CN112060500A - Powder cake box cover injection mold - Google Patents

Abstract

The invention relates to an injection mold for a powder cake box cover, which comprises a top plate, a backing plate, an upper template, a lower template, a mold foot and a bottom plate which are stacked in sequence from top to bottom; and also includes an oblique guide rod, a first slider seat, an insert needle , lower die insert, second slider seat, retractable slider and inclined top; the inclined rod part of the bottom end of the inclined guide rod penetrates the inclined groove on the first slider seat, and the insert pin is connected to the side slider through the side slider. The first slider seat is connected; the lower mold insert is inlaid on the lower mold core, and the insert pin corresponds to the position of the lower mold insert; the second slider seat is connected with the upper template through screws, and the first A trapezoidal slider is arranged on the side of the two slider seats facing the upper mold core, and the retracted slider is movably connected with the two oblique sides of the trapezoidal slider through a dovetail groove structure; the bottom end of the oblique top is connected to the oblique top seat. Hinged. The present invention redesigns the core-pulling structure, which can make room after the core-pulling, so that the powder cake box cover can be dropped without damage after the injection molding is completed, the scrapping rate is reduced, and the production cost is lowered.

Description

A kind of powder cake box cover injection mold

technical field

The invention relates to an injection mold, in particular to an injection mold for a powder cake box cover.

Background technique

Powder is mainly used to repair uneven parts of makeup and parts that fall off. Generally, the powder powder is beautifully packaged, with accessories such as a powder puff and a small mirror, which is convenient to carry around, and the powder is less flying when used.

The powder box used to hold the powder is mostly made of plastic and needs to be injection-molded by an injection mold.

The lid of the powder cake box is annular, and its structure is shown in Figure 7. The lower end face of the lid is provided with a slot, a through hole, an inner buckle, a buckle and a positioning pin, which are complex and have different directions. The subsequent mold opening and blanking operation brought great difficulties.

After completing the injection molding of the powder cake box, the existing injection mold often suffers from the above-mentioned structural deformation or being broken during core pulling or demolding and blanking, resulting in product scrapping and high production costs.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an injection mold for a powder cake box cover, redesign the core-pulling structure, and completely align the grooves, through holes, inner buckles, buckles and positioning pins on the lower end face of the box cover after core-pulling. The structure is realized, so that the powder box cover can be dropped without damage after the injection molding is completed, and the scrap rate can be reduced, thereby lowering the production cost.

In order to achieve the above object, the present invention provides the following technical solutions:

An injection mold for a powder cake box cover, comprising a top plate, a backing plate, an upper template, a lower template, a die foot and a bottom plate that are stacked in sequence from top to bottom; The template is provided with an upper mold core, and the lower template is provided with a lower mold core; it also includes an oblique guide rod, a first sliding block seat, an insert needle, a lower mold insert, a second sliding block seat, an inwardly retracting sliding block and Inclined top; the top end of the inclined guide rod is connected with the top plate by screws, the inclined rod part of the bottom end of the inclined guide rod penetrates the inclined groove on the first slider seat, and the insert pin is connected to the first slider seat through the side slider connection; the lower die insert is inlaid on the lower die core, the insert pin corresponds to the position of the lower die insert; the top end of the lower die insert is provided with a forming convex structure; the second slider seat It is connected with the upper template by screws, the side of the second sliding block seat facing the upper mold core is provided with a trapezoidal sliding block, and the retracting sliding block is movably connected with the two oblique sides of the trapezoidal sliding block through a dovetail groove structure; The inclined top penetrates the lower template and the lower mold core, and the bottom end of the inclined top is hinged with the inclined top seat on the thimble pad.

Further, the first slider seat is located in the chute on both sides in the width direction of the upper template, the first slider seat is located on both sides of the upper mold core in the width direction, and the side slider is located inside the upper mold core, The number of pins on a side slide is two.

Further, the insert needles are arranged horizontally, the insert needles are in the shape of elongated rods, the insert needles are specifically stepped shafts, and the ends of the insert needles are in contact with the side surfaces of the inserts of the lower die.

