CN102744820B - Dual-inflating structure of work arm of rotational molding machine - Google Patents

Dual-inflating structure of work arm of rotational molding machine Download PDF

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Publication number
CN102744820B
CN102744820B CN201210246372.3A CN201210246372A CN102744820B CN 102744820 B CN102744820 B CN 102744820B CN 201210246372 A CN201210246372 A CN 201210246372A CN 102744820 B CN102744820 B CN 102744820B
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China
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inflation
gas
countershaft
interior
main shaft
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CN102744820A (en
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孙罗娇
罗宏宇
宋蕊
王晓平
黄天才
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Deshun Container Co., Ltd., Cixi City
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DESHUN CONTAINER Co Ltd CIXI CITY
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Abstract

The invention discloses a dual-inflating structure of a work arm of a rotational molding machine, and relates to the structure of a work arm of a rotational molding machine for manufacturing hollow rotationally molded products from plastic powder. The dual-inflating structure comprises a spindle, an auxiliary shaft, an arm head, a disk gear, a mandrel and the like. The structure is technically characterized in that the dual-inflating structure is additionally arranged in the work arm of the rotational molding machine and mainly consists of an inflating connector, an inflating tube and the like, an inner inflating port and an outer inflating port are arranged on the inflating connector, an inflating channel is formed between the inflating tube and the spindle, a middle gas inlet channel and a bias gas inlet channel are further correspondingly disposed in the arm head, an inner gas outlet hole, an outer gas outlet hole, an inner gas outlet channel and an outer gas outlet channel are arranged on the mandrel, and dual-inflating routes includes a constant-pressure inflating route and a high-pressure inflating route. Accordingly, an automatic dual-inflating function for providing gases at different pressures to the inside of a rotational molding mold can be realized. By means of additionally arranging the automatic dual-inflating structure into the work arm, the rotational molding machine has the advantages that processing time is shortened, energy is saved, the quality of the rotationally molded products is enhanced, production efficiency is improved, and the like.

Description

A kind of two inflatable structures of rotational molding machine working arm
Technical field
The present invention relates to the two inflatable structures in a kind of plant equipment, refer in particular to the two inflatable structures for rotational molding machine working arm in a kind of hollow plastic product device of rotomoulding forming.
Background technology
Rotational molding machine is a kind of rotomoulding apparatus that adopts plastic powder to make hollow rotomoulded articles, it mainly drives the Plastic Rolling Molds after thermally equivalent to rotate around X-axis and Y-axis by a working arm, make the plastic powder of melting in Plastic Rolling Molds under Action of Gravity Field, be coated with uniformly, adhere to the whole inner surface of Plastic Rolling Molds, thereby make rotomoulded articles moulding, after cooling and shaping, die sinking can be taken out finished product again.The working arm arm type adopting in rotational molding machine is at present taking straight-arm as main, this straight-arm is to be mainly made up of main shaft, countershaft, arm head, mandrel etc., wherein main shaft output connects arm head, countershaft output is connected with the mandrel in arm head and the transmission that is used as power by the dish gear being meshed, and Plastic Rolling Molds is mainly arranged on the dish gear of mandrel.
Above-mentioned this rotational molding machine working arm is in whole production process, especially in the most important heating process of rotomoulded articles, be all not possess automatic inflating function, that is to say in the time that working arm drives Plastic Rolling Molds to enter baking oven in to heat, thermal source only acts on the outer surface of Plastic Rolling Molds, and cannot realize heating for Plastic Rolling Molds inner surface, so both caused extending heating time, affect operating efficiency, also wasted a large amount of heat energy, particularly in the time making complicated rotomoulded articles, iff the heating that relies on Plastic Rolling Molds outer surface, may have dead angle is difficult to be heated, this makes rotomoulded articles occur the phenomenon that wall unevenness is even because heating is uneven, or occur that open defect causes rotomoulded articles to scrap.
