HALF block with secondary machining molding sprue and mold

Abstract

The utility model provides an HALF block with a secondary processing molding sprue, a flow channel is formed in the HALF block with the secondary processing molding sprue, the HALF block with the secondary processing molding sprue is provided with an end face, the flow channel is obliquely arranged relative to the end face, and the end face is provided with an opening. The HALF block with the secondary machining forming pouring gate is provided with the pouring gate used for exposing the runner, and the pouring gate is manufactured through the two-time electric spark machining technology. According to the HALF block with the pouring gate formed through secondary machining and the mold, the pouring gate is formed through two times of electric spark machining, the consistency of the position and precision of the pouring gate is ensured, and the pouring gate can be more attractive by forming the straight section at the pouring gate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the mould field, concretely relates to a HALF block and mould with secondary processing forming gate. BACKGROUND

[0002] The processing difficulty of the latent gate is relatively high, which is mainly because the latent gate needs to be processed into a lateral concave-convex surface shape, both to ensure that it will not be broken or left in the cavity during the flow channel pushing process, and to consider the allowable size of the lateral concave-convex surface and the rigidity of the material. Specifically, the processing difficulty of the latent gate mainly reflects the following:

[0003] (1) Complex shape: The latent gate is usually tunnel-shaped, which needs to be processed by a special method (such as electric spark processing), which increases the processing difficulty.

[0004] (2) High precision requirement: In order to ensure that the gate can be automatically cut off when the mold is opened, and does not affect the appearance and quality of the plastic part, the processing precision of the latent gate is very high.

[0005] When the above-mentioned latent gate electric spark processing electrode cuts in, the cutting angle must be ensured, and deviation cannot occur. Once the angle deviates, the precision of the gate is difficult to guarantee. The deviation of the gate will cause uneven glue feeding in the injection molding link. The product with large gate may have quality problems such as excessive fullness and product flash; the product with small gate may have quality problems such as product shrinkage and glue shortage.

[0006] Therefore, it is necessary to improve the existing HALF block with secondary processing forming gate to solve the above-mentioned problems. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at providing a HALF block with secondary processing forming gate to solve.

[0008] In order to achieve the above-mentioned purpose, the utility model provides a HALF block with secondary processing forming gate, which is formed with a flow channel, has an end face, and is provided with a gate for exposing the flow channel. The flow channel is inclined relative to the end face, and the gate is made by twice electric spark processing technology.

[0009] As a further improvement of the utility model, a straight section perpendicular to the end face is formed at the gate.

[0010] As a further improvement of the utility model, the length of the straight section is 0.01-0.03mm.

[0011] As a further improvement of this utility model, the electrode of the first electrical discharge machining is inclined to the end face, and the electrode of the second electrical discharge machining is perpendicular to the end face.

[0012] As a further improvement of this utility model, different electrodes are used for the two electrical discharge machining processes.

[0013] As a further improvement of this utility model, the position of the gate is not higher than the end face.

[0014] As a further improvement of this utility model, the diameter of the gate is 0.35mm.

[0015] This utility model also provides a mold, which includes a HALF block with a secondary processing molding gate as described above.

[0016] As a further improvement of this utility model, the gate is located on one side of the moving mold or one side of the fixed mold.

[0017] The beneficial effects of this utility model are: the HALF block and mold with secondary processing and forming gate of this utility model form the gate through two electrical discharge machining, ensuring the consistency of gate position and accuracy, and the gate is more beautiful by forming a straight section at the gate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the HALF block with a secondary processing and molding gate according to this utility model;

[0019] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of a HALF block with a secondary processing and molding gate along the AA direction.

[0020] Figure 3 yes Figure 2 A magnified structural diagram of region B in the middle. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] As Figures 1 to 3 Indicated, the mold of the utility model includes the HALF block 100 with secondary processing forming gate, in addition, it can also include mold frame, mold core, guide structure, ejection structure and the like.

[0025] Among them, the HALF block 100 with secondary processing forming gate can be a fixed mold or a movable mold, the flow channel is formed in the HALF block 100 with secondary processing forming gate, the HALF block 100 with secondary processing forming gate has an end face, the flow channel is inclinedly arranged relative to the end face, and the HALF block 100 with secondary processing forming gate is provided with a gate 1 for exposing the flow channel.

[0026] The gate 1 is generally hidden at the inner surface or side surface of the plastic part, and does not affect the appearance of the product. After the product is formed, the gate 1 is automatically pulled off when being ejected, easy to remove and with small traces, thereby eliminating the post-processing of the product.

[0027] The gate 1 is located at one side of the movable mold or one side of the fixed mold of the mold, in addition, the gate 1 can also be arranged on the rib, column and parting surface of the plastic part, and the position of the gate 1 can be flexibly selected.

[0028] In the embodiment, the gate 1 is a latent gate 1, that is, the position of the gate 1 is not higher than the end face. The latent gate 1 can realize automatic material falling, meet the demand of automatic production, and help improve production efficiency. In addition, the latent gate 1 can avoid leaving injection marks and air marks on the surface of the product due to injection, and help improve the forming quality of the product.

[0029] The gate 1 is manufactured by adopting twice electric spark machining process. The electric spark machining process can form a gate 1 with complex shape, and can meet the application of more scenes.

[0030] The electrode of the first electric spark machining is arranged obliquely to the end face, and the electrode of the second electric spark machining is arranged perpendicularly to the end face. In the embodiment, the gate 1 is formed by adopting twice electric spark machining process, which can reduce the requirement for the machining precision of the first electric spark machining. Even if there is an angle deviation in the first electric spark machining, the consistency of the gate 1 can be ensured in the second electric spark machining due to the electrode being arranged perpendicularly to the end face, so as to ensure the appearance and quality of the injection molded part.

[0031] The straight section 2 perpendicular to the end face is formed at the gate 1, and the straight section 2 is formed by the second electric spark machining. The length of the straight section 2 is 0.01-0.03 mm, and preferably 0.02 mm. In addition to ensuring the position and precision of the gate 1, the straight section 2 can make the product gate 1 more beautiful.

[0032] The electrodes of the twice electric spark machining are different. The diameter of the gate 1 is 0.35 mm. The deviation of the gate 1 manufactured by the original single electrode machining process is relatively large, and the diameter of the gate 1 is 0.26-0.34 mm. In the embodiment, the second electric spark machining is added, so that the diameter of the gate 1 can be stabilized at 0.35 mm.

[0033] Specifically, the gate 1 in the embodiment is processed in the following manner. In the first electric spark machining, the electrode is cut in obliquely, and when the electrode is cut in obliquely to the critical point of the gate 1, the oblique cutting is stopped, a new electrode is replaced, and the electrode is cut in horizontally from the front of the gate 1 to complete the second electric spark machining and form the straight section 2.

[0034] The HALF block 100 and the mold with the twice-machined gate according to the utility model can form the gate 1 by twice electric spark machining, ensure the consistency of the position and precision of the gate 1, and make the gate 1 more beautiful by forming the straight section 2 at the gate 1.

[0035] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0036] 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 HALF block having a post-molded gate, characterized by: The HALF block with a secondary processing gate has a runner formed therein, the HALF block with a secondary processing gate has an end face, the runner is arranged obliquely to the end face, the HALF block with a secondary processing gate is provided with a gate for exposing the runner, and the gate is made by twice electric spark processing.

2. The HALF block with a post-molded gate of claim 1, wherein: The gate is formed with a straight section perpendicular to the end face.

3. The HALF block with a post-molded gate of claim 2, wherein: The length of the straight section is 0.01-0.03 mm.

4. The HALF block with a post-molded gate of claim 1, wherein: The electrode for the first electric spark processing is arranged obliquely to the end face, and the electrode for the second electric spark processing is arranged perpendicularly to the end face.

5. The HALF block with a post-molded gate of claim 4, wherein: The electrodes for the twice electric spark processing are different.

6. The HALF block with a post-molded gate of claim 1, wherein: The position of the gate is not higher than the end face.

7. The HALF block with a post-molded gate of claim 1, wherein: The diameter of the gate is 0.35 mm.

8. A mold characterized by: The mold comprises the HALF block with a secondary processing gate according to any one of claims 1-7.

9. The mold of claim 8, wherein: The gate is located on one side of the moving die or one side of the fixed die of the mold.

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