CN210161543U - Secondary ejection injection mold - Google Patents
Secondary ejection injection mold Download PDFInfo
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- CN210161543U CN210161543U CN201921002833.6U CN201921002833U CN210161543U CN 210161543 U CN210161543 U CN 210161543U CN 201921002833 U CN201921002833 U CN 201921002833U CN 210161543 U CN210161543 U CN 210161543U
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Abstract
The utility model provides an ejecting injection mold of secondary belongs to mould technical field. The injection mold solves the technical problem that the existing injection mold with secondary ejection demolding cannot meet the requirement of valve cover demolding. This ejecting injection mold of secondary, including fixed die plate, movable mould board, thimble board and be used for controlling the initial roof of initial separation work piece, the bottom of movable mould board has set firmly two backup pads that are parallel to each other, initial roof is located two between the backup pad, the inboard of two backup pads all has the step face, initial roof the bottom surface can with the step face is spacing to support and leans on, should be initial roof be located between movable mould board and the thimble board and should be initial roof the upper and lower both sides respectively with movable mould board and thimble board looks interval. The utility model provides the high suitability to the production of valve gap work piece.
Description
Technical Field
The utility model belongs to the technical field of the mould, a ejecting injection mold of secondary is related to.
Background
The injection mold is a tool for producing plastic products, generally comprises a movable mold and a fixed mold, wherein the movable mold and the fixed mold are closed to form a runner system and a cavity of the plastic products during injection molding. During injection molding, the mold is clamped on an injection molding machine, molten plastic is injected into the cavity and is cooled and molded in the cavity, meanwhile, the molten plastic is also cooled in the runner system to form runner system condensate, the movable mold and the fixed mold are separated after the plastic product is molded, the plastic product is ejected out of the cavity through the ejection system and leaves the mold, finally, the movable mold and the fixed mold are closed again to carry out next injection molding, and the whole injection molding process is carried out circularly.
Chinese patent No. CN208232256U discloses an injection mold with secondary ejection and demolding, which sequentially comprises a movable mold plate, a first push plate, a second push plate and a fixed mold plate, wherein the first push plate is provided with a pull rod, the fixed mold plate is provided with a positioning seat, and the second push plate is provided with a return spring and a stop block; the stop block falls into the hook groove of the pull rod, and an oblique flange is arranged on the positioning seat; after the movable template is opened upwards, the first push plate drives the second push plate to move upwards through the pull rod to realize one-time ejection and demolding; the inclined flange presses the stop block downwards, the pull rod is separated from the stop block, and the first push plate continues to move upwards to realize secondary ejection and demolding.
The mold structure can realize twice ejection and demolding, but still has some defects: for valve cover workpieces with internal buckles and vertical clamping jaws, the die structure cannot meet the demolding requirement.
Disclosure of Invention
The utility model discloses to the above-mentioned problem that prior art exists, provide an ejecting injection mold of secondary, the utility model aims to solve the technical problem that: how to improve the applicability to valve deck workpieces.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides an ejecting injection mold of secondary, includes fixed die plate, movable mould board, thimble board and is used for controlling the initial roof of initial separation work piece, its characterized in that, the bottom of movable mould board has set firmly two backup pads that are parallel to each other, initial roof is located two between the backup pad, the inboard of two backup pads all has the step face, initial roof the bottom surface can with the step face is spacing to support and leans on, and this initial roof is located between movable mould board and the thimble board and should initial roof the upper and lower both sides respectively with movable mould board and thimble board looks interval.
A cavity for forming the valve cover is formed between the fixed die plate and the movable die plate, the ejector plate can move upwards relative to the movable die plate, so that a formed valve cover workpiece is ejected out through the ejector rod arranged on the ejector plate, and the initial ejector plate is used for preliminarily separating the workpiece from the forming insert before the ejector plate works. The bottom through at the movable mould board sets up parallel backup pad, make the initial roof support and lean on to set up on the step face of two backup pad inboards, initial roof can be unsettled remain stable between movable mould board and thimble board like this, initial roof during operation can move certain displacement towards the movable mould board and tentatively jack-up the valve gap work piece through the ejector pin on it, realize the space of valve gap work piece periphery and step down, and the inboard of valve gap still cooperates with the ejector pin joint on the initial roof, then the thimble board moves towards the movable mould board, because ejector pin board and initial roof interval arrangement, therefore the ejector pin on the final thimble board must surpass the ejector pin on the initial roof, and the valve gap work piece has sufficient deformation space, thereby can be ejecting the valve gap work piece of the ejector pin of joint on initial roof and drop and guarantee that the valve gap can not appear the liftout phenomenon, improve the.
