A garbage bag production unwinding device

Abstract

This utility model relates to the technical field of unwinding devices, specifically disclosing an unwinding device for garbage bag production, including a frame, a material roller, a braking mechanism, a roller conveying mechanism, and a guide roller mechanism. The material roller is detachably connected to one end of the frame, and the braking mechanism is connected to the frame and the material roller. The roller conveying mechanism includes a driving roller and a driven roller, with both ends of the driving roller and the driven roller connected to the frame, and a driving component driving the driving roller. The guide roller mechanism includes several guide rollers for guiding the unwinding, and the several guide rollers are rotatably connected to the frame. It also includes a flexible roller shutter, which is connected to the end of the frame away from the material roller. Compared with the prior art, this utility model has a simple structure and saves costs. It achieves automatic drooping or rolling up of the flexible roller shutter by the tension of the garbage bag, thereby achieving flexible tensioning or loosening of the garbage bag without manual intervention, making it more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of unwinding device technology, and in particular to an unwinding device for garbage bag production. Background Technology

[0002] Roll-type garbage bags are a common type of garbage bag, usually sold in rolls for easy and continuous use, suitable for homes, commercial spaces, and other settings. These garbage bags typically feature a flat or drawstring design, and come in various sizes and thicknesses, allowing users to choose according to the size of their garbage can and weight requirements.

[0003] The production of roll-shaped garbage bags is an automated process, specifically including raw material preparation → blown film forming → printing (optional) → bag making and edge trimming → slitting and processing → packaging and warehousing. The unwinding device is a crucial component of the garbage bag production process, its main function being to rewind the film rolls collected in the blown film forming process for subsequent processing. The tensioning mechanism is another important part of the unwinding device, its function being to ensure that the garbage bags maintain a uniform tension during transport, preventing the film material from becoming too tight or too loose. Currently, commonly used tensioning mechanisms in unwinding devices have complex structures, high operating and maintenance costs, and require a series of mechanical actions to ultimately achieve the tensioning or loosening of the garbage bags, making them relatively inconvenient to use. Utility Model Content

[0004] The purpose of this utility model is to provide a garbage bag production unwinding device with a simple structure and cost-saving design. It achieves automatic drooping or rolling up of the flexible roller shutter by the tension of the garbage bag, thereby realizing the flexible tensioning or relaxation of the garbage bag without manual intervention and making it more convenient to use, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A garbage bag production unwinding device includes a frame, a material roller, a braking mechanism, a roller conveying mechanism, and a guide roller mechanism. The material roller is detachably connected to one end of the frame, and the braking mechanism is connected to the frame and the material roller. The roller conveying mechanism includes a driving roller and a driven roller, the two ends of which are connected to the frame, and a driving component is driven to the driving roller. The guide roller mechanism includes several guide rollers for guiding the unwinding, and the guide rollers are rotatably connected to the frame. It also includes a flexible roller shutter connected to the end of the frame away from the material roller.

[0006] A further improvement of this utility model is that a support plate is connected to the top of one end of the frame, a U-shaped groove is provided on the rear side of the support plate, the material roller is in the shape of a stepped shaft, and ball bearings are connected to both ends of the material roller, with the ball bearings being engaged in the U-shaped groove; a locking bolt is connected to the top of the support plate, and the locking bolt abuts against the outer ring of the ball bearing.

[0007] A further improvement of this utility model is that the braking mechanism includes a magnetic powder brake, which is connected to the frame. The power output end of the magnetic powder brake is connected to a large gear, and one end of the roller shaft is connected to a small gear that meshes with the large gear.

[0008] A further improvement of this utility model is that the roller conveying mechanism includes symmetrically arranged slides, a fixed bearing seat connected to the bottom end of the slides, both ends of the driving roller being rotatably connected to the fixed bearing seat through bearings, a movable bearing seat being slidably fitted to the slides, and both ends of the driven roller being rotatably connected to the movable bearing seat through bearings.

[0009] A further improvement of this utility model is that a cylinder is vertically connected to the frame, the power output end of the cylinder is connected to a base, the movable bearing seat is connected to the base by a spring, and the cylinder drives the active roller to approach or move away from the driven roller; the driving component is a geared motor, the power output shaft of the geared motor is connected to an active pulley, the active roller is connected to a driven pulley, and a belt is connected between the active pulley and the driven pulley.

[0010] A further improvement of this utility model is that the guide roller mechanism includes a first guide roller, a second guide roller, a third guide roller, a fourth guide roller, and a fifth guide roller. The first guide roller is connected to the frame between the material roller and the roller conveying mechanism, and the second guide roller, the third guide roller, the fourth guide roller, and the fifth guide roller are sequentially connected to the frame at the discharge end of the roller conveying mechanism.

