Three-machine three-layer pipe spiral hot oil temperature control high-speed extrusion die
By designing a three-machine three-layer pipe spiral thermal oil temperature controlled high-speed extrusion mold, the problems of slow heat dissipation and excessive melt temperature in pipe production are solved, and uniform distribution and low-pressure extrusion of the pipe are achieved, which improves production efficiency and avoids sagging.
Patent Information
- Application Number
- CN202421807832.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-29
AI Technical Summary
When producing three-machine three-layer pipes, due to the large diameter and high thickness of the product, the heat dissipation is slow, which affects the production progress. In addition, the melt temperature is too high at high speed, which is prone to melting sagging.
A three-machine three-layer pipe spiral thermal oil temperature controlled high-speed extrusion die is designed, including front die, spiral distributor, expansion die and rear die. The mold achieves uniform distribution of the pipe and low-pressure extrusion through the multi-point uniform distribution of the spiral distributor and controls the oil temperature of the spiral disc copper tube in the expansion mold, while controlling the melt temperature.
The uniform distribution and low-pressure extrusion of PE materials are achieved, the extrusion efficiency is improved, the melt temperature is reduced, and the melt sagging phenomenon is avoided, so that large diameter and super thick three-layer PE pipe products can be produced at high speed.
Smart Images
Figure CN223013841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a three-machine three-layer pipe spiral hot oil temperature-controlled high-speed extrusion die. Background Art
[0002] When producing a 1600-diameter PE three-machine three-layer pipe, due to the large diameter and high thickness of the product, the heat dissipation during production is slow, which affects the production progress. Moreover, for ultra-thick pipes, the melt temperature is too high at high speeds, resulting in the phenomenon of melt sag. Summary of the Utility Model
[0003] The utility model provides a three-machine three-layer pipe spiral hot oil temperature-controlled high-speed extrusion die, which includes a front die, a spiral distributor, an expansion die and a rear die. The front die is connected to the spiral distributor, and the spiral distributor is provided with a plurality of feeding ports. The expansion die is connected to the spiral distributor, and the expansion die is provided with a cooling cavity. A coil pipe is arranged on the cooling cavity, and a heat exchange liquid is arranged in the coil pipe.
[0004] In one or more embodiments, the expansion die is provided with an expansion flow channel, and the cooling cavity is located on the inner wall of the expansion flow channel.
[0005] In one or more embodiments, the spiral distributor is provided with an outer layer feeding port, an intermediate layer feeding port and an inner layer feeding port. The outer layer feeding port is connected to an outer layer channel, the intermediate layer feeding port is connected to an intermediate layer channel, and the inner layer feeding port is connected to an inner layer channel.
[0006] In one or more embodiments, the expansion die is provided with a converging material channel, and the converging material channel is respectively connected to the outer layer channel, the intermediate layer channel and the inner layer channel.
[0007] In one or more embodiments, the rear die is connected to the expansion die, and the rear die is provided with an extrusion channel.
[0008] The beneficial effects of the utility model are as follows: The PE material is evenly distributed at multiple points on the circumference of the die through three different spiral distributors. After passing through the converging section, large-diameter low-pressure extrusion is achieved through the expansion plate, making the low-pressure extrusion distribution of the PE material on the circumference more uniform, and having the characteristic of low extrusion pressure. The temperature of the melt is controlled by the spiral copper pipe in the expansion die, which accelerates the cooling of the extruded pipe body and the inside of the pipe, improves the extrusion efficiency, realizes the extrusion mode of high-speed extrusion and low melt temperature, effectively reduces the phenomenon of melt sag caused by too high melt temperature at high speeds for ultra-thick pipes, and thus realizes the production of large-diameter ultra-thick three-layer PE pipe products at high speed. Description of the Drawings
[0009] Figure 1 It is a schematic diagram of a three-machine three-layer pipe spiral hot oil temperature-controlled high-speed extrusion die. Detailed Embodiments
[0010] The following further describes the solution of this application in conjunction with the accompanying drawings:
[0011] See the attached Figure 1 A three-machine three-layer pipe spiral hot oil temperature-controlled high-speed extrusion die includes a front die 1, a spiral distributor 2, an expansion die 3, and a rear die 4. The front die 1 is connected to the spiral distributor 2. The spiral distributor 2 is provided with a plurality of feed ports. The expansion die 3 is connected to the spiral distributor 2. The expansion die 3 is provided with a cooling chamber 31. A coil pipe 32 is arranged on the cooling chamber 31. A heat exchange liquid is arranged in the coil pipe 32, and the heat exchange liquid is heat exchange oil.
[0012] Furthermore, the expansion die 3 is provided with an expansion flow channel 34, and the cooling chamber 31 is located on the inner wall of the expansion flow channel 34.
[0013] Furthermore, the spiral distributor 2 is provided with an outer layer feed port 21, an intermediate layer feed port 22, and an inner layer feed port 23. The outer layer feed port 21 is connected to an outer layer channel 24. The intermediate layer feed port 22 is connected to an intermediate layer channel 25. The inner layer feed port 23 is connected to an inner layer channel 26.
[0014] Furthermore, the expansion die 3 is provided with a collecting material channel 35, and the collecting material channel 35 is respectively connected to the outer layer channel 24, the intermediate layer channel 25, and the inner layer channel 26.
[0015] Furthermore, the rear die 4 is connected to the expansion die 3, and the rear die 4 is provided with an extrusion channel 41.
[0016] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present invention.
[0017] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.
[0018] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0019] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher level than the second feature in terms of horizontal height. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature in terms of horizontal height.
[0020] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0021] The above preferred embodiments should be regarded as illustrative examples of the implementation modes of the present application. Any technical deductions, substitutions, improvements, etc. that are identical, similar to, or based on the present application should be regarded as within the protection scope of this patent.
Claims
1. A three-machine three-layer pipe spiral hot oil temperature controlled high-speed extrusion die, characterized in that: It includes a front mold, a spiral distributor, an expansion mold and a rear mold, the front mold is connected to the spiral distributor, the spiral distributor is provided with multiple feed ports, the expansion mold is connected to the spiral distributor, the expansion mold is provided with a cooling chamber, the cooling chamber is provided with a coil, and the coil is provided with a heat exchange liquid.
2. The three-machine three-layer pipe spiral hot oil temperature controlled high-speed extrusion die according to claim 1 is characterized in that: The expansion mold is provided with an expansion channel, and the cooling cavity is located on the inner wall of the expansion channel.
3. The three-machine three-layer pipe spiral hot oil temperature controlled high-speed extrusion die according to claim 1 is characterized in that: The spiral distributor is provided with an outer layer feed port, a middle layer feed port and an inner layer feed port, the outer layer feed port is connected to the outer layer channel, the middle layer feed port is connected to the middle channel, and the inner layer feed port is connected to the inner layer channel.
4. The three-machine three-layer pipe spiral hot oil temperature controlled high-speed extrusion die according to claim 3 is characterized in that: The expansion die is provided with a collecting channel, and the collecting channel is respectively connected to the outer channel, the middle channel and the inner channel.
5. The three-machine three-layer pipe spiral hot oil temperature controlled high-speed extrusion die according to claim 1 is characterized in that: The rear die is connected to the expansion die, and an extrusion channel is arranged on the rear die.