Detachable nozzle of extruder

Abstract

The utility model discloses a detachable nozzle of an extruder, which relates to the technical field of nozzles of extruders, and comprises a nozzle pipe, a fixed flange is welded on the outer wall of the rear end of the nozzle pipe, a nozzle opening component is arranged at the front end of the nozzle pipe, a connecting plate is welded on the upper surface of the front end of the nozzle pipe, and the nozzle opening component is connected with the connecting plate. A machine body connecting groove is formed in the nozzle pipe, an extrusion opening is formed in one end of the machine body connecting groove and penetrates through the nozzle pipe, the nozzle pipe is in threaded connection with an extruder body through internal threads arranged on the inner wall of the machine body connecting groove, and the nozzle opening assembly comprises a first nozzle plate, a second nozzle plate and a third nozzle plate. According to the scheme, the problems that when a nozzle of an existing extruder is replaced, a flange bolt needs to be disassembled through a tool, so that the nozzle is disassembled and replaced, time and labor are wasted, frequent disassembly and abrasion are caused, the sealing performance of the nozzle and an extruder body is easily reduced, and normal extrusion is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of extruder nozzles, in particular to a detachable extruder nozzle. Background Art

[0002] 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 form it through the die.

[0003] For example, the Chinese patent (plastic extruder) with announcement number CN103921425B: includes a feeding device provided on the barrel, an external heating device is installed in sections on the outer periphery of the barrel, and the outer periphery of the screw is provided with spiral blades extending in the axial direction. The screw includes an axially connected feeding section screw and a discharging section screw, the feeding section screw is axially connected to the output shaft of the driving motor, one end of the discharging section screw is connected to the feeding section screw, and the other end is connected to the extrusion die head of the barrel discharge section. The discharging section screw is hollow cylindrical, and the outer periphery of the feeding section screw is provided with spiral blades extending in the axial direction. The outer periphery and inner periphery of the hollow cylindrical discharging section screw are provided with spiral blades in the same direction as the spiral blades on the outer periphery of the feeding section screw, and the spiral blades on the outer periphery of the feeding section screw are connected to the spiral blades on the outer periphery of the discharging section screw as a whole.

[0004] However, when replacing the nozzle of the existing extruder, it is necessary to use tools to remove the flange bolts to achieve nozzle removal and replacement, which is time-consuming and labor-intensive, and frequent disassembly and wear may easily lead to a decrease in the sealing between the nozzle and the extruder body, affecting normal extrusion; therefore, it does not meet the existing needs. In this regard, we propose a detachable nozzle for an extruder. Utility Model Content

[0005] The purpose of the utility model is to provide a detachable nozzle for an extruder to solve the problem in the above-mentioned background technology that when replacing the nozzle of the existing extruder, it is necessary to use tools to remove the flange bolts to achieve nozzle disassembly and replacement, which is time-consuming and labor-intensive, and frequent disassembly and wear may easily lead to a decrease in the sealing between the nozzle and the extruder body, thereby affecting normal extrusion.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a detachable nozzle for an extruder, comprising: a nozzle tube, a fixing flange welded to the outer wall of the rear end of the nozzle tube, a nozzle mouth assembly provided at the front end of the nozzle tube, a connecting plate welded to the upper surface of the front end of the nozzle tube, a body connecting groove provided inside the nozzle tube, an extrusion port provided at one end of the body connecting groove, and the extrusion port passing through the nozzle tube, and the nozzle tube is threadably connected to the extruder body through an internal thread provided on the inner wall of the body connecting groove.

[0007] Preferably, the nozzle mouth assembly includes a first nozzle plate, a second nozzle plate and a third nozzle plate, and a connecting frame is provided on one side surface of the first nozzle plate, the second nozzle plate and the third nozzle plate, and a rotating seat is provided at one end of the connecting frame, and the first nozzle plate, the second nozzle plate and the third nozzle plate are fixed in a circular array along the center of the rotating seat.

[0008] Preferably, mounting plates are provided on both sides of the connecting frame, and the first nozzle plate, the second nozzle plate and the third nozzle plate are threadedly fixed to the mounting plates by fixing screws provided on one side of the mounting plates.

[0009] Preferably, a fixing knob is provided at the front end of the rotating seat, and a fixing nut is provided on the outside of one end of the fixing knob.

[0010] Preferably, the front surfaces of the other sides of the first nozzle plate, the second nozzle plate and the third nozzle plate are all provided with through-type insertion holes, the front surfaces of the nozzle tubes are provided with positioning holes, and positioning pins are inserted into the front ends of the positioning holes.

[0011] Preferably, the first nozzle plate, the second nozzle plate and the third nozzle plate are all circular, and the first nozzle plate, the second nozzle plate and the third nozzle plate are rotated along the fixed knob through the rotating seat.

