CN111113823B - Secondary ejection mechanism of injection mold - Google Patents
Secondary ejection mechanism of injection mold Download PDFInfo
- Publication number
- CN111113823B CN111113823B CN201911404696.3A CN201911404696A CN111113823B CN 111113823 B CN111113823 B CN 111113823B CN 201911404696 A CN201911404696 A CN 201911404696A CN 111113823 B CN111113823 B CN 111113823B
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- block
- straight
- straight ejector
- semicircular groove
- movable pin
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a secondary ejection mechanism of an injection mold, which comprises an ejector plate, wherein the ejector plate is connected with a first straight ejector block through a straight ejector rod, a second straight ejector block is arranged below the side of the first straight ejector block, the head of the second straight ejector block is provided with a forming part for forming a product in an inverted buckle mode, the lower part of the second straight ejector block is tightly attached to the straight ejector rod and is horizontally provided with a through hole, a movable pin is arranged in the through hole in a sliding mode, two ends of the movable pin are hemispherical, a first semicircular groove is formed in the corresponding side surface of the straight ejector rod, a limiting block is further arranged on one side, away from the straight ejector rod, of the second straight ejector block, the limiting block is fixed on a movable die and is tightly attached to the second straight ejector block, and a second semicircular groove is formed in one side surface of the limiting block. The ejection mechanism is simple in structure, and secondary ejection is realized by arranging the second straight ejection block, so that the product is stably ejected from the die in a back-off manner, and the production efficiency is improved.
Description
Technical Field
The invention relates to a secondary ejection mechanism of an injection mold, and belongs to the technical field of injection molds.
Background
In the working process of the injection mold, the condition that the product is inverted often occurs, the inverted buckle increases the difficulty of demolding, the inverted buckle is easy to damage due to direct ejection, demolding failure is caused, and the yield of the product is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a secondary ejection mechanism of an injection mold.
The technical scheme adopted by the invention for realizing the purpose is as follows:
the secondary ejection mechanism of the injection mold comprises an ejector plate, wherein the ejector plate is connected with a first straight ejector block through a straight ejector rod, a second straight ejector block is arranged below the side of the first straight ejector block, a forming part for forming product back-off is formed at the head part of the second straight ejector block, a through hole is tightly attached to the lower part of the second straight ejector block and the straight ejector rod and horizontally formed in the lower part of the second straight ejector block, a movable pin is arranged in the through hole in a sliding manner, the two ends of the movable pin are hemispherical, a first semicircular groove is formed in the corresponding side surface of the straight ejector rod, a limiting block is further arranged on one side, away from the straight ejector rod, of the second straight ejector block, the limiting block is fixed on a movable mold and tightly attached to the second straight ejector block, a second semicircular groove is formed in one side surface of the limiting block, the first semicircular groove and the second semicircular groove are oppositely arranged, and the first semicircular groove is positioned below the second semicircular groove, when the die is closed, one end of the movable pin is positioned in the first semicircular groove, and the other end of the movable pin is abutted to the limiting block.
As a further optimization of the above technical solution: and when the die is closed, the horizontal plane where the highest point of the through hole is just coplanar with the horizontal plane where the lowest point of the second semicircular groove is.
As a further optimization of the above technical solution: the contact surface between the first straight ejecting block and the second straight ejecting block is made into a step shape.
Compared with the prior art, the ejection mechanism is simple in structure, secondary ejection is achieved by arranging the second straight ejection block, so that the product is stably ejected from the die in a back-off mode, and the production efficiency is improved.