In the secondary ejection injection mold, the outer peripheral surface of the ejector plate is provided with a sliding groove which is formed outwards, a movable block with an outward sliding trend is arranged in the sliding groove, a vertical and downward extending drag hook is arranged on the fixed die plate, and the drag hook can be abutted against the bottom surface of the movable block to be matched and drive the ejector plate to move upwards. Through set up vertical extension on the fixed die plate and can drive the drag hook of initial roof upward movement through the movable block that sets up on initial roof, the fixed die plate just can begin to drive initial fixed plate motion work to the assigned position when the mould die sinking like this, and work links up and has removed the driving system of control initial roof action from, practices thrift the cost and improves work efficiency.
In the secondary ejection injection mold, the movable mold plate is fixedly provided with a guide block which can be abutted against the movable block along the vertical direction and enables the movable block to retract into the chute, the movable block is provided with a strip-shaped groove extending along the sliding direction, the top plate is provided with an anti-falling pin, and the anti-falling pin is inserted into the strip-shaped groove. The movable template is provided with the guide block which can vertically abut against the movable block and can enable the movable block to retract into the sliding chute, so that the drag hook can continuously ensure enough die sinking stroke upwards after driving the primary top plate to complete work, and the workpiece taking and maintenance operation are facilitated; through set up the cooperation of strip-shaped groove on anticreep round pin and the movable block on the roof just, the anticreep round pin can avoid the movable block to deviate from the spout when losing the drag hook restriction when guaranteeing that the movable block normally slides along the spout like this, guarantees that the mould normally works.
In the above-mentioned secondary ejection injection mold, the injection mold further comprises a bottom plate, the bottom plate is located below the ejector plate, a plurality of stand columns are fixedly arranged on the surface of the bottom plate, and the stand columns penetrate through the ejector plate and can be abutted against the bottom of the primary ejector plate. Through set up a plurality of stand that run through the thimble board and lean on with first roof on the surface at the bottom plate, the stand can effectively support the unsettled part of first roof like this, avoids first roof atress inhomogeneous and take place to warp.
In the secondary ejection injection mold, the upper surface of the primary ejection plate and the upper surface of the ejector plate are respectively and fixedly provided with the buffer column. Through the even event setting buffer column in the upper surface of first roof and the upper surface of thimble board, can reduce the impact between first roof and movable mould board and thimble board and the first roof like this, improve structural stability.
Compared with the prior art, the utility model has the advantages as follows:
1. the secondary ejection injection mold enables the primary ejection plate to be abutted against the step surfaces on the inner sides of the two supporting plates by arranging the parallel supporting plates at the bottom of the movable mold plate, thus, the initial top plate can be suspended between the movable template and the ejector plate to be kept stable, the initial top plate can move towards the movable template for a certain displacement during working and can initially jack up the valve cover workpiece through the ejector rod on the initial top plate, the space abdication of the periphery of the valve cover workpiece is realized, the inner side of the valve cover is still in clamping fit with the ejector rod on the primary top plate, then the ejector plate moves towards the movable template, because the ejector pin plate and the initial ejector plate are arranged at intervals, the ejector pin on the final ejector pin plate inevitably exceeds the ejector pin on the initial ejector plate, and the valve cover workpiece has enough deformation space, thereby can be ejecting the valve gap work piece that drops and guarantee the valve gap and can not appear pushing up white phenomenon with the valve gap work piece of the ejector pin joint on the first roof, improve the suitability to the valve gap work piece.
2. This ejecting injection mold of secondary is through setting up the cooperation of strip shape groove on anticreep round pin and the movable block on the primary roof board, and the anticreep round pin can avoid the movable block to deviate from the spout when losing the drag hook restriction when guaranteeing that the movable block normally slides along the spout like this, guarantees that the mould normally works.
Drawings
Fig. 1 is a schematic perspective view of the double-ejection injection mold.
Fig. 2 is a schematic sectional structure view of the double-ejection injection mold.
