CN223604943U - An ejection mechanism and injection mold for an inverted product - Google Patents
An ejection mechanism and injection mold for an inverted productInfo
- Publication number
- CN223604943U CN223604943U CN202520007108.7U CN202520007108U CN223604943U CN 223604943 U CN223604943 U CN 223604943U CN 202520007108 U CN202520007108 U CN 202520007108U CN 223604943 U CN223604943 U CN 223604943U
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- support block
- mold
- mold core
- ejection mechanism
- supporting block
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Abstract
The utility model provides an ejection mechanism of an inner side back-off product and an injection mold, the ejection mechanism of the inner side back-off product comprises an inclined ejector rod and a time-delay supporting structure, the inclined ejector rod is obliquely arranged on a movable mold core in a penetrating mode, the inclined ejector rod is provided with a forming surface for forming the inner side back-off, a containing cavity and a penetrating hole penetrating from the containing cavity to the forming surface, the time-delay supporting structure comprises a supporting block and an elastic piece, the supporting block is assembled in the containing cavity and can move in a direction perpendicular to a mold opening and closing direction, the supporting block is provided with an ejector pin and a supporting side face which are oppositely arranged, the ejector pin of the supporting block penetrates through the penetrating hole, the movable mold core is provided with a supporting plane parallel to the mold opening and closing direction, and the supporting block enables the supporting side face to be in contact with the supporting plane of the movable mold core under the action of the elastic piece. The inner side inverted buckle product can be smoothly demolded, and the yield is ensured.
Description
Technical Field
The utility model relates to the field of injection molds, in particular to an ejection mechanism of an inner side inverted buckle product and an injection mold.
Background
The injection mold is a tool for producing plastic products, is also a tool for endowing the molded plastic products with complete structures and accurate dimensions, is a processing method used for mass production of parts with complex shapes, and specifically refers to a method for obtaining molded products after the heated and melted plastics are injected into a mold cavity under high pressure after being heated by a screw of an injection molding machine and cooled and solidified.
In some products, such as plastic covers, an inside back-off is typically designed to achieve a multi-piece assembly snap-fit. When the product is injection molded, the inclined ejection rod is conventionally adopted for inclined ejection, so that the demolding is realized. However, after injection molding, the back-off of the product is embedded on the inclined ejector rod and is not easy to separate, and the inclined ejector rod is adopted to directly incline and eject the product so as to be easily damaged, thereby causing the problems of low yield, even incapability of demolding and the like.
Disclosure of utility model
Therefore, the utility model provides an ejection mechanism and an injection mold for an inner inverted buckle product to solve the problems.
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
The ejection mechanism of the inner side inverted buckle product comprises an inclined ejector rod and a time delay supporting structure, wherein the inclined ejector rod is obliquely arranged on a movable die core in a penetrating mode, the inclined ejector rod is provided with a forming surface for forming the inner side inverted buckle, a containing cavity and a penetrating hole penetrating from the containing cavity to the forming surface, the time delay supporting structure comprises a supporting block and an elastic piece, the supporting block is assembled in the containing cavity and can move in the direction perpendicular to a die opening and closing direction, the supporting block is provided with an ejector pin and an abutting side face which are oppositely arranged, the ejector pin of the supporting block is arranged in the penetrating hole in a penetrating mode, the movable die core is provided with an abutting plane parallel to the die opening and closing direction, and the abutting side face is abutted to the abutting plane of the movable die core under the action of the elastic piece.
Further, a limiting slot hole is formed in the supporting block, a limiting pin is arranged on the inclined ejector rod, and the limiting pin penetrates through the limiting slot hole of the supporting block to limit the supporting block to be separated from the accommodating cavity.
Further, the elastic piece is a spring, the supporting block is provided with an installation groove, the spring is accommodated in the installation groove of the supporting block, and two ends of the spring are respectively abutted against the inner wall of the accommodating cavity and the bottom of the installation groove.
Further, the abutting side surface of the supporting block is a plane parallel to the abutting plane, an inclined guide surface on the same side as the abutting side surface is further arranged on the supporting block, and the inclined guide surface is positioned at the rear end of the abutting side surface in the ejection direction of the inclined ejector rod.
Further, the rear end of the abutting plane of the movable die core is provided with an inclined limiting surface parallel to the inclined guiding surface.
