CN102615752A

CN102615752A - Rotational moulding machine

Info

Publication number: CN102615752A
Application number: CN2012100772667A
Authority: CN
Inventors: 杨卫民; 秦柳; 丁玉梅
Original assignee: Beijing University of Chemical Technology
Current assignee: Beijing University of Chemical Technology
Priority date: 2012-03-21
Filing date: 2012-03-21
Publication date: 2012-08-01
Anticipated expiration: 2032-03-21
Also published as: CN102615752B

Abstract

The invention relates to a rotational molding machine, which mainly includes a bracket system, a heating system, a heating chamber, and a track. The heating system is adjacent to the heating chamber and is surrounded by an oven wall, a front side door, a rear side door, and a bottom baffle. There is a mold in the bracket system And provide a drive system for the mold to rotate around the double axis, the height of the mold can be adjusted; the heating system is set on the side of the oven wall, including the burner, air inlet, air duct, circulation fan, air outlet, the air duct and the heating chamber are integrated design. By setting the free-moving bracket system, the surroundings of the heating chamber are completely sealed, and the integrated design of setting the air duct and the heating chamber together can reduce heat loss, improve molding efficiency, and reduce energy consumption. The independent bottom rotation mechanism has a strong bearing capacity , and the working position of the mold can be adjusted according to the size and quantity of the mold. The heat conduction sheet is installed between the air inlet and the air outlet of the hot chamber to effectively ensure that the mold is heated quickly and evenly, and the total heat delivered to the heating chamber is increased.

Description

A kind of rotational molding shaping machine

Technical field

The present invention relates to the rotation molding technical field, relate in particular to the revolving totally-enclosed rotational moulding machine in a kind of formula chassis, this rotational moulding machine is applicable to processing and manufacturing large scale and super, the plastic products that planform is complicated.

Background technology

The rotational moulding machine is applicable to machining large-sized hollow product, so rotomoulding apparatus itself belongs to large-scale plant equipment.Present rotational moulding machine nearly all is open structure; It is the outside that the mechanical arm of rotational moulding machine is arranged on heating clamber; The rotational moulding machine is when heating, and side door can not be closed fully, leaves very big space; Because mechanical arm need bear heavier load, so need bigger size and the space of design could satisfy need of work; And air channel and heating clamber adopt separate design, and promptly the air channel is arranged on the outside of heating clamber, and this structure causes thermal loss greatly, causes that cycle process time is long, production efficiency is low, energy resource consumption is big.In addition, after existing rotational moulding mechanism was created, structure, the position of die frame and heating clamber were all fixed; Can't be adjustable, during for the goods of processing different size and shape, especially complex-shaped goods; The die surface complex structure is difficult to realize that each surface of mould is heated at the heating clamber center, can not guarantee effectively that mould is heated and thermally equivalent fast; So material is difficult to evenly disperse, quality precision such as the goods internal structure that processes, superficial makings are not high.

Summary of the invention

The objective of the invention is defective to existing rotomoulding apparatus existence; Design a kind of rotational moulding machine of compact conformation; Improve the sealing effectiveness of rotational moulding machine, and can freely regulate its operating position, make mould be in best operational position in the inside of heating clamber according to the different size of mould; Guarantee that the die surface heating region does not have the dead angle, thus improve the rotational moulding machine operating efficiency, cut down the consumption of energy, the rotomoulded articles of machining high-precision.