FIG. 3 is a schematic cross-sectional view of the double-ejection injection mold at another angle.
Fig. 4 is a perspective view of the movable block.
In the figure, 1, a fixed template; 11. pulling a hook;
2. moving the template; 21. a guide block;
3. an ejector plate;
4. a primary top plate; 41. a chute; 42. the anti-drop pin;
5. a support plate; 51. a step surface;
6. a movable block; 61. a strip-shaped groove;
7. a base plate; 8. a column; 9. and (7) buffering the column.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1-3, the secondary ejection injection mold comprises a fixed mold plate 1, a movable mold plate 2, an ejector plate 3 and a primary ejection plate 4 for controlling the primary separation of workpieces, wherein two support plates 5 arranged in parallel are fixedly arranged at the bottom of the movable mold plate 2, the primary ejection plate 4 is positioned between the two support plates 5, step surfaces 51 are arranged on the inner sides of the two support plates 5, the bottom surface of the primary ejection plate 4 can be limited and abutted against the step surfaces 51, and the primary ejection plate 4 is positioned between the movable mold plate 2 and the ejector plate 3, and the upper side and the lower side of the primary ejection plate 4 are respectively spaced from the movable mold plate 2 and the ejector plate. A cavity for forming the valve cover is formed between the fixed die plate 1 and the movable die plate 2, the ejector plate 3 can move upwards relative to the movable die plate 2, so that a formed valve cover workpiece is ejected out through an ejector rod arranged on the ejector plate 3, and the primary ejection plate 4 is used for preliminarily separating the workpiece from a forming insert before the ejector plate 3 works. By arranging the parallel supporting plates 5 at the bottom of the movable template 2, the initial top plate 4 is abutted against the step surfaces 51 arranged at the inner sides of the two supporting plates 5, thus, the primary top plate 4 can be suspended between the movable template 2 and the ejector plate 3 to be kept stable, the primary top plate 4 can move towards the movable template 2 for a certain displacement during working and can initially jack up the valve cover workpiece through the ejector rod on the primary top plate, the space abdication of the periphery of the valve cover workpiece is realized, the inner side of the valve cover is still in clamping fit with the ejector rod on the primary ejector plate 4, then the ejector pin plate 3 moves towards the movable template 2, because the ejector pin plate 3 and the primary top plate 4 are arranged at intervals, the ejector pin on the ejector pin plate 3 can exceed the ejector pin on the primary top plate 4, and the valve cover workpiece has enough deformation space, thereby can be with the joint in the ejecting dropout of valve gap work piece of the ejector pin on the roof board 4 just, guarantee that the valve gap can not appear pushing up white phenomenon, improve the suitability to the valve gap work piece. Injection mold still includes bottom plate 7, and bottom plate 7 is located thimble board 3's below, and bottom plate 7's surface has set firmly a plurality of stands 8, and stand 8 runs through thimble board 3 and can support with the bottom of first roof 4 and lean on. Through set up a plurality of stand 8 that run through thimble board 3 and lean on with first roof 4 on the surface at bottom plate 7, stand 8 can effectively support the unsettled part of first roof 4 like this, avoids first roof 4 atress inhomogeneous and take place to warp. Buffer columns 9 are fixedly arranged on the upper surface of the initial top plate 4 and the upper surface of the ejector plate 3. Through setting up bumping post 9 in the upper surface of initial roof 4 and the equal event of the upper surface of thimble board 3, can reduce the impact between initial roof 4 and movable mould board 2 and thimble board 3 and initial roof 4 like this, improve structural stability.
As shown in fig. 1, 3 and 4, the left and right ends of the top plate 4 have outward chutes 41, the chutes 41 are provided with movable blocks 6 having outward sliding tendency, the left and right sides of the fixed die plate 1 are provided with two vertical downwardly extending drag hooks 11, and the drag hooks 11 can abut against and cooperate with the bottom surfaces of the movable blocks 6 and drive the top plate 4 to move upward. Through set up vertical extension on fixed die plate 1 and can drive the drag hook 11 of initial roof 4 up-going through setting up movable block 6 on initial roof 4, fixed die plate 1 moves just can begin to drive initial roof motion work to the assigned position when the mould die sinking like this, and work links up and has removed the driving system of control initial roof 4 action from, practices thrift the cost and improves work efficiency. The last correspondence of movable mould board 2 sets firmly can support to and make the guide block 21 in the movable block 6 withdrawal spout 41 along vertical and movable block 6, sets up the bar groove 61 that extends along the sliding direction on the movable block 6, is equipped with anticreep round pin 42 on the roof 4 just, and anticreep round pin 42 inserts and locates in the bar groove 61. The guide block 21 which can be abutted against the movable block 6 in the vertical direction and enables the movable block 6 to retract into the chute 41 is arranged on the movable template 2, so that the draw hook 11 can continue to upwards ensure enough die sinking stroke after driving the primary top plate 4 to complete work, and the workpiece taking and maintenance operation are facilitated; through set up the cooperation of strip groove 61 on anticreep round pin 42 and the movable block 6 on the roof 4 just, anticreep round pin 42 can avoid the movable block 6 to deviate from spout 41 when losing the restriction of drag hook 11 when guaranteeing that the movable block 6 normally slides along spout 41 like this, guarantees that the mould normally works.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The utility model provides a secondary ejection injection mold, includes fixed die plate (1), movable die plate (2), thimble board (3) and is used for controlling initial roof (4) of initial separation work piece, its characterized in that, the bottom of movable die plate (2) has set firmly two backup pads (5) that are parallel to each other, initial roof (4) are located two between backup pad (5), the inboard of two backup pads (5) all has step face (51), the bottom surface of initial roof (4) can with step face (51) are spacing to support and lean on, and this initial roof (4) are located between movable die plate (2) and thimble board (3) and should the upper and lower both sides of initial roof (4) respectively with movable die plate (2) and thimble board (3) looks interval.
2. The secondary ejection injection mold according to claim 1, wherein the outer peripheral surface of the primary ejection plate (4) is provided with a sliding groove (41) which is opened outwards, a movable block (6) which tends to slide outwards is arranged in the sliding groove (41), the fixed mold plate (1) is provided with a draw hook (11) which extends vertically downwards, and the draw hook (11) can abut against and cooperate with the bottom surface of the movable block (6) and drive the primary ejection plate (4) to move upwards.
3. The secondary ejection injection mold according to claim 2, wherein the movable mold plate (2) is fixedly provided with a guide block (21) which can vertically abut against the movable block (6) and enable the movable block (6) to retract into the chute (41), the movable block (6) is provided with a strip-shaped groove (61) extending along the sliding direction, the initial top plate (4) is provided with a separation-preventing pin (42), and the separation-preventing pin (42) is inserted into the strip-shaped groove (61).
4. The secondary ejection injection mold according to claim 1, 2 or 3, characterized in that the injection mold further comprises a bottom plate (7), the bottom plate (7) is located below the ejector plate (3), a plurality of columns (8) are fixedly arranged on the surface of the bottom plate (7), and the columns (8) penetrate through the ejector plate (3) and can abut against the bottom of the primary ejection plate (4).
5. The double ejection injection mold according to claim 1, 2 or 3, wherein a buffer column (9) is fixedly arranged on each of the upper surface of the initial ejection plate (4) and the upper surface of the ejector plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921002833.6U CN210161543U (en) | 2019-06-29 | 2019-06-29 | Secondary ejection injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921002833.6U CN210161543U (en) | 2019-06-29 | 2019-06-29 | Secondary ejection injection mold |
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| Publication Number | Publication Date |
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| CN210161543U true CN210161543U (en) | 2020-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921002833.6U Active CN210161543U (en) | 2019-06-29 | 2019-06-29 | Secondary ejection injection mold |
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| CN (1) | CN210161543U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112571720A (en) * | 2020-11-26 | 2021-03-30 | 神通科技集团股份有限公司 | Injection mold and injection method for motor framework insert |
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2019
- 2019-06-29 CN CN201921002833.6U patent/CN210161543U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112571720A (en) * | 2020-11-26 | 2021-03-30 | 神通科技集团股份有限公司 | Injection mold and injection method for motor framework insert |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 318000 No.2, Daixi Road, Huangyan Economic Development Zone, Taizhou City, Zhejiang Province Patentee after: Ad Co.,Ltd. Address before: 318000 No.2, Daixi Road, Huangyan Economic Development Zone, Taizhou City, Zhejiang Province Patentee before: YONGGAO Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |