Flow balancing mold with narrow cavity and inclined inner ribs

Abstract

The utility model belongs to the technical field of dies, and discloses a narrow-cavity inclined inner rib flow balancing die which comprises an upper die and a lower die, an inner die piece is fixed on the bottom face of the upper die, a plurality of feeding cavities are formed in the upper die in a penetrating mode, a feeding welding chamber is arranged on the top face of the lower die, an outer die hole is formed in the bottom of the feeding welding chamber in a penetrating mode, and the outer die hole is communicated with the inner die piece. A forming gap is formed between the inner mold piece and the inner wall of the outer mold hole, the shape of the forming gap is matched with that of a product, and a flow balance flow blocking structure is fixed to the top of the hole wall of the outer mold hole. According to the utility model, the flow balance of injected materials is realized, the problem that the injected materials cannot be fully filled due to the narrow cavity is solved, and the yield of products is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a narrow cavity inclined inner rib flow balance mold. Background Art

[0002] Moulds are various molds and tools used in industrial production to obtain the required products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. They are crucial tools in industrial production and can achieve large-scale and efficient production to ensure product consistency and precision.

[0003] A narrow cavity mold is a type of mold with a narrow internal cavity structure. Due to the narrow cavity, there are more stringent requirements on processing accuracy, mold material selection, and demolding mechanism.

[0004] For the narrow cavity inside the narrow cavity mold, the speed of injection into it is very slow, resulting in extremely unbalanced flow rate of the injection inside the mold. It is very easy for the injection to fail to reach the right position and cause the product to be unqualified. Utility Model Content

[0005] The main technical problem to be solved by the utility model is to provide a narrow cavity oblique inner rib flow balance mold, which realizes the flow balance of the injection material, solves the problem that the cavity cannot be completely filled with injection material due to its narrow cavity, and ensures the yield rate of the product.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A narrow cavity oblique inner rib flow balance mold, comprising an upper mold and a lower mold, wherein an inner mold is fixed on the bottom surface of the upper mold, the shape of the inner mold is adapted to the shape of the product, and a plurality of feed cavities are provided through the upper mold, and all the feed cavities are surrounded and arranged on the outer side of the inner mold;

[0008] A feed welding chamber is provided on the top surface of the lower mold, the shape and size of the feed welding chamber are adapted to the outlet shape of all feed cavities, an external mold hole is penetrated through the bottom of the feed welding chamber, a molding gap is formed between the inner mold part and the inner wall of the external mold hole, the shape of the molding gap is adapted to the shape of the product, and a flow balance choke structure is fixed on the top of the hole wall of the external mold hole.

[0009] The following is a further optimization of the above technical solution by the utility model:

[0010] The inner mold includes a first limiting portion, a second limiting portion and a third limiting portion which are separately arranged, and a narrow cavity is formed between the first limiting portion and the second limiting portion. A fourth limiting portion and a fifth limiting portion are provided on the inner wall of the outer mold hole, and the fourth limiting portion is arranged between the second limiting portion and the third limiting portion, and the fifth limiting portion is arranged at an end of the third limiting portion away from the second limiting portion.

[0011] Further optimization: the flow balancing choke structure includes a choke block fixed on the bottom wall of the feed welding chamber, the shape of the choke block is the same as the shape of the product, and a first opening and a second opening are provided on the choke block, and the position of the first opening corresponds to the position of the first limit portion.

[0012] Further optimization: a spoiler is provided at the second opening, the spoiler is fixed on the fifth limiting portion, and the spoiler is connected to the spoiler block.

[0013] Further optimization: two oppositely arranged oblique inner grooves are arranged above the narrow cavity, the inclination directions of the two oblique inner grooves are opposite, and the two oblique inner grooves are respectively arranged on the inner walls of the two opposite feed cavities.

[0014] The utility model adopts the above technical scheme, which has the following beneficial effects: the technical scheme of the utility model is provided with a flow balancing blocking structure on the lower die for blocking the flow of the feed, which is used to block the flow of the feed into the lower die, so that the flow rate of the feed at the periphery of the molding gap is reduced, thereby ensuring that enough feed flows into the narrow cavity on the lower die, avoiding the situation where the narrow cavity is not filled with feed due to its extremely narrow width, ensuring that all positions of the molded product meet the requirements, not only avoiding the waste of feed, but also improving the yield rate of the molded product.

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the installation of the inner mold and the outer mold hole in the embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the upper mold in the embodiment of the utility model;

[0020] Figure 4 for Figure 3 A schematic diagram of the main view;

[0021] Figure 5 for Figure 4 Schematic cross-sectional view along the AA direction;

[0022] Figure 6 This is a schematic diagram of the structure of the lower mold in the embodiment of the utility model;

[0023] Figure 7 for Figure 5 A schematic diagram of the main view;

[0024] Figure 8 It is a structural schematic diagram of a mold forming product in an embodiment of the utility model.

[0025] In the figure: 1-upper mold; 11-inner mold; 111-first limiting part; 112-second limiting part; 113-third limiting part; 12-feeding cavity; 13-inner inclined groove; 2-lower mold; 21-feeding welding chamber; 22-outer mold hole; 221-fourth limiting part; 222-fifth limiting part; 23-molding gap; 231-narrow cavity; 24-balanced flow-blocking structure; 241-flow-blocking block; 242-first opening; 243-second opening; 244-flow-blocking plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1-Figure 8 As shown together, a narrow cavity oblique inner rib flow balancing mold includes an upper mold 1 and a lower mold 2. An inner mold 11 is fixed on the bottom surface of the upper mold 1. The shape of the inner mold 11 is adapted to the shape of the product. A plurality of feed cavities 12 are penetrated through the upper mold 1. All the feed cavities 12 are surrounded and arranged on the outer side of the inner mold 11.

[0028] like Figure 2 , Figure 6 and Figure 7As shown together, a feed welding chamber 21 is provided on the top surface of the lower mold 2, and the shape and size of the feed welding chamber 21 are adapted to the outlet shape of all the feed cavities 12, and an outer mold hole 22 is penetrated through the bottom of the feed welding chamber 21, and a molding gap 23 is formed between the inner mold 11 and the inner wall of the outer mold hole 22, and the shape of the molding gap 23 is adapted to the shape of the product, and a flow balancing flow blocking structure 24 is fixed to the top of the hole wall of the outer mold hole 22.

[0029] In this embodiment, a molding gap 23 having the same shape as the molded product is formed between the inner mold 11 and the outer mold hole 22. The liquid feed enters the molding gap 23 and completely fills it. After the molded product is taken out and the excess part is removed, a finished product that meets the standards can be obtained.

[0030] like Figure 2-Figure 4 As shown together, the inner mold 11 includes a first limiting portion 111, a second limiting portion 112 and a third limiting portion 113 which are separately arranged, and a narrow cavity 231 is formed between the first limiting portion 111 and the second limiting portion 112. A fourth limiting portion 221 and a fifth limiting portion 222 are provided on the inner wall of the outer mold hole 22. The fourth limiting portion 221 is arranged between the second limiting portion 112 and the third limiting portion 113, and the fifth limiting portion 222 is arranged at an end of the third limiting portion 113 away from the second limiting portion 112.

[0031] In this embodiment, the interior of the mold not only has a relatively wide molding gap 23, but also has an extremely narrow cavity 231. As a result, the flow speed of the feed in various places inside the mold is not balanced. The feed enters the molding gap 23 at a relatively fast speed, and the filling work can be completed quickly, while the speed of entering the narrow cavity 231 is very slow, which can easily lead to the situation that the narrow oblique inner ribs of the product cannot be completely formed due to lack of material in the narrow cavity 231.

[0032] like Figure 2 , Figure 6 and Figure 7 As shown together, the flow balancing blocking structure 24 includes a blocking block 241 fixed on the bottom wall of the feed welding chamber 21. The shape of the blocking block 241 is the same as the shape of the product. The blocking block 241 is provided with a first opening 242 and a second opening 243. The position of the first opening 242 corresponds to the position of the first limiting portion 111.

[0033] In this embodiment, the flow balancing blocking structure 24 is used to balance the flow rate of the feed inside the mold, and the blocking block 241 is configured to hinder the flow of the feed, so that the flow of the feed in the molding gap 23 is balanced, thereby increasing the residence time of the feed in the molding gap 23, allowing enough feed to enter the narrow cavity 231 to ensure the molding quality, thereby improving the yield rate of the molded product.

[0034] In this embodiment, the purpose of setting the first opening 242 is to facilitate the feeding of materials into the groove position on the first limiting portion 111, and the purpose of setting the second opening 243 is to facilitate the feeding of materials into the sharp point at the position of the third limiting portion 113, thereby facilitating the feeding of materials to evenly enter various positions in the molding gap 23, thereby ensuring the yield rate of the molded products.

[0035] A spoiler 244 is disposed at the second opening 243 . The spoiler 244 is fixed on the fifth limiting portion 222 . The spoiler 244 is connected to the spoiler block 241 .

[0036] like Figure 8 As shown in the figure, the flat die leg of the molded product is pointed out at a. The purpose of setting the baffle 244 is to control the flow rate of the material supplied at the flat die leg, so as to facilitate the complete molding of the flat die leg on the molded product, thereby ensuring the molding quality of the molded product.

[0037] In this embodiment, the provision of the spoiler 244 ensures the accuracy of the quality of the finished product.

[0038] like Figure 3-Figure 5 As shown together, two oppositely disposed oblique inner grooves 13 are disposed above the narrow cavity 231 . The two oblique inner grooves 13 are inclined in opposite directions and are disposed on the inner walls of two opposite feed cavities 12 .

[0039] In this embodiment, the position of the oblique inner groove 13 is opposite to the position of the narrow cavity 231, so as to guide the feed material so that the narrow cavity 231 can be filled with the feed material as quickly as possible.

[0040] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A narrow cavity oblique inner rib flow balance mold, comprising an upper mold (1) and a lower mold (2), characterized in that: An inner mold (11) is fixed on the bottom surface of the upper mold (1), the shape of the inner mold (11) is adapted to the shape of the product, a plurality of feed cavities (12) are provided through the upper mold (1), and all the feed cavities (12) are arranged around the outer side of the inner mold (11); A feed welding chamber (21) is provided on the top surface of the lower mold (2), the shape and size of the feed welding chamber (21) are adapted to the outlet shapes of all the feed cavities (12), an outer mold hole (22) is provided through the bottom of the feed welding chamber (21), a molding gap (23) is formed between the inner mold part (11) and the inner wall of the outer mold hole (22), the shape of the molding gap (23) is adapted to the shape of the product, and a flow balance and flow resistance structure (24) is fixed to the top of the hole wall of the outer mold hole (22).

2. A narrow cavity oblique inner rib flow balance mold according to claim 1, characterized in that: The inner mold (11) comprises a first limiting portion (111), a second limiting portion (112) and a third limiting portion (113) which are separately arranged; a narrow cavity (231) is formed between the first limiting portion (111) and the second limiting portion (112); a fourth limiting portion (221) and a fifth limiting portion (222) are provided on the inner wall of the outer mold hole (22); the fourth limiting portion (221) is arranged between the second limiting portion (112) and the third limiting portion (113); and the fifth limiting portion (222) is arranged at an end of the third limiting portion (113) away from the second limiting portion (112).

3. A narrow cavity oblique inner rib flow balance mold according to claim 2, characterized in that: The flow balancing blocking structure (24) comprises a blocking block (241) fixed on the bottom wall of the feed welding chamber (21); the blocking block (241) has the same shape as the product; a first opening (242) and a second opening (243) are provided on the blocking block (241); the position of the first opening (242) corresponds to the position of the first limiting portion (111).

4. A narrow cavity oblique inner rib flow balance mold according to claim 3, characterized in that: A baffle plate (244) is provided at the second opening (243); the baffle plate (244) is fixed on the fifth limiting portion (222); and the baffle plate (244) is connected to the baffle block (241).

5. A narrow cavity oblique inner rib flow balance mold according to claim 4, characterized in that: Two oppositely arranged oblique inner grooves (13) are arranged above the narrow cavity (231). The two oblique inner grooves (13) are inclined in opposite directions. The two oblique inner grooves (13) are respectively arranged on the inner walls of two opposite feeding cavities (12).

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