The injection mold for the inner side inverted buckle product comprises a static mold, a static mold core, a movable mold and a movable mold core, wherein the static mold core is assembled on the static mold, the movable mold core is assembled on the movable mold, the static mold and the movable mold are clamped to enable the static mold core and the movable mold core to be closed and enclose to form a cavity, the movable mold core is provided with an ejection mechanism of the inner side inverted buckle product, and the inclined ejector rod is further connected with an ejector plate of the movable mold.
Furthermore, a plurality of ejection mechanisms of the inner inverted buckle products are arranged and distributed on the opposite sides of the movable mold core.
Further, in the state that the static mold and the movable mold are closed, the ejector pins of the supporting blocks are flush with the molding surface.
The technical scheme provided by the utility model has the following beneficial effects:
When demoulding, the inclined ejector rod is obliquely ejected, and in the ejection process, the abutting plane of the driven mold core of the supporting block is abutted and limited, so that the position of the supporting block is kept in the direction vertical to the mold opening and closing, and the product is always supported by the ejector pin of the supporting block in the lateral deviation process of the inclined ejector rod, so that the inverted buckle of the product is well ensured to be separated from the inclined ejector rod, the product is stably ejected out, and when the inclined ejector rod is ejected to the abutting limit of the abutting plane of the movable mold core of the supporting block, the ejector pin of the supporting block cancels the supporting of the product to enable the product to be demoulded, and the injection molding yield of the product can be effectively improved.
Drawings
FIG. 1 is a cross-sectional view of an injection mold for an inside-out product in an embodiment at mold closing;
FIG. 2 is an enlarged schematic view of area A of FIG. 1;
FIG. 3 is a partial cross-sectional view of an injection mold for an inside-out product after injection molding is completed in accordance with an embodiment;
FIG. 4 is an enlarged schematic view of region B of FIG. 3;
FIG. 5 is a partial cross-sectional view of an injection mold for an inside-out product during a demolding process in accordance with an embodiment;
Fig. 6 is a partial cross-sectional view of an injection mold for an inside-out product in accordance with an embodiment during a demolding process.
Detailed Description
For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.
In the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", and the like are used for convenience of description and simplicity of operation only, and do not denote or imply that the apparatus or elements in question must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
The utility model will now be further described with reference to the drawings and detailed description.
Referring to fig. 1 and 2, the ejection mechanism for an inner inverted buckle product provided in this embodiment includes an inclined ejector rod 11 and a time delay supporting structure, where the inclined ejector rod 11 is obliquely inserted on a movable mold core 32, specifically, the oblique insertion refers to an opening and closing direction oblique to an injection mold, and defines an opening and closing direction of the injection mold as a front and rear direction. The inclined ejector rod 11 is provided with a molding surface 111 for molding the inner inverted buckle, a containing cavity 112 and a through hole penetrating from the containing cavity 112 to the molding surface 111, the time delay supporting structure comprises a supporting block 12 and an elastic piece 13, the supporting block 12 is assembled in the containing cavity 112 and can move in the direction perpendicular to the mold opening and closing, and the supporting block 12 can move in the left and right direction perpendicular to the mold opening and closing in the embodiment. The supporting block 12 has a top pin 121 and an abutment side 122 disposed opposite to each other, the top pin 121 of the supporting block 12 is disposed in the through hole, the movable mold core 32 is provided with an abutment plane 321 parallel to the mold opening and closing direction, the supporting block 12 makes the abutment side 122 abut against the abutment plane 321 of the movable mold core 32 under the action of the elastic member 13, that is, the elastic member 13 applies an elastic force to the supporting block 12 toward the abutment plane 321.
The embodiment also provides an injection mold for the inner side inverted buckle product, which comprises a static mold 21, a static mold core 31 assembled on the static mold 21, a movable mold 22 and a movable mold core 32 assembled on the movable mold 22, wherein the static mold 21 and the movable mold core 32 are closed by the mold clamping of the static mold 21 and the movable mold 22 to form a forming cavity 101, the movable mold core 32 is provided with the ejection mechanism for the inner side inverted buckle product, and the inclined ejector rod 11 is also connected with an ejector plate 221 of the movable mold 22.
With continued reference to fig. 3 to 6, in the solution provided in this embodiment, the stationary mold 21 and the movable mold 22 perform injection molding of the product 1 in a mold-closed state, after the product 1 is molded, the stationary mold 21 and the movable mold 22 perform mold opening, and the inclined ejector rod 11 ejects by driving the ejector plate 221 of the movable mold 22, specifically, causes the inclined ejection, that is, the forward ejection, and simultaneously, moves laterally (left and right directions), so as to separate laterally from the product 1. In this process, the abutment plane 321 of the passive mold core 32 of the supporting block 12 abuts against and limits, so that the supporting block is kept stationary in the left-right direction, and therefore, when the oblique ejector 11 is separated laterally, the ejector pin 121 of the supporting block 12 can abut against the side surface of the product 1 to keep the product 1 in the left-right direction, so that the separation of the inverted buckle and the oblique ejector 11 is realized, as shown in fig. 5. When the inclined ejection rod 11 is ejected to the supporting block 12 and the abutting limit of the abutting plane 321 of the movable die core 32 is lost, the ejection pin 121 of the supporting block 12 loses the support of the product 1 so as to enable the product 1 to be demolded, and therefore the injection molding yield of the product 1 can be effectively improved.
Further, in this embodiment, the supporting block 12 is provided with a limiting slot 124, the inclined ejector rod 11 is provided with a limiting pin 14, and the limiting pin 14 is inserted into the limiting slot 124 of the supporting block 12 to limit the supporting block 124 from being separated from the accommodating cavity 112. When the supporting block 12 loses the abutting limit of the abutting plane 321 of the movable mold core 32, the supporting block 12 can not be separated from the accommodating cavity 112 by the limiting fit of the limiting pin 14 and the limiting slot 124, so that the next operation is ensured. The limit pin 14 is adopted to be in limit fit with the limit slot 124, so that the structure is simple and the implementation is easy. Of course, in other embodiments, the limitation may be performed by other limiting manners, such as providing a limiting boss at the opening of the accommodating cavity 112.
In this embodiment, the elastic member 13 is a spring, the supporting block 12 is provided with an installation groove 125, the spring is accommodated in the installation groove 125 of the supporting block 12, two ends of the spring respectively abut against the inner wall of the accommodating cavity 112 and the bottom of the installation groove 125, so that stable assembly of the spring is realized, and the assembly structure is simple and compact. Of course, in other embodiments, the elastic member 13 may be replaced by other elastic members, such as tension springs, elastic sheets, etc., as long as the elastic force in the direction toward the abutment plane 321 of the movable mold core 32 can be applied to the supporting block 12.
The contact side surface 122 of the support block 12 is a plane parallel to the contact plane 321, and is stably bonded to the contact plane 321. The support block 12 is further provided with an inclined guide surface 123 on the same side as the abutment side surface 122, and the inclined guide surface 123 is positioned at the rear end of the abutment side surface 122 in the ejection direction of the tilt lever 11. When the supporting block 12 is separated from the movable die core 32 and is clamped again, the backward movement of the inclined ejector rod 11 can enable the inclined guide surface 123 of the supporting block 12 to abut against the movable die core 32, guide matching can be formed, the supporting block can smoothly retract against the action of the elastic piece 13, the abutting side surface 122 of the supporting block 12 is enabled to abut against the abutting plane 321 again, resetting is achieved, and clamping is not easy to occur.
Furthermore, the movable mold core 32 is provided with an inclined limiting surface 322 parallel to the inclined guiding surface 123 at the rear end of the abutting plane 321, so that when the inclined ejector rod 11 is retracted in place, the inclined guiding surface 123 of the supporting block 12 abuts against the inclined limiting surface 322 of the movable mold core 32 to realize limiting, and the positioning effect is good, so that the demolding stroke is ensured.
Further, in the state that the stationary mold 21 and the movable mold 22 are closed, the top pins 121 of the supporting blocks 12 are flush with the molding surface 111, so that the surface of the molded product 1 is smooth.
In this embodiment, because the back-off of the product 1 is four, the ejection mechanisms of the back-off product on the inner side are four and distributed on opposite sides of the movable mold core 32, so as to form four back-off structures respectively. Of course, in other embodiments, the number and distribution of the ejection mechanisms may be selected based on the actual layout of the product.
While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520007108.7U CN223604943U (en) | 2025-01-03 | 2025-01-03 | An ejection mechanism and injection mold for an inverted product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520007108.7U CN223604943U (en) | 2025-01-03 | 2025-01-03 | An ejection mechanism and injection mold for an inverted product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223604943U true CN223604943U (en) | 2025-11-28 |
Family
ID=97790435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520007108.7U Active CN223604943U (en) | 2025-01-03 | 2025-01-03 | An ejection mechanism and injection mold for an inverted product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223604943U (en) |
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2025
- 2025-01-03 CN CN202520007108.7U patent/CN223604943U/en active Active
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