For realizing that the technical scheme that above-mentioned purpose adopts is: a kind of rotational molding shaping machine; Mainly form by mounting system, heating system, heating clamber, track, heating system next-door neighbour heating clamber, said heating clamber is surrounded by baking oven wall, front side door, rear door, bottom baffle; Bottom baffle is positioned at the bottom of baking oven wall; Bottom baffle blocks the bottom opening of baking oven wall when mounting system moves into heating clamber inside, and making heating clamber is an enclosure space, and front side door, rear door and bottom baffle can be opened; Be convenient to mounting system and move into and shift out heating clamber; Mounting system can and shift out heating clamber from front side door, rear door immigration, include mould in the mounting system and reach to mould provides around biaxial rotated drive system, and the height of mould can be regulated; Heating system is arranged on the side of baking oven wall, comprises combustor, air inlet, air channel, conducting strip, circulating fan, air outlet, and air inlet and air outlet are that the air quantity that adds hot-flow flue is imported and exported, and are the air outlet and the air inlet of heating clamber simultaneously; Combustor is installed in the top in air channel, and for heating clamber provides heat, air inlet is arranged on the top in heating clamber and air channel, a side of combustor, and air channel and heating clamber adopt the one design; The air channel is arranged on a side of heating clamber, and an end in air channel communicates with air inlet, and conducting strip is installed between air inlet and the air outlet, and conducting strip promptly is a part of baking oven wall of heating clamber; Also be a side in air channel, conducting strip adopts the high thermal conductivity coefficient material, when hot blast is flowed through the air channel; Conducting strip is heated, and for heating clamber provides heat, circulating fan is arranged on the below of heating clamber; Attract the combustor heated hot air heated, air outlet be arranged on heating clamber the below, communicate with the air channel other end, when the rotational moulding machine is worked; Air inlet sucks the air channel with hot blast unnecessary in the heating clamber, and this wind is delivered to air outlet through combustor heating back through the air channel and got into heating clamber, and bottom baffle is arranged on the below of heating clamber; Bottom baffle is formed by two, the lower end incision of baking oven wall is installed, retractable respectively; When mounting system was in heating clamber inside, bottom baffle was closed, and realized heating clamber lower end complete closed.

A kind of rotational molding shaping machine of the present invention, described mounting system can realize double for two covers; Every cover mounting system comprises vehicle frame, drive motors, lifting column one, lifting column two, rotating disc, die frame one, die frame two, power transmission shaft, electric rotating machine, and track is fixedly mounted on ground or the workbench, and vehicle frame is arranged on the top of track; Drive motors is fixedly mounted on the below of vehicle frame, and the drive motor drives vehicle frame passes in and out heating clamber along track, adopts this mechanism to be provided with to mounting system; Can guarantee heating clamber when work, the front side door of rotational moulding machine and rear door complete closed, mounting system and mould are in the inside of heating clamber fully like this; Lifting column one is installed in the top of vehicle frame, and lifting column two is installed in the inside of lifting column one, and lifting column one can freely be regulated height according to the size of mould at perpendicular with lifting column two; The mould of different size is heated in the area of space of the best, and rotating disc is installed in the top of lifting column two, is connected with electric rotating machine with lifting column two through lifting column one; Die frame one is fixedly mounted on the rotating disc, rotatablely moves with rotating disc, and die frame two is installed between the both sides of die frame one; Under the driving of electric rotating machine and power transmission shaft; Die frame two can rotate around the axis of parallel, horizontal face, and power transmission shaft is installed on the die frame one, and gear matched, the other end on an end and the die frame two and the planetary gear of installing above the rotating disc cooperate; Electric rotating machine is installed on the vehicle frame, lifting column one below; Driven in rotation dish and power transmission shaft motion, the Union Movement of rotating disc and die frame two can realize that mould rotatablely moves in the space of heating clamber, thereby realizes the even dispersion of material.

The invention has the beneficial effects as follows:

1, through free-moving mounting system is set, can realize the rotational moulding machine when work, sealing fully reduces the loss of heat around the heating clamber; Integrated design with air channel and heating clamber are set together also can reduce the loss of heat, improves shaping efficiency, cuts down the consumption of energy.

2, through different lifting columns are set, can be flexibly, freely according to the optimum position of the size adjustment mold work of mould, guarantee that effectively mould is heated and thermally equivalent fast, realize that material evenly disperses, thereby improve Products Quality; This structure has handles sensitive, easy improved characteristics of later stage, compares with traditional rotational moulding machine, and structure is compact more.

3, the rotational moulding machine pivoted arm of transmission is deep in the heating clamber, and its pivoted arm is a cantilever beam structures, and mold weight is prone to cause pivoted arm to destroy when big, and twin shaft of the present invention rotation, lifting column one and lifting column two pressurizeds, bearing capacity is strong, and is survivable.

4, between the air inlet of heating clamber and air outlet conducting strip is set, has increased the total amount of heat of carrying to heating clamber, the heating clamber quick heating reaches design temperature more quickly, and the efficiency of heating surface improves.

