CN102896764A - Method for forming hollow box body provided with built-in component - Google Patents
Method for forming hollow box body provided with built-in component Download PDFInfo
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- CN102896764A CN102896764A CN201210280239XA CN201210280239A CN102896764A CN 102896764 A CN102896764 A CN 102896764A CN 201210280239X A CN201210280239X A CN 201210280239XA CN 201210280239 A CN201210280239 A CN 201210280239A CN 102896764 A CN102896764 A CN 102896764A
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Abstract
The invention relates to a method for forming a hollow box body provided with a built-in component, which comprises the following steps: a) feeding, wherein two sheets of plasticizing parisons are respectively laid off to two gaps formed by a preformed template and a mold semi-mold; b) closing the mold semi-mold and the preformed template; c) performing the blow molding under high pressure; d) fracturing and fixing the sheet-shaped blanks; e) preheating the parison connected to the built-in component; f) opening a mold, removing the preformed template; g) fixing the built-in component; h) performing secondary closing on the mold; i) cooling a blade position of the mold, and blowing under high pressure to form the hollow box body. The invention provides a method for hollow blow molding of two sheets of plasticizing parisons, which increases the molding quality and yield of the product, the opening on the wall of a container can be reduced to minimum degree, and the invention provides an effective molding method for realizing the low leakage of the hollow box body.
Description
Technical field
The present invention relates to a kind of forming method of blow molding hollow box body, particularly a kind of hollow box body blow molding method that is provided with installed with built-in component is particularly useful for the field that fuel tank blowing is made.
Background technology
The extensive approval that the automobile plastic fuel tank is lightweight with it, security performance good, anticorrosion, shock resistance, long service life and larger design freedom have obtained client.HDPE6 layer coextrusion blow technology with EVOH fuel oil barrier layer is the mainstream technology that current plastic fuel tank is made.Along with the enhancing of world government environmental protection consciousness, relevant policy and rules have proposed strict requirement to automobile main frame maker, and having put into effect PZEV such as California, USA is quasi-zero emission, the rules of＜20mg/24h.For the plastic fuel tank that mainstream technology is produced, its evapo tranpiration discharging comprise gasoline in the leakage of oil tank body, solder side and assembly parts, seal etc. generally at hundreds of mg/24h, so the discharge standard of PZEV is very harsh for plastic fuel tank.Simultaneously because the appearance of main engine plants' power-saving technology such as start-stop and PHEV, obvious all the more in the situation that background noise reduces for the noise that fuel tank internal causes owing to fuel oil rocks, so need to carry in fuel tank inside large-scale washboard structure, the noise that reduce fuel oil rocks, and traditional washboard often can only enter into fuel tank internal with washboard from oil pump opening or parison bottom ports, the washboard size is restricted, so need the larger technological design free degree.
In order to realize these targets, recently some fuel tank manufacturing enterprises all have breakthrough technically, adopt the CORE structure to realize being connected of built-in part and inner wall of oil tank parison by the assembly built-in mechanism of CORE inside when the two parison preformed such as the TSBM technology of INERGY company; The TAPT process using of TI company is based on traditional blow molding process, adopt the certain moduli tool that the fuel tank parison of pre-blow molding is cut the technique that obtains two parisons, after built-in part is connected acquisition with the blowing ducted body of built-in part with the inner wall of oil tank realization.The TSBM technology utilizes the CORE structure to carry out within the long time parison preformed and the built-in process of assembly, is unfavorable for that the design freedom of frock improves, is unfavorable for Hough line Forming Quality, does not possess the good visibility of debug process; And the fuel tank that the TAPT Technology Need is finished moulding at first cuts in two, is unfavorable for improving the production efficiency of fuel tank, and the function of mould is complicated simultaneously, and frock is with high costs.How can be in reduction equipment and product cost, improve the quality of products and the Fixture Design free degree and realize that good process is visual, reduce as far as possible the leakage rate of hollow box body, and can built-in large-scale assembly such as washboard etc., be a problem of needing solution badly.
Summary of the invention
The present invention provides a kind of compared with prior art easy and simple to handle just for the technical problem that exists in the prior art, and cost is lower, quality good, and the Fixture Design free degree is large, can realize the hollow box body blow molding method with large-scale installed with built-in component.