Further, the second slider seat is located in the chute at both ends of the upper template in the length direction, and the second slider seat is located on both sides of the upper mold core in the length direction; Actively connected with the trapezoidal slider.

Further, one end of the trapezoidal slider away from the second slider seat is provided with a snap forming groove, the retracted slider is symmetrically arranged relative to the trapezoidal slider, and a positioning pin is provided on the retracted slider. Formed holes.

Further, both the trapezoidal slider and the retracting slider are located in the guide grooves on the upper die core, the retracting slider includes an oblique guide portion and a side guide portion, and the positioning pin forming hole is specifically located in the oblique guide portion. away from the end of the second slider seat.

Further, the inclined top is in the shape of a 7, the top of the inclined top is provided with a forming groove, and the inclined top seat penetrates the thimble panel.

The beneficial effects of the invention are as follows: an injection mold for a powder cake box cover, redesigning the core-pulling structure, by writing the stem, the first slider seat, the side slider, the insert needle, the lower mold insert, the second slider seat, The combination of trapezoidal slider, retractable slider, sloping roof and sloping roof seat can completely align the grooves, through holes, inner buckles, buckles and positioning pins on the lower end face of the box cover after the linkage core pulling. Achieving a space to avoid the bad phenomenon of deformation or being pulled out, so that the powder cake box cover can be dropped without damage after the injection molding is completed, which can greatly reduce the scrap rate and reduce the production cost.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of an injection mold for a powder cake box cover according to the present invention.

FIG. 2 is a partial structural schematic diagram of an injection mold for a powder cake box cover according to the present invention.

FIG. 3 is a schematic structural diagram of the structure shown in FIG. 2 after removing the upper mold core.

FIG. 4 is a schematic diagram of the cooperation of a trapezoidal slider and an inwardly retracting slider of an injection mold for a powder cake box cover according to the present invention.

FIG. 5 is a schematic diagram of the cooperation between the insert pin and the insert of the lower die of a powder cake box cover injection mold according to the present invention.

6 is a schematic diagram of the cooperation between the lower core and the inclined top of an injection mold for a powder cake box cover according to the present invention.

FIG. 7 is a schematic structural diagram of a powder cake box cover injected by the present invention.

In the picture: 1. Top plate; 2. Backing plate; 3. Upper template; 4. Lower template; 5. Die foot; 6. Bottom plate; 7. Thimble panel; Lower die core; 11. Oblique guide rod; 12. First slider seat; 13. Side slider; 14. Insert needle; 15. Lower die insert; 16. Second slider seat; 17. Trapezoidal slider; 18. Retracting slider; 181, inclined guide part; 182, side guide part; 19, inclined top; 20, inclined top seat; 21, guide groove; 30, box cover; 31, card slot; 32, through hole; 33, inner buckle; 34, buckle; 35, positioning pin.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

1 to 7, an injection mold for a powder cake box cover includes a top plate 1, a backing plate 2, an upper template 3, a lower template 4, a mold foot 5 and a bottom plate 6 stacked in sequence from top to bottom; the mold foot 5. The inner side is provided with a thimble panel 7 and a thimble pad 8; the upper die plate 3 is provided with an upper die core 9, and the lower die plate 4 is provided with a lower die core 10; it also includes an oblique guide rod 11, a first slider seat 12, insert pin 14, lower die insert 15, second slider seat 16, retractable slider 18 and inclined top 19; the top of the inclined guide rod 11 is connected to the top plate 1 by screws, and the inclined guide rod 11 The oblique rod part at the bottom end penetrates the oblique groove on the first slider seat 12. The oblique guide rod 11 is used to drive the first slider seat 12 to slide away from the lower mold core 10 when the mold is opened. The insert pin 14 passes through The side slider 13 is connected with the first slider seat 12; the lower mold insert 15 is embedded on the lower mold core 10, and the insert pin 14 corresponds to the position of the lower mold insert 15; the lower mold insert 15 The top end is provided with a forming convex structure for forming the slot 31 on the box cover 30; the second slider seat 16 is connected with the upper template 3 by screws, and the second slider seat 16 faces the upper mold core A trapezoidal slider 17 is provided on one side of The block 18 retracts and slides relative to the trapezoidal slider 17, thereby realizing core pulling and giving way; The top seat 20 is hinged.