Disclosed China Patent No. is that 200820167983.8 " rotational molding machine " disclosed a kind of through hole that is provided with in Plastic Rolling Molds, and distinguish the rotational molding machine structure of connecting through hole and air compressor by external pipeline, the Main Function of this structure is to provide plenum by air compressor in to Plastic Rolling Molds in the time that Plastic Rolling Molds is cooling, make to fit tightly between rotomoulded articles and Plastic Rolling Molds, thereby avoid rotomoulded articles to produce deformation in cooling forming process, improve yield rate.But, the inflation of this patent structure only acts on the cooling procedure of Plastic Rolling Molds, because inflatable structure design is too simple and crude, while heating in Plastic Rolling Molds enters baking oven, this inflatable structure obviously cannot normally be worked, therefore exist compared with macrostructure defect, and this patent or a kind of normal pressure list inflatable structure, when manufacturing when massive rotationally moulded products, often cannot make to provide in Plastic Rolling Molds sufficient gases at high pressure, and then cannot promote rotomoulded articles quality, and affect the raising of operating efficiency.
Summary of the invention
Technical problem to be solved by this invention be to overcome the defect of prior art and provide a kind of can be to carrying out automatically two inflatable structures of the rotational molding machine working arms of two inflations in Plastic Rolling Molds, and make by this rotational molding machine working arm structures of two inflations automatically that rotational molding machine has the process time of shortening, the saving energy, lifting rotomoulded articles quality, the advantage such as enhance productivity.
Technical problem of the present invention is achieved through the following technical solutions:
Two inflatable structures for rotational molding machine working arm, comprise main shaft and countershaft, and this main shaft is provided with the spindle sprocket that drive shaft is rotated, and this countershaft is provided with the countershaft sprocket that drives countershaft to rotate; Described main shaft output is connected on arm head, in this arm head, be provided with the mandrel with bearing supporting, between this mandrel one end and countershaft output, be respectively equipped with the dish gear transmitting that engages and be used as power, and on the dish gear of mandrel, Plastic Rolling Molds is installed, described main shaft input end or countershaft input are provided with the gas-charging connection that sealing is installed, this gas-charging connection is provided with interior inflation inlet and outer inflation inlet, in main shaft or in countershaft, be provided with the rotate gas tube of supporting of bearing, between this gas tube and main shaft or countershaft, form filling channel; Described interior inflation inlet is connected with filling channel, and outer inflation inlet is connected with gas tube input;
In described arm head, be provided with middle inlet channel and inclined to one side inlet channel; In mandrel, be provided with while and the interior outlet passageway being connected in Plastic Rolling Molds and outer outlet passageway, be also provided with interior venthole and outer venthole, this interior venthole is connected with interior outlet passageway, and outer venthole is connected with outer outlet passageway;
Described gas tube output is connected on arm head, and the interior venthole on middle inlet channel, mandrel in this gas tube output, arm head and the interior outlet passageway in mandrel are all done sealing and be communicated with; Outer outlet passageway in inclined to one side inlet channel in described filling channel, arm head, outer venthole and the mandrel on mandrel is all done sealing and is communicated with.
Described gas-charging connection is connected to main shaft input end, is provided with the inflation adapter that sealing is installed in this gas-charging connection and main shaft, and input sealing is taken in this inflation, and is provided with interior aperture and outer aperture on inflation is taken over; Described inflation is taken over bearing supporting and is arranged in gas-charging connection and main shaft; Described gas tube is arranged in main shaft with bearing supporting, between this gas tube and main shaft, forms filling channel; Described gas tube input stretches in described inflation adapter, and this gas tube input is connected in taking over inflation, between gas tube and inflation adapter, forms gas-filled gap, and this gas-filled gap is connected with described filling channel; The outer aperture of described outer inflation inlet on inflation is taken over is connected in taking over inflation, and then is communicated with gas tube input; The interior aperture of described interior inflation inlet on inflation is taken over is connected with gas-filled gap, and then is communicated with filling channel.
Described countershaft input is arranged in gas-charging connection with bearing supporting, and this countershaft input is provided with air-filled pore, this gas-charging connection input sealing; Described gas tube is arranged in countershaft with bearing supporting, and forms filling channel between gas tube and countershaft; Described outer inflation inlet is connected with gas tube input; The air-filled pore of described interior inflation inlet on countershaft is connected with filling channel.
Two inflation routes of described rotational molding machine working arm comprise normal pressure inflation route and high-pressure aerated route.