In order to solve the problems of the technologies described above, technical scheme of the present invention is as follows: a kind of hollow box body forming method that is provided with installed with built-in component, it is characterized in that, and said method comprising the steps of:
A) feed, this step are mainly the blanking of two plasticizing parisons difference to two gaps of preformed template and mold halves formation;
B) mold halves and preforming mould plate closing;
C) high pressure blow molding;
D) fracture of lamellar body parison is with fixing;
E) the parison preheating of connection installed with built-in component;
F) mould is opened, and the preformed template withdraws from;
G) installed with built-in component is fixed;
H) mould secondary is closed;
I) mold notch position cooling, blowing forms hollow box body.
As a kind of improvement of the present invention, the edge of a knife position of described mould is provided with the temperature-adjusting device of realizing cold water hot water handoff functionality, behind mold halves and preforming mould plate closing, before the high pressure blow molding, temperature-adjusting device is incubated parison by switching to hot water, parison herein need to be kept higher temperature, mainly is in order to keep the high temperature fused state of parison, to improve final Forming Quality.After the mould secondary closure, temperature-adjusting device switches to cold water, realizes the cooling of mold notch position, and Main Function is the mechanical performance that guarantees product edge of a knife shape and knife-edge part.
As a kind of improvement of the present invention, be provided with heater on the described preformed template, after the high pressure blow molding is finished, heater connects installed with built-in component parison position to needs and heats, heating and temperature control is preferably 150-160 degrees centigrade at 130-170 degrees centigrade, and heater can be contact-type heating device or contactless heater, wherein contact-type heating device is the hot plate heater block, and contactless heater is the infrared heating parts.Generally after the high pressure blow molding is finished 5-10 seconds, the fuel tank profile basically forms, heater on the preformed template contacts under the promotion of cylinder, oil cylinder or motor or the close position that needs to connect the installed with built-in component parison, parison to this place heats, temperature is preferably 150-160 degrees centigrade, Main Function is the uniformity that guarantees the parison temperature, the stability of improving the quality of products, excess Temperature or mistake are low all can to cause the inconsistency of parison temperature, and then affects whole product quality.
As a kind of improvement of the present invention, after the high pressure blow molding is finished, by the cutting part that is arranged on the sheet body forming device blank is cut, realize that the fracture of lamellar body parison is with fixing.The cutter sweep Main Function has been realized cutting apart up and down of parison, satisfy fuel tank quantity-produced needs, in order better to realize cutting function, this cutting part can be provided with temp control switch, in addition, in order to prevent cutting part and parison adhesion, at cutter sweep one deck is set and prevents the coating bonding with parison material HDPE, for example polytetrafluorethylecoatings coatings or other fluorinated hydrocarbons; Wherein, cutting part is that cutter or other have the dispenser of dissection.
As a kind of improvement of the present invention, described installed with built-in component fixing step is, in this step, the robot arm part that the need of clamping are built-in that is fixedly mounted on the main frame moves to the built-in position of need between the mould, on the robot arm with cylinder, the thrust unit such as oil cylinder or motor, be used for the parison of built-in part with mold cavity inside is connected, this connection can be adopted welding, a kind of in the mode of welding or riveted joint, when adopting welding or fusion joining process, generally need to carry out hot plate or infrared preheating before, so that better realize switching performance.
As a kind of improvement of the present invention, be provided with the parison fixture on the described preformed template, in the fracture and fixing step of lamellar body parison, behind the parison fracture, by the parison fixture parison is fixed on mould top.After realizing fracture, main frame leaves die head blanking position, the top of preforming mould panel assembly has the parison fixture, movement by cylinder, oil cylinder or motor pushing baffle plate, realization will be pushed into through the parison top behind the fracture on mould top and auxiliary certain pressure-acting, play that parison top is fixed on the mould upper face, prevent that the parison top in the subsequent step from coming off, the moulding oeverall quality is impacted.
As a kind of improvement of the present invention, be provided with blowning installation on the described preformed template, described blowning installation is the blow head with divergence expression, blow head is set to the porous hollow spherical structure, this structure can realize the even air blowing to all directions, guarantees that all directions position of parison in the preformed process all evenly fits to the die cavity inwall.This structure is different from traditional blow needle that thrusts and blows.This blowing method is pushed two parisons to the mold cavity surface under the high pressure blow-gas effect, realize the first one-step forming of fuel tank upper-lower casing, and this process is often finished within several seconds, and the fuel tank shell moulding of this process has realized the shape of oil tank body substantially; This blowing method can obviously be enhanced productivity, and can form the preferably shape of Hough line, has further guaranteed product quality.
