CN218315338U - Core mould for large-curvature continuous cavity composite material part and forming mould thereof - Google Patents

Core mould for large-curvature continuous cavity composite material part and forming mould thereof Download PDF

Info

Publication number
CN218315338U
CN218315338U CN202222005201.3U CN202222005201U CN218315338U CN 218315338 U CN218315338 U CN 218315338U CN 202222005201 U CN202222005201 U CN 202222005201U CN 218315338 U CN218315338 U CN 218315338U
Authority
CN
China
Prior art keywords
die
split
core
detachably connected
assembly
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.)
Active
Application number
CN202222005201.3U
Other languages
Chinese (zh)
Inventor
宋丽丽
崔小雨
李平
张保森
李险峰
程晓宁
马新伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AVIC Huiyang Aviation Propeller Co Ltd
Original Assignee
AVIC Huiyang Aviation Propeller Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AVIC Huiyang Aviation Propeller Co Ltd filed Critical AVIC Huiyang Aviation Propeller Co Ltd
Priority to CN202222005201.3U priority Critical patent/CN218315338U/en
Application granted granted Critical
Publication of CN218315338U publication Critical patent/CN218315338U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The utility model discloses a mandrel that big curvature cavity combined material finished piece in succession was used and forming die thereof, this mandrel include the mandrel body, and the mandrel body includes mandrel upper segment, mandrel interlude and the mandrel hypomere that superposes in proper order from top to bottom. The core mould body adopts a sectional design as an upper core mould section, a middle core mould section and a lower core mould section, so that after the wind tunnel blade is formed, the middle core mould section is firstly drawn out from a formed mould cavity, and a space is reserved for the upper core mould section and the lower core mould section so as to facilitate the drawing out of the upper core mould section and the lower core mould section from the formed cavity. Therefore, the core mold can be smoothly taken out after the blade is molded, and can be repeatedly used for many times. And the molding die includes: arrange in proper order from top to bottom and can dismantle last mould subassembly, the last cutting die of connection, two middle moulds, cutting die, lower mould subassembly down, go up the mould subassembly with the lower mould subassembly both ends can be dismantled respectively and be connected with the end plate. The mould is of a detachable structure, and the core mould is easy to take out.

