Mould pin-point gate ox horn glue inlet pipeline structure
By designing a horn-shaped sprue gate for the mold, the problem of difficult glue injection for small products with multiple cavities in the mold was solved, the injection path was optimized, and the injection efficiency was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-03-31
AI Technical Summary
When injection molding small products with multiple cavities, it is difficult to inject the glue into the mold, especially for products with an outer surface. Insufficient injection space leads to insufficient pressure, which is caused by an unreasonable design of the injection channel.
Design a mold sprue with a horn-shaped inlet pipe structure, including a heater, a cooling pipe and a film-forming cavity. The special design of the horn-shaped outlet pipe increases the inlet space, and the inlet path is optimized by fitting the front mold and rear mold inserts with the film-forming cavity.
It effectively solved the problem of difficult mold injection, increased the injection space for products, and improved injection efficiency.
Smart Images

Figure CN224060350U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of molds, and in particular to a horn-shaped sprue inlet pipe structure for molds. Background Technology
[0002] Currently, when injection molding multi-cavity small products, the product is small and thin, and the surface is also the outer surface. The limited space for the injection tube makes it difficult to inject the glue. In addition, the multi-cavity design requires flow diversion, which results in insufficient pressure in each injection tube. Therefore, a new mold sprue horn injection tube structure is designed to effectively solve the problem of difficult injection. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a horn-shaped sprue inlet pipe structure for molds.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] A sprue gate horn-shaped inlet pipe structure for a mold includes: a mold, a heater, a cooling pipe, and a film-forming chamber; the heater is disposed on one side of the top of the mold, and the cooling pipe is disposed on the side of the central inner cavity of the mold near the bottom; a feed inlet is disposed at the center of the top of the mold, a plurality of hot nozzles are disposed at the top of the inner cavity of the mold, a distribution plate is disposed at the bottom of the hot nozzles, a plurality of discharge pipes are disposed at the bottom of the distribution plate, and a sprue gate horn-shaped discharge pipe is connected through the bottom of the discharge pipes; a front mold insert is disposed on the body of the discharge pipe, a rear mold insert is disposed at the bottom of the discharge pipe, and a rear mold is disposed at the bottom of the rear mold insert.
[0006] In one embodiment, the hot nozzle is heat-transfer connected to the heater via a heat pipe, the hot nozzle is through-connected to the feed inlet, and the hot nozzle is through-connected to the dispensing plate.
[0007] In one embodiment, the discharge pipe is connected to the distribution plate, and the discharge pipe is located in the center of the front mold cavity.
[0008] In one embodiment, the film-forming cavity is located between the front mold insert and the rear mold insert, and the shape and size of the film-forming cavity correspond to the shape and size of the forming groove between the front mold insert and the rear mold insert.
[0009] In one embodiment, the bottom outlet of the fine sprue bend discharge tube passes through the front mold insert and extends into the film-forming cavity, with the bottom outlet of the fine sprue bend discharge tube abutting against the inner wall of the film-forming cavity.
[0010] In one embodiment, the fine nozzle horn-shaped discharge pipe has a design that is narrow at the top and wide at the bottom, and the discharge pipe at its bottom has a bent design.
[0011] In one embodiment, the film-forming cavity is located in the center of the mold near the bottom, and the body of the cooling pipe is in close contact with the film-forming cavity.
[0012] Compared with the prior art, the present invention has at least the following advantages:
[0013] This utility model discloses a mold sprue with a horn-shaped inlet pipe structure. Through the structural design of the front mold, front mold insert, rear mold insert, and rear mold, as well as the position design of the horn-shaped inlet pipe and the outlet pipe, the horn-shaped inlet pipe can guide the raw material into the film-forming cavity between the front mold insert and the rear mold insert. At the same time, the design of the horn-shaped inlet pipe can further reduce the space of the pipe in the film-forming cavity, increase the glue injection space of the product, and thus solve the problem of difficult glue injection. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the overall structure of the horn-shaped sprue inlet pipe of a mold according to the present invention.
[0016] Figure 2 This is a partial schematic diagram of the horn-shaped sprue inlet glue channel structure of a mold according to the present invention;
[0017] Figure 3 This is a partial schematic diagram of the horn-shaped sprue inlet pipe structure of a mold according to the present invention.
[0018] In the diagram: 1. Mold; 11. Inlet; 12. Hot nozzle; 13. Distributor plate; 14. Outlet pipe; 15. Fine sprue, horn-shaped outlet pipe; 16. Front mold; 17. Front mold insert; 18. Rear mold insert; 19. Rear mold; 2. Heater; 3. Cooling pipe; 4. Film forming chamber. Detailed Implementation
[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0020] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0021] Unless otherwise explicitly specified and limited, the terms “installation,” “connection,” “linking,” “fixing,” etc., should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0023] like Figure 1-3As shown, a sprue gate horn-shaped inlet pipe structure for a mold includes: a mold 1, a heater 2, a cooling pipe 3, and a film-forming chamber 4; the heater 2 is located on one side of the top of the mold 1, and the cooling pipe 3 is located on the side of the central inner cavity of the mold 1 near the bottom; an inlet 11 is located at the center of the top of the mold 1, and several hot nozzles 12 are located at the top of the inner cavity of the mold 1, a distribution plate 13 is located at the bottom of the hot nozzles 12, and several outlet pipes 14 are located at the bottom of the distribution plate 13, with a sprue gate horn-shaped outlet pipe 15 passing through the bottom of the outlet pipes 14; a front mold insert 17 is located on the body of the outlet pipe 14, a rear mold insert 18 is located at the bottom of the outlet pipe 14, and a rear mold 19 is located at the bottom of the rear mold insert 18. It should be noted that the discharge port at the bottom of the fine nozzle horn-shaped discharge pipe 15 is not only smaller than the inlet at the top, but is also designed as a flat and slender square. Furthermore, only a small section of the discharge port of the fine nozzle horn-shaped discharge pipe 15 is located in the film-forming chamber 4, thereby maximizing the glue injection space of the product.
[0024] like Figure 1-3 As shown, in one embodiment, the hot nozzle 12 is connected to the heater 2 via a heat transfer pipe, the hot nozzle 12 is connected through the feed inlet 11, and the hot nozzle 12 is connected through the distribution plate 13. It should be noted that the hot nozzle 12 has a circular shape when viewed from above, and there are multiple hot nozzles 12 arranged horizontally.
[0025] like Figure 1-3 As shown, in one embodiment, the discharge pipe 14 is connected to the distribution plate 13, and the discharge pipe 14 is located in the center of the inner cavity of the front mold 16. It should be noted that four discharge pipes 14 are equally spaced at the bottom of a distribution plate 13, and the discharge pipes 14 on each side are fixedly connected to each other by fixing rods.
[0026] like Figure 1-3 As shown, in one embodiment, the film-forming cavity 4 is located between the front mold insert 17 and the rear mold insert 18, and the shape and size of the film-forming cavity 4 correspond to the shape and size of the groove formed between the front mold insert 17 and the rear mold insert 18. It should be noted that the film-forming cavity 4, the front mold insert 17, and the rear mold insert 18 can all be replaced, enabling the production of products of different specifications and models.
[0027] like Figure 1-3 As shown in one embodiment, the bottom outlet of the narrow sprue outlet tube 15 passes through the front mold insert 17 and extends into the film-forming cavity 4. The bottom outlet of the narrow sprue outlet tube 15 rests against the inner wall of the film-forming cavity 4. The narrow sprue outlet tube 15 has a design that is narrower at the top and wider at the bottom, and its bottom outlet tube has a bent design. It should be noted that this design minimizes the space occupied by the narrow sprue outlet tube 15 in the film-forming cavity 4.
[0028] like Figure 1-3As shown in one embodiment, the film-forming cavity 4 is located in the center of the mold 1 near the bottom, and the tube body of the cooling pipe 3 is in close contact with the film-forming cavity 4. It should be noted that the cooling pipe 3 can be in close contact with the film-forming cavity 4, so that the heat in the film-forming cavity 4 can be removed by heat transfer through the cold water in the cooling pipe 3.
[0029] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A nozzle structure of a water gate for a die, characterized by, The utility model relates to a kind of film forming device, including: Mold (1), heater (2), cooling pipe (3) and film forming cavity (4); The heater (2) is arranged at the top of the mold (1) on one side, and the cooling pipe (3) is arranged in the central inner cavity of the mold (1) near the bottom on one side; The top of the mold (1) is provided with a feeding port (11) in the center, and the top of the inner cavity of the mold (1) is provided with a plurality of hot nozzles (12), the bottom of the hot nozzle (12) is provided with a distribution disc (13), and the bottom of the distribution disc (13) is provided with a plurality of discharge pipes (14), and the bottom of the discharge pipe (14) is connected with a thin water gap horn bend discharge pipe (15) through connection. The pipe body of the discharge pipe (14) is provided with a front mold insert (17), the bottom of the discharge pipe (14) is provided with a rear mold insert (18), and the bottom of the rear mold insert (18) is provided with a rear mold (19).
2. A nozzle for a mold according to claim 1, characterized in that The hot nozzle (12) and the heater (2) are connected by a heat pipe, the hot nozzle (12) is connected with the feeding port (11), and the hot nozzle (12) is connected with the distribution disc (13).
3. A nozzle for a mold according to claim 1, wherein The discharge pipe (14) is connected with the distribution disc (13), and the discharge pipe (14) is located in the central inner cavity of the front mold (16).
4. A nozzle for a mold according to claim 1, wherein The film forming cavity (4) is located between the front mold insert (17) and the rear mold insert (18), and the shape and size of the film forming cavity (4) are matched with the shape and size of the formed slot between the front mold insert (17) and the rear mold insert (18).
5. A nozzle for a die as defined in claim 1, wherein The bottom discharge port of the thin water gap horn bend discharge pipe (15) penetrates through the front mold insert (17) and extends into the film forming cavity (4), and the bottom discharge port of the thin water gap horn bend discharge pipe (15) abuts against the inner wall of the film forming cavity (4).
6. A nozzle for a mold according to claim 1, wherein The thin water gap horn bend discharge pipe (15) is designed in a narrow-top wide-bottom style, and the discharge pipe at the bottom is designed in a bent style.
7. A nozzle for a mold according to claim 1, wherein The film forming cavity (4) is located at the central bottom of the mold (1), and the pipe body of the cooling pipe (3) and the film forming cavity (4) are in close contact with each other.