Hot runner sprue bush
By designing a detachable hot runner gate department, the problem of traditional gate department being unable to replace when the mold kernel size deviation is deviated, the effect of rapid replacement and reduced production costs is achieved, and the injection molding efficiency is improved.
Patent Information
- Application Number
- CN202421086813.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-19
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-19
AI Technical Summary
The traditional injection molding gate department cannot be replaced independently when facing the size deviation of the mold kernel, resulting in increased injection molding costs and reduced efficiency.
A hot runner gate division is designed, including a detachable first and second section divisions. Through threaded connections and supporting strips, positioning protrusions and other structures, the gate division is quickly replaced and used.
It is realized that only the second section can be used when the mold kernel deviation is used, which reduces production costs, simplifies structure and maintenance, and improves the convenience and production efficiency of use.
Smart Images
Figure CN222245908U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hot runners, in particular to a hot runner gate. Background Art
[0002] At present, the injection mold commonly used in the injection molding industry is the hot nozzle injection mold. Compared with ordinary molds, the plastic products injected through the hot runner system are of higher quality, and the hot runner system has the advantages of saving raw materials, improving production efficiency, and high degree of automation. With the widespread application of hot runner technology, in the use of hot runners, the size of the mold core may deviate, resulting in the size of the gate being incompatible with the mold core. The traditional injection molding gate hot nozzle and hot runner are fixedly connected. In the case of mold core deviation, the hot nozzle cannot be replaced, and the hot nozzle and hot runner can only be connected and replaced at the same time, which increases the injection molding cost and affects the injection molding efficiency. Utility Model Content
[0003] The utility model aims to provide a hot runner gate to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot runner gate assembly, the gate assembly includes a first section and a second section, the first section and the second section are detachably connected, the first section is used to connect the end of the hot nozzle, the first section is provided with a first connecting portion, the second section is provided with a second connecting portion, and the second connecting portion is sleeved with the first connecting outer wall.
[0005] Preferably, an outer wall of the first connecting part is provided with an external thread, an inner wall of the second connecting part is provided with an internal thread, and the first connecting part and the second connecting part are threadedly connected.
[0006] Preferably, a support bar is provided at the upper end of the first connecting portion, and the outer diameter of the support bar is greater than the outer diameter of the first section.
[0007] Preferably, a positioning protrusion is provided at the lower end of the second section body, and the positioning protrusion is arranged along the circumference of the lower port of the second section body.
[0008] Preferably, the inner cavity of the second section is a spherical surface convex downward, and the discharge port is arranged at the center of the spherical surface.
[0009] Preferably, the inner cavity of the second section has the same aperture as that of the inner cavity of the first section.
[0010] Preferably, the height of the positioning protrusion is greater than / equal to the height of the first segment.
[0011] Preferably, a jet hole is provided in the positioning protrusion, and the aperture of the jet hole increases from top to bottom.
[0012] Preferably, the second section is made of a heat-insulating material, and the heat-insulating material includes a titanium alloy or a ceramic alloy.
[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a detachable first section and a second section, so that when the mold core deviates, the gate only needs to replace the second section for use, which is convenient and quick. The utility model has a reasonable design, a simple structure, is easy to use and maintain, is easy to process and manufacture, and has a low production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a cross-sectional view of the structure of the first embodiment of the utility model;
[0015] Figure 2 This is a structural cross-sectional view of the second embodiment of the utility model;
[0016] Figure 3 This is a structural sectional view of another embodiment of the utility model.
[0017] In the figure: 1, first section; 11, first connecting portion; 12, support bar; 2, second section; 21, second connecting portion; 22, positioning protrusion; 23, spherical surface; 24, jet hole. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] For the first example, see Figure 1-3 The utility model provides a technical solution: a hot runner gate assembly, the gate assembly includes a first segment body 1 and a second segment body 2, the first segment body 1 and the second segment body 2 are detachably connected, the first segment body 1 is used to connect the end of the hot nozzle, the first segment body 1 is provided with a first connecting portion 11, the second segment body 2 is provided with a second connecting portion 21, and the second connecting portion 21 is sleeved with the first connecting portion 11.
[0020] Specifically, the outer wall of the first connecting part 11 is provided with an external thread, the inner wall of the second connecting part 21 is provided with an internal thread, the first connecting part 11 and the second connecting part 21 are threadedly connected, the first section 1 adopts a standard part, and the second section 2 can be disassembled from the first section 1.
[0021] Specifically, a support bar 12 is provided at the upper end of the first connecting portion 11. The outer diameter of the support bar 12 is greater than the outer diameter of the first section 1. When the first section 1 is connected to the hot nozzle, the support bar 12 can support and limit the hot nozzle.
[0022] Specifically, a positioning protrusion 22 is provided at the lower end of the second section 2, and the positioning protrusion 22 is arranged circumferentially along the lower port of the second section. When connected with the mold core, the positioning protrusion 22 and the inner wall of the positioning groove in the mold core realize positioning of the second section 2 and are tightly connected with the positioning groove, and can also prevent the hot nozzle from moving radially in the mold core.
[0023] Specifically, the inner cavity of the second section 2 is a spherical surface 23 protruding downward, and the discharge port is arranged at the center of the spherical surface 23. The spherical inner cavity makes it difficult for the molten plastic to be blocked.
[0024] In the second embodiment, the inner cavity of the second section 2 has the same aperture as the inner cavity of the first section 1, so that the molten plastic can pass through more smoothly.
[0025] In another embodiment, based on the first embodiment, when the size of the mold core deviates, or when the mold core with a thicker wall thickness is injected, the height of the positioning protrusion 22 is greater than / equal to the height of the first section 1, and a jet hole 24 is provided in the positioning protrusion 22, and the aperture of the jet hole 24 increases from top to bottom. It can be understood that the aperture of the jet hole 24 is set to be narrow at the top and wide at the bottom, which can prevent plastic clogging.
[0026] Specifically, the second section 2 is made of a heat-insulating material, and the heat-insulating material includes a titanium alloy and a ceramic alloy.
[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A hot runner gate device, characterized in that: The gate assembly includes a first section and a second section, the first section and the second section are detachably connected, the first section is used to connect the end of the hot nozzle, the first section is provided with a first connecting portion, the second section is provided with a second connecting portion, and the second connecting portion is sleeved with the first connecting outer wall.
2. A hot runner gate assembly according to claim 1, characterized in that: An outer wall of the first connection part is provided with an external thread, an inner wall of the second connection part is provided with an internal thread, and the first connection part and the second connection part are threadedly connected.
3. A hot runner gate assembly according to claim 2, characterized in that: A support bar is disposed at the upper end of the first connecting portion, and the outer diameter of the support bar is greater than the outer diameter of the first section.
4. A hot runner gate assembly according to claim 3, characterized in that: A positioning protrusion is provided at the lower end of the second section body, and the positioning protrusion is arranged along the circumference of the lower end port of the second section body.
5. A hot runner gate assembly according to claim 4, characterized in that: The inner cavity of the second section is a spherical surface convex downward, and the discharge port is arranged at the center of the spherical surface.
6. A hot runner gate assembly according to claim 5, characterized in that: The inner cavity of the second section has the same aperture as that of the inner cavity of the first section.
7. A hot runner gate assembly according to claim 4, characterized in that: The height of the positioning protrusion is greater than / equal to the height of the first segment.
8. The hot runner gate assembly according to claim 7, characterized in that: A jet hole is arranged in the positioning protrusion, and the aperture of the jet hole increases from top to bottom.
9. The hot runner gate assembly according to claim 1, characterized in that: The second section is made of a heat-insulating material, and the heat-insulating material includes a titanium alloy and a ceramic alloy.