High-efficiency fiber breaking and cutting device

Abstract

The utility model discloses a high -efficient fiber crushing cutting device in the technical field of fiber processing equipment, including the box, the box includes horizontal top plate, and the downside of top plate is vertically provided with four side plate bodies that enclose rectangle, and is equipped with screen mesh bottom plate with each side plate body bottom corresponding, and the screen mesh bottom plate is full of the opening of several sieve holes, and the top plate is vertically equipped with the feeding cylinder, and the feeding cylinder includes four cylinder side plates that enclose rectangle, and the upper portion of each cylinder side plate is obliquely equipped with the feeding side plate, and each feeding side plate encloses the feeding port, the inside rotatable of box is equipped with two parallel and equal height's rotation axis, and the rotation axis is sequentially arranged with several cutting assemblies along the length direction, and the bottom of box is equipped with several support frame. The utility model can solve the problem of fiber winding when cutting, improve cutting efficiency, prolong the life of cutting blade, the high accuracy cutting of fiber, and the blade life is promoted to 180 days above.

Description

Technical Field

[0001] This utility model belongs to the technical field of fiber processing equipment, and specifically relates to a high-efficiency fiber crushing and cutting device. Background Technology

[0002] When recycling polyester fiber waste, long fibers need to be cut into short fibers to facilitate subsequent recycling processes. Current cutting machines have the following problems when cutting fibers: uneven cutting; traditional fixed-angle blades cause fibers to entangle in the blade holder, resulting in large variations in finished product length (error > 8mm) and low efficiency; severe blade wear; unidirectional cutting causes localized stress concentration on the blade edge, reducing its lifespan to less than 90 days; the main technical defect is poor adaptability, as it cannot adjust the cutting angle according to fiber thickness. Utility Model Content

[0003] The purpose of this invention is to provide a high-efficiency fiber crushing and cutting device that can solve the problem of fiber entanglement during cutting, improve cutting efficiency, extend the life of the cutting blade, achieve high-precision cutting of fibers, and increase the blade life to more than 180 days.

[0004] The purpose of this utility model is achieved as follows: A high-efficiency fiber crushing and cutting device includes a box body, the box body including a horizontal top plate, four rectangular side plates vertically arranged on the lower side of the top plate, a screen bottom plate corresponding to the bottom of each side plate, the screen bottom plate being covered with a number of screen holes, a feed cylinder vertically arranged on the top plate, the feed cylinder having a rectangular cross-section in the horizontal direction, the feed cylinder including four rectangular cylindrical side plates, each cylindrical side plate having an inclined feed side plate at the top, each feed side plate forming a feed inlet, two parallel and equal-height rotating shafts rotatably arranged inside the box body, the two rotating shafts being arranged correspondingly front and rear, a number of cutting components arranged sequentially along the length direction of the rotating shafts, each group of cutting components including a number of cutting blades evenly distributed along the circumference of the rotating shaft, and a number of support frames provided at the bottom of the box body.

[0005] This invention adopts a modular design. The frame is made of welded steel plates, and the feed inlet is tilted at 30° to facilitate the entry of fibrous materials. The crushing and cutting chamber has a built-in double-axis counter-rotating blade assembly to improve cutting efficiency. During operation, the material enters the feed cylinder through the feed inlet and then slides into the housing. A reduction motor inside the right casing drives either rotating shaft to rotate. The two rotating shafts rotate synchronously in opposite directions under the action of synchronous gears, causing the cutting blades on the two shafts to rotate relative to each other and cut the fibers. The fibers are sheared and torn by the blades. A conveyor belt is located below the screen bottom plate. The shredded fiber material falls through the screen onto the conveyor belt below and is sent to the collection bin. Extra-long fibers are rotated and lifted back between the cutting blades on the two rotating shafts for secondary crushing. Compared with the prior art, the advantages of this invention are: it solves the problem of fiber entanglement during cutting; it improves cutting efficiency and extends the life of the cutting blades by cutting fibers at multiple angles with multiple sets of blades; it achieves high-precision cutting with an error of ±4mm; and the blade life is increased to over 180 days.

[0006] As a further improvement of this utility model, the screen bottom plate is arc-shaped, and the top plate, four side plates, and the screen bottom plate form a cutting cavity, with the support frame located around the screen bottom plate. Fibers enter the cutting cavity for cutting.

[0007] As a further improvement of this utility model, the flow area of ​​the feed inlet formed by each of the feed side plates decreases from top to bottom, the inclination angle between the feed side plate and the horizontal plane is 30°, and the feed cylinder is connected to the inside of the box. A top cover is provided corresponding to the opening of the feed cylinder, and the feed cylinder is sealed by the top cover when the fiber cutting operation is not performed.

[0008] As a further improvement of this utility model, four sets of cutting components are arranged sequentially along the length of the rotating shaft. Two adjacent sets of cutting components are staggered by 10° around the circumference of the rotating shaft. Each cutting component includes three cutting blades evenly distributed around the circumference of the rotating shaft. Each cutting blade has a cutting edge at its front and two waist-shaped connecting grooves. Three mounting surfaces are evenly distributed around the circumference of each cutting component on the rotating shaft. The cutting blades fit against the corresponding mounting surfaces. Each cutting blade is fixed to the rotating shaft by two fasteners passing through the corresponding waist-shaped connecting grooves. After loosening the fasteners (bolts), the position of the cutting blades can be adjusted back and forth along the length of the waist-shaped connecting grooves, and then the fasteners can be fixed to adjust the extension position of the cutting blades. The staggered arrangement of each set of cutting components around the circumference of the rotating shaft, along with the simultaneous cutting of fibers at multiple angles by multiple sets of blades, improves cutting efficiency.

[0009] As a further improvement of this utility model, the left and right sides of the housing are respectively provided with a left mounting cover and a right mounting cover. The left ends of both rotating shafts extend out of the housing and into the left mounting cover, where synchronous gears are installed. The two synchronous gears mesh with each other. The right end of either rotating shaft extends out of the housing and into the right mounting cover, where a pulley is installed. The pulley is connected to a reduction motor via a transmission belt. The reduction motor is mounted on the right mounting cover. The reduction motor drives the pulley to rotate, thus powering the rotating shafts. The synchronous gears drive the two rotating shafts to rotate synchronously in opposite directions. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a longitudinal sectional view of the housing, feed cylinder, and rotating shaft.

[0012] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0013] Figure 4 This is a top view of the two rotation axes inside the box.

[0014] Figure 5 This is the front view of the cutting blade.

[0015] Figure 6 This is a side view of the cutting blade.

[0016] The components include: 1. Box body, 1a. Top plate, 1b. Side plate, 1c. Screen bottom plate, 2. Screen hole, 3. Feed cylinder, 3a. Cylinder side plate, 3b. Feed side plate, 4. Feed port, 5. Rotary shaft, 6. Cutting assembly, 7. Cutting blade, 8. Support frame, 9. Cutting cavity, 10. Waist-shaped connecting groove, 11. Mounting surface, 12. Fastener, 13. Left mounting cover, 14. Right mounting cover, 15. Synchronous gear, and 16. Pulley. Detailed Implementation

[0017] like Figure 1-6As shown, a high-efficiency fiber crushing and cutting device includes a housing 1. The housing 1 includes a horizontal top plate 1a. Four rectangular side plates 1b are vertically arranged on the lower side of the top plate 1a. A screen bottom plate 1c is provided corresponding to the bottom of each side plate 1b. The screen bottom plate 1c is covered with a number of screen holes 2 and is arc-shaped. The top plate 1a, the four side plates 1b, and the screen bottom plate 1c form a cutting cavity 9. A support frame 8 is located around the screen bottom plate 1c. Fibers enter the cutting cavity 9 for cutting. A feed cylinder 3 is vertically arranged on the top plate 1a. The feed cylinder 3 has a rectangular cross-section in the horizontal direction and includes four rectangular cylindrical side plates 3a. The upper part of each cylindrical side plate 3a is inclined with a feed inlet. The feed side plate 3b forms a feed inlet 4, and the flow area of ​​the feed inlet 4 formed by the feed side plate 3b decreases from top to bottom. The angle between the feed side plate 3b and the horizontal plane is 30°. The feed cylinder 3 is connected to the inside of the box body 1. A top cover is provided corresponding to the opening of the feed cylinder 3. When the fiber cutting operation is not performed, the feed cylinder 3 is sealed by the top cover. Two parallel and equal-height rotating shafts 5 are rotatably provided inside the box body 1. The two rotating shafts 5 are arranged in front and behind each other. Several cutting components 6 are arranged sequentially along the length direction on the rotating shafts 5. Each group of cutting components 6 includes several cutting blades 7 evenly distributed around the circumference of the rotating shaft 5. Several support frames 8 are provided at the bottom of the box body 1.

[0018] Four sets of cutting components 6 are arranged sequentially along the length of the rotating shaft 5. Adjacent sets of cutting components 6 are staggered by 10° around the circumference of the rotating shaft 5. Each cutting component 6 includes three cutting blades 7 evenly distributed around the circumference of the rotating shaft 5. Each cutting blade 7 has a cutting edge at its front and two waist-shaped connecting grooves 10. Each set of cutting components 6 has three circumferentially distributed mounting surfaces 11 on the rotating shaft 5. The cutting blades 7 fit into their corresponding mounting surfaces 11. Each cutting blade 7 is fixed to the rotating shaft 5 by two fasteners 12 passing through the corresponding waist-shaped connecting grooves 10. Loosening the fasteners 12 (bolts) and adjusting the position of the cutting blades 7 along the length of the waist-shaped connecting grooves 10, then fixing the fasteners 12, allows adjustment of the extended position of the cutting blades 7. The staggered arrangement of the cutting components 6 around the rotating shaft 5, with multiple blades cutting fibers simultaneously at multiple angles, improves cutting efficiency.

[0019] The housing 1 has a left mounting cover 13 and a right mounting cover 14 on its left and right sides, respectively. The left ends of the two rotating shafts 5 extend out of the housing 1 and into the left mounting cover 13, where they are fitted with synchronous gears 15. The two synchronous gears 15 mesh with each other. The right end of either rotating shaft 5 extends out of the housing 1 and into the right mounting cover 14, where it is fitted with a pulley 16. The pulley 16 is connected to a geared motor via a transmission belt. The geared motor is mounted on the right mounting cover 14. The geared motor drives the pulley 16 to rotate, thus powering the rotating shafts 5. The synchronous gears 15 then drive the two rotating shafts 5 to rotate synchronously in opposite directions.

[0020] This utility model adopts a modular design. The frame is made of welded steel plate frame. The feed inlet 4 is inclined at 30° to facilitate the entry of fibrous materials. The crushing and cutting chamber 9 has a built-in double-axis counter-rotating blade assembly to improve cutting efficiency. The assembly process of this utility model is as follows: install the rotating shaft 5 to the frame bearing seat so that the coaxiality error is ≤0.05mm; install the first set of cutting components 6 at an initial angle of 15°, and then install the remaining three sets of cutting components 6 in sequence at circumferential intervals of 10°. Next, tighten the M12 high-strength connecting bolts between the cutting blade 7 and the rotating shaft 5. Finally, connect the synchronous belt and adjust the tensioning pulley so that the belt deflection is ≤2mm.

[0021] In operation, the material enters the feed cylinder 3 through the feed inlet 4 and then slides into the housing 1. A reduction motor inside the right cover drives either of the rotating shafts 5 to rotate. The two rotating shafts 5 rotate synchronously in opposite directions under the action of the synchronous gear 15, causing the cutting blades 7 on the two rotating shafts 5 to rotate relative to each other and cut the fibers. The fibers are sheared and torn by the blades. A conveyor belt is located below the screen bottom plate 1c. The shredded fiber material falls through the screen onto the conveyor belt below and is sent to the collection bin. Extra-long fibers are rotated and lifted back between the cutting blades 7 of the two rotating shafts 5 for secondary crushing. The advantages of this invention are: it solves the problem of fiber entanglement during cutting; it improves cutting efficiency and extends the life of the cutting blades 7 by cutting fibers at multiple angles with multiple sets of blades; it achieves high-precision cutting with an error of ±4mm; and the blade life is increased to over 180 days.

[0022] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A high efficiency fiber breaking cutting device, characterized by, The device includes a housing, which includes a horizontal top plate. Four rectangular side plates are vertically arranged on the lower side of the top plate. A screen bottom plate is correspondingly provided at the bottom of each side plate, and the screen bottom plate is covered with a number of screen holes. A feed cylinder is vertically arranged on the top plate. The feed cylinder has a rectangular cross-section in the horizontal direction and includes four rectangular cylindrical side plates. Each cylindrical side plate has an inclined feed side plate at its upper part, forming a feed inlet. Two parallel and equal-height rotating shafts are rotatably arranged inside the housing, with the two rotating shafts positioned corresponding to each other. A number of cutting components are arranged sequentially along the length of the rotating shafts. Each cutting component includes a number of cutting blades evenly distributed circumferentially along the rotating shaft. A number of support frames are provided at the bottom of the housing.

2. A high efficiency fiber breaking and cutting device according to claim 1, wherein, The screen bottom plate is arc-shaped, and the top plate, four side plates and the screen bottom plate form a cutting cavity. The support frame is located on the periphery of the screen bottom plate.

3. A high efficiency fiber breaking and cutting device according to claim 1 or 2, characterized in that, The flow area of ​​the feed inlet formed by each feed side plate decreases from top to bottom. The inclination angle between the feed side plate and the horizontal plane is 30°. The feed cylinder is connected to the inside of the box.

4. A high-efficiency fiber crushing and cutting device according to claim 1 or 2, characterized in that, Four sets of cutting components are arranged sequentially along the length of the rotating shaft. The two sets of cutting components that are adjacent to each other along the axis are staggered by 10° along the circumference of the rotating shaft. Each cutting component includes three cutting blades that are evenly distributed along the circumference of the rotating shaft. The cutting blades have a cutting edge at the front and two waist-shaped connecting grooves. Each set of cutting components on the rotating shaft has three mounting surfaces that are evenly distributed along the circumference. The cutting blades fit into the corresponding mounting surfaces. Each cutting blade is fixed to the rotating shaft by two fasteners that pass through the corresponding waist-shaped connecting grooves.

5. The high-efficiency fiber crushing and cutting device according to claim 4, characterized in that, The left and right sides of the housing are respectively provided with a left mounting cover and a right mounting cover. The left ends of the two rotating shafts extend out of the housing and into the left mounting cover, and are equipped with synchronous gears. The two synchronous gears mesh with each other. The right end of either rotating shaft extends out of the housing and into the right mounting cover, and is equipped with a pulley. The pulley is connected to the reduction motor via a transmission belt.

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