CN214725669U - Core pulling device - Google Patents
Core pulling device Download PDFInfo
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- CN214725669U CN214725669U CN202022876346.1U CN202022876346U CN214725669U CN 214725669 U CN214725669 U CN 214725669U CN 202022876346 U CN202022876346 U CN 202022876346U CN 214725669 U CN214725669 U CN 214725669U
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- mounting hole
- die
- fixed
- core
- core pulling
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Abstract
The utility model discloses a core pulling device, which comprises a movable mould frame, a fixed mould frame, a movable mould and a fixed mould, wherein the outer side surface of the fixed mould frame is provided with a first mounting hole; a die cavity is formed at the joint of the fixed die and the movable die when the fixed die and the movable die are assembled; a second mounting hole is formed in the position, corresponding to the first mounting hole, of the fixed die; the second mounting hole penetrates through the fixed die and is communicated with the die cavity; the first mounting hole and the second mounting hole are obliquely arranged relative to the fixed die frame and the fixed die; and a detachable core pulling device is embedded in a cavity formed by the first mounting hole and the second mounting hole. The utility model has the advantages that the installation holes are arranged on the fixed die frame and the fixed die, and the core pulling device is embedded into the fixed die frame and the fixed die through the installation holes, so that the space occupied by core pulling is greatly reduced, die changing feet and thimbles are avoided, and the die repairing cost is reduced; in addition, the core pulling device is arranged in an independent detachable structure, the whole die does not need to be disassembled during maintenance and disassembly, and the core pulling device can be taken out only by disassembling the fixed block, so that the core pulling device is convenient to install and disassemble.
Description
Technical Field
The utility model relates to the technical field of mold, especially, relate to a device of loosing core.
Background
In the prior art, part of the threaded holes of the automobile parts are machined and formed through a post-process; but because the average wall thickness of the automobile parts is thin, the wall thickness of the threaded hole is relatively thick, and the uneven wall thickness causes shrinkage cavities and air holes, when the threaded hole is machined, holes with the diameter being more than or equal to phi 7.5 are formed in the hole, and the reject ratio is about 10 percent;
in order to solve the problems, in the prior art, an oil cylinder support, a travel switch fixing plate and the like are added in a matched manner, so that the occupied space is large, and the space between a die frame and an ejector plate is not enough, so that die feet must be heightened, an ejector pin is omitted, the die change cost is high, and the disassembly and the assembly are not convenient.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a core pulling device, which is characterized in that mounting holes are formed on a fixed die frame and a fixed die, and the core pulling device consisting of an oil cylinder and a core pulling assembly is embedded into the fixed die frame and the fixed die through the mounting holes, so that the space occupied by core pulling is greatly reduced, die changing feet and ejector pins are avoided, and the die repairing cost is reduced; in addition, the core pulling device is arranged in an independent detachable structure, the whole die does not need to be disassembled during maintenance and disassembly, the core pulling device can be taken out only by disassembling the fixed block, the core pulling device is convenient to install and disassemble, and the workload is reduced.
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
a core pulling device comprises a movable mould frame (1), a fixed mould frame (2), a movable mould (3) embedded in the movable mould frame (1) and a fixed mould (4) embedded in the fixed mould frame (2), and is characterized in that a first mounting hole (21) is formed in the outer side surface of the fixed mould frame (2); the first mounting hole (21) penetrates from the outer side surface to the inner side surface of the fixed mold frame (2);
a die cavity (9) is formed at the joint of the fixed die (4) and the movable die (3) when the fixed die and the movable die are assembled; a second mounting hole (41) is formed in the position, corresponding to the first mounting hole (21), of the fixed die (4); the second mounting hole (41) penetrates through the fixed die (4) and is communicated with the die cavity (9); the first mounting hole (21) and the second mounting hole (41) are coaxially arranged; the first mounting hole (21) and the second mounting hole (41) are obliquely arranged relative to the fixed die frame (2) and the fixed die (4);
and a detachable core-pulling device (5) is embedded in a cavity formed by the first mounting hole (21) and the second mounting hole (41).
Preferably, the core-pulling device (5) comprises a core-pulling assembly (51) and an oil cylinder (52); the output end of the oil cylinder (52) is provided with a piston rod (6); the core-pulling assembly (51) is connected with the piston rod (6).
Preferably, the first mounting hole (21) is of a counter bore structure, and the first mounting hole comprises a first counter bore (211) and a first through hole (212) in sequence in the direction close to the die cavity; the second mounting hole (41) is of a stepped hole structure, and comprises a second counter bore (411), a third counter bore (412) and a second through hole (413) in sequence in the direction close to the die cavity (9); the inner diameters of the first through hole (212) and the second counter bore (411) are the same.
Preferably, the core back assembly (51) comprises a core back core (511) and a connecting piece (512) which are coaxially arranged; the core-pulling core (511) is arranged in the second through hole (413); the connecting piece (512) is arranged in the third counter bore (412); one end of the connecting piece (512) is connected with the core-pulling core (511), and the other end of the connecting piece is connected with the piston rod (6); the oil cylinder (52) is arranged in the first through hole (212) and the second counter bore (411).
Preferably, a fixed block (7) is arranged in the first counter bore (211); the fixed block (7) is connected with the bottom surface of the countersunk head of the first countersunk hole (211) through a screw.
Preferably, a limit sensor (8) is arranged on the countersunk bottom surface of the third counterbore (412); and the limit sensor (8) is electrically connected with the oil cylinder (52).
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a through set up the mounting hole on cover half frame and cover half, inlay the device of loosing core that will be formed by hydro-cylinder and subassembly of loosing core into cover half frame and cover half through the mounting hole to greatly reduce the space that the loosing core took, avoid retooling foot and thimble, reduce the cost of repairing the mould; in addition, the core pulling device is arranged in an independent detachable structure, the whole die does not need to be disassembled during maintenance and disassembly, the core pulling device can be taken out only by disassembling the fixed block, the core pulling device is convenient to install and disassemble, and the workload is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the core pulling device of the present invention;
wherein: the core pulling device comprises a movable mould frame 1, a fixed mould frame 2, a movable mould 3, a fixed mould 4, a core pulling device 5, a piston rod 6, a fixed block 7, a limit sensor 8, a mould cavity 9, a first mounting hole 21, a second mounting hole 41, a core pulling component 51, an oil cylinder 52, a first counter bore 211, a first through hole 212, a second counter bore 411, a third counter bore 412, a second through hole 413, a core pulling core 511 and a connecting piece 512.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention will be further described with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1 and 2, a core pulling device comprises a movable mold frame 1, a fixed mold frame 2, a movable mold 3 embedded in the movable mold frame 1, and a fixed mold 4 embedded in the fixed mold frame 2, wherein a first mounting hole 21 is formed in the outer side surface of the fixed mold frame 2; the first mounting hole 21 penetrates from the outer side surface to the inner side surface of the fixed mold frame 2.
A die cavity 9 is formed at the joint of the fixed die 4 and the movable die 3 when the fixed die and the movable die are assembled; a second mounting hole 41 is formed in the position, corresponding to the first mounting hole 21, of the fixed die 4; the second mounting hole 41 penetrates through the fixed die 4 and is communicated with the die cavity 9; the first mounting hole 21 and the second mounting hole 41 are coaxially arranged; the first mounting hole 21 and the second mounting hole 41 are obliquely arranged relative to the fixed mold frame 2 and the fixed mold 4.
A detachable core-pulling device 5 is embedded in a cavity formed by the first mounting hole 21 and the second mounting hole 41.
Further, as shown in fig. 2, the core pulling device 5 includes a core pulling assembly 51 and an oil cylinder 52; the output end of the oil cylinder 52 is provided with a piston rod 6; the core-pulling assembly 51 is connected with the piston rod 6.
Further, as shown in fig. 1, the first mounting hole 21 is a counterbore structure, and includes a first counterbore 211 and a first through hole 212 in sequence in a direction close to the mold cavity; the second mounting hole 41 has a stepped hole structure, and comprises a second counter bore 411, a third counter bore 412 and a second through hole 413 in sequence in a direction close to the mold cavity 9; the inner diameters of the first through hole 212 and the second counter bore 411 are the same; in this embodiment, the first mounting hole 21 of the countersunk structure and the second mounting hole 41 of the stepped structure are provided to accommodate the insertion of the core back device 5, and at the same time, the core back device 5 can be stably and firmly inserted.
Further, the core pulling assembly 51 comprises a core pulling core 511 and a connecting piece 512 which are coaxially arranged; the core-pulling core 511 is arranged in the second through hole 413; the connector 512 is disposed in the third counterbore 412; one end of the connecting piece 512 is connected with the core-pulling core 511, and the other end is connected with the piston rod 6; the cylinder 52 is disposed in the first through hole 212 and the second counterbore 411.
Further, a fixed block 7 is arranged in the first counter bore 211; the fixed block 7 is connected with the bottom surface of the countersunk head of the first counter bore 211 through a screw; the fixed block 7 is used for fixing the core-pulling device 5 embedded in the first mounting hole 21 and the second mounting hole 41; meanwhile, the core pulling device 5 is convenient to detach and install from the die, the working efficiency is improved, and the workload is reduced.
Further, a limit sensor 8 is arranged on the bottom surface of the countersunk head of the third countersunk hole 412; the limit sensor 8 is electrically connected with the oil cylinder 52; the limit sensor 8 is used for controlling the oil cylinder 52, limiting the maximum push-out position of the core-pulling core 511 and ensuring the core-pulling precision.
The working principle is as follows: embedding and installing the core pulling device 5 in a cavity formed by the first installation hole 21 and the second installation hole 41; when a product is produced, the fixed die 4 and the movable die 3 are matched, then the oil cylinder 52 is started, the piston rod 6 is pushed to drive the core pulling assembly 51 to extend out of the second through hole 413 into the die cavity 9 until the connecting piece 512 is contacted with the limit sensor 8 (at the time, the core pulling maximum push-out position is adopted), and then the product is injected.
According to the core pulling device, the fixed die frame 2 and the fixed die 4 are provided with the mounting holes, and the core pulling device 5 consisting of the oil cylinder 52 and the core pulling assembly 51 is embedded into the fixed die frame 2 and the fixed die 4 through the mounting holes, so that the space occupied by core pulling is greatly reduced, die feet and ejector pins are prevented from being changed, and the die repairing cost is reduced; in addition, the core pulling device 5 is arranged in an independent detachable structure, the whole die does not need to be disassembled during maintenance and disassembly, the core pulling device can be taken out only by disassembling the fixed block, the core pulling device is convenient to install and disassemble, and the workload is reduced.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the present invention.
Claims (6)
1. A core pulling device comprises a movable mould frame (1), a fixed mould frame (2), a movable mould (3) embedded in the movable mould frame (1) and a fixed mould (4) embedded in the fixed mould frame (2), and is characterized in that a first mounting hole (21) is formed in the outer side surface of the fixed mould frame (2); the first mounting hole (21) penetrates from the outer side surface to the inner side surface of the fixed mold frame (2);
a die cavity (9) is formed at the joint of the fixed die (4) and the movable die (3) when the fixed die and the movable die are assembled; a second mounting hole (41) is formed in the position, corresponding to the first mounting hole (21), of the fixed die (4); the second mounting hole (41) penetrates through the fixed die (4) and is communicated with the die cavity (9); the first mounting hole (21) and the second mounting hole (41) are coaxially arranged; the first mounting hole (21) and the second mounting hole (41) are obliquely arranged relative to the fixed die frame (2) and the fixed die (4);
and a detachable core-pulling device (5) is embedded in a cavity formed by the first mounting hole (21) and the second mounting hole (41).
2. Core pulling device according to claim 1, characterized in that the core pulling device (5) comprises a core pulling assembly (51) and an oil cylinder (52); the output end of the oil cylinder (52) is provided with a piston rod (6); the core-pulling assembly (51) is connected with the piston rod (6).
3. The core pulling device according to claim 1, wherein the first mounting hole (21) is a counter bore structure and comprises a first counter bore (211) and a first through hole (212) in sequence in a direction close to the mold cavity; the second mounting hole (41) is of a stepped hole structure, and comprises a second counter bore (411), a third counter bore (412) and a second through hole (413) in sequence in the direction close to the die cavity (9); the inner diameters of the first through hole (212) and the second counter bore (411) are the same.
4. A core pulling device according to claim 2, characterized in that the core pulling assembly (51) comprises a core pulling core (511) and a connecting piece (512) which are coaxially arranged; the core-pulling core (511) is arranged in the second through hole (413); the connecting piece (512) is arranged in the third counter bore (412); one end of the connecting piece (512) is connected with the core-pulling core (511), and the other end of the connecting piece is connected with the piston rod (6); the oil cylinder (52) is arranged in the first through hole (212) and the second counter bore (411).
5. A core pulling device according to claim 3, characterized in that a fixed block (7) is arranged in the first counter bore (211); the fixed block (7) is connected with the bottom surface of the countersunk head of the first countersunk hole (211) through a screw.
6. A core pulling device according to claim 3, characterized in that a limit sensor (8) is arranged on the countersunk bottom surface of the third counterbore (412); and the limit sensor (8) is electrically connected with the oil cylinder (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022876346.1U CN214725669U (en) | 2020-12-02 | 2020-12-02 | Core pulling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022876346.1U CN214725669U (en) | 2020-12-02 | 2020-12-02 | Core pulling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214725669U true CN214725669U (en) | 2021-11-16 |
Family
ID=78619112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022876346.1U Active CN214725669U (en) | 2020-12-02 | 2020-12-02 | Core pulling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214725669U (en) |
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2020
- 2020-12-02 CN CN202022876346.1U patent/CN214725669U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A core pulling device Effective date of registration: 20220524 Granted publication date: 20211116 Pledgee: Zhaoqing Rural Commercial Bank Co.,Ltd. Gaoyao sub branch Pledgor: GUANGDONG HONGTAI TECHNOLOGY (HOLDING) Co.,Ltd. Registration number: Y2022980006294 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |