CN105666793A - Forming mold and method for metal-plastic composite shell - Google Patents
Forming mold and method for metal-plastic composite shell Download PDFInfo
- Publication number
- CN105666793A CN105666793A CN201610000680.6A CN201610000680A CN105666793A CN 105666793 A CN105666793 A CN 105666793A CN 201610000680 A CN201610000680 A CN 201610000680A CN 105666793 A CN105666793 A CN 105666793A
- Authority
- CN
- China
- Prior art keywords
- metal
- cooling
- temperature
- metal base
- plate
- 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.)
- Granted
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 70
- 229920003023 plastic Polymers 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 title abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 150
- 239000002184 metal Substances 0.000 claims abstract description 150
- 238000010438 heat treatment Methods 0.000 claims abstract description 76
- 239000000498 cooling water Substances 0.000 claims abstract description 48
- 238000001746 injection moulding Methods 0.000 claims abstract description 46
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 238000002347 injection Methods 0.000 claims abstract description 33
- 239000007924 injection Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000002585 base Substances 0.000 claims description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000000758 substrate Substances 0.000 claims description 25
- 239000000047 product Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 9
- 239000010931 gold Substances 0.000 claims description 9
- 229910052737 gold Inorganic materials 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 9
- 230000033228 biological regulation Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 238000005488 sandblasting Methods 0.000 claims description 6
- 239000012467 final product Substances 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000004381 surface treatment Methods 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009123 feedback regulation Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a forming mold and method for a metal-plastic composite shell. The forming mold comprises a plastic injection plate, a metal placing plate and an external control unit. The plastic injection plate is arranged on one side of the metal placing plate. The metal placing plate is connected with the external control unit. The plastic injection mold is internally provided with an injection channel. The concave surface, communicating with the injection channel, of the bottom of the plastic injection plate serves as a space for containing an injection molding melt body. The upper surface of the metal placing plate is a concave surface and capable of placing a metal base material. The metal placing plate is internally provided with an electrical heating element, a cooling water channel and a temperature sensor. The metal base material subjected to surface treatment is placed on the concave surface of the metal placing plate and subjected to heating, injecting, cooling and other steps, and then the metal-plastic composite piece is obtained. The metal base material and plastic are organically combined effectively, in addition, adhesives are avoided, the connection strength between the metal and the plastic can be ensured, and applicability is high.
Description
Technical field
The invention belongs to gold-mould composite prod technical field, it relates to a kind of gold-mould combined housing forming mould, the present invention also relates to a kind of gold-mould combined housing forming method.
Background technology
Along with the continuous lifting of energy consumption and environment protection, the Manufacture and application of lightweight, high-strength parts is paid attention to day by day in fields such as aerospace, automobile making, communications. Utilizing the materials such as aluminum/magnesium alloy, high tensile steel plate, polymkeric substance (plastics) to obtain quality engineering component little, that intensity is high is the forward position focus studied both at home and abroad in recent years. The part of various types of materials manufacture has advantage and the suitable application area of himself, metal-plastic composite high-strength part is owing to having the advantage such as intensity height, quality shaping complex construction little, easy, in aircraft, the field such as housing of storehouse part, body of a motor car, computer and communication class product is progressively applied, it is shown that its wide prospect.
It is known that, the lightweights such as aluminium, magnesium, titanium, Materials with High Strength are widely used in fields such as aviation, automobile making, communication, household electrical appliances owing to having high specific rigidity, specific tenacity and wear resistance, and high tensile steel plate is at the general focus of the investigation and application Chinese scholars research especially of automobile manufacturing field. But the natural characteristics due to metallic substance, have that heat conduction is fast, thermal expansivity is big, be difficult to the shortcomings such as shaping complex construction, limits the Application Areas of above-mentioned lightweight, high strength alloy. As the up-and-coming youngster in material field, plastics have become material essential in modern society's life, injection-moulding plastic is that the molten state liquid will under high temperature with good flowing ability injects mold cavity and moulded products, there is simple, the low cost and other advantages that is shaped, obvious advantage is shown, but plastics exist the shortcomings such as poor dimensional stability, rigidity and physical strength are low in production the part with complicated structure configuration aspects. Abandon the shaping shortcoming of metal base and plastic material, the shaping advantage of the two is organically combined, produce the new research topic that acquisition meets the lightweight of service requirements and the market requirement, high-strength metal-plastic goods are rising in recent years.
The Chinese patent of application number 200710200616.3, discloses one " the connection structure of metalwork and plastic component ", and this structure is the connection that the sealed groove processed by being filled in metalwork by plastic melt realizes metal and plastic.
The Chinese patent of application number 201010587963.8, disclose one " adhesive method of metal and plastics composite members and finished product thereof ", the method is by gluing on metallic substrates, again plastic ejection moulding is had on the internal surface of glue in metal substrate, thus realize the connection of metal and plastics, make metal and plastics.
