Secondary ejection mechanism and forming machine

Abstract

The utility model provides a secondary ejection mechanism and a forming machine, and relates to the technical field of injection molding, the secondary ejection mechanism comprises an ejector pin, an ejector block, a push rod base, a movable side plate and an ejector pin plate, the push rod base is connected with the ejector block, the ejector pin plate is connected with the ejector pin, and when the ejector pin plate is used for pushing the ejector pin to eject, the push rod base is used for pushing the ejector block to eject together. When the push rod base makes contact with the movable side plate and then stops moving, the first ejection action is completed at the moment, the ejector plate is used for pushing the ejector pin to continue ejection, the second ejection action is carried out, and the product is smoothly ejected out. Through the arrangement of the ejector pin, the ejector block, the push rod base, the base elastic body, the movable side plate and the ejector pin plate, secondary ejection of a product can be achieved, two sets of ejector pin plates and ejector pin push plates do not need to be arranged, the mold thickness and cost are reduced, a large forming machine does not need to be matched, and the product manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding technical field especially a secondary ejection mechanism and molding machine. BACKGROUND

[0002] Because the bottom surface of the plastic product bone position is the assembly reference, the ejector pin is prohibited, in order to ensure that the product can be demolded smoothly, it is necessary to design the ejector block ejection structure, the traditional secondary ejection structure needs to set two sets of ejector pin plate, ejector pin push plate, leading to the increase of mold thickness, the mold cost will increase, due to the large mold thickness, the molding machine tonnage required for production will increase, and the product manufacturing cost will also increase, aiming at the above-mentioned defects, the present application is provided. UTILITARY MODEL CONTENTS

[0003] The utility model discloses a secondary ejection mechanism and molding machine, provide a kind of secondary ejection structure of simple structure, make mold thickness thin, reduce mold expense, solve the problem of cost increase caused by traditional secondary ejection structure.

[0004] To solve the above problems, the utility model provides a secondary ejection mechanism, including ejector pin, ejector block, push rod base, movable side plate and ejector pin plate, the push rod base is connected with the ejector block, the ejector pin plate is connected with the ejector pin, when the ejector pin plate pushes the ejector pin and ejects, the push rod base pushes the ejector block and ejects together, when the push rod base contacts with movable side plate and stops moving, at this time, the first ejection action is completed, the ejector pin plate pushes the ejector pin and continues to eject, and the second ejection action is carried out, so that the product is smoothly ejected.

[0005] According to an embodiment of the utility model, the secondary ejection mechanism further includes an ejector pin push plate, the ejector pin push plate is used for pushing the ejector pin plate, and the ejector pin push plate is connected with the structure in the molding machine.

[0006] According to an embodiment of the utility model, the push rod base is connected with the base elastic body, when the ejector pin plate pushes the ejector pin and ejects, the push rod base is acted on by the base elastic body, and the ejector block is pushed and ejected together.

[0007] According to an embodiment of the utility model, the push rod base is connected with the ejector block through the ejector block push rod.

[0008] According to an embodiment of the utility model, the ejector block is detachably installed on the ejector block push rod, and the ejector block can be replaced according to the product type.

[0009] According to an embodiment of the utility model, the ejector block push rod is connected with the ejector block and the push rod base through bolts, which is convenient for installation, maintenance and replacement.

[0010] According to an embodiment of the utility model, the base elastic body is a spring, and other structures or materials with elastic properties can also be used.

[0011] According to an embodiment of the utility model, spring hole for accommodating base elastomer is arranged in the push rod base, which plays a guiding and limiting role.

[0012] According to an embodiment of the utility model, the spring is installed on the spring pin, which is used to maintain the movement stability and position stability of the spring.

[0013] A molding machine, the molding machine includes the secondary ejection mechanism.

[0014] The utility model discloses the beneficial effect is, through the setting of the ejector pin, the top block, the push rod base, the base elastomer, movable side type board, the ejector pin plate, can realize the secondary ejection of product, need not set up two sets of ejector pin plate, ejector pin push plate, reduce the mould thickness and cost, and then need not match large -scale molding machine, reduce product manufacturing cost, this structure is reliable, convenient maintenance simultaneously, compare. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model is further illustrated below in combination with the drawings and examples.

[0016] Figure 1 It is the whole structure schematic diagram of secondary ejection mechanism;

[0017] Figure 2 It is the schematic diagram of secondary ejection mechanism when executing the first step of ejection;

[0018] Figure 3 It is the schematic diagram of secondary ejection mechanism when executing the second step of ejection. DETAILED DESCRIPTION

[0019] The following description is only used to disclose the utility model to enable the person skilled in the art to implement the utility model. The examples in the following description are only as examples, and other obvious modifications can be thought of by the person skilled in the art. The basic principles of the utility model defined in the following description can be applied to other implementation schemes, modification schemes, improvement schemes, equivalent schemes and other schemes without departing from the spirit and scope of the utility model.

[0020] A secondary ejection mechanism, as Figure 1 , including ejector pin 2, top block 3, top block push rod 4, push rod base 5, base elastomer 6, spring pin 7, movable side type board 8, ejector pin plate 9, ejector pin push plate 10, square iron 11 and movable side mounting plate 12.

