CN219171535U - Mould with bottom capable of being penetrated - Google Patents

Abstract

The utility model discloses a die with a penetrable bottom surface, which comprises a die support, wherein a fixed die holder and a movable die holder which are oppositely arranged are arranged in the die support, an injection molding cavity is formed after the fixed die holder and the fixed die holder are clamped, a through hole communicated with the injection molding cavity is formed in the movable die holder, a penetrable insert is slidably arranged in the through hole, one end, far away from the injection molding cavity, of the penetrable insert is provided with a driving piece, and the driving piece is used for driving the penetrable insert to be in a butting mode against the bottom surface of the injection molding cavity; the mold with the bottom capable of being bumped is convenient for adjusting the length of the bumped insert, the height of the bumped insert can be prevented from being too high, the upper mold base and the lower mold base cannot be assembled, an injection molding cavity cannot be formed, and because the bumped insert is bumped and worn in the long-term use process, the bumped surface cannot contact the bottom surface of the injection molding cavity, gaps are formed between the bumped surface and the bottom of the cavity, and the plastic is easy to run between the gaps in the injection molding process, so that the product is partially multi-glued and cannot be used.

Description

Mould with bottom capable of being penetrated

Technical Field

The utility model relates to the technical field of dies, in particular to a die with a bottom surface capable of being penetrated.

Background

In the injection molding process of the mold, through holes, including circular holes, square holes, and polygonal holes, are generally formed according to the needs of the castings. The bump is that the die surface of the hole site part is bumped after die assembly, so that the injection liquid can not flow at the position, and the product is cast to form the required hole site. As shown in fig. 1, a mold for a conventional injection molding hardware plate process comprises an upper mold core 1 and a lower mold core 2, wherein after the upper mold core 1 and the lower mold core 2 are assembled, a gap between the upper mold core 1 and the lower mold core 2 forms a product cavity 3. The insert 4 forming the penetration surface is usually designed to be integrally formed with the upper mold core 1 or the lower mold core 2, and is tightly attached mainly by virtue of the mold locking force of an injection molding machine, so that the penetration effect is achieved, and a through hole can be formed on an injection molded product.

The punching insert integrally formed with the mold core has high requirements on the punching surface height and the direction processing precision, and if the height is too high, the upper mold core and the lower mold core cannot be assembled, so that a product cavity cannot be formed; if the height is too low, the punching surface can not contact the bottom of the cavity, gaps are formed between the punching surface and the bottom of the cavity, the plastic is easy to run between the gaps in the injection molding process, so that the product is partially multi-glue and can not be used, after the injection molding is finished, the injection molding product can be coated and adhered on the periphery of the punching insert, and the injection molding product is not easy to take out from the cavity.

Disclosure of Invention

The utility model aims to provide a die with a penetrable bottom surface, which is convenient for adjusting the length of a penetrable insert, so that the penetrable surface always contacts the bottom of a die cavity, and an injection molding product can be quickly taken out from the die cavity, thereby solving the problems in the prior art.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides a mould that bottom surface can bump, includes the mould support, lay fixed die seat and the movable die seat that set up relatively in the mould support, form the die cavity of moulding plastics after movable die seat and the fixed die seat compound die, set up the through-hole with the die cavity intercommunication of moulding plastics in the movable die seat, slide in the through-hole and set up and bump the mold insert, bump the mold insert and keep away from the one end of die cavity of moulding plastics and be provided with the driving piece, the driving piece is used for the drive to bump the mold insert and contradict the die cavity bottom surface of moulding plastics.

As a further scheme of the utility model: at least two hydraulic cylinders are uniformly distributed in the die support, lifting plates are fixedly arranged at the telescopic ends of the hydraulic cylinders, guide posts are respectively arranged at four corners of the top of each lifting plate, one end, far away from each lifting plate, of each guide post penetrates through the movable die holder and is movably inserted into guide holes formed in the fixed die holder, and the movable die holder is fixedly sleeved on each guide post.