The Chinese patent of application number 200810301527.2, discloses one " metal and plastics in conjunction with part and manufacture method thereof ", comprises metal body and plastic section. By forming locating structure at metal body and plastic section junction, adopt insert molding technology one-body molded, it is achieved the connection of metal and plastics.
Above-mentioned prior art or be by arranging sealed groove or locating structure at metallic matrix, or be the connection realizing metal and plastics at metal base surface coating adhesive, makes corresponding goods, has that operation is more, the feature of environmental protection is poor and the situation of intensity instability.
Summary of the invention
It is an object of the invention to provide a kind of gold-mould combined housing forming mould, effectively metal base and plastics are organically combined, and without the need to using sizing agent, can ensure the strength of joint between metal and plastics, applicability is strong.
It is a further object of the present invention to provide the forming method of a kind of gold-mould combined housing forming mould.
The technical solution adopted in the present invention is, a kind of gold-mould combined housing forming mould, comprises plastics injection plate, metal placement plate and external control unit outside; Plastics injection plate is placed in metal and places plate side, and described metal is placed plate and is connected with described external control unit outside; Plastics injection plate inside is provided with injection canal, and the concave surface communicated with injection canal bottom plastics injection plate is as the space holding injection moulding melt; It is concave surface that metal places plate upper surface, and this concave surface is provided with metal base; The inside that described metal places plate is provided with electrical heating element, cooling-water duct and temperature sensor, and cooling-water duct is respectively equipped with cooling-water duct entrance and cooling-water duct outlet; External control unit outside comprises water pump, electric three passes valve, two-way electronic valve, check valve, strainer, pressure regulation strainer, rly. and temperature control main unit; The feed-water end of water pump is connected with cooling basin by strainer, and water pump water outlet end is connected with cooling-water duct entrance by electric three passes valve; An outlet of electric three passes valve is directly connected with cooling basin, and one end of two-way electronic valve is connected with compressed air source by pressure regulation strainer, and the two-way electronic valve the other end is connected with cooling-water duct entrance; Cooling-water duct outlet is connected with cooling basin by check valve; Electrical heating element, temperature sensor, temperature indicator are connected with temperature control main unit respectively, and electrical heating element is connected with AC power by rly., and rly. is connected with temperature control main unit, and electric three passes valve is connected with temperature control main unit.
Further, it is interior and spatially arranged vertically that the axis of described electrical heating element and the axis of cooling-water duct are distributed in two planes, and the distance that the distance on electrical heating element distance metal placement plate surface places plate surface with cooling-water duct distance metal is inequal.
Further, described temperature control main unit is provided with sparger; Injection moulding machine is connected with temperature control main unit.
Further, the diameter of described temperature sensor is 2-4mm, and temperature sensor runs through metal placement plate and directly contacts with metal base; The diameter of described cooling-water duct is 8-10mm, and the diameter of electrical heating element is 6-10mm.
Further, described temperature control main unit comprises monitoring and arranges device and PLC, and signal output module, digital received module are connected with PLC respectively, and A/D changes module and digital received model calling.
Further, described cooling-water duct and electrical heating element spacing distance are 15-20mm; It is 10-12mm that cooling-water duct distance plastics injection plate or metal place plate concave surface, and it is 2-6mm that electrical heating element distance metal places the surface of plate concave surface.
Another technical scheme of the present invention is, gold-mould the forming method of combined housing, carries out according to following step:
Step 1: metallic substrate surface processes;
First utilize the mode of alkali liquid corrosion or anodic oxidation or machinery sandblasting to form nano micropore structure capable, 30 nanometers to 1 micron, aperture at the profiled surface of metal base, then the metal base handled well is put into gold-mould combined housing forming mould;
Step 2, the heating phase;
Temperature control main unit control electrical heating element heating of metal base material, it is made to be heated to 85 DEG C-115 DEG C in 15-30s, simultaneously, temperature sensor obtains metallic substrate surface temperature and feeds back in temperature control main unit and compare with the temperature value of setting, when the actual temperature of metal base does not reach set(ting)value, electrical heating element continues heating, and when metal base actual temperature reaches set(ting)value, electrical heating element stops heating;
Step 3, shaping stage;
Utilize injector by injection moulding melt by mould setting injection canal, directly metallic substrate surface formed plastics constitutional features; The temperature of injection moulding melt is 230-270 DEG C, and injection pressure is 80-110MPa, has injected rear dwell time 5-10s, and cooling time, 20s-30s, ensured that injection moulding melt can fully enter the microvoid structure of metallic substrate surface;
Step 4, cooling stages;
Temperature control main unit controlled cooling model water passage cooling metal base, till reaching the temperature of setting;
Step 5, product takes out;
Injection moulding melt, after metallic substrate surface cooling curing, forms integrative-structure with metal base, and mortise together, is taken out and be get final product.
