Cutting mechanism for packaging bag

Abstract

The utility model discloses a cutting mechanism for packaging bags, which belongs to the technical field of packaging bag processing and comprises a mounting seat, a first support rod is mounted on one side of the top of the mounting seat, and a bearing plate is mounted at the top of the first support rod. A first U-shaped plate is connected with a mounting plate through a first hydraulic cylinder, and a first roller assembly is arranged in a mounting groove, so that the first hydraulic cylinder can drive a conveying roller to move downwards to clamp a packaging bag combined film piece body close to a cutting position; meanwhile, a movable mechanism for pressing the packaging bag combined film piece main body is arranged on the mounting plate, so that the tightness of the packaging bag combined film piece main body can be ensured when the packaging bag combined film piece main body is conveyed to a cutting position, and the pressing force on the packaging bag combined film piece main body is always kept; and therefore, the final cutting precision is prevented from being affected by wrinkles and distortion of the packaging bag combined film part main body in the conveying process.

Description

Technical Field

[0001] This utility model belongs to the field of packaging bag processing technology, specifically a packaging bag cutting mechanism. Background Technology

[0002] Packaging bags are very common in modern daily life. They are widely used for storing and carrying items and packaging products in factories. During the processing of packaging bags, they are often connected in multiple sets after production. Therefore, packaging bag cutting mechanisms are needed to cut the individual packaging bags apart.

[0003] Existing packaging bag cutting mechanisms typically use a combination of a winding mechanism and a conveying mechanism to transport connected packaging bags to the cutting blade for cutting. However, in actual operation, due to the softness of the packaging bags, they are prone to wrinkling and twisting in the long conveyor line, which can cause the cutting position to deviate from the expected position, resulting in insufficient final product yield. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a packaging bag cutting mechanism, which solves the problem that existing packaging bag cutting mechanisms are prone to wrinkling and twisting when transported to the cutting position, affecting the final cutting accuracy.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cutting mechanism for a packaging bag, including a mounting base, a first support rod mounted on one side of the top of the mounting base, and a bearing plate mounted on the top of the first support rod, a winding roller assembly mounted on the side of the top of the mounting base away from the first support rod, a packaging bag assembly film body disposed on the outer side of the winding roller assembly, and the packaging bag assembly film body extending to the top of the bearing plate;

[0006] A second support rod is installed at each of the four corners of the top of the mounting base. A mounting plate is installed at the top of the second support rod. A mounting groove is opened on the side of the top of the bearing plate near the mounting base, and a first roller assembly passes through both ends of the mounting groove. An adjustment mechanism for clamping the main body of the packaging bag assembly film is provided on the mounting plate.

[0007] The mounting plate is equipped with an active mechanism for pressing the main body of the packaging bag assembly film.

[0008] A second hydraulic cylinder is installed on the bottom side of the mounting plate near the support plate, and the output end of the second hydraulic cylinder is connected to a cutting tool assembly.

[0009] As a further embodiment of this utility model: the cross-sectional shape of the bearing plate is "U" shaped, and the bearing plate and the first support rod are manufactured as a single unit.

[0010] As a further embodiment of this utility model: the adjustment mechanism includes a first hydraulic cylinder, which is installed at the middle position of the bottom of the mounting plate. The output end of the first hydraulic cylinder is connected to a first U-shaped plate. A servo motor is installed at one end of the first U-shaped plate. The output end of the servo motor is connected to a conveying roller, and the conveying roller passes through the first U-shaped plate.

[0011] As a further embodiment of this utility model: the movable mechanism includes a guide member, which passes through the bottom of the second U-shaped plate on the side near the take-up roller assembly. A counterweight is installed at the bottom of the guide member, and the second U-shaped plate is installed at the bottom of the counterweight. The inner sidewall of the second roller assembly is provided with the second roller assembly.

[0012] As a further embodiment of this utility model: the cross-sectional shape of the guide member is "T" shaped, and the guide member and the mounting plate are slidably connected.

[0013] As a further embodiment of this utility model: a movable part is hinged to the side of the cutting tool assembly away from the winding roller assembly, and a spring is connected between the movable part and the cutting tool assembly; a third roller assembly is provided on the inner side wall of the movable part.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The first U-shaped plate and the mounting plate are connected by a first hydraulic cylinder. The mounting groove is equipped with a first roller assembly, which allows the first hydraulic cylinder to drive the conveying roller to move down and clamp the main body of the packaging bag assembly film near the cutting position. At the same time, the mounting plate is equipped with an active mechanism to press the main body of the packaging bag assembly film, thereby ensuring the tightness of the main body of the packaging bag assembly film when it is conveyed to the cutting position, and maintaining the magnitude of the pressing force on the main body of the packaging bag assembly film at all times. This prevents the main body of the packaging bag assembly film from wrinkling or twisting during the conveying process, which would affect the final cutting accuracy.

