A co-extrusion device for producing composite modified polypropylene pipes

Abstract

The utility model provides a co-extrusion device for producing composite modified polypropylene pipes, and particularly relates to the technical field of pipes, comprising a composite co-extrusion head, a composite co-extrusion mechanism and an installation and replacement mechanism. The outer surface of the composite co-extrusion head is fixedly connected with a first connection block. During use, the co-extrusion device for producing composite modified polypropylene pipes allows material to enter from a feed inlet, and then be diverted by a diverter cone and enter a diverter slot to shape the pipe. Then, another material is injected from an injection pipe, discharged through a fixed slot, and flows into a press-fit port, thereby wrapping around the outer wall of the shaped pipe, thereby achieving a composite co-extrusion effect. When different types of pipes are needed, different core rods can be replaced, and the core rod can be unscrewed, and then the bolts can be disassembled. Then, a rotating shaft can be rotated to rotate a new die to a specified position, and then the die can be installed. In this way, a quick replacement effect can be achieved, thereby making it easier to switch the shape of the extruded pipe at will.

Description

Technical Field

[0001] The utility model relates to the technical field of pipes, in particular to a co-extrusion device for producing composite modified polypropylene pipes. Background Art

[0002] Pipes are essential materials for construction projects. Commonly used ones include water pipes, drainage pipes, gas pipes, heating pipes, wire ducts, rainwater pipes, etc. Among them, random copolymer polypropylene (PP-R) has been widely used in the field of hot and cold water pipes in buildings due to its advantages such as high temperature and high pressure resistance, good corrosion resistance, good hygiene performance, long service life, low density, light material and good toughness.

[0003] However, in the existing co-extrusion device for pipes, it is troublesome to adjust the type of the extruded pipe and replace the die during use, which affects the work efficiency. Utility Model Content

[0004] The utility model aims to provide a co-extrusion device for producing composite modified polypropylene pipes, so as to solve the problem that the existing co-extrusion device for pipes proposed in the above background technology is troublesome to adjust the model of the extruded pipe and replace the die during use, which affects the work efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a co-extrusion device for producing composite modified polypropylene pipes, comprising a composite co-extrusion head, a composite co-extrusion mechanism and an installation and replacement mechanism, wherein the outer surface of the composite co-extrusion head is fixedly connected with a first connecting block, the outer surface of the composite co-extrusion head is fixedly connected with a second connecting block, the inner surface of the composite co-extrusion head is provided with a composite co-extrusion mechanism, and one end surface of the composite co-extrusion head is provided with an installation and replacement mechanism.

[0006] Preferably, four of the first connecting blocks and four of the second connecting blocks are provided, and threaded interfaces are provided on the inner surfaces of the first connecting blocks and the second connecting blocks.

[0007] Preferably, the composite co-extrusion mechanism includes a feed port, a diverter cone, a fixed groove, an injection tube, a press-fit port, a diverter groove, a threaded hole and a core rod, the inner surface of the composite co-extrusion head is provided with a feed port, the inner surface of the composite co-extrusion head is fixedly connected with a diverter cone, the inner surface of the composite co-extrusion head is provided with a fixed groove, the inner surface of the fixed groove is connected with an injection tube, one end of the composite co-extrusion head is provided with a press-fit port, a diverter groove is provided between the diverter cone and the composite co-extrusion head, one side surface of the diverter cone is provided with a threaded hole, and the inner surface of the threaded hole is threadedly connected with a core rod.

[0008] Preferably, the fixing groove is communicated with the pressing opening, and the pressing opening is communicated with the diversion groove.

[0009] Preferably, the installation and replacement mechanism includes bolts, a third connecting block, a mouth die, a rotating shaft and a support frame, the inner surface of the second connecting block is threadedly connected with a bolt, the outer surface of the bolt is inserted with the third connecting block, one side surface of the third connecting block is fixedly connected with the mouth die, one side surface of the mouth die is rotatably connected with the rotating shaft, and the outer surface of the rotating shaft is rotatably connected with the support frame.

[0010] Preferably, the die is fixedly connected to the second connecting block by bolts, and the third connecting blocks are distributed at equal intervals on the outer wall of the die.

[0011] Preferably, four dies are provided, and the dies are distributed at equal intervals on the outer wall of the rotating shaft.

