CN216832010U - Injection mold convenient to drawing of patterns - Google Patents

Abstract

The utility model discloses an injection mold convenient to drawing of patterns uses in injection mold technical field, and its technical scheme main points are: the device comprises an upper die and a lower die, wherein a plurality of ejection columns penetrate through the lower die in the thickness direction of the lower die, a forming template is hinged to the top surface of the lower die, a plurality of ejection pieces with top surfaces flush with the top surface of the forming template are arranged on the forming template, and an air cylinder for controlling the deflection of the forming template is arranged on the lower die, wherein the ejection columns are used for applying acting force to the ejection pieces to enable the ejection pieces to extend out of the forming template; has the technical effects that: when the workpiece is demoulded, the workpiece is separated from the forming template through the ejection piece, and then the forming template deflects through the air cylinder, so that the forming template can slide along the top surface of the forming template, and the workpiece is convenient to demould.

Description

An injection mold for easy demolding

technical field

The utility model relates to the technical field of injection moulds, more particularly to an injection mould which is convenient for demolding.

Background technique

Injection mold is a tool for producing plastic products, and it is also a tool for giving plastic products complete structure and precise size.

At present, the Chinese Patent Publication No. CN215434769U discloses an injection molding mold, including a fixed template and a movable template. The fixed template is embedded with a fixed mold core, and the movable template is embedded with a movable mold core. The fixed mold core and the movable mold core are embedded. The mold core forms a molding cavity when the mold is closed. The side of the fixed platen away from the movable platen is provided with a plurality of branch injection flow channels which are all connected with the injection port. Each branch injection flow channel extends outward from the center of the fixed platen. Each branch injection flow channel is provided with branch injection holes at the position away from the center of the fixed platen, and each branch injection hole is communicated with the molding cavity. The injection mold can make the injected injection material flow more uniformly to the edge of the molding cavity. , so that the edge portion of the disc body is easier to form, so that the edge portion of the disc body is less prone to defects.

When the existing injection molds process plastic products, in order to ensure the uniformity of the injected slurry, the injection mold is usually placed horizontally. However, this demolding process is extremely inefficient.

Therefore, a new solution is needed to solve this problem.

Utility model content

The purpose of this utility model is to provide an injection mold that is easy to demould. increased efficiency.

The above-mentioned technical purpose of the present utility model is achieved through the following technical solutions: including an upper die and a lower die, the lower die is penetrated with several top posts in its thickness direction, and the top surface of the lower die is hinged with forming A template, the forming template is provided with a number of ejectors whose top surfaces are flush with the top surface of the forming template, and the top post is used to exert a force on the ejector to make it protrude from the forming template, and the lower mold There is a cylinder for controlling the deflection of the forming template.

Through the above technical solution, after the plastic product is solidified and formed, the finished product is separated from the forming template by pushing the ejector by the top column, and then the cylinder pushes the forming template to deflect, and the formed finished product slides down along the top surface of the forming template, which is convenient for correcting The demoulding of the workpiece effectively improves the demoulding efficiency.

The utility model is further configured as follows: the forming template is provided with a plurality of accommodating grooves along its thickness direction from the top surface, the ejector is placed in the accommodating groove, and the accommodating groove is opened from the bottom surface downward with a plurality of accommodating grooves for the forming template to pass through. Through hole one, the through hole one is used for the passage of the top column.

The utility model is further configured as follows: the forming template is provided with a plurality of clamping grooves from the bottom surface along the thickness direction thereof, each of the clamping grooves is communicated with a through hole, and a clamping groove is arranged in the clamping groove. An elastic piece is fixedly connected to the bottom surface of the ejecting piece, and the other end of the elastic piece is fixedly connected to the clamping piece.

Through the above technical solution, since the injection slurry is fluid, and the pressure between the lower mold and the molding template is extremely large during the process of molding the slurry, in order to ensure the molding effect of the finished product, the side walls of the ejector and the accommodating groove are There is basically no gap between them, so the frictional force between the ejector and the side peripheral wall of the accommodating groove is also large. After the ejector is pushed out of the accommodating groove by the top column, its own gravity may not be able to ensure that the ejector is retracted and accommodated. In the groove, by arranging an elastic piece, it is ensured that the ejector piece can be retracted into the accommodating groove.

The utility model is further provided that: the four corners of the upper mold are all provided with positioning through holes which penetrate the lower mold from the top surface downward.

Through the above technical solution, when the upper mold and the lower mold are installed on the mechanical equipment for fixing, the positioning columns on the mechanical equipment are passed through the positioning through holes on the upper mold and the lower mold, so that the upper mold and the lower mold can be ensured. precise connection between.

