An open hot runner flow guide shuttle

Abstract

The utility model discloses an open hot runner flow guide shuttle, comprising a shuttle body structure, wherein the internal thread of the shuttle body structure is provided with a heating mechanism, the top thread of the shuttle body structure is connected with a feeding structure, the shuttle body structure comprises a flow guide shuttle main body, the internal thread of the flow guide shuttle main body is connected with a mounting block, a core rod is fixedly installed at the bottom of the mounting block, the gap between the flow guide shuttle main body and the core rod is filled with magnesium oxide powder, a quick connection hole is fixedly installed at the top of the mounting block, the flow guide shuttle main body is heated by a heating wire, and the position of the core rod is fixed by the core rod support to prevent the core rod from deforming under high-temperature working conditions, thereby ensuring the normal and stable operation of the heating mechanism, and the gap between the heating wire and the flow guide shuttle main body is filled with magnesium oxide powder to ensure insulation between the heating wire and the flow guide shuttle main body, and the heat generated by the heating wire can be quickly transferred to the inner wall of the flow guide shuttle main body, and further transferred to the heated medium.

Description

Technical Field

[0001] The utility model relates to the technical field of hot runner flow guide shuttles, in particular to an open hot runner flow guide shuttle. Background Art

[0002] Hot runner systems are generally used in injection molds. They use heating methods to ensure that the plastics in the runners and gates remain in a molten state. Hot runner systems are generally composed of hot nozzles, manifolds, temperature control boxes and accessories. Hot nozzles generally include two types: open hot nozzles and needle valve hot nozzles. Since the form of the hot nozzle directly determines the selection of the hot runner system and the manufacture of the mold, the hot runner system is often divided into open hot runner systems and needle valve hot runner systems.

[0003] The hot nozzle of the open hot runner system adopts a straight-through guide shuttle, which has excellent color changing ability and can achieve good injection molding effects for large products or small high-density engineering plastic molds and HDPE or other plastics with poor fluidity. After searching the prior art, it is found that the open hot runner guide shuttle usually does not have a heating mechanism. In actual production, there is a problem that the molten plastic cannot remain in a molten state when passing through the guide shuttle, and is easily cooled and solidified in the flow channel, resulting in obstruction of melt flow and even blockage of the flow channel, affecting the normal injection molding process. Utility Model Content

[0004] The utility model aims to provide an open hot runner guide shuttle, which has the advantage of an integrated heating structure to keep the plastic in a molten state, thereby solving the problem that the plastic is easily cooled and solidified in the runner, resulting in obstruction of melt flow and even blockage of the runner, affecting the normal injection molding process.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an open hot runner guide shuttle, comprising a shuttle body structure, the internal thread of the shuttle body structure is installed with a heating mechanism, the top thread of the shuttle body structure is connected with a feeding structure, the shuttle body structure comprises a guide shuttle body, characterized in that: the internal thread of the guide shuttle body is connected with a mounting block, the bottom of the mounting block is fixedly installed with a core rod, the bottom of the mounting block is fixedly installed with a heating wire, the heating wire sleeve is installed on the surface of the core rod, the gap between the guide shuttle body and the core rod is filled with magnesium oxide powder, the top of the mounting block is fixedly installed with a quick connection hole, and the bottom of the guide shuttle body is fixedly installed with a temperature sensor.

[0006] As a preferred open hot runner guide shuttle of the utility model, the feed structure includes a feed shell, a quick connector is fixedly installed on one side of the feed shell, three groups of discharge holes are opened at the bottom of the feed shell, and the discharge holes are fixedly connected to the top of the guide hole.

[0007] As a preferred open hot runner flow guide shuttle of the utility model, the outer wall of the flow guide shuttle body is provided with three groups of flow guide holes, the cross section of the flow guide holes is fan-shaped, and the three groups of flow guide holes are axially evenly distributed with the axis of the mounting block as the center.

[0008] As a preferred open hot runner flow guide shuttle of the utility model, a discharge end is fixedly installed at the bottom of the flow guide shuttle body, and a threaded connector is fixedly installed at the top of the flow guide shuttle body.

[0009] As a preferred embodiment of the open hot runner guide shuttle of the utility model, the core rod is made of magnesium oxide.

[0010] As a preferred open hot runner guide shuttle of the utility model, a connecting thread is provided at the bottom of the feed shell, and a sealing ring is fixedly installed at the bottom of the feed shell.

