CN221475933U - Injection mold for protective cover - Google Patents

Abstract

The utility model discloses a protective cover injection mold, which comprises a movable mold bottom plate, a fixed mold bottom plate, a movable mold block and a fixed mold block, wherein two symmetrically parallel mold legs are fixedly arranged on the movable mold bottom plate, a supporting plate is fixedly arranged on the upper side of each mold leg, the movable mold block is arranged on the upper side of the supporting plate, the fixed mold block is fixedly arranged on the lower side of the fixed mold bottom plate, a penetrating injection nozzle is arranged in the middle of the upper side of the fixed mold bottom plate, the movable mold block and the fixed mold block are matched and clamped to form a plurality of molding cavities, the lower end of the injection nozzle is communicated with each molding cavity through a split runner, a plurality of convex mold bodies are fixedly arranged on the upper side of the supporting plate, the convex mold bodies penetrate through the movable mold block and are in sliding connection with the movable mold block, a plurality of concave mold cavities are arranged on the lower side of the fixed mold block, and the convex mold bodies and the concave mold cavities are in clearance fit with the concave mold cavities one by one. When the mould is separated after injection molding, the spring contracts and pulls the pushing plate to move upwards, and the ejector rod pushes the movable module to move upwards to push the molded protective cover off the convex mould body, so that the mould can be separated and simultaneously demoulding is carried out, and the mould is convenient to use.

Description

Injection mold for protective cover

Technical Field

The utility model relates to the technical field of injection molds, in particular to a protective cover injection mold.

Background

The injection mold is very common in manufacturing liquid, has the advantages of high production speed, high efficiency and the like, and the principle is that the plastic material which is completely melted by stirring a screw rod is injected into a mold cavity by high pressure at a certain temperature, and the molded product is obtained after cooling and solidifying. The method is suitable for mass production of parts with complex shapes, and is one of important processing methods. At present, the plastic protective cover shown in fig. 1 is usually manufactured by adopting an injection mold, the protective cover is of a shell structure with one open side, and the injection molding solidification shrinkage and the male mold are firmly connected, so that the problem of difficult demolding exists.

Disclosure of utility model

The utility model aims to provide a protective cover injection mold for solving the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a safety cover injection mold, includes movable mould bottom plate, cover half bottom plate, movable mould, fixed mould piece, fixed mould is last fixed mounting to have two symmetry parallel mould feet on the movable mould bottom plate, and the upside fixed mounting of mould foot has the layer board, movable mould piece is installed in the upside of layer board, and cover half fixed mounting is in the downside of cover half bottom plate, the upside mid-mounting of cover half bottom plate has the injection nozzle that runs through, its movable mould piece and the matched block of fixed mould piece form a plurality of shaping die cavities, and a plurality of shaping die cavities are arranged according to rectangular array, the lower extreme of injection nozzle communicates with each shaping die cavity through runner, the upside fixed mounting of layer board has a plurality of protruding die bodies, the protruding die body runs through movable mould piece and rather than sliding connection, and the downside of cover half piece is equipped with a plurality of die cavities, protruding die body and die cavity one-to-one clearance fit and form the shaping die cavity, and the safety cover on the movable mould promotes protruding die body to take off.

Preferably, a rectangular pushing plate is arranged between the two die legs, vertical ejector rods are arranged at four corners of the upper side of the pushing plate, the upper ends of the ejector rods are fixedly connected with the bottom of the movable module, the ejector rods penetrate through the supporting plate and are in sliding connection with the supporting plate, a spring is connected between the upper side of the pushing plate and the bottom of the supporting plate, and the spring is used for applying upward tension to the pushing plate.

Preferably, the spring is sleeved on the ejector rod, a vertical guide rod is connected between the bottom of the bottom plate of the fixed die and the pushing plate, and the guide rod penetrates through the pushing plate and is in sliding connection with the pushing plate.

Compared with the prior art, the utility model has the beneficial effects that: when the mould is separated after injection molding, the spring contracts and pulls the pushing plate to move upwards, the ejector rod pushes the movable module to move upwards to push away the formed protective cover from the convex mould body, so that the mould can be separated and simultaneously released, the mould is convenient to use, a plurality of protective covers can be formed at one time, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of a protective cover;

FIG. 2 is a schematic perspective view of the present utility model;

FIG. 3 is a schematic side sectional view of the present utility model;

Fig. 4 is a schematic structural view of the movable module of the present utility model.

In the figure: 1. a movable mold bottom plate; 2. a fixed die bottom plate; 3. a mold foot; 4. a supporting plate; 5. a movable module; 6. a fixed module; 7. a pushing plate; 8. a convex mold body; 9. an injection nozzle; 10. a guide rod; 11. a push rod; 12. a spring; 13. a molding cavity; 14. and a flow dividing channel.

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.

