CN213500634U - Mold delay ejection device and plastic mold - Google Patents
Mold delay ejection device and plastic mold Download PDFInfo
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- CN213500634U CN213500634U CN202022045321.7U CN202022045321U CN213500634U CN 213500634 U CN213500634 U CN 213500634U CN 202022045321 U CN202022045321 U CN 202022045321U CN 213500634 U CN213500634 U CN 213500634U
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- thimble
- mold
- delay
- ejector pin
- time delay
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Abstract
The utility model belongs to the technical field of the mould a mould time delay ejecting device and plastic mold, this mould time delay ejecting device, including thimble fixed plate and thimble board, the thimble board is installed on thimble fixed plate, install first thimble and second thimble on the thimble board, first thimble, the second thimble passes the thimble board, the thimble fixed plate is withstood to the rear end of first thimble, be equipped with the mounting hole on the thimble fixed plate, install the ejecting post of time delay in the mounting hole, it is equipped with the time delay interval to reserve in the mounting hole, after the thimble fixed plate promoted first thimble earlier and removed the distance that equals with the time delay interval, the thimble fixed plate promoted first thimble again and the ejecting post synchronous motion of time delay, the ejecting post of time delay promotes the second thimble and removes ejecting. The utility model has the advantages that: the first ejector pin and the second ejector pin are sequentially ejected to form a time difference, a force for forming anti-buckling deformation is formed in the time difference, the part, easy to buckle, of the plastic part is corrected, the buckling deformation degree is reduced, and the product quality and the production efficiency are improved.
Description
Technical Field
The utility model belongs to the technical field of the mould, especially, relate to a mould time delay ejecting device and plastic mold.
Background
In the production process of the plastic part, the plastic part is easy to warp and deform due to material shrinkage, particularly, the requirements on the quality of the interior and exterior trimming parts of some vehicles are high, and if the interior and exterior trimming parts of some vehicles deform, the subsequent assembly quality is affected. For example: the sundry box cover in the interior and exterior trimming parts of the vehicle is of a flat plate structure, if the problem of warping deformation exists, the problem that gaps between two ends of the sundry box cover and the sundry box are too large after the sundry box cover and the sundry box are assembled can be caused, and the appearance quality of a product is seriously affected, so that although the structure is simple, the requirement on the flatness of the surface of the product is high. In the current production process, the existing mold cannot overcome the buckling deformation of the plastic part, and only can correct the buckling deformation through subsequent manual work, so that the appearance quality of the product is ensured, the production efficiency is reduced, and the subsequent labor cost is increased.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide a mould time delay ejecting device and plastic mold for plastic part yielding warpage, product quality are poor, production efficiency hangs down the scheduling problem among the solution prior art.
In order to achieve the above and other related objects, the present invention provides a mold delayed ejection device, which comprises an ejector pin fixing plate and an ejector pin plate, the ejector pin plate is detachably arranged on the ejector pin fixing plate, a first ejector pin and a second ejector pin are arranged on the ejector pin plate, the front ends of the first ejector pin and the second ejector pin penetrate through the ejector pin plate, the rear end of the first thimble props against the thimble fixing plate, the thimble fixing plate is provided with a mounting hole, a delay ejection column with the front end propping against the rear end of the second thimble is arranged in the mounting hole, a delay interval for the delay ejection of the second thimble is reserved in the mounting hole, after the thimble fixing plate pushes the first thimble to move and eject for a distance equal to the delay interval, the ejector pin fixing plate pushes the first ejector pin to move synchronously with the delayed ejection column, and the delayed ejection column pushes the second ejector pin to move and eject.
The utility model has the advantages that: the first ejector pin and the second ejector pin are sequentially ejected to form a time difference, a force for forming anti-buckling deformation is formed in the time difference, the part, easy to buckle, of the plastic part is corrected, the buckling deformation degree is reduced, and the product quality and the production efficiency are improved.
Optionally, the mounting hole is a stepped hole, a large-diameter end of the stepped hole faces the second ejector pin, the delay ejector column is a stepped column, the large-diameter end of the stepped column is located in the large-diameter end of the stepped hole and abuts against the rear end of the second ejector pin, and a small-diameter end of the stepped column penetrates through the mounting hole.