Description

Core mould for large-curvature continuous cavity composite material part and forming mould thereof
Technical Field
The utility model relates to a material finished piece forming die technical field, more specifically the mandrel that continuous cavity combined material finished piece of big curvature was used and forming die thereof that says so.
Background
The wind tunnel blade is a large-curvature continuous cavity composite material part, the traditional rigid core die cannot meet the cavity forming requirements of variable cross section and torsional cross section of the blade, the size of the cross section of the cavity is greatly changed, and the common core die cannot ensure that the core die can be smoothly taken out of the blade after the blade is formed.
At present, the domestic cavity composite material is formed by adopting silica gel air bag internal expansion and meltable core mould and memory rubber air bag forming technology. The silica gel air bag is only suitable for the built-in air bag and is not suitable for directly paving a prepreg layer on the air bag; the meltable core mold can play a supporting role, but for a multi-cavity composite material product, the forming pressure cannot be applied to the prepreg cloth layer between the cavities, so that the forming quality is difficult to ensure; memory rubber gasbag is as a new material, can reach the requirement of providing pressure to the product is inside, also is convenient for layer simultaneously and spreads and the drawing of patterns, but wind tunnel blade cavity is long and narrow, and is in large quantity, uses memory rubber gasbag cost higher, and the technical difficulty is big, is not suitable for wind tunnel blade's shaping manufacturing.
Therefore, the problem to be solved by the skilled person is how to provide a core mold for a large curvature continuous cavity composite material part and a forming mold thereof, wherein the core mold can be taken out smoothly after the blade is formed, and the core mold is low in cost and can be reused many times.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a core mould and forming die that big camber continuous cavity combined material finished piece that can take out smoothly and with low costs, repetitious usage behind blade shaping core mould.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the core mold comprises a core mold body, wherein the core mold body comprises a core mold upper section, a core mold middle section and a core mold lower section which are sequentially superposed from top to bottom.
According to the technical scheme, compare with prior art, the utility model discloses a mandrel that big curvature cavity continuous composite material finished piece was used, this mandrel body adopts the segmentation design to be mandrel upper segment, mandrel interlude and mandrel hypomere, consequently, after wind-tunnel blade shaping, at first take out the mandrel in the mould chamber after the shaping, vacate the space so that the two takes out from the cavity after the shaping for mandrel upper segment and mandrel hypomere. Therefore, the core mold can be smoothly taken out after the blade is molded, and can be repeatedly used for many times.
Further, the core mould body is made of silica gel.
The technical scheme has the beneficial effects that the silica gel is used as a cushion pad in the field of composite material forming and generally used in pre-compaction operation, does not participate in the direct curing and forming process of a composite material part, and is used as a composite material part forming core mold at this time and directly participates in the forming of the composite material part, and belongs to the first domestic application. And moreover, the silica gel which has the characteristics of good plasticity, soft material, high temperature resistance, large thermal expansion coefficient, certain tensile strength and the like is selected as the core mold, so that the use requirement of the core mold can be met, and the cost is low.
The utility model provides a big continuous cavity combined material finished piece of curvature core mould of usefulness forming die, include: the upper die assembly, the upper cutting die, the two middle dies, the lower cutting die and the lower die assembly are sequentially arranged from top to bottom and detachably connected, and end plates are detachably connected to two ends of the upper die assembly and two ends of the lower die assembly respectively;
the two middle dies are pressed between the upper die assembly and the lower die assembly at intervals, the upper dividing die is pressed between the bottom end surface of the upper die assembly and the top end surfaces of the two middle dies, and an upper core die cavity for forming the upper section of the core die is arranged between the upper die assembly and the upper dividing die; the lower split die is pressed between the top end surface of the lower die assembly and the bottom end surfaces of the two middle dies, and a lower core die cavity for forming the lower section of the core die is arranged between the lower die assembly and the lower split die; and the middle mold, the bottom end surface of the upper partition mold and the top end surface of the lower partition mold enclose a middle core mold cavity for molding the middle section of the core mold.
According to the technical scheme, compare with prior art, the utility model discloses a big continuous cavity combined material finished piece of curvature used the forming die of mandrel, this mould assembles the back, at last core die cavity, middle core die cavity, down core die cavity injection silica gel, at last with mould both ends opening part with end plate seal fixed, heat the solidification to the mould wholly, after the solidification was accomplished, unpack the mould apart and can obtain the mandrel that has the segmentation. The forming die adopts a detachable structure, and the core die is easy to take out.
Further, the upper die assembly includes: the upper die is clamped between the first upper die and the second upper die and detachably connected with the first upper die, two sides of the upper dividing die are respectively pressed between the first upper die and one of the middle dies and between the second upper die and the other middle die, and the first upper die, the second upper die and the upper dividing die form the upper core die cavity;
the first upper die, the upper dividing die, one of the middle dies, the lower dividing die and the lower die assembly are detachably connected; the second upper die, go up cut-off die, another the middle mould cut-off die down the lower mould subassembly can be dismantled and connect, go up the moulding-die with lower mould subassembly both ends can be dismantled respectively and be connected with the end plate.
Furthermore, one side of the first upper side die and one side of the upper pressing die and the other side of the second upper side die and the other side of the upper pressing die are detachably connected through a plurality of side locking screws;
the first upper die, the upper dividing die, one of the middle dies, the lower dividing die and the lower die assembly are detachably connected through a plurality of top locking screws; the second upper die, the upper dividing die, the other middle die, the lower dividing die and the lower die assembly are detachably connected through a plurality of top locking screws; the upper pressing die and the two ends of the lower die assembly are detachably connected with the end plates through end locking screws respectively.
Further, the lower die assembly includes: the lower die is clamped between the first lower die and the second lower die and detachably connected with the first lower die, two sides of the lower dividing die are respectively pressed between the first lower die and one of the middle dies and between the second lower die and the other middle die, and the first lower die, the second lower die and the lower dividing die form the lower core die cavity in a surrounding manner;
