CN210651681U - Injection mold of screw tooth lid - Google Patents

Abstract

The utility model discloses an injection mold of screw thread lid, including first die holder and the second die holder that possesses the compound die displacement, first die holder is equipped with at least one first model cavity, the second die holder is equipped with the second model cavity that matches with first model cavity one-to-one, first model cavity forms the appearance chamber of moulding plastics of screw thread lid with second model cavity, be equipped with flexible type pole in the second model cavity, be equipped with the screw thread shaping end that is used for the internal thread structure shaping on the flexible type pole, be equipped with the screens type portion that is used for the shaping of screens groove in the second model cavity, flexible type pole possesses flexible displacement and the rotary displacement towards first model cavity. The utility model discloses can realize the one shot injection moulding of screw tooth lid, and screw tooth shaping end can be automatic with the internal thread structure phase separation of shaping work piece, satisfy the demand of unloading of injection moulding work piece. The rotary driving source can simultaneously carry out combined driving on a plurality of stations, and the synchronous operation requirements of the stations are met. The batch injection molding operation of the screw tooth cover is easy to realize.

Description

Injection mold of screw tooth lid

Technical Field

The utility model relates to an injection mold of thread lid belongs to injection mold's technical field.

Background

An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

At present, a thread cover workpiece exists, the thread cover workpiece comprises a flying saucer-shaped main body, an internal thread structure is arranged in a hollow cavity of the flying saucer-shaped main body, a forming die cannot achieve forming of the thread cover traditionally, and the forming workpiece needs to be manually screwed and disassembled after the design of a free-form injection molding cavity is adopted, so that the thread cover workpiece is very complex.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough of above-mentioned prior art, can't realize this thread lid injection moulding's problem to current injection mold, provide an injection mold of thread lid.

In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:

an injection mold of a screw cap, the screw cap comprises a flying saucer-shaped main body, an internal thread structure is arranged in a hollow cavity of the flying saucer-shaped main body,

a plurality of clamping grooves are arranged on the annular end surface of the internal thread structure,

the injection mold comprises a first mold base and a second mold base which are provided with mold closing displacement,

the first die holder is provided with at least one first model cavity, the second die holder is provided with second model cavities which are correspondingly matched with the first model cavities one by one, the first model cavities and the second model cavities form an outer-shape injection molding cavity of the screw tooth cover,

a telescopic rod is arranged in the second model cavity, a thread forming end for forming the internal thread structure is arranged on the telescopic rod, a clamping type part for forming the clamping groove is arranged in the second model cavity,

the telescopic rod has a telescopic displacement and a rotational displacement toward the first mold chamber.

Preferably, the telescopic rod comprises a telescopic rod sleeve with self-rotation displacement and a rod body with directional elastic telescopic displacement in the telescopic rod sleeve, the thread forming end is arranged on the free end of the rod body,

and a rotary driving source for driving the telescopic rod sleeve to rotate is arranged in the second die holder.

Preferably, the rotary drive source comprises a rotary motor and a driven fluted disc arranged on the telescopic rod sleeve, and a driving fluted disc meshed with the driven fluted disc is arranged at the rotating end of the rotary motor.

Preferably, the second die holder is provided with at least two second die cavities, and the driving fluted disc is meshed with the driven fluted disc on the telescopic rod sleeve in any of the second die cavities.

Preferably, one end of the hollow cavity is provided with a narrow-mouth end, a convex column for forming the narrow-mouth end is arranged in the first model cavity,

and in a die assembly state, the end surface of the convex column is abutted with the end surface of the thread forming end.

The beneficial effects of the utility model are mainly embodied in that:

1. the one-time injection molding of the screw tooth cover can be realized, and the screw tooth forming end can be automatically separated from the internal thread structure of the formed workpiece, so that the unloading requirement of the injection molded workpiece is met.

2. The rotary driving source can simultaneously carry out combined driving on a plurality of stations, and the synchronous operation requirements of the stations are met.

3. The overall design is simple and ingenious, and the batch injection molding operation of the screw tooth covers is easy to realize.

Drawings

Fig. 1 is a perspective structural diagram of a mold closing state of an injection mold for a screw cap according to the present invention.

Fig. 2 is a schematic structural diagram of the first mold base of the present invention.

Fig. 3 is a schematic structural view of the second mold base after mold splitting of the present invention.

Fig. 4 is a schematic structural view of the middle screw cap of the present invention.

Fig. 5 is another view structure diagram of the middle screw cap of the present invention.

Detailed Description

The utility model provides an injection mold of thread lid. The technical solution of the present invention will be described in detail below with reference to the accompanying drawings so as to be easier to understand and grasp.

An injection mold for a screw cap, as shown in fig. 4 and 5, the screw cap includes a flying saucer-shaped main body 10, an internal thread structure 12 is provided in a hollow cavity 11 of the flying saucer-shaped main body 10, and a plurality of retaining grooves 13 are provided on an annular end surface of the internal thread structure 12.

As shown in fig. 1 to 3, the injection mold includes a first mold base 1 and a second mold base 2 having a mold clamping displacement.

The first die holder 2 is provided with at least one first die cavity 3, the second die holder 2 is provided with second die cavities 4 which are matched with the first die cavities 3 in a one-to-one correspondence mode, and the first die cavities 3 and the second die cavities 4 form an outer-shape injection molding cavity of the screw cap.

A telescopic rod 5 is arranged in the second model cavity 4, a thread forming end 6 used for forming an internal thread structure is arranged on the telescopic rod 5, and a clamping section 7 used for forming a clamping groove is arranged in the second model cavity 4.

The telescopic rod 5 has a telescopic displacement and a rotational displacement toward the first mold chamber 3.

