CN213257102U - Precision metal batch injection molding die - Google Patents

Abstract

The utility model belongs to the mould field, in particular to a precision metal batch injection molding mould, which comprises a lower mould and an upper mould, wherein a plurality of mould cavities arranged in a descending ladder form are arranged in the lower mould, two adjacent mould cavities are communicated through an overflow hole which inclines downwards, and the bottom surface of the upper mould is respectively provided with a convex mould corresponding to each mould cavity position; the upper end of the guide rod penetrates through the upper die and is connected with the limiting block, and the lower end of the guide rod penetrates through the lower die; and a top plate is embedded in each caulking groove, and the bottom of each top plate is connected with the fixed rod through a top rod. The utility model discloses set up a plurality of die cavitys that are down ladder form range in the bed die, through two adjacent die cavitys of overflow hole intercommunication, when the injection, only need follow the injection hole injection solution that the highest point die cavity corresponds, can realize the solution injection in all die cavitys, can the batch demoulding simultaneously when the die sinking, simplify the operating procedure, but a plurality of work pieces of one-time forming improve batch production's work efficiency.

Description

Precision metal batch injection molding die

Technical Field

The utility model relates to a mould field specifically is an accurate metal is injection moulding mould in batches.

Background

Metal injection molding is a new powder metallurgy near-net-shape molding technology which is derived from the plastic injection molding industry, and as is well known, the plastic injection molding technology is low in price and can produce various products with complex shapes, but the strength of the plastic products is not high, and metal or ceramic powder can be added into plastic to obtain products with higher strength and good wear resistance in order to improve the performance of the plastic products. In recent years, this idea has evolved to maximize the content of solid particles and to completely remove the binder and densify the shaped body during the subsequent sintering process. This new powder metallurgy forming method is called metal injection molding.

At present, the injection molding mold of precise metal is mostly an independent molding structure, and when processing in batches, often rely on many sets of forming mold simultaneous working, the cost is higher, and every mould all needs to inject alone, and work efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an accurate metal is injection moulding mould in batches to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a precision metal batch injection molding mold comprises a lower mold and an upper mold, wherein the top surface of the lower mold is of a stepped structure, a plurality of mold cavities arranged in a descending stepped manner are arranged in the lower mold from left to right, two adjacent mold cavities are communicated through overflow holes which are inclined downwards, and a male mold is respectively matched and arranged at the position, corresponding to each mold cavity, of the bottom surface of the upper mold; two ends of the lower die vertically penetrate through a guide rod respectively, the upper end of the guide rod penetrates through the upper die and is connected with a limiting block, the lower end of the guide rod penetrates through the lower die, and a fixing rod is connected between the lower ends of the two guide rods; the bottom of each die cavity is recessed to form an embedding groove, a top plate is embedded into each embedding groove, and the bottom of each top plate is connected with a fixing rod right below the top plate through a top rod.

Preferably, the opposite ends of two adjacent overflow holes are at the same height position.

Preferably, the protruding length of each convex mould is increased from left to right, and the increasing length of each convex mould is equal to the decreasing height of each mould cavity.

Preferably, a guide groove for each ejector rod to pass through is formed in the lower die.

Preferably, the two ends of the lower die are symmetrically provided with lug plates, and the bottoms of the two lug plates are vertically provided with the support.

Preferably, the middle part of the male die corresponding to the highest die cavity is provided with an injection hole.

Preferably, the upper end of each die cavity extends upwards along the upper part of the overflow hole to form a cavity for accommodating the male die.

Preferably, when the top plate is embedded into the caulking groove, the surface of the top plate is flush with the corresponding inner wall of the mold cavity.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses set up a plurality of die cavitys that are down ladder form range in the bed die, through two adjacent die cavitys of overflow hole intercommunication, when the injection, only need follow the injection hole injection solution that the highest point die cavity corresponds, can realize the solution injection in all die cavitys, can the batch demoulding simultaneously when the die sinking, simplify the operating procedure, but a plurality of work pieces of one-time forming improve batch production's work efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. a lower die; 2. an upper die; 3. a mold cavity; 4. an overflow aperture; 5. a male die; 6. a guide bar; 7. a limiting block; 8. fixing the rod; 9. caulking grooves; 10. a top plate; 11. a top rod; 12. an ear plate; 13. a support; 14. and (4) injection holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1, the present invention provides a technical solution: a precision metal batch injection molding die comprises a lower die 1 and an upper die 2, wherein the top surface of the lower die 1 is of a stepped structure, a plurality of die cavities 3 arranged in a descending stepped manner are arranged in the lower die 1 from left to right, two adjacent die cavities 3 are communicated through inclined downward overflow holes 4, and a male die 5 is respectively arranged on the bottom surface of the upper die 2 at the positions corresponding to the die cavities 3 in a matched manner; two ends of the lower die 1 vertically penetrate through a guide rod 6 respectively, the upper end of the guide rod 6 penetrates through the upper die 2 and is connected with a limiting block 7, the lower end of the guide rod 6 penetrates through the lower die 1, and a fixing rod 8 is connected between the lower ends of the two guide rods 6; the bottom of each die cavity 3 is recessed inwards to form a caulking groove 9, a top plate 10 is embedded in each caulking groove 9, and the bottom of each top plate 10 is connected with a fixing rod 8 right below the top plate through a top rod 11.

Further, the opposite ends of two adjacent overflow holes 4 are at the same height position.

Further, the protruding length of each male die 5 increases from left to right, and the increasing length is equal to the decreasing height of each die cavity 3.

Furthermore, a guide groove for each ejector rod 11 to pass through is formed in the lower die 1.

Furthermore, two ends of the lower die 1 are symmetrically provided with lug plates 12, and the bottoms of the two lug plates 12 are vertically provided with a bracket 13.

Furthermore, the middle part of the male die 5 corresponding to the highest die cavity 3 is provided with an injection hole 14.

Furthermore, the upper end of each die cavity 3 extends upwards along the upper part of the overflow hole 4 to form a cavity for accommodating the male die 5.

Further, when the top plate 10 is inserted into the insertion groove 9, the surface thereof is flush with the inner wall of the corresponding mold cavity 3.

The working principle is as follows: when the mould works, the upper mould 2 is arranged on an external lifting mechanism to control the mould opening and closing; in the initial state, the guide rod 6, the fixed rod 8, the ejector rod 11 and the top plate 10 are integrally connected and sink under the action of gravity, at the moment, the top plate 10 is embedded in the caulking groove 9, the surface of the top plate is kept flush with the inner wall of the die cavity 3, and the top plate does not sink any more when reaching the end point of the downward moving stroke due to the limitation of the caulking groove 9.

During injection, the upper die 2 moves downwards to be embedded with the lower die 1, the male dies 5 are embedded into the corresponding die cavities 3, the bottom surfaces of the male dies 5 reach the upper edges of the corresponding overflow holes 4, quantitative molding solution is injected from the injection holes 14, and the solution sequentially flows into the die cavities 3 through the overflow holes 4 (the inner walls of the overflow holes 4 are provided with a layer of smooth non-stick coating) to finish the injection of the die cavities 3.

After the forming, the mold is opened, the upper mold 2 moves upwards, the upper mold moves upwards along the guide rod 6 to leave the lower mold 1, the upper mold continues to move upwards when reaching the position of the limit block 7 at the top of the guide rod 6, the guide rod 6 is pulled upwards, the fixing rod 8 moves upwards, the top of each top plate 10 is moved upwards through the ejector rod 11, the formed parts are ejected out of the mold cavity 3 in batches, and the demolding process is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. A precision metal batch injection molding die comprises a lower die (1) and an upper die (2), and is characterized in that the top surface of the lower die (1) is of a step-shaped structure, a plurality of die cavities (3) which are arranged in a descending step form are arranged in the lower die from left to right, two adjacent die cavities (3) are communicated through overflow holes (4) which are inclined downwards, and a male die (5) is respectively arranged on the bottom surface of the upper die (2) in a position corresponding to each die cavity (3) in a matching manner; two ends of the lower die (1) are respectively and vertically penetrated by a guide rod (6), the upper end of each guide rod (6) penetrates through the upper die (2) and is connected with a limiting block (7), the lower end of each guide rod penetrates out of the lower die (1), and a fixing rod (8) is connected between the lower ends of the two guide rods (6); the bottom of each die cavity (3) is inwards concave to form a caulking groove (9), a top plate (10) is embedded into each caulking groove (9), and the bottom of each top plate (10) is connected with a fixing rod (8) right below the top plate through a push rod (11).

2. The precision metal batch injection molding mold of claim 1, wherein: the opposite ends of two adjacent overflow holes (4) are at the same height position.

3. The precision metal batch injection molding mold of claim 1, wherein: the protruding length of each convex mould (5) is increased from left to right in sequence, and the increasing length of the convex mould is equal to the decreasing height of each mould cavity (3).

4. The precision metal batch injection molding mold of claim 1, wherein: and guide grooves for the ejector rods (11) to penetrate are formed in the lower die (1).

5. The precision metal batch injection molding mold of claim 1, wherein: the lower die (1) is symmetrically provided with lug plates (12) at two ends, and a support (13) is vertically arranged at the bottom of each lug plate (12).

6. The precision metal batch injection molding mold of claim 1, wherein: the middle part of the male die (5) corresponding to the highest die cavity (3) is provided with an injection hole (14).

7. The precision metal batch injection molding mold of claim 1, wherein: the upper end of each die cavity (3) extends upwards along the upper part of the overflow hole (4) to form a cavity for accommodating the male die (5).

8. The precision metal batch injection molding mold of claim 1, wherein: when the top plate (10) is embedded into the caulking groove (9), the surface of the top plate is flush with the inner wall of the corresponding die cavity (3).

Images