the first upper die, the upper dividing die, one of the middle dies, the lower dividing die and the first lower die are detachably connected; the second upper side die, the upper dividing die, the other middle die, the lower dividing die and the second lower side die are detachably connected; the two ends of the upper pressing die and the two ends of the lower pressing die are detachably connected with the end plates through end locking screws respectively.
Furthermore, one side of the first lower side die and one side of the lower pressing die and the other side of the second lower side die and the other side of the lower pressing die are detachably connected through a plurality of side locking screws;
the first upper side die, the upper dividing die, one of the middle dies, the lower dividing die and the first lower side die are detachably connected through a top locking screw; the second upper side die, the upper dividing die, the other middle die, the lower dividing die and the second lower side die are detachably connected through top locking screws.
The beneficial effects that adopt above-mentioned technical scheme to produce are that lateral part locking screw, top locking screw and tip locking screw, the quick assembly disassembly of the forming die of being convenient for, and easy and simple to handle.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a core mold for a large-curvature continuous cavity composite material part provided by the present invention.
Fig. 2 is a schematic diagram of a three-dimensional structure of a forming mold of a core mold for a large-curvature continuous cavity composite material part provided by the present invention.
Fig. 3 is a schematic sectional view of the core mold forming die.
Fig. 4 is a schematic sectional view of the core mold forming die.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the embodiment of the present invention discloses a core mold for a large curvature continuous cavity composite material part, which includes a core mold body 1, wherein the core mold body 1 includes a core mold upper section 101, a core mold middle section 102 and a core mold lower section 103, which are stacked in sequence from top to bottom.
The core mould body 1 is made of silica gel.
The utility model also discloses a forming die of the mandrel that big curvature continuous cavity combined material finished piece was used, this forming die can be formed by steel material processing, and it includes: the upper die assembly 2, the upper cutting die 3, the two middle dies 4, the lower cutting die 5 and the lower die assembly 6 are sequentially arranged from top to bottom and detachably connected, and two ends of the upper die assembly 2 and two ends of the lower die assembly 6 are respectively detachably connected with an end plate 7;
the two middle dies 4 are pressed between the upper die component 2 and the lower die component 6 at intervals, the upper split die 3 is pressed between the bottom end surface of the upper die component 2 and the top end surfaces of the two middle dies 4, and an upper core die cavity 8 for forming the core die upper section 101 is arranged between the upper die component 2 and the upper split die 3; a lower split die 5 is pressed between the top end surface of the lower die assembly 6 and the bottom end surfaces of the two intermediate dies 4, and a lower die cavity 9 for forming the lower core die section 103 is arranged between the lower die assembly 6 and the lower split die 5; an intermediate core cavity 10 for molding the core mold intermediate section 102 is defined by the bottom end surfaces of the two intermediate molds 4, the upper split mold 3, and the top end surface of the lower split mold 5.
Wherein, go up mould assembly 2 and include: the upper die 22 is clamped between the first upper die 21 and the second upper die 23 and is detachably connected with the first upper die 21 and the second upper die 23, two sides of the upper split die 3 are respectively pressed between the first upper die 21 and one of the middle dies 4 and between the second upper die 23 and the other middle die 4, and an upper core die cavity 8 is enclosed among the first upper die 21, the upper die 22, the second upper die 23 and the upper split die 3;
the first upper die 21, the upper dividing die 3, one of the middle dies 4, the lower dividing die 5 and the lower die assembly 6 are detachably connected; the second upper die 23, the upper split die 3, the other intermediate die 4, the lower split die 5 and the lower die assembly 6 are detachably connected, and end plates 7 are detachably connected to two ends of the upper die 22 and the lower die assembly 6 respectively.
The first upper side die 21 and one side of the upper pressing die 22 and the second upper side die 23 and the other side of the upper pressing die 22 are detachably connected through a plurality of side locking screws 11;
the first upper die 21, the upper split die 3, one of the middle dies 4, the lower split die 5 and the lower die assembly 6 are detachably connected through a plurality of top locking screws 12; the second upper die 23, the upper split die 3, the other intermediate die 4, the lower split die 5 and the lower die assembly 6 are detachably connected through a plurality of top locking screws 12; the end plates 7 are detachably connected to the two ends of the upper die 22 and the lower die assembly 6 respectively through end locking screws 13.
Lower die assembly 6 includes: the lower die comprises a first lower die 61, a lower pressing die 62 and a second lower die 63, wherein the lower pressing die 62 is clamped between the first lower die 61 and the second lower die 63 and is detachably connected with the first lower die 61 and the second lower die 63, two sides of a lower dividing die 5 are respectively pressed between the first lower die 61 and one of the middle dies 4 and between the second lower die 63 and the other middle die 4, and a lower core die cavity 9 is enclosed among the first lower die 61, the lower pressing die 62, the second lower die 63 and the lower dividing die 5;
the first upper die 21, the upper split die 3, one of the middle dies 4, the lower split die 5 and the first lower die 61 are detachably connected; the second upper die 23, the upper split die 3, the other intermediate die 4, the lower split die 5 and the second lower die 63 are detachably connected; the end plates 7 are detachably connected to both ends of the upper pressing die 22 and the lower pressing die 62 through end locking screws 13.
One side of the first lower die 61 and the lower pressing die 62 and the other side of the second lower die 63 and the lower pressing die 62 are detachably connected through a plurality of side locking screws 11;
the first upper die 21, the upper split die 3, one of the middle dies 4, the lower split die 5 and the first lower die 61 are detachably connected through a top locking screw 12; the second upper die 23, the upper split die 3, the other intermediate die 4, the lower split die 5, and the second lower die 63 are detachably connected by the top locking screws 12.
