CN104608303B - Rotational molding die, and rotational molding method - Google Patents
Rotational molding die, and rotational molding method Download PDFInfo
- Publication number
- CN104608303B CN104608303B CN201310536354.3A CN201310536354A CN104608303B CN 104608303 B CN104608303 B CN 104608303B CN 201310536354 A CN201310536354 A CN 201310536354A CN 104608303 B CN104608303 B CN 104608303B
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- Prior art keywords
- mould
- die cavity
- heat conduction
- rotational molding
- die
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/38—Moulds, cores or other substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/36—Feeding the material on to the mould, core or other substrate
Abstract
The invention discloses a rotational molding die, and a rotational molding method. According to the rotational molding die, a first part mold cavity is arranged in an upper thermal conductive template; a second part mold core is arranged in a lower thermal conductive template; each mold cavity assembly comprises a mold cover and a second part mold cavity detachably connected with the lower part of the mold cover; when a first part is inserted into a mold cover, a sealed second part die cavity is formed by the first part, the mold cover, and a corresponding second part mold cavity; the movable tray is connected with the lower thermal conductive template, and is fixedly provided with a plurality of the mold cavity assemblies, and the first parts are inserted into the mold cavity assemblies. According to the rotational molding method, rotational molding of second parts is realized, and synchronous automatic bonding of the second parts with corresponding first parts can be realized, so that subsequent bonding assembling procedures are avoided, adverse influences of binders on products are avoided, the mold cavity assemblies containing the products can be moved out of the rotational molding die for cooling at the same time, the temperature of the rotational molding die is maintained to be a rotational molding temperature, repeat temperature increasing after die cooling is avoided, molding period is shortened greatly, production cost is reduced, and production efficiency is increased.
Description
Technical field
The present invention relates to Rotomolding techniques field, the rotational forming mould of especially a kind of anaesthesia breathing mask and rotation
Moulding technique.
Background technology
Rotational molding is a kind of process of molding hollow plastic product, referred to as rotational forming or rotational moulding.Rotational molding
It is that toner or resin solution are added in mould, heating mould simultaneously makes it continuously rotate along two mutually perpendicular axles, mould
Interior resin is equably coated with the presence of being melted in gravity and heat and melting adheres to mould inner surface, shape needed for formation
Shape, after obtain product after cooling.
In actual product produces, for during by the part after rotational forming to be connected with other parts assemblies, generally
It is to be formed using glue or solvent bonding manual assembly.
For example, in the manufacturing process of Medical anesthetic breathing mask, it is generally individually by the superstructure of hard and and human body
The soft air cushion structure of contact combines.Conventional this superstructure of employing injection moulding, air cushion is by pvc and silicone rubber etc.
Compound is made as raw material, because the requirement of its material behavior and structure rotational forming typically to be used.When this two
Part combination becomes during mask it is common practice to adopt uv glue or solvent bonding manual assembly, however, the shortcoming of the gluing knot of uv is
High cost, curing process is complicated, and manual assembly is less efficient；Shortcoming using solvent bonding is volatile, irritant
Abnormal smells from the patient.This technique of life-time service all has harmful effect to operator and surrounding air；Further, if product is processed in scattered taste
Deficiency of time when, when patient uses product, the zest abnormal flavour of still residual, causes potential danger to health.
Content of the invention
It is an object of the invention to provide a kind of rotational forming mould and moulding technique, right in prior art to solve
When be connected the part after rotational forming with other parts assemblies, need to cause using glue or solvent bonding manual assembly to increase
Processing sequence, and product can be remained in using glue or solvent bonding and cause the potential problem using danger.
