CN214926700U - Rotary demoulding structure for inverted curved surface product - Google Patents

Abstract

The utility model discloses a rotatory demoulding structure of back-off curved surface product belongs to the mould field, including front mould subassembly and back mould subassembly. The ejector pin panel drives the ejector pin and the blade insert to be ejected forwards, so that a product is separated from a rear mold core, the middle boss of the product is clamped by one end of an electric tool, the product is slowly rotated, the product is completely separated from the blade insert, the product is smoothly taken out, and the whole demolding action is realized.

Description

Rotary demoulding structure for inverted curved surface product

Technical Field

The utility model relates to a demoulding structure specifically is a rotatory demoulding structure of back-off curved surface product.

Background

The mould is a tool for manufacturing a molded article, and for a product with a curved surface shape and a plastic product with a plurality of curved surface array structures, when the curved surface structure of the product interferes with the demoulding direction, the product is difficult to demould directly from the mould. The method which is mostly adopted for the conventional back-off structure is to use a mode of a pitched roof and an inner sliding block for demoulding.

However, the runner between the blades has a structure of a mold back-off phenomenon, so that the product is troublesome to produce in one-step molding, and the original method cannot be used.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rotatory demoulding structure of back-off curved surface product to solve the problem of proposing among the above-mentioned background art.

For solving the deficiencies of the prior art, the utility model provides a following technical scheme:

a rotary demoulding structure of a reversed curved surface product comprises a front mould component and a rear mould component, wherein the front mould component comprises a front mould heat insulation plate and a front mould bottom plate which are fixedly connected, a front mould A plate is installed on the front mould bottom plate, a positioning ring is arranged on the end surface of the front mould heat insulation plate, a plurality of guide pillars are uniformly and fixedly installed on the front mould bottom plate, the guide pillars penetrate through the front mould A plate installed on the front mould bottom plate, the rear mould component comprises a rear mould heat insulation plate and a rear mould bottom plate which are fixedly connected, two square irons are symmetrically and fixedly installed on the end surface of the rear mould bottom plate, a support pillar and a middle support part are fixedly installed between the two square irons, a thimble bottom plate and a thimble panel are installed on the support pillar and the middle support part, a rear mould B plate is fixedly installed on the two square irons, a rear mould core is fixedly installed in the rear mould B plate, and the front mould component and the rear mould component are buckled to form a mould cavity, forming a product in the mold cavity.

As an improved scheme of the utility model: a plurality of thimbles are uniformly distributed on the thimble panel and are in contact with the surface of a product.

As another improvement of the present invention: evenly distributed fixed mounting has a plurality of nylon to draw the stick on the back mould B board, slidable mounting has the slider on the front mould A board, slidable mounting has the shovel base in the front mould bottom plate, fixed mounting has the slip screw that runs through front mould A board on the front mould bottom plate.

As another improvement of the present invention: and a blade insert arranged on the ejector pin panel is arranged below a product in the mold cavity, and an electric tool is detachably arranged on the end surface of the product.

As a further aspect of the present invention: the product has a plurality of curved surface structures evenly distributed along the circumference.

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

the ejector pin panel drives the ejector pin and the blade insert to be ejected forwards, so that a product is separated from a rear mold core, the middle boss of the product is clamped by one end of an electric tool, the product is slowly rotated, the product is completely separated from the blade insert, the product is smoothly taken out, and the whole demolding action is realized.

Drawings

FIG. 1 is a three-dimensional exploded view of a rotary demoulding structure of a reversed curved surface product;

FIG. 2 is a three-dimensional view of a front mold assembly of a rotary demolding structure for a reversed curved surface product;

FIG. 3 is a three-dimensional view of a mold assembly after a rotary demolding structure of a reversed curved surface product;

FIG. 4 is a three-dimensional view of a product with a rotary demolding structure for a reversed curved surface product;

in the figure: 1-rear mould heat insulation board, 2-rear mould bottom board, 3-square iron, 4-rear mould B board, 5-rear mould core, 6-product, 7-guide pillar, 8-front mould A board, 9-front mould bottom board, 10-front mould heat insulation board, 11-positioning ring, 12-support pillar, 13-middle support, 14-thimble bottom board, 15-thimble panel, 16-thimble, 17-nylon pull rod, 18-slide block, 19-shovel base, 20-sliding screw, 21-blade insert and 22-electric tool.