As a kind of improvement of the present invention, also be provided with sealing device on the described preformed template, be used for to sealing between mould, parison and the preformed template, the leakage that not only prevents high pressure blow-gas causes moulding not enough, also prevent from causing with external heat exchange the generation of the rapid reduction of parison temperature, be implemented in parison preformed function in this step with this; Described sealing device is sealing strip.The sealing bar can adopt the organic or inorganic material with some strength, such as polytetrafluoroethylene (PTFE) or magnadure etc., and for the requirement of heat conductivility and loss of weight, better selecting is the light material of magnadure.The overlap parison in the extruding edge of a knife outside when preformed, the sealing of mould, preformed template and parison when realizing preformed, under the effect of pre-blowing pressure, can not produce like this phenomenon of gas leakage, because cause easily parison formation not enough in case produce gas leakage, and cause inside and outside exchange heat, cause undue crystallisation by cooling, the hardening of parison, it is relatively poor to cause the built-in part in later stage to be connected in quality and the knife-edge part fusion quality of parison inboard, thereby affects the quality of whole product.
With respect to prior art, the present invention has following advantage,
(1) with the blow head of divergence expression, can realize the even air blowing of all directions, guarantee that each position of parison evenly fits to the die cavity inwall in the preformed process.This process is complete within several seconds, has not only improved production efficiency, and forms preferably Hough line, guarantees the quality of product.
(2) contact and contactless heater, contact heating generally can be understood as the mode of hot plate heating, and contactless heating generally can be understood as the infrared heating mode.Heat by the parison that need to realize the parison position that built-in part connects to the later stage, prevent that the excessively low poor situation of quality of connection that causes of parison temperature from occuring, this heating function is conducive to the stable of parison surface temperature simultaneously, temperature to link position is controlled, reducing temperature fluctuation, is the scheme of a kind of effective raising installed with built-in component and ducted body quality;
(3) in the parison preformed stage, two parison fractures are later on by the parison fixture, parison is fixed on the mould upper face, prevent that upward overlap was big-eared lower after parison preformed from finishing, when avoiding mould closed in the second time, cause the quality risk that formed product is under contouring, knife-edge part forms the material that becomes silted up;
(4) the preforming mould panel assembly has a sealing strip in the outside of the corresponding edge of a knife, and the sealing of mould, preformed template and parison can not produce the phenomenon of gas leakage like this when realizing preformed under the effect of pre-blowing pressure.
(5) integral body of preforming mould panel assembly has the function of heating, utilize extraneous die heater that the preforming mould panel assembly is heated, temperature generally remains on more than 80 degrees centigrade, prevent in the preformed process in the too fast cooling of the parison of edge of a knife position, be unfavorable for the raising of the edge of a knife quality when final mould is closed.
The invention provides the method for a kind of two plasticizing parison ducted bodies blow molding, realized being connected of installed with built-in component and inner wall of oil tank, weld for example valve with the tradition punching, the parts such as joint are compared, reduced the opening of fuel tank, reduced from the discharging of the HC compound of solder side, reduced the pollution to environment, met the requirement of the Abgasgesetz in special area; Because internally the profile of zero setting part is almost unrestricted, increase the design freedom of large assemblies such as built-in parts such as washboards simultaneously, satisfied better the performance of fuel tank wave resistance noise reduction.The present invention has improved Forming Quality and the finished product rate of product also by the use of preforming mould panel assembly, so that the opening on the chamber wall minimizes, provides an effective forming method for realizing low leakage of moulding hollow box body.
Description of drawings
Fig. 1 is this feed view;
Fig. 2 is this mold halves and preformed template closed schematic diagram first;
Fig. 3 is this preformed template exit status schematic diagram;
Fig. 4 is fixedly schematic diagram of installed with built-in component;
Fig. 5 is mold halves and preformed template secondary closure schematic diagram;
Fig. 6 is that mold halves is opened and prepared to enter the next cycle view;
The Oiltank structure schematic diagram of Fig. 7 for forming.
Among the figure: 1 is parison, and 2 is mold halves, and 3 are the preformed template, and 4 is heater, and 5 is robot arm, 6 is the parison fixture, and 7 is blowning installation, and 8 is sealing strip, and 9 is power set, 10 is base, and 11 is temperature-adjusting device, and 12 is heater, and 13 is fuel tank.
The specific embodiment
In order to deepen the understanding of the present invention, 1-7 couples of the present invention make detailed explanation below in conjunction with accompanying drawing.