For solving above-mentioned technical problem, present invention offer technical scheme below:
A kind of rotational forming mould 100, it includes heat conduction template 110, lower heat conduction template 120, mould guiding closure dress
Put 130, clamping apparatus 140, movable tray 150 and some die cavity assemblys 160, wherein, be provided with described upper heat conduction template 110
First part die cavity, is correspondingly provided with the second part core 121 in described lower heat conduction template 120, described die cavity assembly 160 wraps
Include: die cap 161 and detachable connection in the second part die cavity 162 below, after the first part 200 embeds die cap 161,
One part 200, die cap 161, the second part die cavity 162 enclose the second part die cavity of sealing, solid in described movable tray 150
Surely it is equiped with the die cavity assembly 160 of some embedded first parts 200, and movable tray 150 inserts lower heat conduction template 120
In；The lower surface of the second part die cavity (162) is fitted with the second part core (121).
Preferably, described clamping apparatus 140 include: at least one locking bail 141 and the locking roller being connected with it
142, locking roller 142 is fixedly connected on the upper surface of heat conduction template 110；Locking bail 141 has fixing end and latch hook end, fixing
End is connected to lower heat conduction template 120 and latch hook end is hooked with locking roller 142 to close and is connected to realize mould 100 locking closure.
Preferably, also include thermal insulation board 170, described thermal insulation board 170 is located at the bottom of lower heat conduction template 120.
The present invention also provides a kind of rotational molding technology method, comprises the following steps:
(1) mould preheating: mould 100 is fixed in revolving burner, under mould 100 closure state, by high-pressure hot steam
Through air intake installation to horizontal admission line, import mould inside heating mould 100 by longitudinal breather line, then through aerofluxuss dress
Put discharge this heat exchange after steam, by control duration of ventilation reach forming temperature, and make mould 100 be in mold into
Material state；
(2) feed and be pre-filled with the first part: weigh quantitative resin solution, be injected in die cavity assembly 160；Will
First part 200 of forming embeds on die cap 161, then the die cavity assembly 160 installing the first part 200 additional is fitted into work
In dynamic pallet 150, movable tray 150 is inserted in lower heat conduction template 120, upper heat conduction template 110 guides closing device through mould
130 Guan Bi moulds 100, through clamping apparatus 140 locked mode；
(3) rotational forming: set plc control parameter, control program starts revolving burner, mould 100 is longitudinal and transverse in revolving burner
It is bonded to one to rotational forming the second part 300 and by first and second part 200,300, after control program end of run, mould
Tool 100 shuts down and is in die opening state, and mould 100 keeps molding state of temperature；
(4) demoulding, cooling and post processing outside mould: product and the movable tray 150 being provided with die cavity assembly 160 will be formed
Take out from lower heat conduction template 120；Movable tray 150 is sent into cooling workshop section by communicated band, opens die cavity after end to be cooled
Assembly 160 takes out integrally formed product；Remove residual material in mould 100, and remove burr on product.
Preferably, the heating-up temperature of rotational forming is set to 140 DEG C～170 DEG C, and heat time heating time is 2～4min.
Preferably, the mould heating-up time is 2～4min.
Preferably, mould rotary speed is 40～60rpm, and live spindle is 1:6 with the rotating ratio of countershaft.
In sum, a kind of rotational forming mould 100 of the present invention, by filling between upper and lower heat conduction template 110,120
With addition of the movable tray 150 being provided with die cavity assembly 160, can not only synchronously realize it in rotational forming the second part 300
With the first part 200 automatic bonding, save follow-up bonding assembling procedure, and the biocompatibility meeting curable product will
Ask it is thus also avoided that binding agent harmful effect that product is caused, and avoid the later stage and there may be potential use risk factor；
In a kind of rotational molding technology of the present invention, due to using die cavity assembly 160 combining movement pallet 150 combinative structure, can
The technique neatly the die cavity assembly 160 comprising product being removed cooling outside mould, and then make lower batch of product enter molding week
Phase, and make mould 100 be always held at rotational forming heating-up temperature, it is to avoid need to repeat to be warming up to after cooling mould 100
Forming temperature process, not only highly shortened product molding cycle, and reduces production cost, improve production efficiency.
