Sprue mold core and sprue mold core structure with same

Abstract

The utility model discloses a pouring gate mold core and a pouring gate mold core structure with the pouring gate mold core, the pouring gate mold core comprises a mold core body and two cooling water channels arranged in the mold core body, the two cooling water channels are V-shaped, and the angle range of the V shape is 5-20 degrees; wherein one cooling water path is provided with a water inlet hole, and the other cooling water path is provided with a water outlet hole; the two cooling water paths are respectively provided with a first port and a second port, the first ports are positioned at the end part of the pouring gate mold core, the second ports are positioned inside the pouring gate mold core, and the second ports of the two cooling water paths are communicated with each other; and the angle range between the plane formed by the two cooling water channels and the axis of the sprue mold core is 6-15 degrees. According to the pouring gate mold core cooling water path, the V shape is adopted, so that cooling water can be closer to key parts, needing to be cooled, of the mold core, and therefore, the cooling efficiency and quality are improved, and the pouring gate mold core cooling water path is not limited by materials, sizes, precision and the like, and can be widely applied to various injection molds with complicated shapes.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sprue insert technical field, specifically, it is a sprue insert and has its sprue insert structure. BACKGROUND

[0002] In the injection mold, the sprue insert as the core component of the mold, its cooling effect has vital influence on the quality and production efficiency of injection product.

[0003] The traditional sprue insert cooling waterway design usually adopts linear or ring layout, this design can meet the basic cooling demand in the simple shape insert. However, with the increasing complexity of injection product structure, the requirement of mold cooling effect is also higher and higher. Especially in some complex shape sprue insert, the traditional cooling waterway layout is difficult to close to the key parts of the insert that need to be cooled, leading to the cooling effect decline. The poor cooling effect will directly lead to the injection product deformation, shrinkage, surface gloss inconsistency and other defects, not only affect the appearance quality of the product, but also may lead to the decline of product performance, thereby increasing the production cost and the scrap rate.

[0004] In order to solve this problem, the industry adopts 3D printing technology to make the sprue insert with complex shape cooling waterway. Although 3D printing technology can solve the waterway layout problem to some extent, but the technology in the actual application faces a series of new problems, the selection of 3D printing material is strictly limited, some high performance, high corrosion resistance material cannot be processed by 3D printing technology; the precision and dimensional stability of 3D printing is relatively poor, it is difficult to meet the processing requirements of high precision mold, and the cost of 3D printing is high, the strength and life of the printed parts are often not as good as the traditional processing method. Therefore, the existing 3D printing technology has obvious limitations in solving the problem of sprue insert cooling waterway.

[0005] Therefore, how to produce the sprue insert with good cooling effect through effective cooling waterway structure and processing method to solve the existing defects and deficiencies, that is, the direction of the people engaged in this industry who want to improve. UTILITY MODEL CONTENT

[0006] The utility model aims at the above problem, provides a sprue insert and has its sprue insert structure.

[0007] The utility model discloses a technical scheme for a sprue bushing, comprising a bushing body and two cooling water channels arranged in the bushing body, the two cooling water channels are in a V shape, and the angle of the V shape ranges from 5 to 20 degrees; one of the two cooling water channels has an inlet, and the other has an outlet; both of the two cooling water channels are provided with a first port and a second port, the first port is located at the end of the sprue bushing, the second port is located in the interior of the sprue bushing, and the second ports of the two cooling water channels are connected; the angle between the plane formed by the two cooling water channels and the axis of the sprue bushing ranges from 6 to 15 degrees.

[0008] As an improvement of the utility model embodiment, the first port of one of the two cooling water channels is the inlet, and the first port of the other is the outlet.

[0009] As an improvement of the utility model embodiment, an inlet channel and an outlet channel are arranged on the bushing body, the inlet is arranged in the middle of one of the two cooling water channels, the outlet is arranged in the middle of the other, the inlet channel is connected with the inlet, the outlet channel is connected with the outlet, and the first ports of the two cooling water channels are both provided with plugs.

[0010] As an improvement of the utility model embodiment, the distance between the inlet and the end face where the first port of one of the two cooling water channels is located is L1, the distance between the outlet and the end face where the first port of the other is located is L2, and the ranges of L1 and L2 are both 20-50 mm.

[0011] As an improvement of the utility model embodiment, L1=L2=35 mm.

[0012] As an improvement of the utility model embodiment, the angle of the V shape is 9 degrees.

[0013] As an improvement of the utility model embodiment, the angle between the plane formed by the two cooling water channels and the axis of the sprue bushing is 7 degrees.

[0014] As an improvement of the utility model embodiment, the distance between the second port of the cooling water channel and the interior of the bushing body away from the first port is 3-5 mm.

[0015] To achieve one of the above utility model purposes, the utility model provides a sprue bushing structure, comprising a sprue bushing plate, a plurality of mounting holes arranged on the sprue bushing plate, and a plurality of sprue bushings according to the above embodiments, and the sprue bushings are arranged in the mounting holes.

[0016] As a kind of improvement of the utility model embodiment: the sprue bushing plate is further provided with water inlet and water outlet, first water channel is arranged between the water inlet and the water outlet, the first water channel is sequentially communicated with several installation holes.

[0017] The sprue bushing provided by the utility model has the advantages that: the V-shaped cooling water channel of the sprue bushing can make cooling water more close to the key parts of the bushing that need to be cooled, so that the cooling efficiency and quality are improved, and the sprue bushing can be widely applied in various injection molds with complex shapes without being limited by material, size, precision and the like. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the sprue bushing schematic diagram of the utility model;

[0019] Figure 2 It is the sprue bushing plate schematic diagram of the utility model.

[0020] Wherein: 1-bush body, 2-cooling water channel, 3-sprue bushing plate, 11-water inlet channel, 12-water outlet channel, 21-first port, 22-second port, 23-water inlet hole, 24-water outlet hole, 25-plug, 31-installation hole, 32-water inlet, 33-water outlet, 34-first water channel. DETAILED DESCRIPTION

[0021] The utility model will be described in detail in combination with specific implementation shown in the drawings. But these implementation does not limit the utility model, the conversion of structure, method or function made by ordinary skilled in the art according to these implementation is included in the protection scope of the utility model.

[0022] If the utility model involves orientation (for example, upper, lower, left, right, front, rear, outer, inner and the like) when expressing, the orientation involved needs to be defined.

[0023] The scope of the embodiments herein includes the full scope of the claims, and all available equivalents of the claims. Herein, the terms "first", "second", and the like, merely distinguish among elements in a given set, and do not necessarily indicate a relationship between such elements, or a particular order of such elements. In fact, a first element could be termed a second element and, similarly, a second element could be termed a first element without departing from the scope of the present disclosure. Also, the terms "comprise", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure, device or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such structure, device or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the structure, device, apparatus or process.

[0024] The utility model provides a kind of gate pin, including pin body 1 and the two cooling water paths 2 of being set in pin body 1, two The cooling water path 2 is V-shaped.The angle range of V-shaped is 5 ~ 20 °, preferably, the angle of V-shaped is 9 °, it can be understood that, the design of V-shaped makes cooling water can be more evenly distributed in pin body 1 inside, more closely adhere to pin wall surface, to increase heat exchange area, improve heat transfer efficiency, more effectively absorb the heat generated in injection molding process, and V-shaped makes that cooling water path 2 inside is not easy to accumulate impurities and dirt, reduce maintenance difficulty and cost.

[0025] One of the cooling water paths 2 has a water inlet hole 23, and the other cooling water path 2 has a water outlet hole 24; both of the cooling water paths 2 are provided with a first port 21 and a second port 22, the first port 21 is located at the end of the gate pin, and the second port 22 is located inside the gate pin, and the second ports 22 of the two cooling water paths 2 are communicated;

[0026] The angle between the plane formed by the two cooling water paths 2 and the axis of the gate pin is in the range of 6° to 15°, and preferably, the angle between the plane formed by the two cooling water paths 2 and the axis of the gate pin is 7°. It can be understood that this helps the cooling water to be closer to the high temperature area near the pin axis, thereby enhancing the heat conduction efficiency and reducing the concentration of thermal stress, which is beneficial to the rapid solidification and demolding of the product to be cooled, and can also prevent deformation and cracking of the gate pin due to local overheating, thereby prolonging the service life of the gate pin.

[0027] In this embodiment, the first port 21 of one of the cooling water paths 2 is a water inlet hole, and the first port 21 of the other cooling water path 2 is a water outlet hole.

[0028] In the embodiment, the water inlet channel 11 and the water outlet channel 12 are arranged on the mold core body 1, the water inlet hole 23 is arranged in the middle of one of the cooling water paths 2, the water outlet hole 24 is arranged in the middle of the other cooling water path 2, the water inlet channel is communicated with the water inlet hole 23, the water outlet channel is communicated with the water outlet hole 24, and the first port 21 of the two cooling water paths 2 is provided with a plug 25. It can be understood that the plug 25 not only prevents the leakage of cooling water, but also simplifies the subsequent maintenance operation. When cleaning or repairing the cooling water path is needed, the plug can be removed for cleaning or repairing.

[0029] Here, the water inlet hole 23 and the water outlet hole 24 are arranged in the middle of the cooling water path 2, which can ensure that the cooling water can more evenly absorb and carry away heat when flowing through the entire mold core body, avoid the formation of a short circuit of the water flow in the mold core, and improve the cooling efficiency. Moreover, the layout of the middle water inlet and water outlet makes the flow path of the water flow in the mold core relatively short and uniform, reduces the resistance caused by the bending or length of the pipeline, and helps to reduce the pressure loss of the cooling water in the flow process.

