Slit-type bag opener
By using the fixed and moving blades of the slit-type bag-breaking machine, and utilizing the piercing platform and the lower serrated moving blade, the problems of low efficiency in small bag processing and mixed garbage bags in existing technologies are solved, achieving efficient separation of garbage and garbage bags, and improving the efficiency and effectiveness of bag breaking.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU UNIV OF TECH
- Filing Date
- 2025-06-13
- Publication Date
- 2026-06-05
AI Technical Summary
Existing rotary cutting bag breakers are only suitable for small bag waste processing, while compression bag breakers are inefficient and the waste and garbage bags are mixed after breaking, which affects subsequent processing.
The bag-breaking machine adopts a cutting-type design. Through the cooperation of fixed and moving blades, multiple piercing platforms and a lower serrated moving blade are used to achieve efficient piercing and separation of garbage bags. The design incorporates a squeezing-type bag-breaking method to improve the bag-breaking efficiency of large quantities of garbage and ensure the separation of garbage from garbage bags.
It improves the efficiency and effectiveness of breaking open bags for large quantities of waste, achieving effective separation of waste from waste bags and facilitating subsequent waste disposal.
Smart Images

Figure CN224324278U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of waste treatment technology, and in particular to a cut-and-open bag-breaking machine. Background Technology
[0002] my country advocates the principles of waste reduction, resource recovery, and harmless disposal. Reducing the volume and amount of household waste at the source, separating it at the source, transporting it separately during the process, and processing and utilizing it separately at the end are the inevitable choices for waste disposal.
[0003] Most household waste is stored in garbage bags. Before sorting and processing, bagged waste needs to be punctured by a bag-breaking device to separate the waste from the bag. Existing bag-breaking machines are mainly divided into rotary cutting type and compression type. Rotary cutting type bag-breaking machine breaks bags with interlaced rotating blades, which has a good breaking effect, but it is only suitable for processing small bags of waste one by one continuously. Compression type bag-breaking machine can process a large number of garbage bags at one time, but the efficiency of compression bag breaking is low, and the waste is mixed with the garbage bag after breaking, which is not conducive to the subsequent waste processing. Utility Model Content
[0004] The present invention aims to solve one of the problems existing in the background art.
[0005] Therefore, this utility model provides a slitting bag-breaking machine.
[0006] The technical solution adopted by this utility model to solve its technical problem is:
[0007] A bag-breaking machine, comprising,
[0008] The processing box has a feed inlet at the top and a first discharge outlet and a second discharge outlet at the bottom.
[0009] Multiple fixed blades are fixedly connected inside the processing box and spaced apart from the bottom of the processing box;
[0010] Multiple moving blades are provided, which move toward fixed blades, and the multiple moving blades and multiple fixed blades are arranged alternately at intervals.
[0011] The feed inlet is located between the fixed blade and the moving blade, and the first discharge outlet and the second discharge outlet are located on the side of the fixed blade away from the moving blade and the side of the moving blade away from the fixed blade, respectively.
[0012] Furthermore, the multiple moving blades are connected together by a chassis. Along the X-axis, the distance between the fixed blade located in the middle position and the side wall of the chassis near the fixed blade is smaller than the distance between the fixed blades located on both sides and the moving blades.
[0013] Furthermore, the fixed blade has multiple puncture platforms along the Z-axis on its blade edge side, and the blade edge portion between adjacent puncture platforms is recessed in the direction away from the moving blade.
[0014] Furthermore, along the direction toward the feed inlet, the distance B between the end of the piercing platform near the moving blade and the side wall of the chassis near the fixed blade gradually increases.
[0015] Furthermore, there is an angle between the line connecting the endpoints of the plurality of puncture platforms near the moving blade side and the vertical plane, the angle being between 5 and 15°.
[0016] Furthermore, the end of the moving blade near the feed inlet is inclined away from the fixed blade, and the blade edge of the moving blade is configured as a downward serrated shape.
[0017] Furthermore, the moving blade is slidably connected to the bottom of the processing box via a chassis, and a push rod bracket is connected to the side of the chassis facing the fixed blade. A transmission device is provided outside the processing box, and the push rod bracket is connected to the transmission device via a push rod to control the reciprocating movement of the moving blade.
[0018] Furthermore, the push rod bracket is a U-shaped bracket with its opening facing the moving blade.
[0019] The beneficial effects of this utility model are that it adopts a squeezing bag-breaking method, which improves the bag-breaking efficiency and effect of large-volume garbage by cooperating with fixed and moving blades. Furthermore, multiple piercing platforms are designed on the fixed blade to cooperate with the moving blade with lower saw teeth, so as to realize the separation and discharge of garbage bags and garbage, which facilitates subsequent garbage processing. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Figure 1 This is a schematic diagram of the structure of the bag-cutting machine in this utility model.