Drawings
Fig. 1 is a schematic sectional view showing a clamped state according to the present invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description. As shown in fig. 1, the secondary ejection mechanism of the injection mold comprises an ejector plate 5, wherein the ejector plate 5 is connected with a first straight ejector block 1 through a straight ejector rod 4, a second straight ejector block 2 is arranged below the side of the first straight ejector block 1, a forming part 21 for forming the product in a back-off manner is formed at the head of the second straight ejector block 2, a through hole 22 is formed at the lower part of the second straight ejector block 2 and the straight ejector rod 4 in a clinging manner and horizontally formed, a movable pin 3 is arranged in the through hole 22 in a sliding manner, both ends of the movable pin 3 are hemispherical, a first semicircular groove is formed on the corresponding side surface of the straight ejector rod 4, a limit block 6 is further arranged on one side of the second straight ejector block 2 far away from the straight ejector rod 4, the limit block 6 is fixed on a movable mold and clings to the second straight ejector block 2, a second semicircular groove 61 is formed on one side surface of the limit block 6, the first semicircular groove and the second semicircular groove 61 are arranged oppositely, and the first semicircular groove is positioned below the second semicircular groove 61, one end of the movable pin 3 is positioned in the first semicircular groove when the die is closed, and the other end of the movable pin is abutted against the limiting block 6.
In the above technical scheme: when the die is closed, the horizontal plane of the highest point of the through hole 22 is just coplanar with the horizontal plane of the lowest point of the second semicircular groove 61. The distance enables the reverse buckle on the second straight ejection block 2 to be completely separated from the movable die insert during primary ejection, and stable ejection can be guaranteed during secondary ejection.
In the above technical scheme: the contact surface between the first straight ejecting block 1 and the second straight ejecting block 2 is made into a step shape, so that the first straight ejecting block 1 and the second straight ejecting block 2 can be better positioned during mold closing, and the first straight ejecting block 1 and the second straight ejecting block 2 are prevented from not resetting in place during mold closing to cause failure in injection molding.
During die assembly, one end of the movable pin 3 is positioned in the first semicircular groove, the other end of the movable pin is abutted against the left side face of the limiting block 6, the movable pin 3 is positioned below the second semicircular groove 61, the horizontal plane where the highest point of the movable pin 3 is just coplanar with the horizontal plane where the lowest point of the second semicircular groove 61 is, and injection molding is started. After the injection molding is finished, the product wraps the forming part 21 of the second straight ejecting block 2. The movable mould starts to be separated, the ejector plate 5 drives the first straight ejector block 1 to perform ejection motion through the straight ejector rod 4, and the movable pin 3 is connected between the second straight ejector block 2 and the straight ejector rod 4, so that the second straight ejector block 2 also performs ejection motion along with the straight ejector rod 4, and a product is gradually separated from the movable mould insert in the process. Until one end of the movable pin 3 is separated from the first semicircular groove, the other end of the movable pin slides into the second semicircular groove 61, at the moment, the second straight ejector block 2 is disconnected from the straight ejector rod 4, the first straight ejector block 1 continues to perform ejection movement, the second straight ejector block 2 stops moving, accordingly, the back-off gradually separates from the forming part 21, and finally, the product is taken away to complete an injection molding cycle.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concept of the present invention should fall within the scope of the present invention.
Claims (2)
1. A secondary ejection mechanism of an injection mold comprises an ejector plate (5), wherein the ejector plate (5) is connected with a first straight ejector block (1) through a straight ejector rod (4), the secondary ejection mechanism is characterized in that a second straight ejector block (2) is arranged below the side of the first straight ejector block (1), a forming part (21) for forming product back-off is formed in the head part of the second straight ejector block (2), a through hole (22) is formed in the lower part of the second straight ejector block (2) and the straight ejector rod (4) in a clinging and horizontal mode, a movable pin (3) is arranged in the through hole (22) in a sliding mode, the two ends of the movable pin (3) are hemispherical, a first semicircular groove is formed in the corresponding side surface of the straight ejector rod (4), a limiting block (6) is further arranged on one side, far away from the straight ejector rod (4), of the second straight ejector block (2), the limiting block (6) is fixed on a movable mold and clings to the second straight ejector block (2), a second semicircular groove (61) is formed in one side face of the limiting block (6), the first semicircular groove and the second semicircular groove (61) are arranged oppositely, the first semicircular groove is located below the second semicircular groove (61), one end of the movable pin (3) is located in the first semicircular groove when the die is closed, the other end of the movable pin is abutted to the limiting block (6), and a contact surface between the first straight ejecting block (1) and the second straight ejecting block (2) is made into a stepped shape.
2. The secondary ejection mechanism of an injection mold according to claim 1, wherein the horizontal plane of the highest point of the through hole (22) is just coplanar with the horizontal plane of the lowest point of the second half-slot (61) when closing the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911404696.3A CN111113823B (en) | 2019-12-31 | 2019-12-31 | Secondary ejection mechanism of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911404696.3A CN111113823B (en) | 2019-12-31 | 2019-12-31 | Secondary ejection mechanism of injection mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111113823A CN111113823A (en) | 2020-05-08 |
| CN111113823B true CN111113823B (en) | 2021-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911404696.3A Active CN111113823B (en) | 2019-12-31 | 2019-12-31 | Secondary ejection mechanism of injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111113823B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001009879A (en) * | 1999-06-29 | 2001-01-16 | Nissan Motor Co Ltd | Injection molding machine |
| US6682336B1 (en) * | 1998-06-02 | 2004-01-27 | New Bright Industrial Co., Ltd. | Apparatus for injection molding plastic helical gears |
| KR20040048726A (en) * | 2002-12-04 | 2004-06-10 | 현대자동차주식회사 | Adjustment type slide core |
| CN208035263U (en) * | 2018-03-02 | 2018-11-02 | 厦门协晟源模具有限公司 | Injection mold thimble plate secondary ejecting mechanism |
| CN208263355U (en) * | 2018-05-15 | 2018-12-21 | 苏州博宇科技有限公司 | Ejecting push plate deduction |
| CN212045809U (en) * | 2019-12-31 | 2020-12-01 | 台州市黄岩西诺模具有限公司 | Secondary ejection mechanism of injection mold |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5282730A (en) * | 1991-06-12 | 1994-02-01 | Automotive Plastic Technologies | Retractable gas injection pin for an injection mold |
| JP3779128B2 (en) * | 1999-06-24 | 2006-05-24 | パイオニア株式会社 | Ultrasonic injection mold for optical disc |
| JP2009083431A (en) * | 2007-10-02 | 2009-04-23 | Olympus Corp | Mold for injection molding and method of releasing molding |
| CN107415178A (en) * | 2017-09-10 | 2017-12-01 | 健大电业制品（昆山）有限公司 | A kind of secondary strong release mechanism of injection mold |
-
2019
- 2019-12-31 CN CN201911404696.3A patent/CN111113823B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6682336B1 (en) * | 1998-06-02 | 2004-01-27 | New Bright Industrial Co., Ltd. | Apparatus for injection molding plastic helical gears |
| JP2001009879A (en) * | 1999-06-29 | 2001-01-16 | Nissan Motor Co Ltd | Injection molding machine |
| KR20040048726A (en) * | 2002-12-04 | 2004-06-10 | 현대자동차주식회사 | Adjustment type slide core |
| CN208035263U (en) * | 2018-03-02 | 2018-11-02 | 厦门协晟源模具有限公司 | Injection mold thimble plate secondary ejecting mechanism |
| CN208263355U (en) * | 2018-05-15 | 2018-12-21 | 苏州博宇科技有限公司 | Ejecting push plate deduction |
| CN212045809U (en) * | 2019-12-31 | 2020-12-01 | 台州市黄岩西诺模具有限公司 | Secondary ejection mechanism of injection mold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111113823A (en) | 2020-05-08 |
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Address after: 318020 No. 369 Xinjiang Road, Xinqian Street, Huangyan, Taizhou City, Zhejiang Province Patentee after: Zhejiang Xinuo Mold Co.,Ltd. Address before: 318020 no.369, Xinjiang road, Xinqian street, Huangyan District, Taizhou City, Zhejiang Province Patentee before: Taizhou Huangyan Sino Mould Co.,Ltd. |