A spiral diverging multi-layer co-extrusion die

Abstract

The utility model relates to CPVC pipe fitting processing technical field, and disclose a spiral shunt formula multilayer co -extrusion die head, including die head body, the outer surface fixed mounting of die head body has a plurality of feeding tray, the outer surface fixed mounting of a plurality of feeding tray has the mounting panel, the outer wall threaded connection of mounting panel has the feeding pipe, the front surface fixed mounting of feeding pipe has the fixed plate, the front surface of fixed plate is set up with the sliding slot, the utility model discloses through the cooperation between die head body, feeding tray, mounting panel, feeding pipe, fixed plate, sliding slot, sliding rod, branch, support, column, filter disc, round frame, scraper, can when filter disc is in the filtering work to material, through the rotation sliding rod drive support bottom round frame, can rotate the surface of the filter disc of multiple scrapers, scrape off the material that is jammed on the surface of filter disc, carry out material stable filtering work.

Description

Technical Field

[0001] This utility model relates to the field of CPVC pipe fitting processing technology, specifically a spiral diversion type multi-layer co-extrusion die. Background Technology

[0002] CPVC pipe fittings are widely used in chemical, fire protection, and hot water transportation fields due to their excellent corrosion resistance, high temperature resistance (long-term operating temperature can reach above 90℃) and flame retardant properties. However, a single CPVC layer has problems such as insufficient impact resistance and a high coefficient of thermal expansion. Therefore, the industry generally adopts multi-layer co-extrusion technology (such as CPVC / modified layer / reinforcing layer structure) to improve overall performance. However, existing co-extrusion dies have the following key problems in CPVC processing:

[0003] Interlayer adhesion defects: CPVC has poor compatibility with modified layers (such as ABS or MBS), and existing dies cannot guarantee sufficient fusion of the melt interface (peel strength <15N / cm).

[0004] However, existing devices require complete disassembly to clean and prevent clogging of the filter discs, and cannot be used to clean the filter discs at any time.

[0005] Therefore, we propose a spiral-flow-divergent multi-layer co-extrusion die. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the shortcomings of the prior art, this utility model provides a spiral flow splitting multi-layer co-extrusion die head, which overcomes the shortcomings of the prior art and solves the problems in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a spiral diversion type multi-layer co-extrusion die head, comprising a die head body, a plurality of feed trays fixedly mounted on the outer surface of the die head body, an mounting plate fixedly mounted on the outer surface of the plurality of feed trays, a feed pipe threadedly connected to the outer wall of the mounting plate, a fixing plate fixedly mounted on the front surface of the feed pipe, a groove formed on the front surface of the fixing plate, a slide rod slidably disposed on the inner surface of the groove, a support plate fixedly connected to the front surface of the slide rod, a support rod fixedly connected to the rear surface of the support plate, a support column fixedly connected to the rear surface of the fixing plate, a filter disc fixedly connected to the rear surface of the support column, a circular frame slidably disposed on the front surface of the filter disc, and a plurality of scrapers fixedly inserted into the inner surface of the circular frame.

[0010] Preferably, a discharge pipe is threadedly connected to the lower surface of the die head body, a baffle is fixedly connected to the outer surface of the discharge pipe, a discharge hole is opened on the front surface of the discharge pipe, a number of slots are opened on the lower surface of the die head body, a number of support rods are slidably arranged on the lower surface of the die head body, and a spring is fixedly connected to the upper surface of each of the support rods.

[0011] Preferably, the rear surface of the support rod is fixedly connected to the front surface of the circular frame, and the support rod and the slide rod are slidably arranged accordingly.

[0012] Preferably, the scraper and the front surface of the filter disc are arranged in a corresponding manner, and the circular frame is rotatably fitted onto the outer surface of the support column.

[0013] Preferably, the baffle and the support rod are arranged in a corresponding manner, the other end of the spring is fixedly connected to the upper inner wall of the slot, and the support rod and the slot are arranged in a corresponding sliding manner.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a spiral flow splitting multi-layer co-extrusion die head, which has the following beneficial effects:

[0016] 1. This spiral diversion type multi-layer co-extrusion die head, through the cooperation between the die head body, feed tray, mounting plate, feed pipe, fixing plate, slide groove, slide rod, support plate, support rod, support column, filter disc, circular frame, and scraper, can make the filter disc work by rotating the slide rod to drive the circular frame at the bottom of the support rod, which can make multiple scrapers fit against the surface of the filter disc and rotate to scrape off the material stuck on the surface of the filter disc, thus achieving stable material filtration.

[0017] 2. This spiral diversion type multi-layer co-extrusion die head, through the cooperation between the discharge pipe, baffle, discharge hole, groove, support rod and spring, can increase the installation stability of the discharge pipe at the bottom of the die head and improve the safety of material processing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an enlarged structural diagram of point A in this utility model;

[0020] Figure 3 This is an exploded view of the filter disc and related structures of this utility model;

[0021] Figure 4 This is an exploded structural diagram of the discharge pipe and related structures of this utility model.

[0022] In the diagram: 1. Die head body; 2. Feed tray; 3. Mounting plate; 4. Feed pipe; 5. Fixing plate; 6. Slide groove; 7. Slide rod; 8. Support plate; 9. Support rod; 10. Support column; 11. Filter disc; 12. Circular frame; 13. Scraper; 14. Discharge pipe; 15. Baffle; 16. Discharge hole; 17. Groove; 18. Support rod; 19. Spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please see Figures 1-3 A spiral diversion type multi-layer co-extrusion die head includes a die head body 1. A plurality of feed trays 2 are fixedly installed on the outer surface of the die head body 1. A mounting plate 3 is fixedly installed on the outer surface of the plurality of feed trays 2. A feed pipe 4 is threadedly connected to the outer wall of the mounting plate 3. A fixing plate 5 is fixedly installed on the front surface of the feed pipe 4. A groove 6 is opened on the front surface of the fixing plate 5. A slide rod 7 is slidably arranged on the inner surface of the groove 6. A support plate 8 is fixedly connected to the front surface of the slide rod 7. A support rod 9 is fixedly connected to the rear surface of the support plate 8. A support column 10 is fixedly connected to the rear surface of the fixing plate 5. A filter disc 11 is fixedly connected to the rear surface of the support column 10. A circular frame 12 is slidably arranged on the front surface of the filter disc 11. A plurality of scrapers 13 are fixedly inserted into the inner surface of the circular frame 12.

[0026] Specifically, through the cooperation between the die head body 1, the feeding disc 2, the mounting plate 3, the feeding pipe 4, the fixing plate 5, the slide groove 6, the slide rod 7, the support plate 8, the support rod 9, the support column 10, the filter disc 11, the circular frame 12, and the scraper 13, when the filter disc 11 is filtering materials, the slide rod 7 drives the circular frame 12 at the bottom of the support rod 9 to rotate multiple scrapers 13 against the surface of the filter disc 11, thereby scraping away the materials that are stuck on the surface of the filter disc 11 and performing stable material filtration.

[0027] In this embodiment: the rear surface of the support rod 9 is fixedly connected to the front surface of the circular frame 12, and the support rod 9 and the slide rod 7 are slidably arranged accordingly.

[0028] Specifically, the support rod 9 can drive the bottom circular frame 12 and the sliding rod 7 to move simultaneously.

[0029] In this embodiment: the scraper 13 is arranged correspondingly to the front surface of the filter disc 11, and the circular frame 12 is rotatably sleeved on the outer surface of the support column 10.

[0030] Specifically, multiple scrapers 13 are attached to the surface of the filter disc 11 via a circular frame 12. When they rotate, they can scrape off the material that is stuck on the surface of the filter disc 11.

[0031] Working principle: When the spiral diversion type multi-layer co-extrusion die head needs to be fed with materials, the feed pipe 4 and the mounting plate 3 are fixedly installed, and then the fixing plate 5 is installed on the feed pipe 4. The material enters through the feed pipe 4 and passes through the filter plate 11 on the support column 10 to filter impurities. Then it enters the die head body 1 through the feed plate 2. The support plate 8 can be moved to make the slide rod 7 slide back and forth in the slide groove 6. At the same time, the support rod 9 and the bottom circular frame 12 are driven to rotate back and forth with the support column 10 as the reference. This drives multiple scrapers 13 to stick to the surface of the filter plate 11 to scrape off the material, thereby scraping off the material blocking the column on the surface of the filter plate 11 and performing normal material feeding.

[0032] Example 2

[0033] Please see Figure 1 , Figure 4 Based on Embodiment 1, this utility model provides a technical solution:

[0034] In this embodiment: the lower surface of the die head body 1 is threaded with a discharge pipe 14, the outer surface of the discharge pipe 14 is fixedly connected with a baffle 15, the front surface of the discharge pipe 14 is provided with a discharge hole 16, the lower surface of the die head body 1 is provided with a plurality of slots 17, the lower surface of the die head body 1 is slidably provided with a plurality of support rods 18, and the upper surface of the plurality of support rods 18 is fixedly connected with a spring 19.

[0035] Specifically, the cooperation between the discharge pipe 14, baffle 15, discharge hole 16, slot 17, support rod 18, and spring 19 can increase the installation stability of the discharge pipe 14 at the bottom of the die head and improve the safety of material processing.

[0036] In this embodiment: the baffle 15 and the support rod 18 are arranged in a corresponding manner, the other end of the spring 19 is fixedly connected to the upper inner wall of the slot 17, and the support rod 18 and the slot 17 are arranged in a corresponding sliding manner.

[0037] Specifically, the strut 18 can slide horizontally within the slot 17 by being squeezed by the baffle 15, while simultaneously squeezing the spring 19.

[0038] Working principle: When the discharge pipe 14 is threadedly installed with the die head body 1, the discharge pipe 14 drives the baffle 15 to push upward against the bottom of the support rod 18. At the same time, as the baffle 15 approaches and adheres to the die head body 1, it pushes and squeezes multiple support rods 18 to compress multiple springs 19. The support rods 18 slide horizontally into the slot 17 and are held in place by the baffle 15. Then, after the discharge pipe 14 is installed with the die head body 1, multiple springs 19 work with the support rods 18 to exert a vertical pushing force on the baffle 15 and the discharge pipe 14, thereby doubly limiting and stabilizing the threaded connection, ensuring stable discharge from the discharge pipe 14 and the discharge hole 16.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spiral-flow-dividing multi-layer co-extrusion die, comprising a die body (1), characterized in that: The outer surface of the die head body (1) is fixedly equipped with several feeding discs (2), and the outer surface of the several feeding discs (2) is fixedly equipped with mounting plates (3). The outer wall of the mounting plate (3) is threaded with a feeding pipe (4). The front surface of the feeding pipe (4) is fixedly equipped with a fixing plate (5). The front surface of the fixing plate (5) is provided with a sliding groove (6). The inner surface of the sliding groove (6) is slidably provided with a sliding rod (7). The front surface of the sliding rod (7) is fixedly connected with a support plate (8). The rear surface of the support plate (8) is fixedly connected with a support rod (9). The rear surface of the fixing plate (5) is fixedly connected with a support column (10). The rear surface of the support column (10) is fixedly connected with a filter disc (11). The front surface of the filter disc (11) is slidably provided with a circular frame (12). The inner surface of the circular frame (12) is fixedly inserted with several scrapers (13).

2. The spiral-flow-dividing multi-layer co-extrusion die head according to claim 1, characterized in that: The lower surface of the die head body (1) is threaded with a discharge pipe (14), the outer surface of the discharge pipe (14) is fixedly connected with a baffle (15), the front surface of the discharge pipe (14) is provided with a discharge hole (16), the lower surface of the die head body (1) is provided with a plurality of slots (17), the lower surface of the die head body (1) is slidably provided with a plurality of support rods (18), and the upper surface of the plurality of support rods (18) is fixedly connected with a spring (19).

3. The spiral-flow-dividing multi-layer co-extrusion die head according to claim 1, characterized in that: The rear surface of the support rod (9) is fixedly connected to the front surface of the circular frame (12), and the support rod (9) and the slide rod (7) are slidably arranged accordingly.

4. The spiral-flow-dividing multi-layer co-extrusion die head according to claim 1, characterized in that: The scraper (13) is positioned corresponding to the front surface of the filter disc (11), and the circular frame (12) is rotatably fitted onto the outer surface of the support column (10).

5. A spiral-flow-dividing multi-layer co-extrusion die head according to claim 2, characterized in that: The baffle (15) and the support rod (18) are arranged in a corresponding manner. The other end of the spring (19) is fixedly connected to the upper inner wall of the slot (17). The support rod (18) and the slot (17) are arranged in a corresponding sliding manner.

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