Novel conical double-confluence core

Abstract

The utility model discloses a novel conical double-confluence core which is characterized in that a runner is arranged in the center in a confluence core body, two ends of the runner are integrally communicated with a feeding component and a discharging component respectively, and a mold closing end is arranged at the outer end of the feeding component; the output cavity is connected with the flow guide block, a plurality of outer-layer flow guide holes and inner-layer flow guide holes are evenly distributed in the flow guide block at intervals, the outer ends of the outer-layer flow guide holes and the outer ends of the inner-layer flow guide holes are communicated with different discharging channels, and the discharging channels of the outer-layer flow guide holes and the discharging channels of the inner-layer flow guide holes are not communicated in the flow guide block and are arranged in a reverse staggered mode. When normal materials flow in from the runner through the inner-layer flow guide hole and flow out from the outer-layer discharging channel to the surface of a material blank, the normal materials are mixed in a reversing mode through the outer-layer flow guide hole and the inner-layer flow guide hole; and the coke material on the outer surface flows to the inner layer of the material blank through the outer-layer flow guide holes, so that coke material impurities and generation of gray lines and black lines are prevented, the plasticizing stability of the material is improved, and the waste of the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe production equipment, in particular to a novel cone double confluence core. Background Art

[0002] In the fields of plastics processing and injection molding, material overheating has always been a key factor affecting product quality. Traditional converging core designs lack precise temperature control, leading to material degradation at high temperatures and compromising product appearance and performance. Furthermore, friction between the screw and barrel can cause material discoloration, resulting in gray streaks and black lines, further impacting product aesthetics and market competitiveness. Improper handling often results in significant production waste. Impurities and sticking are primarily caused by high material temperatures within the screw that cannot be cooled. In twin-screw extruders, the melt pressure increases after the converging core converges. Even when external heating is stopped in the barrel's fourth zone and converging core, high shear and friction can still cause temperatures to rise in these zones and the converging core, leading to high-temperature decomposition of the material. Gray streaks and black lines are primarily caused by friction between the screw and the barrel wall during operation, resulting in metal-to-metal friction that discolors the material and creates gray streaks. Typically, a large number of products with substandard appearances must be produced to allow the screw to be ground and properly integrated before normal production can begin, resulting in significant production costs. Utility Model Content

[0003] The purpose of the utility model is to provide a novel conical double confluence core, which effectively solves the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present utility model provides the following technical solutions.

[0005] A new type of conical double confluence core, including a confluence core body, a flow channel, a feed assembly, a discharge assembly and a clamping end, a flow channel is provided in the center of the confluence core body, and the two ends of the flow channel are respectively connected with the feed assembly and the discharge assembly as a whole, and the outer end of the feed assembly is provided with a clamping end; the discharge assembly includes an output cavity, a guide block, an outer layer guide hole, an inner layer guide hole and a discharge channel, the output cavity is connected to the guide block, and a plurality of outer layer guide holes and inner layer guide holes are evenly and spaced apart in the guide block, the outer ends of the outer layer guide holes and the inner layer guide holes are connected with different discharge channels, the discharge channel of the outer layer guide hole and the discharge channel of the inner layer guide hole are not connected in the guide block and are arranged in reverse and staggered manner.

[0006] Preferably, the feed assembly is two input cavities arranged in parallel, and the sides of the two input cavities are tangent and connected.

[0007] Preferably, a plurality of groups of annular heat dissipation grooves are evenly arranged on the surface of the confluence core body, and a temperature detection hole is provided between the two middle groups of annular heat dissipation grooves.

[0008] Preferably, a melt pressure detection port is provided on a side of the flow channel close to the output cavity, and the melt pressure detection port is communicated with the outside of the confluence core body.

[0009] Preferably, the output cavity is a tapered cavity whose diameter gradually increases along the fluid outflow direction.

[0010] Preferably, the input cavity is a tapered cavity whose diameter gradually decreases along the fluid inflow direction.

[0011] Preferably, the mold closing end includes a mold closing positioning groove and a mold closing guide groove, the mold closing positioning groove is provided on the confluence core body, and the mold closing positioning groove and the input cavity are both connected to the mold closing guide groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) The utility model is provided with a flow channel in the center of the confluence core body, and the two ends of the flow channel are connected to the feed component and the discharge component respectively, and the outer end of the feed component is provided with a clamping end; the discharge component includes an output cavity, a guide block, an outer guide hole, an inner guide hole and a discharge channel, the output cavity is connected to the guide block, and a plurality of outer guide holes and inner guide holes are evenly and spaced apart in the guide block, and the outer ends of the outer guide holes and the inner guide holes are connected to different discharge channels, and the discharge of the outer guide hole is connected to the discharge of the outer guide hole. The channel and the discharge channel of the inner guide hole are not connected in the guide block and are arranged in reverse and staggered manner, so that the material that is discolored by the friction of the screw and the barrel is mixed in reverse through the outer guide hole and the inner guide hole. When normal material flows from the flow channel through the inner guide hole and flows out from the outer discharge channel to the surface of the billet; the coke material on the outer surface flows to the inner layer of the billet through the outer guide hole, so as to prevent the impurities in the coke material and the generation of gray grains and black lines, improve the stability of material plasticization, and reduce the waste of production costs.

