Die exhaust structure

Abstract

The utility model relates to the field of injection molds, in particular to a mold exhaust structure which comprises a first mold core and an insert component, a through hole is formed in the first mold core, the insert assembly is arranged in the through hole, the insert assembly comprises a plurality of inserts, an exhaust gap is formed between every two adjacent inserts, and a glue injection channel is formed in at least one insert in the insert assembly. The mold exhaust structure has the advantages that the glue injection channel is arranged in the insert, so that plastic melt in the glue injection channel is prevented from entering the exhaust gap; and the exhaust gap on the insert assembly is arranged close to the glue injection channel, so that the exhaust of the high-temperature plastic melt is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold field, especially a mold exhaust structure. BACKGROUND

[0002] In the injection molding field, it is very difficult to form large-area or large-aspect-ratio thin-walled products because the injection melt cools down quickly when flowing in the mold cavity, while the exhaust in the mold cavity is not fast enough, resulting in holes on the product.

[0003] In order to improve the exhaust performance of the mold, the utility model with publication number CN219522902U discloses a mold convenient for exhaust and high-efficiency injection molding, which comprises an upper mold and a lower mold that are mutually butted, an injection system arranged on the upper mold, and an ejection mechanism arranged on the lower mold. The upper mold is fixedly installed with an upper mold core, and the lower mold is fixedly installed with a lower mold core. The upper mold is connected with a distribution plate at the top. The injection system comprises a sprue arranged on the distribution plate for guiding material. The sprue comprises a main runner arranged at the middle position of the distribution plate and a plurality of branch runners arranged around the main runner. The upper end of the main runner is connected with an external injection molding machine, the lower end of the main runner is connected with the plurality of branch runners respectively, and the plurality of branch runners are sequentially connected with the mold cavity through the distribution plate and the upper mold core. The plurality of branch runners are combined together with the plurality of inserts having the exhaust function.

[0004] In the prior art, in order to improve the exhaust effect, the runner is arranged between the inserts, and plastic melt is easily flowed into the exhaust gap, so that the inserts need to be cleaned frequently. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the purpose of the utility model is to provide a mold exhaust structure suitable for injection molding thin-walled products, injecting glue from the inserts, and not easily clamping material between the inserts.

[0006] The technical scheme adopted by the utility model to solve the problems is: a mold exhaust structure, comprising:

[0007] A first mold core and an insert assembly are provided. A through hole is arranged in the first mold core, and the insert assembly is arranged in the through hole. The insert assembly comprises a plurality of inserts, an exhaust gap is arranged between adjacent inserts, and at least one insert in the insert assembly is provided with a glue injection channel.

[0008] As a further improvement of the above technical scheme, the number of insert assemblies is multiple, and the insert assemblies are arranged in a ring array.

[0009] As a further improvement of the above technical scheme, the glue injection channel is arranged in at least two inserts in the insert assembly.

[0010] As a further improvement of the above technical solution, it further comprises a flow distribution plate, one section of the glue injection channel extends into the flow distribution plate, the flow distribution plate is embeddedly installed with the first mold core, and the insert assembly abuts on the flow distribution plate.

[0011] As a further improvement of the above technical solution, it further comprises a hot runner plate and an injection nozzle, the injection nozzle is embeddedly installed with the hot runner plate, and the flow distribution plate is arranged between the hot runner plate and the first mold core.

[0012] As a further improvement of the above technical solution, it further comprises a second mold core, the second mold core is arranged adjacent to the first mold core, a mold cavity is formed between the first mold core and the second mold core, and an inner end surface of the insert assembly is part of an inner wall of the mold cavity.

[0013] As a further improvement of the above technical solution, the mold cavity is used for forming a simulated plant leaf.

[0014] As a further improvement of the above technical solution, the mold cavity is used for forming a simulated lotus leaf.

[0015] As a further improvement of the above technical solution, one end of the insert block is provided with a boss, a step is arranged on the first mold core, the boss is overlapped with the step, and the boss is arranged at the end of the insert block away from the mold cavity.

[0016] As a further improvement of the above technical solution, a section of the through hole is quadrangular, the insert block is quadrangular, and a length-width ratio of the section of the insert block is not greater than 2.

[0017] The utility model discloses the beneficial effects are:

[0018] The glue injection channel is arranged in the insert block, and plastic melt in the glue injection channel is prevented from entering the exhaust gap.

[0019] The exhaust gap on the insert assembly is arranged close to the glue injection channel, which is beneficial to exhaust high-temperature plastic melt. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further explained and described in the combination of the drawings and specific embodiment.

[0021] Figure 1 It is the top view of the preferred embodiment of the utility model;

[0022] Figure 2 It is the D-D direction cross section structure schematic diagram of Figure 1

[0023] Figure 3 It is the C-C direction cross section structure schematic diagram of Figure 1 ​​

[0024] Figure 4 Assemble drawing of part of preferred embodiment of the utility model;

[0025] Figure 5 Exploded view of one angle of part of preferred embodiment of the utility model;

[0026] Figure 6 Exploded view of another angle of part of preferred embodiment of the utility model;

[0027] Figure 7 Exploded view of one angle of preferred embodiment of the utility model;

[0028] Figure 8 Exploded view of another angle of preferred embodiment of the utility model.