Described normal pressure inflation route be that gas enters in Plastic Rolling Molds by outer inflation inlet, outer aperture, inflation adapter, gas tube, middle inlet channel, interior venthole, interior outlet passageway successively; Or gas enters in Plastic Rolling Molds by outer inflation inlet, gas-charging connection, gas tube, middle inlet channel, interior venthole, interior outlet passageway successively.
Described high-pressure aerated route is that gas enters in Plastic Rolling Molds by interior inflation inlet, interior aperture, gas-filled gap, filling channel, inclined to one side inlet channel, outer venthole, outer outlet passageway successively; Or gas enters in Plastic Rolling Molds by interior inflation inlet, air-filled pore, filling channel, inclined to one side inlet channel, outer venthole, outer outlet passageway successively.
Described countershaft is arranged on outside main shaft, and this main shaft, with the supporting that rotates of the bearing in bearing block, is provided with the bearing of the supporting that rotates between this countershaft and main shaft.
Described main shaft is arranged on outside countershaft, and this main shaft, with the supporting that rotates of the bearing in bearing block, is provided with the bearing of the supporting that rotates between this countershaft and main shaft.
Compared with prior art, the present invention has additional two inflatable structures in rotational molding machine working arm, this pair of inflatable structure mainly comprises gas-charging connection, gas tube etc., and in arranging on gas-charging connection, outer inflation inlet, between gas tube and main shaft, form filling channel, corresponding middle inlet channel and the inclined to one side inlet channel of also arranging in arm head, in mandrel is provided with, outer venthole and in, outer outlet passageway, this pair of inflation route comprises normal pressure inflation route and high-pressure aerated route, therefore can realize to automatically two aerification functions that different pressures gas is provided in Plastic Rolling Molds, and by set up this two inflatable structures automatically in working arm, can make rotational molding machine possess shortening process time, save the energy, promote rotomoulded articles quality, the advantage such as enhance productivity.
Brief description of the drawings
Fig. 1 is the cross-sectional schematic of the first structure of the present invention.
Fig. 2 is the A place enlarged drawing of Fig. 1.
Fig. 3 is the B place enlarged drawing of Fig. 1.
Fig. 4 is the profile schematic diagram of the first structure of the present invention.
Fig. 5 is the cross-sectional schematic of the second structure of the present invention.
Fig. 6 is the C place enlarged drawing of Fig. 5.
Fig. 7 is the D place enlarged drawing of Fig. 5.
Fig. 8 is the profile schematic diagram of the second structure of the present invention.
Detailed description of the invention
To elaborate again to the embodiment of the present invention by above-mentioned accompanying drawing below.
As shown in Fig. 1~Fig. 8,1. outer inflation inlet, 2. interior inflation inlet, 3. gas-charging connection, 4. inflation take over, 5. spindle sprocket, 6. main shaft, 7. bearing block, 8. gas tube, 9. countershaft sprocket, 10. inlet channel, 21. interior outlet passageways, 22. outer outlet passageways, 23. outer ventholes, 24. interior ventholes, 25. air-filled pores in countershaft, 11. dish gears, 12. mandrels, 13. arm heads, 14. annular grooves, 15. outer apertures, 16. filling channels, 17. gas-filled gap, 18. interior apertures, 19. inclined to one side inlet channels, 20..
A kind of two inflatable structures of rotational molding machine working arm, as shown in Fig. 1, Fig. 4, Fig. 5, Fig. 8, it is the working arm structure on a kind of rotational molding machine that adopts plastic powder making hollow rotomoulded articles, two inflatable structures that the present embodiment adopts are arranged in the working arm that arm type is straight-arm, this working arm comprises main shaft 6 and countershaft 10, this main shaft is provided with the spindle sprocket 5 that drive shaft is rotated, and this countershaft is provided with the countershaft sprocket 9 that drives countershaft to rotate.
The two inflatable structures of described working arm mainly comprise two kinds of versions, the first structure is as shown in Fig. 1 ~ Fig. 4, main shaft 6 is with the supporting that rotates of the bearing in bearing block 7, countershaft 10 is arranged on outside main shaft 6, and between countershaft and main shaft, be also provided with rotate supporting bearing, therefore main shaft 6 at interior, countershaft 10 outside, can independent rotation between major and minor axle.