When the forming die is assembled, a first upper die, an upper pressing die and a second upper die are fixed into an upper die assembly through lateral locking screws, then a first lower die, a lower pressing die and a second lower die are fixed into a lower die assembly through lateral locking screws, then an upper dividing die, a middle die and a lower dividing die are clamped between the upper die assembly and the lower die assembly and are fixed through top locking screws, then silica gel is injected into the upper die cavity, the middle die cavity and the lower die cavity, finally openings at two ends of the die are sealed and fixed through end locking screws by end plates, then the whole die is heated and cured, and after the curing is finished, the die is disassembled to obtain the segmented silica gel core die with the upper core die section, the middle core die section and the lower core die. And then placing the segmented silica gel core mold in a blade forming mold for blade forming, and after forming, firstly drawing out the middle section of the core mold from a formed mold cavity to make room for the upper section of the core mold and the lower section of the core mold so as to draw out the upper section of the core mold and the lower section of the core mold from the formed cavity.
Therefore, the silica gel core mold can be taken out smoothly after the blade is molded, can be reused for many times, and has low cost, thereby effectively solving the problem that the core mold has the characteristics of variable cross section, large curvature and longer length due to the structural form that the core mold ensures the variable cross section and the torsional cross section of the blade, and the core mold can be taken out from the blade smoothly after the blade is molded by the common core mold.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the die disclosed in the embodiment, since the die corresponds to the method disclosed in the embodiment, the description is simple, and the relevant points can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The core mold for the large-curvature continuous cavity composite material part is characterized by comprising a core mold body (1), wherein the core mold body (1) comprises a core mold upper section (101), a core mold middle section (102) and a core mold lower section (103) which are sequentially stacked from top to bottom.
2. The mandrel for a large-curvature continuous cavity composite material part as claimed in claim 1, wherein the mandrel body (1) is made of silica gel.
3. A mold for forming a core mold for a continuous cavity composite article of large curvature as claimed in claim 2, comprising: the upper die assembly (2), the upper cutting die (3), the two middle dies (4), the lower cutting die (5) and the lower die assembly (6) are sequentially arranged from top to bottom and detachably connected, and end plates (7) are detachably connected to two ends of the upper die assembly (2) and two ends of the lower die assembly (6) respectively;
the two middle dies (4) are pressed between the upper die assembly (2) and the lower die assembly (6) at intervals, the upper split die (3) is pressed between the bottom end surface of the upper die assembly (2) and the top end surfaces of the two middle dies (4), and an upper core die cavity (8) for forming the upper core die section (101) is arranged between the upper die assembly (2) and the upper split die (3); the lower split die (5) is pressed between the top end surface of the lower die assembly (6) and the bottom end surfaces of the two middle dies (4), and a lower core die cavity (9) for molding the lower core die section (103) is arranged between the lower die assembly (6) and the lower split die (5); and an intermediate core die cavity (10) for forming the core die middle section (102) is enclosed by the two intermediate dies (4), the bottom end surface of the upper split die (3) and the top end surface of the lower split die (5).
4. The forming die according to claim 3, characterized in that the upper die assembly (2) comprises: the die comprises a first upper die (21), an upper pressing die (22) and a second upper die (23), wherein the upper pressing die (22) is clamped between the first upper die (21) and the second upper die (23) and is detachably connected with the first upper die and the second upper die, two sides of the upper dividing die (3) are respectively pressed between the first upper die (21) and one of the middle dies (4) and between the second upper die (23) and the other middle die (4), and the upper core die cavity (8) is enclosed among the first upper die (21), the upper pressing die (22), the second upper die (23) and the upper dividing die (3);
the first upper die (21), the upper split die (3), one of the middle dies (4), the lower split die (5) and the lower die assembly (6) are detachably connected; the second upper die (23), go up cut-off die (3), another intermediate die (4) cut-off die (5) down cut-off die subassembly (6) can dismantle the connection, go up moulding-die (22) with lower subassembly (6) both ends can dismantle respectively and be connected with end plate (7).
5. The forming die according to claim 4, characterized in that the first upper die (21) and one side of the upper die (22) and the second upper die (23) and the other side of the upper die (22) are detachably connected by a plurality of side locking screws (11);
the first upper die (21), the upper split die (3), one of the middle dies (4), the lower split die (5) and the lower die assembly (6) are detachably connected through a plurality of top locking screws (12); the second upper die (23), the upper split die (3), the other intermediate die (4), the lower split die (5) and the lower die assembly (6) are detachably connected through a plurality of top locking screws (12); the upper pressing die (22) and the lower die assembly (6) are detachably connected with the end plate (7) through end locking screws (13).
6. The forming die according to claim 4, characterized in that the lower die assembly (6) comprises: the lower die comprises a first lower die (61), a lower pressing die (62) and a second lower die (63), wherein the lower pressing die (62) is clamped between the first lower die (61) and the second lower die (63) and is detachably connected with the first lower die (61) and the second lower die (63), two sides of the lower split die (5) are respectively pressed between the first lower die (61) and one of the middle dies (4) and between the second lower die (63) and the other middle die (4), and the lower core die cavity (9) is enclosed among the first lower die (61), the lower pressing die (62), the second lower die (63) and the lower split die (5);
the first upper die (21), the upper split die (3), one of the middle dies (4), the lower split die (5) and the first lower die (61) are detachably connected; the second upper die (23), the upper split die (3), the other middle die (4), the lower split die (5) and the second lower die (63) are detachably connected; the two ends of the upper pressing die (22) and the lower pressing die (62) are respectively detachably connected with the end plate (7) through end locking screws (13).
7. The forming die according to claim 6, characterized in that the first lower die (61) and one side of the lower die (62) and the second lower die (63) and the other side of the lower die (62) are detachably connected by a plurality of side locking screws (11);
the first upper die (21), the upper split die (3), one of the middle dies (4), the lower split die (5) and the first lower die (61) are detachably connected through a top locking screw (12); the second upper side die (23), the upper split die (3), the other middle die (4), the lower split die (5) and the second lower side die (63) are detachably connected through a top locking screw (12).
CN202222005201.3U 2022-08-01 2022-08-01 Core mould for large-curvature continuous cavity composite material part and forming mould thereof Active CN218315338U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222005201.3U CN218315338U (en) 2022-08-01 2022-08-01 Core mould for large-curvature continuous cavity composite material part and forming mould thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222005201.3U CN218315338U (en) 2022-08-01 2022-08-01 Core mould for large-curvature continuous cavity composite material part and forming mould thereof

