CN110154327B - Blind core-pulling mechanism of injection mold - Google Patents

Blind core-pulling mechanism of injection mold Download PDF

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Publication number
CN110154327B
CN110154327B CN201910556965.1A CN201910556965A CN110154327B CN 110154327 B CN110154327 B CN 110154327B CN 201910556965 A CN201910556965 A CN 201910556965A CN 110154327 B CN110154327 B CN 110154327B
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Prior art keywords
block
insert
hidden
sliding block
groove
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CN201910556965.1A
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CN110154327A (en
Inventor
杨炯
邓建林
王建法
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Zhejiag Taizhou Meiduo Mould Co ltd
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Zhejiag Taizhou Meiduo Mould Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/2602Mould construction elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/33Moulds having transversely, e.g. radially, movable mould parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/44Removing or ejecting moulded articles for undercut articles
    • B29C45/4435Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means

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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 hidden core pulling mechanism of an injection mold, which comprises an inclined guide post, a slide block and a hidden pulling insert block, wherein the inclined guide post is fixed on a fixed mold, the slide block and the hidden pulling insert block are arranged on a movable mold, a transmission block is connected between the bottom of the slide block and the bottom of the hidden pulling insert block, one end of the transmission block connected with the hidden pulling insert block is provided with a guide slide block which inclines downwards, the guide slide block is provided with inclined slide grooves, the slide grooves are positioned on the front surface and the back surface of the guide slide block, the bottom of the hidden pulling insert block is provided with an installation groove matched with the guide slide block, two sides of the notch of the installation groove are inwards protruded to form a clamping block, the guide slide block is positioned in the installation groove, and the clamping block is positioned in the slide groove. Compared with the prior art, the invention utilizes the inclined chute to convert the horizontal motion of the transmission block into the inclined downward core-pulling motion of the hidden drawing insert, thereby ensuring the stable demoulding of the die and more convenient maintenance of the hidden drawing insert.

