CN115489055B - Mold for demolding arc-shaped automobile parts - Google Patents
Mold for demolding arc-shaped automobile parts Download PDFInfo
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- CN115489055B CN115489055B CN202211442593.8A CN202211442593A CN115489055B CN 115489055 B CN115489055 B CN 115489055B CN 202211442593 A CN202211442593 A CN 202211442593A CN 115489055 B CN115489055 B CN 115489055B
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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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
- B29C33/442—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with mechanical ejector or drive means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a mold for demolding arc-shaped automobile parts, which belongs to the technical field of molds and comprises the following components: feeding a mold frame; die carrier and ejection mechanism down, this ejection mechanism includes: the jacking plate is arranged on the lower die frame, a sliding block is embedded in the jacking plate, and a first arc-shaped sliding groove is formed in the sliding block and is opposite to a second arc-shaped sliding groove in the lower die cavity; the two ends of the ejector rod are respectively a first connecting end and a second connecting end, the first connecting end is in sliding fit with the first arc-shaped sliding groove, the second connecting end is inserted into the second arc-shaped sliding groove, the first connecting end and the second connecting end are used as base points and respectively rotate in opposite directions, and a rod body between the first connecting end and the second connecting end on the ejector rod is twisted. The invention avoids the local arch phenomenon of the arc automobile parts during demoulding through the jacking mechanism, thereby improving the demoulding quality of the arc automobile parts.
Description
Technical Field
The invention belongs to the technical field of dies, and relates to a die, in particular to a die for demolding arc-shaped automobile parts.
Background
In the prior art, most parts in automobile parts are not straight strip-shaped or planar, and the middle part of the automobile parts is bent or the end parts of the automobile parts are bent, such as automobile wheel trims, and the whole automobile parts are of arc-shaped structures. The automobile wheel arch is a decorative strip on a tire, namely a semicircular strip-shaped or crescent-shaped part protruding from the upper surface of an automobile tire along a fender, and the automobile wheel arch mainly has the functions of preventing the fender from being scratched and scratched during decoration and running and reducing the wind resistance coefficient.
Because the whole arc setting that is of car wheel arch, if directly adopt the ejector pin vertical or slant ejecting, lead to the wheel arch to form "local arch" structure at the drawing of patterns in-process to influence the drawing of patterns effect and the shaping quality of wheel arch.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a die which is convenient for demoulding of arc-shaped automobile parts and ensures the forming quality of the automobile parts.
The purpose of the invention can be realized by the following technical scheme: a mold for demolding arcuate automobile parts, comprising: the upper die frame is connected with an upper die plate, and an upper die cavity is arranged in the upper die plate; lower die carrier, and be connected with the lower bolster on the die carrier down, and be provided with down the die cavity in the lower bolster, wherein, work as go up the die cavity with during the die cavity concatenation down, form the die cavity that is used for shaping arc automobile parts, still include:
an ejection mechanism, the ejection mechanism comprising:
the jacking plate is arranged on the lower die frame, a sliding block is embedded in the jacking plate, and a first arc-shaped sliding groove is formed in the sliding block, wherein the first arc-shaped sliding groove is opposite to a second arc-shaped sliding groove in the lower die cavity;
the ejector rod is arranged in a strip shape, a first connecting end and a second connecting end are arranged at two ends of the ejector rod respectively, the first connecting end is in sliding fit with the first arc-shaped sliding groove, and the second connecting end is inserted into the second arc-shaped sliding groove;
when the jacking plate moves upwards, the ejector rod is driven to move upwards, so that the first connecting end on the ejector rod translates along the first arc-shaped sliding groove, and the second connecting end on the ejector rod slides along the surface of the arc-shaped automobile part while jacking up the formed arc-shaped automobile part in the lower die cavity.
In the above mold for demolding the arc-shaped automobile part, when the arc-shaped automobile part is molded in the lower mold cavity, a concave cavity is arranged at a position on the arc-shaped automobile part corresponding to the second arc-shaped sliding groove, wherein the second connecting end extends into the concave cavity, and slides in the concave cavity along with the upward movement of the ejector rod.
In the above mold for demolding the arc-shaped automobile part, the insert integrally arranged with the lower template is arranged in the second arc-shaped sliding groove, the second connecting end of the second arc-shaped sliding groove is extended into the ejector rod, and is spliced with the insert to form the inner insert of the second arc-shaped sliding groove, wherein a gap is formed between the outer peripheral surface of the inner insert and the groove wall of the second arc-shaped sliding groove, and the cavity wall of the cavity on the arc-shaped automobile part is formed through the gap.
