CN201721001U - Pressure-retaining injection nozzle - Google Patents
Pressure-retaining injection nozzle Download PDFInfo
- Publication number
- CN201721001U CN201721001U CN2010201853719U CN201020185371U CN201721001U CN 201721001 U CN201721001 U CN 201721001U CN 2010201853719 U CN2010201853719 U CN 2010201853719U CN 201020185371 U CN201020185371 U CN 201020185371U CN 201721001 U CN201721001 U CN 201721001U
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- nozzle body
- injection
- pressure
- flap
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a pressure-retaining injection nozzle, comprising a fixed nozzle body and a movable nozzle body, wherein the fixed nozzle body is internally provided with an injection runner; the movable nozzle body is sheathed on the fixed nozzle body in a sliding way; the movable nozzle body is internally provided with a pressure-retaining chamber; the front end of the pressure-retaining chamber is communicated with the injection runner; the rear end of the pressure-retaining chamber is provided with an injection switch valve; during the injection process, the injection switch valve is opened; after the injection is finished, the injection switch valve is closed; and the movable nozzle body moves forwards and compresses the volume of the pressure-retaining chamber, thus forming the pressure-retaining effect. Therefore, the pressure-retaining chamber is compressed by utilizing the movable nozzle body to slide relatively to the fixed nozzle body so that the pressure of a plastic fusant is not reduced, the pressure retaining on the molding chamber is realized and the defect that the molding chamber is not completely filled is prevented. In the utility model, the molding chamber does not need to keep pressure by a screw rod; and the screw rod withdraws immediately after the injection is finished and is prepared for the next injection; therefore, the forming period of the injection molding part can be effectively shortened, the production efficiency can be improved, and the injection nozzle has good economic benefits.
Description
Technical field
The utility model relates to plasticizing and is injected at the injection moulding machine art that different time carries out, and refers in particular to a kind of pressure maintaining type injection nozzle that is used on the injection moulding machine.
Background technology
Injection mo(u)lding is the main forming method of plastics, be characterized in the production efficiency height, strong to various processing of plastic adaptability, can forming shape complexity, accurate in size injection-molded item, be widely used in every field such as national defense industry, aviation, traffic, electric, mechanical, building, agricultural, culture and education, health, commodity.Its production process is: the solid plastics with granular (or powdery) plastifies (comprising heating, compacting, mixing process) earlier, become the good plastic melt of plasticity with uniform density, viscosity and component, make this kind plastic melt possess certain flow rate to inject in the die cavity that enters mould by applying certain pressure again, behind the plastic melt cooling and shaping, just can obtain the plastic products consistent with the mold cavity shape.
Fig. 1 shows the part-structure of the single cylinder injection-moulding device that generally uses at present.When plasticizing, the screw rod rotation will be pushed ahead continuously from expecting a mouthful material that falls into groove, heating collar sends heat in the screw channel material by the barrel wall, solid material heats outside with screw spiral to be sheared under the double action, reach the fusion of plasticizing, meanwhile, screw rod retreats under the reaction force of material, and what screw rod was done is the compound motion that retreats while rotating.Melt flows into the front end of screw rod, and produces back pressure, moves behind the lead-screw, finishes the metering to melt.During injection, barrel 1 ' interior screw rod plays the plunger effect, and under injection cylinder 8 ' effect, rapidly reach is pressed into die cavity with the plastics of melt.For the defective that prevents that mold cavity from not filling up, after finishing, injection wants pressurize a period of time, and promptly screw rod stays for some time, and after pressurize was finished, screw rod retreated while rotating, and prepared injection next time.In injection, whole move oil cylinder 2 ' by be connected front template 3 ' whole move oil cylinder pull bar 4 ' pulling injection seat 5 ', prevent that injection nozzle from leaving mould.Two whole moves oil cylinder 2 ' along barrel axis symmetry, whole oil cylinder 2 ' tail end and the injection seat 5 ' is connected of moving, piston rod 6 ' by whole move oil cylinder pull bar connection screw 7 ', move oil cylinder pull bar 4 ' be connected with putting in order.The screw rod 17 of barrel 1 ' lining ', it advances by injection cylinder 8 ' driving, its retreat then by screw rod 17 ' front end to injection switch valve 11 ' the plastic melt pressure-driven, injection cylinder 8 ' oil return circuit on keep certain back pressure, can control the speed of screw rod 17 ' retreat.Fig. 2, Fig. 3 show the structure of dispensing end.Fig. 3 is the profile of Fig. 2.Injection nozzle 9 ' by screw thread and injection nozzle body 10 ' be connected, injection nozzle body 10 ' by screw be fixed on the injection switch valve 11 ' on, injection switch valve 11 ' by screw be fastened on barrel 1 ' drive end bearing bracket 12 ' on, barrel 1 ' drive end bearing bracket 12 ' also by screw be fixed on barrel 1 ' on.13 ', 14 ', 15 ' be mounted in plastic melt passage external heated circle, be equipped with temperature sensor on it, control plastic melt temperature.During injection, injection switch valve 11 ' with injection canal 16 ' open screw rod 17 ' move to the mould direction, plastic melt is pressed into die cavity, behind the pressurize certain hour, injection switch valve 11 ' close injection canal 16 ', screw rod 17 ' retreat while rotating is prepared injection next time.
The injection nozzle structure of above-mentioned existing injection machine, though can offer the effect that user's injection of plastic melt enters die cavity, can realize producing in batches, really has progressive, but when using, reality but finds still to have many deficiencies on himself structure and the serviceability, the injection nozzle that causes existing injection machine is in practical application, fail to reach best result of use and task performance, now its shortcoming is summarized as follows: the injection nozzle that uses this kind common configuration, after injection is finished, be the defective that prevents that mold cavity from not filling up, often need pressurize a period of time, promptly screw rod need stay for some time, have only after pressurize is finished, screw rod could retreat again, prepares injection next time, and this just makes that the injection cycle time is long, production efficiency is low, can not satisfy the requirement that people pursue higher economic benefit, people thirst for more effectively shortening injection moulding cycle time, further enhance productivity.
The utility model content
In view of this, the utility model is at the disappearance of prior art existence, and its main purpose provides a kind of pressure maintaining type injection nozzle, and it has does not need to use screw rod just can realize die cavity is carried out the characteristics of pressurize, thereby can effectively shorten the molding cycle time of moulding, enhance productivity greatly.
For achieving the above object, the utility model adopts following technical scheme:
A kind of pressure maintaining type injection nozzle includes fixed nozzle body and flap nozzle body, has an injection flow passage in this fixed nozzle body; This flap nozzle body is set on the fixed nozzle body slidably, has a pressurize chamber in the flap nozzle body, and the front end of this pressurize chamber is communicated with aforementioned injection flow passage, and the rear end of pressurize chamber is provided with the injection switch valve of the back end entrance that is used to open or close the pressurize chamber; In injection process, this injection switch valve is opened, and after injection was finished, this injection switch valve cut out, and this flap nozzle body moves forward compression pressurize chamber volume and forms pressurize.
As a kind of preferred version, be set with first heating collar that is used to heat the plastic melt in the fixed nozzle body on the described fixed nozzle body, and first temperature sensor that on the fixed nozzle body, is fixed with the temperature that is used to control plastic melt in the fixed nozzle body.
As a kind of preferred version, be set with second heating collar that is used to heat the plastic melt in the flap nozzle body on the described flap nozzle body, and second temperature sensor that on the flap nozzle body, is fixed with the temperature that is used to control plastic melt in the flap nozzle body.
As a kind of preferred version, the rear end of described fixed nozzle body radially enlarges and is provided with first limited step, and contracting in the front end corresponding to the flap nozzle body is formed with second limited step, this first limited step and second limited step cooperatively interact against; It is external that the front end of fixed nozzle stretches out flap nozzle.
As a kind of preferred version, the surface carburization of second limited step of described flap nozzle body, hardness is HV950～1100, surface roughness is 0.2～0.8 μ m.
As a kind of preferred version, indent is formed with plurality of grooves and and forms matched in clearance between the pressurize chamber on the surface of described first limited step.
As a kind of preferred version, described groove is semicircle, ellipse or rectangle.
As a kind of preferred version, every 30mm offers the groove that 1～20 road is used to prevent the plastic melt leakage and can reduces resistance to sliding on the surface of described first limited step, and the bilateral gap of this first limiting stand terrace and the indoor wall of pressurize is 0.02～0.2mm.
As a kind of preferred version, the surface carburization of described first limited step, hardness is HV950～1100, surface roughness is 0.2～0.8 μ m.
As a kind of preferred version, the injection flow passage surface carburization in the described fixed nozzle body, hardness is HV950～1100, surface roughness is 0.2～0.8 μ m.
The utility model compared with prior art has tangible advantage and beneficial effect, particularly, and as shown from the above technical solution:
One, this injection nozzle is after injection is finished, by closing the injection switch valve, screw rod is retreated by the pressure of plastic melt, simultaneously, utilize the whole oil cylinder pulling injection seat that moves to move toward the mould direction, the flap nozzle body moves to the mould direction, the pressurize chamber is compressed, and then make the injection switch valve by compression to the interior plastic melt of fixed nozzle body, the pressure of plastic melt is not reduced, realize pressurize, prevent the defective that the die cavity of mould does not fill up the die cavity of mould, this use is novel not to need to use screw rod to the die cavity pressurize, after screw rod is finished injection, just can retreat immediately, prepare injection next time, and then can effectively shorten molding cycle time of moulding, enhance productivity greatly.
Two, by on fixed nozzle body and flap nozzle body, being respectively equipped with first heating collar and second heating collar, make plastic melt can absorb enough heats, keep better flowability, help improving the Forming Quality of working of plastics.
Three, by on fixed nozzle body and flap nozzle body, being respectively arranged with first temperature sensor and second temperature sensor, temperature that can strict control plastic melt, make the temperature of plastic melt more stable, prevent that the temperature of plastic melt is too high or it is low to cross and influence the Forming Quality of working of plastics, guaranteed that moulding does not have forming defect.
For more clearly setting forth architectural feature of the present utility model and effect, come the utility model is elaborated below in conjunction with accompanying drawing and specific embodiment:
Description of drawings
Fig. 1 is the present generally part-structure diagrammatic sketch of the single cylinder injection-moulding device of use;
Fig. 2 is the stereochemical structure diagrammatic sketch of the general injection nozzle of single cylinder injection-moulding device;
Fig. 3 is the section diagrammatic sketch of Fig. 2;
Fig. 4 is that the utility model does not have the configuration diagram under the injection switch valve state;
Fig. 5 is the exploded view of Fig. 4;
Fig. 6 is the section diagrammatic sketch of injection nozzle location under the utility model inject state;
Fig. 7 is the section diagrammatic sketch of injection nozzle location under the utility model packing state;
Fig. 8 is a section diagrammatic sketch of the present utility model.
The accompanying drawing identifier declaration:
1 ', barrel 2 ', the whole oil cylinder that moves
3 ', front template 4 ', the whole oil cylinder pull bar that moves
5 ', injection seat 6 ', piston rod
7 ', screw 8 ', injection cylinder
9 ', injection nozzle 10 ', the injection nozzle body
11 ', the injection switch valve 12 ', drive end bearing bracket
13 ', 14 ', 15 ', heating collar 16 ', injection canal
17 ', screw rod
10, fixed nozzle body 11, injection flow passage
111, injection outlet 112, injection inlet
12, first limited step 121, groove
13, screwed hole 20, flap nozzle body
21, pressurize chamber 22, the second limiting stand terrace
23, screw thread 24, square planar
30, injection switch valve 40, first heating collar
50, first temperature sensor 60, second heating collar
70, second temperature sensor 80, die cavity
90, plastic melt
The specific embodiment:
Please refer to Fig. 4 to shown in Figure 8, it has demonstrated the concrete structure of the preferred embodiment of the utility model,
Include fixed nozzle body 10, flap nozzle body 20, injection switch valve 30, first heating collar 40, first temperature sensor 50, second heating collar 60 and second temperature sensor 70.
Wherein, has an injection flow passage 11 in this fixed nozzle body 10, the surface carburization of this injection flow passage 11, hardness is HV950～1100, surface roughness is 0.2～0.8 μ m, is preferably 0.4 μ m, and smooth being not easy of internal face of injection flow passage 11 worn and torn, injection flow passage 11 is that the face of cylinder is connected with taper seat is smooth, and plastic melt 90 is entered in the die cavity 80 fast.The front end of this injection flow passage 11 is formed with an injection outlet 111, and the rear end of injection flow passage 11 is formed with an injection inlet 112, and this injection outlet 111 is a sphere, can make things convenient for the inlet of the die cavity 80 of outer mold to dock.The rear end of fixed nozzle body 10 radially enlarges and is provided with one first limited step 12, and the surface roughness of this first limited step 12 is 0.2～0.8 μ m, is preferably 0.4 μ m; Surface carburization, hardness are HV950～1100; The length of first limited step is 0.6～2 times of its diameter, is preferably 1 times, makes the enough and smooth abrasion-proof of hardness on first limited step, 12 surfaces.Every 30mm offers 1～20 groove 121 on the surface of first limited step 12, is preferably every 30mm and offers 10 road grooves 121, and this groove 121 is semicircle, is semicircle but do not limit to, and also can be ellipse or rectangle.
This flap nozzle body 20 is set on the aforementioned fixation nozzle body 10 slidably, and the front end of fixed nozzle body 10 stretches out outside the flap nozzle body 20.Has a pressurize chamber 21 in the flap nozzle body 20, the front end of this pressurize chamber 21 is communicated with the injection flow passage 11 of fixed nozzle body 10 with aforementioned injection inlet 112 butt joints, the bilateral gap of the internal face of pressurize chamber 21 and aforementioned first limited step 12 is 0.02～0.2mm, the groove 121 on the internal face of pressurize chamber 21 and aforementioned first limited step 12 surfaces forms matched in clearance, and this groove 121 is used to prevent plastic melt 90 leakages and can reduces the resistance that these flap nozzle body 20 relative fixed nozzle bodies 10 slide.Contracting in the front end of this flap nozzle body 20 is formed with second limited step 22, these second limited step, 22 outer surface nitridings, and hardness is HV950～1100, surface roughness is 0.2～0.8 μ m, makes the enough and smooth abrasion-proof of case hardness of second limited step 22.First limited step 12 of this second limited step 22 and aforementioned fixation nozzle body 10 cooperatively interact against and the moving of restraint nozzle body 20, because the restriction of first limited step 12 and second limited step 22 makes fixed nozzle body 10 hold afterwards and can not hold disengaging mutually before with flap nozzle body 20.When flap nozzle body 20 moved forward, the volume of pressurize chamber 21 was compressed; When flap nozzle body 20 was mobile backward, the volume of pressurize chamber increased.
The self structure of this injection switch valve 30 is existing mature technology, the self structure of injection switch valve 30 is not given a detailed account at this, injection switch valve 30 is arranged at the rear end of aforementioned pressurize chamber 21, by being provided with screw thread 23 in the rear end of aforementioned flap nozzle body 20 periphery, the length of this screw thread 23 is 0.6～2 times of screw thread 23 external diameters, be preferably 1.2 times, be symmetrically arranged with six square planars 24 on the other end surface relative with screw thread 23 ends, these six square planars 24 are used to install torque spanner, screw togather flap nozzle body 20 and injection switch valve 30 fastening by torque spanner.This injection switch valve 30 is used to open or cut out the back end entrance of aforementioned pressurize chamber 21.
This first heating collar 40 is set in outside the aforementioned fixation nozzle body 10, first heating collar 40 is used to heat the plastic melt 90 in the fixed nozzle body 10, to strengthen the flowability of plastic melt 90 in the fixed nozzle body 10, plastic melt 90 is entered in the die cavity 80 fast, increase work efficiency.
This first temperature sensor 50 is installed on the fixed nozzle body 10.The periphery of the injection outlet 111 of close fixed nozzle 10 is provided with screwed hole 13, the degree of depth of this screwed hole 13 is identical with the diameter of screwed hole 13, be used to lay first temperature sensor 50, the minimum range of the deepest point of screwed hole 13 and injection flow passage 11 guarantees that greater than 7mm the intensity of fixed nozzle body 10 is enough.This first temperature sensor 50 is used to control the temperature of plastic melts 90 in the fixed nozzle body 10, prevents that plastic melt 90 is subjected to the temperature of first heating collar, 40 heating too high or cross low and make plastic melt 90 defectives such as carbonization occur, influences the injection moulding quality.
This second heating collar 60 is set in outside the aforementioned flap nozzle body 20, and aforementioned or screw thread 23 planes and square planar 24 of that nozzle body 20 between.Second heating collar 60 is used to heat the plastic melt 90 in the flap nozzle body 20, to strengthen the flowability of plastic melt 90 in the flap nozzle body 20, plastic melt 90 is entered in the die cavity 80 fast, increases work efficiency.
This second temperature sensor 70 is installed on the flap nozzle body 20, second temperature sensor 70 is used to control the temperature of plastic melt 90 in the flap nozzle body 20, prevent that plastic melt 90 is subjected to the temperature of second heating collar 60 heating too high or cross low and make plastic melt 90 defectives such as carbonization occur, influences the injection moulding quality.
The operation principle and the course of work that present embodiment is described in detail in detail are as follows:
During the injection beginning, the relative position of fixed nozzle body 10 and flap nozzle body 20 as shown in Figure 6, the sphere of fixed nozzle body 10 front ends injection outlet 111 and die cavity 80 inlets are close to, injection switch valve 30 is opened, screw rod moves and plastic melt 90 is pressed in the die cavity 80 with certain pressure and flow velocity to the mould direction, meanwhile, the whole oil cylinder pull bar that moves is connected in front template and moves between the oil cylinder along the whole of barrel axis symmetry, the whole oil cylinder that moves connects injection seat, move the oil cylinder pull bar and wholely move oil cylinder injection seat is strained by whole thus, prevent that injection nozzle from leaving mould.
After injection is finished, the back end entrance that injection switch valve 30 cuts out pressurize chamber 21, screw rod retreats while rotating, the relative position of fixed nozzle body 10 and flap nozzle body 20 as shown in Figure 7, the sphere of fixed nozzle body 10 front ends injection outlet 111 and die cavity 80 inlets keep being close to, flap nozzle body 20 moves forward under the whole effect that moves oil cylinder, pressurize chamber 21 is compressed, and then make injection outlet 111 be compressed to the plastic melt 90 of injection switch valve 30, with this pressure holding function that realizes this injection nozzle, prevent to produce the defective that plastic products do not fill up.The distance that flap nozzle 20 moves to the mould direction is the pressure by the programme-control proportional pressure valve, determines the whole pulling force that moves oil cylinder, thereby determines the power of compression injection outlet 111 to the plastic melt 90 of injection switch valve 30, realizes the injection pressurize.
Design focal point of the present utility model is: at first, this injection nozzle is after injection is finished, by closing the injection switch valve, screw rod is retreated by the pressure of plastic melt, simultaneously, utilize the whole oil cylinder pulling injection seat that moves to move toward the mould direction, the flap nozzle body moves to the mould direction, the pressurize chamber is compressed, and then makes the injection switch valve to the interior plastic melt of fixed nozzle body by compression, and the pressure of plastic melt is not reduced, realization is to the pressurize of the die cavity of mould, prevent the defective that plastic products do not fill up, the utility model does not need to use screw rod to the die cavity pressurize, after screw rod is finished injection, just can retreat immediately, prepare injection next time, and then can effectively shorten the molding cycle time of moulding, enhance productivity greatly.Secondly,, make plastic melt can absorb enough heats, keep good flowability, help improving the Forming Quality of working of plastics by on fixed nozzle body and flap nozzle body, being respectively equipped with first heating collar and second heating collar.Moreover, by on fixed nozzle body and flap nozzle body, being respectively arranged with first temperature sensor and second temperature sensor, temperature that can strict control plastic melt, make the plastic melt temperature stabilization, prevent the too high or low excessively Forming Quality that influences working of plastics of temperature of plastic melt, guaranteed that moulding does not have forming defect.
The above, it only is preferred embodiment of the present utility model, be not that technical scope of the present utility model is imposed any restrictions, so every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment did.
Claims (10)
1. a pressure maintaining type injection nozzle is characterized in that: include fixed nozzle body and flap nozzle body, have an injection flow passage in this fixed nozzle body; This flap nozzle body is set on the fixed nozzle body slidably, has a pressurize chamber in the flap nozzle body, and the front end of this pressurize chamber is communicated with aforementioned injection flow passage, and the rear end of pressurize chamber is provided with the injection switch valve of the back end entrance that is used to open or close the pressurize chamber; In injection process, this injection switch valve is opened, and after injection was finished, this injection switch valve cut out, and this flap nozzle body moves forward compression pressurize chamber volume and forms pressurize.
2. pressure maintaining type injection nozzle according to claim 1, it is characterized in that: be set with first heating collar that is used to heat the plastic melt in the fixed nozzle body on the described fixed nozzle body, and first temperature sensor that on the fixed nozzle body, is fixed with the temperature that is used to control plastic melt in the fixed nozzle body.
3. pressure maintaining type injection nozzle according to claim 1, it is characterized in that: be set with second heating collar that is used to heat the plastic melt in the flap nozzle body on the described flap nozzle body, and second temperature sensor that on the flap nozzle body, is fixed with the temperature that is used to control plastic melt in the flap nozzle body.
