CN108454034B - Bent pin secondary core-pulling mechanism of refrigerator door frame injection mold - Google Patents
Bent pin secondary core-pulling mechanism of refrigerator door frame injection mold Download PDFInfo
- Publication number
- CN108454034B CN108454034B CN201810412902.4A CN201810412902A CN108454034B CN 108454034 B CN108454034 B CN 108454034B CN 201810412902 A CN201810412902 A CN 201810412902A CN 108454034 B CN108454034 B CN 108454034B
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- China
- Prior art keywords
- inclined top
- sliding block
- seat
- supporting seat
- hole
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- 238000002347 injection Methods 0.000 title claims abstract description 9
- 239000007924 injection Substances 0.000 title claims abstract description 9
- 238000005452 bending Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- 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
- B29C45/401—Ejector pin constructions or mountings
Landscapes
- 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 core pulling mechanism of a bent pin of an injection mold of a refrigerator door frame, which comprises a slide block supporting seat and an inclined guide post, wherein a slide block is arranged on the slide block supporting seat, an inclined guide post hole is formed in the slide block, an inclined top seat is fixedly arranged on the slide block supporting seat, an inclined top guide chute is formed in the inclined top seat, an inclined top rod hole forming a certain angle with the upper surface of the slide block supporting seat is also formed in the slide block, an inclined top rod is arranged in the inclined top rod hole, one end of the inclined top rod is provided with an inclined top, an inclined top guide slide seat is arranged at the other end of the inclined top rod, and the inclined top guide slide seat is slidably arranged on the inclined top guide chute; the end part of the sliding block, which is close to the inclined top, is provided with a sliding block core, a movable die insert is arranged on the movable die, and the end part of the movable die insert, which is close to the inclined top, is provided with an insert core; the fixed die is also fixedly provided with a bending pin, the end part of the bending pin, which is far away from the fixed die, is made into an elbow, the elbow is parallel to the inclined guide post, the sliding block supporting seat is provided with a bending pin hole, and the bending pin penetrates through the bending pin hole. The invention realizes core pulling at different angles through a pair of dies.
Description
Technical Field
The invention relates to a core pulling mechanism, in particular to a bent pin secondary core pulling mechanism of an injection mold of a refrigerator door frame, and belongs to the technical field of injection molds.
Background
The refrigerator door frame 8 shown in fig. 3 (the door frame is too large in size, and only a partial structure of the core-pulling part is cut), and the core-pulling demolding is difficult to realize in a pair of molds due to the structures such as ribs 81, hooks 82, hooks 83 and the like, and the core-pulling angles of the structures are different. So currently the door frame is usually made of lead alloy.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a multi-angle core-pulling mechanism for a refrigerator door frame injection mold.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the secondary core pulling mechanism of the bent pin of the refrigerator door frame injection mold comprises a sliding block supporting seat and an inclined guide post, wherein the sliding block supporting seat is slidably arranged on a movable mold, the inclined guide post is fixed on a fixed mold, a sliding block is slidably arranged on the sliding block supporting seat, an inclined guide post hole is formed in the sliding block, the inclined guide post is inserted into the inclined guide post hole, the secondary core pulling mechanism is characterized in that an inclined top seat is fixedly arranged on the sliding block supporting seat, an inclined top guide chute is formed in the inclined top seat, an inclined top rod hole which forms a certain angle with the upper surface of the sliding block supporting seat is also formed in the sliding block, an inclined top rod is arranged in the inclined top rod hole, an inclined top guide slide seat is arranged at the other end of the inclined top rod, and the inclined top guide slide seat is slidably arranged on the inclined top guide chute; the end part of the sliding block, which is close to the inclined top, is provided with a sliding block core, a movable die insert is arranged on the movable die, and the end part of the movable die insert, which is close to the inclined top, is provided with an insert core; the fixed die is characterized in that a bending pin is fixedly arranged on the fixed die, an elbow is formed at the end part, far away from the fixed die, of the bending pin, the elbow is parallel to the inclined guide post, a bending pin hole is formed in the sliding block supporting seat, and the bending pin penetrates through the bending pin hole.
As a further optimization of the above technical solution: and the surface of the bent pin and the bent pin hole are embedded with wear-resistant inserts.
The core pulling mechanism drives the slide block and the inclined ejector rod to firstly core the ribs and the clamping hook parts of the plastic part through the inclined guide post in the mold opening process, and then synchronously moves the slide block, the inclined ejector rod, the slide block supporting seat and the inclined ejector seat to the right through the joint action of the inclined guide post and the elbow of the bent pin, so that the inclined ejector leaves the bent hook part of the plastic part, and the ejector mechanism of the injection molding machine is convenient to eject the plastic part, namely core pulling at different angles is realized through a pair of molds.
Drawings
Fig. 1 is a schematic diagram of an assembled structure of the present invention.
Fig. 2 is a schematic structural view of the oblique top core pulling mechanism of fig. 1.
