CN208068934U - Composite material female connector molding die - Google Patents

Composite material female connector molding die Download PDF

Info

Publication number
CN208068934U
CN208068934U CN201820223070.7U CN201820223070U CN208068934U CN 208068934 U CN208068934 U CN 208068934U CN 201820223070 U CN201820223070 U CN 201820223070U CN 208068934 U CN208068934 U CN 208068934U
Authority
CN
China
Prior art keywords
parts
composite material
female connector
molding die
moulds
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
CN201820223070.7U
Other languages
Chinese (zh)
Inventor
穆举杰
刘晶
徐建东
金诚
方聃
何红军
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.)
New United Group Co Ltd
Original Assignee
New United Group 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 New United Group Co Ltd filed Critical New United Group Co Ltd
Priority to CN201820223070.7U priority Critical patent/CN208068934U/en
Application granted granted Critical
Publication of CN208068934U publication Critical patent/CN208068934U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The utility model provides a kind of composite material female connector molding die, is related to technical field of mold.Composite material female connector molding die, including:Casting mold, casting mold include housing mould and core model;Silicon moulds, Silicon moulds are made up of casting mold cast, and Silicon moulds include multiple pieces of moulds;Formpiston, formpiston are made of metal, and formpiston includes molding assembly and demoulding component, and molding assembly is detachably connected with demoulding component;Multiple pieces of moulds and formpiston enclose the molding space for accommodating prepreg, and housing mould after molding space is formed for fixing Silicon moulds.Composite material female connector molding die binding silica gel coefficient of thermal expansion height and the high advantage of metal die dimensional accuracy, can make high dimensional accuracy and high performance composite material female connector, additionally it is possible to reduce the difficulty of operation, mould structure is simple and reliable.