Described main shaft 6 inputs are provided with as shown in Figure 2 the gas-charging connection 3 fixing with main shaft, this gas-charging connection is provided with interior inflation inlet 2 and outer inflation inlet 1, these two inflation inlets connect air pump and can inflate simultaneously, normally at interior inflation inlet 2 for being filled with gases at high pressure, outer inflation inlet 1 is for being filled with atmosphere gas; In described gas-charging connection 3, be provided with the inflation adapter 4 that sealing is installed, this inflation is taken over input and is done sealing processing, inflation is taken over output and is extended in main shaft 6 always, and do supporting with the bearing in gas-charging connection 3 and main shaft 6 and rotate, this inflation is taken on 4 and is also provided with interior aperture 18 and outer aperture 15, for the inside and outside inflation inlet of the corresponding connection of difference, outer inflation inlet 1 is taken in 4 and is connected with inflation through outer aperture 15; Described inside and outside inflation inlet is on the inwall of gas-charging connection 3, to be provided with annular groove 14 structures with the connectivity structure of inside and outside aperture respectively, also can not have influence on connection situation and can make inflation take over 4 by annular groove after rotation.
In described main shaft 6, be provided with a gas tube 8, this gas tube input stretches into inflation and takes in 4, and is connected in taking over inflation; Between described gas tube 8 and main shaft 6, form filling channel 16, gas tube and inflation form gas-filled gap 17 between taking over 4, this filling channel 16 is connected with gas-filled gap 17, and the interior aperture 18 that the interior inflation inlet 2 on gas-charging connection 3 is taken on 4 by inflation is connected with gas-filled gap 17; Described gas tube 8 outputs are connected on arm head 13.
Described main shaft 6 outputs are provided with the fixing arm head 13 that is threaded as shown in Figure 3, in this arm head, be provided with the mandrel 12 rotating with bearing supporting, this mandrel and main shaft 6 are at right angle setting relation, described mandrel 12 one end are provided with dish gear 11, this dish gear is arranged on pinion stand, on dish gear 11, Plastic Rolling Molds is also installed; Described countershaft 10 outputs are also provided with the fixing dish gear 11 of screw, the transmission that is meshed and is used as power of dish gear on this countershaft and the dish gear of mandrel 12 one end, between dish gear on countershaft 10 and arm head 13, be provided with bearing supporting, therefore can not produce movement interference between the dish gear 11 on arm head and countershaft.
In described arm head 13, be provided with middle inlet channel 20 and inclined to one side inlet channel 19, and gas tube 8 outputs are threaded on arm head 13, and are connected with the middle inlet channel 20 in arm head, 16 of filling channels are connected with inclined to one side inlet channel 19; In described mandrel 12, be provided with interior outlet passageway 21 and outer outlet passageway 22, the axial line that this inside and outside outlet passageway is all parallel to mandrel 12 arranges, and be connected with in Plastic Rolling Molds, in this mandrel 12, be also provided with the interior venthole 24 of outlet passageway 21 and the outer venthole 23 of the outer outlet passageway 22 of connection in being communicated with respectively; simultaneously Middle inlet channel 20 in described arm head 13 is done sealing with the interior venthole 24 of mandrel 12 again and is communicated with, inclined to one side inlet channel 19 in arm head 13 is done sealing with the outer venthole 23 of mandrel 12 again and is communicated with, and being communicated with between middle inlet channel 20 and interior venthole 24, being communicated with between inlet channel 19 and outer venthole 23 is to be mainly provided with annular groove 14 structures on arm head 13 inwalls partially, make also can not have influence on connection situation after mandrel 12 rotations by annular groove like this.
The main shaft 6 of this rotational molding machine working arm outside and then is respectively realized by spindle sprocket 5 and countershaft sprocket 9 structure that power transmits at interior, countershaft 10 and can greatly facilitate the countershaft sprocket 9 on countershaft 10 and the improvement of coiling gear 11, it can need to increase countershaft sprocket 9 or dish gear 11 diameters according to the actual use of rotational molding machine, increase countershaft sprocket 9 or dish gear 11 numbers of teeth, the corresponding output torque that also strengthens working arm, therefore more can be applicable to carry out on massive rotationally moulded machine the processing of massive rotationally moulded products.