Brief description
With embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings；
Fig. 1 is a kind of perspective view of rotational forming mould 100 in the present embodiment；
Fig. 2 is the perspective view of the die cavity assembly 160 adding the first part 200 in Fig. 1；
Fig. 3 is the perspective view of movable tray 150 in Fig. 1；
Fig. 4 is the product plane graph of rotational forming；
Fig. 1 to Fig. 4, wherein,
Rotational forming mould 100, upper heat conduction template 110, lower heat conduction template 120, the second part core 121, mould guiding
Closing device 130, clamping apparatus 140, locking bail 141, locking roller 142, movable tray 150, die cavity assembly 160, die cap
161st, the second part die cavity 162, thermal insulation board 170, the first part 200, the second part 300.
Specific embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also be by addition different concrete realities
The mode of applying is carried out or applies, and the every details in this specification can also be based on different viewpoints and application, without departing from
Carry out various modifications and changes under the spirit of the present invention.
Refer to shown in Fig. 1 to Fig. 4, one of embodiment of the present invention rotational forming mould 100, including upper heat conduction template
110th, lower heat conduction template 120, mould guiding closing device 130, clamping apparatus 140, movable tray 150 and some die cavity assemblys
160, wherein, in described upper heat conduction template 110, it is provided with the first part die cavity, in described lower heat conduction template 120, be correspondingly provided with
Two part cores 121, described die cavity assembly 160 includes: die cap 161 and detachable connection are in the second part die cavity below
162, after the first part 200 embeds die cap 161, the first part 200, die cap 161, the second part die cavity 162 enclose sealing
The second part die cavity, fixation in described movable tray 150 is equiped with the die cavity assemblys 160 of some embedded first parts 200,
And movable tray 150 is inserted in lower heat conduction template 120.
Pass through the movable tray that assembling between upper and lower heat conduction template 110,120 is provided with die cavity assembly 160 in this programme
150, also can not only synchronously realize itself and the first part 200 automatic bonding, not only save in rotational forming the second part 300
Save follow-up bonding assembling procedure, and meet the biocompatibility requirement of curable product it is thus also avoided that binding agent is made to product
The harmful effect becoming, and avoid the later stage and there may be potential use risk factor.
In technique scheme, die cavity assembly 160 includes: die cap 161 and detachable connection are in second below
Part die cavity 162, when mould 100 closes, when the first part 200 lower surface embeds die cap 161, the first part 200 upper surface
With the first part die cavity cooperation in upper heat conduction template 120 and empty avoiding reserves the gap of more than 3mm, this avoids high-temperature heat-conductive template
110 are possible to melt or have influence on the first part 200 shape；The lower surface and the 2nd 0 of the second part die cavity 162 therein
Part core 121 is fitted, and carrys out rotational forming the second part 300 in order to fully mold heat to be conducted in die cavity.In molding fiber crops
In liquor-saturated breathing mask embodiment, this first part 200 is lid on mask, the second part 300 is bottom air cushion.
Clamping apparatus provide coupling mechanism force that resin during mould 100 bidirectional rotation is sealed in die cavity, described locked mode
Device may include that at least one locking bail 141 and the locking roller 142 being connected with it, and locking roller 142 is fixedly connected on
The upper surface of heat conduction template 110, locking bail 141 has fixing end and latch hook end, and locking bail 141 fixing end is connected to lower heat conduction mould
Plate 120, and latch hook end is connected 4 with hooking to close with locking roller 142.In one embodiment of this programme, by arranging one group of locking
Roller 142, and it is respectively provided with one group of locking bail 141 in upper and lower heat conduction template 110,120 two sides, this locking fit structure can
Effectively ensure resin good seal in die cavity.