The invention has the beneficial effects as follows and utilize the electrical heating element being embedded in injection mold inside to be heated by metal base, utilize cooling-water duct leads to into water coolant mould and metal base are cooled, the temperature variation of metallic substrate surface in mould is understood by temperature sensor, determine the time in the stages such as injection moulding process heating, cooling, die sinking, eliminate between high-temperature fusant and metal base the condensate layer produced at bath surface due to bigger temperature head, avoid condensate layer that melt is immersed the impact of the small hole of metal base. Meanwhile, this shaping dies can improve the bond strength between forming metal base material and frosting, eliminates internal stress between the material produced due to metal and the plastic melt temperature difference, ensures product precision and quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of gold-the mould combined housing forming mould external control unit outside of the present invention.
Fig. 2 is temperature control main unit structural representation.
Fig. 3 is mould structure and the control principle schematic thereof of the present invention.
The metal that Fig. 4 is the mould structure design adopting the present invention places plate example schematic
Fig. 5 is Fig. 4 side-view.
Wherein: 1, strainer, 2, water pump, 3, electric three passes valve, 4, check valve, 5, pressure regulation strainer, 6, two-way electronic valve, 7, temperature control main unit, 8. sparger, 9, rly., 11, electrical heating element, 12, AC power, 13, temperature sensor, 14, temperature indicator, 15, injection moulding machine, 16, compressed air source, 17, cooling-water duct entrance, 18, cooling-water duct exports, 19, cooling basin, 20, cooling-water duct, 21, metal places plate, 22, plastics injection plate, 23, metal base, 24, injection moulding melt, 25, PLC, 26, monitoring arranges device, 27, signal output module, 28, digital received module, 29, A/D changes module.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The moulding process of the gold of the present invention-mould housing is exactly before injection moulding, first the metal base participating in being shaped is carried out surface treatment, obtain the pore characteristics with certain shape and size, the metal that then metal base 23 is placed in mould is placed in plate 21, by the electrical heating element 11 in mould by the position heating at metal base 23 surface injection of plastic, then metal base 23 surface is carried out temperature detection and feedback regulation, make it to reach temperature required, plastic melt is injected into metal base 23 surface again, then follow-up pressurize is carried out, cooling, the forming processes such as die sinking pickup.
Realize a kind of gold of above-mentioned technique-mould combined housing forming mould, comprise plastics injection plate 22, metal place plate 21 and external control unit outside.
As shown in Figure 3, the inside of metal placement plate 21 is provided with electrical heating element 11, cooling-water duct 20 and temperature sensor 13. Cooling-water duct 20 is respectively equipped with cooling-water duct entrance 17 and cooling-water duct outlet 18. It is interior and spatially arranged vertically that the axis of electrical heating element 11 and the axis of cooling-water duct 20 are distributed in two planes, and the distance that electrical heating element 11 places plate 21 surface apart from metal is inequal with the distance of cooling-water duct 20 apart from metal placement plate 21 surface. Metal is placed plate 21 and is connected with external control unit outside, and heating mould makes metal base 23 reach design temperature, can complete injection moulding by the control of external control unit outside.
In order to the temperature of metal base in accurate production control process, the mould of the present invention also comprises external control unit outside as shown in Figure 1. The feed-water end of water pump 2 is connected with cooling basin 19 by strainer 1, and water pump 2 water side is connected with cooling-water duct entrance 17 by electric three passes valve 3, to add water coolant in cooling-water duct; An outlet of electric three passes valve 3 is directly connected with cooling basin 19, so that when not needing water coolant in cooling-water duct, the water flowed out by water pump 2 directly returns to cooling basin 19 by electric three passes valve 3, by the flow direction of electric three passes valve 3 controlled cooling model water. One end of two-way electronic valve 6 is connected with compressed air source 16 by pressure regulation strainer 5, and two-way electronic valve 6 the other end is connected with cooling-water duct entrance 17, is all blown out by water coolant into air to lead in cooling-water duct 20. Cooling-water duct outlet 18 is connected with cooling basin 19 by check valve 4. When mold heated, check valve 4 avoids water coolant to blow back into mould inside. Electrical heating element 11, temperature sensor 13, temperature indicator 14 are all connected with temperature control main unit 7, and electrical heating element 11 is connected with AC power 12 by rly. 9, and rly. 9 is connected with temperature control main unit 7, it is achieved temperature control main unit 7 controls the work of electrical heating element 11. Temperature indicator 14 is for controling parameters such as input temps. Temperature control main unit 7 is provided with sparger 8. Electric three passes valve 3 is connected with temperature control main unit 7.
Wherein, the structure of temperature control main unit 7 as shown in Figure 2, comprises monitoring and arranges device 26 and PLC25, and signal output module 27, digital received module 28 are connected with PLC25 respectively, and A/D changes module 29 and is connected with digital received module 28.
