CN216100213U

CN216100213U - Thimble structure

Info

Publication number: CN216100213U
Application number: CN202121312096.7U
Authority: CN
Inventors: 肖洪斌; 汤铁装; 李卫荣; 李硕; 文洪; 庞栋; 曾超辉; 杨潘
Original assignee: Dongguan Eontec Co Ltd
Current assignee: Dongguan Eontec Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-03-22
Anticipated expiration: 2031-06-11

Abstract

The utility model discloses a slider thimble structure, which comprises an upper die and a lower die which form a cavity, wherein the lower die comprises a slider component for forming a workpiece and a thimble component for ejecting a product; the thimble assembly comprises a first thimble, the lower die is also provided with a first mounting hole for the first thimble to pass through, the lower die is also provided with a connecting groove for communicating the first mounting hole with the die cavity, and the first mounting hole and the sliding block assembly are arranged at intervals; when the sliding block of the sliding block component slides to a preset discharging position, the first ejector pin can extend out of the first mounting hole to eject a formed workpiece. The first ejector pin is not positioned on the sliding path of the sliding block, so that the first ejector pin cannot be broken by the sliding block due to misoperation, and the service life of the die is effectively prolonged.

Description

Thimble structure

Technical Field

The utility model relates to the field of molds, in particular to a thimble structure.

Background

The slide block is a mold component which can slide in a direction perpendicular to the mold opening and closing direction or at a certain angle with the mold opening and closing direction during the mold opening action of the mold.

In the prior art, a sliding groove for sliding a sliding block is arranged in a die structure, a through hole for moving an ejector pin assembly is formed in the bottom of the sliding groove, after a workpiece is cooled and molded, the sliding block moves to a preset discharging position to avoid the obstruction of ejecting the workpiece, and an ejector pin rises to eject the workpiece.

The prior art has the following problems that once the ejector pin is broken in the process of ejecting a workpiece, the broken part is easily ejected into a cavity or other die parts to cause die damage due to being positioned on a moving path of the sliding block, and the service life of the die is shortened.

In view of this, it is desirable to provide an ejector pin structure to prolong the service life of the mold.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a thimble structure to solve the problems.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a slider thimble structure comprises an upper die and a lower die which form a cavity, wherein the lower die comprises a slider component for forming a workpiece and a thimble component for ejecting a product;

the thimble assembly comprises a first thimble, the lower die is further provided with a first mounting hole for the first thimble to pass through, the lower die is further provided with a connecting groove for communicating the first mounting hole with the cavity, and the first mounting hole and the sliding block assembly are arranged at intervals;

when the sliding block of the sliding block component slides to a preset discharging position, the first ejector pin can extend out of the first mounting hole to eject a formed workpiece.

Optionally, the ejector pin assembly further comprises a second ejector pin which is lifted synchronously with the first ejector pin, the lower die is further provided with a second mounting hole through which the second ejector pin passes, the first mounting hole is parallel to the second mounting hole, and the second mounting hole is communicated with the cavity;

the first ejector pins and the second ejector pins are respectively arranged on two opposite sides of the sliding block component, and the second ejector pins and the sliding block component are arranged at intervals.

Optionally, the lower die is provided with a sliding groove for the sliding of the sliding block, the connecting groove comprises a groove communicated with the first mounting hole and the second mounting hole, the groove is arranged around the sliding groove, and a surrounding path of the groove is in a U shape.

Optionally, a diameter of the first thimble is consistent with a diameter of the first mounting hole, and a diameter of the second thimble is consistent with a diameter of the second mounting hole.

Optionally, the connecting groove further includes an L-shaped groove communicated with the groove, one end of the L-shaped groove is communicated with the cavity, and the other end of the L-shaped groove is communicated with the groove.

Optionally, the L-shaped groove and the groove are V-shaped grooves, rectangular grooves or U-shaped grooves.

Optionally, the lower die further includes a thimble push plate, one end of the first thimble, which is far away from the upper die, is connected to the thimble push plate, and one end of the second thimble, which is far away from the upper die, is connected to the thimble push plate;

the thimble push plate is used for pushing the first thimble and the second thimble to lift synchronously.

Optionally, during injection molding, the end surface of the first ejector pin, which is far away from the ejector pin push plate, is flush with the groove bottom of the groove.

Optionally, the sliding direction of the sliding block is perpendicular to the center line of the first thimble.