Specifically, when the first die holder 1 and the second die holder 2 are clamped, an injection cavity of the screw cap is formed among the screw forming end 6 of the telescopic rod 5, the first mold cavity 3, and the second mold cavity 4.

After the injection molding is completed, the first mold base 1 and the second mold base 2 are separated, the screw tooth cover is located on the second mold base 2, and the screw tooth forming end 6 is separated from the internal thread structure 12 of the screw tooth cover through the rotation and retraction operation of the telescopic rod 5.

After the thread forming end 6 is separated from the internal thread structure 12, the thread cover can be directly drawn and unloaded conveniently and quickly without manual rotation for unloading.

As shown in fig. 1, in one embodiment, the telescopic rod 5 includes a telescopic sleeve 51 having self-rotation displacement and a rod 52 having directional elastic telescopic displacement in the telescopic sleeve 51, the thread forming end 6 is disposed on the free end of the rod 52, and the second die holder 2 is provided with a rotation driving source 8 for driving the telescopic sleeve 51 to rotate.

Specifically, during the mold closing operation, the rod 52 is in the extended limit state, and the thread forming end 6 of the rod 52 performs cavity filling forming, that is, forming of the internal thread structure 12.

After the injection molding is finished and the die is separated, the rotary driving source 8 drives the telescopic rod sleeve 51 to rotate at the moment, the telescopic rod sleeve 51 drives the rod body 52 to rotate, the thread cover is rotationally fixed by the clamping type part 7 at the moment, and thread movement is generated between the thread forming end 6 and the internal thread structure 12 of the thread cover, so that the thread forming end 6 generates retraction displacement relative to the telescopic rod sleeve 51, and is separated from the internal thread structure 12, and the operation requirement of drawing and unloading is met.

In one embodiment, the rotation driving source 8 includes a rotation motor 81 and a driven gear 82 disposed on the telescopic rod 51, and a driving gear 83 engaged with the driven gear 82 is disposed on a rotation end of the rotation motor 81.

Namely, the driving fluted disc 83 and the driven fluted disc 82 are matched to realize the rotation driving of the telescopic rod sleeve 51.

In one embodiment, the second die holder 2 is provided with at least two second die cavities 4, and the driving toothed disc 83 is engaged with the driven toothed disc 82 on the telescopic rod sleeve 51 in any of the second die cavities 4.

The combined driving of a plurality of stations can be realized through a motor, and the matching structure is simple and reliable.

In one embodiment, one end of the hollow cavity 11 has a narrow end 14, a convex pillar 31 for forming the narrow end is arranged in the first mold cavity 3, and in a mold closing state, an end surface of the convex pillar 31 abuts against an end surface of the thread forming end 6.

The telescopic limit of the rod body 52 can be realized through the matching of the convex column 31 and the thread forming end 6, and the limit structure of the rod body 52 is not required to be additionally arranged.

Can discover through the above description, the utility model relates to an injection mold of screw tooth lid can realize the one shot injection moulding of screw tooth lid, and the screw tooth shaping end can be automatic with the internal thread structure phase separation of shaping work piece, satisfies the demand of unloading of injection moulding work piece. The rotary driving source can simultaneously carry out combined driving on a plurality of stations, and the synchronous operation requirements of the stations are met. The overall design is simple and ingenious, and the batch injection molding operation of the screw tooth covers is easy to realize.

The above technical solutions of the present invention have been fully described, and it should be noted that the present invention is not limited by the above description, and all technical solutions formed by equivalent transformation or equivalent transformation adopted by the spirit of the present invention in the aspects of structure, method or function by those of ordinary skill in the art all fall within the protection scope of the present invention.

Claims (5)

1. The utility model provides an injection mold of thread lid, thread lid includes flying saucer form main part, be equipped with internal thread structure, its characterized in that in the well cavity of flying saucer form main part:

a plurality of clamping grooves are arranged on the annular end surface of the internal thread structure,

the injection mold comprises a first mold base and a second mold base which are provided with mold closing displacement,

the first die holder is provided with at least one first model cavity, the second die holder is provided with second model cavities which are correspondingly matched with the first model cavities one by one, the first model cavities and the second model cavities form an outer-shape injection molding cavity of the screw tooth cover,

a telescopic rod is arranged in the second model cavity, a thread forming end for forming the internal thread structure is arranged on the telescopic rod, a clamping type part for forming the clamping groove is arranged in the second model cavity,

the telescopic rod has a telescopic displacement and a rotational displacement toward the first mold chamber.

2. The injection mold of the screw cap according to claim 1, wherein:

the telescopic rod comprises a telescopic rod sleeve with self-rotation displacement and a rod body with directional elastic telescopic displacement in the telescopic rod sleeve, the thread forming end is arranged on the free end of the rod body,

and a rotary driving source for driving the telescopic rod sleeve to rotate is arranged in the second die holder.

3. The injection mold for the screw cap according to claim 2, wherein:

the rotary driving source comprises a rotary motor and a driven fluted disc arranged on the telescopic rod sleeve, and a driving fluted disc meshed with the driven fluted disc is arranged at the rotating end of the rotary motor.

4. An injection mold for a screw cap according to claim 3, wherein:

and the second die holder is provided with at least two second die cavities, and the driving fluted disc is meshed with the driven fluted disc on the telescopic rod sleeve in any second die cavity.

5. The injection mold of the screw cap according to claim 1, wherein:

one end of the hollow cavity is provided with a narrow-mouth end, a convex column for forming the narrow-mouth end is arranged in the first model cavity,

and in a die assembly state, the end surface of the convex column is abutted with the end surface of the thread forming end.

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