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 invention relates to a T-shaped one-machine-double-outlet PVC coating die for thermal insulation pipes. Background Art

[0002] The insulated pipe is suitable for conveying various media within the range of -50℃—150℃. It is widely used in the transportation of centralized heating, cooling and hot oil, as well as thermal insulation and cold preservation projects in greenhouses, cold storages, coal mines, petroleum, chemical industries, etc. The polyurethane insulated pipe is divided into a working steel pipe layer, a polyurethane insulation layer and a high-density polyethylene protective layer from the inside to the outside. However, the existing insulation pipe can only continuously composite the high-density polyethylene protective layer with a single tube. This production is difficult and has high production requirements for equipment in the production of insulation pipes of the same length. Summary of the invention

[0003] The present invention proposes a T-shaped one-machine double-outlet PVC coating mold for thermal insulation pipes, comprising a feed mold, a first extrusion mold and a second extrusion mold, the feed mold is provided with a feed port and a material dividing mold, the material dividing mold is provided with a first outlet and a second outlet, the first outlet is connected to the first extrusion mold, the second outlet is connected to the second extrusion mold, the first extrusion mold and the second extrusion mold are symmetrically arranged, the first extrusion mold is provided with a first outer mold and a first mold core, the first mold core is arranged on the inner side of the first outer mold, a first annular groove diversion flow channel is arranged between the first mold core and the first outer mold, a first through-tube cavity is arranged at the center of the first mold core, and the first annular groove diversion flow channel is communicated with the first through-tube cavity; the second extrusion mold is provided with a second outer mold and a second mold core, the second mold core is arranged on the inner side of the second outer mold, a second annular groove diversion flow channel is arranged between the second mold core and the second outer mold, a second through-tube cavity is arranged at the center of the second mold core, and the second annular groove diversion flow channel is communicated with the second through-tube cavity.

[0004] In one or more embodiments, the first extrusion die is provided with a first die, a first flow channel is provided between the first die and the first die core, and the first flow channel is respectively connected to the first through tube cavity and the first annular groove diversion flow channel.

[0005] In one or more embodiments, a first connecting port is disposed on the first outer mold, a first connecting mold is disposed on the material dividing mold, and the first outlet is located in the first connecting mold and connected to the first connecting port.

[0006] In one or more embodiments, the second extrusion die is provided with a second die, a second flow channel is provided between the second die and the second die core, and the second flow channel is respectively connected to the second through tube cavity and the second annular groove diversion flow channel.

[0007] In one or more embodiments, a second connecting port is disposed on the second outer mold, a second connecting mold is disposed on the material dividing mold, and the second outlet is located in the second connecting mold and connected to the second connecting port.

[0008] In one or more embodiments, the feeding mold includes a feeding front 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 feeding front 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.

[0009] The beneficial effects of the present invention are as follows: PVC feeding is achieved through a feeding die to feed the first extrusion die and the second extrusion die simultaneously, so that multiple extrusions of the same material are achieved and compounded on the pipe, thereby improving production efficiency. The production time required for pipes of the same length can be reduced by multiples, while reducing the production time of a single extrusion production equipment, reducing the wear of the single extrusion equipment, increasing the life of the equipment, and greatly increasing production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of a T-shaped one-machine dual-outlet PVC coating mold for thermal insulation pipes. DETAILED DESCRIPTION

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

[0012] See attached Figure 1 A T-shaped one-machine double-outlet PVC coating die for thermal insulation pipes, comprising a feed die 1, a first extrusion die 2 and a second extrusion die 3, wherein the feed die 1 is provided with a feed port 11 and a material dividing die 12, wherein the material dividing die 12 is provided with a first outlet 13 and a second outlet 14, wherein the first outlet 13 is connected to the first extrusion die 2, wherein the second outlet 14 is connected to the second extrusion die 3, wherein the first extrusion die 2 and the second extrusion die 3 are symmetrically arranged, wherein the first extrusion die 2 is provided with a first outer die 21 and a first die core 22, wherein the first die core 22 is arranged on the inner side of the first outer die 21, and wherein the first die A first annular groove diverter flow channel 23 is arranged between the core 22 and the first outer mold 21, a first through tube cavity 24 is arranged at the center of the first mold core 22, and the first annular groove diverter flow channel 23 is communicated with the first through tube cavity 24; a second outer mold 31 and a second mold core 32 are arranged on the second extrusion mold 3, the second mold core 32 is arranged on the inner side of the second outer mold 31, a second annular groove diverter flow channel 33 is arranged between the second mold core 32 and the second outer mold 31, a second through tube cavity 34 is arranged at the center of the second mold core 32, and the second annular groove diverter flow channel 33 is communicated with the second through tube cavity 34.

[0013] Furthermore, the first extrusion die 2 is provided with a first die 25 , and a first flow channel 26 is provided between the first die 25 and the first die core 22 , and the first flow channel 26 is connected to the first through tube cavity 24 and the first annular groove diversion flow channel 23 , respectively.

[0014] Furthermore, the first outer mold 21 is provided with a first connecting port 211 , the dividing mold 12 is provided with a first connecting mold 15 , and the first outlet 13 is located in the first connecting mold 15 and connected to the first connecting port 211 .

[0015] Furthermore, the second extrusion die 3 is provided with a second die 35 , and a second flow channel 36 is provided between the second die 35 and the second die core 32 , and the second flow channel 36 is connected to the second through tube cavity 34 and the second annular groove diversion flow channel 33 respectively.

[0016] Furthermore, the second outer mold 31 is provided with a second connecting port 311 , the dividing mold 12 is provided with a second connecting mold 16 , and the second outlet 14 is located in the second connecting mold 16 and connected to the second connecting port 311 .

[0017] Furthermore, the feeding mold 1 includes a front feeding mold 17, a T-shaped mold 18, a first connecting mold 15 and a second connecting mold 16. The T-shaped mold 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 to the front feeding mold 17, the first discharging end 182 is connected to the first connecting mold 15, and the second discharging end 183 is connected to the second connecting mold 16. The T-shaped mold 18 is provided with a T-shaped flow channel, and the T-shaped mold 18 is a material dividing mold.

[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 to the first outer die 21, the first die core 22 and the first die 25, and the first rear die 27 is connected to the first outer die 21 and the first die core 22; 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 to the second outer die 31, the second die core 32 and the second die 35, and the second rear die 37 is connected to the second outer die 31 and the second die core 32.

[0019] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only 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" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0024] The above-mentioned preferred implementation modes should be regarded as illustrative examples of the implementation modes of the present application scheme. Any technical deductions, replacements, improvements, etc. that are identical or similar to the present application scheme or made based on this scheme should be regarded as within the scope of protection of this patent.

Claims

1. A T-shaped one-machine double-outlet PVC coating mold for thermal insulation pipes, characterized in that: It includes a feed die, a first extrusion die and a second extrusion die, the feed die is provided with a feed port and a dividing die, the dividing die is provided with a first outlet and a second outlet, the first outlet is connected to the first extrusion die, the second outlet is connected to the second extrusion die, the first extrusion die and the second extrusion die are symmetrically arranged, the first extrusion die is provided with a first outer die and a first die core, the first die core is arranged on the inner side of the first outer die, a first annular groove diversion channel is arranged between the first die core and the first outer die, a first through tube cavity is arranged at the center of the first die core, and the first annular groove diversion channel is communicated with the first through tube cavity; the second extrusion die is provided with a second outer die and a second die core, the second die core is arranged on the inner side of the second outer die, a second annular groove diversion channel is arranged between the second die core and the second outer die, a second through tube cavity is arranged at the center of the second die core, and the second annular groove diversion channel is communicated with the second through tube cavity.

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

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

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

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

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

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