As a further scheme of the utility model: a demoulding mechanism is arranged between the lifting plate and the movable mould base, and comprises:

the stripper plate is movably arranged at the top of the lifting plate, four corners of the stripper plate are respectively movably sleeved on corresponding guide posts, the bottom of the stripper plate is fixedly provided with a stripper post, and the bottom end of the stripper post movably penetrates through the lifting plate;

the stripper plates are uniformly and fixedly arranged at the top of the stripper plate, and the top ends of the stripper plates penetrate through the movable die base and are attached to injection products in the injection molding cavity;

and the springs are fixedly arranged between the stripper plate and the movable die seat.

As a further scheme of the utility model: the demolding mechanism further comprises a supporting block fixedly arranged in the mold support, and the supporting block is located under the demolding column.

As a further scheme of the utility model: the driving piece is an electric telescopic rod fixedly mounted on the movable die holder, and the telescopic end of the electric telescopic rod is fixedly connected with one end, far away from the injection molding cavity, of the touch-through insert.

As a further scheme of the utility model: a sealing ring is arranged in one end, far away from the driving piece, of the through hole, and the sealing ring is in airtight fit with the periphery of the touch-through insert.

The utility model has at least the following beneficial effects:

(1) Through set up adjustable insert that bumps in the movable mould base, after movable mould base and cover half seat compound die form the die cavity of moulding plastics, rethread driver drive bumps the insert and removes to the die cavity bottom surface of moulding plastics and form and bump and wear, be convenient for bump the length of wearing the insert and adjust, and can avoid bumping the insert height too high, upper die base and die holder can not the compound die, can't form the die cavity of moulding plastics, and because bump the wearing and tearing in the mold insert long-term use, lead to bumping the face and can't contact the die cavity bottom surface of moulding plastics, bump the face and the die cavity bottom has the gap, the plastic is easy to run this gap in the injection molding process and is led to the fact the local multi-glue of product can't use, thereby improve the quality of injection molding product and the life of mould.

(2) Through setting up demoulding mechanism, after the completion of moulding plastics, the drawing of patterns post moves down to contradict on the mould support, and the drawing of patterns post jack-up with the stripper plate, spring compression, stripper plate promote a plurality of drawing of patterns poles and move up, and a plurality of drawing of patterns poles are separated from the driven die holder of injection moulding product from a plurality of positions to with injection moulding product drawing of patterns fast, reach the purpose of injection moulding product quick drawing of patterns.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of a prior art touch insert;

FIG. 2 is a schematic view of the overall structure of the present utility model when the mold is closed;

FIG. 3 is a schematic view of the structure of the fixed die holder and the movable die holder of the utility model;

FIG. 4 is a schematic view of the overall structure of the present utility model at the time of demolding.

In the figure: 1. an upper mold core; 2. a lower mold core; 3. a product cavity; 4. touching through the insert; 5. a mold support; 6. a fixed die holder; 7. a movable die holder; 8. an injection molding cavity; 9. a through hole; 10. a driving member; 11. a hydraulic cylinder; 12. a lifting plate; 13. a guide post; 14. a guide hole; 15. removing the template; 16. demoulding column; 17. a stripper rod; 18. a spring; 19. a seal ring; 20. and a supporting block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the utility model provides a bottom surface-penetrable mold, which comprises a mold support 5, wherein the mold support 5 is arranged on an external injection molding machine, a fixed mold seat 6 and a movable mold seat 7 which are oppositely arranged are arranged in the mold support 5, the movable mold seat 7 can reciprocate relative to the fixed mold seat 6, an injection molding cavity 8 is formed after the fixed mold seat 6 and the fixed mold seat 7 are assembled, the injection molding machine injects plastic into the injection molding cavity 8, the plastic forms an injection molding product in the injection molding cavity 8, a through hole 9 communicated with the injection molding cavity 8 is formed in the injection molding cavity 7, a penetrating insert 4 is arranged in the through hole 9 in a sliding manner, the shape of the penetrating insert 4 can be cylindrical, rectangular or polygonal, and the like, the specific shape of the penetrating insert 4 is determined according to the requirements of an injection molding product which is actually produced, one end of the penetrating insert 4 far away from the injection molding cavity 8 is provided with a driving piece 10, the driving piece 10 is used for driving the penetrating insert 4 to collide to the bottom surface of the injection molding cavity 8, after the movable mold seat 7 and the fixed mold seat 6 are assembled, the driving piece 10 drives the penetrating insert 4 to move towards the injection molding cavity 8, the penetrating insert 4 is far from the end surface of the injection molding cavity 8, and the penetrating insert 9 is far from the end surface of the injection molding cavity 8.

After the movable die holder 7 and the fixed die holder 6 are assembled to form the injection molding cavity 8, the punching insert 4 is driven to move to the bottom surface of the injection molding cavity 8 to form punching, the punching insert 4 is arranged to be higher than the punching insert 4 integrally formed with the die core, the punching insert 4 can be prevented from being too high, the upper die holder and the lower die holder cannot be assembled to form the injection molding cavity 8, the punching surface cannot contact the bottom surface of the injection molding cavity 8 due to punching abrasion in the long-term use process of the punching insert 4, gaps are formed between the punching surface and the bottom of the injection molding cavity, partial multi-glue products cannot be used due to the fact that plastic is easy to run between the gaps in the injection molding process, and the length of the punching insert 4 can be conveniently adjusted by the driving piece 10.

At least two hydraulic cylinders 11 are uniformly distributed in the die support 5, lifting plates 12 are fixedly arranged at the telescopic ends of the hydraulic cylinders 11, the hydraulic cylinders 11 are used for driving the lifting plates 12 to reciprocate in the die support 5, four corners of the tops of the lifting plates 12 are respectively provided with a guide post 13, one end, far away from the lifting plates 12, of each guide post 13 penetrates through the movable die holder 7 and is movably inserted into a guide hole 14 formed in the fixed die holder 6, the movable die holder 7 is fixedly sleeved on each guide post 13, the lifting plates 12 reciprocate to drive the movable die holder 7 to reciprocate, and the movable die holder 7 reciprocates to complete die assembly and die separation of the fixed die holder 6.

Further, a demoulding mechanism is arranged between the lifting plate 12 and the movable mould base 7, the demoulding mechanism comprises a demoulding plate 15, a plurality of demoulding rods 17 and a plurality of springs 18, the demoulding plate 15 is movably arranged at the top of the lifting plate 12, four corners of the demoulding plate 15 are respectively movably sleeved on corresponding guide posts 13, a demoulding post 16 is fixedly arranged at the bottom of the demoulding plate 15, and the bottom end of the demoulding post 16 movably penetrates through the lifting plate 12; the plurality of demoulding rods 17 are uniformly and fixedly arranged at the top of the demoulding plate 15, and the top ends of the demoulding rods 17 penetrate through the movable mould base 7 and are attached to injection products in the injection mould cavity 8; a spring 18 is sleeved on each demoulding rod 17, and the spring 18 is fixedly arranged between the demoulding plate 15 and the movable mould base 7.

As shown in fig. 4, after injection molding is completed, the hydraulic cylinder 11 is started to drive the lifting plate 12 to move downwards, the guide post 13 drives the movable die holder 7 to move downwards so as to separate the movable die holder 7 from the fixed die holder 6, when the demolding post 16 moves downwards to abut against the die support 5, the demolding post 16 jacks up the demolding plate 15, the springs 18 compress, the demolding plate 15 pushes the plurality of demolding rods 17 to move upwards, and the plurality of demolding rods 17 separate the injection molded product from the movable die holder 7 from a plurality of points, so that the injection molded product is quickly demolded.

As shown in fig. 2, when the mold is closed, the hydraulic cylinder 11 drives the lifting plate 12 to move upwards, the spring 18 automatically recovers, the stripper plate 15 moves downwards to be attached to the top of the lifting plate 12 under the action of the elastic force of the spring 18, and at the moment, the end face of the stripper rod 17, which is far away from the stripper plate 15, is just positioned on the same horizontal plane with the end face of the injection molding cavity 8.

Preferably, the demoulding mechanism further comprises a supporting block 20 fixedly arranged in the mould bracket 5, the supporting block 20 is located under the demoulding column 16, when the demoulding column 16 moves downwards, the supporting block 20 props against the demoulding column 16, long-term collision between the demoulding column 16 and the mould bracket 5 is avoided, the mould bracket 5 is not easy to maintain due to abrasion, and preferably, the supporting block 20 is arranged on the mould bracket 5 in a detachable and fixedly mounted mode, so that the supporting block 20 is convenient to replace.