The utility model is further provided that: the length of the forming template in the direction of its rotation axis is smaller than the distance between the two positioning through holes in the direction of its rotation axis, and the two ends of the forming template in the direction of its rotation axis Each fixed connection is provided with a connecting block, and the cylinder deflects the forming template by controlling the connecting block.

Through the above technical solution, since the positioning column on the mechanical equipment passes through the upper mold and the lower mold, in order to ensure the rotation of the forming template, the length of the forming template should be smaller than the distance between the two positioning through holes in the direction of its rotation axis , By setting the connecting block, it is convenient for the cylinder to control the forming template.

The utility model is further configured as follows: the bottom surface of the upper mold is fixedly connected with a plurality of upper positioning blocks, and the top surface of the forming template is provided with a plurality of positioning grooves matching the upper positioning blocks along the thickness direction.

Through the above technical solution, through the cooperation of the upper positioning block and the positioning groove 1, the upper mold and the molding template can be accurately connected, and the molding effect of the plastic product is ensured.

The utility model is further configured as follows: the bottom surface of the forming template is fixedly connected with a plurality of lower positioning blocks, and the top surface of the lower mold is provided with a plurality of positioning grooves 2 matched with the lower positioning blocks downward along its thickness.

Through the above technical solution, since the forming template will be frequently deflected, the cooperation between the lower positioning block and the second positioning groove further ensures that the upper mold and the forming template can be accurately connected.

The utility model is further set as follows: the deflection angle of the forming template is greater than 60°.

Through the above technical solution, the closer the molding template is to the vertical state, the easier it is for the injection-molded plastic product to slide off the molding template, and an inclination angle of more than 60° is sufficient for most molded plastic products to slide off the molding template.

To sum up, the utility model has the following beneficial effects:

When the plastic product is injection-molded, the plastic product is separated from the forming template by the action of the top column on the ejector, and then the forming template is deflected by the action of the air cylinder, so that the molded plastic product can slide down the top surface of the forming template. , which facilitates the demoulding work of the finished product.

Description of drawings

Fig. 1 is the exploded view one of the present embodiment;

Fig. 2 is the exploded view two of the present embodiment;

Fig. 3 is the sectional view of the molding template in the present embodiment;

FIG. 4 is an enlarged schematic view of part A of FIG. 3 .

Reference numerals: 1. Upper mold; 2. Lower mold; 3. Forming template; 4. Air cylinder; 5. Top column; 6. Positioning through hole; 7. Connecting block; 10. Clip; 11. Upper positioning block; 12. Positioning slot one; 13. Lower positioning block; 14. Positioning slot two.

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings.

Example:

An injection mold for easy demoulding, as shown in Figure 1, includes an upper mold 1 and a lower mold 2, wherein the lower mold 2 penetrates a number of top posts 5 in its thickness direction; One side edge is fixedly connected with a number of bumps, the top surface of the mold is provided with a forming template 3 that is hinged with several convex blocks, and a plurality of top surfaces are arranged on the forming template 3 that are flush with the top surface of the forming template 3. The ejector 8 and the ejector column 5 are used to exert a force on the ejector 8 to protrude out of the molding die plate 3 , wherein the lower mold 2 is provided with an air cylinder 4 for controlling the deflection of the molding die plate 3 .

Specifically, referring to FIGS. 3 and 4 , the forming template 3 is provided with several accommodating grooves from the top surface along its thickness direction, and the ejector 8 is placed in the accommodating groove and is attached to the inner peripheral wall of the accommodating groove. The part 8 is a solid cylinder, and a through hole for the top column 5 to pass through is opened from the bottom surface of the accommodating groove downwards in the accommodating groove; The clamping slot, an annular clamping member 10 is arranged in the clamping slot, each clamping slot is connected with a through hole, and there are two downwardly extending through the clamping slot at the bottom of the accommodating slot. Through hole 2, an elastic member 9 is arranged in each through hole 2. One end of the elastic member 9 is fixedly connected to the bottom surface of the ejecting member 8, and the other end of the elastic member 9 is fixedly connected to the clamping member 10. The piece 9 can be a spring or the like, wherein the top surface of the card borrowing piece is provided with a through hole 3 through which it passes through along its thickness direction, and the elastic piece 9 can be passed through the through hole 3 by a wire rope and the like, and is fixed on the clamping joint by means of winding or the like. Piece 10 on.

1, the four corners of the upper mold 1 are provided with positioning through holes 6 that penetrate the lower mold 2 from the top surface downward. In order to ensure that the forming template 3 can be deflected, the length of the forming template 3 in the direction of its rotation axis The distance between the two positioning through holes 6 in the direction of the rotation axis, wherein, the two ends of the forming template 3 in the direction of the rotation axis are fixedly connected with a connecting block 7, and the cylinder 4 controls the connecting block 7 to make the forming template. 3 is deflected, and the deflection angle of the forming template 3 is greater than 60°.