Embodiment 1:
A kind of hollow box body forming method that is provided with installed with built-in component said method comprising the steps of:
Referring to Fig. 1, a) feed step, preformed template 3 and mold halves 2 are arranged on the base 10 by power set 9, when two plasticizing parisons begin blanking, preformed template and mold halves move to parison 1 below, and two plasticizing parison 1 difference blankings are to two gaps of preformed template 3 and mold halves 2 formation subsequently.Referring to Fig. 2, b) mold halves 2 and preformed template 3 closures; The edge of a knife position of mould is provided with the temperature-adjusting device 11 of realizing cold water hot water handoff functionality, after mold halves 2 and preformed template 3 closures, before the high pressure blow molding, temperature-adjusting device is incubated parison by switching to hot water, parison herein need to be kept higher temperature, mainly is in order to improve final Forming Quality.C) high pressure blow molding; To be clipped in parison 1 in the middle of mold halves 2 and the preformed template 3 by the air-breathing mold halves 2 blowing preformed that are adjacent to that vacuumize on the blowning installation 7 that carries on the preformed template and/or the mould.D) fracture of lamellar body parison is with fixing; After the high pressure blow molding is finished, by the cutting part that is arranged on the sheet body forming device blank is cut, realize that the fracture of lamellar body parison is with fixing.The cutter sweep Main Function has been realized cutting apart up and down of parison, satisfy fuel tank quantity-produced needs, in order better to realize cutting function, this cutting part can be provided with temp control switch, in addition, in order to prevent cutting part and parison adhesion, at cutter sweep one deck is set and prevents the coating bonding with parison material HDPE, for example polytetrafluorethylecoatings coatings or other fluorinated hydrocarbons; Wherein, cutting part is that cutter or other have the dispenser of dissection.Be provided with parison fixture 6 on the described preformed template, in the fracture and fixing step of lamellar body parison, behind the parison fracture, by parison fixture 6 parison be fixed on mould top.After realizing fracture, main frame leaves die head blanking position, the parison fixture 6 on the top of preforming mould panel assembly, movement by cylinder, oil cylinder or motor pushing baffle plate, realization will be pushed into through the parison top behind the fracture on mould top and auxiliary certain pressure-acting, play that parison top is fixed on the mould upper face, prevent that the parison top in the subsequent step from coming off, the moulding oeverall quality is impacted.E) the parison preheating of connection installed with built-in component; Be provided with heater 4 on the preformed template, after the high pressure blow molding is finished, heater connects installed with built-in component parison position to needs and heats, heating and temperature control is at 130-170 degrees centigrade, be preferably 150-160 degrees centigrade, heater can be contact-type heating device or contactless heater, and wherein contact-type heating device is the hot plate heater block, and contactless heater is the infrared heating parts.Generally after the high pressure blow molding is finished 5-10 seconds, the fuel tank profile basically forms, heater 4 on the preformed template contacts under the promotion of cylinder, oil cylinder or motor or the close position that needs to connect the installed with built-in component parison, parison to this place heats, temperature is preferably 150-160 degrees centigrade, Main Function is the uniformity that guarantees the parison temperature, the stability of improving the quality of products, excess Temperature or mistake are low all can to cause the inconsistency of parison temperature, and then affects whole product quality.Referring to Fig. 3, f) mold halves 2 opens, and preformed template 3 withdraws from mold halves under the drive of power set; Open in the process that withdraws from the preformed template at mould, after the baffle effect through mould vacuum and preforming mould panel assembly, parison has realized mold cavity, and the smooth realization of preforming mould panel assembly separates with mold halves 2 and parison 1 thereof, and withdraws from the position between the mold halves.Referring to Fig. 4, g) installed with built-in component fixes; The installed with built-in component fixing step is, in this step, robot arm 5 part that the need of clamping are built-in that is fixedly mounted on the main frame moves to the built-in position of need between the mold halves 2, on the robot arm 5 with thrust units such as cylinder, oil cylinder or motors, be used for the parison of built-in part with mold cavity inside is connected, this connection can be adopted a kind of in the mode of welding, welding or riveted joint, when adopting welding or fusion joining process, generally need to carry out hot plate or infrared preheating before, so that better realize switching performance.
