Plastic imitation rattan extruder

Abstract

The utility model provides a plastic imitated rattan extruder, which relates to the technical field of anti-rattan processing equipment, and comprises an extruder shell, a spiral assembly is arranged on the extruder shell, the spiral assembly comprises a positioning sheet, an anti-retreating block, a rotating mandrel, a positioning core and a plurality of spiral sleeves, the side wall of the rotating mandrel is connected with a positioning rod in a sliding manner, and the positioning rod is connected with the anti-retreating block in a sliding manner. The positioning rod abuts against the inner wall of the spiral sleeve, an eccentric groove is formed in the side edge of the positioning core in the axial direction, the lower end of the positioning rod abuts against the side wall of the eccentric groove, a locking screw is connected to the anti-retreating block in a threaded mode, a locking rack is rotationally connected to the lower end of the locking screw, and the locking rack is connected to the anti-retreating block in a sliding mode. A locking gear is arranged on the positioning core, and the locking rack is meshed with the locking gear. The screw sleeve is assembled and disassembled through the locking rack, so that the worn screw sleeve can be conveniently and independently replaced, and the replacement cost of the extrusion screw rod is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rattan-proof processing equipment, in particular to a plastic imitation rattan extruder. Background Art

[0002] Plastic rattan has excellent wear resistance, good low-temperature impact resistance, self-lubrication, non-toxicity, water resistance, chemical resistance, and better heat resistance than general PE. The disadvantages are low heat resistance (heat deformation temperature), poor processing and forming properties, outer surface hardness, rigidity, and creep resistance are not as good as general engineering plastics, and the expansion coefficient is relatively large. Plastic rattan is generally extruded by an extruder.

[0003] In existing extruders, the extrusion screw usually adopts an integrated structure. Usually, the extrusion screw includes multiple mixing sections and extrusion sections in different forms. In the process of extruding the material from the feed port to the discharge port in the extruder, the hardness and particle size of the material gradually change. Therefore, the mixing section in the front half is more prone to wear and deformation than the extrusion section in the rear half. After wear occurs, the entire extrusion screw needs to be replaced, which increases the replacement cost of the extrusion screw. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a plastic rattan-like extruder, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A plastic imitation rattan extruder comprises an extruder housing, an 8-shaped extrusion groove is provided inside the extruder housing, a spiral assembly is installed in parallel inside the extrusion groove, the spiral assembly comprises a positioning piece, an anti-recoil block, a rotating core shaft and a plurality of spiral sleeves, the positioning piece is fixed on the extruder housing, the rotating core shaft is rotatably connected and penetrated on the positioning piece, the anti-recoil block is fixedly sleeved on the rotating core shaft, and the spiral sleeve comprises a plurality of rhombus-shaped mixing sleeves, a barrier mixing sleeve, an extrusion sleeve and an extrusion end head which are staggeredly arranged and slidably connected and sleeved on the rotating core shaft.

[0009] Preferably, the rotating core shaft is axially provided with a positioning hole, a positioning core is rotatably connected in the positioning hole, a plurality of positioning grooves are radially provided on the side wall of the rotating core shaft, a positioning rod is slidably connected in the positioning groove, the positioning rod abuts against the inner wall of the spiral sleeve, a positioning spring is connected between the positioning rod and the rotating core shaft, an eccentric groove is axially provided on the side edge of the positioning core, and the lower end of the positioning rod abuts against the side wall of the eccentric groove.

[0010] Preferably, the side wall of the eccentric groove is arc-shaped, and the depth of the eccentric groove gradually increases.

[0011] Preferably, a locking screw is threadedly connected to the anti-retreat block, and the lower end of the locking screw is rotatably connected to a locking rack. The locking rack is slidably connected to the anti-retreat block, a positioning groove is provided on the positioning core, a locking gear is sleeved in the positioning groove, a limited opening is provided on the rotating core shaft corresponding to the position of the locking rack, and the locking rack passes through the limited opening and engages with the locking gear.

[0012] Preferably, a sliding groove is provided on the anti-retraction block, the locking rack is slidably connected in the sliding groove, and a supporting spring is connected between the bottom wall of the sliding groove and the locking rack.

[0013] (III) Beneficial effects

[0014] The utility model provides a plastic imitation rattan extruder, which has the following beneficial effects:

[0015] 1. In the utility model, the spiral sleeve is set as a detachable diamond-shaped mixing sleeve, a barrier mixing sleeve, an extrusion sleeve and a split structure of the extrusion end to replace the traditional integrated extrusion screw, so that the spiral sleeve that is seriously worn can be replaced separately, reducing the cost of replacing the extrusion screw.

[0016] 2. In the process of replacing the spiral sleeve, the locking screw can be rotated so that the locking rack and the locking gear engage with each other, driving the positioning core to rotate in the rotating core shaft. During the rotation, the positioning rod always contacts the side wall of the eccentric groove of the positioning core under the action of the positioning spring. As the eccentric groove rotates, the depth of the contact position of the positioning rod gradually decreases. The positioning rod can slide in the positioning groove until it contacts the inner wall of the spiral sleeve to form a locked position, and then it can be assembled into a complete extrusion screw. Similarly, the spiral sleeve can be unlocked by rotating the locking screw in the opposite direction, and the spiral sleeve can be disassembled and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a plastic imitation rattan extruder of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the spiral component in the utility model;

[0019] Figure 3 It is an exploded view of the spiral component in the utility model;

[0020] Figure 4 It is a cross-sectional view of the positioning core in the utility model;

[0021] Figure 5It is a structural schematic diagram of the rotating mandrel in the utility model;

[0022] Figure 6 It is a structural schematic diagram of the positioning rod in the utility model.

[0023] In the figure: 1. Extruder housing; 2. Feed hopper; 3. Positioning plate; 4. Anti-return block; 5. Rotating mandrel; 6. Spiral sleeve; 7. Positioning core; 8. Positioning slide; 9. Positioning rod; 91. Resistance rod; 92. Mounting ring; 93. Resistance round head; 10. Positioning spring; 11. Eccentric groove; 12. Locking screw; 13. Locking rack; 14. Locking gear; 15. Limit opening; 16. Support spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] The utility model embodiment provides a plastic imitation rattan extruder,

[0026] like Figure 1-2 As shown, it includes an extruder housing 1, an 8-shaped extrusion groove is provided inside the extruder housing 1, a feeding hopper 2 is installed on the extruder housing 1, the feeding hopper 2 is connected to the extrusion groove, a spiral assembly is installed in parallel inside the extrusion groove, the spiral assembly includes a positioning piece 3, an anti-recoil block 4, a rotating core shaft 5 and a plurality of spiral sleeves 6, a positioning groove which is concave-convexly matched with the positioning piece 3 is provided on the extruder housing 1, the positioning piece 3 is installed in the positioning groove, the rotating core shaft 5 is rotatably connected and penetrated on the positioning piece 3, the anti-recoil block 4 is fixedly sleeved on the rotating core shaft 5, the anti-recoil block 4 is in contact between the positioning piece 3 and the extruder housing 1, and the spiral sleeve 6 includes a plurality of rhombus-shaped mixing sleeves, barrier mixing sleeves, extrusion sleeves and extrusion ends which are staggeredly arranged and slidably connected and sleeved on the rotating core shaft.

[0027] like Figure 3 , 4As shown in FIG. 5 , a plurality of limiting slide grooves are arranged on the rotating core shaft 5, and the inner walls of the shaped mixing sleeve, the barrier mixing sleeve, the extrusion sleeve and the extrusion end are provided with limiting slide bars, and the limiting slide bars are slidably installed in the limiting slide grooves. The limiting slide bars and the limiting slide grooves are matched with each other in a concave-convex manner, which can prevent the spiral sleeve 6 from rotating together with the rotating core shaft 5, and prevent the rotating sleeve and the rotating core shaft 5 from rotating relative to each other. The rotating core shaft 5 is provided with a positioning hole, and a positioning core 7 is rotatably connected in the positioning hole. The side wall of the rotating core shaft 5 is provided with a plurality of positioning slide grooves 8 along the radial direction. , a plurality of positioning grooves 8 are evenly distributed along the axial direction of the rotating core shaft 5, and the positioning grooves 8 correspond to the spiral sleeves 6 one by one. A positioning rod 9 is slidably connected in the positioning groove 8, and the positioning rod 9 abuts against the inner wall of the spiral sleeve 6. A positioning spring 10 is connected between the positioning rod 9 and the rotating core shaft 5. An eccentric groove 11 is axially opened on the side edge of the positioning core 7. The side wall of the eccentric groove 11 is arc-shaped, and the depth of the eccentric groove 11 gradually increases. The lower end of the positioning rod 9 abuts against the side wall of the eccentric groove 11, and the positioning spring 10 can make the positioning The rod 9 always contacts the side wall of the eccentric groove 11. As the positioning core 7 rotates, the positioning rod 9 can slide in and out along the positioning slide groove 8 to lock and unlock the spiral sleeve 6. The anti-retraction block 4 is threadedly connected with a locking screw 12, and the lower end of the locking screw 12 is rotatably connected with a locking rack 13. The locking rack 13 is slidably connected to the anti-retraction block 4. A positioning groove is provided on the positioning core 7, and a locking gear 14 is sleeved in the positioning groove. A limited opening 15 is provided on the rotating core shaft 5 corresponding to the position of the locking rack 13. The locking rack 1 3 passes through the limiting opening 15 and meshes with the locking gear 14. The anti-retraction block 4 is provided with a sliding groove, and the locking rack 13 is slidably connected in the sliding groove. The sliding groove plays a leading role in the locking rack 13 to prevent the locking rack 13 from shaking left and right. At the same time, the locking rack 13 forms mutual positioning in the axial direction through the interaction of the limiting opening 15 and the positioning groove to prevent the rotating core shaft 5 and the positioning core 7 from retreating during the rotation process. A supporting spring 16 is connected between the bottom wall of the sliding groove and the locking rack 13.

[0028] like Figure 6 As shown, the positioning rod 9 includes an integrally formed resistance rod 91, a mounting ring 92, and a resistance round head 93. The resistance rod 91 is slidably inserted into the positioning groove 8, and the front end of the resistance rod 91 is in resistance against the inner wall of the spiral sleeve 6. The positioning spring 10 is in resistance between the mounting ring 92 and the rotating core shaft 5. The lower end of the resistance round head 93 is in an arc shape and is in resistance against the side wall of the eccentric groove 11.

[0029] Working principle: In the utility model, the spiral assembly is installed in the 8-shaped extrusion groove, and the anti-retraction block 4 is in contact between the extrusion frame and the positioning piece 3, so that the anti-retraction block 4 is fixed on the extrusion shell 1. By rotating the locking screw 12, the locking rack 13 can be pushed to slide up and down in the sliding groove of the anti-retraction block 4 until it is meshed with the locking gear 14. At this time, the locking rack 13 passes through the limit opening 15 and the positioning groove. The positioning core 7 and the rotating mandrel 5 are axially limited to the anti-retraction block 4 through the locking rack 13, which can prevent the positioning core 7 and the rotating mandrel 5 from retreating during the rotation process;

[0030] In addition, the locking screw 12 can be rotated by meshing with each other through the locking rack 13 and the locking gear 14, and the positioning core 7 can be rotated. In this process, the limiting opening 15 and the locking rack 13 form a limit in the circumferential direction, so that the rotating core shaft 5 will not rotate relative to the locking rack 13, that is, the positioning core 7 rotates relative to the rotating core shaft 5 under the action of the locking rack 13, and the depth of the eccentric groove 11 gradually decreases during the rotation. The side wall of the eccentric groove 11 abuts against the positioning rod 9, so that the positioning rod 9 slides outward along the positioning slide groove 8 and abuts against the inner wall of the spiral sleeve 6, locking the spiral tooth groove, and then assembling into a complete extrusion screw. By replacing the traditional integrated extrusion screw with the split spiral sleeve 6, the severely worn spiral sleeve 6 can be replaced separately without affecting the normal use of the extrusion screw, thereby reducing the replacement cost of the extrusion screw.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic imitation rattan extruder, comprising an extruder housing, characterized in that: An 8-shaped extrusion groove is provided inside the extruder housing, and a spiral assembly is installed in parallel inside the extrusion groove. The spiral assembly includes a positioning piece, an anti-recoil block, a rotating core shaft and a plurality of spiral sleeves. The positioning piece is fixed on the extruder housing, the rotating core shaft is rotatably connected and penetrated on the positioning piece, the anti-recoil block is fixedly sleeved on the rotating core shaft, and the spiral sleeve includes a plurality of diamond-shaped mixing sleeves, a barrier mixing sleeve, an extrusion sleeve and an extrusion end head which are staggered and slidingly connected and sleeved on the rotating core shaft.

2. A plastic rattan-like extruder according to claim 1, characterized in that: The rotating core shaft is axially provided with a positioning hole, a positioning core is rotatably connected in the positioning hole, a side wall of the rotating core shaft is radially provided with a plurality of positioning grooves, a positioning rod is slidably connected in the positioning groove, the positioning rod abuts against the inner wall of the spiral sleeve, a positioning spring is connected between the positioning rod and the rotating core shaft, an eccentric groove is axially provided on the side edge of the positioning core, and the lower end of the positioning rod abuts against the side wall of the eccentric groove.

3. A plastic rattan-like extruder according to claim 2, characterized in that: The side wall of the eccentric groove is in an arc shape, and the depth of the eccentric groove increases gradually.

4. A plastic rattan-like extruder according to claim 3, characterized in that: A locking screw is threadedly connected to the anti-retreat block, and a locking rack is rotatably connected to the lower end of the locking screw. The locking rack is slidably connected to the anti-retreat block. A positioning groove is provided on the positioning core, and a locking gear is sleeved in the positioning groove. A limited opening is provided on the rotating core shaft corresponding to the position of the locking rack, and the locking rack passes through the limited opening and meshes with the locking gear.

5. A plastic rattan-like extruder according to claim 4, characterized in that: The anti-retraction block is provided with a sliding groove, the locking rack is slidingly connected in the sliding groove, and a supporting spring is connected between the bottom wall of the sliding groove and the locking rack.

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