CN108189331A - A kind of mandril carries the deep chamber injection mold of pneumatic jacking-up device - Google Patents
A kind of mandril carries the deep chamber injection mold of pneumatic jacking-up device Download PDFInfo
- Publication number
- CN108189331A CN108189331A CN201810279551.4A CN201810279551A CN108189331A CN 108189331 A CN108189331 A CN 108189331A CN 201810279551 A CN201810279551 A CN 201810279551A CN 108189331 A CN108189331 A CN 108189331A
- Authority
- CN
- China
- Prior art keywords
- mandril
- hole
- thimble
- pneumatic jacking
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B29C45/2602—Mould construction elements
- B29C45/2606—Guiding or centering means
-
- 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 present invention relates to the deep chamber injection mold that a kind of mandril carries pneumatic jacking-up device, including cover half, dynamic model, upper cores, lower mode, mold cavity, top clamping plate, cast gate, sprue bush, injection runner, support block, Bottom clamp plate, top plate and mandril;Mandril includes mandril main body, pneumatic jacking-up device and connection bolt;Pneumatic jacking-up device includes housing, thimble and spring equipped with through-hole;Through-hole is made of trapezoidal hole, the second hole, third hole and lower opening;Housing is equipped with gas port;Third hole inner wall is equipped with air admission hole;Thimble is equipped with airtight section, guide section, crossette and spring guide;Spring pushes crossette to third hole lower edge;Mandril main body is equipped with venthole;Housing, connection bolt and mandril body outer wall are equipped with air slot.The mandril of the present invention is with pneumatic jacking-up device, its thimble is inwardly opened during work, and it is easy to open, and pneumatically makes injecting products and mold separation, white, bursting or top will not deform on injecting products top, without in addition opening up compressed air air flue.
Description
Technical field
The present invention relates to the deep chamber injection moulds that injection mold technology more particularly to a kind of mandril carry pneumatic jacking-up device
Tool.
Background technology
Injection molding is to produce a kind of common method of injecting products, refers specifically to inject the material of heated thawing by high pressure
Mold cavity after cooling and solidifying, obtains formed products.During injection, for make can be smoothly from mold after formed product
It comes off in cavity, generally use ejecting mechanism releases product.In injecting products, the closing of wall shell has bottom, chamber depth size to be more than
The container class such as bucket, box, the case that five times of wall thickness dimension product is known as deep chamber product, due to the packet between deep chamber product and mold cores
It is big to cover power, glues glutinous and suction function in addition, causes deep chamber product stripping difficult;Demoulding for deep chamber product, generally use top
The united method in bar aerating top ejects product.So-called pneumatic jack is the mode in mold(Core)Place's setting air pins, in mandril
Before ejecting product, first deep chamber product is advertised with compressed air and be allowed to first break away from moulds surface, then ejected completely with mandril.Air pins
It is a kind of air flow switch element for the demoulding of mold pneumatic jack, as shown in Figure 7 and Figure 8, during work, compression is empty for existing air pins
Gas enter below the air pins it is internal push thimble 1 ' that the elastic force of spring 2 ' is overcome to open outward, compressed air is from 1 ' top of thimble
It is flowed out with the gap of air pin boss body 3 ', pushes up injecting products, detach injecting products and mold cavity.
In practical applications, when existing air pins are used in deep chamber product stripping, since product is tightly attached in air pins
Surface has resisted air pins, and air pins are difficult to open outward, and increase air pressure easily makes air pins go out core again, damages product
Mold and operating personnel even can be injured, also easily by product top is white, bursting or top deform, it has to be increased on mold cavity de-
The quantity for spray of mould agent is eliminated the top white point hot wind of product with electrothermal blowing, causes great work intensity, efficiency is low, defective products
Rate is high, and synthesis is of high cost.When secondly, using air pins as pneumatic jack, compressed air air flue is in addition opened up in injection mold,
Complicate injection mold.
Invention content
The present invention overcomes the deficiencies in the prior art, provide the deep chamber injection mold that a kind of mandril carries pneumatic jacking-up device,
The mandril of the injection mold carries pneumatic jacking-up device, its thimble is inwardly opened when pneumatic jacking-up device works, and it is easy to open, completely by compression
Air makes injecting products and mold separation, white, bursting or top will not deform on injecting products top, the injection mold is without in addition
Open up compressed air air flue.