Description

Blind core-pulling mechanism of injection mold
Technical Field
The invention relates to a hidden core pulling mechanism of an injection mold, belonging to the technical field of injection molds.
Background
In order to achieve artistic and fashionable effects, an air conditioner hanging machine is usually designed into a curved surface shape on a hanging machine middle frame product. Because the shape has particularity, the corresponding injection mold has high design difficulty, a complex structure and high cost, and the product has arc-shaped back-off, so that the demolding is difficult, the yield is low, and the production efficiency is difficult to improve.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a dark core-pulling mechanism of an injection mold.
The technical scheme adopted by the invention for realizing the purpose is as follows:
the hidden core pulling mechanism of the injection mold comprises an inclined guide pillar, a sliding block and a hidden pulling insert, wherein the inclined guide pillar is fixed on a fixed mold, the sliding block and the hidden pulling insert are installed on a movable mold, a transmission block is connected between the bottom of the sliding block and the bottom of the hidden pulling insert, a guide sliding block which is inclined downwards is manufactured at one end, connected with the hidden pulling insert, of the transmission block, a sliding groove which is inclined is manufactured on the guide sliding block, the sliding groove is located on the front surface and the back surface of the guide sliding block, a mounting groove matched with the guide sliding block is manufactured at the bottom of the hidden pulling insert, clamping blocks are formed by inwards protruding two sides of a notch of the mounting groove, the mounting groove and the clamping blocks are all inclined, the guide sliding block is located in the mounting groove, and the clamping blocks are located in the sliding groove.
As a further optimization of the above technical solution: the die is characterized in that an insert pin is fixed on the movable die, an ejector pin is fixed at the end of the insert pin, a pin through hole is formed in the hidden drawing insert block, the ejector pin is located in the pin through hole, and the end surface of the head of the ejector pin and the upper surface of the hidden drawing insert block are located on the same plane during die assembly.
As a further optimization of the above technical solution: the bottom of the hidden drawing insert is also provided with an arc-shaped groove matched with the insert pin.
As a further optimization of the above technical solution: the transmission block with the one end system that the slider is connected has the boss, the right side system of boss has the draw-in groove, the bottom cooperation of slider is made recess and lug.
As a further optimization of the above technical solution: the bottom of the sliding block is fixedly provided with a fixed block, one end of the fixed block extends out of the sliding block, the part of the fixed block extending out of the sliding block is provided with an inclined guide post hole, and the inclined guide post penetrates through the inclined guide post hole during die assembly.
As a further optimization of the above technical solution: the transmission block is also provided with a strip-shaped through hole.
As a further optimization of the above technical solution: the bottom of the sliding block and the bottom of the hidden drawing insert are connected with a supporting block, a square groove matched with the supporting block is formed in the bottom of the hidden drawing insert, an inclined surface is formed at one end, matched with the square groove, of the supporting block, and a sliding guide inclined surface is correspondingly formed in the square groove.
Compared with the prior art, the core pulling device has the advantages that the structure is simple, the production efficiency is high, the manufacturing cost is low, the horizontal motion of the transmission block is converted into the downward core pulling motion of the hidden drawing insert by utilizing the inclined sliding groove, the stable die stripping of the die is ensured, the hidden drawing insert is more convenient to maintain, and meanwhile, the ejector pin is additionally arranged on the hidden drawing insert, so that the phenomenon that the die stripping fails due to overlarge packing force when the hidden drawing insert is used for directly pulling the core is avoided.
Drawings
FIG. 1 is a side view of the present invention.
Fig. 2 is a schematic top view of the present invention.
Fig. 3 is a schematic perspective view of the transmission block of the present invention.
Fig. 4 is a schematic perspective view of the dark extraction insert of the present invention.
Fig. 5 is a schematic bottom view of the structure of fig. 4.
Detailed Description
The invention is further described with reference to the following figures and detailed description. As shown in fig. 1-5, the blind core-pulling mechanism of the injection mold comprises an inclined guide post 1, a slide block 2 and a blind core-pulling insert 3, the inclined guide post 1 is fixed on the fixed die, the slide block 2 and the hidden drawing insert 3 are arranged on the movable die, a transmission block 4 is connected between the slide block 2 and the hidden drawing insert 3, as shown in fig. 3, one end of the transmission block 4 connected with the blind insert 3 is provided with a guide slide block 41, the guide sliding block 41 is provided with sliding grooves 411 which are obliquely arranged, the sliding grooves 411 are positioned on the front and back surfaces of the guide sliding block 41, the bottom of the hidden drawing insert 3 is provided with a mounting groove 31 matched with the guide sliding block 41, two sides of the notch of the mounting groove 31 are inwards protruded to form a clamping block 32, as shown in fig. 5, the mounting groove 31 and the latch 32 are both disposed obliquely, the guide slider 41 is located in the mounting groove 31, and the latch 32 is located in the sliding slot 411. During demolding, the inclined sliding groove 411 converts the horizontal motion of the transmission block 4 into the inclined downward core pulling motion of the hidden drawing insert 3, so that the product is separated from the hidden drawing insert 3.
In the above technical scheme: an insert pin 5 is fixed on the movable die, an ejector pin 6 is fixed at the end of the insert pin 5, a pin penetrating through hole is formed in the hidden extraction insert 3, the ejector pin 6 is located in the pin penetrating through hole, and the end surface of the head of the ejector pin 6 and the upper surface of the hidden extraction insert 3 are located on the same plane during die assembly so as to avoid redundant hole opening of a product. The thimble 6 is fixed on the movable mould through the insert pin 5, and the installation and the disassembly are more convenient. During demolding, the ejector pin 6 is fixed, the hidden drawing insert 3 moves downwards in a slant mode, the ejector pin 6 and the hidden drawing insert 3 move relatively, the head of the ejector pin 6 gradually penetrates through the upper surface of the hidden drawing insert 3 to eject a product, the product is separated from the hidden drawing insert 3, and the phenomenon that demolding fails due to overlarge wrapping force of the product when the hidden drawing insert 3 is used for directly drawing the core is avoided.
In the above technical scheme: as shown in fig. 4, the bottom of the blind insert 3 is further formed with an arc-shaped groove 33 which is matched with the insert pin 5. The arc-shaped groove 33 avoids the installation groove 31, and when the hidden drawing insert 3 obliquely draws core downwards to touch the insert pin 5, the arc-shaped groove 33 is just attached to the insert pin 5.
In the above technical scheme: as shown in fig. 3, a boss 42 is formed at one end of the transmission block 4 connected to the slider 2, a clamping groove 43 is formed at the right side of the boss 42, and a groove and a protrusion are formed at the bottom of the slider 2 in a matching manner. The boss 42 is matched with the groove, and the clamping groove 43 is matched with the boss, so that the sliding block 2 is driven to synchronously move when moving.
In the above technical scheme: the bottom of the sliding block 2 is fixedly provided with a fixed block 7, one end of the fixed block 7 extends out of the sliding block 2, the part of the fixed block 7 extending out of the sliding block 2 is provided with an inclined guide post hole, and the inclined guide post 1 penetrates through the inclined guide post hole during die assembly.
In the above technical scheme: the transmission block 4 is also provided with a strip-shaped through hole 44, so that an ejector rod on the ejector plate can conveniently penetrate through the movable mold and the transmission block 4.
In the above technical scheme: as shown in fig. 2, a supporting block 8 is further connected between the bottom of the slider 2 and the bottom of the hidden drawing insert 3, fig. 2 shows an embodiment of an arrangement of the driving block 4 and the supporting block 8, and as shown in fig. 4, the bottom of the hidden drawing insert 3 is provided with a square groove 34 matched with the supporting block 8. The end of the supporting block 8, which is matched with the square groove 34, is made into an inclined surface, as shown in fig. 5, the square groove 34 is correspondingly made with a sliding guiding inclined surface 341. The supporting block 8 plays a role in supporting and guiding the hidden drawing insert 3.
The working process of the invention is as follows, after the injection molding is finished, the fixed die is separated, the fixed die drives the inclined guide post 1 to move upwards, the slide block 2 is driven by the inclined guide post 1 to move horizontally towards the core-pulling direction of the slide block 2, the transmission block 4 moves synchronously with the slide block 2, and meanwhile, the fixture block 32 on the hidden drawing insert block 3 performs core-pulling movement downwards along the inclined chute 411. In the process, because the thimble 6 is fixed, when the hidden drawing insert 3 draws core downwards in an inclined manner, the thimble 6 and the hidden drawing insert 3 generate relative motion, and the head of the thimble 6 gradually penetrates through the upper surface of the hidden drawing insert 3 to eject the product, so that the product is partially separated from the hidden drawing insert 3. The fixture block 32 continues to perform downward core pulling movement along the sliding slot 411 until the product is completely separated from the blind insert 3, and the core pulling is completed.
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 (3)