Publications (1)

Publication Number Publication Date
CN218315338U true CN218315338U (en) 2023-01-17

Family

ID=84874043

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222005201.3U Active CN218315338U (en) 2022-08-01 2022-08-01 Core mould for large-curvature continuous cavity composite material part and forming mould thereof

Country Status (1)

Country Link
CN (1) CN218315338U (en)

Similar Documents

Publication Publication Date Title
CN213056086U (en) Forming die of unmanned aerial vehicle combined material spare part
CN218315338U (en) Core mould for large-curvature continuous cavity composite material part and forming mould thereof
CN111531809B (en) Scattered-point recombination type die for one-step forming of spherical plastic net
CN211307207U (en) Injection mold with multi-channel structure
CN206484819U (en) A kind of novel injection moulding machine mould
CN117532919A (en) Core mould for large-curvature continuous cavity composite material workpiece and forming mould thereof
CN205825822U (en) A kind of fireworks cylinder is colded pressing production equipment
CN212653779U (en) Injection mold convenient to use
CN205291473U (en) Efficient plastic injection mold series
CN210336725U (en) Improved injection mold
CN211672180U (en) A dough moulding device for region culture
CN207915940U (en) A kind of five layers of silica gel light transmission indicator light mold
CN210477722U (en) Material pulling pin for injection molding of pregnancy testing rod shell
CN212045837U (en) Uniform temperature type injection mold
CN220923028U (en) Die for high-speed rail composite material lampshade
CN1807074A (en) Composite material golf cue head production method and its forming mould
CN211917565U (en) Efficient injection mold and ejection mechanism
CN212860325U (en) Adiabatic energy-saving injection mold structure
CN211842948U (en) Injection mold with heat conducting groove for automobile connector
CN213321827U (en) Extrusion die in glass fiber umbrella rib forming production
CN215619474U (en) Forming die is used in processing of notebook apron
CN203331302U (en) Composite material mould with replaceable mould cavity
CN212888701U (en) Production notebook is with injection mold who has quick cooling function
CN219114661U (en) Injection mold of toper packaging bottle
CN215703838U (en) Injection mold for air outlet of automobile air conditioner

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant