CN114131841B - Injection mold for automobile thin-wall side coaming - Google Patents
Injection mold for automobile thin-wall side coaming Download PDFInfo
- Publication number
- CN114131841B CN114131841B CN202111298141.2A CN202111298141A CN114131841B CN 114131841 B CN114131841 B CN 114131841B CN 202111298141 A CN202111298141 A CN 202111298141A CN 114131841 B CN114131841 B CN 114131841B
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- ejector
- plate
- small
- injection mold
- ejector pin
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- 238000002347 injection Methods 0.000 title claims abstract description 36
- 239000007924 injection Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 210000003195 fascia Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C2045/4084—Progressive ejection
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The application discloses an injection mold and an ejection method for an automobile thin-wall side coaming, wherein the injection mold comprises the following components: a rear template, an integral ejection structure and a local ejection structure; the integral ejection structure comprises a first ejector plate and a second ejector plate, wherein the first ejector plate is connected with a first ejector rod, the second ejector plate is connected with a connecting rod and a second ejector rod, the top of the second ejector rod is connected with a second ejector block, and the second ejector block is arranged around a horn net of the side coaming; the local ejection structure is opposite to the horn net and comprises a small ejector plate, a spring and a small bottom plate which are sequentially arranged in the rear template; the connecting rod passes through the small bottom plate and is propped against the small thimble plate; the small ejector plate is connected with an ejector pin, the elastic plate is connected with a small ejector rod, the top of the small ejector rod is connected with a small ejector block, and the end face of the small ejector block is provided with a plurality of bosses for forming horn meshes. The injection mold disclosed by the application can be used for ejecting the thin-wall side coaming of the automobile step by step, so that the horn mesh on the side coaming is prevented from being penetrated, and the side coaming with thinner wall thickness is manufactured.
Description
Technical Field
The application relates to the technical field of injection molds of automobile exterior trimming parts, in particular to an injection mold for an automobile thin-wall side coaming.
Background
The automobile side wall board is used in the automobile body, has large volume and complex structure and is generally provided with a speaker net for covering the sound box. With the high-speed development of the automobile industry, the weight of the automobile is required to be reduced, so that the thickness of the side coaming is required to be greatly reduced. Meanwhile, in order to improve user experience, the number of loudspeakers of more and more automobiles is increased to more than 8 from the original 4 loudspeakers, the size of the loudspeakers is also larger and larger, and the mesh number of a loudspeaker net is also required to be increased to improve the sound transmission rate. The high-requirement structure causes that the automobile thin-wall side coaming is easy to be punched by the ejector pins when being ejected out of the die, the phenomenon of sticking the die is easy to occur at the horn net positions with a large number of meshes, and the existing die is difficult to manufacture products meeting the requirements.
Disclosure of Invention
The application provides an injection mold for an automobile thin-wall side coaming, which at least can solve the problems that the automobile thin-wall side coaming is easy to stick to the mold and push through during injection molding.
The technical scheme of the application is realized as follows: an injection mold for an automotive thin-wall side wall panel, the automotive thin-wall side wall panel comprising a panel body and a speaker mesh, the injection mold comprising: a rear template, an integral ejection structure and a local ejection structure;
the integral ejection structure comprises a first ejector plate and a second ejector plate which are arranged below the rear template, the first ejector plate is propped against an ejector column of the injection mold, and a stroke control device is arranged between the second ejector plate and the first ejector plate;
the first ejector plate is connected with a first ejector rod, the first ejector rod is used for ejecting out the coaming body, the second ejector plate is connected with a connecting rod and a second ejector rod, the top of the second ejector rod is connected with a second ejector block, and the second ejector block is arranged around the horn mesh;
the horn net of the side coaming is opposite to the local ejection structure, and the horn net comprises a small ejector plate, an elastic plate and a small bottom plate which are arranged in the rear template; a spring is arranged between the spring plate and the small bottom plate; the connecting rod passes through the small bottom plate and abuts against the small thimble plate;
the small ejector plate is connected with an ejector pin, the elastic plate is connected with a small ejector block, and a plurality of bosses for forming speaker meshes are arranged on the end face of the small ejector block.
Further, the bottom of the rear template is provided with an accommodating groove which is used for accommodating the local ejection structure.
Further, the local ejection structure further comprises a limiting column, the limiting column is connected to the spring plate, and when the spring plate is ejected, the end portion of the limiting column abuts against the top wall of the accommodating groove.
Further, the top of connecting rod is provided with hook portion, hook portion with recess cooperation on the little thimble board.
Further, the small thimble plate comprises an upper plate and a lower plate, and the upper plate and the lower plate are stacked and fixedly connected;
the groove is arranged on the surface of the lower plate.
The application also provides an ejection method which is applied to the injection mold for the automobile thin-wall side coaming, and comprises the following steps:
first-stage ejection: the first ejector pin plate and the second ejector pin plate move under the action of the ejector pins, and the first ejector pin, the second ejector pin and the connecting rod are ejected; the small ejector pin plate moves under the action of the connecting rod, and the ejector pins are ejected; the spring plate moves under the action of a spring, and the small ejector rod is ejected out; the automobile thin-wall side coaming breaks away from the rear template under the supporting force of the first ejector rod, the large ejector block, the small ejector block and the ejector pin;
second-stage ejection: the first ejector pin plate and the second ejector pin plate move under the action of the ejector pins, and the first ejector pin, the second ejector pin and the connecting rod are continuously ejected; the small ejector pin plate moves under the action of the connecting rod, and the ejector pins are continuously ejected; the spring plate and the small ejector rod stop moving;
third stage ejection: the first ejector pin plate moves under the action of the ejector column, the first ejector pin is continuously ejected, and the second ejector pin plate, the second ejector pin and the connecting rod stop moving.
The injection mold for the automobile thin-wall side coaming has the following beneficial effects:
1. the whole ejection structure and the local ejection structure eject the coaming body and the horn net in batches, so that the tightening force of the horn net to the boss is reduced, the horn net is prevented from being adhered to the rear template, and meanwhile, the ejector pins are prevented from ejecting through the horn net;
2. the injection mold is provided with a local ejection structure aiming at the horn net, the volume of the injection mold is smaller, the weight of the spring plate is lighter, and the spring is used as ejection power, so that the ejection times are increased, and the structure of the mold is greatly simplified;
3. the injection mold uses a connecting rod connected to the second ejector plate as ejection drive of the local ejection structure, so that the injection mold can have the effect of two sets of ejection structures by only one set of ejection column, and the structure is ingenious;
4. the injection mold encircles the speaker net is provided with a plurality of second ejector blocks, so that the speaker net is prevented from being broken with the coaming body during ejection, and the production of the thin-wall side wall board is facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of the closing of an injection mold for an automotive thin-walled side panel of the present application;
FIG. 2 is a schematic view showing a partial structure of an injection mold for an automotive thin-walled side panel according to the present application;
FIG. 3 is an enlarged view at A in FIG. 1;
FIG. 4 is a first stage ejection schematic of an injection mold for an automotive thin wall side fascia in accordance with the present application;
FIG. 5 is a second stage ejection schematic of an injection mold for an automotive thin wall side fascia in accordance with the present application;
fig. 6 is a third stage ejection schematic of an injection mold for an automotive thin-walled side panel of the present application.
Wherein: 1. rear mould, 2, whole ejection structure, 3, local ejection structure, 4, jack post, 11, holding tank, 21, first ejector pin board, 22, second ejector pin board, 23, first ejector pin, 24, connecting rod, 25, big ejector block, 26, second ejector pin, 31, little ejector pin board, 32, spring plate, 33, little bottom plate, 34, spring, 35, thimble, 36, little ejector pin, 37, little ejector block, 38, spacing post, 241, hook, 311, upper plate, 312, lower plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in detail with reference to the accompanying drawings and specific embodiments.
The injection mold is used for the automobile thin-wall side surrounding plate, the automobile thin-wall side surrounding plate comprises a surrounding plate body and a speaker net, as shown in fig. 1, the injection mold comprises:
a rear mould 1 plate, an integral ejection structure 2 and a partial ejection structure 3;
the integral ejection structure 2 comprises a first ejector plate 21 and a second ejector plate 22 which are arranged below the rear die 1 plate, the first ejector plate 21 is propped against an ejector column of the injection die, and a stroke control device is arranged between the second ejector plate 22 and the first ejector plate 21; the stroke control device is a button sewing machine, which is installed at the side surfaces of the first ejector plate 21 and the second ejector plate 22. The bottom of the first ejector plate 21 is propped against the ejector column 4 of the die, and the ejector column 4 pushes the first ejector plate 21 during die opening, so that the first ejector rod 23 is ejected. The second ejector plate 22 is initially moved together with the first ejector plate 21 by the stroke control means, and subsequently the mechanism of the stroke control means is moved such that the second ejector plate 22 is no longer tensioned, and the second ejector plate 22 is no longer moved.
The first ejector plate 21 is connected with a first ejector rod 23, the first ejector rod 23 is used for ejecting out the coaming body, and the second ejector plate 22 is connected with a connecting rod 24 and a second ejector rod 26; as shown in fig. 2, a second ejector block 27 is connected to the second ejector rod top 26, and the second ejector block 27 is arranged around the horn mesh; the end part of the first ejector rod 23 is connected with a first ejector block 25.
The first ejector block 25 or the first ejector rod 23 and the second ejector block 27 are used for ejecting the coaming body, the first ejector block 25 is arranged at the position with large area and thin thickness, the contact area between the first ejector block 25 and the coaming body is larger, the coaming body is effectively prevented from being ejected, and the thin-wall side coaming is more beneficial to manufacturing. A plurality of second ejector blocks 27 are arranged around the horn net, so that the horn net is prevented from being broken with the coaming body during ejection, and the production of the thin-wall side coaming is facilitated.
The horn net of the side coaming is opposite to the partial ejection structure 3, and the horn net comprises a small ejector plate 31, an ejector plate 32 and a small bottom plate 33 which are arranged in the rear die 1 plate; specifically, the bottom of the rear mold 1 plate is provided with a containing groove 11, a small thimble plate 31, a spring plate 32 and a small bottom plate 33.
The spring 34 is arranged between the spring plate 32 and the small bottom plate 33, the local ejection structure 3 further comprises a limit post 38, the limit post 38 is connected to the spring plate 32, the spring plate 32 ejects under the action of the spring 34 when the die is opened, and when the ejection of the spring plate 32 is completed, the end part of the limit post 38 abuts against the top wall of the accommodating groove 11.
The connecting rod 24 passes through the small bottom plate 33 to prop against the small thimble plate 31; when the second ejector plate 22 moves in the forward direction, the connecting rod 24 drives the small ejector plate 31 to move in the forward direction. As shown in fig. 3, a hook portion 241 is disposed at the top end of the connecting rod 24, and the hook portion 241 is matched with a groove on the small thimble plate 31. Specifically, the small thimble plate 31 includes an upper plate 311 and a lower plate 312, and the upper plate 311 and the lower plate 312 are stacked and fixedly connected; the grooves (not shown) are provided on the surface of the lower plate 312. With the hook portion 241, the second ejector plate 22 can pull the small ejector plate 31 to move together when returning.
Wherein, small ejector pin plate 31 is connected with thimble 35, and the elastic plate 32 is connected with little ejector pin 36, and little ejector pin 36 top is connected with little ejector block 37, and the terminal surface of little ejector block 37 is equipped with a plurality of bosss that are used for shaping loudspeaker mesh.