Description

Composite material female connector molding die
Technical field
The utility model is related to technical field of mold, in particular to a kind of composite material female connector molding die.
Background technology
Resin transfer moulding technology (Resin Transfer Molding, RTM) is typical non-autoclave low cost material Expect technology of preparing, major advantage is to manufacture high-precision complex configuration part, and keep higher structure design efficiency, Such as Multidirectional connector, all kinds of holders.
RTM moulding process is liquid, the low-viscosity with reactivity under the conditions of pressure injection or outer plus vacuum aided Resin flows in Guan Bi mould removes gas side by side, while infiltrating and impregnating dry state fibre structure.After completing infiltration dipping, tree Fat causes cross-linking reaction by heating in mold and completes solidification, obtains molding product.RTM forming processes can be decomposed into packet It is changed into the chemical reaction process of solid material containing the physical processes such as flowing, infiltration, infiltration, mold filling and liquid resin.
But in existing technique, the mold complexity used is high, also needs to prepare prefabricated component sometimes, in addition RTM Operation difficulty is larger, these are all unfavorable for the manufacturing for completing further types of composite joint.
Utility model content
The purpose of this utility model is to provide a kind of composite material female connector molding dies, can realize to composite wood Expect the manufacture of female connector, and easy to operate, structure is reliable, and formed product precision is high.
What the embodiments of the present invention were realized in:
The embodiments of the present invention provide a kind of composite material female connector molding die, including:
Casting mold, the casting mold include housing mould and core model;
Silicon moulds, the Silicon moulds are made up of casting mold cast, and the Silicon moulds include multiple pieces of moulds;
Formpiston, the formpiston are made of metal, the formpiston include molding assembly and demoulding component, the molding assembly with The demoulding component is detachably connected;
Multiple described piece of moulds and the formpiston enclose the molding space for accommodating prepreg, and the housing mould is used for The Silicon moulds are fixed after the molding space is formed.
In addition, the composite material female connector molding die that embodiment according to the present utility model provides, can also have such as Under additional technical characteristic:
In the alternative embodiment of the utility model, the molding assembly includes the first molded part and the second molded part, institute It includes the first knock-outs and the second knock-outs to state demoulding component, and first molded part has multiple mounting portions, and described first is de- Module is installed on one of them described mounting portion, and second molded part is installed on remaining described peace by second knock-outs Dress portion.
In the alternative embodiment of the utility model, the quantity of second molded part and second knock-outs is four It is a.
In the alternative embodiment of the utility model, by four second molded parts numbers at No. 1 part, No. 2 parts, No. 3 Part and No. 4 parts, No. 1 part and No. 2 parts are symmetrically and at angle, and symmetrically and at angle, No. 1 part, No. 2 parts also divide for No. 3 parts and No. 4 parts Not with No. 4 parts, No. 3 parts symmetrically and at angle.
In the alternative embodiment of the utility model, the angle of No. 1 part and No. 2 parts is 80 °, the angle of No. 1 part and No. 4 parts It is 120 °.
In the alternative embodiment of the utility model, the quantity of second molded part and second knock-outs is two It is a.
In the alternative embodiment of the utility model, by two the second molded part numbers at No. 1 part, No. 2 parts, by institute The first molded part number is stated into No. 3 parts, No. 1 part and No. 2 parts are symmetrically and at 60 ° of angles, and No. 1 part and No. 3 parts are at 60 ° of angles.
In the alternative embodiment of the utility model, first knock-outs include sleeve, stripper bolt and demoulding nut, The sleeve is sheathed on one end of first molded part, and the demoulding nut is set to the separate the first one-tenth described of the sleeve One end of type part, the stripper bolt are arranged in the sleeve and are threadedly coupled with the demoulding nut, first molded part.
In the alternative embodiment of the utility model, the housing mould includes first shell and second shell, and described One shell and the second shell are detachably connected, and the first shell is enclosed with the second shell for pouring into a mould the silicon The cast chamber of rubber moulding, the core model are set to the cast intracavitary.
In the alternative embodiment of the utility model, the core model includes that mould portion and plastotype portion, the plastotype portion is divided to be embedded Divide mould portion in described.
The utility model has the beneficial effects that:
Composite material female connector molding die binding silica gel coefficient of thermal expansion height and the high advantage of metal die dimensional accuracy, High dimensional accuracy and high performance composite material female connector can be made.In addition, by the design concept of the utility model, it can Reduce the difficulty of operation, mould structure is simple and reliable.For the different mother of different connector quantity and the mutual angle of connector Connector, can also the corresponding casting mold of respective production, Silicon moulds and formpiston, basic ideas and inconvenient are conducive to make Make different types of female connector, extremely has use value.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram for the casting mold that the embodiments of the present invention 1 provide;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is the schematic diagram of first shell;
Fig. 4 is the schematic diagram of second shell;
Fig. 5 is the schematic diagram of core model;
Fig. 6 is the exploded view of Silicon moulds;
Fig. 7 is the structural schematic diagram of formpiston;
Fig. 8 is the sectional view of Fig. 7;
Fig. 9 is the structural schematic diagram of the first molded part of Fig. 7;
Figure 10 is the composite material female connector made by the embodiments of the present invention 1;
Figure 11 is the composite material female connector made by the embodiments of the present invention 2.
Icon:10- casting molds;11- housing moulds;111- first shells;1111- hole for injecting glue;1112- gas vents; 112- second shells;13- core models;131- divides mould portion;132- plastotypes portion;30- Silicon moulds;31- block moulds;50- formpistons;501- One molded part;5011- mounting portions;The second molded parts of 502-;The first knock-outs of 521-;5211- sleeves;5212- stripper bolts; 5213- demoulds nut;The second knock-outs of 522-;200- composite material female connectors;200a- composite material female connectors.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts, all Belong to the range of the utility model protection.
It should be noted that:Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "outside" For be based on the orientation or positional relationship shown in the drawings or the utility model product using when the orientation or position usually put Relationship is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or element must There must be specific orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.This Outside, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can Can also be electrical connection to be mechanical connection;It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in utility model.
Embodiment 1
Fig. 1 to Figure 10 is please referred to, a kind of composite material female connector molding die is present embodiments provided, including:
Casting mold 10, casting mold 10 include housing mould 11 and core model 13;
Silicon moulds 30, Silicon moulds 30 are made up of the cast of casting mold 10, and Silicon moulds 30 include multiple pieces of moulds 31;
Formpiston 50, formpiston 50 are made of metal, and formpiston 50 includes molding assembly and demoulding component, molding assembly and demoulding group Part is detachably connected;
Multiple pieces of moulds 31 and formpiston 50 enclose the molding space for accommodating prepreg, housing mould 11 be used at Silicon moulds 30 are fixed in type space after being formed.
Wherein, formpiston 50 is the inner profile for being molded node, and Silicon moulds 30 are used as former, for being molded the outer of node Portion type face.
Specifically, molding assembly includes the first molded part 501 and the second molded part 502, demoulding component includes the first demoulding There are multiple mounting portions 5011, the first knock-outs 521 to be installed on wherein for part 521 and the second knock-outs 522, the first molded part 501 One mounting portion 5011, the second molded part 502 are installed on remaining mounting portion 5011 by the second knock-outs 522.Wherein, the second one-tenth The quantity of type part 502 is corresponding with the quantity of remaining mounting portion 5011, and the mutual position relationship of the second molded part 502 can be Symmetrically, can also be it is asymmetrical, two-by-two the angle between the second molded part 502 can also there are many, specifically according to institute Depending on the shape for the female connector to be made.
In the present embodiment, the quantity of the second molded part 502 and the second knock-outs 522 is four.It is used to prepare Figure 10 Shown in composite material female connector 200.
It is numbered in this way by four the second molded part 502 numbers at No. 1 part, No. 2 parts, No. 3 parts and No. 4 parts for convenience of description It is not limited to the significance level of each second molded part 502, is used only as difference description.
Detailed, in the present embodiment, No. 1 part and No. 2 parts are symmetrically and at angle, and No. 3 parts and No. 4 parts are symmetrically and at folder Angle, No. 1 part, No. 2 parts are also respectively with No. 4 parts, No. 3 parts symmetrically and at angle.
It is that in the present embodiment, the angle of No. 1 part and No. 2 parts is 80 °, the angle of No. 1 part and No. 4 parts in more detail It is 120 °.
Specifically, the first knock-outs 521 include sleeve 5211, stripper bolt 5212 and demoulding nut 5213, sleeve 5211 It is sheathed on one end of the first molded part 501, demoulding nut 5213 is set to one far from the first molded part 501 of sleeve 5211 End, stripper bolt 5212 are arranged in sleeve 5211 and are threadedly coupled with demoulding nut 5213, the first molded part 501.Wherein, it takes off Mould bolt 5212 is hexagon-headed bolt.
In addition, in the present embodiment, the second knock-outs 522 are hexagon socket head cap screw.
About casting mold 10, particularly, housing mould 11 includes first shell 111 and second shell 112, first shell Body 111 and second shell 112 are detachably connected, and first shell 111 is enclosed with second shell 112 for pouring into a mould Silicon moulds 30 Chamber is poured into a mould, core model 13 is set to cast intracavitary.First shell 111 and second shell 112 are solid using screw in the present embodiment Dingan County fills, also can meet demand using dismountable connection type such as clamping in addition to this mode.
There is hole for injecting glue 1111 and gas vent 1112, for being poured when being made to Silicon moulds 30 in first shell 111 Gas in note and discharge casting mold 10.
In the present embodiment, core model 13 includes that mould portion 131 and plastotype portion 132, plastotype portion 132 is divided to be embedded at a point mould portion 131.Plastotype portion 132 is primarily used to form the inner cavity surface of Silicon moulds 30 so that inner cavity surface can be with composite material to be prepared mother The outer profile of connector 200 is adapted to.Divide mould portion 131 to be used for after Silicon moulds 30 pour into a mould curing molding, Silicon moulds 30 are separated into Multiple pieces of moulds 31, the present embodiment are three block moulds 31, therefore mould portion 131 is divided to be also to be arranged in correspondence with into three parts.
The Silicon moulds 30 of the present embodiment, the geomery of formpiston 50 are mainly as shown in Figure 10 to be answered according to what is manufactured Condensation material female connector 200 and formulate, based on parameter index mainly have the wall thickness, internal diameter and length of connector, also connector Mutual angle.If manufacturing other shapes feature connector similar with the composite material female connector 200 of the present embodiment, also may be used Change corresponding construction feature so that the present embodiment is reference, to meet manufacture needs.
The principle of the present embodiment is:
Formpiston 50 and casting mold 10 are gone out according to the size design of product first, following operation is then pressed and carries out product system It makes.
Liquid silica gel is injected to filling at hole for injecting glue 1111 after housing mould 11 is installed in place with core model 13, and cooling is fixed It is demoulded after type, obtains Silicon moulds 30;
By the carbon fiber/epoxy resin base prepreg cut on formpiston 50 laying, until product thickness;
Silicon moulds 30 are sleeved on to the outside of prepreg, molding space is occupied by prepreg at this time;
Housing mould 11 is set in the outside of Silicon moulds 30, multiple pieces of moulds 31 are locked;
It is sent into baking oven, according to the curing cycle of 80 DEG C/1.0h+120 DEG C/2h, curing molding;
It is cooling;
Demoulding opens housing mould 11, and removes Silicon moulds 30.The second knock-outs 522 are screwed out using allen wrench, So that the demoulding of the second molded part 502, then screws stripper bolt 5212 with die nut, sleeve is pushed by demoulding nut 5213 5211, sleeve 5211 pushes composite material female connector 200 so that composite material female connector 200 demoulds completely.
Wherein, prepreg can also be aramid fiber/cyanic acid other than using carbon fiber/epoxy resin base prepreg Ester resin base prepreg or other types prepreg, to meet the making of different types of female connector.Solidification temperature is not with With the difference of prepreg model and it is different, 80 DEG C/1.0h+120 DEG C of general glass fibre prepreg and carbon fiber prepreg/ 2h, also part carbon fiber prepreg and aramid fiber prepreg are 80 DEG C/1.0h+150 DEG C/1.0h+180 DEG C/3h etc..
The prepreg of composite material female connector 200 is made in by curing process, silica gel expanded by heating gives solidification process In prepreg press certain pressure, the coefficient of thermal expansion of silica gel is higher, therefore, can apply to prepreg in thermal histories The pressing force of 0.3MPa-1.0MPa, interior porosity greatly reduces after higher pressing force makes prepreg cure, therefore, system The good mechanical performance of the composite material female connector 200 obtained.
The critical size of composite material female connector 200 is internal diameter size, and internal diameter size is the formpiston made by metal 50 come what is controlled, and the precision of intermetallic composite coating can reach within 0.01mm, therefore, the internal diameter size of composite material female connector 200 ± 0.01mm can be reached, dimensional accuracy is high.
Embodiment 2
Figure 11 is please referred to, the present embodiment also provides a kind of composite material female connector molding die, for manufacturing Figure 11 institutes The composite material female connector 200a shown.
The present embodiment and the main distinction of embodiment 1 are:
The quantity of second molded part 502 and the second knock-outs 522 is two.
By two the second molded part 502 numbers at No. 1 part, No. 2 parts, the first molded part 501 is numbered into No. 3 parts, No. 1 part With No. 2 parts symmetrically and at 60 ° of angles, No. 1 part and No. 3 parts are at 60 ° of angles.
In addition, such as other structures of the structure of core model 13, the structure of Silicon moulds 30, formpiston 50, are all correspondingly become Change, to be adapted to the manufacture requirement of the composite material female connector 200a of the present embodiment.
Other structures can refer to embodiment 1.
The operation when manufacture of the composite material female connector 200a of the present embodiment is referred to embodiment 1, embodiment 1 and reality The design basis for applying example 2 communicates.The prepreg that the present embodiment uses is aramid fiber/cyanate resin base prepreg, prepreg Selection equally can also be the prepreg of other type, can refer to embodiment 1.
In conclusion the composite material female connector molding die binding silica gel coefficient of thermal expansion height and metal of the utility model Die size advantage with high accuracy can make high dimensional accuracy and high performance composite material female connector.In addition, passing through this reality With novel design concept, the difficulty of operation can be reduced, mould structure is simple and reliable.For different connector quantity and connect Head angle different female connector each other, can also the corresponding casting mold 10 of respective production, Silicon moulds 30 and formpiston 50, base This thinking and inconvenient, is conducive to make different types of female connector, extremely have use value.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of composite material female connector molding die, which is characterized in that including:
Casting mold, the casting mold include housing mould and core model;
Silicon moulds, the Silicon moulds are made up of casting mold cast, and the Silicon moulds include multiple pieces of moulds;
Formpiston, the formpiston are made of metal, the formpiston include molding assembly and demoulding component, the molding assembly with it is described Demoulding component is detachably connected;
Multiple described piece of moulds and the formpiston enclose the molding space for accommodating prepreg, and the housing mould is used in institute It states and fixes the Silicon moulds after molding space is formed.
2. composite material female connector molding die according to claim 1, which is characterized in that the molding assembly includes the One molded part and the second molded part, the demoulding component include the first knock-outs and the second knock-outs, the first molded part tool There are multiple mounting portions, first knock-outs to be installed on one of them described mounting portion, second molded part passes through described Two knock-outs are installed on remaining described mounting portion.
3. composite material female connector molding die according to claim 2, which is characterized in that second molded part and institute The quantity for stating the second knock-outs is four.
4. composite material female connector molding die according to claim 3, which is characterized in that by four second moldings For part number at No. 1 part, No. 2 parts, No. 3 parts and No. 4 parts, No. 1 part is symmetrical with No. 2 parts and at angle, No. 3 parts and No. 4 parts symmetrically and At angle, No. 1 part, No. 2 parts are also respectively with No. 4 parts, No. 3 parts symmetrically and at angle.
5. composite material female connector molding die according to claim 4, which is characterized in that the angle of No. 1 part and No. 2 parts It it is 80 °, the angle of No. 1 part and No. 4 parts is 120 °.
6. composite material female connector molding die according to claim 2, which is characterized in that second molded part and institute The quantity for stating the second knock-outs is two.
7. composite material female connector molding die according to claim 6, which is characterized in that by two second moldings Part number at No. 1 part, No. 2 parts, will first molded part number at No. 3 parts, No. 1 part and No. 2 parts are symmetrically and at 60 ° of angles, 1 Number part and No. 3 parts are at 60 ° of angles.
8. composite material female connector molding die according to claim 2, which is characterized in that first knock-outs include Sleeve, stripper bolt and demoulding nut, the sleeve are sheathed on one end of first molded part, and the demoulding nut is set to The sleeve far from first molded part one end, the stripper bolt be arranged in the sleeve and with the demoulding spiral shell Female, described first molded part is threadedly coupled.
9. composite material female connector molding die according to claim 1, which is characterized in that the housing mould includes the One shell and second shell, the first shell and the second shell are detachably connected, the first shell and described second Shell encloses the cast chamber for pouring into a mould the Silicon moulds, and the core model is set to the cast intracavitary.
10. composite material female connector molding die according to claim 9, which is characterized in that the core model includes dividing mould Portion and plastotype portion, the plastotype portion, which is embedded at, described divides mould portion.
CN201820223070.7U 2018-02-07 2018-02-07 Composite material female connector molding die Active CN208068934U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820223070.7U CN208068934U (en) 2018-02-07 2018-02-07 Composite material female connector molding die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820223070.7U CN208068934U (en) 2018-02-07 2018-02-07 Composite material female connector molding die