[0012] Compared with the prior art, the beneficial effect of the utility model is that during use, the co-extrusion device for producing composite modified polypropylene pipes, the material enters from the feed port, is then diverted by the diverter cone, enters the diverter slot, shapes the pipe, and then another material is injected from the injection pipe, discharged through the fixed slot, flows into the press-fit port, and is thus wrapped around the outer wall of the shaped pipe, thereby achieving the effect of composite co-extrusion. When different types of pipes are needed, different core rods can be replaced by unscrewing the core rod, then removing the bolts, rotating the shaft, turning the new die to the specified position, and then installing it. In this way, the effect of quick replacement can be achieved, making it easier to switch the shape of the extruded pipe at will. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the appearance of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the composite co-extrusion mechanism of the utility model;

[0015] Figure 3 This is a schematic diagram of the installation and replacement mechanism structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the rotating shaft and the supporting frame of the utility model in cooperation with each other.

[0017] In the figure: 1. composite co-extrusion head; 2. first connecting block; 3. second connecting block; 4. composite co-extrusion mechanism; 401. feed port; 402. diverter cone; 403. fixing groove; 404. injection pipe; 405. pressing port; 406. diverter groove; 407. threaded hole; 408. core rod; 5. installation and replacement mechanism; 501. bolt; 502. third connecting block; 503. die; 504. rotating shaft; 505. support frame. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described implementation regulations are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4 The utility model discloses a co-extrusion device for producing a composite modified polypropylene pipe, comprising a composite co-extrusion head 1, a composite co-extrusion mechanism 4 and an installation and replacement mechanism 5, wherein the outer surface of the composite co-extrusion head 1 is fixedly connected with a first connection block 2, the outer surface of the composite co-extrusion head 1 is fixedly connected with a second connection block 3, the inner surface of the composite co-extrusion head 1 is provided with the composite co-extrusion mechanism 4, and the installation and replacement mechanism 5 is provided on one end surface of the composite co-extrusion head 1.

[0020] In order to facilitate the installation and fixation of the composite co-extrusion head 1, four first connecting blocks 2 and four second connecting blocks 3 are provided, and threaded interfaces are provided on the inner surfaces of the first connecting blocks 2 and the second connecting blocks 3.

[0021] In order to co-extrude the pipe, the composite co-extrusion mechanism 4 includes an inlet 401, a diverter cone 402, a fixed groove 403, an injection pipe 404, a press-fitting port 405, a diverter groove 406, a threaded hole 407 and a core rod 408. The inner surface of the composite co-extrusion head 1 is provided with an inlet 401, the inner surface of the composite co-extrusion head 1 is fixedly connected with the diverter cone 402, the inner surface of the composite co-extrusion head 1 is provided with a fixed groove 403, the inner surface of the fixed groove 403 is connected with the injection pipe 404, one end of the composite co-extrusion head 1 is provided with a press-fitting port 405, the diverter cone 402 and the composite co-extrusion head are connected. 1, a diverter groove 406 is arranged between the diverter cone 402, a threaded hole 407 is opened on one side surface of the diverter cone 402, and a core rod 408 is threadedly connected to the inner surface of the threaded hole 407. During use, the material enters from the feed port 401, and then is diverted by the diverter cone 402 and enters the diverter groove 406 to shape the pipe. Then, another material is injected from the injection pipe 404, discharged through the fixing groove 403, and flows into the pressing port 405, so as to be wrapped around the outer wall of the molded pipe, thereby achieving a composite co-extrusion effect. When different types of pipes are needed, different core rods 408 can be replaced.

[0022] In order to better co-extrude the pipeline, the fixing groove 403 is connected to the pressing port 405 , and the pressing port 405 is connected to the diverter groove 406 .

[0023] In order to facilitate the adjustment of different pipe extrusion shapes, the installation and replacement mechanism 5 includes a bolt 501, a third connecting block 502, a die 503, a rotating shaft 504 and a support frame 505. The inner surface of the second connecting block 3 is threadedly connected with the bolt 501, and the outer surface of the bolt 501 is inserted with the third connecting block 502. The side surface of the third connecting block 502 is fixedly connected with the die 503, and the side surface of the die 503 is rotatably connected with the rotating shaft 504. The outer surface of the rotating shaft 504 is rotatably connected with the support frame 505. By unscrewing the core rod 408, then removing the bolt 501, rotating the rotating shaft 504, turning the new die 503 to the specified position, and then installing it, the effect of quick replacement can be achieved, which makes it easier to switch the shape of the extruded pipe at will.

[0024] In order to facilitate the replacement of the mouth die 503 , the mouth die 503 is fixedly connected to the second connecting block 3 by bolts 501 , and the third connecting blocks 502 are distributed at equal intervals on the outer wall of the mouth die 503 .

[0025] In order to facilitate replacement of the mouth dies 503 , four mouth dies 503 are provided, and the mouth dies 503 are distributed at equal intervals on the outer wall of the rotating shaft 504 .

[0026] Working principle: During use, the material enters from the feed port 401, then is diverted by the diverter cone 402 and enters the diverter slot 406 to shape the tube. Then another material is injected from the injection tube 404, discharged through the fixing slot 403, and flows into the pressing port 405, thereby wrapping around the outer wall of the shaped tube, thereby achieving a composite co-extrusion effect. When different types of tubes are needed, different core rods 408 can be replaced by unscrewing the core rod 408, then removing the bolt 501, rotating the shaft 504, turning the new die 503 to the specified position, and then installing it. In this way, the effect of quick replacement can be achieved, making it easier to switch the shape of the extruded tube at will.

[0027] 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 implementation rules 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 co-extrusion device for producing a composite modified polypropylene pipe, comprising a composite co-extrusion die head (1), a composite co-extrusion mechanism (4) and an installation and replacement mechanism (5), characterized in that: The outer surface of the composite co-extrusion head (1) is fixedly connected to a first connection block (2), the outer surface of the composite co-extrusion head (1) is fixedly connected to a second connection block (3), the inner surface of the composite co-extrusion head (1) is provided with a composite co-extrusion mechanism (4), and one end surface of the composite co-extrusion head (1) is provided with a mounting and replacement mechanism (5).

2. A co-extrusion device for producing a composite modified polypropylene pipe according to claim 1, characterized in that: Four of the first connecting blocks (2) and the second connecting blocks (3) are provided, and threaded interfaces are provided on the inner surfaces of the first connecting blocks (2) and the second connecting blocks (3).

3. A co-extrusion device for producing a composite modified polypropylene pipe according to claim 1, characterized in that: The composite co-extrusion mechanism (4) comprises a feed inlet (401), a diverter cone (402), a fixing groove (403), a material injection pipe (404), a press-fitting port (405), a diverter groove (406), a threaded hole (407) and a core rod (408); the inner surface of the composite co-extrusion head (1) is provided with a feed inlet (401); the inner surface of the composite co-extrusion head (1) is fixedly connected with a diverter cone (402); the inner surface of the composite co-extrusion head (1) is provided with a threaded hole (407); A fixing groove (403) is provided on the surface, the inner surface of the fixing groove (403) is connected to an injection pipe (404), one end of the composite co-extrusion head (1) is provided with a press-fitting opening (405), a diverter groove (406) is provided between the diverter cone (402) and the composite co-extrusion head (1), a threaded hole (407) is provided on one side surface of the diverter cone (402), and a core rod (408) is threadedly connected to the inner surface of the threaded hole (407).

4. A co-extrusion device for producing a composite modified polypropylene pipe according to claim 3, characterized in that: The fixing groove (403) is communicated with the pressing opening (405), and the pressing opening (405) is communicated with the diversion groove (406).

5. A co-extrusion device for producing a composite modified polypropylene pipe according to claim 1, characterized in that: The installation and replacement mechanism (5) comprises a bolt (501), a third connecting block (502), a mouth die (503), a rotating shaft (504) and a support frame (505); the inner surface of the second connecting block (3) is threadedly connected with the bolt (501); the outer surface of the bolt (501) is plugged with the third connecting block (502); one side surface of the third connecting block (502) is fixedly connected with the mouth die (503); one side surface of the mouth die (503) is rotatably connected with the rotating shaft (504); and the outer surface of the rotating shaft (504) is rotatably connected with the support frame (505).

6. A co-extrusion device for producing a composite modified polypropylene pipe according to claim 5, characterized in that: The die (503) is fixedly connected to the second connection block (3) via bolts (501), and the third connection blocks (502) are distributed at equal intervals on the outer wall of the die (503).

7. A co-extrusion device for producing a composite modified polypropylene pipe according to claim 5, characterized in that: Four of the dies (503) are provided, and the dies (503) are distributed at equal intervals on the outer wall of the rotating shaft (504).

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