Detailed Description

The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the drawings or description, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practical applications. The embodiments of the present invention are provided only for illustration, and not for limiting the scope of the present invention. Any obvious and obvious modifications or alterations to the present invention can be made without departing from the spirit and scope of the present invention.

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 1-4, the embodiment provides a rotary demolding structure for a reversed curved surface product, which includes a front mold assembly and a rear mold assembly, wherein the front mold assembly includes a front mold heat-insulating plate 10 and a front mold bottom plate 9, the front mold bottom plate 9 is mounted with a front mold a plate 8, an end surface of the front mold heat-insulating plate 10 is provided with a positioning ring 11, the front mold bottom plate 9 is uniformly and fixedly mounted with a plurality of guide posts 7, the plurality of guide posts 7 penetrate through the front mold a plate 8 mounted on the front mold bottom plate 9, the rear mold assembly includes a rear mold heat-insulating plate 1 and a rear mold bottom plate 2, the end surface of the rear mold bottom plate 2 is symmetrically and fixedly mounted with two square irons 3, a support post 12 is fixedly mounted between the two square irons 3, a thimble bottom plate 14 is slidably mounted on the support post 12, the thimble bottom plate 14 is connected with a thimble panel 15 through a middle support 13, and a rear die B plate 4 is fixedly arranged on the two square irons 3, a rear die core 5 is fixedly arranged in the rear die B plate 4, the front die assembly and the rear die assembly are buckled to form a die cavity, and a product 6 is formed in the die cavity. A plurality of thimbles 16 are uniformly distributed on the thimble panel 15, and the thimbles 16 are in surface contact with the products 6.

The positioning ring 11 is arranged on the front mould heat insulation plate 10, is corresponding to the injection hole of the injection molding machine and has the function of correcting and positioning. The front mold heat insulation plate 10 is fixed with the front mold bottom plate 9 through screws. Water channels are designed in the front mold A plate 8 and the rear mold B plate 4, and water channel interfaces of all mold bases can be connected with cooling water, so that the necessity of cooling the molds in the injection molding process is realized.

The guide post 7 is arranged on the front mould bottom plate 9 and passes through the guide sleeve on the front mould A plate 8. In the process of opening and closing the die, the four guide posts 7 slide in the guide sleeve holes of the rear die B plate 4 to play a role in guiding.

The square iron 3 is fixed on the rear mould bottom plate 2 through screws, and the rear mould heat insulation plate 1 is installed on the rear mould bottom plate 2. The reset rod of the thimble 16 is provided with a reset spring and is arranged on the thimble panel 15. The thimble panel 15 and the thimble base plate 14 are connected by the middle support 13, and mainly function is to play a guiding role in the movement process of the thimble panel 15. The four supporting columns 12 pass through the thimble base plate 14 and are fixed on the screw hole positions of the back mould base plate 2. In the mold opening stage after the injection molding is finished, the ejector rod of the injection molding machine is ejected to push the ejector pin bottom plate 14 to start compressing the spring, so that the ejector pin 16 is driven to move forwards and eject the product 6. After the whole demolding process is finished, the reset spring forces the reset rod to reset, and the ejector pin 16 resets.

Please refer to fig. 1 and fig. 2, which are an optimized embodiment of the present invention: evenly distributed fixed mounting has a plurality of nylon pull rods 17 on the back mould B board 4, slidable mounting has slider 18 on the front mould A board 8, slidable mounting has shovel base 19 in the front mould bottom plate 9, fixed mounting has the slip screw 20 that runs through front mould A board 8 on the front mould bottom plate 9.

A boss of a base of the product 6 is provided with a left side hole and a right side hole, two sliding blocks 18 are designed, each sliding block 18 is respectively matched with a shovel base 19, the sliding block 18 is installed on a front die A plate 8, and the shovel base 19 is installed on a front die bottom plate 9. The front mold a plate 8 and the front mold base plate 9 are not completely fixed but connected by slide screws 20. The sliding screw 20 is relatively long, leaving a space of 33 mm.