[0011] As a preferred open hot runner flow guide shuttle of the utility model, the flow guide shuttle body is made of nickel-based alloy, and the body of the discharge end is conical.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model heats the guide shuttle body through the heating wire, and fixes the position of the core rod through the core rod support, so as to prevent the core rod from deforming under high-temperature working conditions, ensure the normal and stable operation of the heating mechanism, and fill the gap between the heating wire and the guide shuttle body through magnesium oxide powder to ensure the insulation between the heating wire and the guide shuttle body, and can quickly transfer the heat generated by the heating wire to the inner wall of the guide shuttle body, and further transfer it to the heated medium. At the same time, the heating mechanism is conveniently connected to the external control terminal through the quick connection hole, and the melt temperature is detected by the temperature sensor, and the temperature of the heating mechanism is adjusted through the external control terminal connected to the quick connection hole. It has the advantage of keeping the plastic in a molten state with an integrated heating structure, and solves the problem that the plastic is easily cooled and solidified in the flow channel, resulting in obstruction of the melt flow, even blocking the flow channel, and affecting the normal injection molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the shuttle body structure of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the feeding structure of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the heating mechanism of the utility model.

[0018] In the figure: 1. shuttle body structure; 101. guide shuttle body; 102. guide hole; 103. discharge end; 104. threaded connector; 2. feed structure; 201. feed shell; 202. quick connector; 203. connecting thread; 204. discharge hole; 205. sealing ring; 3. heating mechanism; 301. mounting block; 302. core rod; 303. heating wire; 304. magnesium oxide powder; 305. quick connection hole; 306. temperature sensor. DETAILED DESCRIPTION

[0019] See also Figure 1-4 , an open hot runner flow guide shuttle, comprising a shuttle structure 1, the internal thread of the shuttle structure 1 is installed with a heating mechanism 3, the top of the shuttle structure 1 is threadedly connected with a feeding structure 2, the shuttle structure 1 comprises a flow guide shuttle body 101, the internal thread of the flow guide shuttle body 101 is connected with a mounting block 301, a core rod 302 is fixedly installed at the bottom of the mounting block 301, a heating wire 303 is fixedly installed at the bottom of the mounting block 301, the heating wire 303 is sleeved and installed on the surface of the core rod 302, the gap between the flow guide shuttle body 101 and the core rod 302 is filled with magnesium oxide powder 304, a quick connection hole 305 is fixedly installed at the top of the mounting block 301, and a temperature sensor 306 is fixedly installed at the bottom of the flow guide shuttle body 101;

[0020] During use, the guide shuttle body 101 is heated by the heating wire 303, and the position of the core rod 302 is supported and fixed by the core rod 302 to prevent the core rod 302 from deforming under high-temperature working conditions, thereby ensuring the normal and stable operation of the heating mechanism 3. The gap between the heating wire 303 and the guide shuttle body 101 is filled with magnesium oxide powder 304 to ensure insulation between the heating wire 303 and the guide shuttle body 101, and the heat generated by the heating wire 303 can be quickly transferred to the inner wall of the guide shuttle body 101, and further transferred to the heated medium. At the same time, the heating mechanism 3 is conveniently connected to the external control terminal through the quick connection hole 305, and the melt temperature is detected by the temperature sensor 306, and the temperature of the heating mechanism 3 is adjusted through the external control terminal connected to the quick connection hole 305. The integrated heating structure has the advantage of keeping the plastic in a molten state, thereby solving the problem that the plastic is easily cooled and solidified in the flow channel, resulting in obstruction of the melt flow, even blocking the flow channel, and affecting the normal injection molding process.

[0021] Furthermore, the feed structure 2 includes a feed shell 201, a quick connector 202 is fixedly installed on one side of the feed shell 201, and three groups of discharge holes 204 are opened at the bottom of the feed shell 201, and the discharge holes 204 are fixedly connected to the top of the guide hole 102;

[0022] During use, the device is conveniently connected to the feed end through the quick connector 202 , and the molten material passes through the inside of the feed shell 201 and then is uniformly input into the inside of the guide hole 102 through the discharge hole 204 .

[0023] Furthermore, the outer wall of the guide shuttle body 101 is provided with three groups of guide holes 102, the cross section of the guide holes 102 is fan-shaped, and the three groups of guide holes 102 are evenly distributed axially with the axis of the mounting block 301 as the center;

[0024] During use, the fan-shaped guide holes 102 can provide a relatively gentle flow rate change. Compared with the flow channel design with right-angle turns or sharp contractions, it can reduce the shear stress of the melt during the flow process, thereby reducing possible molecular chain breakage and internal stress of the product. The spiral guide holes 102 can slow down the flow rate of the fluid by increasing the stroke length of the fluid, so that it can remain in a molten state in the groove for more time, which helps to improve the filling effect and product quality. The three groups of guide holes 102 can reasonably distribute the flow rate of the molten plastic according to the number and layout, ensuring the filling speed and pressure balance of each cavity, thereby improving the dimensional accuracy and appearance consistency of the product.