Optionally, the distance between the end surface of the large-diameter end of the stepped column, which is far away from the delayed ejection column, and the end surface of the large-diameter end of the stepped hole is the delay distance.
Optionally, the delay interval is 2mm to 5 mm.
Optionally, the delay distance is 3 mm.
Optionally, the first ejector pins are distributed in the central area of the ejector pin plate and aligned with the central area of the plastic product; the second ejector pins are distributed on the edge area of the ejector pin plate and aligned to the edge area of the plastic product.
Optionally, the number of the second ejector pins is at least two, and the first ejector pin is located between the second ejector pins.
Optionally, the thimble fixing plate and the thimble plate are detachably connected by a screw.
The beneficial effect of adopting the above optional scheme is: simple structure, easy dismounting, the commonality is strong, is convenient for change the thimble that corresponds according to different products, realizes that the warpage of product is corrected and is ejecting.
The utility model provides a plastic mold, includes as above mould time delay ejecting device, still includes movable mould bottom plate and cover half, be equipped with the movable mould between movable mould bottom plate and the cover half, mould time delay ejecting device is located between movable mould bottom plate and the movable mould, the movable mould is passed to the front end of first thimble, second thimble, and during initial condition, the rear end of time delay ejection post passes thimble fixed plate and withstands the movable mould bottom plate.
Optionally, the ejector pin mechanism further comprises an equipment ejection column and a return spring for driving the ejector pin plate to eject and reset, wherein the equipment ejection column penetrates through the movable mold bottom plate to push the ejector pin fixing plate to move so as to drive the ejector pin plate to eject.
The utility model has the advantages that: the problem of after the plastics product takes out the mould, lead to product warpage deformation because of the material shrink is solved, directly break away from at present at the product and just correct completely, need not follow-up manual correction, improved production efficiency, the cost is reduced.
Drawings
Fig. 1 is a schematic structural view of the mold delay ejection device located at the initial position after the plastic mold is opened;
FIG. 2 is an enlarged schematic view of detail A of FIG. 1;
fig. 3 is a partial schematic view of the mold delayed ejection device in the ejection process after the plastic mold is opened according to the present invention;
fig. 4 is a schematic view of the stress of the plastic product in the operation process of the mold delay ejection device of the present invention;
fig. 5 is a schematic structural view of the plastic mold of the present invention when closing the mold.
Description of reference numerals
1, a thimble fixing plate;
11 mounting holes;
2, ejecting a needle plate;
21 a first thimble;
22 a second thimble;
3 moving the die base plate;
4, moving a mold;
5, fixing the mold;
6, delaying to eject the column;
7 plastic product.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the terms "upper", "lower", "left", "right", "middle" and "one" used herein are for clarity of description, and are not intended to limit the scope of the invention, but rather the scope of the invention.
As shown in fig. 1 to 5, the utility model discloses a mould time delay ejecting device, including thimble fixing plate 1 and thimble board 2, thimble board 2 detachably installs on thimble fixing plate 1, installs first thimble 21 and second thimble 22 on thimble board 2, and the front end of first thimble 21, second thimble 22 all passes thimble board 2, and the rear end of first thimble 21 withstands thimble fixing plate 1 to thimble fixing plate 1 removes and just can promote first thimble 22 and remove. The thimble fixing plate 1 is provided with a mounting hole 11, a delay ejection column 6 is mounted in the mounting hole 11, the front end of the delay ejection column 6 abuts against the rear end of the second thimble 22, a delay interval for the delay ejection of the second thimble 22 is reserved in the mounting hole 11, when the thimble fixing plate 1 firstly pushes the first thimble 21 to move and eject by a distance equal to the delay interval, the thimble fixing plate 1 then pushes the first thimble 21 and the delay ejection column 6 to move synchronously, and the delay ejection column 6 pushes the second thimble 22 to move and eject. The first thimble 21 and the second thimble 22 are ejected out successively, so that the plastic product is subjected to a torsion force opposite to the buckling deformation force, the plastic product is corrected, the buckling deformation degree is improved, and the product quality is improved.