Description of drawings

Fig. 1 is the rotary hermetically sealed rotational moulding machine structural representation in a kind of chassis of the present invention.

Fig. 2 is the rotary hermetically sealed rotational moulding machine support system architecture sketch map in a kind of chassis of the present invention.

Among the figure, 1-mounting system, 2-heating system, 3-baking oven wall, 4-heating clamber, 5-front side door, 6-mould; The 7-rear door, 8-combustor, 9-air inlet, 10-air channel, 11-conducting strip, 12-circulating fan; The 13-air outlet, 14-bottom baffle, 15-track, 16-vehicle frame, 17-drive motors, 18-lifting column one; 19-lifting column two, 20-rotating disc, 21-die frame one, 22-die frame two, 23-power transmission shaft, 24-electric rotating machine.

The specific embodiment

A kind of rotational molding shaping machine of the present invention, as depicted in figs. 1 and 2, mainly comprise mounting system 1, heating system 2, heating clamber 4, track 15 compositions; Said heating clamber 4 is surrounded by baking oven wall 3, front side door 5, rear door 7, bottom baffle 14; Bottom baffle 14 is positioned at the bottom of baking oven wall 3, when mounting system 1 moves into heating clamber 4 inside, blocks the bottom opening of baking oven wall 3, and front side door 5, rear door 7 can be opened; Be convenient to mounting system 1 and move into and shift out heating clamber 4; Mounting system 1 comprises vehicle frame 16, drive motors 17, lifting column 1, lifting column 2 19, rotating disc 20, die frame 1, die frame 2 22, power transmission shaft 23, electric rotating machine 24, and mould 6 is installed on the die frame 2 22, and die frame 2 22 is installed on the die frame 1; Die frame one is installed on the rotating disc 20; Electric rotating machine 24 and rotating disc 20 provide around the rotatablely moving of vertical axis and horizontal axis for mould 6, and lifting column 1 provides moving of the short transverse of mould at heating clamber with lifting column 2 19, and mounting system 1 setting is on the ground or on the track 15; In heating clamber 4 inside and outside freely-movables, mobile power comes from drive motors 17 and worm drive system thereof to mounting system 1 by vehicle frame 16; Heating system 2 is arranged on the side of baking oven wall 3, comprises combustor 8, air inlet 9, air channel 10, conducting strip 11, circulating fan 12, air outlet 13, and air inlet 9 is the air quantity import and export of heat tunnel with air outlet 13; Be the air outlet and the air inlet of heating clamber 4 simultaneously, combustor 8 is installed in the top in air channel 10, for heating clamber 4 provides heat; Air inlet 9 is arranged on the top in heating clamber 4 and air channel 10, a side of combustor 8, and the one design is adopted with heating clamber 4 in air channel 10, and air channel 10 is arranged on a side of heating clamber 4; One end in air channel 10 communicates with air inlet 9, and conducting strip 11 is installed between air inlet 9 and the air outlet 13, and conducting strip 11 promptly is a part of baking oven wall of heating clamber 4; Also be a side in air channel 10, conducting strip 11 adopts the high thermal conductivity coefficient material, when hot blast is flowed through air channel 10; Conducting strip 11 is heated, and for heating clamber 4 provides heat, circulating fan 12 is arranged on the below of heating clamber 4; Attract combustor 8 heated hot air heated, air outlet 13 be arranged on heating clamber 4 the below, communicate with air channel 10 other ends, when the rotational moulding machine is worked; Air inlet 9 sucks the air channel with hot blast unnecessary in the heating clamber 4, and this wind is delivered to air outlet 13 through combustor 8 heating backs through air channel 10 and got into heating clamber 4, and bottom baffle 14 is arranged on the below of heating clamber 4; Bottom baffle 14 is formed by two, the lower end incision of baking oven wall 3 is installed, retractable respectively; When mounting system 1 was in heating clamber 4 inside, bottom baffle 14 was closed, and realizes heating clamber 4 lower end complete closed.