4. pressure maintaining type injection nozzle according to claim 1, it is characterized in that: the rear end of described fixed nozzle body radially enlarges and is provided with first limited step, contracting in the front end corresponding to the flap nozzle body is formed with second limited step, this first limited step and second limited step cooperatively interact against; It is external that the front end of fixed nozzle stretches out flap nozzle.
5. pressure maintaining type injection nozzle according to claim 4 is characterized in that: the surface carburization of second limited step of described flap nozzle body, hardness are HV950～1100, and surface roughness is 0.2～0.8 μ m.
6. pressure maintaining type injection nozzle according to claim 4 is characterized in that: indent is formed with plurality of grooves and and forms matched in clearance between the pressurize chamber on the surface of described first limited step.
7. pressure maintaining type injection nozzle according to claim 6 is characterized in that: described groove is semicircle, ellipse or rectangle.
8. pressure maintaining type injection nozzle according to claim 6, it is characterized in that: every 30mm offers the groove that 1～20 road is used to prevent the plastic melt leakage and can reduces resistance to sliding on the surface of described first limited step, and the bilateral gap of this first limiting stand terrace and the indoor wall of pressurize is 0.02～0.2mm.
9. pressure maintaining type injection nozzle according to claim 6 is characterized in that: the surface carburization of described first limited step, hardness are HV950～1100, and surface roughness is 0.2～0.8 μ m.
10. pressure maintaining type injection nozzle according to claim 1 is characterized in that: the injection flow passage surface carburization in the described fixed nozzle body, and hardness is HV950～1100, surface roughness is 0.2～0.8 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201853719U CN201721001U (en) | 2010-05-01 | 2010-05-01 | Pressure-retaining injection nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201853719U CN201721001U (en) | 2010-05-01 | 2010-05-01 | Pressure-retaining injection nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201721001U true CN201721001U (en) | 2011-01-26 |
Family
ID=43489290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201853719U Expired - Lifetime CN201721001U (en) | 2010-05-01 | 2010-05-01 | Pressure-retaining injection nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201721001U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830055A (en) * | 2010-05-01 | 2010-09-15 | 广州达意隆包装机械股份有限公司 | Pressure maintaining type injection nozzle |
| CN104890239A (en) * | 2015-05-22 | 2015-09-09 | 浙江大学 | Plastic mouldless forming device |
| CN104924612A (en) * | 2015-05-22 | 2015-09-23 | 浙江大学 | Needle jet |
-
2010
- 2010-05-01 CN CN2010201853719U patent/CN201721001U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830055A (en) * | 2010-05-01 | 2010-09-15 | 广州达意隆包装机械股份有限公司 | Pressure maintaining type injection nozzle |
| CN101830055B (en) * | 2010-05-01 | 2013-04-10 | 广州一道注塑机械有限公司 | Pressure maintaining type injection nozzle |
| CN104890239A (en) * | 2015-05-22 | 2015-09-09 | 浙江大学 | Plastic mouldless forming device |
| CN104924612A (en) * | 2015-05-22 | 2015-09-23 | 浙江大学 | Needle jet |
| CN104924612B (en) * | 2015-05-22 | 2017-03-01 | 浙江大学 | A kind of needle jet |
| CN104890239B (en) * | 2015-05-22 | 2017-03-01 | 浙江大学 | A kind of plastics mould-free forming device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGZHOU YIDAO INJECTION MOLDING MACHINERY CO., L Free format text: FORMER OWNER: GUANGZHOU TECH-LONG PACKING MACHINERY CO., LTD. Effective date: 20110607 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 510530 NO. 23, YUNPU 1ST ROAD, LUOGANG, GUANGZHOU CITY, GUANGDONG PROVINCE TO: 510530 SELF-NUMBERING BUILDING 1, NO. 23, YUNPU 1ST ROAD, LUOGANG, GUANGZHOU CITY, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110607 Address after: 510530, Guangdong Province, Guangzhou, Luogang, Po Road, No. 23, a self-made Patentee after: Guangzhou Yidao Injection Molding Machinery Co., Ltd. Address before: 510530, No. 23, Po pan Road, Guangzhou, Guangdong, Luogang Patentee before: Guangzhou Tech-Long Packing Machinery Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110126 Effective date of abandoning: 20130410 |
|
| RGAV | Abandon patent right to avoid regrant |