Preferably, the driving piece 10 sets up to fixed mounting electric telescopic handle on movable mould base 7, electric telescopic handle flexible end and bump the one end fixed connection who wears mold insert 4 to keep away from injection molding die cavity 8, bump the flexible of mold insert 4 through electric telescopic handle control, be convenient for bump the regulation of mold insert 4 length, further, can bump the terminal surface of mold insert 4 and inlay and establish pressure sensor, pressure sensor and electric telescopic handle electric connection, when bump mold insert 4 conflict and paste tightly to injection molding die cavity 8 bottom surface, pressure sensor detects the pressure and sends the closing signal to electric telescopic handle, electric telescopic handle stops.

In order to prevent plastic from entering the through hole 9 during injection molding, a sealing ring 19 is arranged in the end of the through hole 9 away from the driving piece 10, and the sealing ring 19 is in airtight fit with the periphery of the touch-through insert 4.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present utility model.

In addition, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "coupled," and the like should be construed broadly, and may be, for example, fixedly attached, detachably attached, or integrally attached; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The foregoing detailed description of the preferred embodiments of the utility model should not be taken as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims (6)

1. The utility model provides a mould that bottom surface can bump, includes mould support (5), lay fixed die seat (6) and movable die seat (7) that set up relatively in mould support (5), form injection molding die cavity (8), its characterized in that after movable die seat (7) and fixed die seat (6) compound die:

the novel plastic injection mold comprises a movable mold seat (7), and is characterized in that a through hole (9) communicated with an injection molding cavity (8) is formed in the movable mold seat (7), a through hole (9) is internally provided with a through insert (4) in a sliding mode, one end, away from the injection molding cavity (8), of the through insert (4) is provided with a driving piece (10), and the driving piece (10) is used for driving the through insert (4) to abut against the bottom surface of the injection molding cavity (8).

2. The die with the collision-through bottom surface according to claim 1, characterized in that at least two hydraulic cylinders (11) are uniformly arranged in the die support (5), lifting plates (12) are fixedly arranged at telescopic ends of the hydraulic cylinders (11), guide columns (13) are respectively arranged at four corners of the tops of the lifting plates (12), one ends, far away from the lifting plates (12), of the guide columns (13) penetrate through movable die holders (7) and are movably inserted into guide holes (14) formed in fixed die holders (6), and the movable die holders (7) are fixedly sleeved on the guide columns (13).

3. A bottom-side-accessible mold according to claim 2, characterized in that a demolding mechanism is provided between the lifting plate (12) and the movable mold holder (7), said demolding mechanism comprising:

the stripper plate (15) is movably arranged at the top of the lifting plate (12), four corners of the stripper plate (15) are respectively and movably sleeved on corresponding guide posts (13), a stripper post (16) is fixedly arranged at the bottom of the stripper plate (15), and the bottom end of the stripper post (16) movably penetrates through the lifting plate (12);

the demolding rods (17) are uniformly and fixedly arranged at the top of the demolding plate (15), and the top ends of the demolding rods (17) penetrate through the movable mold base (7) and are attached to an injection molding product in the injection molding cavity (8);

and a plurality of springs (18), wherein each demoulding rod (17) is sleeved with one spring (18), and the springs (18) are fixedly arranged between the demoulding plate (15) and the movable mould base (7).

4. A bottom-side-flushable mould according to claim 3, characterized in that the demoulding mechanism further comprises a support block (20) fixedly arranged in the mould holder (5), the support block (20) being located directly below the demoulding column (16).

5. The bottom surface-penetrable die according to claim 1, wherein the driving member (10) is an electric telescopic rod fixedly mounted on the movable die holder (7), and the telescopic end of the electric telescopic rod is fixedly connected with one end of the penetration insert (4) far away from the injection molding cavity (8).

6. A bottom-side-pierceable die according to claim 1, wherein a sealing ring (19) is provided in the end of the through hole (9) remote from the driving member (10), said sealing ring (19) being air-tightly fitted to the periphery of the piercing insert (4).

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