Die structure capable of preventing neck from being broken

Abstract

The utility model relates to the field of injection mold design, in particular to a mold structure for preventing neck breakage, which comprises a first mold, two first straight inserts, two second straight inserts and a second mold, the first mold and the second mold are clamped, connected and assembled to form a complete mold, one end of the first mold is provided with an injection port, and the other end of the first mold is provided with a second straight insert. A first neck part at the top of the first mold and a second neck part at the top of the second mold are spliced and combined, and three first reinforcing ribs and three second reinforcing ribs are uniformly arranged on the outer walls of the first neck part and the second neck part, so that the strength of the neck parts is enhanced; a first straight insert and a second straight insert are mounted on the outer side of the first neck part and the outer side of the second neck part in a clamping manner, through the design of the straight inserts, the strength and stability of the neck area of the mold are improved, stress is effectively dispersed, the neck part is prevented from being broken, and the straight inserts are made of high-strength alloy materials and heat treatment and surface coating technologies; the wear resistance and the corrosion resistance of the insert are enhanced, and the long-term stability of the mold is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold design field, concretely is a mold structure of preventing neck fracture. BACKGROUND

[0002] Injection mold is a tool for producing plastic products, and is also a tool for giving plastic products complete structure and accurate size. Injection mold is also a processing method used when mass producing parts, mainly applied in industrial field. The injection mold process is to inject high-pressure molten material into the mold cavity, and get the shaped product after cooling and solidification.

[0003] However, the prior art has the following defects:

[0004] The neck design of the traditional mold often adopts an un-reinforced structure, which makes the part subjected to large pressure and temperature change prone to fracture during frequent injection molding operation. This problem not only shortens the service life of the mold, but also affects the stability and quality of the product UTILITY MODEL CONTENT

[0005] The utility model aims at providing a mold structure for preventing neck fracture to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a mold structure for preventing neck fracture, comprising a first mold, two first straight body inserts, two second straight body inserts and a second mold, one side of the first mold is clamped and connected with one side of the second mold, the top of the first mold is provided with a first neck, and the outer side of the first neck is uniformly provided with three first reinforcing ribs, the top of the second mold is provided with a second neck, and the outer side of the second neck is uniformly provided with three second reinforcing ribs, the two sides of the outer wall of the first neck and the two sides of the outer wall of the second neck are respectively clamped and installed with the first straight body insert and the second straight body insert.

[0007] The above-mentioned technical scheme is adopted, the first mold and the second mold are combined to form a whole, the first straight body insert and the second straight body insert are embedded on the outer side of the neck, the strength and bearing capacity of the mold are improved, and the problem of neck fracture is effectively solved.

[0008] The opening end of the first mold is provided with an outer convex structure, the opening end of the second mold is provided with an inner concave structure, a sealing gasket is bonded in the inner concave structure, and the outer convex structure is clamped and connected with the inner concave structure.

[0009] The above-mentioned technical scheme is adopted, the sealing gasket enhances the sealing performance of the mold, and prevents liquid leakage during injection molding production.

[0010] The middle of the two ends of the first reinforcing rib is provided with a clamping block, the middle of the two ends of the second reinforcing rib is provided with a third clamping groove, the clamping block is installed in the third clamping groove, and the middle of the end of the first mold away from the first neck is provided with an injection port.

[0011] The first reinforcing rib and the second reinforcing rib increase the strength of the neck of the mold, and the injection port facilitates the injection of plastic liquid into the mold.

[0012] The end of the first mold close to the first neck is symmetrically provided with two first sliding grooves, the middle of the end of the first mold close to the first neck is provided with a first arc-shaped sliding groove, one end of the first sliding groove is communicated with the first arc-shaped sliding groove, the end of the second mold close to the second neck is symmetrically provided with two second sliding grooves, the middle of the end of the second mold close to the second neck is provided with a second arc-shaped sliding groove, and one end of the second sliding groove is communicated with the second arc-shaped sliding groove.

[0013] The first arc-shaped sliding groove and the second arc-shaped sliding groove form a complete circular sliding groove after the first mold and the second mold are assembled, and the first straight body insert and the second straight body insert are facilitated to rotate outside the neck.

[0014] The middle of the bottom of the first straight body insert is provided with a first sliding block, the middle of the bottom of the second straight body insert is provided with a second sliding block, and the two first sliding blocks and the two second sliding blocks are respectively slid into the first arc-shaped sliding groove and the second arc-shaped sliding groove along the first sliding groove and the second sliding groove.

[0015] The first sliding groove and the second sliding groove have a quick positioning effect, and the cross-sectional shape of the first straight body insert and the second straight body insert is a sector shape.

[0016] The inner side of the first straight body insert is uniformly provided with three first clamping grooves, the inner side of the second straight body insert is uniformly provided with three second clamping grooves, the two ends of the first reinforcing rib and the two ends of the second reinforcing rib are respectively installed in the first clamping grooves and the second clamping grooves, and are fixedly connected by screws.

