CN101830055B - Pressure maintaining type injection nozzle - Google Patents
Pressure maintaining type injection nozzle Download PDFInfo
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- CN101830055B CN101830055B CN2010101676206A CN201010167620A CN101830055B CN 101830055 B CN101830055 B CN 101830055B CN 2010101676206 A CN2010101676206 A CN 2010101676206A CN 201010167620 A CN201010167620 A CN 201010167620A CN 101830055 B CN101830055 B CN 101830055B
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Abstract
The invention discloses a pressure maintaining type injection nozzle which comprises a fixed nozzle body and a movable nozzle body. An injection flow passage is arranged in the fixed nozzle body. The movable nozzle body is slidably sleeved on the fixed nozzle body. A pressure maintaining chamber is arranged in the movable nozzle body. The front end of the pressure maintaining chamber is communicated with the injection flow passage, and the rear end thereof is provided with an injection switch valve. In the injection process, the injection switch valve is opened. After the injection is completed, the injection switch valve is closed, and the movable nozzle body forwards moves the pressure maintaining chamber and compresses the volume of the pressure maintaining chamber to maintain pressure. The movable nozzle body slides corresponding to the fixed nozzle body to compress the pressure maintaining chamber, the pressure of the plastic melting body is not decreased, the pressure of the mould cavity is maintained, and the defect of incomplete filling of the mould cavity is prevented. The invention has no need of using the screw rod to maintain the pressure of the mould cavity. After the screw rod completes injection, the screw rod can retract immediately and is ready for the next injection, therefore, the forming period of the mould injection piece can be effectively shortened, the production efficiency is enhanced, and the economic benefit is good.
Description
Technical field
The present invention relates to plastify and be injected at the injection mo(u)lding machinery art that different time carries out, refer 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 that production efficiency is high, flexibility (adaptability) of operation to various plastics is strong, can forming shape complicated, accurate in size injection-molded item, be widely used in the 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) first, 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 die profile.
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 is sheared under the double action at external heat and screw spiral, reach the melting 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 namely screw rod stays for some time, and after pressurize was finished, screw rod retreated while rotating, and prepared next time injection.The injection in, whole move oil cylinder 2 ' by be connected to 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 ' symmetrical along the barrel axis, whole oil cylinder 2 ' tail end and the injection seat 5 ' be connected of moving, piston rod 6 ' by whole move oil cylinder pull bar connection screw 7 ', with the whole oil cylinder pull bar 4 ' be connected of moving.The screw rod 17 of barrel 1 ' inner ', 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 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 ' be fixed by screws in injection switch valve 11 ' on, injection switch valve 11 ' by screw fastening 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 the heating collar of plastic melt passage outside, 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 next time injection.
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 batch production, really has progressive, but when using, reality but finds still to have many deficiencies on himself structure and the serviceability, cause the injection nozzle of existing injection machine 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, namely screw rod need stay for some time, only have after pressurize is finished, screw rod could retreat again, prepares next time injection, this just so that the injection cycle time 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.
Summary of the invention
Main purpose of the present invention 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, greatly enhances productivity.
For achieving the above object, the present invention 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, 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, and this injection switch valve is for the rear end entrance of opening or cutting out 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 the first heating collar on the described fixed nozzle body, this first heating collar is used for the plastic melt in the heating fixed nozzle body, to strengthen the flowability of plastic melt in the fixed nozzle body, and on the fixed nozzle body, being fixed with the first temperature sensor, this first temperature sensor is used for the temperature of plastic melt in the control fixed nozzle body.
As a kind of preferred version, be set with the second heating collar on the described flap nozzle body, this second heating collar is used for the plastic melt in the heating flap nozzle body, to strengthen the flowability of plastic melt in the flap nozzle body, and on the flap nozzle body, being fixed with the second temperature sensor, this second temperature sensor is used for the temperature of plastic melt in the control flap nozzle body.
As a kind of preferred version, the rear end of described fixed nozzle body radially enlarges and is provided with the first limited step, inside contract corresponding to the front end of flap nozzle body and to be formed with the second limited step, this first limited step and the second limited step cooperatively interact against and the movement of restraint nozzle body; It is external that the front end of fixed nozzle stretches out flap nozzle.
As a kind of preferred version, the surface carburization of the 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 the 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 1～20 road groove on the surface of described the first limited step, be used for preventing the plastic melt leakage and can reduce resistance to sliding, 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 the 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 present invention compared with prior art has obvious 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, and the pressurize chamber is compressed, and then make the injection switch valve to the interior plastic melt of fixed nozzle body by compression, the pressure of plastic melt is not reduced, realize the pressurize to the die cavity of mould, prevent the defective that the die cavity of mould does not fill up, the present invention does not need to use screw rod to the die cavity pressurize, after screw rod is finished injection, just can retreat immediately, prepare next time injection, and then can effectively shorten molding cycle time of moulding, greatly enhance productivity.
Two, by on fixed nozzle body and flap nozzle body, being respectively equipped with the first heating collar and the second heating collar, make plastic melt can absorb enough heats, keep better flowability, be conducive to improve the Forming Quality of working of plastics.
Three, by on fixed nozzle body and flap nozzle body, being respectively arranged with the first temperature sensor and the second temperature sensor, can strictly control the temperature of plastic melt, make the temperature of plastic melt more stable, prevent the excess Temperature of plastic melt or cross low and affect the Forming Quality of working of plastics, guaranteed that moulding is without forming defect.
For more clearly setting forth architectural feature of the present invention and effect, the present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:
Description of drawings
Fig. 1 is the present generally part-structure diagram of the single cylinder injection-moulding device of use;
Fig. 2 is the stereochemical structure diagram of the general injection nozzle of single cylinder injection-moulding device;
Fig. 3 is the section diagram of Fig. 2;
Fig. 4 is that the present invention is without the configuration diagram under the injection switch valve state;
Fig. 5 is the exploded view of Fig. 4;
Fig. 6 is the section diagram of inject state hemostasis nozzle location of the present invention;
Fig. 7 is the section diagram of packing state hemostasis nozzle location of the present invention;
Fig. 8 is section diagram of the present invention.
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, the 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, the first heating collar
50, the first temperature sensor 60, the second heating collar
70, the second temperature sensor 80, die cavity
90, plastic melt
The specific embodiment:
Please refer to Fig. 4 to shown in Figure 8, the concrete structure that it has demonstrated the present invention's preferred embodiment includes fixed nozzle body 10, flap nozzle body 20, injection switch valve 30, the first heating collar 40, the first temperature sensor 50, the second heating collar 60 and the 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 and taper seat are smoothly connected, 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 sphere, can be conveniently docks with the entrance of the die cavity 80 of outer mold.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 the 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 the first limited step 12 surfaces.Every 30mm offers 1～20 groove 121 on the surface of the 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 fixed 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 docking, the bilateral gap of the internal face of pressurize chamber 21 and aforementioned the first limited step 12 is 0.02～0.2mm, the groove 121 on the internal face of pressurize chamber 21 and aforementioned the first limited step 12 surfaces forms matched in clearance, and this groove 121 is used for preventing plastic melt 90 leakages and can reduces the resistance that these flap nozzle body 20 relative fixed nozzle bodies 10 slide.The front end of this flap nozzle body 20 inside contracts and is formed with the second limited step 22, these the 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 the second limited step 22.The first limited step 12 of this second limited step 22 and aforementioned fixed nozzle body 10 cooperatively interact against and the movement of restraint nozzle body 20, because the restriction of the first limited step 12 and the second limited step 22, so that end can not break away from mutually with end before the flap nozzle body 20 after the fixed nozzle body 10.When flap nozzle body 20 moved forward, the volume of pressurize chamber 21 was compressed; When flap nozzle body 20 moved 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 on the periphery of the rear end of aforementioned flap nozzle body 20, being provided with screw thread 23, 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 for installing torque spanner, screw togather flap nozzle body 20 and injection switch valve 30 fastening by torque spanner.This injection switch valve 30 is for the rear end entrance of opening or cutting out aforementioned pressurize chamber 21.
