CN219236039U

CN219236039U - Mold ejection system and corresponding bracket shell injection mold

Info

Publication number: CN219236039U
Application number: CN202320188300.1U
Authority: CN
Inventors: 周平
Original assignee: Dongguan Jiezhihe Plastic Industry Co ltd
Current assignee: Dongguan Jiezhihe Plastic Industry Co ltd
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-06-23
Anticipated expiration: 2033-02-08

Abstract

The utility model provides a die ejection system and a corresponding bracket shell injection die. One end and push pedal fixed connection of straight push rod subassembly, the other end through connection is in lower mould benevolence, and the one end and the push pedal fixed connection of connecting rod, the other end and movable push rod swing joint, movable push rod slope through connection are provided with inwards bellied convex part on the medial surface of support shell in the lower mould benevolence, are provided with the recess that is used for forming the convex part on the movable push rod. According to the die ejection system, the straight push rod assembly is arranged to better push out the support shell, the stress is more uniform, meanwhile, the movable push rod is arranged, in the process of pushing out the support shell, the movable push rod is gradually far away from the inner side surface of the support shell, so that the convex part can be separated from the groove when the support shell is pushed out, and then the product can be taken out more conveniently and more efficiently.

Description

Mold ejection system and corresponding bracket shell injection mold

Technical Field

The utility model relates to the field of mold equipment, in particular to a mold ejection system and a corresponding bracket shell injection mold.

Background

Injection molding is a common production facility in the modern industry that injects molten plastic material into a mold cavity at high pressure, and after cooling and solidification, a molded article is obtained, which is then ejected, typically using an ejection system. The injection mold is used for directly pushing out the injection molding product after cooling and forming the product in the prior art, and is generally two straight pushing rods, three straight pushing rods distributed in a triangular mode, four straight pushing rods distributed in four corners or the like, the ejection stress is lack of pertinence, the defect that the local structure of the support shell is obvious in stress trace, crush injury and the like is easily caused, and the product is still not convenient enough to take out after ejection.

It is desirable to provide a mold ejection system to solve the above-mentioned problems.

Disclosure of Invention

The utility model provides a die ejection system, which solves the problems that the die ejection system in the prior art is easy to cause obvious stress marks, crush injuries and the like of a local structure of a support shell, and the product is still not convenient enough to take out after ejection, and the efficiency is low.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a mold ejection system for ejecting a carrier shell wrapped on a lower core, the carrier shell being injection molded and having an interior cavity, the mold ejection system comprising: the device comprises a push plate, a connecting rod, a movable push rod and a straight push rod assembly;

one end of the straight push rod component is fixedly connected with the push plate, the other end of the straight push rod component is in through connection with the lower die core, one end of the connecting rod is in fixed connection with the push plate, the other end of the connecting rod is in movable connection with the movable push rod, the movable push rod is obliquely and through connected with the lower die core, an inward protruding part is arranged on the inner side surface of the support shell, a groove for forming the protruding part is arranged on the movable push rod, when the support shell is wrapped on the lower die core, the movable push rod is simultaneously in contact with the inner top surface and the inner side surface of the support shell, when the support shell is pushed away from the lower die core, the movable push rod is in contact with the inner top surface of the support shell, and the movable push rod is in a set distance with the inner side surface of the support shell.

In the utility model, the lower die core is provided with a containing groove, two die cores are detachably arranged in the containing groove, a cavity for injection molding the bracket shell is formed between the die cores and the inner wall of the containing groove, and the movable push rod penetrates through between each die core and the lower die core;

the mold core is provided with a first positioning groove used for being in positioning connection with the movable push rod, and the inner wall of the accommodating groove is provided with a second positioning groove used for being in positioning connection with the movable push rod.

Further, the first positioning groove and the second positioning groove extend obliquely to a direction approaching to the center of the support shell.

In addition, the two sides of the part of the rod section of the movable push rod, which is positioned in the lower die core, are provided with an inclined surface and a vertical surface, the inclined surface is in contact with the inner surface of the first positioning groove, and the vertical surface is used for forming the inner surface of the die cavity.

In the utility model, the straight push rod assembly comprises a first straight push rod and a second straight push rod, the bracket shell comprises an outer shell part and an inner shell part, the inner shell part is connected in the outer shell part and forms an intersection part, and the two sides of the intersection part are respectively provided with the first straight push rod and the second straight push rod.

Further, the first straight pushing rod is a cylindrical rod and is located at an included angle between the inner shell part and the outer shell part, the second straight pushing rod is a rectangular rod, and the second straight pushing rod is in surface contact with the surface of the inner shell part.

In the utility model, the two inner shell parts are correspondingly formed at the periphery of the two mold cores, and a third straight push rod is further arranged at the position, far away from the shell plate of the outer shell part, of the two inner shell parts, and is a rectangular rod.

In the utility model, the inclination angle of the movable push rod is between 3 degrees and 6 degrees.

In the utility model, a cavity for injection molding the support shell is formed between the upper part of the mold core and the inner wall of the accommodating groove, and the lower part of the mold core is positioned in contact with the inner wall surface of the accommodating groove.

The utility model also comprises a bracket shell injection mold, the mold ejection system comprises an upper mold base, a lower mold base, an upper mold core and a pouring assembly, wherein the upper mold core and the lower mold core are in butt joint, are positioned between the upper mold base and the lower mold base, a cavity for injecting the bracket shell is formed between the upper mold core and the lower mold core, and the pouring assembly penetrates through the upper mold base and the upper mold core and is communicated with the cavity.

Compared with the prior art, the utility model has the beneficial effects that: according to the die ejection system, the straight push rod assembly is arranged to better push out the support shell, the stress is more uniform, meanwhile, the movable push rod is arranged, in the process of pushing out the support shell, the movable push rod is gradually far away from the inner side surface of the support shell, so that the convex part can be separated from the groove when the support shell is pushed out, and then the product can be taken out more conveniently and more efficiently.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments are briefly described below, and the drawings in the following description are only drawings corresponding to some embodiments of the present utility model.

Fig. 1 is a schematic structural view of an injection mold for a support shell according to the present utility model.

Fig. 2 is a schematic structural diagram of the injection mold for the support shell of the present utility model between the upper mold core and the lower mold core.

Fig. 3 is a schematic structural view of a bracket shell in the present utility model.

Fig. 4 is a top view of the lower core of the injection mold for the support shell of the present utility model.

Fig. 5 is a partial cross-sectional view of the bracket shell injection mold of the present utility model.

Fig. 6 is a schematic structural view of a movable push rod of the injection mold for the bracket shell of the present utility model.

Fig. 7 is a schematic structural view of a mold core of the injection mold for a support shell according to the present utility model.

Fig. 8 is a schematic structural view of a lower core of the injection mold for the support shell of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms of directions used in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are used for explaining and understanding the present utility model only with reference to the orientation of the drawings, and are not intended to limit the present utility model.

The words "first," "second," and the like in the terminology of the present utility model are used for descriptive purposes only and are not to be construed as indicating or implying relative importance and not as limiting the order of precedence.

In the present utility model, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

After the product is cooled and molded in the prior art, the injection mold is also used for directly pushing out the injection molded product by adopting two straight push rods, or three straight push rods distributed in a triangular manner or four straight push rods distributed in four corners, the ejection stress lacks pertinence, the defects of obvious stress marks (the stress marks are different from other places in color), crush injuries and the like of the local structure of the support shell are easily caused, and the product is still not convenient enough to take out after ejection, and the efficiency is low.

The following is a preferred embodiment of a mold ejection system that solves the above technical problems.

Referring to fig. 1-5, like elements are designated by like reference numerals.

The utility model provides a bracket shell injection mold which comprises an upper mold base 11, a lower mold base 12, an upper mold core 15, a lower mold core 16, a mold ejection system and a pouring assembly 14, wherein the upper mold core 15 and the lower mold core 16 are in butt joint, are positioned between the upper mold base 11 and the lower mold base 12, a cavity for injecting a bracket shell 17 is formed between the upper mold core 15 and the lower mold core 16, and the pouring assembly 14 penetrates through the upper mold base 11 and the upper mold core 15 and is communicated with the cavity.

The mold ejection system is used for ejecting a support shell 17 wrapped on the lower mold core 16, the support shell 17 is formed by injection molding and provided with an inner concave cavity, and the mold ejection system comprises a push plate 13, a connecting rod 1B, a movable push rod 18 and a straight push rod assembly.