[0014] (2) The utility model evenly arranges multiple groups of annular heat dissipation grooves on the surface of the confluence core body, and a temperature detection hole is provided between the two middle groups of annular heat dissipation grooves. A fan can be installed on the outside of the confluence core body. When the fan is started, the heat dissipation area is increased due to the effect of the heat dissipation grooves, which can quickly take away the heat inside the confluence core body, effectively control the material temperature, prevent overheating, and thus avoid the material temperature being too high and degrading the paste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 3 It is a partial cross-sectional view of the utility model;

[0018] Figure 4It is a side view of the present utility model. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figures 1 to 4 As shown, a new type of conical double confluence core includes a confluence core body 1, a flow channel 2, an output cavity 3, a guide block 4, an outer guide hole 5, an inner guide hole 6, a discharge channel 7, an input cavity 8, a heat dissipation groove 9, a temperature detection hole 10, a melt pressure detection port 11, a mold positioning groove 12 and a mold guide groove 13.

[0021] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 4 As shown, a flow channel 2 is provided in the center of the confluence core body 1, and the two ends of the flow channel 2 are respectively connected with the feed assembly and the discharge assembly. A clamping end is provided at the outer end of the feed assembly. Specifically, the clamping end includes a clamping positioning groove 12 and a clamping guide groove 13. A clamping positioning groove 12 is provided on the confluence core body 1, and the clamping positioning groove 12 and the input cavity 8 are both connected with the clamping guide groove 13, which is convenient for installation with the extruder.

[0024] The discharge assembly includes an output cavity 3, a guide block 4, an outer guide hole 5, an inner guide hole 6 and a discharge channel 7. The output cavity 3 is a tapered cavity whose diameter gradually increases along the outflow direction of the fluid, so as to avoid the material from being accumulated in the flow channel 2 when being output, and to disperse the material quickly and effectively. The output cavity 3 is connected to the guide block 4. A plurality of outer guide holes 5 and inner guide holes 6 are evenly and spaced apart in the guide block 4. The outer ends of the outer guide holes 5 and the inner guide holes 6 are connected to different discharge channels 7. The discharge channel of the outer guide hole 5 is connected to the discharge channel 7. The discharge channel 7 of the flow channel 7 and the inner guide hole 6 are not connected in the guide block 4 and are arranged in an opposite staggered manner, so that the material discolored by the friction of the screw and the barrel is mixed in reverse through the outer guide hole 5 and the inner guide hole 6. When the normal material flows from the flow channel through the inner guide hole 6 and flows out from the outer discharge channel 7 to the surface of the billet; the char material on the outer surface flows through the outer guide hole 5 to the inner layer of the billet, so as to prevent char material impurities and the generation of gray lines and black lines, improve the stability of material plasticization, and reduce the waste of production costs.

[0025] The feed assembly comprises two input cavities 8 arranged in parallel, the sides of the two input cavities 8 are tangent to each other and are connected, and the input cavity 8 is a tapered cavity whose diameter gradually decreases along the direction of fluid inflow.

[0026] A plurality of groups of annular heat dissipation grooves 9 are evenly arranged on the surface of the confluence core body 1, and a temperature detection hole 10 is provided between the two middle groups of annular heat dissipation grooves 9. A fan can be installed on the outside of the confluence core body. When the fan is started, the heat dissipation area is increased due to the effect of the heat dissipation grooves, which can quickly take away the heat inside the confluence core body, effectively control the material temperature, prevent overheating, and thus avoid the material temperature being too high and degrading the paste.

[0027] A melt pressure detection port 11 is provided on one side of the flow channel 2 close to the output cavity 3. The melt pressure detection port 11 is communicated with the outside of the confluence core body 1 to monitor the melt pressure of the material and ensure that the material flows under appropriate pressure.

[0028] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of rights of the present invention. Therefore, modifications, equivalent changes, improvements, etc. made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A new type of conical double confluence core, characterized by: The invention comprises a confluence core body (1), a flow channel (2), a feed assembly, a discharge assembly and a clamping end, wherein a flow channel (2) is provided in the center of the confluence core body (1), and both ends of the flow channel (2) are integrally connected with the feed assembly and the discharge assembly respectively, and a clamping end is provided at the outer end of the feed assembly; the discharge assembly comprises an output cavity (3), a guide block (4), an outer layer guide hole (5), an inner layer guide hole (6) and a discharge channel (7), wherein the output cavity (3) is connected with the guide block (4), and a plurality of outer layer guide holes (5) and inner layer guide holes (6) are evenly and spaced apart in the guide block (4), and the outer ends of the outer layer guide holes (5) and the inner layer guide holes (6) are both connected with different discharge channels (7), and the discharge channels (7) of the outer layer guide holes (5) and the discharge channels (7) of the inner layer guide holes (6) are not connected in the guide block (4) and are arranged in reverse and staggered manner.

2. The novel conical double confluence core according to claim 1, characterized in that: The feed assembly comprises two input cavities (8) arranged in parallel, and the sides of the two input cavities (8) are tangent to each other and are in communication.

3. The novel conical double confluence core according to claim 2, characterized in that: The surface of the confluence core body (1) is evenly provided with a plurality of groups of annular heat dissipation grooves (9), and a temperature detection hole (10) is provided between two middle groups of annular heat dissipation grooves (9).

4. The novel conical double confluence core according to claim 3, characterized in that: A melt pressure detection port (11) is provided on one side of the flow channel (2) close to the output cavity (3), and the melt pressure detection port (11) is communicated with the outside of the confluence core body (1).

5. A novel conical double confluence core according to claim 3 or 4, characterized in that: The output cavity (3) is a tapered cavity whose diameter gradually increases along the fluid outflow direction.

6. A novel conical double confluence core according to claim 3 or 4, characterized in that: The input cavity (8) is a tapered cavity whose diameter gradually decreases along the fluid inflow direction.

7. The novel conical double confluence core according to claim 5, characterized in that: The mold closing end comprises a mold closing positioning groove (12) and a mold closing guide groove (13); the mold closing positioning groove (12) is provided on the confluence core body (1); the mold closing positioning groove (12) and the input cavity (8) are both connected to the mold closing guide groove (13).

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