In the above mold for demolding the arc-shaped automobile part, a wedge-shaped fit is formed between the second connecting end and the insert, wherein a first inclined surface is arranged on the insert, a second inclined surface in sliding fit with the first inclined surface is arranged on the second connecting end, and when the ejector rod moves up and down along with the jacking plate, the second inclined surface and the first inclined surface slide relatively, so that the second connecting end slides in the cavity of the arc-shaped automobile part.
In the above mold for demolding the arc-shaped automobile part, the first connecting end is in nested fit with the first arc-shaped chute, and two strip-shaped grooves are respectively arranged on two sides of the first connecting end, wherein the two strip-shaped grooves are correspondingly clamped with two sides of the opening end of the first arc-shaped chute.
In the above mold for demolding of the arc-shaped automobile part, the lifting plate is provided with an installation plane, the slider is embedded on the installation plane and is connected to the lifting plate through a fastener, and a height difference exists between a plane where the groove bottom of the first arc-shaped sliding groove is located and the installation plane.
In the above mold for demolding the arc-shaped automobile part, the projections of the first arc-shaped chute and the second arc-shaped chute in the installation plane are parallel to each other and are arranged in a staggered manner.
In the die for demolding the arc-shaped automobile parts, the guide block is nested on the rod body between the first connecting end and the second connecting end, the guide block is embedded on the lower die plate and is connected with the guide block and the lower die plate through a fastening piece, and the guide block is provided with a guide channel which is used as a push rod when the push rod moves up and down along with the jacking plate.
In the above-mentioned mould for demoulding of arc automobile parts, a jacking cylinder is installed on the lower mould frame, the output end of the jacking cylinder is connected with the jacking plate through a connecting block, and the jacking cylinder drives the jacking plate to move up and down.
Compared with the prior art, the invention has the following beneficial effects:
according to the die for demolding the arc-shaped automobile parts, provided by the invention, when the molded arc-shaped automobile parts are demolded, the jacking mechanism and the arc-shaped automobile parts are synchronously moved upwards, and the jacking mechanism slides on the surfaces of the arc-shaped automobile parts, so that the phenomenon of local arch of the arc-shaped automobile parts is avoided when the arc-shaped automobile parts are demolded, and the demolding quality of the arc-shaped automobile parts is improved.
Drawings
Fig. 1 is a schematic structural view of a mold for demolding arc-shaped automobile parts according to the present invention.
Fig. 2 is a schematic partial structural view one of the mold shown in fig. 1.
Fig. 3 is a schematic view of a partial structure of the mold shown in fig. 1.
Fig. 4 is an enlarged view of a portion a in fig. 2.
Fig. 5 is an enlarged view of a portion B in fig. 3.
FIG. 6 is a schematic view of a portion of the structure between the curved vehicle component and the ejector mechanism in a preferred embodiment of the invention.
FIG. 7 is a schematic structural diagram of an upper mold plate according to a preferred embodiment of the present invention.
FIG. 8 is a schematic structural view of the lower template in a preferred embodiment of the present invention.
Fig. 9 is an enlarged view of a portion C in fig. 8.
FIG. 10 is a schematic view of a guide block according to a preferred embodiment of the present invention.
FIG. 11 is a schematic view of a slider according to a preferred embodiment of the present invention.
FIG. 12 is a schematic view of the top bar according to a preferred embodiment of the present invention.
In the figure, 100, the upper mold frame; 110. mounting a template; 120. an upper mold cavity; 200. a lower die frame; 210. a lower template; 220. a lower die cavity; 221. a second arc-shaped chute; 230. an insert; 231. a first inclined plane; 240. a gap; 250. jacking a cylinder; 260. connecting blocks; 300. an ejection mechanism; 310. a jacking plate; 311. a mounting plane; 320. a slider; 321. a first arc chute; 330. a top rod; 331. a first connection end; 332. a second connection end; 333. a rod body; 334. a second inclined plane; 335. a strip-shaped groove; 340. a guide block; 341. a guide channel; 400. an arcuate automobile part; 410. a cavity.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
It should be noted that all directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
As shown in fig. 1 to 12, the present invention provides a mold for demolding arc-shaped automobile parts, comprising:
an upper die frame 100, wherein an upper die plate 110 is connected to the upper die frame 100, and an upper die cavity 120 is arranged in the upper die plate 110;
the lower die carrier 200 is connected with a lower template 210, and a lower die cavity 220 is arranged in the lower template 210, wherein when the upper die cavity 120 is spliced with the lower die cavity 220, a die cavity for molding the arc-shaped automobile part 400 is formed, and a second arc-shaped chute 221 is arranged on the lower die cavity 220;
the ejection mechanism 300 comprises an ejection plate 310 installed on the lower die carrier 200, a sliding block 320 is embedded in the ejection plate 310, and a first arc-shaped sliding groove 321 is formed in the sliding block 320, wherein the first arc-shaped sliding groove 321 and the second arc-shaped sliding groove 221 are arranged oppositely; the top rod 330 is arranged in a strip shape, two ends of the top rod are respectively a first connecting end 331 and a second connecting end 332, the first connecting end 331 is in sliding fit with the first arc-shaped sliding groove 321, and the second connecting end 332 is inserted into the second arc-shaped sliding groove 221, wherein the first connecting end 331 and the second connecting end 332 are used as base points and respectively rotate along opposite directions, so that the rod body 333 between the first connecting end 331 and the second connecting end 332 on the top rod 330 is in a torsion shape;
when the lifting plate 310 moves upward, the push rod 330 is driven to move upward, so that the first connecting end 331 on the push rod 330 translates along the first arc-shaped sliding groove 321, and the second connecting end 332 on the push rod 330 slides along the surface of the arc-shaped automobile part 400 while lifting up the arc-shaped automobile part 400 molded in the lower mold cavity 220.
According to the die for demoulding the arc-shaped automobile part, provided by the invention, when the formed arc-shaped automobile part 400 is demoulded, the jacking mechanism and the arc-shaped automobile part 400 not only synchronously move upwards, but also slide on the surface of the arc-shaped automobile part 400, so that the phenomenon of local arch of the arc-shaped automobile part 400 is avoided when the arc-shaped automobile part 400 is demoulded, and the demoulding quality of the arc-shaped automobile part 400 is improved.
Preferably, when the arc-shaped automobile part 400 is molded in the lower mold cavity 220, a concave cavity 410 is formed on the arc-shaped automobile part 400 at a position corresponding to the second arc-shaped sliding chute 221, wherein the second connecting end 332 extends into the concave cavity 410, and the second connecting end 332 slides in the concave cavity 410 along with the upward movement of the top rod 330.
It should be noted that the first connecting end 331 performs an arc movement in the horizontal plane in the first arc sliding groove 321, and the second connecting end 332 performs a vertical rotation movement in the vertical plane in the second arc sliding groove 221.
Preferably, an insert 230 integrally arranged with the lower template 210 is arranged in the second arc-shaped chute 221, the ejector rod 330 extends into the second connecting end 332 of the second arc-shaped chute 221 and is spliced with the insert 230 to form an inner insert of the second arc-shaped chute 221, wherein a gap 240 is formed between the outer peripheral surface of the inner insert and the groove wall of the second arc-shaped chute 221, and the cavity wall of the cavity 410 on the arc-shaped automobile part 400 is formed through the gap 240.
Further preferably, a wedge-shaped fit is formed between the second connecting end 332 and the insert 230, wherein the insert 230 is provided with a first inclined surface 231, and the second connecting end 332 is provided with a second inclined surface 334 slidably fitted with the first inclined surface 231, when the push rod 330 moves up and down along with the lifting plate 310, the second inclined surface 334 and the first inclined surface 231 slide relatively, so that the second connecting end 332 slides in the cavity 410 of the arc-shaped automobile part 400.
It should be noted that the insert 230 belongs to a fixed component, the second connecting end 332 on the top rod 330 belongs to a movable component, and due to the wedge-shaped fit between the insert 230 and the second connecting end 332, when the top rod 330 moves up and down along with the lifting plate 310, the first inclined surface 231 and the second inclined surface 334 move relatively, so that the second connecting end 332 moves in the cavity 410 of the molded arc-shaped automobile part 400. Therefore, the carrier rod 330 drives the arc-shaped automobile part 400 to move upwards and also move on the arc-shaped automobile part 400, so that the movement of the carrier rod 330 is a compound movement.
Preferably, the first connection end 331 is in nested fit with the first arc-shaped sliding groove 321, and two strip-shaped grooves 335 are respectively disposed on two sides of the first connection end 331, wherein the two strip-shaped grooves 335 are correspondingly clamped with two sides of an opening end of the first arc-shaped sliding groove 321.
Further preferably, the lifting plate 310 is provided with a mounting plane 311, and the slider 320 is embedded on the mounting plane 311 and connected to the lifting plate 310 by a fastener, wherein a height difference exists between the plane of the bottom wall of the first arc-shaped sliding chute 321 and the mounting plane 311.
It should be mentioned that, a height difference exists between the plane where the groove bottom of the first arc-shaped sliding groove 321 is located on the sliding block 320 and the installation plane 311, and the horizontal height of the plane where the groove bottom of the first arc-shaped sliding groove 321 is located is lower than the horizontal height of the installation plane 311, so that a part of the structure of the first arc-shaped sliding groove 321 is buried in the lifting plate 310, and a limiting portion is formed when the first connection end 331 moves in the first arc-shaped sliding groove 321, thereby improving the reliability when the first connection end 331 slides.
Further preferably, the projections of the first arc-shaped sliding chute 321 and the second arc-shaped sliding chute 221 in the installation plane 311 are parallel to each other and are arranged in a staggered manner.
Preferably, the guide block 340 is nested on the rod body 333 between the first connecting end 331 and the second connecting end 332, the guide block 340 is embedded on the lower template 210, and the guide block 340 and the lower template 210 are connected by a fastener, wherein the guide block 340 is provided with a guide channel 341 used as the push rod 330 when moving up and down along with the lifting plate 310.
It is worth mentioning that the smoothness of the lift pin 330 during the up and down movement is ensured by the guide block 340, and the movement track of the lift pin 330 in the guide passage 341 is rotated while being upward or downward.
Preferably, the lower mold frame 200 is provided with a jacking cylinder 250, an output end of the jacking cylinder 250 is connected with the jacking plate 310 through a connecting block 260, and the jacking cylinder 250 drives the jacking plate 310 to move up and down.
It should be noted that the descriptions related to "first", "second", "a", etc. in the present invention are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or implicit indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The terms "connected," "fixed," and the like are to be construed broadly, e.g., "fixed" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments, or alternatives may be employed, by those skilled in the art, without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (8)
1. A mold for demolding arc-shaped automobile parts comprises an upper mold frame (100), wherein an upper mold plate (110) is connected to the upper mold frame (100), and an upper mold cavity (120) is arranged in the upper mold plate (110); lower die carrier (200), and be connected with lower bolster (210) on lower die carrier (200), and be provided with lower die cavity (220) in lower bolster (210), wherein, when last die cavity (120) with when lower die cavity (220) splice, form the die cavity that is used for shaping arc automobile parts (400), its characterized in that still includes:
an ejection mechanism (300), the ejection mechanism (300) comprising:
the mould comprises a lifting plate (310) which is arranged on the lower mould frame (200), a sliding block (320) is embedded in the lifting plate (310), a first arc-shaped sliding groove (321) is formed in the sliding block (320), and the first arc-shaped sliding groove (321) is opposite to a second arc-shaped sliding groove (221) in the lower mould cavity (220);
the push rod (330) is arranged in a strip shape, two ends of the push rod are respectively a first connecting end (331) and a second connecting end (332), the first connecting end (331) is in sliding fit with the first arc-shaped sliding groove (321), the second connecting end (332) is inserted into the second arc-shaped sliding groove (221), the first connecting end (331) and the second connecting end (332) are taken as base points and respectively rotate along opposite directions, and a rod body (333) between the first connecting end (331) and the second connecting end (332) on the push rod (330) is twisted;
when the jacking plate (310) moves upwards, the jacking rod (330) is driven to move upwards, so that a first connecting end (331) on the jacking rod (330) translates along the first arc-shaped sliding groove (321), and a second connecting end (332) on the jacking rod (330) slides along the surface of the arc-shaped automobile part (400) while jacking up the arc-shaped automobile part (400) formed in the lower die cavity (220);
when the arc-shaped automobile part (400) is formed in the lower die cavity (220), a concave cavity (410) is formed in the arc-shaped automobile part (400) at a position corresponding to the second arc-shaped sliding groove (221), wherein the second connecting end (332) extends into the concave cavity (410), and moves upwards along with the ejector rod (330), so that the second connecting end (332) slides in the concave cavity (410).
2. The mold for demolding the arc-shaped automobile part as claimed in claim 1, wherein an insert (230) integrally arranged with the lower mold plate (210) is arranged in the second arc-shaped chute (221), a second connecting end (332) of the ejector rod (330) extending into the second arc-shaped chute (221) is spliced with the insert (230) to form an inner insert of the second arc-shaped chute (221), wherein a gap (240) is formed between an outer peripheral surface of the inner insert and a groove wall of the second arc-shaped chute (221), and a cavity wall of a cavity (410) on the arc-shaped automobile part (400) is formed through the gap (240).
3. The mold for demolding curved automobile parts as claimed in claim 2, wherein the second connecting end (332) forms a wedge-shaped fit with the insert (230), wherein a first inclined surface (231) is provided on the insert (230), and a second inclined surface (334) slidably fitted with the first inclined surface (231) is provided on the second connecting end (332), and when the ejector rod (330) moves up and down along with the lifting plate (310), the second inclined surface (334) slides relative to the first inclined surface (231), so that the second connecting end (332) slides in the cavity (410) of the curved automobile part (400).
4. The mold for demolding arc-shaped automobile parts as claimed in claim 1, wherein the first connecting end (331) is in nested fit with the first arc-shaped chute (321), and a strip-shaped groove (335) is respectively arranged on two sides of the first connecting end (331), wherein the two strip-shaped grooves (335) are correspondingly clamped with two sides of the open end of the first arc-shaped chute (321).
5. The mold for demolding arc-shaped automobile parts as claimed in claim 4, wherein a mounting plane (311) is arranged on the lifting plate (310), the slider (320) is embedded on the mounting plane (311) and is connected to the lifting plate (310) through a fastener, and a height difference exists between a plane where the groove bottom of the first arc-shaped chute (321) is located and the mounting plane (311).
6. The mold for demolding the arc-shaped automobile part as claimed in claim 5, wherein projections of the first arc-shaped chute (321) and the second arc-shaped chute (221) in the installation plane (311) are parallel to each other and are arranged in a staggered manner.
7. The die for demolding arc-shaped automobile parts as claimed in claim 1, wherein a guide block (340) is nested on the rod body (333) between the first connecting end (331) and the second connecting end (332), the guide block (340) is embedded on the lower die plate (210), and the guide block (340) is connected with the lower die plate (210) through a fastener, wherein a guide channel (341) is arranged on the guide block (340) and is used as a guide when the ejector rod (330) moves up and down along with the jacking plate (310).
8. The mold for demolding arc-shaped automobile parts as claimed in claim 1, wherein a jacking cylinder (250) is mounted on the lower mold frame (200), an output end of the jacking cylinder (250) is connected with the jacking plate (310) through a connecting block (260), and the jacking cylinder (250) drives the jacking plate (310) to move up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211442593.8A CN115489055B (en) | 2022-11-18 | 2022-11-18 | Mold for demolding arc-shaped automobile parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211442593.8A CN115489055B (en) | 2022-11-18 | 2022-11-18 | Mold for demolding arc-shaped automobile parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115489055A CN115489055A (en) | 2022-12-20 |
| CN115489055B true CN115489055B (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211442593.8A Active CN115489055B (en) | 2022-11-18 | 2022-11-18 | Mold for demolding arc-shaped automobile parts |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6399006B1 (en) * | 2000-06-08 | 2002-06-04 | Entegris, Inc. | Process and apparatus for molding polymer sweep fittings |
| US6655952B1 (en) * | 2001-10-19 | 2003-12-02 | Tooling Technologies, Inc. | 3-axis undercut release apparatus and method |
| CN206780914U (en) * | 2017-05-27 | 2017-12-22 | 宁波建林模具有限公司 | A kind of automobile wheel arch mould |
| CN108115908A (en) * | 2017-12-20 | 2018-06-05 | 台州市黄岩双盛塑模有限公司 | Fender body die wheel arch combines mould emptier |
| CN214353964U (en) * | 2021-01-26 | 2021-10-08 | 无锡齐高科技有限公司 | Injection mold frame for producing automobile parts |
| CN115139472B (en) * | 2022-09-01 | 2022-12-23 | 宁波兴利汽车模具有限公司 | Pitched roof demolding mechanism for demolding automobile parts |
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2022
- 2022-11-18 CN CN202211442593.8A patent/CN115489055B/en active Active
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