Referring to fig. 2-4, the present utility model provides a technical solution: the utility model provides a safety cover injection mold, includes movable mould bottom plate 1, cover half bottom plate 2, movable mould 5, fixed mould piece 6, fixed mounting has two symmetrical parallel mould foot 3 on the movable mould bottom plate 1, and the upside fixed mounting of mould foot 3 has layer board 4, and movable mould piece 5 installs in the upside of layer board 4, and cover half 6 fixed mounting is in the downside of cover half bottom plate 2, and the upside mid-mounting of cover half bottom plate 2 has the injection nozzle 9 that runs through, and injection nozzle 9 is used for the injection machine butt joint. The movable module 5 and the fixed module 6 are matched and clamped to form a plurality of forming cavities 13, positioning rods are arranged at four corners of the upper side of the fixed module 6 and are matched and spliced with the fixed module 6, the plurality of forming cavities 13 are distributed in a rectangular array, the lower end of the injection nozzle 9 is communicated with each forming cavity 13 through a runner 14, molten plastic enters the forming cavity 13 through the runner 14 and is solidified into a protective cover, and a plurality of protective covers can be processed by injection molding at one time.

The upper side of layer board 4 fixed mounting has a plurality of protruding die bodies 8, and protruding die body 8 runs through movable mould piece 5 and sliding connection with it, and the downside of fixed mould piece 6 is equipped with a plurality of die cavity, and the terrace die body 8 and die cavity one-to-one clearance fit and form into die cavity 13, when movable mould piece 5 moved up, can once promote the drawing of patterns of all safety covers on the protruding die body 8. A rectangular material pushing plate 7 is arranged between the two die legs 3, and gaps with a certain size are arranged between two sides of the material pushing plate 7 and the die legs 3, so that the material pushing plate 7 can move up and down. The four corners of the upper side of the pushing plate 7 are provided with vertical ejector rods 11, the upper ends of the ejector rods 11 are fixedly connected with the bottom of the movable module 5, and the ejector rods 11 penetrate through the supporting plate 4 and are in sliding connection with the supporting plate. A spring 12 is connected between the upper side of the pushing plate 7 and the bottom of the supporting plate 4, the spring 12 is used for applying upward tension to the pushing plate 7, the spring 12 is sleeved on the ejector rod 11, a vertical guide rod 10 is connected between the bottom of the fixed die bottom plate 2 and the pushing plate 7, the guide rod 10 penetrates through the pushing plate 7 and is in sliding connection with the pushing plate 7, the pushing plate 7 is in a lower position during die assembly, and the spring 12 is in a stretching state.

Working principle: in use, molten plastic is injected through the injection nozzle and enters each molding cavity 13 through the runner 14 to be solidified and molded into a protective cover, a cooling water channel is arranged in the fixed mold block 6, and circulated cooling water is connected in parallel to improve the cooling rate. During die separation, the spring 12 contracts and pulls the pushing plate 7 to move upwards, the ejector rod 11 pushes the movable module 5 to move upwards, the port of the protective cover is in contact with the movable module 5, and the movable module 5 moves upwards to push the protective cover away from the male die body 8, so that the die separation can be performed while die separation is performed, and the die separation device is convenient to use.

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

Claims (3)

1. The utility model provides a safety cover injection mold, includes movable mould bottom plate (1), cover half bottom plate (2), movable module (5), cover half module (6), and fixed mounting has two symmetrical parallel mould foot (3) on movable mould bottom plate (1), and the upside fixed mounting of mould foot (3) has layer board (4), movable module (5) are installed in the upside of layer board (4), and cover half module (6) fixed mounting is in the downside of cover half bottom plate (2), the upside mid-mounting of cover half bottom plate (2) has injection nozzle (9) that run through, its characterized in that: the movable module (5) and the fixed module (6) are matched and clamped to form a plurality of forming cavities (13), the forming cavities (13) are distributed according to a rectangular array, the lower ends of the injection nozzles (9) are communicated with the forming cavities (13) through distribution channels (14), a plurality of convex mold bodies (8) are fixedly arranged on the upper sides of the supporting plates (4), the convex mold bodies (8) penetrate through the movable module (5) and are in sliding connection with the movable module, a plurality of concave mold cavities are arranged on the lower sides of the fixed module (6), the convex mold bodies (8) are in clearance fit with the concave mold cavities one by one to form the forming cavities (13), and the movable module (5) pushes the protective cover on the convex mold bodies (8) to be demolded.

2. The protective cover injection mold of claim 1, wherein: two be equipped with rectangle's ejector pad (7) between mould foot (3), the upside four corners of ejector pad (7) is equipped with vertical ejector pin (11), the upper end of ejector pin (11) and the bottom fixed connection of movable mould piece (5), ejector pin (11) run through layer board (4) and rather than sliding connection, are connected with spring (12) between the bottom of the upside of ejector pad (7) and layer board (4), and spring (12) are used for applys ascending pulling force to ejector pad (7).

3. The protective cover injection mold of claim 2, wherein: the spring (12) is sleeved on the ejector rod (11), a vertical guide rod (10) is connected between the bottom of the fixed die bottom plate (2) and the pushing plate (7), and the guide rod (10) penetrates through the pushing plate (7) and is in sliding connection with the pushing plate.