Publications (1)

Publication Number Publication Date
CN208068934U true CN208068934U (en) 2018-11-09

Family

ID=64037819

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820223070.7U Active CN208068934U (en) 2018-02-07 2018-02-07 Composite material female connector molding die

Country Status (1)

Country Link
CN (1) CN208068934U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108127939A (en) * 2018-02-07 2018-06-08 新誉集团有限公司 Composite material female connector molding die

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108127939A (en) * 2018-02-07 2018-06-08 新誉集团有限公司 Composite material female connector molding die

Similar Documents

Publication Publication Date Title
CN108127939A (en) Composite material female connector molding die
CN208068934U (en) Composite material female connector molding die
CN101177028A (en) Mold of resin base complex material inner gridding skeletal rod structure and shaping method thereof
CN108864995B (en) Multi-axial composite material bent pipe and preparation method thereof
CN110802850A (en) Forming method of composite material pipe with large slenderness ratio
CN116214957A (en) Combined type all-carbon fiber honeycomb core structure forming tool and using method
CN116021803A (en) Preparation mold and preparation method of multi-cavity beam
CN211638229U (en) Precoated sand casting mold and casting sand box
CN213107942U (en) Injection molding precision plastic structural part
CN210256638U (en) Die for gel injection molding of ceramic radome blank
CN111070518A (en) Solid rocket engine core insert heat insulation layer forming device and using method
CN211762321U (en) Novel mould for tunnel model test
CN107972291B (en) Wingtip stop block assembly capable of releasing compressive stress of RTM (resin transfer molding) carbon fiber composite material aerofoil mold and method for manufacturing aerofoil structure
CN210586999U (en) High-precision casting mold
CN109702929A (en) A kind of molding die of Filament-Winding Vessel sand core mould
CN112571822A (en) Memory non-metal core mold structure suitable for winding with medicine and shell forming method
CN211564413U (en) Mold for preparing double-faced shell mold of gearbox body
CN113246493B (en) Forming die of closed-angle part and manufacturing and using method thereof
CN109760246A (en) A kind of insulator chip heating mould
CN214214182U (en) Gel injection molding high-purity alumina product mold
CN104085044B (en) A kind of method of utilization hollow ceramic mould molding hollow ceramic component
CN113492478A (en) Air inlet channel forming die
CN216329444U (en) Mould for manufacturing composite square tube
CN214447764U (en) Multi-cavity antenna housing forming die
CN220574672U (en) Engine base sand mould

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Composite female joint forming mould

Effective date of registration: 20200312

Granted publication date: 20181109

Pledgee: NEW UNITED RAIL TRANSIT TECHNOLOGY Co.,Ltd.

Pledgor: XIN YU GROUP Co.,Ltd.

Registration number: Y2020980000649

PE01 Entry into force of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20211119

Granted publication date: 20181109

Pledgee: NEW UNITED RAIL TRANSIT TECHNOLOGY Co.,Ltd.

Pledgor: NEW UNITED GROUP Co.,Ltd.

Registration number: Y2020980000649

PC01 Cancellation of the registration of the contract for pledge of patent right