Different-direction cone double-screw extruder die head

Abstract

The utility model relates to the technical field of extruder die heads, and discloses an incongruous cone double-screw extruder die head which comprises an extruder body, a die head body is installed at the front end of the extruder body, first extension blocks are fixedly connected to the two sides of the bottom of the front end of the die head body respectively, and sliding rods are fixedly connected to the tops of the first extension blocks. A second extending block is fixedly connected to the top of the sliding rod, the rear end of the second extending block is fixedly connected with the front end of the extruder body, a sliding plate is slidably connected to the surface of the sliding rod, a through groove is formed in the surface of the sliding plate, and a grip is fixedly connected to the rear end of the sliding plate. According to the different-direction cone double-screw extruder die head, a worker pulls a grip upwards to drive a sliding plate to move upwards on the surface of a sliding rod, so that a scraper at the front end of the sliding plate clings to the surface of the die head body and moves upwards, and residual waste extruded from the surface of the die head body is scraped; and through the through hole and the through groove, the waste scraped by the scraper can fall down through the through hole and the through groove, so that the surface of the die head body is kept clean and tidy, and the waste is prevented from damaging an extrusion molding model.

Description

Technical Field

[0001] The utility model relates to the technical field of extruder die heads, in particular to a heterogeneous conical twin-screw extruder die head. Background Art

[0002] The molding parts of the extruder are also called extrusion dies or extrusion heads. Their function is to distribute the plastic melt from the extruder barrel well in the die flow channel so that it can be extruded and formed from the die at a uniform speed. The molding function of the extrusion die head is crucial in the entire plastic processing process of extruded parts.

[0003] A Chinese patent discloses a granulation extrusion die for a twin-screw extruder (authorization announcement number CN218139779U). The patented technology discloses a granulation extrusion die for a twin-screw extruder. The granulation extrusion die can be quickly installed and disassembled by the device through the use of a fixing device. When the shape of the extrusion port of the extrusion die needs to be changed, the die body can be replaced by rotating it. The operation is convenient and there is no need to replace a new extrusion die, thereby reducing production costs.

[0004] With respect to the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: after long-term use, the surface of the existing extruder die will be adhered and covered by the waste produced by molding, so that the waste will scratch the molding extrusion model and damage the finished product model, affecting the quality of the product and reducing the practicality of the extruder die. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the prior art has the disadvantage that the waste produced by the die head cannot be scraped off, so we propose a die head for a counter-rotating conical twin-screw extruder.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a counter-rotating conical twin-screw extruder die head, including an extruder body, a die head body is installed at the front end of the extruder body, both sides of the bottom of the front end of the die head body are fixedly connected with a first extension block, the top of the first extension block is fixedly connected with a slide rod, the top of the slide rod is fixedly connected with a second extension block, the rear end of the second extension block is fixedly connected to the front end of the extruder body, the surface of the slide rod is slidably connected with a slide plate, the surface of the slide plate is provided with a through groove, the rear end of the slide plate is fixedly connected with a handle, the front end of the slide plate is fixedly connected with a scraper, and the surface of the scraper is provided with a plurality of through holes.

[0007] Preferably, a circular hole is opened at the front end of the die body, a pop-up spring is fixedly connected to the rear end of the inner wall of the circular hole, a limiting rod is fixedly connected to the front end of the pop-up spring, and a limiting ring is fixedly connected to the bottom of the slide plate.

[0008] Preferably, a slide groove is provided inside the limiting rod, a T-shaped column is fixedly connected to the rear end of the inner wall of the circular hole, and the surface of the T-shaped column is slidably connected to the inner wall of the slide groove.

[0009] Preferably, the surface of the limiting rod is matched with the inner diameter of the limiting ring.

[0010] Preferably, a return spring is slidably connected to the surface of the slide rod, the top of the return spring is fixedly connected to the bottom of the slide plate, and the bottom of the return spring is fixedly connected to the top of the first extension block.

[0011] Preferably, a threaded hole is provided at the top of the first extension block, a bolt is threadedly connected to the inner wall of the threaded hole, a slider is slidably connected to the surface of the bolt, and a collection box is fixedly connected to the opposite surface of the slider.

[0012] Technical effects and advantages of the utility model:

[0013] In the utility model, a worker pulls the handle upward to drive the slide plate to move upward on the surface of the slide bar, so that the scraper at the front end of the slide plate moves upward in close contact with the surface of the die body, and the waste material remaining on the surface of the die body is scraped off. The waste material scraped off by the scraper can then fall downward through the through holes and the through grooves, thereby keeping the surface of the die body clean and tidy and preventing the waste material from damaging the extruded model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the scraping structure of the utility model;

[0016] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle A;

[0017] Figure 4 This is a cross-sectional view of the structure of the utility model;

[0018] Figure 5 For this utility model Figure 4 A partial enlarged view of point B in the middle.

[0019] Legend: 1. Extruder body; 2. Die body; 3. First extension block; 4. Slide rod; 5. Second extension block; 6. Slide plate; 7. Through slot; 8. Handle; 9. Scraper; 10. Through hole; 11. Round hole; 12. Pop-up spring; 13. Limit rod; 14. Limit ring; 15. Slide groove; 16. T-shaped column; 17. Reset spring; 18. Threaded hole; 19. Bolt; 20. Slider; 21. Collection box. DETAILED DESCRIPTION

[0020] The present invention will now be further described in detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] Reference Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a technical solution: a counter-rotating conical twin-screw extruder die head, comprising an extruder body 1, a die head body 2 is installed at the front end of the extruder body 1, both sides of the bottom of the front end of the die head body 2 are fixedly connected with a first extension block 3, the top of the first extension block 3 is fixedly connected with a slide bar 4, the top of the slide bar 4 is fixedly connected with a second extension block 5, the rear end of the second extension block 5 is fixedly connected to the front end of the extruder body 1, the surface of the slide bar 4 is slidably connected with a slide plate 6, the surface of the slide plate 6 is provided with a through groove 7, the rear end of the slide plate 6 is fixedly A handle 8 is fixedly connected to the front end of the slide plate 6, and a scraper 9 is fixedly connected to the front end of the slide plate 6. A plurality of through holes 10 are provided on the surface of the scraper 9. The staff pulls the handle 8 upward to drive the slide plate 6 to move upward on the surface of the slide rod 4, so that the scraper 9 at the front end of the slide plate 6 is closely attached to the surface of the die body 2 and translates upward, and the waste material extruded from the surface of the die body 2 is scraped off, and then the waste material scraped off by the scraper 9 can fall down through the through holes 10 and the through grooves 7, so as to keep the surface of the die body 2 clean and tidy and prevent the waste material from damaging the extruded model.

[0022] Reference Figure 3 As shown, in the present embodiment: a circular hole 11 is opened at the front end of the die body 2, a pop-up spring 12 is fixedly connected to the rear end of the inner wall of the circular hole 11, a limiting rod 13 is fixedly connected to the front end of the pop-up spring 12, and a limiting ring 14 is fixedly connected to the bottom of the slide plate 6. The staff pushes the limiting rod 13 backwards to drive the pop-up spring 12 to store force, and then when the slide plate 6 is moved downward to the specified position, the limiting rod 13 is released to release the force generated by the pop-up spring 12, so that the pop-up spring 12 rebounds and pushes the limiting rod 13 to move forward and insert into the inner wall of the limiting ring 14, thereby fixing the position of the slide plate 6.

[0023] Reference Figure 3 As shown, in the present embodiment: a slide groove 15 is provided inside the limit rod 13, a T-shaped column 16 is fixedly connected to the rear end of the inner wall of the circular hole 11, and the surface of the T-shaped column 16 is slidably connected to the inner wall of the slide groove 15. When the limit rod 13 moves under the action of the pop-up spring 12, the sliding connection between the slide groove 15 and the T-shaped column 16 is used to limit the moving trajectory of the limit rod 13, and the elastic force of the pop-up spring 12 is limited to prevent the pop-up spring 12 from pushing the limit rod 13 out of the inner wall of the circular hole 11, and enable the limit rod 13 to be accurately inserted into the limit ring 14.

[0024] Reference Figure 3 As shown, in the present embodiment: the surface of the limit rod 13 is adapted to the inner diameter of the limit ring 14. By the design that the limit rod 13 is adapted to the inner diameter of the limit ring 14, the limit rod 13 and the limit ring 14 are more firmly connected, preventing the limit rod 13 from shaking in the inner wall of the limit ring 14 and causing the connection to become loose and the limit ring 14 and the limit rod 13 to separate, thereby improving the fixing effect of the limit rod 13 on the slide plate 6.

[0025] Reference Figure 5 As shown, in the present embodiment: a return spring 17 is slidably connected to the surface of the slide bar 4, the top of the return spring 17 is fixedly connected to the bottom of the slide plate 6, and the bottom of the return spring 17 is fixedly connected to the top of the first extension block 3. When the staff pulls the handle 8 upward to drive the slide plate 6 to move upward, the slide plate 6 pulls the return spring 17 to extend to accumulate force. When the staff releases the handle 8 to release the control of the slide plate 6, the return spring 17 rebounds and pulls the slide plate 6 downward to reset the position of the slide plate 6, so that the staff can use the limit rod 13 to plug the limit ring 14 to fix the slide plate 6.

[0026] Reference Figure 4 Figure 5 As shown, in this embodiment: a threaded hole 18 is opened on the top of the first extension block 3, and a bolt 19 is threadedly connected to the inner wall of the threaded hole 18, a slider 20 is slidably connected to the surface of the bolt 19, and a collecting box 21 is fixedly connected to the opposite surface of the slider 20. When the waste scraped by the scraper 9 falls downward through the through hole 10 or the through groove 7, the detachable collecting box 21 arranged at the front end of the die body 2 is used to collect the fallen waste, so that the staff can collect the waste for secondary utilization.

[0027] The practical working principle of the present invention is as follows: the staff pulls the handle 8 upwards to drive the slide plate 6 to move upward on the surface of the slide rod 4, so that the scraper 9 at the front end of the slide plate 6 is closely attached to the surface of the die body 2 and moves upward horizontally, and the waste material extruded from the surface of the die body 2 is scraped off, and then the waste material scraped off by the scraper 9 can fall down through the through hole 10 and the through groove 7, so as to keep the surface of the die body 2 clean and tidy, and prevent the waste material from damaging the extruded mold; the staff pushes the limit rod 13 backwards to drive the pop-up spring 12 to store force, and then when the slide plate 6 moves downward to the specified position, the limit rod 13 is released to release the force generated by the pop-up spring 12, so that the pop-up spring 12 rebounds and pushes the limit rod 13 to move forward and insert into the inner wall of the limit ring 14, so as to fix the position of the slide plate 6; when the limit rod 13 moves under the action of the pop-up spring 12, the sliding connection between the slide groove 15 and the T-shaped column 16 is used to limit the movement trajectory of the limit rod 13, and the elastic force of the pop-up spring 12 is limited to prevent the pop-up spring 12 from limiting the limit The rod 13 is pushed out of the inner wall of the circular hole 11, and the limiting rod 13 is precisely plugged into the limiting ring 14. The limiting rod 13 and the limiting ring 14 are designed to be compatible with each other in the inner diameter, so that the limiting rod 13 and the limiting ring 14 are more firmly plugged in, and the limiting rod 13 is prevented from shaking in the inner wall of the limiting ring 14 to cause the plug-in looseness and the limiting ring 14 to separate from the limiting rod 13, thereby improving the fixing effect of the limiting rod 13 on the slide plate 6. When the staff pulls the handle 8 upward to drive the slide plate 6 to move upward, the slide plate 6 pulls the reset spring 17 to extend into Force is accumulated, and when the staff releases the handle 8 to release the control of the slide plate 6, the reset spring 17 rebounds and pulls the slide plate 6 downward to reset the position of the slide plate 6, so that the staff can use the limit rod 13 to plug the limit ring 14 to fix the slide plate 6. When the waste scraped by the scraper 9 falls downward through the through hole 10 or the through groove 7, the fallen waste is collected by the detachable collection box 21 arranged at the front end of the die body 2, so that the staff can collect the waste for secondary utilization.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A counter-rotating conical twin-screw extruder die head, comprising an extruder body (1), characterized in that: The front end of the extruder body (1) is equipped with a die body (2), and both sides of the bottom of the front end of the die body (2) are fixedly connected with a first extension block (3), the top of the first extension block (3) is fixedly connected with a slide bar (4), the top of the slide bar (4) is fixedly connected with a second extension block (5), the rear end of the second extension block (5) is fixedly connected to the front end of the extruder body (1), the surface of the slide bar (4) is slidably connected with a slide plate (6), the surface of the slide plate (6) is provided with a through groove (7), the rear end of the slide plate (6) is fixedly connected with a handle (8), the front end of the slide plate (6) is fixedly connected with a scraper (9), and the surface of the scraper (9) is provided with a plurality of through holes (10).

2. A counter-rotating conical twin-screw extruder die head according to claim 1, characterized in that: A circular hole (11) is provided at the front end of the die body (2); a pop-up spring (12) is fixedly connected to the rear end of the inner wall of the circular hole (11); a limit rod (13) is fixedly connected to the front end of the pop-up spring (12); and a limit ring (14) is fixedly connected to the bottom of the slide plate (6).

3. A counter-rotating conical twin-screw extruder die head according to claim 2, characterized in that: A slide groove (15) is provided inside the limiting rod (13), and a T-shaped column (16) is fixedly connected to the rear end of the inner wall of the circular hole (11), and the surface of the T-shaped column (16) is slidably connected to the inner wall of the slide groove (15).

4. A counter-rotating conical twin-screw extruder die head according to claim 3, characterized in that: The surface of the limiting rod (13) is matched to the inner diameter of the limiting ring (14).

5. The die head of a counter-rotating conical twin-screw extruder according to claim 1, characterized in that: A return spring (17) is slidably connected to the surface of the slide rod (4), the top of the return spring (17) is fixedly connected to the bottom of the slide plate (6), and the bottom of the return spring (17) is fixedly connected to the top of the first extension block (3).

6. A counter-rotating conical twin-screw extruder die head according to claim 1, characterized in that: A threaded hole (18) is provided at the top of the first extension block (3); a bolt (19) is threadedly connected to the inner wall of the threaded hole (18); a slider (20) is slidably connected to the surface of the bolt (19); and a collection box (21) is fixedly connected to the opposite surface of the slider (20).

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