[0012] Preferably, the front surfaces of the first nozzle plate, the second nozzle plate and the third nozzle plate are all provided with through-type nozzles.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model provides a nozzle orifice assembly at the front end of the nozzle tube, and the nozzle orifice assembly consists of a first nozzle plate, a second nozzle plate, a third nozzle plate, a connecting frame, and a rotating seat. When the number of nozzles needs to be replaced, it is only necessary to rotate the first nozzle plate, the second nozzle plate, and the third nozzle plate to adjust the position of the first nozzle plate, the second nozzle plate, and the third nozzle plate. The number of nozzles of the first nozzle plate, the second nozzle plate, and the third nozzle plate is different. After adjusting to the required number, they are fixed by tightening the fixing knob. Compared with the existing method of disassembling the entire nozzle every time, it is only necessary to rotate the nozzle orifice assembly, thereby avoiding frequent disassembly of the nozzle resulting in poor sealing performance of the connection. In addition, the first nozzle plate, the second nozzle plate, and the third nozzle plate are detachable and replaceable through the mounting plate and the connecting frame, thereby improving the convenience of replacement and solving the problem that when replacing the nozzle of the existing extruder, the flange bolts need to be removed by tools to achieve nozzle disassembly and replacement, which is time-consuming and labor-intensive, and frequent disassembly and wear easily lead to reduced sealing between the nozzle and the extruder body, affecting normal extrusion.

[0015] 2. Through-type sockets are provided on the front surfaces of one side of the first nozzle plate, the second nozzle plate and the third nozzle plate, and positioning holes are provided on the front surface of the nozzle tube. The positioning pins pass through the through-type sockets and are inserted into the positioning holes. The number of nozzles of the first nozzle plate, the second nozzle plate and the third nozzle plate is different. After adjusting to the required number, the positioning pins are inserted into the positioning holes along the through-type sockets, which has a positioning effect on the first nozzle plate, the second nozzle plate and the third nozzle plate, thereby avoiding the deviation of the first nozzle plate, the second nozzle plate and the third nozzle plate from the nozzle tube and improving the connection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall rear view structure of the utility model;

[0018] Figure 3 This is a front view structural diagram of the nozzle assembly of the present invention;

[0019] Figure 4 This is a schematic diagram of the nozzle tube structure of the utility model;

[0020] In the figure: 1. Nozzle tube; 2. Nozzle port assembly; 3. Connecting plate; 4. Fixing flange; 5. Body connecting groove; 6. Extrusion port; 7. Internal thread; 8. First nozzle plate; 9. Second nozzle plate; 10. Third nozzle plate; 11. Connecting frame; 12. Rotating seat; 13. Mounting plate; 14. Fixing screw; 15. Socket; 16. Fixing knob; 17. Positioning hole; 18. Fixing nut; 19. Positioning column; 20. Nozzle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figure 1-4, the utility model provides an embodiment: a detachable nozzle for an extruder, comprising: a nozzle tube 1, a fixing flange 4 welded to the outer wall of the rear end of the nozzle tube 1, a nozzle port assembly 2 provided at the front end of the nozzle tube 1, a connecting plate 3 welded to the upper surface of the front end of the nozzle tube 1, a body connecting groove 5 provided inside the nozzle tube 1, an extrusion port 6 provided at one end of the body connecting groove 5, and the extrusion port 6 passes through the nozzle tube 1, the nozzle tube 1 is threadedly connected to the extruder body through an internal thread 7 provided on the inner wall of the body connecting groove 5, the nozzle port assembly 2 comprises a first nozzle plate 8, a second nozzle plate 9 and a third nozzle plate 10, the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 1 0 is provided with a connecting frame 11 on one side surface, a rotating seat 12 is provided at one end of the connecting frame 11, and the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 are fixed in a circular array along the center of the rotating seat 12, a fixing knob 16 is provided at the front end of the rotating seat 12, and a fixing nut 18 is provided on the outside of one end of the fixing knob 16. The first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 are all circular, and the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 are rotated along the fixing knob 16 through the rotating seat 12. The front surfaces of the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 are all provided with a through-type nozzle 20.

[0023] The nozzle tube 1 is threadedly connected to the extruder body through the internal thread 7 provided on the inner wall of the body connecting groove 5, and is secondary fixed to the extruder body by the fixing flange 4 to improve the stability of the connection. According to actual production needs, when the number of nozzles 20 needs to be replaced, it is only necessary to rotate the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 to adjust the position of the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10. The number of nozzles 20 of the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 is different. After adjusting to the required number, fix it by tightening the fixing knob 16. In this way, there is no need to disassemble the entire nozzle every time. You only need to rotate the nozzle port assembly 2, and the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 are removable and replaceable, which improves the convenience of replacement.

