Hot runner-to-cold runner pin-point gate structure of mold

Abstract

A hot runner-to-cold runner pin-point gate structure of a mold comprises the mold, and a heater is arranged at the top of the right side of the mold; a feeding hole is formed in the center of the top of the mold; a fixing plate is arranged at the top of the inner cavity of the mold, a plurality of material distributing pipes are arranged on the fixing plate, hot nozzles are arranged at the tops of the material distributing pipes, the bottoms of the material distributing pipes are connected with thin water pipe communicating pipes in a penetrating mode, and the bottoms of the thin water pipe communicating pipes are connected with four cold runner thin water pipes in a penetrating mode respectively. According to the hot runner-to-cold runner pin-point gate structure of the mold, through the design of the hot nozzle and the heater, the hot nozzle can be continuously heated by the heater, so that the temperature of a liquid raw material in the hot nozzle is ensured, the cooling blockage of the liquid raw material is prevented, meanwhile, the raw material can be shunted through the design, and the production efficiency is improved. It is guaranteed that excessive raw materials are not accumulated in one pipeline, the loss of the raw materials can be reduced, and meanwhile the injection molding pressure can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mould, in particular to a mould's hot runner turns cold runner water gap structure. BACKGROUND

[0002] At present, when mould is used to injection mould multi-cavity small product, because the product is small and thin and has multiple film-forming cavities, in order to meet the needs of the product, the pipeline is designed into a water gap, and the runner is multiple and long, but the design method can lead to waste and loss of raw materials, and great injection pressure is needed to inject liquid raw materials into the mold cavity, therefore, the present design a mould's hot runner turns cold runner water gap structure, through the design of hot nozzle turning cold runner, not only some runner can be saved, but also the injection pressure can be reduced. SUMMARY

[0003] The utility model discloses a mould's hot runner turns cold runner water gap structure, which overcomes the defects in the prior art.

[0004] The utility model discloses a mould's hot runner turns cold runner water gap structure, which overcomes the defects in the prior art.

[0005] A kind of mould's hot runner turns cold runner water gap structure, including: mould, the top of the right side of the mould is provided with heater;The central part of the top of the mould is provided with feed inlet;The top position of the inner cavity of the mould is provided with fixed plate, the fixed plate is provided with several distribution pipes, the top of the distribution pipe is provided with hot nozzle, the bottom of the distribution pipe is connected with water gap connecting pipe, the bottom of the water gap connecting pipe is respectively connected with four cold runner water pipes;The bottom of the pipe body of the cold runner water pipe is sleeved with front mold insert, the bottom of the front mold insert is provided with mold cavity, the bottom of the mold cavity is provided with rear mold insert.

[0006] In one embodiment, the feed inlet is connected with each hot nozzle, and the hot nozzle is connected with the distribution pipe.

[0007] In one embodiment, the hot nozzle and the heater are connected by a heat pipe to achieve heat transfer, and the hot nozzle has a circular shape in plan view.

[0008] In one embodiment, the central part of the bottom of the distribution pipe is connected with the water gap connecting pipe, and the two ends of the two pipes on the side away from the distribution pipe are connected with the cold runner water pipe.

[0009] In one embodiment, the pipe body of the top of the cold runner water pipe penetrates the plate body of the fixed plate, and the hot nozzle and the distribution pipe are located on the top of the fixed plate.

[0010] In one of the embodiments, a fixing disc is sleeved on the bottom of the distribution pipe body, and support columns are equidistantly arranged on the bottom of the fixing disc around the distribution pipe as the center.

[0011] In one of the embodiments, the bottom of the support column and the top of the water pipe communication pipe are fixedly connected through a connecting joint.

[0012] In one of the embodiments, the cold runner water pipe is designed in a shape of wide top and narrow bottom, and the pipe body at the bottom of the cold runner water pipe is arranged in a bending mode, and the discharge port is abutted against the inner wall of the molding cavity.