Two inflation routes in this rotational molding machine working arm mainly comprise normal pressure inflation route and high-pressure aerated route; Described normal pressure inflation route is that air pump enters atmosphere gas in Plastic Rolling Molds by outer inflation inlet 1, outer aperture 15, inflation adapter 4, gas tube 8, middle inlet channel 20, interior venthole 24, interior outlet passageway 21 successively by gas main; Described high-pressure aerated route is that air pump enters gases at high pressure in Plastic Rolling Molds by interior inflation inlet 2, interior aperture 18, gas-filled gap 17, filling channel 16, inclined to one side inlet channel 19, outer venthole 23, outer outlet passageway 22 successively by gas main.
The second structure of the described two inflatable structures of rotational molding machine working arm is as shown in Fig. 5 ~ Fig. 8, main shaft 6 is with the supporting that rotates of the bearing in bearing block 7, countershaft 10 is arranged in main shaft 6, and between countershaft and main shaft, be also provided with rotate supporting bearing, therefore main shaft 6 outside, countershaft 10 is interior, can independent rotation between major and minor axle.
Described countershaft 10 inputs are arranged in gas-charging connection 3 with bearing supporting as shown in Figure 5, Figure 6, this countershaft input is provided with air-filled pore 25, this gas-charging connection input is done sealing and is processed, on gas-charging connection 3, be also provided with interior inflation inlet 2 and outer inflation inlet 1, these two inflation inlets connect air pump and can inflate simultaneously, normally at interior inflation inlet 2 for being filled with gases at high pressure, outer inflation inlet 1 is for being filled with atmosphere gas; Described gas tube 8 is arranged in countershaft 10 with bearing supporting, and forms filling channel 16 between gas tube and countershaft; Described outer inflation inlet 1 is connected with gas tube 8 inputs, and the air-filled pore 25 of interior inflation inlet 2 on countershaft 10 is connected with filling channel 16.
Described main shaft 6 outputs, countershaft 10 outputs and gas tube 8 output syndetons are as shown in Fig. 5, Fig. 7, Fig. 8, main shaft output is provided with the fixing arm head 11 that is threaded, in this arm head 11, be provided with the mandrel 12 rotating with bearing supporting, this mandrel and main shaft 6 are at right angle setting relation, described mandrel 12 one end are provided with dish gear 11, on this dish gear, Plastic Rolling Molds are installed; Described countershaft 10 outputs are also provided with the fixing dish gear 11 of screw, the transmission that is meshed and is used as power of the dish gear on this countershaft and the dish gear of mandrel 12 one end.Because countershaft 10 is in main shaft 6, cannot improve the countershaft sprocket 9 on countershaft 10 and dish gear 11, therefore be more suitable for the processing of carrying out small-sized rotomoulded articles on small-sized rotational molding machine.
The interior set two inflation routes of described arm head 13, mandrel 12 are identical with the first structure, so locate to be no longer repeated in this description.
Two inflation routes in this rotational molding machine working arm mainly comprise normal pressure inflation route and high-pressure aerated route; Described normal pressure inflation route is that air pump enters atmosphere gas in Plastic Rolling Molds by outer inflation inlet 1, gas-charging connection 3, gas tube 8, middle inlet channel 20, interior venthole 24, interior outlet passageway 21 successively by gas main; Described high-pressure aerated route is that air pump enters gases at high pressure in Plastic Rolling Molds by interior inflation inlet 2, air-filled pore 25, filling channel 16, inclined to one side inlet channel 19, outer venthole 23, outer outlet passageway 22 successively by gas main.
The present invention can be arranged in the working arm that arm type is straight-arm, also can design in arm type is the working arm such as L arm or U arm, wherein two inflatable structures of working arm input and output are identical, just improve at the enterprising line correlation of middle part connectivity structure in the difference of combination arm type.
The working arm that is designed with this pair of inflatable structure is arranged on one conventionally can be along on the mobile vehicle frame of guide rail slippage, and by mobile vehicle frame, working arm is delivered in baking oven and heated, its working method is as follows: mobile vehicle frame is sent into working arm in baking oven and heated along guide rail, spindle sprocket 5 drives main shaft 6 to rotate simultaneously, and then drive arm head 13 to complete 360 ° of rotations of X-axis around the axial line of main shaft 6, countershaft sprocket 9 drives countershaft 10 to rotate, and then complete 360 ° of rotations of Y-axis around the axial line of mandrel with moving mandrel 12 by the dish gear 11 being meshed, now Plastic Rolling Molds will participate in the rotation of X-axis and Y-axis simultaneously, Plastic Rolling Molds is heated in baking oven more even.