2 and 3, a plurality of upper positioning blocks 11 are fixedly connected to the bottom surface of the upper mold 1, and a plurality of positioning grooves 12 are provided on the top surface of the forming template 3 along its thickness direction to match the upper positioning blocks 11. , the bottom surface of the forming template 3 is fixedly connected with a number of lower positioning blocks 13, and the top surface of the lower mold 2 is provided with a number of positioning grooves 14 matched with the lower positioning block 13 downward along its thickness, wherein the positioning block two is For a regular square, the length of the second positioning slot 14 in the direction perpendicular to the rotation axis of the forming template 3 is greater than the length of the second positioning block to ensure that the second positioning block can be inserted into the second positioning slot 14 .

The working process and principle of this embodiment:

When people use the mold for injection molding, after the molding template 3 is connected with the lower mold 2, the upper mold 1 and the lower mold 2 are connected to the corresponding equipment through the positioning through holes 6. After the plastic product is molded , the upper mold 1 is separated from the forming template 3, and then the top column 5 is controlled to make it collide with the ejector 8 so that the ejector 8 separates the molded plastic product from the molding template 3, and then the top column 5 returns to the original position. Under the action of the elastic member 9, the ejecting member 8 is also retracted into the accommodating groove, and then the forming template 3 is deflected by the action of the air cylinder 4. After the forming template 3 is deflected to a certain angle, the formed plastic product will be under gravity. It slides down along the top surface of the molding template 3 under the action of the mold. This process does not require manual removal of the molded plastic product, which effectively improves the demoulding efficiency of the finished product.

This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications to the present embodiment without creative contribution as needed after reading this specification, but as long as the utility model is used in the present invention All new types of claims are protected by the patent law.

Claims (8)

1. The utility model provides an injection mold convenient to drawing of patterns, includes upper mold (1) and bed die (2), bed die (2) have penetrated a plurality of fore-set (5), its characterized in that in its thickness direction: the top surface of bed die (2) articulates there is forming template (3), be provided with ejecting (8) of a plurality of top surface and forming template (3) top surface parallel and level on forming template (3), fore-set (5) are used for applying the effort that makes it stretch out forming template (3) to ejecting (8), be provided with cylinder (4) that are used for controlling forming template (3) deflection on bed die (2).

2. The injection mold for facilitating demolding as claimed in claim 1, wherein: the forming template (3) is provided with a plurality of accommodating grooves along the thickness direction from the top surface, the ejection part (8) is placed in the accommodating grooves, the accommodating grooves are provided with a first through hole penetrating the forming template (3) downwards from the bottom surface, and the first through hole is used for the top column (5) to pass through.

3. An injection mold for facilitating demolding as claimed in claim 2, wherein: a plurality of clamping grooves are formed in the bottom surface of the forming template (3) in the thickness direction of the forming template, each clamping groove is communicated with a first through hole, a clamping piece (10) is arranged in each clamping groove, an elastic piece (9) is fixedly connected to the bottom surface of the ejection piece (8), and the other end of each elastic piece (9) is fixedly connected to the corresponding clamping piece (10).

4. An injection mould facilitating demoulding according to any of claims 1 to 3, wherein: and four corners of the upper die (1) are all provided with positioning through holes (6) which penetrate through the lower die (2) from the top surface downwards.

5. The injection mold for facilitating demolding as claimed in claim 1, wherein: the length of the forming template (3) in the direction of the rotation axis of the forming template is smaller than the distance between two positioning through holes (6) in the direction of the rotation axis of the forming template, connecting blocks (7) are respectively and fixedly connected to the two ends of the forming template (3) in the direction of the rotation axis of the forming template, and the forming template (3) deflects by the aid of the air cylinders (4) through the control of the connecting blocks (7).

6. An injection mold for facilitating demolding as claimed in claim 5, wherein: the bottom surface of the upper die (1) is fixedly connected with a plurality of upper positioning blocks (11), and the top surface of the forming template (3) is provided with a plurality of positioning grooves I (12) matched with the upper positioning blocks (11) along the thickness direction.

7. The injection mold of claim 6, wherein: the bottom surface of the forming template (3) is fixedly connected with a plurality of lower positioning blocks (13), and the top surface of the lower die (2) is downwards provided with a plurality of positioning grooves II (14) matched with the lower positioning blocks (13) along the thickness of the top surface.

8. An injection mold for facilitating demolding as claimed in claim 7, wherein: the deflection angle of the forming die plate (3) is larger than 60 degrees.

Images