In forming process, temperature indicator 14 inputs the controling parameters such as the temperature range of metal base 23, the temperature of metal base 23 is measured by the temperature sensor 13 being embedded in mould inside, if temperature is not positioned at (injection moulding melt 24 and metal base 23 optimum adhesion strength temperature within the high temperature range of setting, it is generally 80-180 DEG C), then temperature control main unit 7 relay 9 powers to electrical heating element 11, utilizes electrical heating element 11 that metal is placed plate 21 rapid heating and metal base 23 temperature is arrived within temperature range.Reach the temperature of setting in the temperature of metal base 23 after, temperature indicator 14 sends ready signal to temperature control main unit 7, and temperature control main unit 7 sends signal that can be shaping to injection moulding machine 15, carries out injection moulding, completes moulding process; After completing injection moulding, after temperature control main unit 7 receives the signal of injection moulding machine 15, the switch state of control electric three passes valve 3, water coolant is allowed to enter the cooling-water duct entrance 17 of metal placement plate 21, utilize water coolant that metal is placed plate 21 to cool fast, when the temperature that metal places plate 21 is cooled within the temperature range of setting, temperature control main unit 7 sends the signal that can open mould to injection moulding machine 15, takes out forming part. Meanwhile, temperature control main unit 7 receives the die sinking signal of injection moulding machine 15, and the switch state of control electric three passes valve 3, allows water coolant directly return to cooling basin 19. Open with control two-way electronic valve 6, the cooling-water duct entrance 17 that the air of compressed air source 16 places plate 21 through pressure regulation strainer 5 and two-way electronic valve 6 by metal enters cooling-water duct 20, metal is placed the remaining water coolant in plate 21 and blows back cooling basin 19 by cooling-water duct outlet 18, check valve 4. Entering metal at pressurized air to place in plate 21 after the 2-3 second, external control unit outside is powered to electrical heating element 11, then enters the next circulation that is shaped.
Fig. 4 gives a kind of gold-mould casing forming mold metal adopting present configuration and places plate structure schematic diagram.
Wherein the diameter of temperature sensor 13 is 2-4mm, and temperature sensor 13 runs through metal placement plate 21 and directly contacts with metal base 23; The diameter of cooling-water duct 20 is 8-10mm, and the diameter of electrical heating element 11 is 6-10mm. Cooling-water duct 20 places plate 21 concave surface 10-12mm apart from plastics injection plate 22 and metal, and electrical heating element 11 places the concave surface 2-6mm of plate 21 apart from metal, and the arrangement interval distance of cooling-water duct 20 and electrical heating element 11 is 15-20mm.
Due in metal-plastic composite members moulding process, when injection moulding melt 24 (i.e. plastic melt) contacts with metal base 23, if metal base 23 temperature is lower, heat transmission between plastic melt with metal base 23 surface can make the top layer melt rapid reduction contacted with metal base 23, causes the plastic melt rapid solidification on top layer and forms condensate layer. The existence of condensate layer can hinder plastic melt to immerse to the micropore of metal base 23, thus affects plastic melt and the interface cohesion of metal base 23. In addition, if metal base 23 temperature is too low in filling process, plastic melt speed of cooling is uneven, the junction between plastic melt and metal base 23 can be made to there is bigger stress and concentrate, affect plastic melt and the interface cohesion of metal base 23 further. When metal base 23 temperature higher than the second-order transition temperature of plastic melt or during fusing point, the surperficial condensate layer of plastic melt can be thinning or disappear. Within the specific limits, along with the rising of metal base 23 temperature, the viscosity of plastic melt progressively reduces, and the mobility of plastic melt is improved, and is conducive to plastic melt to be filled into the small hole on metal base 23 surface, ensures the interface cohesion of the two.
According to above metal-plastic forming technology flow process and the requirement to sheet metal temperature, invent the forming method of a kind of gold-mould combined housing forming mould.
Specific as follows:
Step 1: metal base 23 surface treatment;
First the mode of alkali liquid corrosion or anodic oxidation or machinery sandblasting is utilized to form nano micropore structure capable at the profiled surface of metal base 23,30 nanometers to 1 micron, aperture, then puts into the gold of the present invention-mould combined housing forming mould by the metal base 23 handled well;
Step 2, the heating phase
Temperature control main unit 7 controls electrical heating element 11 heating of metal base material 23, it is made to be heated to 85-115 DEG C in 15-30s, simultaneously, temperature sensor 13 obtains metal base 23 surface temperature and feeds back in temperature control main unit 7 and compare with the temperature value (being assumed to 110 degrees Celsius) of setting, when the actual temperature of metal base 23 does not reach set(ting)value, electrical heating element 11 continues heating, and when metal base 23 actual temperature reaches set(ting)value, electrical heating element 11 stops heating;
Step 3, shaping stage;
Utilize injector 15, injection moulding melt 24 is passed through the gating system of setting in mould, directly form plastics constitutional features on metal base 23 surface. The temperature of injection moulding melt 24 is 230-270 DEG C, injection pressure is 80-110MPa, has injected rear dwell time 5-10s, cooling time 20s-30s, ensure that injection moulding melt 24 can fully enter the microvoid structure on metal base 23 surface, it is to increase the bonding strength of plastics and metallic surface;
Step 4, cooling stages;
Temperature control main unit 7 controlled cooling model water passage 20 cool metal base material 23, till reaching the temperature (70 DEG C) of setting. Temperature control main unit 7 not only ensures the signal control of temperature control system self but also can realize signal interaction with injection moulding machine 15, ensures carrying out smoothly of forming process;
Step 5, product takes out;
Injection moulding melt 24, after metal base 23 surface cool is solidified, forms integrative-structure with metal base 23, and mortise is together.
Can realize organically combining metal base 23 and plastics (injection moulding melt 24) by the method, it is not necessary to using sizing agent, the obnoxious flavour avoiding sizing agent release is to the actual bodily harm of operator. Utilize metal base 23 to obtain the outside surface of product, the wall thickness of product, intensity and appearance requirement can be met. Plastic production product internal surface can play the heat insulation effect of damping, meanwhile, due to the easy mobility of injection moulding melt 24, moreover it is possible to produces the goods with the complex construction such as screw hole, stiffening web, meets the assembling demand that product is follow-up.
Embodiment 1
First utilize the mode of alkali liquid corrosion or anodic oxidation or machinery sandblasting to form nano micropore structure capable, 30 nanometers to 1 micron, aperture at the profiled surface of metal base, then the metal base handled well is put into gold-mould combined housing forming mould; Temperature control main unit control electrical heating element heating of metal base material, it is made to be heated to 85 DEG C in 15s, simultaneously, temperature sensor obtains metallic substrate surface temperature and feeds back in temperature control main unit and compare with the temperature value 110 DEG C of setting, when the actual temperature of metal base does not reach set(ting)value, electrical heating element continues heating, and when metal base actual temperature reaches set(ting)value, electrical heating element stops heating; Utilize injector by injection moulding melt by mould setting gating system, directly metallic substrate surface formed plastics constitutional features; The temperature of injection moulding melt is 230 DEG C, and injection pressure is 110MPa, has injected rear dwell time 5s, and cooling time, 20s, ensured that injection moulding melt can fully enter the microvoid structure of metallic substrate surface; Temperature control main unit controlled cooling model water passage cooling metal base, till reaching the temperature 70 DEG C of setting; Injection moulding melt, after metallic substrate surface cooling curing, forms integrative-structure with metal base, and mortise together, is taken out and be get final product.
Embodiment 2
First utilize the mode of alkali liquid corrosion or anodic oxidation or machinery sandblasting to form nano micropore structure capable, 30 nanometers to 1 micron, aperture at the profiled surface of metal base, then the metal base handled well is put into gold-mould combined housing forming mould;Temperature control main unit control electrical heating element heating of metal base material, it is made to be heated to 115 DEG C in 30s, simultaneously, temperature sensor obtains metallic substrate surface temperature and feeds back in temperature control main unit and compare with the temperature value 110 DEG C of setting, when the actual temperature of metal base does not reach set(ting)value, electrical heating element continues heating, and when metal base actual temperature reaches set(ting)value, electrical heating element stops heating; Utilize injector by injection moulding melt by mould setting gating system, directly metallic substrate surface formed plastics constitutional features; The temperature of injection moulding melt is 270 DEG C, and injection pressure is 110MPa, has injected rear dwell time 10s, and cooling time, 30s, ensured that injection moulding melt can fully enter the microvoid structure of metallic substrate surface; Temperature control main unit controlled cooling model water passage cooling metal base, till reaching the temperature 70 DEG C of setting; Injection moulding melt, after metallic substrate surface cooling curing, forms integrative-structure with metal base, and mortise together, is taken out and be get final product.
Embodiment 3
First utilize the mode of alkali liquid corrosion or anodic oxidation or machinery sandblasting to form nano micropore structure capable, 30 nanometers to 1 micron, aperture at the profiled surface of metal base, then the metal base handled well is put into gold-mould combined housing forming mould; Temperature control main unit control electrical heating element heating of metal base material, it is made to be heated to 100 DEG C in 20s, simultaneously, temperature sensor obtains metallic substrate surface temperature and feeds back in temperature control main unit and compare with the temperature value 110 DEG C of setting, when the actual temperature of metal base does not reach set(ting)value, electrical heating element continues heating, and when metal base actual temperature reaches set(ting)value, electrical heating element stops heating; Utilize injector by injection moulding melt by mould setting gating system, directly metallic substrate surface formed plastics constitutional features; The temperature of injection moulding melt is 250 DEG C, and injection pressure is 100MPa, has injected rear dwell time 7s, and cooling time, 25s, ensured that injection moulding melt can fully enter the microvoid structure of metallic substrate surface; Temperature control main unit controlled cooling model water passage cooling metal base, till reaching the temperature 70 DEG C of setting; Injection moulding melt, after metallic substrate surface cooling curing, forms integrative-structure with metal base, and mortise together, is taken out and be get final product.
Claims (7)
1. a gold-mould combined housing forming mould, it is characterised in that, comprise plastics injection plate (22), metal place plate (21) and external control unit outside; Plastics injection plate (22) is placed in metal and places plate (21) side, and described metal is placed plate (21) and is connected with described external control unit outside; Plastics injection plate (22) inside is provided with injection canal, and the concave surface that plastics injection plate (22) bottom communicates with injection canal is as the space holding injection moulding melt (24); It is concave surface that metal places plate (21) upper surface, and this concave surface is placed with metal base (23); The inside that described metal places plate (21) is provided with electrical heating element (11), cooling-water duct (20) and temperature sensor (13), and cooling-water duct (20) is respectively equipped with cooling-water duct entrance (17) and cooling-water duct outlet (18); Described external control unit outside comprises water pump (2), electric three passes valve (3), two-way electronic valve (6), check valve (4), strainer (1), pressure regulation strainer (5), rly. (9) and temperature control main unit (7); The feed-water end of water pump (2) is connected with cooling basin (19) by strainer (1), and water pump (2) water side is connected with cooling-water duct entrance (17) by electric three passes valve (3);An outlet of electric three passes valve (3) is directly connected with cooling basin (19), one end of two-way electronic valve (6) is connected with compressed air source (16) by pressure regulation strainer (5), and two-way electronic valve (6) the other end is connected with cooling-water duct entrance (17); Cooling-water duct outlet (18) is connected with cooling basin (19) by check valve (4); Electrical heating element (11), temperature sensor (13), temperature indicator (14) are connected with temperature control main unit (7) respectively, electrical heating element (11) is connected with AC power (12) by rly. (9), rly. (9) is connected with temperature control main unit (7), and electric three passes valve (3) is connected with temperature control main unit (7).
2. a kind of gold according to claim 1-mould combined housing forming mould, it is characterized in that, it is interior and spatially arranged vertically that the axis of described electrical heating element (11) and the axis of cooling-water duct (20) are distributed in two planes, and the distance that electrical heating element (11) distance metal places plate (21) surface is inequal with the distance on cooling-water duct (20) distance metal placement plate (21) surface.
3. a kind of gold according to claim 1-mould combined housing forming mould, it is characterised in that, described temperature control main unit (7) is provided with sparger (8); Injection moulding machine (15) is connected with temperature control main unit (7).
4. a kind of gold according to claim 1-mould combined housing forming mould, it is characterized in that, the diameter of described temperature sensor (13) is 2-4mm, and temperature sensor (13) runs through metal placement plate (21) and directly contacts with metal base (23); The diameter of described cooling-water duct (20) is 8-10mm, and the diameter of electrical heating element (11) is 6-10mm.
5. a kind of gold according to claim 1-mould combined housing forming mould, it is characterized in that, described temperature control main unit (7) comprises monitoring and arranges device (26) and PLC (25), signal output module (27), digital received module (28) are connected with PLC (25) respectively, and A/D changes module (29) and is connected with digital received module (28).
6. a kind of gold according to claim 1-mould combined housing forming mould, it is characterised in that, described cooling-water duct (20) and electrical heating element (11) spacing distance are 15-20mm; Described cooling-water duct (20) distance plastics injection plate (22) or metal place plate (21) concave surface 10-12mm, and it is 2-6mm that electrical heating element (11) distance metal places the surface of plate (21) concave surface.