1. A hidden core pulling mechanism of an injection mold comprises an inclined guide post (1), a sliding block (2) and a hidden core pulling insert (3), wherein the inclined guide post (1) is fixed on a fixed mold, the sliding block (2) and the hidden core pulling insert (3) are installed on a movable mold, the hidden core pulling mechanism is characterized in that a transmission block (4) is connected between the bottom of the sliding block (2) and the bottom of the hidden core pulling insert (3), a downward-inclined guide sliding block (41) is arranged at one end, connected with the hidden core pulling insert (3), of the transmission block (4), a sliding groove (411) which is obliquely arranged is formed in the guide sliding block (41), the sliding groove (411) is positioned on the front surface and the back surface of the guide sliding block (41), an installation groove (31) matched with the guide sliding block (41) is formed in the bottom of the hidden core pulling insert (3), a clamping block (32) is formed by inwards protruding two sides of a notch of the installation groove (31), and the installation groove (31) and the clamping block (32) are obliquely arranged, the guide sliding block (41) is positioned in the mounting groove (31), and the fixture block (32) is positioned in the sliding groove (411);
an insert pin (5) is fixed on the movable die, an ejector pin (6) is fixed at the end of the insert pin (5), a pin through hole is formed in the hidden extraction insert (3), the ejector pin (6) is located in the pin through hole, and the end surface of the head of the ejector pin (6) and the upper surface of the hidden extraction insert (3) are located on the same plane when die assembly is carried out;
a boss (42) is arranged at one end of the transmission block (4) connected with the sliding block (2), a clamping groove (43) is arranged at the right side of the boss (42), and a groove and a convex block are matched and arranged at the bottom of the sliding block (2);
a fixed block (7) is fixed at the bottom of the sliding block (2), one end of the fixed block (7) extends out of the sliding block (2), an inclined guide post hole is formed in the part of the fixed block (7) extending out of the sliding block (2), and the inclined guide post (1) penetrates through the inclined guide post hole during die assembly;
the bottom of the sliding block (2) and the bottom of the hidden drawing insert (3) are connected with a supporting block (8), a square groove (34) matched with the supporting block (8) is formed in the bottom of the hidden drawing insert (3), an inclined surface is formed at one end, matched with the square groove (34), of the supporting block (8), and a guide sliding inclined surface (341) is correspondingly formed in the square groove (34).
2. A blind core-pulling mechanism for injection mold according to claim 1, characterized in that the bottom of the blind insert (3) is further formed with an arc-shaped groove (33) engaged with the insert pin (5).
3. A blind core-pulling mechanism for injection mold according to claim 1, characterized in that the driving block (4) is further formed with a through hole (44) in a bar shape.
CN201910556965.1A 2019-06-25 2019-06-25 Blind core-pulling mechanism of injection mold Active CN110154327B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201910556965.1A CN110154327B (en) 2019-06-25 2019-06-25 Blind core-pulling mechanism of injection mold

