CN209888074U

CN209888074U - Automatic ejection mechanism of injection mold

Info

Publication number: CN209888074U
Application number: CN201920732445.7U
Authority: CN
Inventors: 王鸿翔
Original assignee: Huaian Vocational College of Information Technology
Current assignee: Huaian Vocational College of Information Technology
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-01-03
Anticipated expiration: 2029-05-21

Abstract

The utility model discloses an automatic ejection mechanism of injection mold, including the fixed die plate, the cover half bedplate, the runner cover, the movable mould board, the movable mould backing plate, cushion and ejection mechanism, the fixed die plate be located the lower surface of cover half bedplate and with cover half bedplate fixed connection, the last fixed surface of cover half bedplate is connected with the runner cover, the below of fixed die plate is equipped with the movable mould board that the contact is connected, the below fixedly connected with movable mould backing plate of movable mould board, the both sides fixedly connected with symmetric distribution's of movable mould backing plate cushion, fixedly connected with ejection mechanism between the cushion, ejection mechanism includes the fixed plate, ejector rod and axis of rotation, the surface of fixed plate is equipped with symmetric distribution's ejector rod. The utility model discloses a be equipped with gear drive's ejection mechanism in the bottom of movable mould, conveniently promote the product on mould surface in the injection mold die sinking, improve injection mold's drawing of patterns efficiency, and the ejector pin is direct not with the surface direct contact of product, can not leave the vestige on the surface of product.

Description

Automatic ejection mechanism of injection mold

Technical Field

The utility model relates to the technical field of mold, specifically be an automatic ejection mechanism of injection mold.

Background

The injection mould is characterized in that plastic is heated and melted in a heating charging barrel of an injection machine, is pushed by a screw or a stopper, enters a mould cavity through a nozzle and a pouring system of the mould, and is hardened and shaped in the mould cavity. Injection molds are used for molding thermoplastic articles, and for molding thermosets. Injection molding takes a large proportion in the molding of plastic products.

At present, when an injection mold on the market performs demolding operation on an injection molding finished product, an independent driving mechanism is usually needed to drive an ejection mechanism, the product is separated from the surface of the mold, mold opening and demolding cannot be performed simultaneously, the working efficiency of the injection mold is reduced, and the product is different from the mold in buckling degree, so that traces are easily left on the surface of the product. For this reason, a new technical solution needs to be designed for solution.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic ejection mechanism of injection mold is equipped with gear drive's ejection mechanism through the bottom at the movable mould, conveniently promotes the product on mould surface in the injection mold die sinking, improves injection mold's drawing of patterns efficiency, and the ejector pin is direct not with the direct contact in surface of product, can not leave the vestige on the surface of product.

In order to achieve the above object, the utility model provides a following technical scheme: an automatic ejection mechanism of an injection mold comprises a fixed mold plate, a fixed mold base plate, a sprue bush, a movable mold plate, a movable mold base plate, cushion blocks and an ejection mechanism, wherein the fixed mold plate is positioned on the lower surface of the fixed mold base plate and is fixedly connected with the fixed mold base plate, the upper surface of the fixed mold base plate is fixedly connected with the sprue bush, the movable mold plate in contact connection is arranged below the fixed mold plate, the movable mold base plate is fixedly connected below the movable mold plate, the cushion blocks are symmetrically distributed and fixedly connected on two sides of the movable mold base plate, the ejection mechanism is fixedly connected between the cushion blocks and comprises a fixed plate, ejection rods and a rotating shaft, the ejection rods are symmetrically distributed and are rotatably connected with the fixed plate, driven gears are fixedly connected at the bottom ends of the ejection rods, driving gears in meshing connection are arranged between the driven gears, and a transverse rotating shaft is arranged below the, the surface of the rotating shaft is fixedly connected with a bevel gear, the bevel gear is meshed with the driving gear, and two ends of the rotating shaft are rotatably connected with the cushion blocks.

As an improvement of the technical scheme, a sliding groove is formed in the cushion block, and a rack in sliding connection is arranged in the sliding groove.

As an improvement of the technical scheme, two ends of the rotating shaft penetrate through the cushion blocks and are fixedly connected with gears, and the gears are meshed with the racks.

As an improvement of the technical scheme, the ejector rod penetrates through the movable die plate and the movable die base plate, and the top of the ejector rod is provided with threads.

As an improvement of the technical scheme, the side wall of the driving gear is meshed with the driven gear through a plane gear, and the driving gear is meshed with the bevel gear through a bevel gear.

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

1. the utility model discloses a be equipped with gear drive's ejection mechanism in the bottom of movable mould, conveniently promote the product on mould surface in the injection mold die sinking, improve injection mold's drawing of patterns efficiency, and the ejector pin is direct not with the surface direct contact of product, can not leave the vestige on the surface of product.

2. The utility model discloses an upper end at the ejector pin is equipped with the screw thread, makes things convenient for the ejector pin ejecting with the product when rotating on the one hand, and on the other hand plays fixed effect to the product when the die sinking, is equipped with gear and rack through the both ends at the axis of rotation, improves the structural strength and the job stabilization nature of axis of rotation.

Drawings

Fig. 1 is a schematic side view of the automatic ejection mechanism of the injection mold according to the present invention;

FIG. 2 is a schematic side sectional view of the movable mold of the present invention;

FIG. 3 is the schematic view of the bottom half-section structure of the movable mold of the present invention.

In the figure: the device comprises a fixed die plate-1, a fixed die base plate-2, a sprue bush-3, a movable die plate-4, a movable die base plate-5, a cushion block-6, an ejection mechanism-7, a fixed plate-8, an ejection rod-9, a rotating shaft-10, a driven gear-11, a driving gear-12, a bevel gear-13, a gear-14, a rack-15, a chute-16 and a thread-17.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Please refer to fig. 1-3, the present invention provides a technical solution: an automatic ejection mechanism of an injection mold comprises a fixed mold plate 1, a fixed mold base plate 2, a sprue bush 3, a movable mold plate 4, a movable mold base plate 5, cushion blocks 6 and an ejection mechanism 7, wherein the fixed mold plate 1 is positioned on the lower surface of the fixed mold base plate 2 and is fixedly connected with the fixed mold base plate 2, the upper surface of the fixed mold base plate 2 is fixedly connected with the sprue bush 3, the movable mold plate 4 in contact connection is arranged below the fixed mold plate 1, the movable mold base plate 5 is fixedly connected below the movable mold plate 4, the cushion blocks 6 in symmetrical distribution are fixedly connected on two sides of the movable mold base plate 5, the ejection mechanism 7 is fixedly connected between the cushion blocks 6, the ejection mechanism 7 comprises a fixed plate 8, ejection rods 9 and a rotating shaft 10, the ejection rods 9 in symmetrical distribution are arranged on the surface of the fixed plate 8, the ejection rods 9 are rotatably connected with the fixed plate 8, and a, be equipped with meshing connection's drive gear 12 between the driven gear 11, the below of fixed plate 8 is equipped with horizontal axis of rotation 10, the fixed surface of axis of rotation 10 is connected with conical gear 13, conical gear 13 is connected with drive gear 12 meshing, the both ends and the cushion 6 of axis of rotation 10 rotate and are connected.

In a further improvement, as shown in fig. 2, a sliding groove 16 is arranged inside the cushion block 6, a rack 15 connected in a sliding manner is arranged in the sliding groove 16, and the sliding groove 16 and the rack 15 are arranged inside the cushion block 6, so that the rotating shaft 10 is conveniently driven to rotate when the movable die moves, and the ejection mechanism 7 is conveniently driven to work.

In a further improvement manner, as shown in fig. 2, two ends of the rotating shaft 10 penetrate through the cushion block 6 and are fixedly connected with gears 14, the gears 14 are meshed with the racks 15, the gears 14 are arranged at two ends of the rotating shaft 10, so that the rotating shaft 10 is conveniently driven to rotate, and meanwhile, the balance of stress at two ends of the rotating shaft 10 is improved.

Further improved, as shown in fig. 2, the ejector rod 9 penetrates through the movable die plate 4 and the movable die base plate 5, the top of the ejector rod is provided with a thread 17, the thread 17 is arranged at the top of the ejector rod 9, so that a product can be conveniently fixed during die opening, the effect of pulling the material rod is achieved, and meanwhile, the ejector rod 9 is reversely rotated, so that the product can be conveniently separated from the surface of the die.

Specifically, as shown in fig. 1-2, the side wall of the driving gear 12 is engaged with the driven gear 11 through a face gear, the driving gear 12 is engaged with the bevel gear 13 through a bevel gear, so that the rotation shaft 10 drives the driving gear 12 to rotate, the side wall of the driving gear 12 is engaged with the driven gear 11 through a face gear, so that the driving gear 12 drives the driven gear 11 to rotate, the ejection rod 9 is driven to rotate, and the material pushing work is conveniently completed.

The utility model discloses a fixed die plate-1, fixed die bedplate-2, sprue bush-3, movable die plate-4, movable die backing plate-5, cushion-6, ejection mechanism-7, fixed plate-8, ejector pin-9, axis of rotation-10, driven gear-11, drive gear-12, bevel gear-13, gear-14, rack-15, spout-16, screw thread-17, the part is general standard component or the part that technical staff in this field know, its structure and principle all can all be known or can be known through conventional experimental method through the technical manual, the utility model discloses through be equipped with gear 14 driven ejection mechanism 7 in the bottom of movable mould, conveniently promote the product on mould surface when the injection mould die sinking, improve injection mould's drawing of patterns efficiency, and the ejector rod 9 is not in direct contact with the surface of the product, so that no mark is left on the surface of the product.

The utility model discloses at the during operation, install injection mold on the injection machine, rack 15 is fixed on the injection machine base and corresponding with spout 16, inject in to the mould through runner cover 3, the injection is accomplished back injection machine and is separated movable mould and cover half, the movable mould is in the time of removing left, the gear 14 and the 15 contact of rack at axis of rotation 10 both ends are connected, it rotates to drive axis of rotation 10, utilize bevel gear 13 to drive the drive wheel rotation simultaneously, thereby it rotates to drive driven gear 11, make two ejector pins 9 begin to rotate, deviate from the product in the mould.

The product protected by the scheme is put into practical production and application at present, and particularly, the application on the die achieves certain success, so that the technical scheme of the product is obviously proved to be beneficial, meets social requirements, and is suitable for batch production and popularization and use.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an automatic ejection mechanism of injection mold, includes fixed die plate (1), cover half bedplate (2), sprue bush (3), movable mould board (4), movable mould backing plate (5), cushion (6) and ejection mechanism (7), its characterized in that: the fixed die plate (1) is located on the lower surface of the fixed die base plate (2) and is fixedly connected with the fixed die base plate (2), a sprue bush (3) is fixedly connected with the upper surface of the fixed die base plate (2), a movable die plate (4) in contact connection is arranged below the fixed die plate (1), a movable die base plate (5) is fixedly connected with the lower side of the movable die plate (4), cushion blocks (6) which are symmetrically distributed are fixedly connected with the two sides of the movable die base plate (5), an ejection mechanism (7) is fixedly connected between the cushion blocks (6), the ejection mechanism (7) comprises a fixed plate (8), an ejection rod (9) and a rotating shaft (10), the surface of the fixed plate (8) is provided with symmetrically distributed ejection rods (9), the ejection rod (9) is rotatably connected with the fixed plate (8) and is fixedly connected with a driven gear (11) at the bottom end, a driving gear (12) which is connected with the driven gear, the utility model discloses a cushion block (6) is connected with fixed plate (8), the below of fixed plate (8) is equipped with horizontal axis of rotation (10), the fixed surface of axis of rotation (10) is connected with conical gear (13), conical gear (13) are connected with drive gear (12) meshing, the both ends and the cushion (6) of axis of rotation (10) are rotated and are connected.

2. The automatic ejection mechanism of an injection mold according to claim 1, characterized in that: a sliding groove (16) is formed in the cushion block (6), and a rack (15) in sliding connection is arranged in the sliding groove (16).

3. The automatic ejection mechanism of an injection mold according to claim 1, characterized in that: two ends of the rotating shaft (10) penetrate through the cushion block (6) and are fixedly connected with a gear (14), and the gear (14) is meshed with the rack (15).

4. The automatic ejection mechanism of an injection mold according to claim 1, characterized in that: the ejector rod (9) penetrates through the movable die plate (4) and the movable die base plate (5), and the top of the ejector rod is provided with threads (17).

5. The automatic ejection mechanism of an injection mold according to claim 1, characterized in that: the side wall of the driving gear (12) is meshed with the driven gear (11) through a plane gear, and the driving gear (12) is meshed with the bevel gear (13) through a bevel gear.