[0016] 2. By providing a movable part on the cutting tool assembly, before the second hydraulic cylinder drives the cutting tool assembly to move downward to perform cutting, the third roller assembly on the movable part can further smooth and press the part of the packaging bag assembly film body that is about to be cut, thereby further ensuring that the entire conveying and processing end of the packaging bag assembly film body can remain flat during the cutting process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the front sectional view of the present invention;

[0020] Figure 4 This is a schematic diagram of the main structure of the bearing plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the main structure of the cutting tool assembly of this utility model.

[0022] In the diagram: 1. Mounting base; 2. First support rod; 3. Bearing plate; 4. Rewinding roller assembly; 5. Main body of packaging bag assembly film; 6. Mounting plate; 7. Second support rod; 8. Mounting groove; 9. First roller assembly; 10. First hydraulic cylinder; 11. First U-shaped plate; 12. Servo motor; 13. Conveyor roller; 14. Guide component; 15. Counterweight; 16. Second U-shaped plate; 17. Second roller assembly; 18. Second hydraulic cylinder; 19. Cutting tool assembly; 20. Moving part; 21. Spring; 22. Third roller assembly. Detailed Implementation

[0023] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0024] like Figures 1-5 As shown, this utility model provides a technical solution:

[0025] A packaging bag cutting mechanism includes a mounting base 1, a first support rod 2 mounted on one side of the top of the mounting base 1, and a bearing plate 3 mounted on the top of the first support rod 2. A take-up roller assembly 4 is mounted on the top side of the mounting base 1 away from the first support rod 2. A packaging bag assembly film body 5 is provided on the outer side of the take-up roller assembly 4, and the packaging bag assembly film body 5 extends to the top of the bearing plate 3. The take-up roller assembly 4 is controlled by a controller. When the take-up roller assembly 4 rotates, it can release the packaging bag assembly film body 5, so that the packaging bag assembly film body 5 moves further towards the bearing plate 3.

[0026] The cross-sectional shape of the support plate 3 is "U" shaped, and the support plate 3 and the first support rod 2 are made as a single unit, so that the support plate 3 can provide auxiliary obstruction and restriction to the side wall of the main body 5 of the packaging bag assembly film.

[0027] Second support rods 7 are installed at the four corners of the top of the mounting base 1. A mounting plate 6 is installed at the top of each second support rod 7. A mounting groove 8 is formed on the top of the bearing plate 3 near the mounting base 1, and first roller assemblies 9 pass through both ends of the mounting groove 8. An adjustment mechanism for clamping the main body 5 of the packaging bag assembly film is provided on the mounting plate 6. The adjustment mechanism includes a first hydraulic cylinder 10, which is installed at the middle of the bottom of the mounting plate 6. The output end of the first hydraulic cylinder 10 is connected to a first U-shaped plate 11. A servo motor 12 is installed at one end of the first U-shaped plate 11, and a conveyor roller 13 is connected to the output end of the servo motor 12, passing through the first U-shaped plate 11. 1. After the operator controls the first hydraulic cylinder 10 to drive the conveyor roller 13 to descend to a certain extent, the conveyor roller 13 can cooperate with the first roller assembly 9 to fully clamp the main body 5 of the packaging bag combination film. Without the conveyor roller 13 rotating on its own, the main body 5 of the packaging bag combination film cannot be conveyed. When conveying the main body 5 of the packaging bag combination film, the take-up roller assembly 4 and the servo motor 12 can be turned on at the same time. At this time, the take-up roller assembly 4 releases the main body 5 of the packaging bag combination film, and the conveyor roller 13 drives the main body 5 of the packaging bag combination film to carry out the conveying action under the action of friction, thereby avoiding the packaging bag combination film body 5 from easily wrinkling or twisting during the conveying process.

[0028] The mounting plate 6 is provided with an active mechanism for pressing the main body 5 of the packaging bag assembly film. The active mechanism includes a guide 14, which passes through the bottom of the second U-shaped plate 16 near the take-up roller assembly 4. A counterweight 15 is installed at the bottom of the guide 14, and the second U-shaped plate 16 is installed at the bottom of the counterweight 15. The inner wall of the second roller assembly 17 is provided with the second roller assembly 17. The cross-sectional shape of the guide 14 is "T" shaped, and the guide 14 is slidably connected to the mounting plate 6. This allows the second roller assembly 17 to press the main body 5 of the packaging bag assembly film under the action of gravity, ensuring that it is in a taut state. At the same time, when the take-up roller assembly 4 releases part of the main body 5 of the packaging bag assembly film and moves downward, the second roller assembly 17 can still maintain a constant pressing force on the main body 5 of the packaging bag assembly film under the action of gravity.

[0029] A second hydraulic cylinder 18 is installed on the bottom side of the mounting plate 6 near the support plate 3. The output end of the second hydraulic cylinder 18 is connected to the cutting tool assembly 19, so that controlling the second hydraulic cylinder 18 to drive the cutting tool assembly 19 to move downward can complete the cutting task of the packaging bag assembly film body 5.