In a preferred embodiment of this programme, rotational forming mould 100 also includes thermal insulation board 170, described thermal insulation board
170 located at the bottom of lower heat conduction template 120, and the temperature that described thermal insulation board 170 can reduce mould 100 is outwards conducted to lead to heat
Scatter and disappear, improve heat utilization rate.
It is understood that this programme medium-sized cavity combining body 160, the first part die cavity, the quantity of the second part die cavity 161
Should have concordance, particular number setting can be according to product size, template size and revolving burner load, and hot high pressure is steamed
Vapour heat transfer area, and yield comprehensive to determine.In the embodiment of molding anaesthesia breathing mask, in order to realize product
Good forming effect ensures production efficiency again, is preferably set to a mould six cave structure.
In producing product, rotational forming mould 100 is installed in revolving burner, for example a kind of revolving burner, and it includes equipment
Base, it is connected to the equipment supporter of described plant bottom case, external heat is conducted into longitudinal breather line of mould inside, power
Device, air intake installation, exhaust apparatus, actuating device, control box part and balancing weight etc., wherein it is possible to motor as power
Device, air intake installation can include intake valve, air inlet swivel joint and horizontal gas feeding pipe and enter gas branch pipe, described exhaust apparatus
Air bleeding valve, aerofluxuss swivel joint and horizontal discharge duct and exhaust branch pipe, horizontal gas feeding pipe and longitudinal breather can be included
Road square crossing assembling, actuating device can include driving gear and driven tooth wheel disc, and driven tooth wheel disc is fixed on and laterally enters gas
Above pipeline and horizontal discharge duct, mould 100 is fixed on driven tooth wheel disc.
Revolving burner work process is as follows: high temperature vapourss from air inlet through air inlet valve regulation controlling stream amount, by entering cyclone
Adaptor enters horizontal gas feeding pipe, through air intake branch enter longitudinal breather line and flow into mold center with realize mould 100 plus
Heat, motor provides power to drive driving gear transverse rotation, and driving gear transmission drives driven gear, realizes vertical through gear engagement
To rotation, thus driven mold rotates through the rotary shaft that horizontal gas feeding pipe and horizontal discharge duct determine to realize longitudinal rotation
Turn, complete rotational forming, vapourss rise, the cold steam after heat exchange declines through the exhaust branch pipe horizontal discharge duct of entrance, warp
Aerofluxuss swivel joint and air bleeding valve discharge cold steam.
The present invention also provides a kind of rotational molding technology method, such as with anaesthesia breathing mask as molded article, concrete bag
Include following steps:
(1) mould preheating: mould 100 is fixed in revolving burner, under mould 100 closure state, by high-pressure hot steam
Through air intake installation to horizontal admission line, import inside mould 100 by longitudinal breather line heat mould 100, then through arranging
Device of air discharges the steam after this heat exchange, reaches forming temperature by controlling duration of ventilation, and so that mould 100 is in out
Mould feed state, wherein, such as molding heating-up temperature is set to 140 DEG C～170 DEG C, and heat time heating time is 2～3min, when mould heats up
Between be 2～4min,；
(2) feed and be pre-filled with the first part: weigh quantitative resin solution, be injected in die cavity assembly 160；Will
First part 200 of forming embeds on die cap 161, then the die cavity assembly 160 installing the first part 200 additional is fitted into work
In dynamic pallet 150, movable tray 150 is inserted in lower heat conduction template 120, upper heat conduction template 110 guides closing device through mould
130 Guan Bi moulds 100, for example, can be lead and fairlead fit structure, then, through clamping apparatus 140 locked mode；
(3) rotational forming: set plc control parameter, control program starts revolving burner, mould 100 is longitudinal and transverse in revolving burner
To rotational forming the second part 300, and realize first and second part 200,300 and be bonded to one, the rotary speed of such as mould
40～60rpm can be set to, main shaft is 1:6 with the rotating ratio of countershaft；After control program end of run, mould 100 shuts down
And it is in die opening state it is desirable to mould 100 keeps molding state of temperature；
(4) demoulding, cooling and post processing outside mould: product 100 and the movable tray being provided with die cavity assembly 160 will be formed
150 take out from lower heat conduction template 120；Movable tray 150 is sent into cooling workshop section, open type after end to be cooled by communicated band
Cavity combining body 160 takes out integrally formed product；Remove residual material in mould 100, and remove burr on product.