[0013] Compared with the prior art, the mold hot runner to cold runner water gap structure has at least the following advantages:

[0014] The mold hot runner to cold runner water gap structure can continuously heat the hot nozzle through the design of the hot nozzle and the heater, so that the temperature of the liquid raw material in the hot nozzle is ensured, and the cooling and blocking of the hot nozzle is prevented, the raw material can be distributed, so that too much raw material is not accumulated in one pipe, the loss of the raw material is reduced, and the injection pressure is also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0016] Fig. 1 It is a whole three-dimensional schematic view of the mold hot runner to cold runner water gap structure of the present application;

[0017] Fig. 2 It is a partial three-dimensional schematic view of the mold hot runner to cold runner water gap structure of the present application;

[0018] Fig. 3 It is a partial three-dimensional schematic view of the mold hot runner to cold runner water gap structure of the present application.

[0019] In the drawings: 1, mold; 11, heater; 2, feed inlet; 3, fixed plate; 31, hot nozzle; 32, distribution pipe; 33, cold runner water pipe; 34, front mold insert; 35, rear mold insert; 36, molding cavity; 37, fixing disc; 38, support column; 39, water pipe communication pipe. DETAILED DESCRIPTION

[0020] For the convenience of understanding the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0021] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0022] Unless otherwise clearly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements.

[0023] 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 the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] As Figs. 1-3 As shown in the drawings, a hot runner to cold runner water pin structure of a mold, comprising: a mold 1, a heater 11 is arranged at the top of the right side of the mold 1; a feeding port 2 is arranged at the center of the top of the mold 1; a fixed plate 3 is arranged at the top position of the inner cavity of the mold 1, a plurality of distribution pipes 32 are arranged on the fixed plate 3, a hot nozzle 31 is arranged at the top of the distribution pipe 32, a water pipe connecting pipe 39 is connected through the bottom of the distribution pipe 32, and four cold runner water pipes 33 are connected through the bottom of the water pipe connecting pipe 39; a front mold insert 34 is sleeved on the bottom of the pipe body of the cold runner water pipe 33, a mold cavity 36 is arranged at the bottom of the front mold insert 34, and a rear mold insert 35 is arranged at the bottom of the mold cavity 36. It should be noted that the mold 1 is composed of a plurality of plate bodies, a slot for placing a film forming cavity is arranged at the corresponding position of each plate body, and guide columns are arranged between the plate bodies, which are used by workers to assemble the mold 1 together, and also prevent the mold 1 from being assembled incorrectly.

[0025] As shown in Figs. 1-3 one embodiment, the feed inlet 2 is connected to each hot nozzle 31, and the hot nozzle 31 is connected to the distribution pipe 32. It should be noted that the plate body at the top of the mold 1 is provided with a pressure injection hole for pressurizing the raw material in the distribution pipe 32 to flow into the molding cavity 36.

[0026] As shown in Figs. 1-3 one embodiment, the hot nozzle 31 and the heater 11 are connected to each other by a heat pipe to achieve heat transfer. The hot nozzle 31 has 8 nozzles, and the top view is circular. It should be noted that the hot nozzle 31 can maintain a certain temperature, so that the liquid raw material in the hot nozzle 31 can always maintain a certain temperature, thereby ensuring the flowability of the liquid raw material in the pipeline.

[0027] As shown in Figs. 1-3 one embodiment, the bottom of the distribution pipe 32 is connected to the water pipe communication pipe 39, and the two ends of the two pipes on the side away from the distribution pipe 32 are connected to the cold runner water pipe 33. It should be noted that this design can make the liquid raw material in each hot nozzle 31 only enter the four cold runner water pipes 33, thereby preventing too much raw material from accumulating in one pipe, thereby preventing the liquid raw material from being blocked in the pipe.