The present invention is achieved by the following technical solutions:
A kind of mandril carries the deep chamber injection mold of pneumatic jacking-up device, including adjacent fixed half and moving half;It is equipped in the cover half upper
Mode, dynamic model is interior to be equipped with lower mode, and the cavity that upper cores and lower mode surround is the mold cavity for injection molding;It is described fixed
Top clamping plate is equipped with above mould, is equipped with cast gate among top clamping plate, cast gate has a sprue bush, among sprue bush and in upper cores
Injection runner equipped with connection cast gate and mold cavity;Both sides are equipped with support block below the dynamic model, and dynamic model seat is arranged below in support block
Plate, Bottom clamp plate centre are equipped with perforation, and top plate is equipped among the support block of both sides, and the main mandril of injection molding machine connects across perforation with top plate
It touches;It is provided through that dynamic model and lower mode are airtight to be slidably connected, lead to mold cavity, for ejecting injecting products on the top plate
Mandril, the upper surface of the mandril are concordant with the upper surface of lower mode;
The mandril includes strip, radial section is round, hollow mandril main body;The mandril further include pneumatic jacking-up device and
Connect bolt;The pneumatic jacking-up device includes cylindrical housings, thimble and the spring that axial centre is equipped with circular through hole;The housing
Outer diameter it is identical with the outer diameter of mandril main body;The second hole that the through-hole is sequentially increased by trapezoidal hole and aperture, third hole and under
Hole is connected in sequence from top to bottom;The big mouth down of the trapezoidal hole, the aperture of big mouth is consistent with the aperture in the second hole, should
Trapezoidal hole is equipped with the gas port for leading to third hole along enclosure interior close to housing upper end;Third hole inner wall is equipped with radially logical
To the air admission hole of hull outside;The thimble is arranged in through-hole, and end face is concordant with housing upper surface thereon, and the thimble is by airtight
Section, guide section, crossette and spring guide are connected in sequence;The airtight section of size, shape are consistent and airtight with trapezoidal hole
Cooperation, guide section diameter matches and is slidably connected with the second hole, crossette with lower opening is airtight is slidably connected;It is described connection bolt be
Solid, outer diameter is identical with mandril body outer diameter, and the upper end is stretched into lower opening and connect with housing gas-tight thread, and the end end is from bullet
Spring lower end of the guide rod face suitable distance is so that thimble can move downward;The spring pocket outside spring guide, set on connection bolt
Between upper surface and crossette, and pushing crossette to third hole makes it withstand on third hole lower edge;Top is stretched into the connection bolt lower end
It is connect inside bar main body upper end with its gas-tight thread;
The mandril body top, which is located at, to be equipped with below connection bolt lower face through mandril main body connection mandril body exterior
Venthole;The housing, connection bolt and mandril body outer wall are equipped with the strip air slot of connection air admission hole and venthole.
Further, the mandril main body lower end is equipped with the interface for being connected with external compression air pipeline.Convenient for it is outer
Portion's compressed air pipe connection, compressed air is provided to mandril body interior.
Further, the product of the mold cavity injection molding is deep chamber product.For deep chamber product, present invention demoulding effect
Fruit is especially prominent.
The beneficial effects of the invention are as follows:
1st, pneumatic jacking-up device is set using in the upper end of mandril, gas port is set in the housing of pneumatic jacking-up device and downwards opens
Thimble is guided the compressed air in third hole in the trapezoidal hole above thimble, then lead to mold cavity by gas port, completely
The air pressure of pneumatically makes injecting products and mold separation, and thimble does not eject upwards as traditional air pins in itself,
Injecting products top will not be deformed in white, bursting or top;
2nd, it since the thimble of pneumatic jacking-up device is opened downwards, is not injection molding product and resists, it is easy to open;
3rd, be not in the situation that air pins are gone out core by compressed air due to not having using air pins.
4th, venthole is opened up in the mandril body top of mandril, housing, connection bolt and mandril main body in pneumatic jacking-up device
Outer wall opens up the air slot of connection venthole and pneumatic jacking-up device air admission hole, guides compressed air into air admission hole from mandril body interior
Into inside pneumatic jacking-up device, for injection mold without in addition opening up compressed air air flue, structure is simpler.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the stereogram of the mandril of the present invention.
Fig. 3 is the structure diagram of the mandril of the present invention.
Fig. 4 is the sectional view of the housing of the pneumatic jacking-up device of mandril of the present invention.
Fig. 5 is the structure diagram of the thimble of the pneumatic jacking-up device of mandril of the present invention.
Fig. 6 is the sectional view after the thimble of the pneumatic jacking-up device of mandril of the present invention is opened.
Fig. 7 is the stereogram of existing air pins.