[0011] A further improvement of this utility model is that a clamp is connected to the frame between the second guide roller and the third guide roller, the top end of the flexible roller blind is connected to the clamp by screws, and the bottom end of the flexible roller blind hangs down naturally. The flexible roller blind is a straw curtain or a bamboo curtain.

[0012] A further improvement of this utility model is that an adjustment mechanism is connected to the frame, and the fourth guide roller is connected to the adjustment mechanism.

[0013] A further improvement of this utility model is that the adjustment mechanism includes a drive shaft, which is rotatably connected to the frame laterally. Two drive bevel gears are connected to the drive shaft, and two lead screws are rotatably connected to the frame vertically. A driven bevel gear is connected to the top of the lead screw, and the two drive bevel gears mesh with the two driven bevel gears respectively. The roller shaft of the fourth guide roller is rotatably connected to a nut block, and the two nut blocks are threadedly engaged with the two lead screws respectively.

[0014] A further improvement of this utility model is that a handwheel is connected to one end of the drive shaft.

[0015] The beneficial effects of this utility model are: First, the unwinding device for producing garbage bags of this utility model has a simple structure and saves costs. It realizes the automatic drooping or rolling up of the flexible roller curtain by the tension of the garbage bag. In addition, the original servo reduction motor controls the speed of unwinding, thereby realizing the tensioning or loosening of the garbage bag. No manual intervention is required, making it more convenient to use.

[0016] Secondly, the unwinding device for producing garbage bags of this utility model can prevent the material roller from rotating continuously due to inertia by setting a magnetic powder brake, thus preventing the entire roll of material from becoming loose.

[0017] Third, the unwinding device for producing garbage bags of this utility model has an adjustment mechanism that can adjust the position of the fourth guide roller according to the thickness of the garbage bag, which facilitates the adjustment of the angle of the garbage bag and thus helps to distribute the tension reasonably. Attached Figure Description

[0018] Figure 1 This is a front view of the entire utility model.

[0019] Figure 2 This is a schematic diagram of the material roller installation of this utility model.

[0020] Figure 3 This is a schematic diagram of the adjustment mechanism of this utility model.

[0021] Figure 4 This is a schematic diagram of the roller conveying mechanism of this utility model.

[0022] Figure 5 This is a path diagram of the garbage bag in the working state of this utility model.

[0023] In the diagram: 1-Frame, 101-Support plate, 102-Locking bolt, 2-Material roller, 201-Ball bearing, 3-Brake mechanism, 301-Magnetic powder brake, 302-Large gear, 303-Small gear, 4-Roller conveying mechanism, 401-Drive roller, 402-Driven roller, 403-Slide, 404-Fixed bearing seat, 405-Moving bearing seat, 406-Cylinder, 407-Base, 408-Spring, 40 9-Geared motor, 410-Belt, 5-Guide roller mechanism, 501-First guide roller, 502-Second guide roller, 503-Third guide roller, 504-Fourth guide roller, 505-Fifth guide roller, 6-Flexible roller shutter, 601-Clamping seat, 7-Adjusting mechanism, 701-Drive shaft, 702-Drive bevel gear, 703-Screw, 704-Driven bevel gear, 705-Nut block, 706-Handwheel, 8-Garbage bag roll. Detailed Implementation

[0024] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1: As Figures 1-5As shown, a garbage bag production unwinding device includes a frame 1, a material roller 2, a braking mechanism 3, a roller conveying mechanism 4, and a guide roller mechanism 5. The material roller 2 is detachably connected to one end of the frame 1, and the braking mechanism 3 is connected to the frame 1 and the material roller 2. The roller conveying mechanism 4 includes a driving roller 401 and a driven roller 402, the two ends of which are connected to the frame 1, and a driving component is driven to the driving roller 401. The guide roller mechanism 5 includes several guide rollers for guiding the unwinding, and the several guide rollers are rotatably connected to the frame 1. It also includes a flexible roller shutter 6, which is connected to the end of the frame 1 away from the material roller 2.

[0026] A support plate 101 is connected to the top of one end of the frame 1. A U-shaped groove is provided on the rear side of the support plate 101. The material roller 2 is in the shape of a stepped shaft. Ball bearings 201 are connected to both ends of the material roller 2. The ball bearings 201 are engaged in the U-shaped groove. A locking bolt 102 is connected to the top of the support plate 101. The locking bolt 102 abuts against the outer ring of the ball bearing 201.

[0027] The braking mechanism 3 includes a magnetic powder brake 301, which is connected to the frame 1. The power output end of the magnetic powder brake 301 is connected to a large gear 302, and one end of the roller shaft is connected to a small gear 303 that meshes with the large gear 302.

[0028] The roller conveying mechanism 4 includes symmetrically arranged slide seats 403, a fixed bearing seat 404 connected to the bottom end of the slide seat 403, the two ends of the driving roller 401 rotatably connected to the fixed bearing seat 404 through bearings, the movable bearing seat 405 slidingly engaged with the slide seat 403, and the two ends of the driven roller 402 rotatably connected to the movable bearing seat 405 through bearings.

[0029] A cylinder 406 is vertically connected to the frame 1. The power output end of the cylinder 406 is connected to the base 407. The movable bearing seat 405 is connected to the base 407 through a spring 408. The cylinder 406 drives the drive roller 401 to approach or move away from the driven roller 402. The driving component is a geared motor 409. The power output shaft of the geared motor 409 is connected to the drive pulley. The drive roller 401 is connected to the driven pulley. A belt 410 is connected between the drive pulley and the driven pulley.

[0030] The guide roller mechanism 5 includes a first guide roller 501, a second guide roller 502, a third guide roller 503, a fourth guide roller 504, and a fifth guide roller 505. The first guide roller 501 is connected to the frame 1 between the material roller 2 and the roller conveying mechanism 4. The second guide roller 502, the third guide roller 503, the fourth guide roller 504, and the fifth guide roller 505 are sequentially connected to the frame 1 at the discharge end of the roller conveying mechanism 4.

[0031] A clamp 601 is connected to the frame 1 between the second guide roller 502 and the third guide roller 503. The top end of the flexible roller blind 6 is connected to the clamp 601 by screws, and the bottom end of the flexible roller blind 6 hangs down naturally. The flexible roller blind 6 is a bamboo blind.

[0032] Example 2: This example is a further improvement on Example 1. The main improvement is that in Example 1, the transport vehicle was inconvenient to push; while in this example, the above-mentioned defects can be avoided. Specifically: An adjustment mechanism 7 is connected to the frame 1, and a fourth guide roller 504 is connected to the adjustment mechanism 7. The adjustment mechanism 7 includes a drive shaft 701, which is rotatably connected to the frame 1. Two drive bevel gears 702 are connected to the drive shaft 701, and two lead screws 703 are rotatably connected to the frame 1. A driven bevel gear 704 is connected to the top of each lead screw 703, and the two drive bevel gears 702 mesh with the two driven bevel gears 704 respectively. The roller shaft of the fourth guide roller 504 is rotatably connected to a nut block 705, and the two nut blocks 705 are threadedly engaged with the two lead screws 703 respectively. A handwheel 706 is connected to one end of the drive shaft 701. In this embodiment, the adjustment mechanism 7 can adjust the position of the fourth guide roller 504 up and down according to the thickness of the garbage bag, which facilitates the adjustment of the angle of the garbage bag and thus helps to reasonably distribute the tension.

[0033] Apart from the above, this embodiment is exactly the same as Embodiment 1, and will not be described again here.

[0034] The specific working principle of this utility model is as follows: During operation, the operator removes the material roller 2 containing the garbage bag roll 8 from the blown film machine and places it in the U-shaped groove of the support plate 101, and tightens the locking bolt 102. The operator then pulls one end of the garbage bag roll 8 through the bottom of the first guide roller 501, through the space between the drive roller 401 and the driven roller 402, through the top of the second guide roller 502, through the bottom of the flexible roller curtain 6, through the top of the third guide roller 503, through the bottom of the fourth guide roller 504, and through the top of the fifth guide roller 505 before flowing out to the subsequent device. When unwinding, cylinder 406 extends, and drive roller 401 and driven roller 402 clamp the garbage bag. Gear motor 409 drives drive roller 401 to work, and the garbage bag is pulled out. Flexible roller shutter 6 automatically droops or rolls up by the pulling force of the garbage bag. In addition, gear motor 409 controls the speed of unwinding, thereby tightening or loosening the garbage bag. No manual intervention is required, making it convenient to use. If the height of the fourth guide roller 504 needs to be adjusted, simply turn handwheel 706, and the screw 703 will rotate through the bevel gear structure, thereby moving the fourth guide roller 504 up and down.

[0035] It is worth noting that the flexible roller blind 6 needs to be polished with fine sandpaper before installation to prevent burrs from puncturing the garbage bag and affecting product quality. Furthermore, the tensioning mechanism of the flexible roller blind 6 is only suitable for thicker rolls and is not suitable for unwinding and tensioning films such as matte film, tactile film, and optical protective film.