The first slider seat 12 is located in the chute on both sides of the upper die plate 3 in the width direction, the first slider seat 12 is located on both sides of the upper die core 9 in the width direction, and the side sliders 13 are located on the upper die core 9. Inside, the number of inserts 14 on one side slider 13 is two, and they are arranged symmetrically with respect to the side slider 13.

The insert needles 14 are arranged horizontally, and the insert needles 14 are in the shape of elongated rods. The insert needles 14 are specifically stepped shafts, which are used to form the through holes 32 on the box cover 30 . The ends of the insert needles 14 Contact with the side of the lower die insert 15 .

The second slider seat 16 is located in the chute at both ends of the upper die plate 3 in the length direction, and the second slider seat 16 is located on both sides of the upper mold core 9 in the length direction; The guide post is movably connected with the trapezoidal slider 17 . When the second slider seat 16 moves, the trapezoidal slider 17 can be linked by the inclined guide post, so that the trapezoidal slider 17 moves away from the lower die core 10 .

One end of the trapezoidal slider 17 away from the second slider seat 16 is provided with a snap forming groove, the inner retracting slider 18 is symmetrically arranged with respect to the trapezoidal slider 17, Dowel forming hole.

The trapezoidal slider 17 and the retracting slider 18 are both located in the guide groove 21 on the upper die core 9. The retracting slider 18 includes an oblique guide portion 181 and a side guide portion 182. The oblique guide portion 181 passes through a dovetail structure. It moves with the oblique side of the trapezoidal slider 17. When the trapezoidal slider 17 moves, under the combined action of the oblique side and the dovetail groove, the retracting slider 18 will realize linkage, so that the positioning pin forming hole is separated from the positioning on the box cover 30. The positioning pin forming hole is specifically located at the end of the inclined guide portion 181 away from the second slider seat 16 , and the positioning pin forming hole is used to form the positioning pin 35 on the box cover 30 .

The inclined top 19 is in the shape of a 7, and the top of the inclined top 19 is provided with a molding groove for forming the inner buckle 33 on the box cover 30 , and the inclined top seat 20 penetrates the thimble panel 7 .

The working principle of the present invention is as follows: after the injection molding machine drives the mold to close the mold, the injection molding operation starts, and after the injection molding and cooling, the mold opening operation starts; first, the injection molding machine moves the top plate 1, the backing plate 2 and the upper template 3, and the upper template 3 is separated from the lower template 4. During the separation process, the top plate 1 drives the oblique guide rod 11 to move, and then the first slider seat 12 moves away from the lower mold insert 15 through the interaction between the oblique rod and the oblique groove. , drive the side slider 13 and the insert pin 14 to move together until the insert pin is pulled out from the through hole 32 on the box cover 30 to give way; at the same time, the upper die plate 3 drives the second slider seat 16 to move, and in the oblique guide Under the action of the column, the trapezoidal sliding block 17 moves in the direction away from the lower die core 10, so that the buckle forming groove on the trapezoidal sliding block 17 is released from the buckle 34 on the box cover 30, so as to give way; in the trapezoidal sliding block 17 While moving, under the action of the dovetail groove and the guide groove 21, the retracting slider 18 moves inwardly relative to the trapezoidal slider 17 in the direction of the guide groove 21, so that the positioning pin forming hole on the inclined guide portion 181 is disengaged The positioning pin 35 on the box cover 30 realizes the position; then the injection molding machine drives the ejector panel 7 and the ejector pad 8 to move together, and the inclined top seat 20 on the ejector pad 8 drives the inclined top 19 upward relative to the lower mold core 10 Lift up, so that the inclined top 19 can be retracted relative to the lower mold core 10, so that the molding groove on the inclined top 19 is released from the inner buckle on the box cover 30 to achieve a space, and the thimble can remove the box cover at this time. 30 products are ejected from the lower die core 10 to realize demoulding and blanking.

