CN213198449U - Demoulding push-out device - Google Patents

Abstract

The utility model belongs to the technical field of the gold type shaping, a drawing of patterns ejecting device is disclosed. Comprises a drag hook mechanism and a mould; the draw hook mechanism is arranged on one side of the die and comprises a draw hook, a spring and a draw hook supporting frame; one end of the drag hook is connected with the drag hook supporting frame, and the other end of the drag hook is connected with the spring. The device has realized the miniaturization of mould, especially the reduction of mould thickness, has simple structure, reduce cost, the advantage of the dismouting of being convenient for maintain.

Description

Demoulding push-out device

Technical Field

The utility model belongs to the technical field of the gold type shaping, the utility model relates to a drawing of patterns release device.

Background

Before the plastic product is taken off from the mould, a process of stripping from the formed part of the mould is provided, and a mechanism for stripping the plastic part from the formed part is called a demoulding and ejecting mechanism. At present, the push-out of products in the mold manufacturing industry is mostly finished by one-time action.

However, some products have complicated structures, thin walls and deep cavities, and because the contact area between a plastic part and a mold cavity is large, the demolding force is also large, the demolding force must be dispersed by demolding twice to prevent deformation, or the requirements on the appearance of some products are strict, and the pushing marks are not allowed. Therefore, secondary ejection is necessary for such products to disperse the mold release force and allow smooth mold release. This mechanism for releasing a product by two ejection actions is called a two-stage release ejector mechanism. The double-push-plate two-stage ejecting mechanism is a mechanism which utilizes two push plates to respectively drive a group of ejecting parts to realize two-stage ejecting, and the commonly designed structure is that a pair of splayed swinging block styles are arranged on a first-stage push plate and a second-stage push plate.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough among the above-mentioned background art, providing a drawing of patterns ejecting device, the device has realized the miniaturization of mould, especially the reduction of mould thickness, has simple structure, reduce cost, the advantage of the maintenance dismouting of being convenient for.

The utility model provides a technical scheme that its technical problem adopted is: a demoulding push-out device comprises a drag hook mechanism and a mould; the draw hook mechanism is arranged on one side of the die and comprises a draw hook, a spring and a draw hook supporting frame; one end of the drag hook is connected with the drag hook supporting frame, and the other end of the drag hook is connected with the spring.

The drag hook includes bottom stiff end and top rotation end, and its top stiff end is connected with the one end of drag hook support frame, and the one end of its top rotation end is connected with the other end of drag hook support frame through spring and connecting rod.

Furthermore, the drag hook support frame is L-shaped.

Furthermore, the rotating end at the top of the draw hook is in a semi-trapezoidal shape.

Further, be equipped with the push pedal on the mould, the push pedal includes first order push pedal A, first order push pedal B, second level push pedal A, the second level push pedal B that from supreme order arrangement set up down.

The first-stage push plate A, the first-stage push plate B and the second-stage push plate A are lower than the rotating end of the draw hook.

The bottom of the rotating end of the draw hook and the second-stage push plate B are on the same horizontal plane.

Furthermore, the horizontal length of the second-stage push plate B is shorter than that of the first-stage push plate A, the first-stage push plate B and the second-stage push plate A.

Further, a supporting plate A, a supporting plate B, a first-stage push rod, a second-stage push rod and a piece pushing plate are further arranged on the die; the pushing plate, the supporting plate A and the supporting plate B are arranged in sequence from top to bottom to form a supporting plate; the supporting plate is arranged above the push plate; the first-stage push rod is connected with the support plate A, the support plate B, the second-stage push plate A and the first-stage push plate B in a penetrating mode.

And the second-stage push rod is in through connection with the pushing plate, the support plate A, the support plate B and the second-stage push plate B.

And a movable mold core is arranged outside the second-stage push rod.

The bottom of the die is connected with a forming machine ejector rod which is in through connection with a first-stage push plate B and a first-stage push plate A.

The plastic product to be demoulded is positioned on the top of the second-stage push rod.

Compared with the prior art, the utility model beneficial effect who has is:

the utility model provides a drawing of patterns ejecting device has changed traditional design theory, utilizes the structure of different prior art, when realizing that the product is released in the second grade drawing of patterns, has realized the miniaturization of mould, especially the reduction of mould thickness, has realized the make-up machine production of little tonnage, has reduced manufacturing cost, and drag hook mechanism design is in the outside of mould, assembles, dismantles, and the investigation of trouble is all more convenient high-efficient.

Drawings

The invention will be further described with reference to the following figures and examples:

fig. 1 is a structural diagram of the demoulding and pushing device of the utility model.

In the figure, 1, a first-stage push plate A, 2, a first-stage push plate B, 3, a second-stage push plate A, 4, a second-stage push plate B, 5, a first-stage push rod, 6, a support plate A, 7, a support plate B, 8, a plastic product, 9, a stripper plate, 10, a movable mold core, 11, a second-stage push rod, 12, a forming machine ejector rod, 13, a draw hook, 14, a spring and 15 are used for drawing hook support frames.

Detailed Description

The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following embodiments.

Example 1

A demoulding push-out device is shown in figure 1 and comprises a drag hook mechanism and a mould; the draw hook mechanism is arranged on one side of the die and comprises a draw hook 13, a spring 14 and a draw hook support frame 15; one end of the drag hook 13 is connected with the drag hook support frame 15, and the other end is connected with the spring 14.

The draw hook 13 comprises a bottom fixed end and a top rotating end, the top fixed end is connected with one end of the draw hook support frame 15, and one end of the top rotating end is connected with the other end of the draw hook support frame 15 through a spring 14 and a connecting rod.

The drag hook support frame 15 is L-shaped.

The top rotating end of the drag hook 13 is in a semi-trapezoidal shape.

Be equipped with the push pedal on the mould, the push pedal includes first order push pedal A1, first order push pedal B2, second level push pedal A3, second level push pedal B4 that from supreme order arrangement set up down.

The heights of the first-stage push plate A1, the first-stage push plate B2 and the second-stage push plate A3 are lower than that of the rotating end of the drag hook 13.

The bottom of the rotating end of the draw hook 13 and the second-stage push plate B4 are on the same horizontal plane.

The horizontal length of the second-stage push plate B4 is shorter than that of the first-stage push plate A1, the first-stage push plate B2 and the second-stage push plate A3.

The mould is also provided with a supporting plate A6, a supporting plate B7, a first-stage push rod 5, a second-stage push rod 11 and a piece pushing plate 9; the pushing plate 9, the supporting plate A6 and the supporting plate B7 are arranged in sequence from top to bottom to form a supporting plate; the supporting plate is arranged above the push plate; the first-stage push rod 5 is connected with the supporting plate A6, the supporting plate B7, the second-stage push plate B4, the second-stage push plate A3 and the first-stage push plate B2 in a penetrating mode.

And the second-stage push rod 11 is connected with the push plate 9, the support plate A6, the support plate B7 and the second-stage push plate B4 in a penetrating manner.

And a movable mold core 10 is arranged outside the second-stage push rod 11.

The bottom of the die is connected with a forming machine ejector rod 12, and the forming machine ejector rod 12 is connected with a first-stage push plate B2 and a first-stage push plate A1 in a penetrating mode.

The plastic article 8 to be demolded is positioned on top of the second stage ram 11.

The utility model provides a pair of drawing of patterns ejecting device work process as follows:

the drag hook mechanism is arranged at one side of the die, so that the whole thickness of the die can be reduced, and the total thickness of the die is increased by the driven secondary demoulding mechanism. At the initial stage of pushing out the plastic product 8, due to the action of the draw hook 13, the forming machine ejector rod 12 enables the first-stage push plate A1, the first-stage push plate B2 and the second-stage push plate A3 and the second-stage push plate B4 to be pushed out simultaneously, the first-stage push rod 5 and the second-stage push rod 11 can be pushed simultaneously to separate the plastic product 8 from the movable mold core 10, the first-stage pushing out is completed, the upper portion of the draw hook 13 slowly contacts with the inclined surface of the support plate A6, the first-stage push rod 5 rotates anticlockwise around the rotating shaft at the bottom of the draw hook 13 after being stressed, the second-stage push plate A3 is separated, the first-stage push rod 5 stops pushing out, the second-stage push rod 11 continues to push the plastic product, the plastic product 8 is separated from the.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (7)

1. A demoulding push-out device is characterized by comprising a drag hook mechanism and a mould; the draw hook mechanism is arranged on one side of the die and comprises a draw hook (13), a spring (14) and a draw hook support frame (15); one end of the drag hook (13) is connected with the drag hook supporting frame (15), and the other end of the drag hook (13) is connected with the spring (14); the draw hook (13) comprises a bottom fixed end and a top rotating end, the top fixed end is connected with one end of the draw hook supporting frame (15), and one end of the top rotating end is connected with the other end of the draw hook supporting frame (15) through a spring (14) and a connecting rod;

the die is provided with a push plate, and the push plate comprises a first-stage push plate A (1), a first-stage push plate B (2), a second-stage push plate A (3) and a second-stage push plate B (4) which are sequentially arranged from bottom to top;

the mould is also provided with a supporting plate A (6), a supporting plate B (7), a first-stage push rod (5), a second-stage push rod (11) and a workpiece pushing plate (9); the pushing plate (9), the supporting plate A (6) and the supporting plate B (7) are arranged in sequence from top to bottom to form a supporting plate; the supporting plate is arranged above the push plate; the first-stage push rod (5) is connected with the support plate A (6), the support plate B (7), the second-stage push plate B (4), the second-stage push plate A (3) and the first-stage push plate B (2) in a penetrating mode.

2. The ejector apparatus according to claim 1, wherein the first stage ejector plate A (1), the first stage ejector plate B (2) and the second stage ejector plate A (3) are lower than the rotating end of the draw hook (13);

the bottom of the rotating end of the draw hook (13) and the second-stage push plate B (4) are on the same horizontal plane;

and the horizontal length of the second-stage push plate B (4) is shorter than that of the first-stage push plate A (1), the first-stage push plate B (2) and the second-stage push plate A (3).

3. A stripper push-out device according to claim 2, wherein the second-stage push rod (11) is connected through the push plate (9), the support plate a (6), the support plate B (7) and the second-stage push plate B (4).

4. A ejector device according to claim 3, wherein said second stage ram (11) is externally provided with a moving core (10).

5. The demolding ejection device as claimed in claim 4, wherein a molding machine ejector rod (12) is connected to the bottom of the mold, and the molding machine ejector rod (12) is connected to the first-stage ejector plate B (2) and the first-stage ejector plate A (1) in a penetrating manner.

6. A stripper push-out device according to claim 5, characterised in that the hook support (15) is L-shaped.

7. The ejector device according to claim 6, wherein the top rotating end of said hook (13) is a half trapezoid.

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