[0036] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A device for unwinding garbage bags, characterized in that: The system includes a frame (1), a material roller (2), a braking mechanism (3), a roller feeding mechanism (4), and a guide roller mechanism (5). The material roller (2) is detachably connected to one end of the frame (1), and the braking mechanism (3) is connected to the frame (1) and the material roller (2). The roller feeding mechanism (4) includes a drive roller (401) and a driven roller (402). The two ends of the drive roller (401) and the driven roller (402) are connected to the frame (1), and the driving component is driven and connected to the drive roller (401). The guide roller mechanism (5) includes several guide rollers for guiding unwinding, and the several guide rollers are rotatably connected to the frame (1). The system also includes a flexible roller shutter (6), which is connected to one end of the frame (1) away from the material roller (2).

2. The unwinding device for producing garbage bags as described in claim 1, characterized in that: The frame (1) is connected to a support plate (101) at one end. The support plate (101) has a U-shaped groove on its rear side. The material roller (2) is in the shape of a stepped shaft. The two ends of the material roller (2) are connected to ball bearings (201), which are engaged in the U-shaped groove. The top of the support plate (101) is connected to a locking bolt (102), which abuts against the outer ring of the ball bearing (201).

3. The unwinding device for garbage bag production as described in claim 1 or 2, characterized in that: The braking mechanism (3) includes a magnetic powder brake (301), which is connected to the frame (1). The power output end of the magnetic powder brake (301) is connected to a large gear (302), and one end of the roller shaft is connected to a small gear (303) that meshes with the large gear (302).

4. The unwinding device for garbage bag production as described in claim 1, characterized in that: The roller conveying mechanism (4) includes symmetrically arranged slides (403), a fixed bearing seat (404) connected to the bottom end of the slide (403), the two ends of the driving roller (401) being rotatably connected to the fixed bearing seat (404) through bearings, the movable bearing seat (405) being slidably fitted to the slide (403), and the two ends of the driven roller (402) being rotatably connected to the movable bearing seat (405) through bearings.

5. The unwinding device for producing garbage bags as described in claim 4, characterized in that: A cylinder (406) is vertically connected to the frame (1). The power output end of the cylinder (406) is connected to a base (407). A movable bearing seat (405) is connected to the base (407) via a spring (408). The cylinder (406) drives the active roller (401) to approach or move away from the driven roller (402). The driving component is a geared motor (409). An active pulley is connected to the power output shaft of the geared motor (409). A driven pulley is connected to the active roller (401). A belt (410) is connected between the active pulley and the driven pulley.

6. The unwinding device for producing garbage bags as described in claim 1, characterized in that: The guide roller mechanism (5) includes a first guide roller (501), a second guide roller (502), a third guide roller (503), a fourth guide roller (504), and a fifth guide roller (505). The first guide roller (501) is connected to the frame (1) between the material roller (2) and the roller conveying mechanism (4). The second guide roller (502), the third guide roller (503), the fourth guide roller (504), and the fifth guide roller (505) are sequentially connected to the frame (1) at the discharge end of the roller conveying mechanism (4).

7. The unwinding device for producing garbage bags as described in claim 6, characterized in that: A clamp (601) is connected to the frame (1) between the second guide roller (502) and the third guide roller (503). The top of the flexible roller blind (6) is connected to the clamp (601) by screws, and the bottom of the flexible roller blind (6) hangs down naturally. The flexible roller blind (6) is a straw curtain or a bamboo curtain.

8. The unwinding device for producing garbage bags as described in claim 6, characterized in that: An adjustment mechanism (7) is connected to the frame (1), and a fourth guide roller (504) is connected to the adjustment mechanism (7).

9. The unwinding device for producing garbage bags as described in claim 8, characterized in that: The adjustment mechanism (7) includes a drive shaft (701), which is rotatably connected to the frame (1) in the horizontal direction. Two drive bevel gears (702) are connected to the drive shaft (701), and two lead screws (703) are rotatably connected to the frame (1) in the vertical direction. A driven bevel gear (704) is connected to the top of the lead screw (703), and the two drive bevel gears (702) mesh with the two driven bevel gears (704) respectively. The roller shaft of the fourth guide roller (504) is rotatably connected to the nut block (705), and the two nut blocks (705) are threadedly connected to the two lead screws (703) respectively.

10. The unwinding device for producing garbage bags as described in claim 9, characterized in that: A handwheel (706) is connected to one end of the drive shaft (701).

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