In described rotating mould and rotational molding technology method however it is not limited to the rotational forming of concrete product with mutually interconnect
Connect, as long as being capable of its formed product using this technological means and/or connecting all in the protection domain of this programme.
In a kind of rotational molding technology of the present invention, due to using die cavity assembly 160 and movable tray 150 combination knot
The die cavity assembly 160 comprising product neatly can be removed cooling outside mould by structure, and then makes lower batch of product enter molding week
Phase, and mould 100 is always held at rotational forming heating-up temperature, it is to avoid need to repeat to be warming up to into after cooling mould 100
Type temperature course, not only highly shortened product molding cycle, and reduces production cost, improve production efficiency.
So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
Above-described embodiment only principle of the illustrative present invention and its effect, not for the restriction present invention.Any ripe
The personage knowing this technology all can carry out modifications and changes without prejudice under the spirit and the scope of the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
All equivalent modifications becoming or change, must be covered by the claim of the present invention.
Claims (7)
1. a kind of rotational forming mould (100) is it is characterised in that include upper heat conduction template (110), lower heat conduction template (120), mould
Tool guiding closing device (130), clamping apparatus (140), movable tray (150) and some die cavity assemblys (160), wherein, institute
State and in heat conduction template (110), be provided with the first part die cavity, in described lower heat conduction template (120), be correspondingly provided with the second part type
Core (121), described die cavity assembly (160) includes: die cap (161) and detachable connection are in the second part die cavity below
(162), after the first part (200) embeds die cap (161), the first part (200), die cap (161), the second part die cavity
(162) enclose the second part die cavity of sealing, fixation in described movable tray (150) is equiped with some embedded first parts
(200) die cavity assembly (160), and movable tray (150) inserts in lower heat conduction template (120)；Second part die cavity
(162) lower surface is fitted with the second part core (121).
2. rotational forming mould (100) according to claim 1 is it is characterised in that described clamping apparatus (140) include:
At least one locking bail (141) and the locking roller (142) being connected with it, locking roller (142) is fixedly connected on heat conduction mould
The upper surface of plate (110)；Locking bail (141) has fixing end and latch hook end, fixing end be connected to lower heat conduction template (120) and
Latch hook end is hooked with locking roller (142) to close and is connected to realize mould (100) locking closure.
3. rotational forming mould (100) according to claim 1 and 2 is it is characterised in that also include thermal insulation board (170), institute
State the bottom located at lower heat conduction template (120) for the thermal insulation board (170).
4. a kind of rotational molding technology method is it is characterised in that comprise the following steps:
(1) mould preheating: mould (100) is fixed in revolving burner, under mould (100) closure state, by high-pressure hot steam
Through air intake installation to horizontal admission line, import mould inside heating mould (100) by longitudinal breather line, then through aerofluxuss
Device discharges the steam after this heat exchange, reaches forming temperature by controlling duration of ventilation, and so that mould (100) is in out
Mould feed state；
(2) feed and be pre-filled with the first part: weigh quantitative resin solution, be injected in die cavity assembly (160)；To become
Good the first part (200) of type embeds on die cap (161), then will install die cavity assembly (160) dress of the first part (200) additional
Allocate in movable tray (150), movable tray (150) is inserted in lower heat conduction template (120), upper heat conduction template (110) is through mould
Tool guiding closing device (130) Guan Bi mould (100), through clamping apparatus (140) locked mode；
(3) rotational forming: set plc control parameter, control program starts revolving burner, mould (100) vertical, horizontal in revolving burner
Rotational forming second part (300) and first and second part (200,300) is bonded to one, after control program end of run,
Mould (100) shuts down and is in die opening state, and mould (100) keeps molding state of temperature；
(4) demoulding, cooling and post processing outside mould: product and the movable tray (150) being provided with die cavity assembly (160) will be formed
Take out from lower heat conduction template (120)；Movable tray (150) is sent into cooling workshop section by communicated band, opens after end to be cooled
Die cavity assembly (160) takes out integrally formed product；Remove residual material in mould (100), and remove burr on product.
5. rotational molding technology method according to claim 4 is it is characterised in that the heating-up temperature of rotational forming is set to
140 DEG C～170 DEG C, heat time heating time is 2～4min.
6. with claim rotational molding technology according to claim 4 method it is characterised in that the mould heating-up time is
2～4min.
7. rotational molding technology method according to claim 4 it is characterised in that mould rotary speed be 40～60rpm,
Live spindle is 1:6 with the rotating ratio of countershaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310536354.3A CN104608303B (en) | 2013-11-01 | 2013-11-01 | Rotational molding die, and rotational molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310536354.3A CN104608303B (en) | 2013-11-01 | 2013-11-01 | Rotational molding die, and rotational molding method |
Publications (2)
| Publication Number | Publication Date |
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| CN104608303A CN104608303A (en) | 2015-05-13 |
| CN104608303B true CN104608303B (en) | 2017-02-01 |
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| CN201310536354.3A Active CN104608303B (en) | 2013-11-01 | 2013-11-01 | Rotational molding die, and rotational molding method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106217721B (en) * | 2016-07-20 | 2019-11-22 | 湖北民族学院 | A kind of rotational molding device and its thermoforming process |
| US11584052B2 (en) | 2017-04-26 | 2023-02-21 | Canon Kabushiki Kaisha | Method of producing assembled product and assembling apparatus |
| CN112873650A (en) * | 2021-01-13 | 2021-06-01 | 深圳市卫特新康泰来医疗器械有限公司 | Automatic demoulding mechanism of product |
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| CN101811337A (en) * | 2010-02-11 | 2010-08-25 | 博谊(上海)工业有限公司 | Rotating forming processing device |
| CN201701605U (en) * | 2010-04-12 | 2011-01-12 | 博谊(上海)工业有限公司 | Novel anaesthesia breathing mask |
| CN102553051A (en) * | 2011-12-14 | 2012-07-11 | 李丹青 | Airbag-type integrated anaesthetic mask and processing method thereof |
| CN102921086A (en) * | 2005-07-19 | 2013-02-13 | 瑞思迈研究与开发德国有限公司 | A respiratory mask and method for manufacturing a respiratory mask |
| CN203600502U (en) * | 2013-11-01 | 2014-05-21 | 博谊(上海)工业有限公司 | Rotating forming die |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6602452B2 (en) * | 2001-07-18 | 2003-08-05 | Mcghan Medical Corporation | Rotational molding of medical articles |
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2013
- 2013-11-01 CN CN201310536354.3A patent/CN104608303B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921086A (en) * | 2005-07-19 | 2013-02-13 | 瑞思迈研究与开发德国有限公司 | A respiratory mask and method for manufacturing a respiratory mask |
| CN101811337A (en) * | 2010-02-11 | 2010-08-25 | 博谊(上海)工业有限公司 | Rotating forming processing device |
| CN201701605U (en) * | 2010-04-12 | 2011-01-12 | 博谊(上海)工业有限公司 | Novel anaesthesia breathing mask |
| CN102553051A (en) * | 2011-12-14 | 2012-07-11 | 李丹青 | Airbag-type integrated anaesthetic mask and processing method thereof |
| CN203600502U (en) * | 2013-11-01 | 2014-05-21 | 博谊(上海)工业有限公司 | Rotating forming die |
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| CN104608303A (en) | 2015-05-13 |
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