A device for cutting and cleaning lint from injection molded products

Abstract

This utility model relates to the field of cleaning technology for injection molded products, and more particularly to a punching and cleaning device for lint and debris from injection molded products. It includes a handle and a cutting blade fixedly connected to one end of the handle. A groove is provided at the end of the handle away from the cutting blade. A strip-shaped groove is formed on the surface of the cutting blade, and a brush for cleaning lint and debris is slidably mounted on the groove. An arc-shaped sleeve is provided on the cutting blade below the groove, and the arc-shaped sleeve is connected to the cutting blade via a mounting shaft. An adjustment mechanism is provided inside the arc-shaped sleeve, and the adjustment mechanism includes a deflection shaft and a turntable. This utility model can clean efficiently. By integrating the brush onto the cutting blade and utilizing the reciprocating motion of the punching mechanism itself, two cleaning actions are naturally completed in one punching stroke: one on the outward stroke and one on the return stroke, resulting in high cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cleaning technology for injection molded products, and in particular to a device for cutting and cleaning lint from injection molded products. Background Technology

[0002] In the injection molding industry, products often have excess sprue (gate) after demolding, which needs to be removed through a punching process. Currently, punching dies or machines equipped with cutting blades are commonly used to accomplish this operation. However, existing punching technology has a significant problem: after the cutting blade completes the punching action, burrs that are not completely removed and plastic debris generated during punching often remain at or around the cut edge of the product. These burrs and debris not only affect the appearance quality of the product, but if they remain on internal parts or precision components, they may also affect the product's assembly, performance, and even safety.

[0003] CN215283174U discloses a device for removing single-unit sprue marks from injection molded products, including a base, a vertical plate installed on one side of the upper end of the base, a top plate installed on the top of the vertical plate, a connecting shaft installed in the middle of the top plate, a first cylinder installed at the lower end of the connecting shaft through a first connecting seat, a second cylinder installed at one end of the first cylinder through a second connecting seat, and a first motor installed at one end of the second cylinder through a third connecting seat.

[0004] To address these issues, existing technologies typically employ additional cleaning procedures, such as manual blowing with air guns, brush cleaning, or setting up dedicated cleaning stations. While these methods can solve the problems to some extent, they also introduce new drawbacks, such as: increasing production steps and processing time, leading to reduced production efficiency; requiring additional labor or equipment investment, increasing production costs; and for products with complex structures or high cleaning requirements, the cleaning effect may be unstable or incomplete. Utility Model Content

[0005] The purpose of this invention is to address the following shortcomings in the prior art, which typically employs additional cleaning procedures, such as manual blowing with an air gun, brush cleaning, or setting up a separate cleaning station. This invention proposes a device for cleaning and cutting lint from injection molded products.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A device for cleaning and cutting lint from injection molded products includes a handle and a cutting blade fixedly connected to one end of the handle. A slot is provided at the end of the handle away from the cutting blade, and a strip-shaped groove is provided on the surface of the cutting blade. A brush for cleaning lint is slidably mounted on the strip-shaped groove. An arc-shaped sleeve is provided on the cutting blade below the strip groove. The arc-shaped sleeve is connected to the cutting blade via a mounting shaft. An adjustment mechanism is provided inside the arc-shaped sleeve. The adjustment mechanism includes a deflection shaft and a turntable. A side plate is connected to the lower part of the blade handle, which is connected to the cutting blade. A drive mechanism is provided on the side plate. The drive mechanism includes a motor and is connected to an adjustment mechanism.

[0007] Preferably, both sides of the handle are provided with raised strips, and the side plate is symmetrically provided with U-shaped retaining plates on the side near the handle, with the two U-shaped retaining plates engaging at one end of the raised strips.

[0008] Preferably, a U-shaped shaft is inserted through the U-shaped plate, the U-shaped shaft passes through the protrusion, and nuts are threaded onto both ends of the U-shaped shaft.