A kind of rotational molding shaping machine of the present invention, like Fig. 2, described mounting system 1 can be two covers; Realize double, mounting system 1 comprises track 15, vehicle frame 16, drive motors 17, lifting column 1, lifting column 2 19, rotating disc 20, die frame 1, die frame 2 22, power transmission shaft 23, electric rotating machine 24, and track 15 is fixedly mounted on ground or the workbench; Vehicle frame 16 is arranged on the top of track 15, and drive motors 17 is fixedly mounted on the below of vehicle frame 16, and drive motors 17 drives vehicle frame 16 along track 15 turnover heating clambers 4; Adopt this mechanism to be provided with to mounting system 1, can guarantee heating clamber 4 when work, the front side door 5 and rear door 7 complete closed of rotational moulding machine; Mounting system 1 and mould 6 are in the inside of heating clamber 4 fully like this; Lifting column 1 is installed in the top of vehicle frame 16, and lifting column 2 19 is installed in the inside of lifting column 1, and lifting column 1 can freely be regulated height according to the size of mould at perpendicular with lifting column 2 19; The mould of different size is heated in the area of space of the best; Rotating disc 20 is installed in the top of lifting column 2 19, is connected with electric rotating machine 24 with lifting column 2 19 through lifting column 1, and die frame 1 is fixedly mounted on the rotating disc 20; Rotatablely move with rotating disc 20; Die frame 2 22 is installed between the both sides of die frame 1, and under the driving of electric rotating machine 24 and power transmission shaft 23, die frame 2 22 can rotate around the axis of parallel, horizontal face; Power transmission shaft 23 is installed on the die frame 1; Gear matched on one end and the die frame 2 22, the other end cooperate with the planetary gears of installing above the rotating disc 20, and electric rotating machine 24 is installed on the vehicle frame 16, lifting column one 18 belows, and driven in rotation dish 20 moves with power transmission shaft 23; The Union Movement of rotating disc 20 and die frame 2 22 can realize that mould 6 rotatablely moves in the space of heating clamber 4, thereby realizes the even dispersion of material.

Claims

1. A rotational molding machine, mainly comprising support system, heating system, heating chamber, track, it is characterized in that: heating system is close to heating chamber, and described heating chamber is surrounded by oven wall, front side door, rear side door, bottom baffle The bottom baffle is located at the bottom of the oven wall, the bottom baffle can block the bottom opening of the oven wall, the front side door, the rear side door and the bottom baffle can all be opened, and the bracket system can move in and out of the heating chamber from the front side door and the rear side door; the bracket The system includes a mold and a drive system that provides the mold with biaxial rotation. The height of the mold can be adjusted; the heating system is set on the side of the oven wall, including the burner, air inlet, air duct, circulation fan, air outlet, and air inlet. And the air outlet is the inlet and outlet of the air volume of the heating air duct, and it is also the air outlet and air inlet of the heating chamber. The tuyere is set under the heating chamber and the air duct, and the air duct and the heating chamber are designed in one piece.

2. A rotomoulding molding machine according to claim 1, characterized in that: the support system is two sets, realizing double stations, each set includes a vehicle frame, a driving motor, a lifting column 1, and a lifting column 2 , rotating disc, mold frame 1, mold frame 2, transmission shaft, rotating motor, the track is fixedly installed on the ground or workbench, the vehicle frame is set above the track, the driving motor is fixedly installed under the vehicle frame, and the driving motor drives the car The frame enters and exits the heating chamber along the track. The first lifting column is installed above the frame, and the second lifting column is installed inside the first lifting column. The first lifting column and the second lifting column can freely adjust the height according to the size of the mold on the vertical plane. The plate is installed above the lifting column 2, connected with the rotating motor through the lifting column 1 and the lifting column 2, the mold frame 1 is fixedly installed on the rotating disk, and the mold frame 2 is installed between the two sides of the mold frame 1, and the mold frame 2 can be Rotate around the axis parallel to the horizontal plane. The transmission shaft is installed on the first mold frame. One end cooperates with the gear on the second mold frame, and the other end cooperates with the planetary gear installed on the rotating disk. The rotating motor is installed on the frame. down below.

3. A rotational molding machine according to claim 1, characterized in that: a heat conducting sheet is installed between the air inlet and the air outlet.

4. A rotational molding machine according to claim 1, characterized in that: the bottom baffle consists of two pieces, which are respectively installed at the lower end cutouts of the oven wall, and can be freely expanded and contracted.