While heating in Plastic Rolling Molds enters baking oven, corresponding working arm is also simultaneously heated, now booster air pump is inflated route for atmosphere gas is provided in Plastic Rolling Molds by normal pressure, this atmosphere gas is also become hot gas by Synchronous Heating in course of conveying, therefore, plastic powder in Plastic Rolling Molds is in the extremely extraneous heating that is subject to arrive, also can also form heating by inner hot gas, this dual-heated mode can better realize the Flashmelt of plastic powder, greatly shorten the heat time, energy-saving effect is brought up to more than 50%.Especially in the time making complicated rotomoulded articles, if only rely on the heating of Plastic Rolling Molds outer surface, may there is heating dead angle, this often causes rotomoulded articles to occur the phenomenon that wall unevenness is even because heating is uneven, or occur open defect and cause rotomoulded articles to scrap, and enter in Plastic Rolling Molds by hot gas, can directly blow the dead angle that is difficult to heating, make it to reach temperature of charge in Plastic Rolling Molds identical, thereby produce outstanding rotomoulded articles.And need to also can between Plastic Rolling Molds and mandrel 12, have additional again one section of bellows according to real work, to improve gas-heated temperature, this design does not change the heat source of traditional rotational molding machine, just the thermal source in traditional design is made full use of, and reaches energy-conservation, efficient object.In the time being incubated after Plastic Rolling Molds heating, can provide gases at high pressure in for Plastic Rolling Molds by high-pressure aerated route, to rotomoulded articles, moulding plays a key effect this high pressure gas physical efficiency, prevents that rotomoulded articles is out of shape with Improving The Quality of Products.

Claims (8)

1. two inflatable structures for rotational molding machine working arm, comprise main shaft (6) and countershaft (10), and this main shaft is provided with the spindle sprocket (5) that drive shaft is rotated, and this countershaft is provided with the countershaft sprocket (9) that drives countershaft to rotate; Described main shaft (6) output is connected on arm head (13), in this arm head, be provided with the mandrel (12) with bearing supporting, between this mandrel one end and countershaft (10) output, be respectively equipped with the dish gear (11) transmitting that engages and be used as power, and on the dish gear of mandrel (12), Plastic Rolling Molds is installed, it is characterized in that:
A, described main shaft (6) input or countershaft (10) input are provided with the gas-charging connection (3) that sealing is installed, this gas-charging connection is provided with interior inflation inlet (2) and outer inflation inlet (1), in main shaft (6) or in countershaft (10), be provided with the rotate gas tube (8) of supporting of bearing, between this gas tube and main shaft (6) or countershaft (10), form filling channel (16); Described interior inflation inlet (2) is connected with filling channel (16), and outer inflation inlet (1) is connected with gas tube (8) input;
In b, described arm head (13), be provided with middle inlet channel (20) and inlet channel (19) partially; In mandrel (12), be provided with while and the interior outlet passageway (21) being connected in Plastic Rolling Molds and outer outlet passageway (22), also be provided with interior venthole (24) and outer venthole (23), this interior venthole (24) is connected with interior outlet passageway (21), and outer venthole (23) is connected with outer outlet passageway (22);
It is upper that c, described gas tube (8) output are connected to arm head (13), and the interior venthole (24) on middle inlet channel (20), mandrel (12) in this gas tube output, arm head (13) and the interior outlet passageway (21) in mandrel are all done sealing and be communicated with; Outer venthole (23) on inclined to one side inlet channel (19), mandrel (12) in described filling channel (16), arm head (13) and the outer outlet passageway (22) in mandrel are all done sealing and are communicated with.
2. two inflatable structures of a kind of rotational molding machine working arm according to claim 1, it is characterized in that described gas-charging connection (3) is connected to main shaft (6) input, in this gas-charging connection and main shaft, be provided with the inflation adapter (4) that sealing is installed, input sealing is taken in this inflation, and is provided with interior aperture (18) and outer aperture (15) on inflation is taken over; Described inflation is taken over (4) and is arranged in gas-charging connection (3) and main shaft (6) with bearing supporting; Described gas tube (8) is arranged in main shaft (6) with bearing supporting, forms filling channel (16) between this gas tube and main shaft; Described gas tube (8) input stretches into described inflation and takes in (4), this gas tube input is connected in taking over inflation, between gas tube (8) and inflation adapter (4), form gas-filled gap (17), this gas-filled gap is connected with described filling channel (16); The outer aperture (15) that described outer inflation inlet (1) is taken on (4) through inflation is connected with in inflation adapter (4), and then is communicated with gas tube (8) input; The interior aperture (18) that described interior inflation inlet (2) is taken on (4) through inflation is connected with gas-filled gap (17), and then is communicated with filling channel (16).
3. two inflatable structures of a kind of rotational molding machine working arm according to claim 1, it is characterized in that described countershaft (10) input is arranged in gas-charging connection (3) with bearing supporting, this countershaft input is provided with air-filled pore (25), the sealing of this gas-charging connection (3) input; Described gas tube (8) is arranged in countershaft (10) with bearing supporting, and between gas tube and countershaft, forms filling channel (16); Described outer inflation inlet (1) is connected with gas tube (8) input; The air-filled pore (25) of described interior inflation inlet (2) on countershaft (10) is connected with filling channel (16).
4. two inflatable structures of a kind of rotational molding machine working arm according to claim 1, is characterized in that two inflation routes of described rotational molding machine working arm comprise normal pressure inflation route and high-pressure aerated route.
5. two inflatable structures of a kind of rotational molding machine working arm according to claim 4, is characterized in that described normal pressure inflation route is that gas enters in Plastic Rolling Molds by outer inflation inlet (1), outer aperture (15), inflation adapter (4), gas tube (8), middle inlet channel (20), interior venthole (24), interior outlet passageway (21) successively; Or gas enters in Plastic Rolling Molds by outer inflation inlet (1), gas-charging connection (3), gas tube (8), middle inlet channel (20), interior venthole (24), interior outlet passageway (21) successively.
6. two inflatable structures of a kind of rotational molding machine working arm according to claim 4, is characterized in that described high-pressure aerated route is that gas enters in Plastic Rolling Molds by interior inflation inlet (2), interior aperture (18), gas-filled gap (17), filling channel (16), inclined to one side inlet channel (19), outer venthole (23), outer outlet passageway (22) successively; Or gas enters in Plastic Rolling Molds by interior inflation inlet (2), air-filled pore (25), filling channel (16), inclined to one side inlet channel (19), outer venthole (23), outer outlet passageway (22) successively.
7. two inflatable structures of a kind of rotational molding machine working arm according to claim 1, it is characterized in that described countershaft (10) is arranged on outside main shaft (6), this main shaft, with the supporting that rotates of the bearing in bearing block (7), is provided with the bearing that rotates and support between this countershaft (10) and main shaft (6).
8. two inflatable structures of a kind of rotational molding machine working arm according to claim 1, it is characterized in that described main shaft (6) is arranged on outside countershaft (10), this main shaft, with the supporting that rotates of the bearing in bearing block (7), is provided with the bearing that rotates and support between this countershaft (10) and main shaft (6).
CN201210246372.3A 2012-07-17 2012-07-17 Dual-inflating structure of work arm of rotational molding machine Expired - Fee Related CN102744820B (en)

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CN202016156U (en) * 2011-01-07 2011-10-26 烟台方大滚塑有限公司 Double-channel air charging system
CN202668842U (en) * 2012-07-17 2013-01-16 孙罗娇 Double-air-inflation structure of rotational molding machine working arm

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1736292A1 (en) * 2005-06-20 2006-12-27 Polivinil Rotomachinery S.P.A. Mould carrying arm for rotational moulding machine with temperature detecting system
CN201283618Y (en) * 2008-11-12 2009-08-05 王海平 Rotational molding machine
CN202016156U (en) * 2011-01-07 2011-10-26 烟台方大滚塑有限公司 Double-channel air charging system
CN202668842U (en) * 2012-07-17 2013-01-16 孙罗娇 Double-air-inflation structure of rotational molding machine working arm

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