The shaft 1 passes through the second connecting plate 13 and is rotatably connected to the inner wall of the second connecting plate 13. The shaft 1 passes through the first belt plate 7 and is rotatably connected to the inner wall of the first roller shaft 11. The shaft 1 passes through the second belt plate 10 and is rotatably connected to the inner wall of the first roller shaft 11.

[0026] Working principle: The operation of the reduction motor 6 drives the rotation of the bidirectional lead screw 16. The first slider 14 is slid on the slide table 4 to the position of the upper hem of the paper bag that needs to be pressed, and the second slider 15 is slid on the slide table 4 to the position of the lower hem of the paper bag that needs to be pressed. The first cylinder 3 pushes the first belt plate 7 to press the upper hem of the paper bag, and the second cylinder 5 pushes the second belt plate to press the lower hem of the paper bag. The shaft 1 drives the first roller shaft 11, and the first roller shaft 11 drives the second roller shaft 12 to rotate simultaneously through the first belt 8 and the second belt 9, pressing the upper and lower hems of the paper bag. When it is necessary to change the specifications, the operation of the reduction motor 6 can drive the rotation of the bidirectional lead screw 16 to adjust the first slider 14 and the second slider 15 to approach or move away from each other on one side of the slide table 4 to adjust the distance between the first belt 8 and the second belt 9. When there is a problem of paper bag jamming during paper bag pressing, the first cylinder 3 can pull the first belt plate 7 to lift the first belt 8, and the second cylinder 5 can pull the second belt plate 10 to lift the second belt 9 to handle the paper bag jamming problem in time.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A belt pressing mechanism, comprising a sliding table (4), characterized in that: One side of the sliding table (4) is rotatably connected to a bidirectional lead screw (16). The outer wall of the bidirectional lead screw (16) is threadedly connected to a first slider (14). One side of the first slider (14) is fixedly connected to a first connecting plate (2). The inner wall of the first connecting plate (2) is rotatably connected to a shaft (1). The outer wall of the shaft (1) is rotatably connected to a first belt plate (7). One side of the first connecting plate (2) is rotatably connected to the first belt plate (7). One side of the first belt plate (7) is rotatably connected to a first roller shaft (11). The outer wall of the first roller shaft (11) is connected to a first belt (8). One side of the first belt plate (7) is evenly rotatably connected to second roller shafts (12). The outer walls of the second roller shafts (12) are connected to the inner side of the first belt (8). One side of the first slider (14) is rotatably connected to a first cylinder (3). The outer wall of the bidirectional lead screw (16) is threadedly connected to a second slider (15). One side of the second slider (15) is fixedly connected to a second connecting plate (13). One side of the second connecting plate (13) is rotatably connected to a shaft (1). The outer wall of the shaft (1) is rotatably connected to a second belt plate (10). One side of the second connecting plate (13) is rotatably connected to the second belt plate (10). One side of the second belt plate (10) is rotatably connected to a first roller shaft (11). The outer wall of the first roller shaft (11) is connected to a second belt (9). One side of the second belt plate (10) is evenly rotatably connected to the middle side of one side of the second roller shafts (12). The outer walls of the second roller shafts (12) are connected to the inner wall of the second belt (9). One side of the second slider (15) is rotatably connected to a second cylinder (5).

2. The belt pressing mechanism according to claim 1, characterized in that: One end of the sliding table (4) is fixedly connected to a reduction motor (6). The output end of the reduction motor (6) is fixedly connected to one end of the bidirectional lead screw (16). The thread directions at both ends of the bidirectional lead screw (16) are opposite.

3. The belt pressing mechanism according to claim 2, characterized in that: The thread of the first slider (14) matches the thread of the bidirectional lead screw (16), and the thread of the second slider (15) matches the bidirectional lead screw (16).

4. A belt pressing mechanism according to claim 1, characterized in that: The shape of the first belt plate (7) is narrow at one end and wide at the other end. One side of the first roller shaft (11) is rotatably connected to the wide end side of the first belt plate (7).

5. The belt pressing mechanism according to claim 1, wherein: The shaft (1) passes through the first roller shaft (11) and is fixedly connected to the inner wall of the first roller shaft (11).

6. A belt pressing mechanism according to claim 1, characterized in that: The output end of the first cylinder (3) is rotatably connected to one side of the first belt plate (7), and the output end of the second cylinder (5) is rotatably connected to one side of the second belt plate (10).

7. A belt pressing mechanism according to claim 1, characterized in that: The first belt plate (7) is located between the first connecting plate (2) and the second connecting plate (13), and the second belt plate (10) is located between the first connecting plate (2) and the second connecting plate (13).

8. A belt pressing mechanism according to claim 1, characterized in that: The shaft (1) penetrates through the first connecting plate (2) and is rotatably connected to the inner wall of the first connecting plate (2). The shaft (1) penetrates through the second connecting plate (13) and is rotatably connected to the inner wall of the second connecting plate (13). The shaft (1) penetrates through the first belt plate (7) and is rotatably connected to the inner wall of the first belt plate (7). The shaft (1) penetrates through the second belt plate (10) and is rotatably connected to the inner wall of the second belt plate (10).

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