Referring to Fig. 5, h) the mould secondary closure; After the mould secondary closure, temperature-adjusting device switches to cold water at once, realizes the cooling of mold notch position, and Main Function is the mechanical performance that guarantees product edge of a knife shape and knife-edge part.I) mold notch position cooling, blowing forms hollow box body; At mould for the second time in the closed and final blow molding forming step, robot arm 5 is realized returning initial position with after being connected of installed with built-in component and inner wall of oil tank, and the another set of installed with built-in component of preparation clamping enters the next cycle.Close die half module 2 and pre-shaping parison, this moment, the water channel internal hot-water at mold notch place switched to cold water, during close die knife-edge part is realized cooling, guarantee the mechanical performance of product edge of a knife shape and knife-edge part, the most at last with the pre-shaping parison base blow molding plastic hollow casing of assembly, referring to Fig. 7, also be provided with camera head on robot arm 5 clamping devices in this process, can take the weld parts face that is connected to inwall, and by image recognition link position and shape are monitored, the part that prevents bad connection causes the difference of properties of product, further guarantees product quality.
Embodiment 2:Blowning installation is set to the blow head with divergence expression, and blow head is set to the porous hollow spherical structure, and this structure can realize evenly blowing to all directions, guarantees that all directions position of parison in the preformed process all evenly fits to the die cavity inwall.At mould, namely blow by the blow head on the preformed template after preforming mould panel assembly and the parison closure, pore on the mould also need be opened the function that vacuum suction parison plays assistant formation simultaneously, being used for simultaneously the absorption parison in follow-up process prevents from coming off from die cavity, this structure is different from traditional blow needle that thrusts and blows, this blowing method is pushed two parisons to the mold cavity surface under the high pressure blow-gas effect, realize the first one-step forming of fuel tank upper-lower casing, this process is often finished within several seconds, and the fuel tank shell moulding of this process has realized the shape of oil tank body substantially; This blowing method can obviously be enhanced productivity, and can form the preferably shape of Hough line, has further guaranteed product quality.
Embodiment 3: also be provided with sealing device on the preformed template 2, be used for to sealing between mould, parison and the preformed template, the leakage that not only prevents high pressure blow-gas causes moulding not enough, also prevent from causing with the external heat exchange generation of the rapid reduction of parison temperature, guarantee the preformed realization of parison in this step with this; Described sealing device can be set to sealing strip 8, and sealing strip can adopt the organic or inorganic material with some strength, such as polytetrafluoroethylene (PTFE) or magnadure etc., and for the requirement of heat conductivility and loss of weight, better selecting is the light material of magnadure.The overlap parison in the extruding edge of a knife outside when preformed, the sealing of mould, preformed template and parison when realizing preformed, under the effect of pre-blowing pressure, can not produce like this phenomenon of gas leakage, because cause easily parison formation not enough in case produce gas leakage, and cause inside and outside exchange heat, cause undue crystallisation by cooling, the hardening of parison, it is relatively poor to cause the built-in part in later stage to be connected in quality and the knife-edge part fusion quality of parison inboard, thereby affects the quality of whole product.
Embodiment 4:In order to improve production technology efficient, in parison pre-blowing forming process, can heat action by 12 pairs of installed with built-in component of heater, can also carry out preheating work in the random time of the fixing beginning of installed with built-in component.
Need to prove above-described embodiment, only is preferred embodiment of the present invention, is not to limit protection scope of the present invention, and the equivalents of having done based on the above method all belongs to protection scope of the present invention.
Claims (11)
1. a hollow box body forming method that is provided with installed with built-in component is characterized in that, said method comprising the steps of:
A) feed, this step are mainly the blanking of two plasticizing parisons difference to two gaps of preformed template and mold halves formation;
B) mold halves and preforming mould plate closing;
C) high pressure blow molding;
D) fracture of lamellar body parison is with fixing;
E) the parison preheating of connection installed with built-in component;
F) mould is opened, and the preformed template withdraws from;
G) installed with built-in component is fixed;
H) mould secondary is closed;
I) mold notch position cooling, high pressure blowing forms hollow box body.
2. the hollow box body forming method that is provided with installed with built-in component according to claim 1, it is characterized in that, the edge of a knife position of described mould is provided with the temperature-adjusting device of realizing cold water hot water handoff functionality, behind mold halves and preforming mould plate closing, before the high pressure blow molding, temperature-adjusting device is incubated parison by switching to hot water; After the mould secondary closure, temperature-adjusting device switches to cold water, realizes the cooling of mold notch position.
3. the hollow box body forming method that is provided with installed with built-in component according to claim 1, it is characterized in that, be provided with heater on the described preformed template, after the high pressure blow molding is finished, heater connects installed with built-in component parison position to needs and heats, and heating and temperature control is at 130-170 degrees centigrade.