Compared with the prior art, the utility model has the following beneficial effects:

in the embodiment, the device comprises an upper die and a lower die which form a cavity, wherein the lower die comprises a sliding block assembly for forming a workpiece and an ejector pin assembly for ejecting a product; the thimble assembly comprises a first thimble, the lower die is also provided with a first mounting hole for the first thimble to pass through, the lower die is also provided with a connecting groove for communicating the first mounting hole with the die cavity, and the first mounting hole and the sliding block assembly are arranged at intervals; when the sliding block of the sliding block component slides to a preset discharging position, the first ejector pin can extend out of the first mounting hole to eject a formed workpiece. The ejector pin assembly and the sliding block assembly are arranged separately, and the first ejector pin is not located on the sliding path of the sliding block, so that the first ejector pin cannot be broken by the sliding block, and the service life of the die is effectively prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the utility model, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the utility model without affecting the effect and the achievable purpose of the utility model.

Fig. 1 is a schematic top view of a slider thimble structure according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of position A of FIG. 1;

fig. 3 is a schematic perspective view of a slider thimble structure according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of position B of FIG. 3;

FIG. 5 is a schematic cross-sectional view of an embodiment of the present invention taken along a centerline of a first needle and a centerline of a second needle;

FIG. 6 is an enlarged schematic view of position D of FIG. 5;

FIG. 7 is a schematic top view of a slider thimble structure with a hidden slider according to an embodiment of the present invention;

fig. 8 is an enlarged schematic view of the position C in fig. 7.

Illustration of the drawings: 1. a lower die; 11. a chute; 12. a thimble push plate; 101. a trench; 102. an L-shaped slot; 2. a slider assembly; 3. a thimble assembly; 31. a first thimble; 32. a second thimble; 100. a workpiece; 10. a mold core; 4. a slide block.

Detailed Description

In order to make the objects, features and advantages of the present invention more apparent and understandable, the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings, and it is to be understood that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Referring to fig. 1 to 8, an embodiment of the present invention provides a slider thimble structure, which is characterized in that the slider thimble structure includes an upper die and a lower die 1 forming a cavity, where the lower die 1 includes a slider assembly 2 for molding a workpiece 100 and a thimble assembly 3 for ejecting a product;

the thimble assembly 3 comprises a first thimble 31, the lower die 1 is also provided with a first mounting hole for the first thimble 31 to pass through, the lower die 1 is also provided with a connecting groove for communicating the first mounting hole with the die cavity, and the first mounting hole and the sliding block assembly 2 are arranged at intervals;

when the slide block 4 of the slide block assembly 2 slides to the preset discharging position, the first ejector pin 31 can extend out of the first mounting hole to eject the formed workpiece 100.

It should be noted that, during injection molding, the injection molding material may enter the end of the first mounting hole close to the upper die along the connecting groove. After the workpiece 100 is cooled and formed, the first ejector pin 31 can push the whole workpiece 100 out of the cavity through the portion formed in the first mounting hole, and discharging is completed. Because the first thimble 31 is not located on the sliding path of the slide block 4, the situation that the slide block 4 breaks the first thimble 31 is not generated, and the service life of the mold is effectively prolonged.

Optionally, the thimble assembly 3 further includes a second thimble 32 that is lifted synchronously with the first thimble 31, the lower die 1 is further provided with a second mounting hole for the second thimble 32 to pass through, the first mounting hole is parallel to the second mounting hole, and the second mounting hole is communicated with the cavity;

the first thimble 31 and the second thimble 32 are respectively disposed on two opposite sides of the slider assembly 2, and the second thimble 32 and the slider assembly 2 are disposed at an interval.

Specifically, the first thimble 31 and the second thimble 32 are respectively disposed on two opposite sides of the slider assembly 2, so that the deformation of the workpiece 100 caused by single-point ejection can be well avoided. In addition, the first thimble 31 and the second thimble 32 are both spaced apart from the slider 4.

Optionally, the lower die 1 is provided with a sliding groove 11 for sliding the sliding block, the connecting groove includes a groove 101 communicating the first mounting hole and the second mounting hole, the groove 101 is disposed around the sliding groove 11, and a surrounding path of the groove 101 is U-shaped. Specifically, the molding material fills the groove 101 and is formed into a U-shaped component, which is connected to the main body of the workpiece 100, and the first pin 31 and the second pin 32 complete the discharge of the workpiece 100 by pushing the component. It should be appreciated that the component parts may be cut off in a subsequent process after the workpiece 100 is completely discharged. It should be noted that, the positions where the first thimble 31 and the second thimble 32 are pushed are both cut off, so that the surface quality of the product is not affected, and defects such as pits are prevented from being pushed out on the surface of the product.

Alternatively, the diameter of the first thimble 31 is the same as the diameter of the first mounting hole, and the diameter of the second thimble 32 is the same as the diameter of the second mounting hole. It should be noted that, by means of the high-precision fit between the first thimble 31 and the first mounting hole, a sealing structure for preventing the injection molding material from leaking is formed. In a similar way, the injection molding raw material is prevented from being leaked through the high-precision matching of the second ejector pin 32 and the second mounting hole.