The ejection sequence of the injection mold is as follows:
first-stage ejection: as shown in fig. 4, the first ejector pin plate 21 and the second ejector pin plate 22 move under the action of ejector pins, the small ejector pin plate 31 is driven to move by the connecting rod 24, the ejector plate 32 moves under the action of the spring 34, and the first ejector pin 23, the second ejector block 27, the small ejector block 37 and the ejector pin 35 are ejected simultaneously;
second-stage ejection: as shown in fig. 5, the first ejector plate 21, the second ejector plate 22 and the small ejector plate 31 continue to move, the limit posts 38 are abutted against the top wall of the accommodating groove 11, and the ejector plate 32 stops moving; the first ejector rod 23, the second ejector block 27 and the ejector pin 35 continue to eject, and the small ejector block 37 stops ejecting;
third stage ejection: as shown in fig. 6, the first ejector pin plate 21 continues to move, the stroke control device operates, the second ejector pin plate 22 and the small ejector pin plate 31 stop moving, and the first ejector pins 23 continue to eject.
According to the injection mold for the automobile thin-wall side coaming, the integral ejection structure 2 and the partial ejection structure 3 are used for ejecting the coaming body and the horn net for multiple times, so that the tightening force of the horn net to a boss is reduced, the horn net is prevented from being adhered to a rear mold 1 plate, and meanwhile, the ejector pins are prevented from ejecting through the horn net;
when the mold is closed, the first ejector plate 21 and the second ejector plate 22 return, the connecting rod 24 pulls the small ejector plate 31 to move towards the small bottom plate 33, the small ejector plate 31 pushes the elastic plate 32 to move towards the small bottom plate 33, and the spring 34 is compressed until the next mold opening.
In conclusion, the injection mold for the automobile thin-wall side coaming can eject the automobile thin-wall side coaming step by step, avoid the horn net on the side coaming from being propped through, and is beneficial to manufacturing the side coaming with thinner wall thickness.
In the description of the present application, it should be understood that the terms "vertical," "transverse," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the protection of the present application.
If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is for convenience only as well as to facilitate a description of the application, and is not intended to have a special meaning unless otherwise indicated.
The present application is not limited to the embodiments described above, but, if various modifications or variations of the present application are not departing from the spirit and scope of the present application, the present application is intended to include such modifications and variations as fall within the scope of the claims and the equivalents thereof.
Claims (5)
1. An injection mold for an automobile thin-wall side surrounding plate, which comprises a surrounding plate body and a speaker net, and is characterized in that the injection mold comprises: a rear template, an integral ejection structure and a local ejection structure;
the integral ejection structure comprises a first ejector plate and a second ejector plate which are arranged below the rear template, the first ejector plate is propped against an ejector column of the injection mold, and a stroke control device is arranged between the second ejector plate and the first ejector plate;
the first ejector plate is connected with a first ejector rod, the first ejector rod is used for ejecting out the coaming body, the second ejector plate is connected with a connecting rod and a second ejector rod, the top of the second ejector rod is connected with a second ejector block, and the second ejector block is arranged around the horn mesh;
the horn net of the side coaming is opposite to the local ejection structure, and the horn net comprises a small ejector plate, an elastic plate and a small bottom plate which are arranged in the rear template; a spring is arranged between the spring plate and the small bottom plate; the connecting rod passes through the small bottom plate and abuts against the small thimble plate;
the small ejector plate is connected with an ejector pin, the elastic plate is connected with a small ejector block, and a plurality of bosses for forming speaker meshes are arranged on the end face of the small ejector block;
first-stage ejection: the first ejector pin plate and the second ejector pin plate move under the action of the ejector pins, and the first ejector pin, the second ejector pin and the connecting rod are ejected; the small ejector pin plate moves under the action of the connecting rod, and the ejector pins are ejected; the spring plate moves under the action of a spring, and the small ejector rod is ejected out; the automobile thin-wall side coaming breaks away from the rear template under the supporting force of the first ejector rod, the large ejector block, the small ejector block and the ejector pin;
second-stage ejection: the first ejector pin plate and the second ejector pin plate move under the action of the ejector pins, and the first ejector pin, the second ejector pin and the connecting rod are continuously ejected; the small ejector pin plate moves under the action of the connecting rod, and the ejector pins are continuously ejected; the spring plate and the small ejector rod stop moving;
third stage ejection: the first ejector pin plate moves under the action of the ejector column, the first ejector pin is continuously ejected, and the second ejector pin plate, the second ejector pin and the connecting rod stop moving.
2. The injection mold of claim 1, wherein the mold comprises a plurality of mold cavities,
the bottom of the rear template is provided with an accommodating groove which is used for accommodating the local ejection structure.
3. The injection mold according to claim 2, wherein,
the local ejection structure further comprises a limiting column, the limiting column is connected to the spring plate, and when the spring plate is ejected, the end portion of the limiting column abuts against the top wall of the accommodating groove.
4. The injection mold of claim 1, wherein the mold comprises a plurality of mold cavities,
the top of connecting rod is provided with hook portion, hook portion with recess cooperation on the little thimble board.
5. The injection mold of claim 4, wherein the mold comprises a plurality of mold cavities,
the small thimble plate comprises an upper plate and a lower plate, and the upper plate and the lower plate are stacked and fixedly connected;
the groove is arranged on the surface of the lower plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111298141.2A CN114131841B (en) | 2021-11-04 | 2021-11-04 | Injection mold for automobile thin-wall side coaming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111298141.2A CN114131841B (en) | 2021-11-04 | 2021-11-04 | Injection mold for automobile thin-wall side coaming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114131841A CN114131841A (en) | 2022-03-04 |
| CN114131841B true CN114131841B (en) | 2023-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111298141.2A Active CN114131841B (en) | 2021-11-04 | 2021-11-04 | Injection mold for automobile thin-wall side coaming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114131841B (en) |
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| KR890012912U (en) * | 1987-12-08 | 1989-08-08 | 삼성전자 주식회사 | Injection mold 2-stage take-out device |
| JPH09136338A (en) * | 1995-11-16 | 1997-05-27 | Sumitomo Heavy Ind Ltd | Mold apparatus for molding reticulated body |
| CN102267222A (en) * | 2011-06-30 | 2011-12-07 | 宁波双林模具有限公司 | Auxiliary ejecting device for loudspeaker net part of automobile door plate injection mould |
| CN203957309U (en) * | 2014-07-04 | 2014-11-26 | 宁波双林模具有限公司 | The ejecting mechanism of loudspeaker mesh product mold |
| CN204136360U (en) * | 2014-04-30 | 2015-02-04 | 天津瑞应鑫模具制造有限公司 | A kind of increase ejecting structure |
| CN204773406U (en) * | 2015-07-13 | 2015-11-18 | 长春富维—江森自控汽车饰件系统有限公司 | Ejecting mould structure of automotive interior door plant speaker cover |
| CN105196500A (en) * | 2015-09-10 | 2015-12-30 | 台州市黄岩星泰塑料模具有限公司 | Secondary ejection mechanism for speaker mesh of door panel |
| CN112829233A (en) * | 2021-02-07 | 2021-05-25 | 广东东亚电器有限公司 | Large-diameter speaker mesh ejection mechanism and method |
-
2021
- 2021-11-04 CN CN202111298141.2A patent/CN114131841B/en active Active
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|---|---|---|---|---|
| KR890012912U (en) * | 1987-12-08 | 1989-08-08 | 삼성전자 주식회사 | Injection mold 2-stage take-out device |
| JPH09136338A (en) * | 1995-11-16 | 1997-05-27 | Sumitomo Heavy Ind Ltd | Mold apparatus for molding reticulated body |
| CN102267222A (en) * | 2011-06-30 | 2011-12-07 | 宁波双林模具有限公司 | Auxiliary ejecting device for loudspeaker net part of automobile door plate injection mould |
| CN204136360U (en) * | 2014-04-30 | 2015-02-04 | 天津瑞应鑫模具制造有限公司 | A kind of increase ejecting structure |
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| 汽车门板扬声器网孔缺陷的解决方案;王丰;;模具制造(07);P68-71 * |
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| CN114131841A (en) | 2022-03-04 |
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