A feeding device of a garbage bag blowing film machine
Patent Information
- Application Number
- CN202522597569.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-08
AI Technical Summary
The feeding device of existing garbage bag blown film machines is prone to blockage by plastic particles, requiring frequent manual inspections and affecting production efficiency.
A feeding device was designed, comprising a frame, a driver, an extrusion cylinder, an auxiliary feeding cylinder, a half gear, and a spring. Through the meshing of the half gear and the rack and the elastic force of the spring, the material hopper can slide up and down reciprocally, thus avoiding the jamming of plastic particles.
This effectively prevents plastic granules from getting stuck in the hopper, enabling automated assisted feeding, reducing manual intervention, and improving production continuity and efficiency.
Smart Images

Figure CN224928459U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of garbage bag technology, specifically to a feeding device for a garbage bag blown film machine. Background Technology
[0002] Garbage bags, also known as trash bags, are disposable plastic bags used to hold and transport garbage. They are usually placed in trash cans, and when full, they can be easily tied up and disposed of, thus keeping the trash cans clean and hygienic. Garbage bag blowing machines are one of the core pieces of equipment in garbage bag production. Their main function is to heat, extrude, inflate, and cool plastic granules (such as PE, PP, etc.) to ultimately make garbage bags. The feeding device is a device that heats and extrudes the plastic and pushes it into the blowing machine.
[0003] The existing feeding device has the following problems: In the existing feeding device, after the plastic granules are put into the hopper, the plastic granules often get stuck together, causing blockage. It is necessary for staff to check frequently to see if there is a blockage problem. Utility Model Content
[0004] The purpose of this utility model is to provide a feeding device for a garbage bag blown film machine to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a feeding device for a garbage bag blown film machine, comprising a frame, a driver mounted on the frame, an extrusion cylinder fixed on the frame, a fixing cover mounted on the frame, an auxiliary feeding cylinder mounted on the extrusion cylinder, the auxiliary feeding cylinder comprising a feed cylinder, a feed cylinder fixed on the extrusion cylinder, a fixing cylinder mounted on the fixing cover, a half gear mounted in the fixing cylinder, a motor fixed on the fixing cylinder, a slide cylinder mounted in the feed cylinder, a hopper fixed on the slide cylinder, a fixing plate mounted on the surface of the slide cylinder, a side plate mounted on the fixing plate, and a rack mounted on the surface of the side plate.
[0006] Preferably, a spring is fixed to the surface of the fixing plate.
[0007] Preferably, at least two side plates are provided and are symmetrically arranged on the fixed plate.
[0008] Preferably, the side plate is attached to the surface of the feed cylinder.
[0009] Preferably, a buffer pad is fixed at the upper end of the feed cylinder.
[0010] Preferably, the surface of the feed cylinder is provided with a positioning plate, the positioning plate is provided with a positioning port, and the side plate is located in the positioning port.
[0011] Preferably, the number of positioning ports is the same as that of the side plates.
[0012] Compared with the prior art, the beneficial effects of this utility model are: Plastic granules are poured into the hopper, and the motor is turned on, causing the half-gear to rotate clockwise. When the half-gear meshes with the rack, the rotation of the half-gear pushes the rack upward, causing the side plate to slide upward and then push against the fixed plate. At this time, the spring is compressed and generates elastic force, causing the slide cylinder to slide upward in the feed cylinder. With the continuous rotation of the half-gear, the half-gear will separate from the rack, and then under the action of the spring, the fixed plate will slide downward. With the continuous rotation of the half-gear, the hopper will slide up and down repeatedly, preventing the plastic granules from getting stuck in the hopper and causing blockage. This achieves the effect of assisted feeding without the need for operators to frequently check the hopper. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 This is a front view structural diagram of the present invention.
[0015] Figure 3 This is a front view cross-sectional structural diagram of the auxiliary feeding cylinder of this utility model.
[0016] Figure 4 This is a partial enlarged view of region A of this utility model.
[0017] Figure 5 This is a top view of the feed cylinder structure of this utility model.
[0018] In the diagram: Frame-1, Driver-2, Extrusion Cylinder-3, Fixing Cover-4, Auxiliary Feeding Cylinder-5, Feeding Cylinder-51, Fixing Cylinder-52, Half Gear-53, Motor-54, Slide Cylinder-55, Hopper-56, Fixing Plate-57, Side Plate-58, Rack-59, Spring-510, Buffer Pad-511, Positioning Plate-512, Positioning Port-513. Detailed Implementation
[0019] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.
[0020] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides a feeding device for a garbage bag blown film machine, including a frame 1, a driver 2 is provided on the frame 1, an extrusion cylinder 3 is fixed on the frame 1, the driver 2 is connected to the extrusion cylinder 3, a fixing cover 4 is provided on the frame 1, and an auxiliary feeding cylinder 5 is provided on the extrusion cylinder 3.
[0021] Plastic granules enter the extrusion cylinder 3 through the auxiliary feeding cylinder 5. When the driver 2 is turned on, it will squeeze the extrusion cylinder 3 and heat the plastic granules. Then, the plastic is pushed into the blown film machine through extrusion, thereby realizing the feeding.
[0022] Please see Figure 1 , Figure 4 and Figure 5 This utility model provides a feeding device for a garbage bag blown film machine. The auxiliary feeding cylinder 5 includes a feeding cylinder 51. The feeding cylinder 51 is fixed on the extrusion cylinder 3. A fixed cylinder 52 is provided on the fixed cover 4. The feeding cylinder 51 is located inside the fixed cylinder 52. A half gear 53 is rotatably connected in the fixed cylinder 52. A motor 54 is fixed on the fixed cylinder 52. The output shaft of the motor 54 is connected to the half gear 53.
[0023] The feed cylinder 51 is equipped with a slide cylinder 55, which is slidably connected to the feed cylinder 51. A hopper 56 is fixed on the slide cylinder 55. A fixing plate 57 is provided on the surface of the slide cylinder 55. A side plate 58 is provided on the fixing plate 57. A rack 59 is provided on the surface of the side plate 58. A spring 510 is fixed on the surface of the fixing plate 57.
[0024] The side plates 58 are provided in at least two and are symmetrically arranged on the fixed plate 57. The side plates 58 are attached to the surface of the feed cylinder 51 and have the function of positioning the slide cylinder 55 to prevent the slide cylinder 55 from tilting. The slide cylinder 55 is slidably connected to the fixed cylinder 52.
[0025] The upper end of the feed cylinder 51 is fixed with a buffer pad 511, which has the effect of reducing noise.
[0026] The feed cylinder 51 is provided with a positioning plate 512 on its surface, and a positioning port 513 is provided on the positioning plate 512. The side plate 58 is located in the positioning port 513. The number of positioning ports 513 is the same as that of the side plate 58. They are used to limit the slide cylinder 55 and prevent the slide cylinder 55 from shaking and rotating.
[0027] Specifically, plastic granules are poured into the hopper 56, and the motor 54 is turned on, causing the half gear 53 to rotate clockwise. When the half gear 53 meshes with the rack 59, the rotation of the half gear 53 pushes the rack 59 upward, causing the side plate 58 to slide upward and then push the fixing plate 57. At this time, the spring 510 is compressed and generates elastic force, and the slide cylinder 55 slides upward in the feed cylinder 51. With the continuous rotation of the half gear 53, the half gear 53 will separate from the rack 59. Then, under the action of the spring 510, the fixing plate 57 slides downward. With the continuous rotation of the half gear 53, the hopper 56 will slide up and down repeatedly, preventing the plastic granules from getting stuck in the hopper 56 and causing blockage. This achieves the effect of assisted feeding without the need for staff to frequently check the hopper 56.
[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A feeding device for a garbage bag blown film machine, comprising a frame (1), a driver (2) mounted on the frame (1), an extrusion cylinder (3) fixed on the frame (1), and a fixing cover (4) mounted on the frame (1), characterized in that: It also includes an auxiliary feeding cylinder (5), which is provided on the extrusion cylinder (3). The auxiliary feeding cylinder (5) includes a feeding cylinder (51), which is fixed on the extrusion cylinder (3). A fixed cylinder (52) is provided on the fixed cover (4). A half gear (53) is provided in the fixed cylinder (52). A motor (54) is fixed on the fixed cylinder (52). A slide cylinder (55) is provided in the feeding cylinder (51). A hopper (56) is fixed on the slide cylinder (55). A fixed plate (57) is provided on the surface of the slide cylinder (55). A side plate (58) is provided on the fixed plate (57). A rack (59) is provided on the surface of the side plate (58).
2. The feeding device for a garbage bag blown film machine according to claim 1, characterized in that: A spring (510) is fixed to the surface of the fixing plate (57).
3. The feeding device for a garbage bag blown film machine according to claim 1, characterized in that: At least two side plates (58) are provided and are symmetrically arranged on the fixed plate (57).
4. The feeding device for a garbage bag blown film machine according to claim 3, characterized in that: The side plate (58) is attached to the surface of the feed cylinder (51).
5. The feeding device for a garbage bag blown film machine according to claim 1, characterized in that: A buffer pad (511) is fixed at the upper end of the feed cylinder (51).
6. The feeding device for a garbage bag blown film machine according to claim 4, characterized in that: The surface of the feed cylinder (51) is provided with a positioning plate (512), and a positioning port (513) is provided on the positioning plate (512). The side plate (58) is located in the positioning port (513).
7. The feeding device for a garbage bag blown film machine according to claim 6, characterized in that: The number of positioning ports (513) is the same as that of the side plate (58).