As shown in fig. 1 to 4, in an exemplary embodiment, the mounting hole 11 may be a stepped hole with a large diameter end facing the second thimble 22, the delayed ejection column 6 may be a stepped column with a large diameter end located inside the large diameter end of the stepped hole and a small diameter end passing through the mounting hole 11, and the large diameter end of the stepped column abuts against the rear end of the second thimble 22. The distance D between the end face, away from the delay ejection column, of the large-diameter end of the stepped column and the end face of the large-diameter end of the stepped hole is a delay distance, the delay distance can be 2-5 mm, in the embodiment, the delay distance is 3mm, namely after the first ejector pin 21 moves and ejects 3mm, the second ejector pin 22 and the first ejector pin 21 move and eject together, so that the local part of the plastic product 7 is stressed first, and the other part continues to be left in the mold, so that an acting force in the direction opposite to the buckling deformation is formed, the buckling deformation of the plastic product is slowed down, the correction of the plastic product is realized, and the product quality is improved. The ejector pin fixing plate 1 and the ejector pin plate 2 can be detachably connected through screws, detachable connection is adopted, and the arrangement structure of the delay ejection columns 6, the ejector pin fixing plate 1, the ejector pin plate 2, the first ejector pins 21 and the second ejector pins 22 is matched, so that the processing is simple, the installation is convenient, the occupied space is small, the arrangement is convenient, the delay ejection columns 6 with different heights can be conveniently replaced according to the requirements of different delay ejection intervals, the cost is low, and the economic benefit is high.
As shown in fig. 1 to 5, in an exemplary embodiment, the first needles 21 are distributed in a central area of the needle plate 2 and are aligned with a central area of the plastic product; the second needles 22 are distributed in the edge region of the needle plate 2 and are aligned with the edge region of the plastic product. The number of the second ejector pins 22 is at least two, the number and the arrangement positions of the second ejector pins 22 and the first ejector pins can be selected according to requirements, the first ejector pins 21 are located between the second ejector pins 22, the edge area of the plastic product subjected to buckling deformation can be matched with the central area of the plastic product to resist the buckling deformation force by adopting the structural layout, and the quality of the plastic product is improved.
As shown in fig. 1 to 5, the utility model discloses a plastic mold, including mould time delay ejecting device in as above arbitrary exemplary embodiment, still include movable mould bottom plate 3, cover half 5, the ejecting post of equipment and the ejecting reset spring who resets of drive thimble board 2, be equipped with movable mould 4 between movable mould bottom plate 3 and the cover half 5, mould time delay ejecting device is located between movable mould bottom plate 3 and the movable mould 4, movable mould 4 is passed to first thimble 21, the front end of second thimble 22, during initial condition, the rear end of time delay ejecting post 6 passes thimble fixed plate 1 and withstands movable mould bottom plate 3. The equipment ejection column penetrates through the movable mold bottom plate 3 to push the ejector pin fixing plate 1 to move so as to drive the ejector pin plate 2 to eject, the ejector pin plate 2 firstly pushes the first ejector pin 21 to move so as to eject, when the ejector pin fixing plate 1 and the ejector pin plate 2 move together for a distance D, the end face of the large-diameter end in the mounting hole 11 is abutted to the end face of the large-diameter end of the delay ejection column 6, the ejector pin fixing plate 1 continues to move so as to drive the first ejector pin 21 and the second ejector pin 22 to move together so as to eject, the plastic product 7 is separated from the movable mold 4, and the.
The working process is as follows: after the plastic product is molded, after the mold is opened in place, the ejection column of the equipment starts to eject, the ejector pin fixing plate and the ejector pin plate start to move under the action of the ejection column of the equipment, the first ejector pin starts to eject forwards, at the moment, the plastic product in the region of the ejector force action of the first thimble begins to be separated from the movable mould, the second thimble cannot be ejected forwards due to the action force of the thimble fixing plate at the stage, at the moment, the product in the second thimble action area is continuously left on the movable die, and in the stage, most of the plastic product is separated from the movable die under the action of the first thimble, and part of the plastic product is continuously left on the movable die without being acted by the second thimble. After the ejector plate and the ejector pin fixing plate move for a distance D under the action of the ejection column of the equipment, at the moment, the upper surface of the delay ejection column is contacted with the rear end face of the second ejector pin, and the second ejector pin is ejected forwards under the action of the delay ejection column, so that the second ejector pin and the first ejector pin push the plastic product forwards. After the ejector plate is ejected to a set position, ejection is finished, the manipulator starts to take a workpiece, after the manipulator finishes taking the workpiece, the ejection column of the equipment returns, the ejector plate returns in place under the action of the reset spring, at the moment, the second ejector pin is supported by the delay ejection column to be consistent with the peripheral molded surface, the second ejector pin is prevented from retreating due to pressure in the injection process, and therefore the shape of the second ejector pin is guaranteed to be flat after the product is molded.