[0024] See also Figure 1 、 3 , mounting plates 13 are provided on both sides of the connecting frame 11, and the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 are threadedly fixed to the mounting plate 13 by fixing screws 14 provided on one side of the mounting plate 13. The first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 are detachable and replaceable, thereby improving the convenience of replacement.

[0025] See also Figure 1 、 3, 4. The front surfaces of the other sides of the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 are all provided with through-type sockets 15, and the front surface of the nozzle tube 1 is provided with a positioning hole 17. The front end of the positioning hole 17 is inserted with a positioning pin 19. The number of nozzles 20 of the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 is different. After adjusting to the required number, the positioning pin 19 is inserted into the positioning hole 17 along the through-type socket 15, which has a positioning effect on the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10, thereby avoiding the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 from being offset from the nozzle tube 1 and improving the connection accuracy.

[0026] Working principle: When in use, the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 correspond to a connecting frame 11 respectively. The connecting frame fixes the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 with fixing screws 14 through the mounting plate 13. The fixing screws 14 set on one side are threadedly fixed to the mounting plate 13, so that the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 are fixed in a circular array along the center of the rotating seat 12. The nozzle tube 1 is threadedly connected to the extruder body through the internal thread 7 set on the inner wall of the body connecting groove 5, and is fixed to the extruder body for a second time by the fixing flange 4 to improve the stability of the connection. According to actual production needs, when the number of nozzles 20 needs to be replaced, it is only necessary to rotate the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 to replace the first nozzle The positions of the plate 8, the second nozzle plate 9 and the third nozzle plate 10 are adjusted. The number of nozzles 20 of the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 is different. After adjusting to the required number, the positioning pin 19 is inserted into the positioning hole 17 along the through-type socket 15 to position the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10, thereby avoiding the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 from being offset from the nozzle tube 1 and improving the connection accuracy. Then, the fixing knob 16 and the fixing nut 18 are tightened to fix the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10. In this way, there is no need to disassemble the entire nozzle every time. You only need to rotate the nozzle mouth assembly 2, and the first nozzle plate 8, the second nozzle plate 9 and the third nozzle plate 10 are removable and replaceable, which improves the convenience of replacement.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A detachable nozzle for an extruder, comprising a nozzle tube (1), wherein a fixing flange (4) is welded to the outer wall of the rear end of the nozzle tube (1), and characterized in that: The front end of the nozzle tube (1) is provided with a nozzle opening assembly (2), the upper surface of the front end of the nozzle tube (1) is welded with a connecting plate (3), the interior of the nozzle tube (1) is provided with a body connection groove (5), one end of the body connection groove (5) is provided with an extrusion port (6), and the extrusion port (6) passes through the nozzle tube (1), the nozzle tube (1) is threadedly connected to the extruder body through an internal thread (7) provided on the inner wall of the body connection groove (5), and the nozzle opening assembly (2) includes a first nozzle plate (8), a second nozzle plate (9) and a third nozzle plate (10), one side surface of each of the first nozzle plate (8), the second nozzle plate (9) and the third nozzle plate (10) is provided with a connecting frame (11), one end of the connecting frame (11) is provided with a rotating seat (12), and the first nozzle plate (8), the second nozzle plate (9) and the third nozzle plate (10) are fixed in a circular array along the center of the rotating seat (12), a fixing knob (16) is provided at the front end of the rotating seat (12), and a fixing nut (18) is provided on the outside of one end of the fixing knob (16).

2. The detachable nozzle for an extruder according to claim 1, characterized in that: Mounting plates (13) are provided on both sides of the connecting frame (11), and the first nozzle plate (8), the second nozzle plate (9) and the third nozzle plate (10) are threadedly fixed to the mounting plates (13) via fixing screws (14) provided on one side of the mounting plates (13).

3. The detachable nozzle for an extruder according to claim 1, characterized in that: The front surfaces of the other sides of the first nozzle plate (8), the second nozzle plate (9) and the third nozzle plate (10) are all provided with through-type insertion holes (15), the front surface of the nozzle tube (1) is provided with a positioning hole (17), and a positioning pin (19) is inserted into the front end of the positioning hole (17).

4. The detachable nozzle for an extruder according to claim 1, characterized in that: The first nozzle plate (8), the second nozzle plate (9) and the third nozzle plate (10) are all circular, and the first nozzle plate (8), the second nozzle plate (9) and the third nozzle plate (10) are rotated along the fixed knob (16) through the rotating seat (12).

5. The detachable nozzle for an extruder according to claim 1, characterized in that: The front surfaces of the first nozzle plate (8), the second nozzle plate (9) and the third nozzle plate (10) are all provided with through-type nozzle openings (20).

Images