4. the hollow box body forming method that is provided with installed with built-in component according to claim 1, it is characterized in that, after the high pressure blow molding is finished, by the cutting part that is arranged on the sheet body forming device blank is cut, realize that the fracture of lamellar body parison is with fixing.
5. the described hollow box body forming method that is provided with installed with built-in component of any one claim according to claim 1-4, it is characterized in that, described installed with built-in component fixing step is, by robot arm installed with built-in component is connected to desired location, described connected mode adopts a kind of in welding or welding or the riveted joint.
6. the described hollow box body forming method that is provided with installed with built-in component of any one claim according to claim 1-4, it is characterized in that, be provided with the parison fixture on the described preformed template, in the fracture and fixing step of lamellar body parison, behind the parison fracture, by the parison fixture parison is fixed on mould top.
According to claim the hollow box body forming method that is provided with installed with built-in component stated of 1-4 any one claims, it is characterized in that, be provided with blowning installation on the described preformed template, described blowning installation is the blow head with divergence expression, and blow head is set to the porous hollow spherical structure.
According to claim the hollow box body forming method that is provided with installed with built-in component stated of 1-4 any one claims, it is characterized in that, also be provided with sealing device on the described preformed template.
9. the hollow box body forming method that is provided with installed with built-in component according to claim 7 is characterized in that, described sealing device is sealing strip.
10. the hollow box body forming method that is provided with installed with built-in component according to claim 3, it is characterized in that, described heater is contact-type heating device or contactless heater, wherein contact-type heating device is the hot plate heater block, and contactless heater is the infrared heating parts.
11. the hollow box body forming method that is provided with installed with built-in component according to claim 4 is characterized in that, described cutting part is cutter or dispenser with dissection, and described cutting part is provided with the coating that prevents bonding parison.
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| CN201210280239.XA CN102896764B (en) | 2012-08-08 | 2012-08-08 | Method for forming hollow box body provided with built-in component |
| PCT/CN2012/081100 WO2014023053A1 (en) | 2012-08-08 | 2012-09-07 | Method for forming hollow box body provided with built-in component |
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| CN103358558A (en) * | 2013-07-08 | 2013-10-23 | 亚普汽车部件股份有限公司 | Oil filling port molding method for two-sheet blow molding process and preparation device |
| CN103722728A (en) * | 2014-01-10 | 2014-04-16 | 亚普汽车部件股份有限公司 | Method for forming hollow body of cellular wave-proof plate connected to side surface and novel wave-proof plate |
| CN103753799A (en) * | 2014-01-10 | 2014-04-30 | 亚普汽车部件股份有限公司 | Blow molding fuel tank fixing structure and forming method |
| WO2014180018A1 (en) * | 2013-05-06 | 2014-11-13 | 亚普汽车部件股份有限公司 | Method for forming two-piece blowed hollow box body with auxiliary male die |
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| CN104943201A (en) * | 2015-06-30 | 2015-09-30 | 北京化工大学 | Manipulator control magnetofluid pressing molding device and method |
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| CN110667017A (en) * | 2019-10-08 | 2020-01-10 | 杭州冰玉科技有限公司 | Shaping equipment for positioning luggage accurately by utilizing air pressure |
| CN112706385A (en) * | 2021-01-25 | 2021-04-27 | 亚普汽车部件股份有限公司 | Hollow body built-in part mounting method and auxiliary mechanism |
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| CN103722728A (en) * | 2014-01-10 | 2014-04-16 | 亚普汽车部件股份有限公司 | Method for forming hollow body of cellular wave-proof plate connected to side surface and novel wave-proof plate |
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| CN104943201B (en) * | 2015-06-30 | 2017-03-08 | 北京化工大学 | Manipulator manipulation magnetic fluid pressure presses shaped device and method |
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| CN104924586A (en) * | 2015-07-01 | 2015-09-23 | 宁波方正汽车模具有限公司 | Fuel tank die |
| CN105539125A (en) * | 2016-02-03 | 2016-05-04 | 亚普汽车部件股份有限公司 | Hollow box body inside reinforcing assembly and hollow box body production method |
| CN110667017A (en) * | 2019-10-08 | 2020-01-10 | 杭州冰玉科技有限公司 | Shaping equipment for positioning luggage accurately by utilizing air pressure |
| CN110667017B (en) * | 2019-10-08 | 2021-10-12 | 平湖新仕鑫新材料股份有限公司 | Shaping equipment for positioning luggage accurately by utilizing air pressure |
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