The utility model discloses a mould time delay ejecting device and plastic mold have solved the plastic product and after taking out the mould, lead to the problem of product warpage deformation because of the material shrink, need not to correct the plastic product through subsequent artifical correction process again, have guaranteed product quality, have improved production efficiency, have reduced the cost of labor. Meanwhile, the mold delay ejection device is simple in structure, high in universality and convenient to manufacture and popularize.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a mould time delay ejecting device which characterized in that: including thimble fixed plate and thimble board, thimble board detachably installs on thimble fixed plate, install first thimble and second thimble on the thimble board, the thimble board is all passed to the front end of first thimble, second thimble, and the rear end of first thimble withstands thimble fixed plate, be equipped with the mounting hole on the thimble fixed plate, install the time delay ejection post that the front end withstood second thimble rear end in the mounting hole, it is equipped with the ejecting time delay interval that is used for the time delay of second thimble to reserve in the mounting hole, work as the thimble fixed plate promotes first thimble earlier and removes after the distance that equals with time delay interval, the thimble fixed plate promotes first thimble and the ejecting synchronous motion of time delay ejection post again, the ejecting post that delays promotes the second thimble and removes ejecting.
2. The mold delay ejector apparatus of claim 1, wherein: the mounting hole is a stepped hole, the large-diameter end of the stepped hole faces the second ejector pin, the delay ejection column is a stepped column, the large-diameter end of the stepped column is located in the large-diameter end of the stepped hole and abuts against the rear end of the second ejector pin, and the small-diameter end of the stepped column penetrates through the mounting hole.
3. The mold delay ejector apparatus of claim 2, wherein: the distance between the end face, far away from the delay ejection column, of the large-diameter end of the stepped column and the end face of the large-diameter end of the stepped hole is the delay distance.
4. The mold delay ejector apparatus of claim 1, wherein: the delay interval is 2 mm-5 mm.
5. The mold delayed ejection device of claim 4, wherein: the delay interval is 3 mm.
6. The mold delay ejector apparatus of claim 1, wherein: the first thimbles are distributed in the central area of the thimble plate and are aligned with the central area of the plastic product; the second ejector pins are distributed on the edge area of the ejector pin plate and aligned to the edge area of the plastic product.
7. The mold delay ejector apparatus of claim 1, wherein: the number of the second thimbles is at least two, and the first thimbles are located between the second thimbles.
8. The mold delayed ejection device of claim 7, wherein: the ejector pin fixing plate is detachably connected with the ejector pin plate through screws.
9. A plastic mold comprising the mold delay ejector apparatus as set forth in any one of claims 1 to 8, wherein: still include movable mould bottom plate and cover half, be equipped with the movable mould between movable mould bottom plate and the cover half, mould time delay ejecting device is located between movable mould bottom plate and the movable mould, the movable mould is passed to the front end of first thimble, second thimble, and during initial condition, the rear end of time delay ejection post passes the thimble fixed plate and withstands the movable mould bottom plate.
10. A plastic mold as recited in claim 9, wherein: the ejector pin plate ejection mechanism is characterized by further comprising an equipment ejection column and a reset spring for driving the ejector pin plate to eject and reset, wherein the equipment ejection column penetrates through the movable mold bottom plate to push the ejector pin fixing plate to move so as to drive the ejector pin plate to eject.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022045321.7U CN213500634U (en) | 2020-09-17 | 2020-09-17 | Mold delay ejection device and plastic mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022045321.7U CN213500634U (en) | 2020-09-17 | 2020-09-17 | Mold delay ejection device and plastic mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213500634U true CN213500634U (en) | 2021-06-22 |
Family
ID=76447739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022045321.7U Active CN213500634U (en) | 2020-09-17 | 2020-09-17 | Mold delay ejection device and plastic mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213500634U (en) |
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2020
- 2020-09-17 CN CN202022045321.7U patent/CN213500634U/en active Active
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