[0028] As shown in Figs. 1-3 one embodiment, the top of the cold runner water pipe 33 penetrates the plate body of the fixed plate 3, and the hot nozzle 31 and the distribution pipe 32 are located on the top of the fixed plate 3. The bottom of the distribution pipe 32 is fixedly sleeved with a fixed disc 37, and the bottom of the fixed disc 37 is provided with support columns 38 around the circumference with the distribution pipe 32 as the center. It should be noted that this design can fix the distribution pipe 32 with the fixed disc 37, and the bottom of the distribution pipe 32 and the fixed plate 3 are not connected to each other.

[0029] As shown in Figs. 1-3 one embodiment, the bottom of the support column 38 is fixedly connected to the top of the water pipe communication pipe 39. It should be noted that this design can make the support column 38 support the cold runner water pipe 33.

[0030] As shown in Figs. 1-3 one embodiment, the cold runner water pipe 33 is designed to be wide at the top and narrow at the bottom, and the bottom of the cold runner water pipe 33 is curved and the outlet is located on the inner wall of the molding cavity 36. It should be noted that this design can effectively solve the problem of difficult product glue feeding.

[0031] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A hot runner-to-cold runner gate structure for a mold, characterized by, The utility model provides a mould for producing plastic injection moulding, which comprises the following: A mould (1) is provided with a heater (11) on the top right side; A feeding port (2) is arranged on the top center of the mould (1); A fixed plate (3) is arranged on the top of the inner cavity of the mould (1), and a plurality of distribution pipes (32) are arranged on the fixed plate (3), wherein the top of each distribution pipe (32) is provided with a hot nozzle (31), the bottom of each distribution pipe (32) is connected with a water pipe communication pipe (39) in a penetrating manner, and the bottom of the water pipe communication pipe (39) is connected with four cold runner water pipes (33) in a penetrating manner; A front mould insert (34) is sleeved on the bottom of the pipe body of each cold runner water pipe (33), the bottom of the front mould insert (34) is provided with a mould cavity (36), and the bottom of the mould cavity (36) is provided with a rear mould insert (35).

2. The hot runner-to-cold runner gate structure of claim 1, wherein, The feeding port (2) is connected with each hot nozzle (31) in a penetrating manner, and the hot nozzle (31) is connected with the distribution pipe (32) in a penetrating manner.

3. The hot runner-to-cold runner gate structure of claim 1, wherein, The hot nozzle (31) and the heater (11) are connected by a heat conducting pipe to realize heat transfer, the hot nozzle (31) has eight, and the shape of the top surface is circular.

4. The hot runner-to-cold runner gate structure of claim 1, wherein The bottom center of the distribution pipe (32) is connected with the water pipe communication pipe (39) in a penetrating manner, and the bottom of the two ends of the two pipes away from the distribution pipe (32) side of the water pipe communication pipe (39) is connected with the cold runner water pipe (33) in a penetrating manner.

5. The hot runner to cold runner gate structure of claim 1, wherein, The pipe body of the top of the cold runner water pipe (33) penetrates the plate body of the fixed plate (3), and the hot nozzle (31) and the distribution pipe (32) are located on the top of the fixed plate (3).

6. The hot runner-to-cold runner water nozzle structure of a mold according to claim 1, wherein A fixed disc (37) is fixedly sleeved on the bottom of the pipe body of the distribution pipe (32), and a support column (38) is arranged on the bottom of the fixed disc (37) at equal distances around the center of the distribution pipe (32).

7. The hot runner-to-cold runner water nozzle structure of a mold according to claim 6, wherein The bottom of the support column (38) and the top of the water pipe communication pipe (39) are fixedly connected through a connecting joint.

8. The hot runner-to-cold runner gate structure of claim 1, wherein, The cold runner water pipe (33) is designed in a shape of wide top and narrow bottom, and the pipe body of the bottom of the cold runner water pipe (33) is arranged in a curved manner, and the discharge port of the pipe body abuts against the inner wall of the mould cavity (36).

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