[0029] In the drawing: 1 - first mold core, 10 - through hole, 11 - step, 2 - insert assembly, 21 - insert block, 221 - boss, 22 - glue injection channel, 3 - hot runner plate, 4 - injection nozzle, 5 - second mold core, 6 - distribution plate. Specific implementation

[0030] This part will describe the specific embodiments of the utility model in detail, the preferred embodiment of the utility model is shown in the drawing, the role of the drawing is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0031] In the description of the utility model, it is understood that the orientation description, such as up, down, front, back, left, right and the like, is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as the limitation of the utility model.

[0032] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are not included in the number, above, below, within and the like are included in the number.If there is a description of the first, the second is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0033] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be understood broadly, and the skilled in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0034] Reference Figures 1 to 8 A mold exhaust structure, comprising:

[0035] The first mold core 1 is provided with a through hole 10, and the insert assembly 2 is arranged in the through hole 10. Figure 2 At least one insert block 21 in the insert assembly 2 is provided with a glue injection channel 22.

[0036] In the preferred embodiment, the number of insert assemblies 2 is multiple groups, and the insert assemblies 2 are arranged in an annular array.

[0037] In the preferred embodiment, at least two insert blocks 21 in the insert assembly 2 are provided with the glue injection channel 22.

[0038] In the preferred embodiment, it further includes a flow distribution plate 6, one end of the glue injection channel 22 extends into the flow distribution plate 6, the flow distribution plate 6 is embedded and installed with the first mold core 1, and the insert assembly 2 abuts on the flow distribution plate 6.

[0039] In the preferred embodiment, it further includes a hot runner plate 3 and an injection nozzle 4, the injection nozzle 4 is embedded and installed with the hot runner plate 3, and the flow distribution plate 6 is arranged between the hot runner plate 3 and the first mold core 1.

[0040] In the preferred embodiment, it further includes a second mold core 5, the second mold core 5 is arranged adjacent to the first mold core 1, a mold cavity is formed between the second mold core 5 and the first mold core 1, and an inner end surface of the insert assembly 2 is part of an inner wall of the mold cavity.

[0041] In the preferred embodiment, the mold cavity is used for forming a simulated plant leaf. In the field of simulated plants, a large-area simulated leaf is usually made of fabric, and it is difficult to form a large-area simulated leaf by injection molding. Because the fabric is too soft, it is difficult to keep the shape when forming a large-area leaf, and therefore, a large-area leaf made by injection molding is more realistic.

[0042] In the preferred embodiment, the mold cavity is used for forming a simulated lotus leaf.

[0043] With reference to Figure 6 In the preferred embodiment, one end of the insert 21 is provided with a boss 221, the first mold core 1 is provided with a step 11, the boss 221 is overlapped with the step 11, and the boss 221 is located at the end of the insert 21 away from the mold cavity. The boss 221 and the step 11 are used for positioning the insert assembly.

[0044] In the preferred embodiment, the cross section of the through hole 10 is quadrangular, the insert 21 is quadrangular, and the length-width ratio of the cross section of the insert 21 is not greater than 2. The length-width ratio of the insert 21 is close to 1 to ensure the strength of the insert, and therefore, the length-width ratio of the insert 21 should not be too large.

[0045] The above is only the preferred embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structural transformation, direct or indirect application in other related technical fields, or the like, which is made by using the content of the present application specification and drawings, is included in the patent protection range of the present application.

Claims

1. A mold exhaust structure characterized by, The utility model relates to a mold exhaust structure, including: First mold core (1), insert component (2); The first mold core (1) is equipped with through -hole (10), insert component (2) is equipped in through -hole (10), and insert component (2) includes multiple inserts (21), and exhaust gap is equipped between adjacent inserts (21), and at least one insert (21) in insert component (2) is equipped with glue injection channel (22).

2. The mold exhaust structure of claim 1, wherein: The number of insert component (2) is multiple groups, and insert component (2) is arranged in annular array.

3. The mold exhaust structure of claim 1, wherein: At least two inserts (21) in insert component (2) are equipped with glue injection channel (22).

4. The mold exhaust structure of claim 1, further comprising: A flow divider (6), a section of glue injection channel (22) extends into flow divider (6), flow divider (6) is embeddedly installed with first mold core (1), and insert component (2) is abutted on flow divider (6).

5. The mold exhaust structure of claim 4, further comprising: A hot runner plate (3) and an injection nozzle (4), the injection nozzle (4) is embeddedly installed with the hot runner plate (3), and the flow divider (6) is arranged between the hot runner plate (3) and the first mold core (1).

6. The mold exhaust structure of claim 1, further comprising: A second mold core (5), the second mold core (5) is arranged adjacent to the first mold core (1), a mold cavity is formed between the second mold core (5) and the first mold core (1), and an inner end surface of insert component (2) is part of an inner wall of the mold cavity.

7. The mold exhaust structure of claim 6, wherein: The mold cavity is used for forming a simulated plant leaf.

8. The mold exhaust structure of claim 7, wherein: The mold cavity is used for forming a simulated lotus leaf.

9. The mold exhaust structure of claim 6, wherein: One end of the insert (21) is provided with a boss (221), the first mold core (1) is provided with a step (11), the boss (221) is overlapped with the step (11), and the boss (221) is arranged at the end of the insert (21) away from the mold cavity.

10. The mold exhaust structure of claim 1, wherein: The cross section of the through hole (10) is quadrilateral, the insert (21) is quadrangular column, and the length-width ratio of the cross section of the insert (21) is not greater than 2.

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