Fig. 3 is a schematic view of a partially enlarged structure of a core-pulling portion of the plastic part in fig. 1.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description. As shown in fig. 1-3, the secondary core pulling mechanism for the bent pin of the injection mold of the refrigerator door frame comprises a sliding block supporting seat 5 and an inclined guide post 2, wherein the sliding block supporting seat 5 is slidably arranged on a movable mold, the sliding block 3 is fixedly arranged on the sliding block supporting seat 5, an inclined guide post hole 33 is formed in the sliding block 3, the inclined guide post 2 is inserted into the inclined guide post hole 33, an inclined top seat 6 is fixedly arranged on the sliding block supporting seat 5, an inclined top guide chute 61 is formed in the inclined top seat 6, and an inclined top rod hole 32 which forms a certain angle with the upper surface of the sliding block supporting seat 5 is formed in the sliding block 3, namely the inclined top rod hole 32 has a certain inclination, and the inclination is set according to a core pulling angle. The oblique ejector rod hole 32 is internally provided with an oblique ejector rod 4, one end of the oblique ejector rod 4 is provided with an oblique ejector rod 42, the other end of the oblique ejector rod 4 is provided with an oblique ejector guide sliding seat 41, the oblique ejector guide sliding seat 41 is slidably arranged on the oblique ejector guide sliding groove 61, and the oblique ejector rod 42 enables the outer contour of a clamping hook 82 and ribs 81 of a plastic part to be formed. The end part of the sliding block 3, which is close to the inclined top 42, is provided with a sliding block core 31, and the sliding block core 31 enables the clamping hook 82 of the plastic part to be molded inside. The movable mould is provided with a movable mould insert 7, an insert core 71 is arranged at the end part of the movable mould insert 7, which is close to the inclined top 42, and the insert core 71 enables a hook 83 of the plastic part to be molded inside. And a bending pin 1 is fixedly arranged on the fixed die, and an elbow 11 is formed at the end part, far away from the fixed die, of the bending pin 1, wherein the elbow 11 is parallel to the inclined guide post 2. The slider supporting seat 5 is provided with a bending pin hole 51, and the bending pin 1 penetrates through the bending pin hole 51 and the movable die.
As a further optimization of the above technical solution: the surface of the bent pin 1 and the bent pin hole 51 are embedded with wear-resistant inserts. The maintenance cost is lower, the action stability is improved, and the service life of the die is prolonged.
The working principle of the invention is as follows: when the mould is opened, the moving mould drives the slide block supporting seat 5, the slide block 3 and the inclined top seat 6 to move downwards, as shown in fig. 1, and simultaneously under the action of the inclined guide post 2, the slide block 3 moves rightwards relative to the slide block supporting seat 5, and the slide block core 31 on the slide block 3 starts to separate from the clamping hook 82 of the plastic part. In the process, as the inclined ejector rod hole 32 has inclination, the inclined ejector rod 4 starts to move downwards under the combined action of the inclined ejector rod hole 32 and the inclined ejector guide sliding seat 41 so as to realize core pulling of the inclined ejector 42 on the rib 81 of the plastic part. Until the slide block supporting seat 5 reaches the position of the elbow 11 of the bending pin 1, the core pulling of the rib 81 and the clamping hook 82 of the plastic part is finished, and the inclined top 42 does not touch the bending hook 83.
Then the moving die continues to open, the moving die drives the sliding block supporting seat 5, the sliding block 3 and the inclined top seat 6 to continuously move downwards, and the sliding block supporting seat 5 drives the inclined top seat 6 and the inclined top rod 4 to start to move rightwards while moving downwards under the action of the elbow 11 of the bent pin 1, so that the inclined top 42 leaves the bent hook 83 of the plastic part at the horizontal position. In the process, the sliding block 3 continues to move rightwards under the action of the inclined guide post 2, and the elbow 11 is parallel to the inclined guide post 2, so that the sliding block 3 and the sliding block supporting seat 5 move rightwards synchronously, and no relative movement is generated among the sliding block 3, the inclined ejector rod 4, the sliding block supporting seat 5 and the inclined ejector seat 6 in the process.
Finally, the plastic part is vertically ejected through an ejection mechanism of the injection molding machine, so that the insert core 71 is separated from the hook 83 of the plastic part, core pulling of the hook 83 part is realized, and the whole core pulling and demolding action is completed.
The foregoing has described in detail preferred embodiments of the invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical schemes which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the technical personnel in the field according to the conception of the invention are within the protection scope of the invention.
Claims (2)
1. The secondary core pulling mechanism comprises a sliding block supporting seat (5) which is slidably arranged on a movable die and an inclined guide post (2) which is fixed on a fixed die, wherein a sliding block (3) is slidably arranged on the sliding block supporting seat (5), an inclined guide post hole (33) is formed in the sliding block (3), and the inclined guide post (2) is inserted into the inclined guide post hole (33), and is characterized in that the secondary core pulling mechanism is arranged on the sliding block supporting seat (5);
the secondary core pulling mechanism comprises an inclined top seat (6) fixedly mounted on the sliding block supporting seat (5), an inclined top guide sliding groove (61) is formed in the inclined top seat (6), an inclined top rod hole (32) which is at a certain angle with the upper surface of the sliding block supporting seat (5) is formed in the sliding block (3), an inclined top rod (4) is arranged in the inclined top rod hole (32), an inclined top (42) is formed at one end of the inclined top rod (4), an inclined top guide sliding seat (41) is mounted at the other end of the inclined top rod (4), and the inclined top guide sliding seat (41) is slidably mounted on the inclined top guide sliding groove (61); a sliding block core (31) is arranged at the end part of the sliding block (3) close to the inclined top (42), a movable die insert (7) is arranged on the movable die, and an insert core (71) is arranged at the end part of the movable die insert (7) close to the inclined top (42); the fixed die is characterized in that a bending pin (1) is fixedly arranged on the fixed die, the bending pin (1) is far away from the end part of the fixed die to form an elbow (11), the elbow (11) is parallel to the inclined guide post (2), a bending pin hole (51) is formed in the sliding block supporting seat (5), and the bending pin (1) penetrates through the bending pin hole (51).
2. The secondary core pulling mechanism for the bent pin of the refrigerator door frame injection mold according to claim 1 is characterized in that wear-resistant inserts are inlaid on the surface of the bent pin (1) and the bent pin hole (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810412902.4A CN108454034B (en) | 2018-05-03 | 2018-05-03 | Bent pin secondary core-pulling mechanism of refrigerator door frame injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810412902.4A CN108454034B (en) | 2018-05-03 | 2018-05-03 | Bent pin secondary core-pulling mechanism of refrigerator door frame injection mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108454034A CN108454034A (en) | 2018-08-28 |
| CN108454034B true CN108454034B (en) | 2024-03-29 |
Family
ID=63214466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810412902.4A Active CN108454034B (en) | 2018-05-03 | 2018-05-03 | Bent pin secondary core-pulling mechanism of refrigerator door frame injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108454034B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262988B (en) * | 2018-09-06 | 2023-09-01 | 临海伟星新型建材有限公司 | Automatic demolding mold for elbow pipe fitting |
| CN110154334B (en) * | 2019-06-04 | 2021-08-24 | 浙江台州美多模具有限公司 | Multi-direction core-pulling mechanism for sliding block of injection mold |
| CN110450360B (en) * | 2019-08-27 | 2021-07-09 | 浙江日成模具有限公司 | Injection mold |
| CN112706376A (en) * | 2020-12-25 | 2021-04-27 | 佛山职业技术学院 | Injection mold with low space occupancy rate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201268067Y (en) * | 2008-09-17 | 2009-07-08 | 广东东亚电器有限公司 | Injection mold with mechanical linking secondary loose core mechanism |
| CN102218804A (en) * | 2010-04-13 | 2011-10-19 | 台州市黄岩大盛模塑有限公司 | Secondary core puller for inclined fixed hole of fog lamp shell die for vehicle |
| CN206796447U (en) * | 2017-05-17 | 2017-12-26 | 长沙申大科技集团股份有限公司 | A kind of mould |
| CN206796436U (en) * | 2017-04-11 | 2017-12-26 | 宁波神通模塑有限公司 | A kind of core-pulling mechanism of injection mold |
| CN208601861U (en) * | 2018-05-03 | 2019-03-15 | 浙江台州美多模具有限公司 | The curved pin secondary core-pulling mechanism of refrigerator doorframe injection mold |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207256761U (en) * | 2017-08-16 | 2018-04-20 | 上海奔旭精密模具有限公司 | A kind of injection mold that ejecting mechanism is walked with sliding block inclined |
-
2018
- 2018-05-03 CN CN201810412902.4A patent/CN108454034B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201268067Y (en) * | 2008-09-17 | 2009-07-08 | 广东东亚电器有限公司 | Injection mold with mechanical linking secondary loose core mechanism |
| CN102218804A (en) * | 2010-04-13 | 2011-10-19 | 台州市黄岩大盛模塑有限公司 | Secondary core puller for inclined fixed hole of fog lamp shell die for vehicle |
| CN206796436U (en) * | 2017-04-11 | 2017-12-26 | 宁波神通模塑有限公司 | A kind of core-pulling mechanism of injection mold |
| CN206796447U (en) * | 2017-05-17 | 2017-12-26 | 长沙申大科技集团股份有限公司 | A kind of mould |
| CN208601861U (en) * | 2018-05-03 | 2019-03-15 | 浙江台州美多模具有限公司 | The curved pin secondary core-pulling mechanism of refrigerator doorframe injection mold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108454034A (en) | 2018-08-28 |
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