Thermal insulation pipe T-shaped one-machine double-outlet PVC coating mold

Abstract

The T-shaped one-machine double-outlet PVC coating die comprises a feeding die, a first extrusion die and a second extrusion die, the feeding die is provided with a feeding port and a material distributing die, the material distributing die is provided with a first outlet and a second outlet, the first outlet is connected with the first extrusion die, and the second outlet is connected with the second extrusion die. The first extrusion die and the second extrusion die are symmetrically arranged, a first outer die and a first die core are arranged on the first extrusion die, the first die core is arranged on the inner side of the first outer die, a first annular groove flow dividing runner is arranged between the first die core and the first outer die, and a first through pipe cavity is formed in the center of the first die core; the first ring groove shunting flow channel is communicated with the first through pipe cavity; a second outer die and a second die core are arranged on the second extrusion die, the second die core is arranged on the inner side of the second outer die, a second annular groove flow dividing runner is arranged between the second die core and the second outer die, a second through pipe cavity is formed in the center of the second die core, and the second annular groove flow dividing runner is communicated with the second through pipe cavity.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of T-shaped one-machine double-out PVC coating mould of thermal insulation pipe. BACKGROUND

[0002] The thermal insulation pipe is suitable for conveying various media in the range of-50 ℃-150 ℃, and is widely used in the thermal insulation and cooling engineering of central heating, cooling and hot oil conveying, warm room, cold storage, coal mine, petroleum and chemical industry; the polyurethane thermal insulation pipe is divided into working steel pipe layer, polyurethane insulation layer and high-density polyethylene protective layer from inside to outside, but the existing thermal insulation pipe can only continuously composite high-density polyethylene protective layer for single pipe when compositing high-density polyethylene protective layer, which has high production difficulty and high production requirement for equipment in the production of thermal insulation pipes with the same length. SUMMARY

[0003] The utility model provides a kind of T-shaped one-machine double-out PVC coating mould of thermal insulation pipe, including feeding die, first extrusion die and second extrusion die, the feeding die is provided with feed inlet and distribution die, the distribution die is provided with first outlet and second outlet, the first outlet is connected first extrusion die, the second outlet is connected second extrusion die, the first extrusion die and second extrusion die are symmetrically set, first outer die is provided on the first extrusion die, first die core, the first die core is arranged at the inboard of first outer die, first annular groove shunt flow channel is arranged between the first die core and first outer die, first through pipe cavity is provided in the center of the first die core, the first annular groove shunt flow channel is communicated with first through pipe cavity;Second outer die is provided on the second extrusion die, second die core, the second die core is arranged at the inboard of second outer die, second annular groove shunt flow channel is arranged between the second die core and second outer die, second through pipe cavity is provided in the center of the second die core, the second annular groove shunt flow channel is communicated with second through pipe cavity.

[0004] In one or more embodiments, the first extrusion die is provided with first die head, first flow channel is arranged between the first die head and first die core, and the first flow channel is respectively connected with first through pipe cavity and first annular groove shunt flow channel.

[0005] In one or more embodiments, first connecting port is provided on the first outer die, the distribution die is provided with first connecting die, and the first outlet is located in the first connecting die and connected with the first connecting port.

[0006] In one or more embodiments, the second extrusion die is provided with second die head, second flow channel is arranged between the second die head and second die core, and the second flow channel is respectively connected with second through pipe cavity and second annular groove shunt flow channel.

[0007] In one or more embodiments, the second outer die is provided with a second connecting port, the distribution die is provided with a second connecting die, and the second outlet is located in the second connecting die and connected with the second connecting port.

[0008] In one or more embodiments, the feeding die comprises a feeding front die, a T-shaped die, a first connecting die and a second connecting die, the T-shaped die is provided with a feeding end, a first discharging end and a second discharging end, the feeding end is connected with the feeding front die, the first discharging end is connected with the first connecting die, the second discharging end is connected with the second connecting die, and the T-shaped die is provided with a T-shaped flow channel.

[0009] The utility model discloses a beneficial effect: through feeding die realizes PVC feeding while feeding first extrusion die and second die, realizes same material original multiple simultaneous extrusion and compound on tubular product, improves production efficiency, and the production time required for the same length tubular product can be multiple reduction, simultaneously reduces the production time of single extrusion production device, reduces the wear and tear of single extrusion device, improves the life of equipment, greatly increases production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a schematic diagram of the T-shaped one-machine double-out PVC coating die for the thermal insulation pipe. DETAILED DESCRIPTION

[0011] The application scheme is further described as follows in combination with the drawings:

[0012] Referring to the accompanying Figure 1 A T-shaped one-machine double-out PVC coating die for the thermal insulation pipe comprises a feeding die 1, a first extrusion die 2 and a second extrusion die 3, the feeding die 1 is provided with a feeding port 11 and a distribution die 12, the distribution die 12 is provided with a first outlet 13 and a second outlet 14, the first outlet 13 is connected with the first extrusion die 2, the second outlet 14 is connected with the second extrusion die 3, the first extrusion die 2 and the second extrusion die 3 are symmetrically arranged, the first extrusion die 2 is provided with a first outer die 21 and a first die core 22, the first die core 22 is arranged on the inner side of the first outer die 21, a first annular groove flow distribution channel 23 is arranged between the first die core 22 and the first outer die 21, a first through-pipe cavity 24 is arranged at the center of the first die core 22, and the first annular groove flow distribution channel 23 is communicated with the first through-pipe cavity 24; the second extrusion die 3 is provided with a second outer die 31 and a second die core 32, the second die core 32 is arranged on the inner side of the second outer die 31, a second annular groove flow distribution channel 33 is arranged between the second die core 32 and the second outer die 31, a second through-pipe cavity 34 is arranged at the center of the second die core 32, and the second annular groove flow distribution channel 33 is communicated with the second through-pipe cavity 34.

[0013] Further, the first extrusion die 2 is provided with a first die head 25, and a first runner 26 is arranged between the first die head 25 and the first core 22, and the first runner 26 is connected with the first through-pipe cavity 24 and the first ring groove shunt runner 23 respectively.

[0014] Further, the first outer die 21 is provided with a first connecting port 211, the material distribution die 12 is provided with a first connecting die 15, and the first outlet 13 is located in the first connecting die 15 and connected with the first connecting port 211.

[0015] Further, the second extrusion die 3 is provided with a second die head 35, and a second runner 36 is arranged between the second die head 35 and the second core 32, and the second runner 36 is connected with the second through-pipe cavity 34 and the second ring groove shunt runner 33 respectively.

[0016] Further, the second outer die 31 is provided with a second connecting port 311, the material distribution die 12 is provided with a second connecting die 16, and the second outlet 14 is located in the second connecting die 16 and connected with the second connecting port 311.

[0017] Further, the feeding die 1 comprises a feeding front die 17, a T-shaped die 18, a first connecting die 15 and a second connecting die 16, the T-shaped die 18 is provided with a feeding end 181, a first discharging end 182 and a second discharging end 183, the feeding end 181 is connected with the feeding front die 17, the first discharging end 182 is connected with the first connecting die 15, and the second discharging end 183 is connected with the second connecting die 16, and the T-shaped die 18 is provided with a T-shaped runner, and the T-shaped die 18 is a material distribution die.

[0018] Preferably, the first extrusion die 2 is provided with a first front die 28 and a first rear die 27, the first front die 28 is connected with the first outer die 21, the first core 22 and the first die head 25, and the first rear die 27 is connected with the first outer die 21 and the first core 22; and the second extrusion die 3 is provided with a second front die 38 and a second rear die 37, the second front die 38 is connected with the second outer die 31, the second core 32 and the second die head 35, and the second rear die 37 is connected with the second outer die 31 and the second core 32.

[0019] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0020] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0021] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0023] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0024] The above preferred embodiments should be regarded as an illustration of the implementation of the application, and any technical deduction, replacement, improvement and the like made similarly, approximately or based on the above should be regarded as the protection scope of the present patent.

Claims

1. A T-shaped PVC coating mold for thermal insulation pipes, characterized in that, The device includes a feeding die, a first extrusion die, and a second extrusion die. The feeding die has a feed inlet and a distribution die. The distribution die has a first outlet and a second outlet. The first outlet is connected to the first extrusion die, and the second outlet is connected to the second extrusion die. The first and second extrusion dies are symmetrically arranged. The first extrusion die has a first outer die and a first die core. The first die core is located inside the first outer die. A first annular groove diverting flow channel is provided between the first die core and the first outer die. A first through-hole is provided at the center of the first die core, and the first annular groove diverting flow channel communicates with the first through-hole. The second extrusion die has a second outer die and a second die core. The second die core is located inside the second outer die. A second annular groove diverting flow channel is provided between the second die core and the second outer die. A second through-hole is provided at the center of the second die core, and the second annular groove diverting flow channel communicates with the second through-hole.

2. The T-shaped double-outlet PVC coating mold for thermal insulation pipes according to claim 1, characterized in that, The first extrusion die is provided with a first die opening, and a first flow channel is provided between the first die opening and the first die core. The first flow channel is connected to a first through cavity and a first annular groove diversion flow channel.

3. The T-shaped double-outlet PVC coating mold for thermal insulation pipes according to claim 2, characterized in that, The first outer mold is provided with a first connection port, the material distribution mold is provided with a first connecting mold, and the first outlet is located in the first connecting mold and connected to the first connection port.

4. The T-shaped double-outlet PVC coating mold for thermal insulation pipes according to claim 2, characterized in that, The second extrusion die is provided with a second die opening, and a second flow channel is provided between the second die opening and the second die core. The second flow channel is connected to the second through cavity and the second annular groove diversion flow channel respectively.

5. The T-shaped double-outlet PVC coating mold for thermal insulation pipes according to claim 4, characterized in that, The second outer mold is provided with a second connection port, the material distribution mold is provided with a second connection mold, and the second outlet is located in the second connection mold and connected to the second connection port.

6. The T-shaped double-outlet PVC coating mold for thermal insulation pipes according to claim 1, characterized in that, The feeding mold includes a pre-feeding mold, a T-shaped mold, a first connecting mold, and a second connecting mold. The T-shaped mold is provided with a feeding end, a first discharging end, and a second discharging end. The feeding end is connected to the pre-feeding mold, the first discharging end is connected to the first connecting mold, and the second discharging end is connected to the second connecting mold. The T-shaped mold is provided with a T-shaped flow channel.

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