At the moment of opening the die, because the nylon pull rod 17 is arranged on the rear die B plate 4, the front die A plate 8 and the rear die B plate 4 cannot be separated immediately, but the front die A plate 8 and the front die bottom plate 9 are separated firstly, when the pulling distance reaches 33mm, the stroke limit position is reached, and the shovel base 19 arranged on the front die bottom plate 9 in the process can drive the sliding block 18 to slide outwards. The slide block 18 can be separated from the side hole of the product to complete the demoulding action.

Please refer to fig. 1 and fig. 3-4, which are another preferred embodiment of the present invention: a blade insert 21 installed on the ejector pin panel 15 is arranged below the product 6 in the mold cavity, and an electric tool 22 is detachably installed on the end face of the product 6. The product 6 has a plurality of curved surface structures uniformly distributed along the circumference.

A plurality of thimbles 16 are uniformly distributed and installed on the thimble panel 15, the blade insert 21 is connected with the thimble panel 15 through ejector rods, and after the injection molding machine injects the molten raw material into a mold cavity, the molten raw material is cooled and pressure-maintained, and then the ejector rods of the injection molding machine eject out to push the thimble panel 15 to move rightwards. At this time, all the ejector pins 16 and the blade inserts 21 are respectively ejected forward, so that the product 6 is separated from the rear mold core 5. And finally, one end of an electric tool 22 is used for clamping a boss in the middle of the product 6, and after the electric tool slowly rotates, the product 6 can be completely separated from the blade insert 21, so that the product can be taken out smoothly, and the whole demoulding action is realized.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented 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.

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 (5)

1. A rotary demoulding structure of a reversed curved surface product comprises a front mould component and a rear mould component, and is characterized in that the front mould component comprises a front mould heat-insulating plate (10) and a front mould bottom plate (9) which are fixedly connected, a front mould A plate (8) is installed on the front mould bottom plate (9), a positioning ring (11) is arranged on the end surface of the front mould heat-insulating plate (10), a plurality of guide pillars (7) are uniformly and fixedly installed on the front mould bottom plate (9), the guide pillars (7) penetrate through the front mould A plate (8) installed on the front mould bottom plate (9), the rear mould component comprises a rear mould (1) and a rear mould bottom plate (2) which are fixedly connected, two square irons (3) are symmetrically and fixedly installed on the end surface of the rear mould bottom plate (2), a support column (12) is fixedly installed between the two square irons (3), and a thimble bottom plate (14) is slidably installed on the support column (12), the ejector pin bottom plate (14) is connected with an ejector pin panel (15) through a middle support (13), a rear die B plate (4) is fixedly mounted on the square iron (3), a rear die core (5) is fixedly mounted in the rear die B plate (4), the front die assembly and the rear die assembly are buckled to form a die cavity, and a product (6) is formed in the die cavity.

2. The rotary demolding structure for the inverted curved surface product as claimed in claim 1, wherein a plurality of ejector pins (16) are uniformly distributed on the ejector pin panel (15), and the ejector pins (16) are in contact with the surface of the product (6).

3. The rotary demolding structure for the inverted curved surface product as claimed in claim 2, wherein a plurality of nylon pull rods (17) are uniformly and fixedly mounted on the rear mold B plate (4), a sliding block (18) is slidably mounted on the front mold A plate (8), a shovel base (19) is slidably mounted in the front mold bottom plate (9), and a sliding screw (20) penetrating through the front mold A plate (8) is fixedly mounted on the front mold bottom plate (9).

4. The rotary demolding structure for the inverted curved surface product as claimed in claim 1, wherein a blade insert (21) mounted on the thimble panel (15) is arranged below the product (6) in the mold cavity, and an electric tool (22) is detachably mounted on the end face of the product (6).

5. The rotary demoulding structure for the inverted curved surface products as claimed in any one of claims 1 to 4, wherein the product (6) is provided with a plurality of curved surface structures which are evenly distributed along the circumference.

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