[0025] Furthermore, a discharge end 103 is fixedly installed at the bottom of the guide shuttle body 101, and a threaded connector 104 is fixedly installed at the top of the guide shuttle body 101;

[0026] During use, the threaded connector 104 facilitates installation and disassembly of the feeding structure 2 and the heating mechanism 3, and is convenient for workers to perform maintenance and cleaning of the components.

[0027] Further, the core rod 302 is made of magnesium oxide;

[0028] During use, the core rod 302 made of magnesium oxide ensures the insulation of the core rod 302 and acts as a good thermal conductive medium to help heat transfer effectively.

[0029] Furthermore, a connecting thread 203 is provided at the bottom of the feed shell 201, and a sealing ring 205 is fixedly installed at the bottom of the feed shell 201;

[0030] During use, the device and the hot runner are conveniently connected to each other through the connecting thread 203, making the device easy to assemble, and the gap between the feed shell 201 and the hot runner is sealed by the sealing ring 205 to ensure that the guide shuttle is tightly connected to the hot nozzle, the diverter plate or other parts of the mold to prevent melt leakage and external impurities from intruding.

[0031] Furthermore, the guide shuttle body 101 is made of nickel-based alloy, and the body of the discharge end 103 is conical;

[0032] The guide shuttle body 101 is made of nickel-based alloy, which ensures that the guide shuttle body 101 can maintain good strength, creep resistance and corrosion resistance at high temperatures during use, and is suitable for hot runner systems under extreme temperatures and harsh environments. The conical shuttle body structure 1 can gradually reduce the cross-sectional area of ​​the flow channel during use, so that the resistance encountered by the melt during the flow process is gradually reduced, which is conducive to the smooth flow of the melt and avoids flow stagnation or excessive shear stress caused by sudden narrowing.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An open hot runner flow guide shuttle, comprising a shuttle structure (1), wherein the internal thread of the shuttle structure (1) is provided with a heating mechanism (3), the top of the shuttle structure (1) is threadedly connected with a feed structure (2), and the shuttle structure (1) comprises a flow guide shuttle body (101), characterized in that: The guide shuttle body (101) is internally threadedly connected to a mounting block (301), a core rod (302) is fixedly mounted on the bottom of the mounting block (301), a heating wire (303) is fixedly mounted on the bottom of the mounting block (301), the heating wire (303) is sleeved and mounted on the surface of the core rod (302), a gap between the guide shuttle body (101) and the core rod (302) is filled with magnesium oxide powder (304), a quick connection hole (305) is fixedly mounted on the top of the mounting block (301), and a temperature sensor (306) is fixedly mounted on the bottom of the guide shuttle body (101).

2. The open hot runner flow guide shuttle according to claim 1, characterized in that: The feed structure (2) comprises a feed shell (201), a quick connector (202) is fixedly mounted on one side of the feed shell (201), three groups of discharge holes (204) are provided at the bottom of the feed shell (201), and the discharge holes (204) are fixedly connected to the top of the guide hole (102).

3. The open hot runner flow guide shuttle according to claim 1, characterized in that: The outer wall of the flow-guiding shuttle body (101) is provided with three groups of flow-guiding holes (102), the cross-section of the flow-guiding holes (102) is fan-shaped, and the three groups of flow-guiding holes (102) are evenly distributed axially with the axis of the mounting block (301) as the center.

4. The open hot runner flow guide shuttle according to claim 1, characterized in that: A discharge end (103) is fixedly mounted on the bottom of the flow-guiding shuttle body (101), and a threaded connector (104) is fixedly mounted on the top of the flow-guiding shuttle body (101).

5. The open hot runner flow guide shuttle according to claim 1, characterized in that: The core rod (302) is made of magnesium oxide.

6. The open hot runner flow guide shuttle according to claim 2, characterized in that: A connecting thread (203) is provided at the bottom of the feed shell (201), and a sealing ring (205) is fixedly mounted at the bottom of the feed shell (201).

7. The open hot runner flow guide shuttle according to claim 1, characterized in that: The guide shuttle body (101) is made of nickel-based alloy, and the body of the discharge end (103) is conical.

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