[0017] The first clamping groove and the second clamping groove are installed on the outer side of the first reinforcing rib and the second reinforcing rib, so as to ensure that the inner side of the first straight body insert and the inner side of the second straight body insert are tightly attached to the outer wall of the first neck and the outer wall of the second neck.

[0018] The first straight body insert and the second straight body insert are made of titanium alloy material through a high-strength heat treatment process, the outer surface of the first straight body insert and the outer surface of the second straight body insert are subjected to nitriding treatment and coated with a chromium plating layer, and the contact surface of the first straight body insert and the contact surface of the second straight body insert are subjected to precise polishing treatment.

[0019] Adopt the above technical scheme, the scheme implements multilayer surface coating treatment outside the first straight body insert and the second straight body insert, to further enhance its wear resistance, corrosion resistance, fracture resistance and the like, and improve the long-term use stability of the mold.

[0020] Compared with the prior art, the utility model has the advantages that:

[0021] Through the design of the straight body insert, the strength and stability of the neck region of the mold are improved, stress is effectively dispersed, neck fracture is avoided, high-strength alloy materials and heat treatment and surface coating technology are adopted, the wear resistance and corrosion resistance of the insert are enhanced, and the long-term stability of the mold is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure schematic view of the utility model;

[0023] Figure 2 It is a first mold front structure schematic view of the utility model;

[0024] Figure 3 It is a first straight body insert mechanism schematic view of the utility model;

[0025] Figure 4 It is a second straight body insert structure schematic view of the utility model;

[0026] Figure 5 It is a whole overhead structure plane schematic view of the utility model.

[0027] In the drawing: 1, first mold; 2, first sliding groove; 3, first straight body insert; 4, first reinforcing rib; 5, first neck; 6, second straight body insert; 7, second neck; 8, second reinforcing rib; 9, second sliding groove; 10, second mold; 11, first clamping groove; 12, first sliding block; 13, second clamping groove; 14, second sliding block; 15, first arc-shaped sliding groove; 16, outer convex structure; 17, second arc-shaped sliding groove; 18, inner concave structure; 19, third clamping groove; 20, clamping block; 21, injection port. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] Please refer to Figures 1-5The utility model provides a kind of mould structure for preventing neck fracture, including first mould 1, two first straight body inserts 3, two second straight body inserts 6 and second mould 10, one side of first mould 1 is connected with one side of second mould 10, the top of first mould 1 is equipped with first neck 5, and three first reinforcing ribs 4 are evenly equipped outside first neck 5, the top of second mould 10 is equipped with second neck 7 and three second reinforcing ribs 8 are evenly equipped outside second neck 7, first straight body insert 3 and second straight body insert 6 are respectively installed in the two sides of the outer wall of first neck 5 and the two sides of the outer wall of second neck 7, first mould 1 and second mould 10 are assembled into complete mould, and two ends are closed.

[0030] First mould 1 opening end is equipped with outer convex structure 16, second mould 10 opening end is equipped with inner concave structure 18, sealing washer is bonded in inner concave structure 18, and outer convex structure 16 is connected with inner concave structure 18, and outer convex structure 16 and inner concave structure 18 are correspondingly arranged.

[0031] The middle of the two ends of first reinforcing rib 4 is equipped with clamping block 20, the middle of the two ends of second reinforcing rib 8 is equipped with third clamping groove 19, clamping block 20 is installed in the inside of third clamping groove 19, the middle of the one end of first mould 1 away from first neck 5 is equipped with injection port 21, first reinforcing rib 4 and second reinforcing rib 8 are connected, and the connection strength of first mould 1 and second mould 10 is enhanced.

[0032] The one end of first mould 1 close to first neck 5 is symmetrically equipped with two first sliding grooves 2, the middle of the one end of first mould 1 close to first neck 5 is equipped with first arc-shaped sliding groove 15, the one end of first sliding groove 2 is communicated with first arc-shaped sliding groove 15, the one end of second mould 10 close to second neck 7 is symmetrically equipped with two second sliding grooves 9, the middle of the one end of second mould 10 close to second neck 7 is equipped with second arc-shaped sliding groove 17, the one end of second sliding groove 9 is communicated with second arc-shaped sliding groove 17, the angle formed between two first sliding grooves 2 and two second sliding grooves 9 is ninety degrees.

[0033] The middle of the bottom of first straight body insert 3 is equipped with first sliding block 12, the middle of the bottom of second straight body insert 6 is equipped with second sliding block 14, two first sliding blocks 12 and two second sliding blocks 14 are respectively slid into first arc-shaped sliding groove 15 and second arc-shaped sliding groove 17 inside along first sliding groove 2 and second sliding groove 9, and the cross-sectional shape of first sliding block 12 and second sliding block 14 is sector.