[0030] A movable part 20 is hinged to the side of the cutting tool assembly 19 away from the take-up roller assembly 4, and a spring 21 is connected between the movable part 20 and the cutting tool assembly 19. A third roller assembly 22 is provided on the inner side wall of the movable part 20. In the initial state, the lowest point of the third roller assembly 22 is lower than the lowest point of the cutting tool assembly 19, so that when the second hydraulic cylinder 18 drives the cutting tool assembly 19 to move down, the third roller assembly 22 can first contact the main body 5 of the packaging bag combination film. Then, as the cutting tool assembly 19 descends, the third roller assembly 22 can be squeezed and moved laterally, thereby smoothing and pressing the main body 5 of the packaging bag combination film. Then the cutting tool assembly 19 completes the cutting task of the main body 5 of the packaging bag combination film.

[0031] The working principle of this utility model is as follows: The device is powered by an external power source. It pulls the main body 5 of the packaging bag assembly film onto the support plate 3, and keeps the second roller assembly 17 in close contact with the main body 5 of the packaging bag assembly film, with the second roller assembly 17 having a certain downward space. The first hydraulic cylinder 10 is controlled to drive the conveying roller 13 to move downward until the conveying roller 13 and the first roller assembly 9 cooperate to fully clamp the main body 5 of the packaging bag assembly film. Then, the take-up roller assembly 4 and the servo motor 12 are simultaneously turned on to convey the main body 5 of the packaging bag assembly film. After conveying to the specified width, the take-up roller assembly 4 and the servo motor 12 stop. The second hydraulic cylinder 18 drives the cutting tool assembly 19 to move downward. The third roller assembly 22 first comes into contact with the main body 5 of the packaging bag assembly film. As the cutting tool assembly 19 continues to move downward, the third roller assembly 22 begins to move laterally, thereby smoothing and pressing the main body 5 of the packaging bag assembly film. The cutting tool assembly 19 then completes the cutting of the main body 5 of the packaging bag assembly film. The above process is continuously repeated to complete the continuous cutting task.

[0032] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A cutting mechanism for packaging bags, comprising a mounting base (1), characterized in that: A first support rod (2) is installed on one side of the top of the mounting base (1), and a bearing plate (3) is installed on the top of the first support rod (2). A take-up roller assembly (4) is installed on the side of the top of the mounting base (1) away from the first support rod (2). A packaging bag assembly film body (5) is provided on the outside of the take-up roller assembly (4), and the packaging bag assembly film body (5) extends to the top of the bearing plate (3). The mounting base (1) is equipped with a second support rod (7) at each of the four corners of the top. The top of the second support rod (7) is equipped with a mounting plate (6). The top of the bearing plate (3) is provided with a mounting groove (8) on the side near the mounting base (1). The two ends of the mounting groove (8) are connected by a first roller assembly (9). The mounting plate (6) is provided with an adjustment mechanism for clamping the main body (5) of the packaging bag assembly film. The mounting plate (6) is provided with an active mechanism for pressing the main body (5) of the packaging bag assembly film; A second hydraulic cylinder (18) is installed on the bottom side of the mounting plate (6) near the support plate (3), and the output end of the second hydraulic cylinder (18) is connected to a cutting tool assembly (19).

2. The packaging bag cutting mechanism according to claim 1, characterized in that, The cross-sectional shape of the bearing plate (3) is "U" shaped, and the bearing plate (3) and the first support rod (2) are manufactured as a single unit.

3. The packaging bag cutting mechanism according to claim 1, characterized in that, The adjustment mechanism includes a first hydraulic cylinder (10), which is installed at the middle position of the bottom of the mounting plate (6). The output end of the first hydraulic cylinder (10) is connected to a first U-shaped plate (11). A servo motor (12) is installed at one end of the first U-shaped plate (11). The output end of the servo motor (12) is connected to a conveying roller (13), and the conveying roller (13) passes through the first U-shaped plate (11).

4. The packaging bag cutting mechanism according to claim 1, characterized in that, The active mechanism includes a guide (14) that passes through the bottom of the second U-shaped plate (16) on one side near the take-up roller assembly (4). A counterweight (15) is installed at the bottom of the guide (14), and the second U-shaped plate (16) is installed at the bottom of the counterweight (15). The second roller assembly (17) is provided on the inner wall of the second roller assembly (17).

5. The packaging bag cutting mechanism according to claim 4, characterized in that, The guide member (14) has a "T" shaped cross section and is slidably connected to the mounting plate (6).

6. The packaging bag cutting mechanism according to claim 1, characterized in that, The cutting tool assembly (19) has a movable part (20) hinged to the side away from the winding roller assembly (4), and a spring (21) is connected between the movable part (20) and the cutting tool assembly (19). A third roller assembly (22) is provided on the inner side wall of the movable part (20).

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