[0030] In the embodiment, the distance between the water inlet hole 23 and the end face of the first port 21 of one of the cooling water paths 2 is L1, the distance between the water outlet hole 24 and the end face of the first port 21 of the other cooling water path 2 is L2, and the range of L1 and L2 is 20-50mm, preferably L1=L2=35mm. It can be understood that this can ensure that the cooling water can be more evenly distributed in the mold core body when entering and leaving the cooling water path, which helps to reduce the temperature gradient and improve the overall cooling efficiency of the mold. Setting L1 and L2 to the same preferred value can simplify the design and manufacturing process of the mold, which not only reduces the manufacturing cost, but also improves the production efficiency and quality stability.

[0031] In the embodiment, the distance between the second port 22 of the cooling water path 2 and the inside of the mold core body 1 away from the first port 21 is 3-5mm. It can be understood that arranging the second port 22 at a position 3-5mm away from the first port 21 inside the mold core body can help to ensure that the cooling water can be closer to the mold core body 1 during the flow process, increase the heat exchange area, and thus improve the heat exchange efficiency, so that the mold can reach the required cooling temperature faster.

[0032] The utility model provides a kind of gate core structure, as shown in Figure 2 It includes gate core plate 3, several installation holes 31 arranged on gate core plate 3 and several gate cores of any one of embodiment one, and the gate core is arranged in the installation hole 31.

[0033] In the embodiment, the gate bushing plate 3 is further provided with a water inlet 32 and a water outlet 33, and a first water channel 34 is arranged between the water inlet 32 and the water outlet 33, and the first water channel 34 is sequentially communicated with a plurality of the mounting holes 31.

[0034] The working principle of the utility model is: in the injection molding process, the gate bushing is installed in the mounting hole 31 on the gate bushing plate 3, the product to be cooled is poured outside the gate bushing, the cooling water enters the first water channel 34 through the water inlet 32, and then flows through the cooling water channel 2 of each gate bushing. Because the cooling water channel 2 is V-shaped, the cooling water can be evenly distributed in the gate bushing, effectively taking away the heat generated in the injection molding process. With the flow of cooling water in the gate bushing, heat is transferred to the cooling water, and the cooling water is discharged from the gate bushing structure through the water outlet 33, thereby realizing the cooling of the product to be cooled. The utility model realizes efficient and uniform cooling effect through the V-shaped cooling water channel design and reasonable cooling water circulation path, ensures the temperature control of the mold in the injection molding process and the molding quality of the product.

[0035] The above has described the embodiment of the utility model, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles, practical application or technical improvement in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A gate insert characterized in that: The application relates to a sprue bushing, which comprises a sprue bushing body (1) and two cooling water channels (2) arranged in the sprue bushing body (1), wherein the two cooling water channels (2) are in a V shape, the angle of the V shape ranges from 5 DEG to 20 DEG, one of the two cooling water channels (2) is provided with an inlet hole (23), and the other cooling water channel (2) is provided with an outlet hole (24). The two cooling water channels (2) are both provided with first ports (21) and second ports (22), the first ports (21) are located at the end of the sprue bushing, the second ports (22) are located in the interior of the sprue bushing, the second ports (22) of the two cooling water channels (2) are communicated, and the angle between the plane formed by the two cooling water channels (2) and the axis of the sprue bushing ranges from 6 DEG to 15 DEG.

2. The gate pin of claim 1, wherein The first port (21) of one of the two cooling water channels (2) is an inlet hole, and the first port (21) of the other cooling water channel (2) is an outlet hole.

3. The gate pin of claim 2, wherein, The sprue bushing body (1) is provided with an inlet water channel (11) and an outlet water channel (12), the inlet hole (23) is arranged in the middle of one of the two cooling water channels (2), the outlet hole (24) is arranged in the middle of the other cooling water channel (2), the inlet water channel is communicated with the inlet hole (23), the outlet water channel is communicated with the outlet hole (24), and the first ports (21) of the two cooling water channels (2) are both provided with plugs (25).

4. The gate pin of claim 1, wherein, The distance between the inlet hole (23) and the end face where the first port (21) of one of the two cooling water channels (2) is located is L1, the distance between the outlet hole (24) and the end face where the first port (21) of the other cooling water channel (2) is located is L2, and the range of L1 and L2 is 20-50 mm.

5. The gate pin of claim 4, wherein, L1=L2=35 mm.

6. The gate pin of claim 1, wherein, The angle of the V shape is 9 DEG.

7. The gate pin of claim 1, wherein, The angle between the plane formed by the two cooling water channels (2) and the axis of the sprue bushing is 7 DEG.

8. The gate pin of claim 1, wherein, The distance between the second port (22) of the cooling water channel (2) and the interior of the sprue bushing body (1) away from the first port (21) is 3-5 mm.

9. A gate insert structure, characterized by The application further relates to a sprue bushing plate (3), a plurality of mounting holes (31) arranged on the sprue bushing plate (3) and a plurality of sprue bushings according to any one of claims 1-8, wherein the sprue bushings are arranged in the mounting holes (31).

10. The gate pin structure of claim 9, wherein The sprue bushing plate (3) is further provided with an inlet (32) and an outlet (33), a first water channel (34) is arranged between the inlet (32) and the outlet (33), and the first water channel (34) is communicated with the mounting holes (31) in sequence.

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