This first heating collar 40 is set in outside the aforementioned fixed nozzle body 10, the first heating collar 40 is used for the plastic melt 90 in the heating fixed nozzle body 10, to strengthen the flowability of fixed nozzle body 10 interior plastic melts 90, 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 for laying the 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 for the temperature of control fixed nozzle body 10 interior plastic melts 90, prevents that plastic melt 90 is subjected to the excess Temperature of the first heating collar 40 heating or crosses low and make plastic melt 90 defectives such as carbonization occur, affects 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.The second heating collar 60 is used for the plastic melt 90 in the heating flap nozzle body 20, to strengthen the flowability of flap nozzle body 20 interior plastic melts 90, 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, the second temperature sensor 70 is used for the temperature of control flap nozzle body 20 interior plastic melts 90, prevent that plastic melt 90 is subjected to the excess Temperature of the second heating collar 60 heating or crosses low and make plastic melt 90 defectives such as carbonization occur, affects the injection moulding quality.
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, sphere and die cavity 80 entrances of fixed nozzle body 10 front ends injection outlet 111 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 the whole oil cylinder that moves is strained injection seat by whole thus, prevent that injection nozzle from leaving mould.
After injection is finished, the rear 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, sphere and die cavity 80 entrances of fixed nozzle body 10 front ends injection outlet 111 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 so that injection outlet 111 is compressed to the plastic melt 90 of injection switch valve 30, with this pressure holding function that realizes this injection nozzle, prevent 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 that compression injection outlet 111 to the power of the plastic melt 90 of injection switch valve 30, realizes the injection pressurize.
In sum, design focal point of the present invention 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, and the pressurize chamber is compressed, and then make the injection switch valve to the interior plastic melt of fixed nozzle body by compression, the pressure of plastic melt is not reduced, realize the pressurize of the die cavity of mould is prevented the defective that plastic products do not fill up, the present invention does not need to use screw rod to the die cavity pressurize, after screw rod is finished injection, just can retreat immediately, prepare next time injection, and then can effectively shorten molding cycle time of moulding, greatly enhance productivity.Secondly, by on fixed nozzle body and flap nozzle body, being respectively equipped with the first heating collar and the second heating collar, make the plastic melting physical efficiency absorb enough heats, keep good flowability, be conducive to improve the Forming Quality of working of plastics.Moreover, by on fixed nozzle body and flap nozzle body, being respectively arranged with the first temperature sensor and the second temperature sensor, can strictly control the temperature of plastic melt, make the plastic melt temperature stabilization, prevent the excess Temperature of plastic melt or cross the low Forming Quality that affects working of plastics, guaranteed that moulding is without forming defect.
The above, it only is preferred embodiment of the present invention, be not that technical scope of the present invention is imposed any restrictions, so every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any trickle modification, equivalent variations and modification that above embodiment does.
Claims (9)
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, 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, and this injection switch valve is for the rear end entrance of opening or cutting out the pressurize chamber; The rear end of described fixed nozzle body radially enlarges and is provided with the first limited step, inside contract corresponding to the front end of flap nozzle body to be formed with the second limited step, this first limited step and the second limited step cooperatively interact against and the movement of restraint nozzle body; It is external that the front end of fixed nozzle stretches out flap nozzle, and 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 the first heating collar on the described fixed nozzle body, this first heating collar is used for the plastic melt in the heating fixed nozzle body, to strengthen the flowability of plastic melt in the fixed nozzle body, and on the fixed nozzle body, being fixed with the first temperature sensor, this first temperature sensor is used for the temperature of plastic melt in the control fixed nozzle body.
3. pressure maintaining type injection nozzle according to claim 1, it is characterized in that: be set with the second heating collar on the described flap nozzle body, this second heating collar is used for the plastic melt in the heating flap nozzle body, to strengthen the flowability of plastic melt in the flap nozzle body, and on the flap nozzle body, being fixed with the second temperature sensor, this second temperature sensor is used for the temperature of plastic melt in the control flap nozzle body.
4. pressure maintaining type injection nozzle according to claim 1, it is characterized in that: the surface carburization of the second limited step of described flap nozzle body, hardness are HV950～1100, surface roughness is 0.2～0.8um.
5. pressure maintaining type injection nozzle according to claim 1 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 the first limited step.
6. pressure maintaining type injection nozzle according to claim 5 is characterized in that: described groove is semicircle, ellipse or rectangle.
7. pressure maintaining type injection nozzle according to claim 5, it is characterized in that: every 30mm offers 1～20 road groove on the surface of described the first limited step, be used for preventing the plastic melt leakage and can reduce resistance to sliding, and the bilateral gap of this first limiting stand terrace and the indoor wall of pressurize is 0.02～0.2mm.
8. pressure maintaining type injection nozzle according to claim 5, it is characterized in that: the surface carburization of described the first limited step, hardness are HV950～1100, surface roughness is 0.2～0.8um.
9. 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 0.2～0.8um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101676206A CN101830055B (en) | 2010-05-01 | 2010-05-01 | Pressure maintaining type injection nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101676206A CN101830055B (en) | 2010-05-01 | 2010-05-01 | Pressure maintaining type injection nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN101830055A CN101830055A (en) | 2010-09-15 |
| CN101830055B true CN101830055B (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101676206A Active CN101830055B (en) | 2010-05-01 | 2010-05-01 | Pressure maintaining type injection nozzle |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108381849B (en) * | 2018-03-02 | 2024-08-13 | 深圳市港源微键技术有限公司 | Glue injection assembly for injection device, injection molding machine and injection molding method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1460088A (en) * | 1973-10-30 | 1976-12-31 | Bekum Maschf Gmbh | Apparatus for moulding hollow bodies from thermoplastics material |
| CN1072881A (en) * | 1989-10-12 | 1993-06-09 | 世纪工业株式会社 | Improved pressure-holding chamber type injection molding process and equipment |
| JP2002028949A (en) * | 2000-07-19 | 2002-01-29 | Sumitomo Heavy Ind Ltd | Injection molding machine |
| CN201721001U (en) * | 2010-05-01 | 2011-01-26 | 广州达意隆包装机械股份有限公司 | Pressure-retaining injection nozzle |
-
2010
- 2010-05-01 CN CN2010101676206A patent/CN101830055B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1460088A (en) * | 1973-10-30 | 1976-12-31 | Bekum Maschf Gmbh | Apparatus for moulding hollow bodies from thermoplastics material |
| CN1072881A (en) * | 1989-10-12 | 1993-06-09 | 世纪工业株式会社 | Improved pressure-holding chamber type injection molding process and equipment |
| JP2002028949A (en) * | 2000-07-19 | 2002-01-29 | Sumitomo Heavy Ind Ltd | Injection molding machine |
| CN201721001U (en) * | 2010-05-01 | 2011-01-26 | 广州达意隆包装机械股份有限公司 | Pressure-retaining injection nozzle |
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| CN101830055A (en) | 2010-09-15 |
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Address after: 510663 Guangdong, China Hi tech Industrial Development Zone, Guangzhou, No. 19 Shenzhou Road, building on the third floor of the third floor Patentee after: UNIQUE INJECTION MOLDING SYSTEM CO.,LTD. Address before: 510530, Guangdong Province, Guangzhou, Luogang, Po Road, No. 23, a self-made Patentee before: Guangzhou Unique Injection Molding Systems Co.,Ltd. |
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Effective date of registration: 20230403 Address after: 271411, 180 meters southeast of Houhaizi Village, Ningyang Economic Development Zone, Tai'an City, Shandong Province (east of Fushan Road and south of Hexing Packaging) Patentee after: TAI'AN JINTAI PLASTIC PRODUCTS CO.,LTD. Address before: 510663 the 1 1 buildings of Shenzhou Road No. 19, high tech Industrial Development Zone, Guangdong, China Patentee before: UNIQUE INJECTION MOLDING SYSTEM CO.,LTD. |