Referring to fig. 5, one end of the straight push rod assembly is fixedly connected with the push plate 13, the other end is connected in the lower mold core 16 in a penetrating manner, one end of the connecting rod 1B is fixedly connected with the push plate 13, the other end is movably connected with the movable push rod 18, the movable push rod 18 is connected in the lower mold core 16 in a tilting manner in a penetrating manner, an inward protruding portion 173 is arranged on the inner side surface of the support shell 17, a groove 183 for forming the protruding portion 173 is arranged on the movable push rod 18, when the support shell 17 is wrapped on the lower mold core 16, the movable push rod 18 is simultaneously contacted with the inner top surface and the inner side surface of the support shell 17, when the support shell 17 is pushed away from the lower mold core 16, the movable push rod 18 is contacted with the inner top surface of the support shell 17, and the movable push rod 18 is separated from the inner side surface of the support shell 17 by a set distance.

The support shell 17 is better through setting up the straight push rod subassembly, and the atress is more even to be released, sets up movable push rod 18 simultaneously, and at release support shell 17 in-process, movable push rod 18 can keep away from the medial surface of support shell 17 gradually, and when support shell 17 was pushed out like this, convex part 173 can break away from with recess 183, later take out the product can be more convenient high-efficient.

As shown in fig. 1, the push plate 13 is composed of two plate bodies, so as to clamp and fix one end of the straight push rod assembly and the connecting rod 1B.

In this embodiment, the lower mold core 16 is provided with a receiving groove 161, two mold cores 19 are detachably disposed in the receiving groove 161, a cavity for injection molding the support shell 17 is formed between the mold cores 19 and the inner wall of the receiving groove 161, and a movable push rod 18 is penetrated between each mold core 19 and the lower mold core 16. Specifically, a cavity for injection molding the holder case 17 is formed between the upper portion of the mold core 19 and the inner wall of the receiving groove 161, and the lower portion of the mold core 19 is positioned in contact with the inner wall surface of the receiving groove 161 while the lower mold base 12 and the mold core 19 are connected by screws.

Referring to fig. 7 and 8, the mold core 19 is provided with a first positioning groove 191 for positioning connection with the movable push rod 18, and the inner wall of the accommodating groove 161 is provided with a second positioning groove 162 for positioning connection with the movable push rod 18.

Meanwhile, the first positioning groove 191 and the second positioning groove 162 extend obliquely in a direction approaching the center of the support shell 17, so that the sliding of the movable push rod 18 is oriented, and the stability of the pushing-out process of the support shell 17 is ensured.

Referring to fig. 6, in the present embodiment, two sides of a portion of the movable push rod 18 located in the lower mold core 16 are provided with an inclined surface 181 and a vertical surface 182, wherein the inclined surface 181 contacts with an inner surface of the first positioning groove 191, and the vertical surface is used for forming an inner surface of the cavity. Thus, the thickness of the part of the movable push rod 18 positioned in the lower die core 16 is gradually increased along the direction of the push plate 13 pointing to the upper die core 15, so that the inclined ejection of the support shell 17 is ensured, and the vertical inner surface of the support shell 17 can be formed.

Referring to fig. 4, in the present utility model, the straight push rod assembly includes a first straight push rod 1A1 and a second straight push rod 1A2, the bracket shell 17 includes an outer shell portion 171 and an inner shell portion 172, the inner shell portion 172 is connected in the outer shell portion 171 and forms an intersection portion, and both sides of the intersection portion are respectively provided with the first straight push rod 1A1 and the second straight push rod 1A2. The intersection strength is better, can bear the thrust of straight push rod subassembly more to like structure such as the equal correspondence of fig. 3 intersection department has screw spliced pole, first straight push rod 1A1 and second straight push rod 1A2 also can be better form thrust to structure such as screw spliced pole, and the while intersection atress is more convenient for take out support shell 17 from the die cavity between the inner wall of mold core 19 and holding tank 161, thereby is difficult for defects such as stress trace, crush injury.

Further, the first straight pushing rod 1A1 is a cylindrical rod, and is located at an angle between the inner shell portion 172 and the outer shell portion 171 of the first straight pushing rod 1A1, and is compact. The second straight pushing rod 1A2 is a rectangular rod, and the second straight pushing rod 1A2 is in surface contact with the surface of the inner shell 172, so that the rectangular rod is more beneficial to smoothly pushing out the support shell 17 by being abutted against the inner shell 172.

