Screw extrusion device for brush wire production based on uniform blanking
By designing a screw extrusion device for uniform discharge, using structures such as staggered through holes and sealing plates, conical blocks and release springs, the problem of inconsistent material stress caused by uneven distance between wire holes in the prior art is solved, and the problem of inconsistent material stress caused by uneven distance between wire holes is realized. The uniform extrusion of the brush wire and the service life are extended.
Patent Information
- Application Number
- CN202420958083.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-06
AI Technical Summary
In existing screw extruders, uneven spacing between wire holes leads to inconsistent stress during material extrusion, resulting in uneven service life of brush wires, and some brush wires break due to different stresses when used.
Design a screw extrusion device based on uniform cutting, including an extruder and a base plate, with an extruder and a fixed shell on one side, and an interlaced through holes and sealing plates in the shell, through a conical block The release spring realizes uniform extrusion of the material to prevent uneven stress, and uses edge strips and material withdrawal trough to prevent edge materials from being in a high stress state for a long time.
Through this device, the material is subjected to uniform stress during extrusion, avoiding the problems of uneven brushed wire quality and uneven stress, extending the service life of brushed wire, and preventing fractures caused by high stress.
Smart Images
Figure CN222245988U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of extrusion die heads, in particular to a screw extrusion device for brush filament production based on uniform feeding. Background Art
[0002] Wire can be divided into two categories based on its use. One is brush wire used for toothbrushes, makeup brushes, paint brushes, brooms and other daily products, which are used in hair transplanting machines and usually include PP brush wire, PVC coated wire, steel brush wire, etc. The other is brush wire used to make industrial brushes, which requires copper wire, steel wire, nylon wire, plastic wire, abrasive wire, sisal, mountain palm, pig bristle, wool, etc. In the production process of brush wire, it is usually necessary to use a screw extruder to extrude the material into shape. The screw extruder relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the material, and then form it through the die.
[0003] In actual use, the existing screw extruder is provided with a plurality of wire outlet holes at one end of the lower end of the wire extrusion die. However, in actual use, the spacing between each wire outlet hole is different, and then after the material is extruded, the force applied to the material when it is extruded out of the wire hole is different, resulting in different stresses on the material on each wire outlet hole. The service life of the same batch of brush wires extruded is also different, resulting in the same batch of brush wires being partially broken due to different stresses when in use.
[0004] Therefore, it is necessary to propose a screw extruder for brush filament production based on uniform feeding to solve the above problems. Utility Model Content
[0005] The purpose of the utility model is to provide a screw extrusion device for brush wire production based on uniform feeding, so as to solve the problem proposed in the above background technology that the spacing between the wire holes are different, and after the material is extruded, the force applied to the material when it is extruded out of the wire holes is different, resulting in different stresses on the material on each wire hole, and the service life of the same batch of extruded brush wires is also different. When the same batch of brush wires are used, due to different stresses, some of the brush wires are broken during use.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screw extruder for brush wire production based on uniform feeding, comprising an extruder and a bottom plate for carrying the extruder, an extrusion shell for extruding a wire brush is provided on one side of the extruder, a fixed shell is provided inside the extrusion shell, a movable shell is movably provided inside the fixed shell, and a sealing plate is fixedly provided at one end of the movable shell and the fixed shell away from each other;
[0007] The lower ends of the movable shell and the fixed shell are both provided with a plurality of through holes, and the through holes on the movable shell and the through holes on the fixed shell are arranged in a staggered manner;
[0008] A conical block is fixedly provided inside the extrusion shell, one end of which is also fixedly connected to one end of a corresponding sealing plate. A release spring is fixedly provided inside the extrusion shell, one end of which is fixedly connected to one end of a corresponding sealing plate.
[0009] Preferably, the outer side of the sealing plate at the fixed shell is fixedly connected to the inner side of the extrusion shell, the sealing plate at the movable shell is movably connected to the inner side of the extrusion shell, and a plurality of connectors are fixedly provided at the lower end of the extrusion shell.
[0010] Preferably, the extruder includes a driving motor and an extrusion barrel fixedly connected to the driving motor, an extrusion screw is rotatably provided on the inner side of the extrusion barrel, one end of the output rod of the driving motor is connected to one end of the extrusion screw, an extrusion blade is spirally provided on the outer side of the extrusion screw, one end of the extrusion blade is fixedly provided with an edge strip, a plurality of material withdrawal grooves are equidistantly provided on the outer side of the edge strip, the cross-section of the edge strip is triangular, the material withdrawal groove is inclined to fit the edge strip, and one end of the extrusion shell is also fixedly connected to one end of the extrusion barrel.
[0011] Preferably, the through hole is arranged in a rectangular shape.
[0012] Preferably, a plurality of brackets are fixedly provided on the upper end of the bottom plate, and the brackets are also fixedly connected to the outside of the extrusion barrel, and a feed hopper is fixedly provided on the outside of the extrusion barrel.
[0013] Technical effects and advantages of the utility model:
[0014] 1. Through the fixed shell and the movable shell in the extrusion shell, the material can be extruded from the multi-movable connector at the same time when the extruder barrel conveys the material, so as to prevent the uneven quality of the brush wires caused by the force balance during extrusion and the problem of different stresses between the material wires. Through the setting of multiple through holes, the material can be contacted with the connector at the same time to the greatest extent, so that the material can be discharged evenly;
[0015] 2. Through the edge strips set on the extrusion screw, the material on the outermost side of the extrusion blade can be pushed up when conveying the material, preventing the material on the edge of the extrusion blade from always being on the edge, and through the setting of the push chute, the material on the outermost edge can be discharged inward, preventing the material on the edge from being under high stress for a long time and causing high stress problems. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of a screw extruder for brush filament production based on uniform feeding of the utility model.
[0017] Figure 2 This is a schematic diagram of the structure of the extrusion barrel of the utility model.
[0018] Figure 3This is a schematic diagram of the extruded shell structure of the utility model.
[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the extruded shell of the utility model.
[0020] Figure 5 It is a schematic diagram of the matching structure of the fixed shell and the movable shell of the utility model.
[0021] Figure 6 This is a schematic diagram of the extrusion screw structure of the utility model.
[0022] In the figure: 1. extruder; 2. bottom plate; 3. feed hopper; 4. extrusion barrel; 5. bracket; 6. extrusion screw; 7. extrusion shell; 8. fixed shell; 9. movable shell; 10. sealing plate; 11. release spring; 12. through hole; 13. conical block; 14. connector; 15. edge strip; 16. material return chute. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] The utility model provides Figure 1 - Figure 6 A screw extruder for brush wire production based on uniform feeding is shown, comprising an extruder 1 and a bottom plate 2 for supporting the extruder 1, the extruder 1 comprising a driving motor and an extrusion barrel 4 fixedly connected to the driving motor, wherein a heating device is used on the outside of the extrusion barrel 4 to heat and melt the material, wherein the heating device is a heating jacket, which is a common existing technology and will not be described in detail here, an extrusion screw 6 is rotatably arranged inside the extrusion barrel 4, one end of the driving motor output rod is connected to one end of the extrusion screw 6, an extrusion blade is spirally arranged on the outside of the extrusion screw 6, one end of the extrusion blade is fixedly provided with an edge strip 15, a plurality of material withdrawal grooves 16 are equidistantly provided on the outside of the edge strip 15, the cross section of the edge strip 15 is triangular, and the material withdrawal groove 16 is inclined to fit the edge strip 15;
[0025] A plurality of brackets 5 are fixedly provided on the upper end of the bottom plate 2, and the brackets 5 are also fixedly connected to the outside of the extrusion barrel 4, and a feed hopper 3 is fixedly provided on the outside of the extrusion barrel 4. An extrusion shell 7 for extruding a wire brush is provided on one side of the extruder 1, and a fixed shell 8 is provided on the inside of the extrusion shell 7, and a movable shell 9 is movably provided on the inside of the fixed shell 8. A sealing plate 10 is fixedly provided on the ends of the movable shell 9 and the fixed shell 8 away from each other, and one end of the extrusion shell 7 is also fixedly connected to one end of the extrusion barrel 4;
[0026] The lower ends of the movable shell 9 and the fixed shell 8 are both provided with a plurality of through holes 12, which are arranged in a rectangular shape. When the through holes 12 overlap, the overlapping gap can be increased to increase the passage of materials. The through holes 12 on the movable shell 9 and the through holes 12 on the fixed shell 8 are arranged in a staggered manner.
[0027] A conical block 13 is fixedly provided on the inner side of the extrusion shell 7. Through the setting of the conical block 13, when the material is extruded, the material can enter the interior of the movable shell 9 through the transition of the conical block 13. One end of the conical block 13 is also fixedly connected to one end of the corresponding sealing plate 10. A release spring 11 is fixedly provided on the inner side of the extrusion shell 7. One end of the release spring 11 is fixedly connected to one end of the corresponding sealing plate 10.
[0028] The outer side of the sealing plate 10 at the fixed shell 8 is fixedly connected to the inner side of the extrusion shell 7, and the sealing plate 10 at the movable shell 9 is movably connected to the inner side of the extrusion shell 7. A plurality of connecting heads 14 are fixedly provided at the lower end of the extrusion shell 7, and the connecting heads 14 are connected to the brush wire extrusion mold head through threads, wherein the connecting heads and the brush wire extrusion mold head are commonly used existing technologies and will not be described in detail here.
[0029] Working principle: The operator turns on the driving motor and the heating device on the extruder 1, and then puts the material from the feed hopper 3 into the extrusion barrel 4, and then heats and melts the material through the heating device, and then drives the extrusion screw 6 to rotate through the driving motor to convey the melted material, and then the extrusion screw 6 drives the extrusion blade to rotate, and then the edge strip 15 makes the material at the edge approach the extrusion screw 6, and then through the setting of the material return groove 16, the material at the edge flows toward the extrusion screw 6 to prevent the material at the edge from always being at the edge;
[0030] The extrusion screw 6 rotates continuously, so that the material squeezes the air in the extrusion barrel 4, so that the movable shell 9 is subjected to pressure, and the movable shell 9 drives the corresponding sealing plate 10 to squeeze the release spring 11, so that the through hole 12 on the movable shell 9 and the through hole 12 on the fixed shell 8 gradually overlap, first the air in the extrusion barrel 4 is discharged from the through hole 12 through the connector 14, so that the material enters the movable shell 9, when the internal pressure of the movable shell 9 is greater than the release spring 11, the through holes 12 on the movable shell 9 and the fixed shell 8 overlap here, at this time the extrusion screw 6 continues to work, so that the force on the movable shell 9 and the force on the release spring 11 are in a balanced state, and the material is extruded into shape.
Claims
1. A screw extruder for producing brush filaments based on uniform feeding, comprising an extruder (1) and a bottom plate (2) for supporting the extruder (1), characterized in that: An extrusion shell (7) for extruding a wire brush is provided on one side of the extruder (1), a fixed shell (8) is provided inside the extrusion shell (7), a movable shell (9) is movably provided inside the fixed shell (8), and a sealing plate (10) is fixedly provided at one end of the movable shell (9) and the fixed shell (8) away from each other; The lower ends of the movable shell (9) and the fixed shell (8) are both provided with a plurality of through holes (12), and the through holes (12) on the movable shell (9) and the through holes (12) on the fixed shell (8) are arranged in a staggered manner; A conical block (13) is fixedly provided on the inner side of the extrusion shell (7), one end of the conical block (13) is also fixedly connected to one end of a corresponding sealing plate (10), and a release spring (11) is fixedly provided on the inner side of the extrusion shell (7), one end of the release spring (11) is fixedly connected to one end of a corresponding sealing plate (10).
2. A screw extruder for brush filament production based on uniform feeding according to claim 1, characterized in that: The outer side of the sealing plate (10) at the fixed shell (8) is fixedly connected to the inner side of the extrusion shell (7), the sealing plate (10) at the movable shell (9) is movably connected to the inner side of the extrusion shell (7), and a plurality of connecting heads (14) are fixedly provided at the lower end of the extrusion shell (7).
3. A screw extruder for brush filament production based on uniform feeding according to claim 1, characterized in that: The extruder (1) comprises a driving motor and an extrusion barrel (4) fixedly connected to the driving motor, an extrusion screw (6) is rotatably arranged inside the extrusion barrel (4), one end of the output rod of the driving motor is connected to one end of the extrusion screw (6), an extrusion blade is spirally arranged on the outer side of the extrusion screw (6), one end of the extrusion blade is fixedly provided with an edge strip (15), a plurality of material return grooves (16) are equidistantly arranged on the outer side of the edge strip (15), the cross section of the edge strip (15) is triangular, the material return groove (16) is inclinedly arranged in contact with the edge strip (15), and one end of the extrusion shell (7) is also fixedly connected to one end of the extrusion barrel (4).
4. A screw extruder for brush filament production based on uniform feeding according to claim 1, characterized in that: The through hole (12) is arranged in a rectangular shape.
5. The screw extruder for producing brush filaments based on uniform feeding according to claim 3, characterized in that: A plurality of brackets (5) are fixedly provided on the upper end of the bottom plate (2), and the brackets (5) are also fixedly connected to the outside of the extrusion barrel (4), and a feed hopper (3) is fixedly provided on the outside of the extrusion barrel (4).