Fig. 8 is the sectional view of existing air pins.
Specific embodiment
As shown in Fig. 1~5, a kind of the embodiment of the present invention, mandril carries the deep chamber injection mold of pneumatic jacking-up device, including phase
Adjacent cover half 1 and dynamic model 2;Upper cores 3 are equipped in the cover half 1, are equipped with lower mode 4 in dynamic model 2, upper cores 3 and lower mode 4 enclose
Into cavity 5 be for injection molding mold cavity 5;The cover half 1 is equipped with top clamping plate 6 above, is set among top clamping plate 6
There is a cast gate 7, cast gate 7 has a sprue bush 8, equipped with connecting penetrating for cast gate 7 and mold cavity 5 among sprue bush 8 and in upper cores 3
Glue runner 9;Both sides are equipped with support block 10 to the dynamic model 2 below, and support block 10 is arranged below Bottom clamp plate 11, is set among Bottom clamp plate 11
There is perforation 12, top plate 13 is equipped among both sides support block 10, the main mandril 14 of injection molding machine passes through perforation 12 to be in contact with top plate 13;Institute
It states and is provided through that dynamic model 2 and lower mode 4 are airtight to be slidably connected, lead to mold cavity 5, for ejecting injecting products on top plate 13
Mandril 15, the upper surface of the mandril 15 are concordant with the upper surface of lower mode 4;
The mandril 15 includes strip, radial section is round, hollow mandril main body 16;The mandril 15 further includes pneumatic jack
Device and connection bolt 17;The pneumatic jacking-up device includes axial centre and is equipped with the cylindrical housings 18 of circular through hole, 19 and of thimble
Spring 20;The outer diameter of the housing 18 is identical with the outer diameter of mandril main body 16;The through-hole is increased successively by trapezoidal hole 21 and aperture
Big the second hole 22, third hole 23 and lower opening 24 is connected in sequence from top to bottom;The big mouth down of the trapezoidal hole 21, big mouth
Aperture it is consistent with the aperture in the second hole 22, which is equipped with close to 18 upper end of housing leads to along inside housing 18 the
The gas port 25 in three holes 23;23 inner wall of third hole is equipped with the air admission hole 26 radially led to outside housing 18;The thimble 19
Be arranged in through-hole, end face is concordant with 18 upper surface of housing thereon, the thimble 19 by airtight section 27, guide section 28,29 and of crossette
Spring guide 30 is connected in sequence;Airtight section of 27 sizes, shape be consistent with trapezoidal hole 21 and air-tight fit, guide section
28 diameters are matched and are slidably connected with the second hole 22, crossette 29 with lower opening 24 is airtight is slidably connected;It is described connection bolt 17 be
Solid, outer diameter is identical with 16 outer diameter of mandril main body, and the upper end is stretched into lower opening 24 and connect with 18 gas-tight thread of housing, the end end
Portion is from 30 lower face suitable distance of spring guide so that thimble 19 can move downward;The spring 20 is sleeved on spring guide 30
Outside, between connection 17 upper surface of bolt and crossette 29, and pushing crossette 29 to third hole 23 makes it withstand under third hole 23
Edge;17 lower end of the connection bolt is stretched into inside 16 upper end of mandril main body to be connect with its gas-tight thread;
16 top of mandril main body is located to be equipped with below 17 lower face of connection bolt connects mandril main body through mandril main body 16
Venthole 31 outside 16;The housing 18, connection bolt 17 and 16 outer wall of mandril main body are equipped with connection air admission hole 26 and outlet
The strip air slot 32 in hole 31.
In the present embodiment, for ease of being connect with external compression air pipeline 33, it is empty that compression is provided to the inside of mandril main body 16
Gas, 16 lower end of mandril main body are equipped with the interface 34 for being used for connecting with external compression air pipeline 33.
In the present embodiment, the product of 5 injection molding of mold cavity is deep chamber product.For deep chamber product, the present invention
Stripping result is especially prominent.