[0022] Figure 2 This is a structural schematic diagram showing the positional relationship between the fixed blade and the moving blade in this utility model.
[0023] Figure 3 This is a structural schematic diagram showing the positional relationship between multiple fixed blades in this utility model.
[0024] Figure 4 This is a schematic diagram of the fixed blade in this utility model.
[0025] Figure 5 This is a structural schematic diagram showing the positional relationship between the moving blade and the chassis in this utility model.
[0026] Figure 6This is a schematic diagram of the moving blade in this utility model.
[0027] In the diagram: 1. Processing box; 11. Feed inlet; 12. First discharge port; 13. Second discharge port; 2. Feed hopper; 3. Fixed blade module; 31. Fixed blade; 32. Puncture platform; 4. Moving blade module; 41. Moving blade; 42. Chassis; 43. Push rod bracket; 44. Drive source. Detailed Implementation
[0028] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] Reference Figure 1-6A bag-breaking machine includes a processing box 1, a feeding hopper 2, a fixed blade module 3, and a moving blade module 4. The processing box 1 is provided with a feeding port 11 and two discharge ports. The feeding hopper 2 is located at the feeding port 11 at the top of the processing box 1. Specifically, the feeding hopper 2 is a hollow inverted square truncated pyramid structure, and its bottom frame is connected to the processing box 1 by bolts. In this embodiment, the upper opening of the feeding hopper 2 is 600mm in length and width, and the lower opening is 400mm in length and width. The two discharge ports are a first discharge port 12 and a second discharge port 13, both of which are located at the bottom of the processing box 1.
[0032] The fixed blade module 3 includes multiple fixed blades 31 fixedly connected inside the processing box 1. The moving blade module 4 includes multiple moving blades 41 that move toward the fixed blades 31. The fixed blades 31 are fixedly connected to the top of the processing box 1 and are spaced apart from the bottom of the processing box 1. The multiple moving blades 41 are connected together by a chassis 42 and are slidably connected to the bottom of the processing box 1.
[0033] The feed inlet 11 is located between the fixed blade 31 and the moving blade 41, and the first discharge outlet 12 is located on the side of the fixed blade 31 away from the moving blade 41. The blades of both the fixed blade 31 and the moving blade 41 extend along the axial direction of the feed hopper 2. Taking the axial direction of the feed hopper 2 as the Z-axis, the direction in which the moving blade 41 moves toward the fixed blade 31 is the Y-axis. Multiple fixed blades 31 are equidistantly spaced along the X-axis, and multiple moving blades 41 are equidistantly spaced along the X-axis. Multiple moving blades 41 move toward multiple fixed blades 31 until the moving blades 41 and the fixed blades 31 intersect. The multiple fixed blades 31 and the multiple moving blades 41 are interspersed and staggered.
[0034] Among the multiple fixed blades 31, the distance A1 between the fixed blade 31 at the middle position along the X-axis and the side wall of the chassis 42 near the fixed blade 31 is smaller than the distance A2 between the fixed blades 31 on both sides and the moving blades 41. Thus, the multiple fixed blades 31 are distributed in a goose-shaped pattern in the XY plane, which helps to reduce the resistance to bag breaking and facilitates bag breaking and the overflow of garbage inside the bag.
[0035] The fixed blade 31 has a serrated projection in the YZ plane. Multiple piercing platforms 32 are equidistantly arranged on the fixed blade 31 along the Z-axis for piercing garbage bags and hooking the plastic bags onto the piercing platforms 32. The distance B between the end of the piercing platform 32 near the moving blade 41 and the side wall of the base 42 near the fixed blade 31 gradually increases along the direction towards the feed inlet 11. That is, there is an angle between the line connecting the endpoints of the multiple piercing platforms 32 near the moving blade 41 and the vertical plane, with the angle being between 5° and 15°. In this embodiment, the fixed blade 31 has a height of 300mm in the Z-axis direction, a length of 60-230mm in the Y-axis direction, a 100mm interval between adjacent piercing platforms 32, and an inward concavity of 60mm between adjacent piercing platforms 32 away from the moving blade 41. The fixed blade 31 has a blade edge thickness of 0.1mm and a blade back thickness of 20mm.
[0036] The moving blade 41 has one end near the feed inlet 11 that is inclined away from the fixed blade 31. The blade side of the moving blade 41 is serrated downwards. The number of moving blades 41 is one more than the number of fixed blades 31. A push rod bracket 43 is connected to the side of the chassis 42 near the fixed blade 31. The push rod bracket 43 is a U-shaped structure with its opening facing the moving blade 41. Both ends are fixedly connected to the chassis 42. When the fixed blade 31 and the moving blade 41 move away from each other, part of the chassis 42 is located in the gap between the fixed blade 31 and the moving blade 41 to support the garbage bag falling into the processing box 1. A drive source 44 is provided on the outside of the processing box 1 to drive the push rod to move back and forth along the Y-axis.
[0037] The moving blade 41 can pass horizontally between two adjacent fixed blades 31 and reciprocate. When the moving blade 41 moves towards the fixed blade 31, it breaks the bag and pushes the garbage inside the bag towards the first discharge port 12, allowing it to fall into the subsequent device. When the moving blade 41 moves away from the fixed blade 31, it cleans the plastic bags hooked on the fixed blade 31 in the opposite direction and pushes the hooked items onto the fixed blade 31 into the subsequent device. In this embodiment, the center distance between adjacent moving blades 41 is 100mm, the blade edge is 1mm thick in the X-axis direction, and the blade back is 20mm thick in the X-axis direction; the base 42 is 400mm long in the Y-axis direction, 230mm long in the X-axis direction, and 20mm long in the Z-axis direction; the push rod bracket 43 is 300mm long in the Y-axis direction and 300mm long in the X-axis direction. The implementation principle of this application is as follows:
[0038] A garbage bag containing garbage is fed into the processing box 1 through the feed hopper 2. The garbage bag falls between the fixed blade 31 and the moving blade 41. The moving blade 41 is controlled by the drive source 44 to move towards the fixed blade 31, puncturing the garbage bag and pushing the garbage inside the bag towards the first discharge port 12, so that the garbage is discharged from the first discharge port 12. The garbage bag is hooked on the puncture platform 32 of the fixed blade 31. As the moving blade 41 moves away from the fixed blade 31, the serrations on the moving blade 41 hook the garbage bag off the puncture platform 32, and the garbage bag falls onto the chassis 42. With the next movement of the moving blade 41 towards the fixed blade 31, the fixed blade 31 pushes the garbage bag on the chassis 42 towards the second discharge port 13. The garbage bag falls from the chassis 42 to the bottom wall of the processing box 1. When the moving blade 41 moves away from the fixed blade 31, the garbage bag is discharged from the second discharge port 13.
[0039] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined by the scope of the claims.
Claims
1. A bag-breaking machine with a cutting mechanism, characterized in that, include, The processing box (1) has a feed inlet (11) at the top and a first discharge port (12) and a second discharge port (13) at the bottom. Multiple fixed blades (31) are fixedly connected inside the processing box (1) and spaced apart from the bottom of the processing box (1); Multiple moving blades (41) move toward fixed blades (31), and the multiple moving blades (41) and multiple fixed blades (31) are arranged alternately at intervals; The feed inlet (11) is located between the fixed blade (31) and the moving blade (41), and the first discharge port (12) and the second discharge port (13) are located on the side of the fixed blade (31) away from the moving blade (41) and the side of the moving blade (41) away from the fixed blade (31), respectively.
2. The bag-breaking machine according to claim 1, characterized in that, The multiple moving blades (41) are connected together by a chassis (42). Along the X-axis, the distance between the fixed blade (31) located in the middle position and the side wall of the chassis (42) near the fixed blade (31) is smaller than the distance between the fixed blades (31) located on both sides and the moving blades (41).
3. The bag-breaking machine according to claim 1, characterized in that, The fixed blade (31) has multiple puncture platforms (32) arranged along the Z-axis on the blade side, and the blade portion between adjacent puncture platforms (32) is recessed in the direction away from the moving blade (41).
4. The bag-breaking machine according to claim 3, characterized in that, Along the direction toward the feed inlet (11), the distance B between the end of the piercing platform (32) near the moving knife (41) and the side wall of the chassis (42) near the fixed knife (31) gradually increases.
5. The bag-breaking machine according to claim 4, characterized in that, There is an angle between the line connecting the endpoints of the plurality of puncture platforms (32) on the side near the moving knife (41) and the vertical plane, the angle being between 5 and 15°.
6. The bag-breaking machine according to claim 1, characterized in that, The moving blade (41) is inclined at one end near the feed inlet (11) and away from the fixed blade (31), and the blade side of the moving blade (41) is configured as a downward sawtooth shape.
7. The bag-breaking machine according to claim 1, characterized in that, The moving blade (41) is slidably connected to the bottom of the processing box (1) via the chassis (42). A push rod bracket (43) is connected to the side of the chassis (42) facing the fixed blade (31). A transmission device is provided outside the processing box (1). The push rod bracket (43) is connected to the transmission device via a push rod to control the reciprocating movement of the moving blade (41).
8. The bag-breaking machine according to claim 7, characterized in that, The push rod bracket (43) is a U-shaped bracket with its opening facing the moving knife (41).