Structure for manufacturing high-precision joint line

Abstract

The utility model relates to a structure for manufacturing a high-precision joint line, which comprises a mold core and an electric spark discharge electrode, the middle part of the mold core is provided with a central cavity, the mold core is provided with a plurality of sliding chutes penetrating into the central cavity from the outer side, and the sliding chutes are internally provided with sliding blocks in a sliding manner; the end, located in the center cavity, of each sliding block is used for forming a circle of mold closing cavity in a surrounding mode, the mold core is provided with a positioning piece used for positioning the sliding blocks when the sliding blocks are located at the positions where the mold closing cavities can be formed, and a plurality of protruding strips are distributed at the ends, located in the center cavity, of the sliding blocks. The electric spark discharge electrode is located in the mold closing cavity and comprises a product overall contour section used for being attached to the sliding block, it can be guaranteed that a mold closing line is smooth enough, and the sliding block can achieve very high dimensional accuracy and surface smoothness.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould manufacturing technical field, especially a kind of high-precision die line structure of making. BACKGROUND

[0002] In modern manufacturing industry, especially for the products such as handle shift switch which may have small strip-shaped grooves distributed on the outer side wall and need fine surface treatment, the quality of the mould directly determines the final quality of the product, and the mould required by such products needs to have small strip-shaped convex structure, so that the required product shape can be formed in injection molding processing, but it is difficult to ensure high precision in processing for the mould structure with small strip-shaped convex structure, and since the product needs to be easily demoulded, the mould for enclosing a circle and having small strip-shaped convex structure usually needs to be formed by multiple modules, but the die line between the modules is too obvious, which will affect the appearance aesthetics of the product and may cause hand scratching.

[0003] In view of the problems existing in the prior art, there is an urgent need for a new high-precision die line structure for making mould to improve the processing precision of the mould and the product quality. SUMMARY

[0004] The utility model provides a kind of high-precision die line structure of making, solve the above problems existing in the prior art in use.

[0005] The technical scheme of the utility model is realized as follows: a kind of high-precision die line structure of making, including die and electric spark discharge electrode, the center cavity is set in the middle part of the die, a plurality of self-outer side through center cavity's sliding slot is set on the die, the sliding block is slidably arranged in the sliding slot, each sliding block is located at one end of center cavity and is used to enclose a circle to form die cavity, the die is provided with positioning member for positioning sliding block when sliding block is located at the position capable of forming die cavity, a plurality of convex strips are distributed on the one end of the sliding block in the center cavity, the electric spark discharge electrode is located in die cavity, and the electric spark discharge electrode includes product overall contour section for being attached to the sliding block.

[0006] Preferably, the positioning member includes a pin, the pin is provided with two corresponding to each sliding block, the die is provided with two pin holes at the bottom of each sliding slot, the sliding block is provided with two positioning holes corresponding to the pin holes, and the pin is located in the positioning hole and the pin hole, and the sliding block is located at the position capable of forming die cavity.

[0007] Preferably, V-shaped protrusions and V-shaped notches are arranged on both sides of the sliding block at one end of the central cavity, and the V-shaped protrusions on each sliding block are used for being matched with the V-shaped notches of the adjacent sliding block.

[0008] Preferably, half protrusions are arranged on both sides of the sliding block at one end of the central cavity, and the half protrusions on each sliding block are used for being combined with the half protrusions of the adjacent sliding block to form a complete protrusion.

[0009] Preferably, the sliding groove is in T-shaped cross section, and the sliding block is matched with the sliding groove.

[0010] Preferably, the sliding groove and the sliding block are five in number.

[0011] Preferably, two mold opening positioning holes are arranged on the sliding block.

[0012] In summary, the beneficial effects of the present application are as follows:

[0013] 1. The present application realizes the accurate matching of the sliding block and the sliding groove, and realizes the accurate position of the sliding block when forming the mold cavity by positioning the sliding block when the sliding block is in the position capable of forming the mold cavity, so as to ensure the smoothness of the mold line, and the one end of the sliding block forming the mold cavity is processed by the product overall profile section on the electric spark discharge electrode, the electric spark processing is beneficial to realizing the very high dimensional accuracy and surface finish of the sliding block, and the application of the overall electrode reduces the cumulative error caused by multiple processes and multiple electrode splicing, and improves the consistency and precision of the finished product.

[0014] 2. The positioning pin hole ensures that the sliding block can be in the same position every time, and maintains the consistency of the relative position between the sliding block and the mold core.

[0015] 3. The half protrusion design enables multiple sliding blocks to be combined to form a complete small strip-shaped protrusion structure, so that the mold line is in the groove of the product, thereby being beneficial to hiding the mold line and being not easy to be detected by the naked eye or touched to scratch the hand. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0018] Figure 2This is a schematic diagram of the structure of the electric spark discharge electrode exploding upward in the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model after the electric spark discharge electrode is removed;

[0020] Figure 4 This is a schematic structural diagram of two adjacent sliders in the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the two sliders exploded upwards in the present invention.

[0022] In the figure: 1. Mold core; 11. Central cavity; 12. Slide groove; 13. Pin hole; 2. EDM discharge electrode; 21. Overall contour of product; 3. Slider; 31. Raised strip; 32. Positioning hole; 33. V-shaped protrusion; 34. V-shaped notch; 35. Half-raised strip; 36. Full-raised strip; 37. Mold opening positioning hole; 4. Mold closing cavity; 5. Pin. DETAILED DESCRIPTION

[0023] The following is a combination of the appended examples of the present invention Figures 1-5 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] Example:

[0025] like Figures 1 to 5As shown, the utility model discloses a kind of high-precision mold line structures of making, including die 1 and spark discharge electrode 2, center cavity 11 is set in the middle of die 1, and five self-outer side grooves 12 that pass into center cavity 11 are set in die 1, the cross section of groove 12 is T-shaped, sliding block 3 that is adapted to groove 12 is slidably arranged in each groove 12, sliding block 3 adopts process precision control accuracy, and groove 12 adopts process precision control accuracy by slow wire cutting, reach 0.008mm in double side of sliding clearance, ensure that sliding block 3 slides freely without jamming.5 sliding blocks 3 are located at one end of center cavity 11 and are used to form a circle to form mold cavity 4, and a plurality of convex strips 31 are distributed on the one end of center cavity 11 where sliding block 3 is located, mold cavity 4 is mainly used for forming the small strip-shaped groove distributed on the outer wall of product, and other parts of the product can be provided with other modules according to the specific product hub, which is the common knowledge of those skilled in the art, and will not be described here.The die 1 of the utility model is provided with a positioning member for positioning the sliding block 3 when the sliding block 3 is in a position capable of forming the mold cavity 4, and the positioning member specifically includes a pin 5, the pin 5 is provided with two corresponding to each sliding block 3, and the die 1 is provided with two pin holes 13 at the bottom of each groove 12, and the sliding block 3 is provided with two positioning holes 32 corresponding to the pin holes 13, when the pin 5 is located in the positioning hole 32 and the pin hole 13, the sliding block 3 is in a position capable of forming the mold cavity 4, through the positioning pin hole 13, it is ensured that the sliding block 3 can be in the same position every time it is closed, and the position of each sliding block 3 when forming the mold cavity 4 is accurate, so that the mold line of each mold can be as smooth as set. In addition, the spark discharge electrode 2 is used to be placed in the mold cavity 4 to perform spark processing on the sliding block, after completing the spark processing, the spark discharge electrode 2 is withdrawn, and the spark discharge electrode 2 includes a product overall contour section 21 used to be attached to the sliding block 3, the product overall contour section 21 is designed according to the product shape to be produced and is made by a CNC machine, and the sliding block 3 is processed in precision after the spark discharge electrode 2 is detected to be qualified, the product overall contour section 21 on the spark discharge electrode 2 is used to perform spark processing on one end of the sliding block 3 forming the mold cavity 4, and the spark machine is used for transverse discharge, after one division, all process errors are corrected by moving the position of the sliding block 3 and the spark discharge electrode 2, so that the error accuracy between each sliding block 3 is very close to zero, the structure uses a whole electrode to EDM discharge sliding block in die, avoids the error caused by multiple processes and multiple electrode splicing, can better guarantee the size accuracy, shape and position degree of each sliding block, avoids the error of multiple electrode discharge alone, saves cost and improves accuracy.The pin 5 is located in the positioning hole 32 and the pin hole 13, can also be used as a reference during subsequent EDM discharge, and makes the assembly and debugging of the mold more simple and fast, and the technician can check whether the slider 3 is located at the correct position by inserting the pin 5 quickly.

[0026] Further, the V-shaped protrusions 33 and the V-shaped notches 34 are arranged on both sides of one end of the center cavity 11 of the slider 3, the V-shaped protrusions 33 on each slider 3 are used for abutting with the V-shaped notches 34 of the adjacent slider 3, so that the alignment accuracy of the sliders 3 after surrounding the mold cavity 4 is further improved, and deviation out of a plane is avoided.

[0027] In addition, the half protrusions 35 are arranged on both sides of one end of the center cavity 11 of the slider 3, the half protrusions 35 on each slider 3 are used for combining the half protrusions 35 of the adjacent slider 3 to form a complete protrusion 36, that is, the mold closing line is on the complete protrusion 36, the complete protrusion 36 is consistent with the other protrusions 31 in shape, and the protrusions 31 and the complete protrusion 36 correspond to the grooves of the product, so that the mold closing line is in the groove of the product, thereby being beneficial to hiding the mold closing line, and the product is not easy to be detected by naked eyes or touched to scratch hands.

[0028] In the utility model, two mold opening positioning holes 37 are arranged on the slider 3, and the pin 5 is used for being inserted into the mold opening positioning hole 37 and the pin hole 13 during mold opening.

[0029] Meanwhile, it is pointed out that the terms such as "front", "rear", "vertical", "horizontal" and the like indicated in the utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used for facilitating the description of the utility model and simplifying the description, and cannot be understood as indicating or implying that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the protection scope of the utility model.

[0030] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A method of making a high precision parting line structure, characterized by: The utility model relates to a mould core and electric spark discharge electrode, the mould core middle part is equipped with center cavity, the mould core is equipped with a plurality of slide groove from outside to center cavity, the slide groove is equipped with sliding block, each sliding block is located in the one end of center cavity and is used to enclose a circle and form the die cavity, the mould core is equipped with the positioning piece for the positioning of sliding block when being located in the position of being able to form die cavity, the sliding block is distributed with a plurality of convex strips on the one end of center cavity, the electric spark discharge electrode is located in the die cavity, and the electric spark discharge electrode includes the product integral contour section for being attached on the sliding block.

2. The method of claim 1, wherein: The positioning piece includes a pin, the pin is provided with two for each sliding block, the bottom of each slide groove of the mould core is equipped with two pin holes, the sliding block is equipped with two positioning holes corresponding to the pin hole, when the pin is located in the positioning hole and the pin hole, the sliding block is located in the position of being able to form die cavity.

3. The method of claim 1, wherein: The sliding block is equipped with V-shaped convex and V-shaped notch on both sides of the one end of center cavity, and the V-shaped convex on each sliding block is used to be attached with the V-shaped notch of adjacent sliding block.

4. The method of claim 1, wherein: The sliding block is equipped with half convex strip on both sides of the one end of center cavity, and the half convex strip on each sliding block is used to combine with the half convex strip of adjacent sliding block to form complete convex strip.

5. The method of claim 1, wherein: The slide groove cross section is T-shaped, and the sliding block is matched with the slide groove.

6. The method of claim 1, wherein: The slide groove and sliding block are equipped with five.

7. The method of claim 1 or 2, wherein: The sliding block is equipped with two opening positioning holes.

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