In the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention should be understood as being within the protection scope of the present invention.

Claims (7)

1. An injection mold of a pressed powder box cover comprises a top plate (1), a base plate (2), an upper mold plate (3), a lower mold plate (4), mold feet (5) and a bottom plate (6) which are sequentially stacked from top to bottom; the inner side of the mould foot (5) is provided with a thimble panel (7) and a thimble cushion plate (8); an upper mold core (9) is arranged in the upper template (3), and a lower mold core (10) is arranged in the lower template (4); the method is characterized in that: the device also comprises an inclined guide rod (11), a first slider seat (12), an insert pin (14), a lower die insert (15), a second slider seat (16), a retraction slider (18) and an inclined top (19); the top end of the inclined guide rod (11) is connected with the top plate (1) through a screw, an inclined rod part at the bottom end of the inclined guide rod (11) penetrates through an inclined groove in the first sliding block seat (12), and the insert pin (14) is connected with the first sliding block seat (12) through a side sliding block (13); the lower die insert (15) is embedded on the lower die core (10), and the embedding pin (14) corresponds to the lower die insert (15); the top end of the lower die insert (15) is provided with a forming bulge structure; the second sliding block seat (16) is connected with the upper template (3) through a screw, a trapezoidal sliding block (17) is arranged on one side, facing the upper die core (9), of the second sliding block seat (16), and the inward-shrinkage sliding block (18) is movably connected with two oblique sides of the trapezoidal sliding block (17) through a dovetail groove structure; the inclined ejector (19) penetrates through the lower template (4) and the lower die core (10), and the bottom end of the inclined ejector (19) is hinged with an inclined ejector seat (20) on the ejector pin cushion plate (8).

2. The muffin lid injection mold of claim 1, wherein: the first sliding block seat (12) is positioned in sliding grooves on two sides of the upper template (3) in the width direction, the first sliding block seat (12) is positioned on two sides of the upper die core (9) in the width direction, the side sliding blocks (13) are positioned inside the upper die core (9), and the number of the insert pins (14) on one side sliding block (13) is two.

3. The muffin lid injection mold of claim 2, wherein: the insert pin (14) is horizontally arranged, the insert pin (14) is in a slender rod shape, the insert pin (14) is specifically a stepped shaft, and the end head of the insert pin (14) is in contact with the side surface of the lower die insert (15).

4. The muffin lid injection mold of claim 3, wherein: the second sliding block seats (16) are positioned in sliding grooves at two ends of the upper template (3) in the length direction, and the second sliding block seats (16) are positioned at two sides of the upper die core (9) in the length direction; the second sliding block seat (16) is movably connected with the trapezoidal sliding block (17) through an inclined guide post.

5. The muffin lid injection mold of claim 4, wherein: the one end that second slider seat (16) was kept away from in trapezoidal slider (17) is provided with buckle shaping groove, the slider that contracts in (18) are the symmetry form setting for trapezoidal slider (17), be provided with locating pin shaping hole on the slider that contracts in (18).

6. The muffin lid injection mold of claim 5, wherein: the trapezoidal sliding block (17) and the inward-shrinkage sliding block (18) are both located in a guide groove (21) on the upper die core (9), the inward-shrinkage sliding block (18) comprises an oblique guide part (181) and a side guide part (182), and the positioning pin forming hole is specifically located at one end, far away from the second sliding block seat (16), of the oblique guide part (181).

7. The muffin lid injection mold of claim 6, wherein: the angle lifter (19) is 7-shaped, a forming groove is formed in the top end of the angle lifter (19), and the angle lifter seat (20) penetrates through the ejector panel (7).

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