[0009] Preferably, the cutting blade has a second mounting hole, and mounting shafts are provided on both sides of the arc-shaped sleeve. The two mounting shafts are respectively installed on both sides of the cutting blade. A positioning shaft is inserted through the second mounting hole and the mounting shafts, and the two ends of the positioning shaft are also fixed by nuts.

[0010] Preferably, there are two deflection shafts and two turntables. One end of each deflection shaft is rotatably connected to both ends of the brush, and the other end of each deflection shaft is rotatably connected to the lower end of the arc-shaped sleeve. The two turntables are rotatably installed inside the arc-shaped sleeve. A sliding groove is provided on each deflection shaft, and a convex shaft is fixedly connected to the edge of each of the two turntables. The convex shaft is slidably inserted into the sliding groove, and the two turntables are fixedly connected together by a linkage shaft.

[0011] Preferably, a positioning piece is fixedly connected between the two mounting shafts, and the mounting shafts are positioned on the side of the arc-shaped sleeve away from the turntable.

[0012] Preferably, the motor is fixedly mounted on the side plate, the drive end of the motor is fixedly connected to a rotating shaft, the end of the rotating shaft away from the drive end of the motor is rotatably connected to a pulling shaft, the linkage shaft is set at a position away from the center of the turntable, and the end of the pulling shaft away from the rotating shaft is rotatably sleeved on the linkage shaft.

[0013] Preferably, two first mounting holes are provided on each of the two protrusions, the U-shaped shaft passes through the first mounting holes, and the upper end of the deflection shaft is provided with a telescopic shaft and a telescopic sleeve. The telescopic shaft is inserted into the telescopic sleeve, and the telescopic sleeve is rotatably connected to the protrusion.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This device can clean efficiently. By integrating a brush onto the cutting blade, it utilizes the reciprocating motion of the punching mechanism itself to naturally complete two cleaning actions in one punching stroke: one on the outward stroke and one on the return stroke. The cleaning efficiency is high, and the effect is significantly better than single cleaning. The structure is reliable, requires minimal modification, is simple, and hardly changes the operating logic and stability of the original punching equipment. It is easy to implement and promote.

[0015] 2. During the back-and-forth movement of the cutting blade in this device, the brush will move back and forth under the action of the adjustment mechanism and the drive mechanism. The back-and-forth movement of the brush can more effectively handle the edge lint and ensure that it is clean. By adjusting the size of the groove and the material and hardness of the brush, it can adapt to the cleaning needs of injection molded products of different sizes and different plastic materials, and has good versatility. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of a material shaving and cleaning device for injection molded products proposed in this utility model; Figure 2 This is a schematic diagram of the bottom structure of a material shaving and cleaning device for injection molded products proposed in this utility model; Figure 3 This is a schematic diagram of the back structure of a material shaving and cleaning device for injection molded products proposed in this utility model; Figure 4 A schematic diagram of the knife handle, cutting blade, and strip groove; Figure 5 This is a schematic diagram of the adjustment mechanism and the drive mechanism; Figure 6 for Figure 5 A schematic diagram of the side structure; Figure 7 A schematic diagram of the connection structure of the arc-shaped sleeve, the linkage shaft, and the turntable; Figure 8 This is a schematic diagram of the connection structure between the rotating shaft and the pulling shaft.

[0017] In the diagram: 1. Knife handle, 2. Slot, 3. Raised strip, 4. Cutting knife, 5. Strip groove, 6. Second mounting hole, 7. First mounting hole, 8. Side plate, 9. Brush, 10. Arc sleeve, 11. Deflection shaft, 12. Turntable, 13. Motor, 14. U-shaped clamping plate, 15. U-shaped shaft, 16. Pulling shaft, 17. Mounting shaft, 18. Positioning shaft, 19. Raised shaft, 20. Rotating shaft, 21. Linkage shaft. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figures 1-4 A device for cleaning and cutting lint from injection molded products includes a handle 1 and a cutting blade 4 fixedly connected to one end of the handle 1. A slot 2 is provided at the end of the handle 1 away from the cutting blade 4. A strip groove 5 is provided on the surface of the cutting blade 4. A brush 9 for cleaning lint is slidably installed on the strip groove 5. An arc-shaped sleeve 10 is provided on the cutting blade 4 below the strip groove 5. The arc-shaped sleeve 10 is connected to the cutting blade 4 through the mounting shaft 17. An adjustment mechanism is provided inside the arc-shaped sleeve 10, which includes a deflection shaft 11 and a turntable 12. A side plate 8 is connected to the lower part of the blade handle 1 that is connected to the cutting blade 4. A drive mechanism is provided on the side plate 8. The drive mechanism includes a motor 13. The drive mechanism and the adjustment mechanism are connected together.

[0020] The cutting blade 4 has a second mounting hole 6. The arc-shaped sleeve 10 has mounting shafts 17 on both sides, which are respectively mounted on both sides of the cutting blade 4. A positioning shaft 18 is inserted through the second mounting hole 6 and the mounting shafts 17, and both ends of the positioning shaft 18 are fixed with nuts. When the arc-shaped sleeve 10 is installed below the strip groove 5, both sides of the arc-shaped sleeve 10 are fitted against both sides of the cutting blade 4 via the mounting shafts 17, and then the positioning shaft 18 is inserted through the mounting shafts 17 and the cutting blade 4 for a fixed connection.

[0021] Reference Figures 5-6 Both sides of the tool holder 1 are provided with protruding strips 3, and the side plate 8 is symmetrically provided with U-shaped retaining plates 14 on the side near the tool holder 1. The two U-shaped retaining plates 14 are engaged with one end of the protruding strips 3. The side plate 8 is fixedly installed at one end of the protruding strips 3 by a detachable engaging method, and the driving mechanism is set on the side plate 8.

[0022] A U-shaped shaft 15 is inserted through the U-shaped clamping plate 14, and the U-shaped shaft 15 also passes through the protrusion 3. Nuts are threaded onto both ends of the U-shaped shaft 15. During installation, the U-shaped clamping plate 14 is clamped onto both ends of the protrusion 3, and then the U-shaped shaft 15 is inserted from one side. The end of the U-shaped shaft 15 is then fixed by nuts, thereby achieving a fixed connection between the side plate 8 and the tool holder 1.

[0023] Two deflection shafts 11 and two turntables 12 are provided. One end of each deflection shaft 11 is rotatably connected to both ends of the brush 9, and the other end of each deflection shaft 11 is rotatably connected to the lower end of the arc-shaped sleeve 10. The two turntables 12 are rotatably installed inside the arc-shaped sleeve 10. The deflection shafts 11 have grooves, and each turntable 12 has a convex shaft 19 fixedly connected to its edge. The convex shaft 19 is slidably inserted into the groove, and the two turntables 12 are fixedly connected together by a linkage shaft 21. When the turntable 12 rotates, it drives the convex shaft 19 to make a circular motion, thereby pushing the deflection shaft 11 to deflect. As the deflection shaft 11 deflects, it drives the brush 9 connected to the upper end to move back and forth in the strip groove 5, thereby cleaning the hair debris by moving the brush 9 back and forth.

[0024] A positioning plate is fixedly connected between the two mounting shafts 17. The mounting shafts 17 are positioned on the side of the arc sleeve 10 away from the turntable 12. The positioning plate is used to limit the angular position of the mounting shafts 17 and the arc sleeve 10 to ensure the stability of the arc sleeve 10. The mounting shafts 17 are relatively tilted to avoid affecting the deflection of the deflection shaft 11.

[0025] Reference Figures 7-8 The motor 13 is fixedly mounted on the side plate 8. A rotating shaft 20 is fixedly connected to the drive end of the motor 13. A pull shaft 16 is rotatably connected to the end of the rotating shaft 20 away from the drive end of the motor 13. A linkage shaft 21 is positioned on the turntable 12 away from the center. The end of the pull shaft 16 away from the rotating shaft 20 is rotatably sleeved on the linkage shaft 21. The motor 13 drives the rotating shaft 20 to rotate via its drive end. When the rotating shaft 20 rotates, it drives the pull shaft 16 to move. When the pull shaft 16 moves, it drives the linkage shaft 21 to move synchronously, drawing a circle, thus achieving the rotation effect of the turntable 12.

[0026] Two first mounting holes 7 are provided on both sides of the protrusion 3. The U-shaped shaft 15 is set through the first mounting holes 7. The upper end of the deflection shaft 11 is provided with a telescopic shaft and a telescopic sleeve. The telescopic shaft is inserted into the telescopic sleeve, and the telescopic sleeve is rotatably connected to the protrusion 19. The first mounting holes 7 are used to install and pass through the U-shaped shaft 15. The telescopic shaft and the telescopic sleeve form a telescopic structure. The lower end position of the deflection shaft 11 is fixed. As the deflection shaft 11 swings, the horizontal position of the brush 9 is fixed. The telescopic structure can adapt to changes in the upper distance.

[0027] Reference Figures 1-4During installation, the handle 1 is fixedly connected to the punching machine (the punching mechanism is existing technology; punching machines for sprue removal are usually called sprue removal machines or sprue punching machines; their working principle will not be explained in detail) via the slot 2. During punching, as the cutting blade 4 moves, the tip of the cutting blade 4 can punch the edge of the product. The moving cutting blade 4 will drive the brush 9 to move synchronously. The brush 9 can rub against the edge of the product, rubbing and sweeping over the area of ​​the product to be cleaned, usually around the cut. The bristles of the brush 9 are used to remove most of the loosely attached debris and the initial burrs, completing the first cleaning. After the edge is cut by the cutting blade 4, the cutting blade 4 is driven to reset and retract. During the resetting process of the cutting blade 4, the brush 9 moves again with the cutting blade 4 and rubs and sweeps the same area of ​​the product in the opposite direction. This action can remove the burrs and debris generated at the moment of punching or loosened but not removed due to the first cleaning, achieving a second, more thorough cleaning.

[0028] The brush 9 has a portion protruding about 0.2mm from the side of the cutter 4, ensuring that during the cutting process, the brush 9 can effectively contact and clean the product surface with appropriate pressure, while not wearing down quickly due to excessive pressure or hindering the normal movement of the cutter 4. The brush 9 is made of wear-resistant, flexible and non-shedding materials, such as nylon, pig bristles or composite fiber materials, to ensure its service life and cleaning effect, and to avoid scratching the product surface.

[0029] As the cutting blade 4 moves back and forth, the brush 9 moves back and forth under the action of the adjustment mechanism and the drive mechanism. The back and forth movement of the brush 9 more effectively removes edge lint and ensures that it is clean.

[0030] Reference Figures 5-8 The motor 13 in the drive mechanism drives the rotating shaft 20 to deflect through the drive end. The deflection of the rotating shaft 20 drives the pulling shaft 16 to move. The movement of the pulling shaft 16 will pull the linkage shaft 21. The linkage shaft 21 will move in a circular trajectory with the pulling shaft 16. Thus, the linkage shaft 21 drives the turntable 12 to rotate within the arc sleeve 10. As the turntable 12 rotates, it drives the convex shaft 19 to move. The convex shaft 19 moves within the slide groove. The upper end of the deflection shaft 11 is connected to the brush 9. The brush 9 can move back and forth within the strip groove 5. The other end of the deflection shaft 11 is rotatably installed at the fixed point at the lower end of the arc sleeve 10. As the convex shaft 19 moves, the deflection shaft 11 swings back and forth with the lower end as the center. As the deflection shaft 11 swings, it can drive the brush 9 to move back and forth within the strip groove 5. Then, when the cutting blade 4 moves, the brush 9 moves back and forth relative to the cutting blade 4 to clean the edge.

[0031] Both the side plate 8 and the arc sleeve 10 are detachable installation structures. The two sides of the side plate 8 are detachably connected by the U-shaped shaft 15. The brush 9 slides against the inner wall of the strip groove 5. The mounting shaft 17 is detachably connected by the positioning shaft 18.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for cutting and cleaning lint from injection molded products, characterized in that, Includes a handle (1) and a cutting blade (4) fixedly connected to one end of the handle (1). The end of the handle (1) away from the cutting blade (4) is provided with a slot (2). A strip groove (5) is provided on the surface of the cutting blade (4). A brush (9) for cleaning lint is slidably installed on the strip groove (5). An arc-shaped sleeve (10) is provided on the cutting blade (4) below the strip groove (5). The arc-shaped sleeve (10) is connected to the cutting blade (4) through the mounting shaft (17). An adjustment mechanism is provided inside the arc-shaped sleeve (10). The adjustment mechanism includes a deflection shaft (11) and a turntable (12). The handle (1) is connected to a side plate (8) at the lower end of the cutting blade (4). The side plate (8) is provided with a drive mechanism, which includes a motor (13). The drive mechanism and the adjustment mechanism are connected together.

2. The injection molding product lint and debris cutting and cleaning device according to claim 1, characterized in that, Both sides of the handle (1) are provided with protrusions (3), and the side plate (8) is symmetrically provided with U-shaped clamping plates (14) on the side near the handle (1). The two U-shaped clamping plates (14) are clamped at one end of the protrusions (3).

3. The injection molding product lint and debris cutting and cleaning device according to claim 2, characterized in that, A U-shaped shaft (15) is inserted through the U-shaped plate (14), and the U-shaped shaft (15) passes through the protrusion (3). Nuts are threaded onto both ends of the U-shaped shaft (15).

4. The injection molding product lint and debris cutting and cleaning device according to claim 1, characterized in that, The cutting blade (4) has a second mounting hole (6), and the arc sleeve (10) has mounting shafts (17) on both sides. The two mounting shafts (17) are respectively installed on both sides of the cutting blade (4). A positioning shaft (18) is inserted between the second mounting hole (6) and the mounting shaft (17). The two ends of the positioning shaft (18) are also fixed by nuts.

5. The injection molding product lint and debris cutting and cleaning device according to claim 4, characterized in that, Two deflection shafts (11) and two turntables (12) are provided. One end of each deflection shaft (11) is rotatably connected to both ends of the brush (9). The other end of each deflection shaft (11) is rotatably connected to the lower end of the arc sleeve (10). The two turntables (12) are rotatably installed inside the arc sleeve (10). A sliding groove is provided on each deflection shaft (11). A convex shaft (19) is fixedly connected to the edge of each of the two turntables (12). The convex shaft (19) is slidably inserted into the sliding groove. The two turntables (12) are fixedly connected together by a linkage shaft (21).

6. The injection molding product lint and debris cutting and cleaning device according to claim 5, characterized in that, A positioning piece is fixedly connected between the two mounting shafts (17), and the mounting shafts (17) are located on the side of the arc sleeve (10) away from the turntable (12).

7. The injection molding product lint and debris cutting and cleaning device according to claim 5, characterized in that, The motor (13) is fixedly mounted on the side plate (8). The drive end of the motor (13) is fixedly connected to a rotating shaft (20). The end of the rotating shaft (20) away from the drive end of the motor (13) is rotatably connected to a pull shaft (16). The linkage shaft (21) is located on the turntable (12) away from the center. The end of the pull shaft (16) away from the rotating shaft (20) is rotatably sleeved on the linkage shaft (21).

8. The injection molding product lint and debris cutting and cleaning device according to claim 3, characterized in that, Two first mounting holes (7) are provided on both sides of the protrusion (3). The U-shaped shaft (15) is set through the first mounting hole (7). The upper end of the deflection shaft (11) is provided with a telescopic shaft and a telescopic sleeve. The telescopic shaft is inserted into the telescopic sleeve. The telescopic sleeve is rotatably connected to the protrusion (19).

Images