[0021] Push rod base 5 is connected with top block push rod 4 and top block 3, top block push rod 4 is connected with top block 3 and push rod base 5 by bolt, is convenient for installation, maintenance, replacement, can replace top block 3 according to product type.

[0022] The ejector plate 9 is used to push the ejector plate 10, and the ejector plate 10 is connected with the driving structure in the molding machine. The square iron 11 is arranged at the side of the ejector plate 9 and the ejector plate 10. The movable side plate 12, the ejector plate 10 and the ejector plate 9 are arranged in sequence. The ejector plate 9 is connected with the ejector pin 2. When the ejector plate 9 pushes the ejector pin 2 to eject, the ejector block 3 is pushed to eject together by the push rod base 5. When the push rod base 5 contacts with the movable side plate 8, the movement is stopped. At this time, the first ejection action is completed. The ejector pin 2 is continuously pushed to eject by the ejector plate 9, and the second ejection action is performed. The product 1 is smoothly ejected.

[0023] The base elastic body 6 is the driving structure of the push rod base 5. In other embodiments, other structures capable of stretching and contracting can also be used to drive the push rod base 5 to move. The push rod base 5 is connected with the base elastic body 6. When the ejector plate 9 pushes the ejector pin 2 to eject, the push rod base 5 is pushed to eject together by the base elastic body 6. The base elastic body 6 is a spring. The push rod base 5 is provided with a spring hole for accommodating the base elastic body 6, which plays a guiding and limiting role. The spring is installed on the spring pin 7, which is used to maintain the stability of the movement and the position of the spring.

[0024] A molding machine is provided with the above-mentioned second ejection mechanism.

[0025] Ejection steps: step one: as Figure 2 After the mold is opened, the molding machine starts to eject. The ejector plate 9 and the ejector plate 10 push the ejector pin 2 to eject. At this time, the push rod base 5 is pushed to eject together by the base elastic body 6. When the ejector block 3 and the product 1 are pushed forward by 22.5mm, the front end of the push rod base 5 will contact the movable side plate 8. At this time, the movement of the ejector block 3 will be stopped.

[0026] Step two: as Figure 3 The ejector plate 9 and the ejector plate 10 push the ejector pin 2 to continue to eject. At this time, only part of the product 1 is in the ejector block 3. The ejector pin 2 can smoothly eject the product 1. When the molding machine is ejected to 45mm, the ejector plate 10 will contact the movable side plate 8. The product 1 is ejected. After the product 1 is taken out by the manipulator or other unloading mechanism, the ejection mechanism retreats together. The mold is closed, and the molding machine enters the next molding cycle. The distance parameters in the above steps are adaptively set according to the actual situation of the product and the equipment.

[0027] The new second ejection structure saves the mold cost by 8%-12%, reduces the maintenance frequency by 30%, reduces the maintenance cost, improves the effective utilization rate of the mold, meets the needs of customers for diversified products, and reduces the product manufacturing cost.

[0028] It will be understood by those skilled in the art that the above description and the embodiments of the present application shown in the drawings are only examples and do not limit the present application. The purpose of the present application has been completely and effectively achieved. The function and structural principle of the present application have been demonstrated and explained in the embodiments, and the embodiments of the present application can have any deformation and modification without departing from the principle.

Claims

1. A secondary ejection mechanism characterized by: The secondary ejection mechanism comprises a ejector pin (2), an ejector block (3), a push rod base (5), a movable side mold plate (8) and an ejector pin plate (9), the push rod base (5) is connected with the ejector block (3), the ejector pin plate (9) is connected with the ejector pin (2), when the ejector pin plate (9) pushes the ejector pin (2) to eject, the push rod base (5) pushes the ejector block (3) to eject together, when the push rod base (5) contacts with the movable side mold plate (8) and stops moving, the ejector pin plate (9) pushes the ejector pin (2) to continue ejecting, and the product is smoothly ejected.

2. The secondary ejection mechanism of claim 1, wherein: The secondary ejection mechanism further comprises an ejector pin push plate (10) for pushing the ejector pin plate (9).

3. A secondary ejection mechanism according to claim 1 or 2, characterized in that: The push rod base (5) is connected with a base elastic body (6), when the ejector pin plate (9) pushes the ejector pin (2) to eject, the push rod base (5) is affected by the base elastic body (6) and pushes the ejector block (3) to eject together.

4. The secondary ejection mechanism of claim 3, wherein: The push rod base (5) is connected with the ejector block (3) through an ejector block push rod (4).

5. The secondary ejection mechanism of claim 4, wherein: The ejector block (3) is detachably installed on the ejector block push rod (4).

6. The secondary ejection mechanism of claim 5, wherein: The ejector block push rod (4) is connected with the ejector block (3) and the push rod base (5) through bolts.

7. The secondary ejection mechanism according to any one of claims 4-6, characterized in that: The base elastic body (6) is a spring.

8. The secondary ejection mechanism of claim 7, wherein: The push rod base (5) is provided with a spring hole for accommodating the base elastic body (6).

9. The secondary ejection mechanism of claim 8, wherein: The spring is installed on a spring pin (7).

10. A forming machine characterized by: The molding machine comprises the secondary ejection mechanism according to any one of claims 1-9.

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