Optionally, the connecting groove further comprises an L-shaped groove 102 communicating with the groove 101, one end of the L-shaped groove 102 communicates with the cavity, and the other end of the L-shaped groove 102 communicates with the groove 101.

Specifically, the injection molding material flows to the groove 101 through the L-shaped groove 102, and it should be noted that one side of the first mounting holes may be directly communicated with the groove 101, or the first mounting holes and the groove 101 are communicated through an open communication groove.

Optionally, the L-shaped groove 102 and the groove 101 are V-shaped grooves, rectangular grooves, or U-shaped grooves. It should be noted that the V-shaped groove, the rectangular groove, or the U-shaped groove does not hinder the workpiece 100 from being pushed out when the workpiece 100 is pushed out.

Specifically, a portion of the L-shaped groove 102 is disposed on the mold insert 10, and another portion is disposed on the mold frame of the lower mold.

Optionally, the lower die 1 further includes a thimble push plate 12, an end of the first thimble 31 away from the upper die is connected to the thimble push plate 12, and an end of the second thimble 32 away from the upper die is connected to the thimble push plate 12;

the thimble push plate 12 is used for pushing the first thimble 31 and the second thimble 32 to synchronously lift.

Specifically, the ejector pin pushing plate 12 is driven by a driving device, not shown, to move up and down along the center line direction of the first mounting hole, and pushes the first ejector pin 31 and the second ejector pin 32 to move up and down synchronously.

In a specific embodiment, during injection molding, the end surface of the first thimble far away from the thimble pushing plate 12 is flush with the bottom of the groove. It should be appreciated that the height of the end surface of the first ejector pin, which is away from the ejector pin pushing plate 12, can be flexibly set during injection molding.

Optionally, the sliding direction of the sliding block 4 is perpendicular to the center line of the first thimble 31.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A slider thimble structure is characterized by comprising an upper die and a lower die (1) which form a cavity, wherein the lower die (1) comprises a slider component (2) for forming a workpiece and a thimble component (3) for ejecting a product;

the thimble assembly (3) comprises a first thimble (31), the lower die (1) is further provided with a first mounting hole for the first thimble (31) to pass through, the lower die (1) is further provided with a connecting groove for communicating the first mounting hole with the die cavity, and the first mounting hole and the sliding block assembly (2) are arranged at intervals;

when the sliding block (4) of the sliding block component (2) slides to a preset discharging position, the first ejector pin (31) can extend out of the first mounting hole to eject a formed workpiece.

2. The slider thimble structure according to claim 1, wherein the thimble assembly (3) further comprises a second thimble (32) that is lifted synchronously with the first thimble (31), the lower die (1) further defines a second mounting hole for the second thimble (32) to pass through, the first mounting hole is parallel to the second mounting hole, and the second mounting hole is communicated with the cavity;

the first ejector pin (31) and the second ejector pin (32) are respectively arranged on two opposite sides of the sliding block component (2), and the second ejector pin (32) and the sliding block component (2) are arranged at intervals.

3. The slider thimble structure according to claim 2, wherein said lower mold (1) is provided with a sliding groove (11) for sliding said slider (4), said connecting groove comprises a groove (101) communicating said first mounting hole and said second mounting hole, said groove (101) is disposed around said sliding groove (11), and a surrounding path of said groove (101) is U-shaped.

4. The slider thimble structure according to claim 3, wherein said connecting groove further comprises an L-shaped groove (102) communicating with said groove (101), one end of said L-shaped groove (102) communicating with said cavity, and the other end of said L-shaped groove (102) communicating with said groove (101).

5. The slider thimble structure of claim 4, wherein said L-shaped slot (102) and said groove (101) are V-shaped, rectangular or U-shaped.

6. The slider thimble structure of claim 2, wherein the diameter of the first thimble (31) is substantially the same as the diameter of the first mounting hole, and the diameter of the second thimble (32) is substantially the same as the diameter of the second mounting hole.

7. The slider thimble structure according to claim 3, wherein the lower mold (1) further comprises a thimble push plate (12), wherein an end of the first thimble (31) away from the upper mold is connected to the thimble push plate (12), and an end of the second thimble (32) away from the upper mold is connected to the thimble push plate (12);

the thimble push plate (12) is used for pushing the first thimble (31) and the second thimble (32) to synchronously lift.

8. The slider thimble structure of claim 7, wherein an end surface of said first thimble remote from said thimble push plate (12) is flush with a bottom of said groove (101) during injection molding.

9. The slider thimble structure according to claim 1, wherein the sliding direction of the slider (4) is perpendicular to the center line of the first thimble (31).