In this embodiment, two inner housing portions 172 are correspondingly formed around the two mold cores 19, and a third straight push rod 1A3 is further disposed at a housing plate of the two inner housing portions 172 away from the outer housing portion 171, where the third straight push rod 1A3 is a rectangular rod, so that the bracket housing 17 can be pushed out more smoothly.

In the present embodiment, the tilt angle of the movable push rod 18 is between 3 degrees and 6 degrees.

After the injection molding of the bracket shell injection mold is completed, after cooling and solidification, the upper mold seat 11 and the upper mold core 15 rise to open the mold, and then the push plate 13 pushes upwards, so that the straight push rod assembly and the movable push rod 18 gradually separate from the lower mold core 16 for pushing the injection molded bracket shell 17, the straight push rod assembly comprises a first straight push rod 1A1 and a second straight push rod 1A2 which are distributed aiming at the intersection part between the inner shell part 172 and the outer shell part 171, and the stress position is good, so that the bracket shell 17 is conveniently taken out from a cavity between the mold core 19 and the inner wall of the accommodating groove 161, and the defects such as stress marks, crush injuries and the like are not easy to occur. On the other hand, during the process of pushing out the support shell 17, the movable push rod 18 is gradually far away from the inner side surface of the support shell 17, so that the convex part 173 can be separated from the groove 183 when the support shell 17 is pushed out, and then the product can be taken out more conveniently and efficiently.

The mould ejection system of this preferred embodiment carries out better through setting up straight push rod subassembly to the support shell, and the atress is more even to be released, sets up movable push rod simultaneously, and at the release support shell in-process, movable push rod can keep away from the medial surface of support shell gradually, when the support shell is released like this, the convex part can break away from with the recess, later take out the product can be more convenient high-efficient.

In summary, although the present utility model has been described in terms of the preferred embodiments, the preferred embodiments are not limited to the above embodiments, and various modifications and changes can be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model is defined by the appended claims.

Claims

1. A mold ejection system for ejecting a carrier shell wrapped around a lower core, the carrier shell being injection molded and having an interior cavity, the mold ejection system comprising: the device comprises a push plate, a connecting rod, a movable push rod and a straight push rod assembly;

2. The mold ejection system of claim 1, wherein a receiving groove is formed in the lower mold core, two mold cores are detachably arranged in the receiving groove, a cavity for injection molding the support shell is formed between each mold core and the inner wall of the receiving groove, and the movable push rod penetrates through each mold core and the lower mold core;

3. The mold ejection system of claim 2, wherein the first detent and the second detent each extend obliquely in a direction toward a center of the holder housing.

4. The mold ejection system of claim 3, wherein the two sides of the portion of the movable ram located in the lower mold core are provided with an inclined surface and a vertical surface, the inclined surface is in contact with the inner surface of the first positioning groove, and the vertical surface is used for forming the inner surface of the cavity.

5. The mold ejection system of claim 2, wherein the straight pushrod assembly comprises a first straight pushrod and a second straight pushrod, the bracket shell comprises an outer shell portion and an inner shell portion, the inner shell portion is connected within the outer shell portion and forms an intersection, and both sides of the intersection are provided with the first straight pushrod and the second straight pushrod, respectively.

6. The mold ejection system of claim 5, wherein the first straight push rod is a cylindrical rod and is located at an angle between the inner shell portion and the outer shell portion, the second straight push rod is a rectangular rod, and the second straight push rod is in surface contact with a surface of the inner shell portion.

7. The mold ejection system of claim 5, wherein two inner shell portions are formed around the two mold cores, and a third straight push rod is further disposed at a position of the two inner shell portions away from the shell plate of the outer shell portion, and the third straight push rod is a rectangular rod.

8. The mold ejection system of claim 1, wherein the tilt angle of the movable ram is between 3 degrees and 6 degrees.

9. The mold ejection system of claim 2, wherein a cavity for injection molding the holder shell is formed between an upper portion of the mold core and an inner wall of the receiving groove, and a lower portion of the mold core is positioned in contact with an inner wall surface of the receiving groove.

10. The injection mold for the support shell is characterized by further comprising an upper mold base, a lower mold base, an upper mold core and a pouring assembly, wherein the upper mold core and the lower mold core are in butt joint, are positioned between the upper mold base and the lower mold base, a cavity for injecting the support shell is formed between the upper mold core and the lower mold core, and the pouring assembly penetrates through the upper mold base and the upper mold core and is communicated with the cavity.