CN107020727B - Firm front mold demoulding mechanism of injection mold bumper - Google Patents
Firm front mold demoulding mechanism of injection mold bumper Download PDFInfo
- Publication number
- CN107020727B CN107020727B CN201710382206.9A CN201710382206A CN107020727B CN 107020727 B CN107020727 B CN 107020727B CN 201710382206 A CN201710382206 A CN 201710382206A CN 107020727 B CN107020727 B CN 107020727B
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- Prior art keywords
- block
- ejector block
- mold
- bumper
- ejector
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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
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
-
- 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
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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
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3044—Bumpers
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A demoulding mechanism for a front mould of an injection mould bumper is provided, wherein an ejection structure is arranged on the side of a mould core and comprises a large straight ejector block, an inclined ejector block, a push block and a small straight ejector block; the ejector pin is respectively acted at the bottom of the large straight ejector block, the inclined ejector block and the small straight ejector block, the inclined ejector block is connected with an inclined guide rail in a sliding manner, the ejector block is located between the inclined ejector block and the small straight ejector block, the back of the ejector block is connected with a track rod, the track rod transversely extends inwards and is matched with the track slide rail, and the track slide rail is provided with a holding surface located on the lower portion in a vertical direction and an inner shrinkage surface located on the upper portion in an inclined manner. The invention provides a firm front mold demolding mechanism for a bumper mold, which enables a manipulator to directly adsorb and clamp a B surface to take a piece and can directly perform next procedure operation treatment on a product after the piece is taken by the manipulator, so that the production efficiency of an enterprise under high automation is realized.
Description
Technical Field
The invention belongs to the technical field of injection molds, and particularly relates to a front mold demolding mechanism for a bumper of an injection mold.
Background
At present, a bumper injection mold in the industry usually adopts post-mold demolding, a manipulator A surface (product outer surface) is adsorbed, clamped and taken, then placed on a workbench or a transfer belt, and when next process operation is carried out, secondary manual work is adopted to clamp and fix a jig on a B surface (product inner surface). The design not only increases the process steps, but also increases the labor cost and reduces the production efficiency.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a firm front mold demoulding mechanism of a bumper mold, which enables a manipulator to directly adsorb and clamp a B surface for taking a workpiece and can directly carry out the next working procedure operation treatment on the product after the workpiece is taken by the manipulator, so that the high production efficiency of enterprises under high automation is realized.
The technical scheme of the invention is as follows: a demoulding mechanism for a front mould of an injection mould bumper is provided, wherein an ejection structure is arranged on the side of a mould core and comprises a large straight ejector block, an inclined ejector block, a push block and a small straight ejector block; the outer walls of the large straight ejector block, the inclined ejector block and the push block form a molding surface of the inner surface of the side edge of the bumper, the surface of the large straight ejector block is provided with a curled edge structure for arching and molding the upper edge of the bumper, a molding cavity of a middle rib position of the bumper is formed between the bottom surface of the inclined ejector block and the top surface of the push block, and a hem structure of the lower edge of the bumper is formed between the bottom surface of the push block and the top surface of the small straight ejector block;
ejector pins are respectively acted at the bottoms of the large straight ejector block, the inclined ejector block and the small straight ejector block, the inclined ejector block is connected with an inclined guide rail in a sliding mode, the ejector block is located between the inclined ejector block and the small straight ejector block, the back of the ejector block is connected with a track rod, the track rod transversely extends inwards and is matched with the track slide rail, and the track slide rail is provided with a vertical retaining surface located at the lower part and an inclined inner shrinkage surface located at the upper part;
when the mold is opened, the mold core insert is separated from a product along with the mold core fixing plate, the inclined guide rail and the track slide rail synchronously move in the same type of core when the mold is opened, the large straight ejector block and the small straight ejector block are tightly pressed on the product under the action of the bottom ejector pin, and the inclined ejector block is transversely separated from the product along the inclined guide rail under the action of the bottom ejector pin; in the initial stage of die opening, a track rod at the back of the push block moves on the holding surface to restrain the push block to be static relative to a product, after the middle rib position moves along with the inclined ejector block in the transverse direction to be completely separated from the restraint of the inclined ejector block, the track rod rises to be matched with the inner shrinkage surface, and the push block and the inclined ejector block are separated from the product in the transverse direction; and when the push block is completely separated from the restraint of the middle rib position and the flanging structure, the large straight ejection block continues to eject out the product for a set stroke, so that all ejection structures on the mold core side stop ejecting, the ejection structures are separated from the mold cavity along with the mold core, and the bumper is attached to the mold cavity side.
Furthermore, an elastic needle is arranged in the small straight ejector block, extends upwards, penetrates through the push block and extends into the forming cavity of the middle rib position; the core fixing plate is provided with a mandril which is positioned under the elastic needle and is tightly propped against the tail part of the elastic needle during die assembly; the spring needle is sleeved with a spring which exerts downward elastic force on the spring needle.
Furthermore, a transverse T-shaped groove is formed in the bottom of the inclined ejector block, and the ejector pin is matched in the T-shaped groove in a sliding mode.
Furthermore, an auxiliary top block is embedded in the arched corner part of the large straight top block.
Furthermore, the surface of the track sliding rail is provided with a T-shaped sliding groove, and the head of the track rod is connected with a roller and embedded in the T-shaped sliding groove.
Furthermore, two sides of the head of the track rod are provided with cut edges parallel to the T-shaped sliding groove notches.
Drawings
FIG. 1 is a block diagram of a bumper product according to the present invention;
FIG. 2 is a first block diagram of the core of the present invention;
FIG. 3 is a second block diagram of the core of the present invention;
FIG. 4 is a block diagram of the die cavity of the present invention;
FIG. 5 is a cross-sectional view of a core of the present invention;
FIG. 6 is a partial cross-sectional view of the invention during injection of the mold;
fig. 7 is an exploded view of the ejection structure of the present invention.
Reference numerals: 1. a bumper; 1a, a crimping structure; 1b, middle rib position; 1c, a through hole; 1d, folding the edge; 1e, a baffle plate; 2. a large straight top block; 2a, arching; 3. an auxiliary ejector block; 4. a slanted ejecting block; 5. a push block; 6. a small straight top block; 7. a cavity slide block; 7a, a protrusion; 8. an ejector plate; 9. an oil cylinder; 10. a cavity fixing plate; 11. a core fixing plate; 12. a core insert; 13. a track slide rail; 13a, a holding surface; 13b, an inner shrinking surface; 14. a track rod; 14a, trimming; 14b, a roller; 15. a needle is flicked; 16. a spring; 17. a top rod; 18. an inclined guide rail; 19. and (4) a thimble.
Detailed Description
The invention will be further described in the following with reference to specific embodiments thereof, with reference to the accompanying drawings, in which figures 1 to 7:
a demoulding mechanism for a front mould of an injection mould bumper is provided, wherein an ejection structure is arranged on the side of a mould core and comprises a large straight ejector block 2, an inclined ejector block 4, a push block 5 and a small straight ejector block 6; the outer walls of the large straight ejector block 2, the inclined ejector block 4 and the push block 5 form a molding surface (namely an enlarged part in the figure 1) of the inner surface of the side edge of the bumper; with reference to fig. 1 and 6, the surface of the large straight ejector block 2 is provided with a hemming structure 1a for forming the upper edge of the bumper by an arch 2a, a forming cavity of the middle rib position 1b of the bumper is formed between the bottom surface of the inclined ejector block 4 and the top surface of the ejector block 5, and a hemming structure 1d of the lower edge of the bumper is formed between the bottom surface of the ejector block 5 and the top surface of the small straight ejector block 6.