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CN110154327A CN110154327A (en) 2019-08-23
CN110154327B true CN110154327B (en) 2021-12-14

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110480954B (en) * 2019-09-29 2021-05-11 浙江台州美多模具有限公司 Double-mold-cavity injection mold of air conditioner hanging machine housing
CN110480953B (en) * 2019-09-29 2021-05-11 浙江台州美多模具有限公司 Double-mold-cavity injection mold's mode locking mechanism of loosing core

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KR20030020562A (en) * 2001-09-01 2003-03-10 한라공조주식회사 Die for injection molding
KR20090123689A (en) * 2008-05-28 2009-12-02 이원식 Separated slide core for injection mold
CN201419451Y (en) * 2009-05-21 2010-03-10 上海天海电子有限公司 Die core pulling mechanism
CN103029268A (en) * 2011-10-10 2013-04-10 汉达精密电子(昆山)有限公司 Side core-pulling mechanism

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CN201353869Y (en) * 2008-12-12 2009-12-02 上海瀚氏模具成型有限公司 Ejecting device for mold
CN103934989B (en) * 2014-04-21 2016-03-09 滨海模塑集团有限公司 The interior barb demoulding mechanism of automobile lamp injection mold
CN105881787A (en) * 2014-12-29 2016-08-24 宁波东昊汽车部件有限公司 Angle pin mechanism for mold
CN206913615U (en) * 2017-05-17 2018-01-23 宁波斯穆汽车模具有限公司 Side slide core-pulling mechanism
CN207841979U (en) * 2017-11-30 2018-09-11 华域视觉科技(上海)有限公司 Prevent the structure of BMC products overlap at mold ejection mechanism
CN108527786B (en) * 2018-06-06 2023-09-22 珠海格力精密模具有限公司 Injection mold and time delay core pulling mechanism thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030020562A (en) * 2001-09-01 2003-03-10 한라공조주식회사 Die for injection molding
KR20090123689A (en) * 2008-05-28 2009-12-02 이원식 Separated slide core for injection mold
CN201419451Y (en) * 2009-05-21 2010-03-10 上海天海电子有限公司 Die core pulling mechanism
CN103029268A (en) * 2011-10-10 2013-04-10 汉达精密电子(昆山)有限公司 Side core-pulling mechanism

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Denomination of invention: Hidden core pulling mechanism of injection mould

Effective date of registration: 20220727

Granted publication date: 20211214

Pledgee: Industrial Commercial Bank of China Ltd. Taizhou Huangyan branch

Pledgor: ZHEJIAG TAIZHOU MEIDUO MOULD Co.,Ltd.

Registration number: Y2022330001541