[0034] The inner side of the first straight body insert piece 3 is uniformly provided with three first clamping grooves 11, the inner side of the second straight body insert piece 6 is uniformly provided with three second clamping grooves 13, the two ends of the first reinforcing rib 4 and the two ends of the second reinforcing rib 8 are respectively clamped and installed in the first clamping grooves 11 and the second clamping grooves 13, and are fixedly connected through screws between each other, and the middle part of the first clamping grooves 11 and the two ends of the second clamping grooves 13 are all provided with threaded holes.

[0035] The first straight body insert piece 3 and the second straight body insert piece 6 are both made of titanium alloy material through a high-strength heat treatment process, the outer surfaces of the first straight body insert piece 3 and the second straight body insert piece 6 are subjected to nitriding treatment and are coated with a chromium plating layer, the contact surfaces of the first straight body insert piece 3 and the second straight body insert piece 6 are both subjected to precise polishing treatment, and the first straight body insert piece 3 and the second straight body insert piece 6 are both subjected to multilayer surface coating treatment.

[0036] Working principle: when the utility model is used, first, the open ends of the first mold 1 and the second mold 10 are aligned and clamped and connected, a complete mold is assembled, then two first sliding blocks 12 and two second sliding blocks 14 are respectively inserted from the open ends of the first sliding groove 2 and the second sliding groove 9, are pushed inward until they enter the first arc-shaped sliding groove 15 and the second arc-shaped sliding groove 17, the first clamping grooves 11 and the second clamping grooves 13 are respectively clamped and installed on the outer sides of the two ends of the first reinforcing rib 4 and the outer sides of the two ends of the second reinforcing rib 8, the first straight body insert piece 3 and the second straight body insert piece 6 are fixedly connected with the first reinforcing rib 4 and the second reinforcing rib 8 through bolts, then molten liquid is injected from the injection port 21.

[0037] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A mold structure for preventing neck breakage, comprising a first mold (1), two first straight body inserts (3), two second straight body inserts (6), and a second mold (10), characterized in that: One side of the first mold (1) is engaged with one side of the second mold (10). The top of the first mold (1) is provided with a first neck (5), and three first reinforcing ribs (4) are evenly provided on the outer side of the first neck (5). The top of the second mold (10) is provided with a second neck (7), and three second reinforcing ribs (8) are evenly provided on the outer side of the second neck (7). The two sides of the outer wall of the first neck (5) and the two sides of the outer wall of the second neck (7) are respectively engaged with and installed with a first straight insert (3) and a second straight insert (6).

2. The mold structure for preventing neck breakage according to claim 1, characterized in that: The first mold (1) has an outward protruding structure (16) at its opening end, and the second mold (10) has an inward concave structure (18) at its opening end. A sealing gasket is bonded inside the inward concave structure (18), and the outward protruding structure (16) and the inward concave structure (18) are engaged and connected.

3. The mold structure for preventing neck breakage according to claim 1, characterized in that: The first reinforcing rib (4) has a locking block (20) at the middle of both ends, and the second reinforcing rib (8) has a third locking groove (19) at the middle of both ends. The locking block (20) is engaged and installed inside the third locking groove (19). The first mold (1) has an injection port (21) at the middle of the end away from the first neck (5).

4. The mold structure for preventing neck breakage according to claim 1, characterized in that: The first mold (1) has two first grooves (2) symmetrically opened at one end near the first neck (5). The first mold (1) has a first arc-shaped groove (15) in the middle part of one end near the first neck (5). One end of the first groove (2) is connected to the first arc-shaped groove (15). The second mold (10) has two second grooves (9) symmetrically opened at one end near the second neck (7). The second mold (10) has a second arc-shaped groove (17) in the middle part of one end near the second neck (7). One end of the second groove (9) is connected to the second arc-shaped groove (17).

5. The mold structure for preventing neck breakage according to claim 4, characterized in that: The first straight insert (3) has a first slider (12) at the middle of its bottom, and the second straight insert (6) has a second slider (14) at the middle of its bottom. The two first sliders (12) and the two second sliders (14) slide into the first arc-shaped groove (15) and the second arc-shaped groove (17) respectively along the first groove (2) and the second groove (9).

6. The mold structure for preventing neck breakage according to claim 1, characterized in that: The inner side of the first straight insert (3) is evenly provided with three first slots (11), and the inner side of the second straight insert (6) is evenly provided with three second slots (13). The two ends of the first reinforcing rib (4) and the two ends of the second reinforcing rib (8) are respectively engaged and installed inside the first slot (11) and the second slot (13), and are fixedly connected to each other by screws.

7. The mold structure for preventing neck breakage according to claim 1, characterized in that: The first straight insert (3) and the second straight insert (6) are both made of titanium alloy material through a high-strength heat treatment process. The outer surfaces of the first straight insert (3) and the second straight insert (6) are nitrided and coated with chromium plating. The contact surfaces of the first straight insert (3) and the second straight insert (6) are both precision polished.

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