Referring to fig. 7 specifically, ejector pins 19 are respectively acted on the bottoms of the large straight ejector block 2, the inclined ejector block 4 and the small straight ejector block 6, the inclined ejector block 4 is connected with inclined guide rails 18 in a sliding manner, and the inclined guide rails 18 are positioned on two sides of the inclined ejector block 4;
the pushing block 5 is positioned between the inclined ejecting block 4 and the small straight ejecting block 6, the back of the pushing block is connected with a track rod 14, the track rod 14 transversely extends inwards and is matched on a track sliding rail 13, and the track sliding rail 13 is provided with a vertical retaining surface 13a positioned at the lower part and an inclined inwards-contracting surface 13b positioned at the upper part;
when the mold is opened, the mold core insert 12 is separated from a product along with the mold core fixing plate 11, the inclined guide rail 18 and the track slide rail 13 synchronously move in the same type of core when the mold is opened, the large straight ejector block 2 and the small straight ejector block 6 are tightly pressed on the product under the action of the bottom ejector pin 19, and the inclined ejector block 4 is transversely separated from the product along the inclined guide rail 18 under the action of the bottom ejector pin 19 (the bottom of the inclined ejector block 4 is provided with a transverse T-shaped groove, and the ejector pin is in sliding fit in the T-shaped groove); in the initial stage of die opening of the push block 5, the track rod 14 on the back of the push block moves on the retaining surface 13a, the push block 5 is restrained to be static relative to a product, after the middle rib position 1b transversely moves along with the inclined ejector block 4 to be completely separated from the restraint of the inclined ejector block 4, the track rod 14 rises to be matched with the inner shrinkage surface 13b, and at the moment, the push block 5 is transversely separated from the product together with the inclined ejector block 4 under the pulling of the track rod 14; and when the push block 5 is completely separated from the restraint of the middle rib position 1b and the flanging structure 1d, the large straight ejection block 2 continuously synchronously ejects the product for a set stroke, and at this time, all ejection structures on the mold core side stop ejecting and are separated from the mold cavity along with the mold core, and the bumper is attached to the mold cavity side. After the manipulator adsorbs a product, a core of the cavity slider 7 is pulled, so that the product is separated from the cavity and is taken away by the manipulator; with reference to fig. 1, 3 and 4, a vertical baffle plate 1e is arranged at the end of the bumper and extends from the hemming structure 1a to the hemming structure 1d, a plurality of holes are formed in the baffle plate 1e and are formed by the negative of the protrusions 7a on the cavity slide block 7, and in the straight ejection process of the large straight ejection block 2, the cavity slide block 7 is kept fixed relative to the large straight ejection until all ejection structures on the mold core side stop ejecting and are separated from products along with the mold core, so that the ejection structures are separated from each other. Referring to fig. 2, here, the oil cylinder 9 is first pumped before opening the mold to ensure the pushing force of the ejector plate to the ejector pin 19 during opening the mold, and after opening the mold, the oil cylinder 9
And the mold opening action is synchronous (namely the oil cylinder 9 pulls the ejector plate to move forwards), so that the synchronous movement of the ejection structure and the cavity product is ensured when the mold core is separated from the product.
With reference to fig. 1, 6 and 7, an elastic needle 15 is arranged in the small straight ejector block 6, and the elastic needle 15 extends upwards, penetrates through the push block 5 and extends into the forming cavity of the middle rib position 1 b; the core fixing plate 11 is provided with a mandril 17, and the mandril 17 is positioned under the elastic needle 15 and tightly propped against the tail part of the elastic needle 15 during die assembly; the elastic needle 15 is provided with a spring 16 which applies downward elastic force thereto. The elastic needle 15 is used for forming a through hole 1c in the middle rib position 1b, when the mold is opened, the ejector rod 17 descends along with the core fixing plate 11, and the elastic needle 15 moves downwards under the action of the spring 16, so that the head of the elastic needle 15 is separated from the through hole 1c in the middle rib position 1 b. The stroke of the spring needle 15 is the shortest relative to other ejection structures, and during the downward movement, the push block 5 is still kept still relative to the product.
Referring to fig. 2 and 3, the auxiliary top block 3 is fitted to the corner portion of the arch 2a of the large straight top block 2. The corner corresponding to the product has higher requirement on the strength of the product, so that the auxiliary ejection block 3 is adopted to select proper ejection hardness to ensure the strength of the product.
Referring to fig. 7 in particular, a T-shaped sliding slot is formed in the surface of the track sliding rail 13, and the head of the track rod 14 is connected with a roller 14b and is embedded in the T-shaped sliding slot; two sides of the head of the track rod 14 are provided with cutting edges 14a parallel to the notches of the T-shaped sliding grooves. This configuration ensures a smoother movement of the track bar 14 within the T-shaped chute.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (6)
1. The utility model provides an injection mold bumper japanning demoulding mechanism which characterized in that: the side of the core is provided with an ejection structure which comprises a large straight ejection block (2), an inclined ejection block (4), a push block (5) and a small straight ejection block (6); the outer walls of the large straight ejector block (2), the inclined ejector block (4) and the ejector block (5) form a molding surface of the inner surface of the side edge of the bumper, an arch (2 a) is arranged on the surface of the large straight ejector block (2) and used for molding a hemming structure (1 a) of the upper edge of the bumper, a molding cavity of a middle rib position (1 b) of the bumper is formed between the bottom surface of the inclined ejector block (4) and the top surface of the ejector block (5), and a hemming structure (1 d) of the lower edge of the bumper is formed between the bottom surface of the ejector block (5) and the top surface of the small straight ejector block (6);
the ejector pin (19) is respectively acted at the bottoms of the large straight ejector block (2), the inclined ejector block (4) and the small straight ejector block (6), the inclined ejector block (4) is connected with an inclined guide rail (18) in a sliding manner, the ejector block (5) is positioned between the inclined ejector block (4) and the small straight ejector block (6), the back of the ejector block is connected with a track rod (14), the track rod (14) transversely extends inwards and is matched on a track slide rail (13), and the track slide rail (13) is provided with a vertical retaining surface (13 a) positioned at the lower part and an inclined inner contracting surface (13 b) positioned at the upper part;
when the mold is opened, the mold core insert (12) is separated from a product along with the mold core fixing plate (11), the inclined guide rail (18) and the track slide rail (13) synchronously move in the same type of core when the mold is opened, the large straight ejector block (2) and the small straight ejector block (6) are tightly pressed on the product under the action of the bottom ejector pin (19), and the inclined ejector block (4) is transversely separated from the product along the inclined guide rail (18) under the action of the bottom ejector pin (19); in the initial stage of die opening of the push block (5), a track rod (14) at the back of the push block moves on the retaining surface (13 a), the push block (5) is restrained to be static relative to a product, after the middle rib position (1 b) transversely moves along with the inclined ejection block (4) to be completely separated from the restraint of the inclined ejection block (4), the track rod (14) rises to be matched with the inner contraction surface (13 b), and at the moment, the push block (5) is transversely separated from the product together with the inclined ejection block (4) under the pulling of the track rod (14); and when the push block (5) is completely separated from the restraint of the middle rib position (1 b) and the folding edge structure (1 d), the large straight ejection block (2) continues to synchronously eject the product for a set stroke, so that all ejection structures on the side of the mold core stop ejecting, the ejection structures are separated from the mold cavity along with the mold core, and the bumper is attached to the side of the mold cavity.
2. The injection mold bumper front mold demolding mechanism according to claim 1, characterized in that: an elastic needle (15) is arranged in the small straight ejection block (6), the elastic needle (15) extends upwards, penetrates through the push block (5) and extends into a forming cavity of the middle rib position (1 b); the core fixing plate (11) is provided with a mandril (17), and the mandril (17) is positioned under the elastic needle (15) and tightly propped against the tail part of the elastic needle (15) during die assembly; the elastic needle (15) is sleeved with a spring (16) which exerts downward elastic force on the elastic needle.
3. The injection mold bumper front mold demoulding mechanism according to claim 1, characterized in that: and a transverse T-shaped groove is formed in the bottom of the inclined ejector block (4), and the ejector pin is matched in the T-shaped groove in a sliding manner.
4. The injection mold bumper front mold demoulding mechanism according to claim 1, characterized in that: the large straight top block (2) is embedded with an auxiliary top block (3) at the corner part of the arch (2 a).
5. The injection mold bumper front mold demolding mechanism according to claim 1, characterized in that: the surface of the track sliding rail (13) is provided with a T-shaped sliding groove, and the head of the track rod (14) is connected with a roller (14 b) and is embedded in the T-shaped sliding groove.
6. The injection mold bumper front mold demolding mechanism according to claim 5, wherein: and trimming edges (14 a) parallel to the notches of the T-shaped sliding grooves are arranged on two sides of the head of the track rod (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710382206.9A CN107020727B (en) | 2017-05-26 | 2017-05-26 | Firm front mold demoulding mechanism of injection mold bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710382206.9A CN107020727B (en) | 2017-05-26 | 2017-05-26 | Firm front mold demoulding mechanism of injection mold bumper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107020727A CN107020727A (en) | 2017-08-08 |
| CN107020727B true CN107020727B (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710382206.9A Active CN107020727B (en) | 2017-05-26 | 2017-05-26 | Firm front mold demoulding mechanism of injection mold bumper |
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| CN (1) | CN107020727B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189334B (en) * | 2017-12-31 | 2023-07-14 | 宁波如强模塑有限公司 | Demoulding mechanism of instrument panel |
| CN111633921B (en) * | 2020-06-08 | 2021-03-23 | 东莞顶钧塑胶模具有限公司 | Mechanism for preventing product from sticking to inclined top during mold opening of inclined top |
| CN115556319B (en) * | 2022-10-18 | 2023-08-04 | 合肥昊翔汽车零部件有限公司 | Injection molding demolding mechanical arm for automobile rearview mirror outer shell |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2757597B2 (en) * | 1991-07-19 | 1998-05-25 | 日産自動車株式会社 | Mold for resin bumper |
| JPH07266384A (en) * | 1994-03-28 | 1995-10-17 | Mazda Motor Corp | Injection mold |
| CN202129948U (en) * | 2011-06-28 | 2012-02-01 | 宁波宇升模业有限公司 | Mechanism capable of synchronously pulling core from inner side and outer side of automobile wheel injection mould |
| CN205044086U (en) * | 2015-09-30 | 2016-02-24 | 浙江凯华模具有限公司 | Mechanism of loosing core to one side in header board injection mould combination formula |
| CN106042296B (en) * | 2016-07-25 | 2018-02-09 | 台州市黄岩坤泰模具有限公司 | Injection molding die for bumper deformation space resigning mechanism |
| CN106393602B (en) * | 2016-08-31 | 2018-12-07 | 宁波方正汽车模具股份有限公司 | Liftout attachment for bumper mold |
| CN106335166B (en) * | 2016-11-24 | 2018-06-26 | 台州市黄岩宏特精工模具有限公司 | Vehicle bumper injection mold |
| CN206937856U (en) * | 2017-05-26 | 2018-01-30 | 台州市凯华汽车模具有限公司 | Injection mold bumper Lao Qian moulding/demouldings mechanism |
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2017
- 2017-05-26 CN CN201710382206.9A patent/CN107020727B/en active Active
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| CN107020727A (en) | 2017-08-08 |
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Inventor after: Liang Zhenghua Inventor before: Liang Zhenhua |
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