Operation principle:First the interface 34 of mandril main body 16 is connected with external compression air pipeline 33, injection molding machine will melt
Plastic cement be injected into mold cavity 5 by cast gate 7, injection runner 9, after cooling be injecting products.Injection is completed to eject
During injecting products, dynamic model 2 is detached with lower mode 4 with cover half 1, upper cores 3, at this time injecting products be also buckled on lower mode 4 with
It is sticky in the switch for opening external compression air pipeline 33 together, and to 16 inside injecting compressed air of mandril main body, compression is empty
Venthole 31 of the gas through mandril main body 16, air slot 32, housing 18 air admission hole 26 enter third hole 23, overcome the bullet of spring 20
Pushing dynamic crossette 29 drives thimble 19 to move downward, and making airtight section 27 of thimble 19 and 21 inner wall of trapezoidal hole, there are gaps, such as Fig. 6
Shown, compressed air just enters mold cavity 5 from third hole 23 through gas port 25, trapezoidal hole 21, in injecting products and lower mode 4
Between formed positive pressure air cushion layer, detach injecting products and lower mode 4;Later, opening for external compressed air pipe 33 is closed
It closes, air pressure decline, thimble 19 reset under the action of spring 20 in third hole 23, and then, the top plate 13 of injection mold pushes again
Mandril 15 moves upwards, and injecting products are ejected completely.
Since the thimble 19 of the pneumatic jacking-up device on mandril 15 is moved downward when opening, the air pressure of complete pneumatically makes
Injecting products and lower mode 4 detach, and thimble 19 itself does not eject upwards as traditional air pins, therefore will not will be molded
Product top is white, bursting or top deform;After injecting products and the separation of lower mode 4, when with mandril 15, injecting products are ejected completely,
Since injecting products and lower mode 4 are not sticky in together, the ejecting force of mandril 15 also only overcome the gravity of injecting products and
, injecting products top will not be deformed in white, bursting or top.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
The change or replacement expected without creative work, should be covered by the protection scope of the present invention.Therefore, it is of the invention
Protection domain should be determined by the scope of protection defined in the claims.
Claims (3)
1. a kind of mandril carries the deep chamber injection mold of pneumatic jacking-up device, including adjacent fixed half and moving half;It is equipped in the cover half
Upper cores, dynamic model is interior to be equipped with lower mode, and the cavity that upper cores and lower mode surround is the mold cavity for injection molding;It is described
Top clamping plate is equipped with above cover half, cast gate is equipped among top clamping plate, cast gate has sprue bush, sprue bush centre and upper cores
The interior injection runner for being equipped with connection cast gate and mold cavity;Both sides are equipped with support block below the dynamic model, and dynamic model is arranged below in support block
Seat board is equipped with perforation among Bottom clamp plate, and top plate is equipped among the support block of both sides, and the main mandril of injection molding machine passes through perforation and top plate phase
Contact;It is provided through that dynamic model and lower mode are airtight to be slidably connected, lead to mold cavity, for ejecting injecting products on the top plate
Mandril, the upper surface of the mandril is concordant with the upper surface of lower mode;The mandril includes strip, radial section is circle,
Hollow mandril main body;It is characterized in that:
The mandril further includes pneumatic jacking-up device and connection bolt;
The pneumatic jacking-up device includes cylindrical housings, thimble and the spring that axial centre is equipped with circular through hole;Outside the housing
Diameter is identical with the outer diameter of mandril main body;The second hole, third hole and the lower opening that the through-hole is sequentially increased by trapezoidal hole and aperture by
On be connected in sequence down;The big mouth down of the trapezoidal hole, the aperture of big mouth is consistent with the aperture in the second hole, this is trapezoidal
Hole is equipped with the gas port for leading to third hole along enclosure interior close to housing upper end;Third hole inner wall, which is equipped with, radially leads to shell
Air admission hole outside body;The thimble is arranged in through-hole, and end face is concordant with housing upper surface thereon, the thimble by airtight section,
Guide section, crossette and spring guide are connected in sequence;The airtight section of size, shape are consistent with trapezoidal hole and airtight match
Close, guide section diameter matches and is slidably connected with the second hole, crossette with lower opening is airtight is slidably connected;The connection bolt is real
The heart, outer diameter is identical with mandril body outer diameter, and the upper end is stretched into lower opening and connect with housing gas-tight thread, and the end end is from spring
Lower end of the guide rod face suitable distance is so that thimble can move downward;The spring pocket outside spring guide, set on connection bolt on
Between end face and crossette, and pushing crossette to third hole makes it withstand on third hole lower edge;Mandril is stretched into the connection bolt lower end
It is connect inside main body upper end with its gas-tight thread;
The mandril body top, which is located at, to be equipped with below connection bolt lower face through mandril main body connection mandril body exterior
Venthole;The housing, connection bolt and mandril body outer wall are equipped with the strip air slot of connection air admission hole and venthole.
2. a kind of mandril according to claim 1 carries the deep chamber injection mold of pneumatic jacking-up device, it is characterised in that:It is described
Mandril main body lower end is equipped with the interface for being connected with external compression air pipeline.
3. a kind of mandril according to claim 1 carries the deep chamber injection mold of pneumatic jacking-up device, it is characterised in that:It is described
The product of mold cavity injection molding is deep chamber product.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810279551.4A CN108189331A (en) | 2018-04-01 | 2018-04-01 | A kind of mandril carries the deep chamber injection mold of pneumatic jacking-up device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810279551.4A CN108189331A (en) | 2018-04-01 | 2018-04-01 | A kind of mandril carries the deep chamber injection mold of pneumatic jacking-up device |
Publications (1)
Publication Number | Publication Date |
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CN108189331A true CN108189331A (en) | 2018-06-22 |
Family
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CN201810279551.4A Withdrawn CN108189331A (en) | 2018-04-01 | 2018-04-01 | A kind of mandril carries the deep chamber injection mold of pneumatic jacking-up device |
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Cited By (12)
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CN109159384A (en) * | 2018-09-20 | 2019-01-08 | 深圳市捷讯实业发展有限公司 | Accurate automobile grills mold weldless trace injection structure |
CN109159335A (en) * | 2018-09-12 | 2019-01-08 | 刘丽春 | A kind of white injection mould ejection device of anti-drawing of deep-cavity plastic part ejector sleeve recoil limit |
CN109228176A (en) * | 2018-10-31 | 2019-01-18 | 晋江嘉豪模具有限公司 | A kind of degradable PLA injection mold |
CN109605679A (en) * | 2018-12-27 | 2019-04-12 | 苏州东颖精密模具有限公司 | A kind of mold for the retainer for preventing injection molding from blocking |
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US20210213661A1 (en) * | 2020-01-13 | 2021-07-15 | Aptiv Technologies Limited | Abrupt ejector plate stop |
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CN113619033A (en) * | 2021-08-20 | 2021-11-09 | 江苏星科精密模具有限公司 | Easy demoulding car light injection mold |
CN115503196A (en) * | 2022-09-27 | 2022-12-23 | 深圳市优瑞康模具科技有限公司 | Injection mold ejection mechanism and injection mold |
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CN109159335A (en) * | 2018-09-12 | 2019-01-08 | 刘丽春 | A kind of white injection mould ejection device of anti-drawing of deep-cavity plastic part ejector sleeve recoil limit |
CN109159384B (en) * | 2018-09-20 | 2023-06-13 | 深圳市捷讯实业发展有限公司 | No weld mark injection structure of accurate car grid mould |
CN109159384A (en) * | 2018-09-20 | 2019-01-08 | 深圳市捷讯实业发展有限公司 | Accurate automobile grills mold weldless trace injection structure |
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CN111152417B (en) * | 2020-03-02 | 2021-07-02 | 滁州职业技术学院 | Injection mold for cylinder head cover of automobile engine |
CN111152417A (en) * | 2020-03-02 | 2020-05-15 | 滁州职业技术学院 | Injection mold for cylinder head cover of automobile engine |
CN112248389A (en) * | 2020-10-13 | 2021-01-22 | 孙超月 | Injection mold for producing high-strength accessories |
CN112248389B (en) * | 2020-10-13 | 2022-08-16 | 浙江海卫科技股份有限公司 | Injection mold for producing high-strength accessories |
CN112371946A (en) * | 2020-10-20 | 2021-02-19 | 苏州恒荣精密机电有限公司 | Thin-wall part die |
CN113021797A (en) * | 2021-04-27 | 2021-06-25 | 浙江天能精工科技有限公司 | Quick demoulding device of gas cap for injection mold production |
CN113021797B (en) * | 2021-04-27 | 2022-05-10 | 浙江天能精工科技有限公司 | Quick demoulding device of gas cap for injection mold production |
CN113320090A (en) * | 2021-05-28 | 2021-08-31 | 上海华聚橡塑制品有限公司 | Production injection mold of reagent tray |
CN113320090B (en) * | 2021-05-28 | 2022-08-30 | 上海华聚橡塑制品有限公司 | Production injection mold of reagent tray |
CN113619033B (en) * | 2021-08-20 | 2023-06-06 | 江苏星科精密模具有限公司 | Easily-demoulded automobile lamp injection mold |
CN113619033A (en) * | 2021-08-20 | 2021-11-09 | 江苏星科精密模具有限公司 | Easy demoulding car light injection mold |
CN115503196A (en) * | 2022-09-27 | 2022-12-23 | 深圳市优瑞康模具科技有限公司 | Injection mold ejection mechanism and injection mold |
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