Double-hot-melting die sleeve of metal-plastic composite pipe

Abstract

The utility model discloses a double-hot-melting die sleeve of a metal plastic composite pipe, which comprises a double-hot-melting die sleeve body, an internal die core is arranged on the double-hot-melting die sleeve body, an external die sleeve is arranged outside the internal die core, a material channel is arranged between the internal die core and the external die sleeve, two sides of the external die sleeve are respectively provided with a first material injection port and a second material injection port, and the first material injection port and the second material injection port are communicated with each other. A bottom sealing plate and a matched installation bottom plate are arranged at one end of the outer die sleeve, an end fixing block is arranged at the other end of the outer die sleeve, an end fixing block and a material supplementing port are arranged outside the end fixing block, and a channel filler block is arranged in the center of the interior of the end fixing block. The inner mold and the outer mold are used for heating at the same time, internal and external double hot melting molding is achieved, production of the metal-plastic composite pipe can be better improved, and uniformity of the whole pipe body of the metal-plastic composite pipe can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a double hot-melt mold sleeve of a metal-plastic composite pipe. Background Art

[0002] At present, the use of double hot-melt connection of plastic pipes or metal-plastic composite pipes (the inner and outer layers are plastic, and the middle layer is metal) has become a well-known and relatively mature technical choice. The commonly used double hot-melt socket fittings refer to a socket provided between the inner ring wall and the outer ring wall at the end position of the pipe fitting. The plastic pipe or the metal-plastic composite pipe is inserted into the socket. Through hot-melt treatment, the inner and outer surfaces of the plastic pipe or the metal-plastic composite pipe can be firmly fused with the inner and outer ring walls of the socket fitting respectively, thereby achieving a connection effect with good sealing, high strength and high connection accuracy. It is widely used in many waterproof, anti-corrosion and high-pressure occasions.

[0003] However, the molds currently used in the production of metal-plastic composite pipes are basically formed by unidirectional heating and melting, which leads to low efficiency in pipe production and easily causes uneven thickness of pipe production. Therefore, an improved technology is urgently needed to solve this problem in the prior art. Utility Model Content

[0004] The utility model aims to provide a double hot melt mold sleeve body with an internal mold core, an external mold sleeve outside the internal mold core, a material channel between the internal mold core and the external mold sleeve, a first injection port and a second injection port are respectively provided on both sides of the external mold sleeve, one end of the external mold sleeve is provided with a bottom sealing plate, and a bottom plate is matched to be installed, the other end of the external mold sleeve is provided with an end fixing block, the outside of the end fixing block is provided with an end fixing block and a feeding port, and a channel lining block is provided in the center of the end fixing block, and heating is performed simultaneously by the inner and outer double molds to realize the inner and outer double hot melt molding, which can better improve the production of metal-plastic composite pipes and ensure the uniformity of the entire pipe body of the metal-plastic composite pipe. The double hot melt mold sleeve of the metal-plastic composite pipe can solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double hot melt mold sleeve of a metal-plastic composite pipe, comprising a double hot melt mold sleeve body, an external mold sleeve is arranged on the double hot melt mold sleeve body, an internal mold core is arranged at the center of the external mold sleeve, one end of the external mold sleeve and the internal mold core is provided with a bottom sealing plate, and a bottom plate is matched to be installed, the other end of the external mold sleeve and the internal mold core is provided with a first end fixing block, a second end fixing block is arranged outside the first end fixing block, and one end of the second end fixing block is matched to be installed with the first end fixing block and the internal mold core;

[0006] A channel liner is provided in the center of the second end fixing block, one end of the channel liner is matched and installed with an end of the internal mold core, and a fixing plate is provided outside the other end of the channel liner.

[0007] Preferably, a material channel is provided between the outer mold sleeve and the inner mold core, a first injection port is provided on one side of the outer mold sleeve, and a second injection port is provided on the other side of the outer mold sleeve, and the first injection port and the second injection port are both connected to the material channel.

[0008] Preferably, a feeding port is provided on one side wall of the second end head fixing block, and the feeding port is communicated with a material channel inside the second end head fixing block.

[0009] Preferably, the outer mold sleeve and the inner mold core are both provided with heating resistance wires, and the heating resistance wires inside the outer mold sleeve are evenly arranged inside the outer mold sleeve and installed close to the inner wall of the outer mold sleeve;

[0010] The interior of the internal mold core is evenly provided with heating resistance wires, and the heating resistance wires inside the internal mold core are evenly arranged close to the outer wall of the internal mold core.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) A feeding port is provided on one side wall of the second end fixing block, and the feeding port is connected to the material channel inside the second end fixing block. The feeding port can be used to feed the pipe between the material channel between the second end fixing block and the channel lining block, thereby ensuring the uniformity of the produced material and avoiding the presence of gaps in the pipe due to uneven material flow during the production process;

[0013] (2) The inner core of the inner mold is evenly provided with heating resistance wires, and the heating resistance wires inside the inner core are evenly arranged close to the outer wall of the inner core of the inner mold. The outer mold sleeve and the inner core of the inner mold are heated in two directions at the same time through the internal heating resistance wires, so that efficient pipe production can be achieved;

[0014] (3) The double hot melt mold sleeve adopts an inner and outer double mold design, which heats the inner and outer double molds simultaneously to achieve inner and outer double hot melt molding, which can better improve the production of metal-plastic composite pipes and ensure the uniformity of the entire pipe body of the metal-plastic composite pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the double hot melt mold sleeve of the utility model.

[0016] In the figure: 1. Double hot melt mold sleeve body; 2. External mold sleeve; 3. First injection port; 4. First end fixing block; 5. Bottom sealing plate; 6. Matching mounting base plate; 7. Material channel; 8. Second injection port; 9. Second end fixing block; 10. Feeding port; 11. Internal mold core; 12. Channel lining block. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1 The utility model provides a technical solution: a double hot melt mold sleeve of a metal-plastic composite pipe, comprising a double hot melt mold sleeve body 1, an external mold sleeve 2 is arranged on the double hot melt mold sleeve body 1, an internal mold core 11 is arranged at the center of the external mold sleeve 2, a material channel 7 is arranged between the external mold sleeve 2 and the internal mold core 11, a first injection port 3 is arranged on one side of the external mold sleeve 2, and a second injection port 8 is arranged on the other side of the external mold sleeve 2, and the first injection port 3 and the second injection port 8 are both connected with the material channel 7.

[0019] One end of the external mold sleeve 2 and the internal mold core 11 is provided with a bottom sealing plate 5 and a matching installation bottom plate 6, and the other end of the external mold sleeve 2 and the internal mold core 11 is provided with a first end fixing block 4, and the outside of the first end fixing block 4 is provided with a second end fixing block 9, and one end of the second end fixing block 9 is matched and installed with the first end fixing block 4 and the internal mold core 11.

[0020] A channel liner 12 is provided at the center of the interior of the second end fixing block 9, one end of the channel liner 12 is cooperated and installed with one end of the internal mold core 11, and a fixing plate is provided on the outside of the other end of the channel liner 12, and a feeding port 10 is provided on one side wall of the second end fixing block 9. The feeding port 10 is connected to the material channel inside the second end fixing block 9. The feeding port 10 can be used to feed the pipes between the material channels between the second end fixing block 9 and the channel liner 12, which can ensure the uniformity of the produced materials and avoid the uneven flow of materials in the pipes during the production process, which may cause gaps in the pipes.

[0021] Both the outer mold sleeve 2 and the inner mold core 11 are provided with heating resistance wires. The heating resistance wires inside the outer mold sleeve 2 are evenly arranged and installed close to the inner wall of the outer mold sleeve 2. The inner mold core 11 is evenly provided with heating resistance wires. The heating resistance wires inside the inner mold core 11 are evenly and closely arranged on the outer wall of the inner mold core 11. The outer mold sleeve 2 and the inner mold core 11 achieve simultaneous heating in two directions through the internal heating resistance wires, thereby realizing efficient pipe production.

[0022] The double hot melt mold sleeve adopts an inner and outer double mold design, which heats the inner and outer double molds simultaneously to achieve inner and outer double hot melt molding, which can better improve the production of metal-plastic composite pipes and ensure the uniformity of the entire pipe body of the metal-plastic composite pipe.

[0023] 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 double hot melt mold sleeve for a metal-plastic composite pipe, comprising a double hot melt mold sleeve body (1), characterized in that: The double hot melt mold sleeve body (1) is provided with an external mold sleeve (2), the inner center of the external mold sleeve (2) is provided with an internal mold core (11), one end of the external mold sleeve (2) and the internal mold core (11) is provided with a bottom sealing plate (5) and a matching installation bottom plate (6), the other end of the external mold sleeve (2) and the internal mold core (11) is provided with a first end fixing block (4), the outside of the first end fixing block (4) is provided with a second end fixing block (9), and one end of the second end fixing block (9) is matched and installed with the first end fixing block (4) and the internal mold core (11); A channel liner (12) is provided at the center of the second end fixing block (9), one end of the channel liner (12) is mounted in cooperation with one end of the internal mold core (11), and a fixing plate is provided on the outside of the other end of the channel liner (12).

2. The double hot melt mold sleeve of a metal-plastic composite pipe according to claim 1 is characterized in that: A material channel (7) is provided between the external mold sleeve (2) and the internal mold core (11); a first injection port (3) is provided on one side of the external mold sleeve (2); and a second injection port (8) is provided on the other side of the external mold sleeve (2); the first injection port (3) and the second injection port (8) are both in communication with the material channel (7).

3. The double hot melt mold sleeve of a metal-plastic composite pipe according to claim 1 is characterized in that: A material replenishment port (10) is provided on one side wall of the second end head fixing block (9), and the material replenishment port (10) is communicated with a material channel inside the second end head fixing block (9).

4. The double hot melt mold sleeve of a metal-plastic composite pipe according to claim 1 is characterized in that: The outer mold sleeve (2) and the inner mold core (11) are both provided with heating resistance wires, and the heating resistance wires inside the outer mold sleeve (2) are evenly arranged inside the outer mold sleeve (2) and installed close to the inner wall of the outer mold sleeve (2); The interior of the inner mold core (11) is evenly provided with heating resistance wires, and the heating resistance wires inside the inner mold core (11) are evenly arranged close to the outer wall of the inner mold core (11).

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