7. the forming method of a gold as claimed in claim 1-mould combined housing forming mould, it is characterised in that, carry out according to following step:
Step 1: metallic substrate surface processes;
First the mode of alkali liquid corrosion or anodic oxidation or machinery sandblasting is utilized to form micro/nano level microvoid structure at the profiled surface of metal base, 30 nanometers to 1 micron, aperture, then puts into the metal base handled well gold-mould combined housing forming mould metal and places plate concave surface;
Step 2, the heating phase;
Temperature control main unit control electrical heating element heating of metal base material, it is made to be heated to 85 DEG C-115 DEG C in 15-30s, simultaneously, temperature sensor obtains metallic substrate surface temperature and feeds back in temperature control main unit and compare with the temperature value of setting, when the actual temperature of metal base does not reach set(ting)value, electrical heating element continues heating, and when metal base actual temperature reaches set(ting)value, electrical heating element stops heating;
Step 3, shaping stage;
Utilize injector by injection moulding melt by injection canal in mould, directly form plastics constitutional features in metallic substrate surface;The temperature of injection moulding melt is 230-270 DEG C, and injection pressure is 80-110MPa, has injected rear dwell time 5-10s, and cooling time, 20s-30s, ensured that injection moulding melt can fully enter the microvoid structure of metallic substrate surface;
Step 4, cooling stages;
Temperature control main unit controlled cooling model water passage cooling die and metal base, till reaching the temperature of setting;
Step 5, product takes out;
Injection moulding melt, after metallic substrate surface cooling curing, forms integrative-structure with metal base, and mortise together, is taken out and be get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610000680.6A CN105666793B (en) | 2016-01-04 | 2016-01-04 | A kind of gold-modeling combined housing molding die and its forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610000680.6A CN105666793B (en) | 2016-01-04 | 2016-01-04 | A kind of gold-modeling combined housing molding die and its forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105666793A true CN105666793A (en) | 2016-06-15 |
| CN105666793B CN105666793B (en) | 2018-10-12 |
Family
ID=56190102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610000680.6A Active CN105666793B (en) | 2016-01-04 | 2016-01-04 | A kind of gold-modeling combined housing molding die and its forming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105666793B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363869A (en) * | 2016-10-25 | 2017-02-01 | 深圳市宝元金实业有限公司 | Method for forming nano-voids in surface of metal substrate |
| CN106426692A (en) * | 2016-11-07 | 2017-02-22 | 绵阳市兴和模具有限公司 | Bakelite poured mould |
| CN110970581A (en) * | 2019-12-23 | 2020-04-07 | 东莞塔菲尔新能源科技有限公司 | Light lithium battery shell and preparation method thereof |
| CN111068183A (en) * | 2019-12-31 | 2020-04-28 | 青岛温可微电子科技有限公司 | Manufacturing method of welding type heating device |
| CN111516206A (en) * | 2020-05-17 | 2020-08-11 | 惠州市恺琞实业有限公司 | Battery shell embedded with metal piece and forming method thereof |
| CN112341941A (en) * | 2020-11-27 | 2021-02-09 | 浙江师范大学 | Method for improving bonding of polymer and metal interface |
| CN116175992A (en) * | 2022-12-14 | 2023-05-30 | 湖北三江航天江河橡塑有限公司 | Plastic liner and metal joint integrated forming method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5247057A (en) * | 1975-10-13 | 1977-04-14 | Hitachi Ltd | Method of producing plastic molded product adhered with metal foil or plate to one side surface |
| EP0036763A1 (en) * | 1980-03-25 | 1981-09-30 | METAL BOX p.l.c. | Method and apparatus for forming a closure of plastics material in an aperture in a metal substrate |
| CN101306568A (en) * | 2007-05-15 | 2008-11-19 | 鸿富锦精密工业（深圳）有限公司 | Jointing construction of metalwork and working of plastics |
| CN101578018A (en) * | 2008-05-09 | 2009-11-11 | 富准精密工业(深圳)有限公司 | Combination piece of metal and plastic and manufacture method thereof |
| US20100098910A1 (en) * | 2007-03-12 | 2010-04-22 | Taisei Plas Co., Ltd. | Aluminum alloy composite and method for joining thereof |
| CN101811338A (en) * | 2009-10-22 | 2010-08-25 | 杨东佐 | Mould capable of realizing rapid heat cycle |
| CN102139535A (en) * | 2009-12-10 | 2011-08-03 | 李少白 | Method for bonding metal and plastic and finished product thereof |
| CN202716448U (en) * | 2012-03-20 | 2013-02-06 | 浙江师范大学 | Mold temperature controller with small boiler |
| CN103722668A (en) * | 2013-12-25 | 2014-04-16 | 浙江师范大学 | Metal-plastic composite mobile phone shell and forming method thereof |
-
2016
- 2016-01-04 CN CN201610000680.6A patent/CN105666793B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5247057A (en) * | 1975-10-13 | 1977-04-14 | Hitachi Ltd | Method of producing plastic molded product adhered with metal foil or plate to one side surface |
| EP0036763A1 (en) * | 1980-03-25 | 1981-09-30 | METAL BOX p.l.c. | Method and apparatus for forming a closure of plastics material in an aperture in a metal substrate |
| US20100098910A1 (en) * | 2007-03-12 | 2010-04-22 | Taisei Plas Co., Ltd. | Aluminum alloy composite and method for joining thereof |
| CN101306568A (en) * | 2007-05-15 | 2008-11-19 | 鸿富锦精密工业（深圳）有限公司 | Jointing construction of metalwork and working of plastics |
| CN101578018A (en) * | 2008-05-09 | 2009-11-11 | 富准精密工业(深圳)有限公司 | Combination piece of metal and plastic and manufacture method thereof |
| CN101811338A (en) * | 2009-10-22 | 2010-08-25 | 杨东佐 | Mould capable of realizing rapid heat cycle |
| CN102139535A (en) * | 2009-12-10 | 2011-08-03 | 李少白 | Method for bonding metal and plastic and finished product thereof |
| CN202716448U (en) * | 2012-03-20 | 2013-02-06 | 浙江师范大学 | Mold temperature controller with small boiler |
| CN103722668A (en) * | 2013-12-25 | 2014-04-16 | 浙江师范大学 | Metal-plastic composite mobile phone shell and forming method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 齐宝森 等: "《机械工程材料》", 31 March 2006, 哈尔滨工业大学出版社 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363869A (en) * | 2016-10-25 | 2017-02-01 | 深圳市宝元金实业有限公司 | Method for forming nano-voids in surface of metal substrate |
| CN106426692A (en) * | 2016-11-07 | 2017-02-22 | 绵阳市兴和模具有限公司 | Bakelite poured mould |
| CN110970581A (en) * | 2019-12-23 | 2020-04-07 | 东莞塔菲尔新能源科技有限公司 | Light lithium battery shell and preparation method thereof |
| CN111068183A (en) * | 2019-12-31 | 2020-04-28 | 青岛温可微电子科技有限公司 | Manufacturing method of welding type heating device |
| CN111516206A (en) * | 2020-05-17 | 2020-08-11 | 惠州市恺琞实业有限公司 | Battery shell embedded with metal piece and forming method thereof |
| CN112341941A (en) * | 2020-11-27 | 2021-02-09 | 浙江师范大学 | Method for improving bonding of polymer and metal interface |
| CN112341941B (en) * | 2020-11-27 | 2023-02-03 | 浙江师范大学 | Method for improving bonding of polymer and metal interface |
| CN116175992A (en) * | 2022-12-14 | 2023-05-30 | 湖北三江航天江河橡塑有限公司 | Plastic liner and metal joint integrated forming method |
| CN116175992B (en) * | 2022-12-14 | 2024-04-30 | 湖北三江航天江河橡塑有限公司 | Plastic liner and metal joint integrated forming method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105666793B (en) | 2018-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105666793A (en) | Forming mold and method for metal-plastic composite shell | |
| CN206536762U (en) | It is a kind of to adjust the injection mold of die cavity thickness | |
| CN102555131B (en) | Device and method for forming fiber reinforced resin-based composite material plate through hot stamping | |
| CN210211186U (en) | Quick cooling device for injection mold | |
| CN213006403U (en) | Quick radiating injection mold | |
| CN104103385A (en) | Overhung composite insulator string and method for printing same by using 3D | |
| CN212097397U (en) | Quick refrigerated injection mold in automobile production | |
| CN110524915A (en) | A kind of socket forming frock and socket forming method | |
| CN102049838A (en) | Method for molding metal piece with view window and plastic molding product and application thereof | |
| CN103317647B (en) | Small plastic part laser melting extrusion molding method and apparatus thereof | |
| CN106217697B (en) | A kind of molding die and preparation method thereof of composite material multi-rotor unmanned aerial vehicle horn | |
| CN100386168C (en) | Microinjection forming mould for metal and ceramic minitype parts forming | |
| CN106738735A (en) | The processing method that a kind of ABS material is molded LED television shell | |
| CN211105429U (en) | Automobile engine oil pipe water-assisted injection molding mold | |
| CN102391794B (en) | Device and method for controlling glue joint curing deformation of dissimilar material | |
| CN202896466U (en) | Plastic component with no bubble surface on glue feeding surface | |
| CN213860442U (en) | Automobile part injection mold | |
| CN201693748U (en) | High-precision high-speed hot and cold mould | |
| CN206527941U (en) | A kind of heating arrangement of mould | |
| CN206436486U (en) | A kind of Vehicle Control Panel injection moulding apparatus | |
| CN205997225U (en) | A kind of mould of composite many rotor wing unmanned aerial vehicles horn | |
| CN212124252U (en) | Novel RTM forming system | |
| CN104690971B (en) | A kind of quick gridding forming tool being applied on mechanical arm and method | |
| CN106113384B (en) | A kind of spiral case manufacture method with composite material lining | |
| CN214082542U (en) | Quick cooling type injection molding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220225 Address after: 312030 Changfeng Industrial Park, Pingshui Town, Keqiao District, Shaoxing City, Zhejiang Province Patentee after: ZHEJIANG HENGDAO TECHNOLOGY Co.,Ltd. Address before: 321004 College of engineering, Zhejiang Normal University, No. 688, Yingbin Avenue, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG NORMAL University |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A metal plastic composite shell forming die and its forming method Effective date of registration: 20220630 Granted publication date: 20181012 Pledgee: Zhejiang Shaoxing Ruifeng Rural Commercial Bank Co.,Ltd. Pingshui sub branch Pledgor: ZHEJIANG HENGDAO TECHNOLOGY Co.,Ltd. Registration number: Y2022980009473 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 312030 Changfeng Industrial Park, Pingshui Town, Keqiao District, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Hengdao Technology Co.,Ltd. Address before: 312030 Changfeng Industrial Park, Pingshui Town, Keqiao District, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG HENGDAO TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231218 Granted publication date: 20181012 Pledgee: Zhejiang Shaoxing Ruifeng Rural Commercial Bank Co.,Ltd. Pingshui sub branch Pledgor: ZHEJIANG HENGDAO TECHNOLOGY Co.,Ltd. Registration number: Y2022980009473 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |