JPH0286416A - Powder slush molding equipment - Google Patents

Abstract

PURPOSE:To obtain four pieces of molded articles in a molding cycle unit necessary for slush molding and to enhance productivity by constituting the title equipment so that four pieces of slush molds are successively carried to respective stations of mold release, heating, material supply and cooling by action of both front truck and a rear truck. CONSTITUTION:Four pieces of slush molds S1-S4 are fed at the interval of a prescribed time. While the slush mold is heated in a second heating stations 6', the slush mold heated in a first heating station 6 is sent to a material supplying station 7 by a rear truck 3 and the next slush mold is introduced into the first heating station by a front truck 2. Thereafter the slush mold heated in the second station is sent to the material supplying station by the rear truck. Furthermore four pieces of slush molds are successively carried to the separately independent mold releasing station 4, the first and second heating stations 6, 6', the material supplying station 7 and a cooling station 5 at the interval of one cycle of molding by both the front truck 2 and the rear truck 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an improvement of a powder slush molding apparatus. Powder slush molding is a molding method that allows sophisticated designs through mold surface transfer, larger sizes, and cost reductions due to improved yield, and is used in the production of the skin of vehicle interior materials.

[Prior art] Conventionally, a powder slush material such as vinyl chloride resin is used, the powder slush material is brought into contact with a heated mold surface, and the powder slush material is melted and adhered on the mold surface to form a constant film. Powder slush molding is used in practice to obtain a film-like molded product by forming a thick molten plasticized polyvinyl chloride resin film and then cooling the polyvinyl chloride resin.

General powder slush molding equipment used for this type of molding is a slush type (electroforming type such as N t or Qu) in which a copper pipe through which heating oil and cooling oil flows is bonded to the back surface of the copper pipe, and a It is equipped with a heating device and a cooling device that are connected to each other to circulate heating oil and cooling oil, and a swinging device that rotates and swings the openings of the slash mold and material box facing each other in order to input and collect materials. (Japanese Unexamined Patent Publication No. 60-157818, Utility Model Application No. 60-168915
(Japanese Patent Publication No. 60-55756, etc.).

[Problems to be Solved by the Invention] In the conventional powder slush molding V apparatus, each f! One product is manufactured by carrying out the mushroom processing steps continuously. That is,
A heating process in which the slush mold is heated by a heating device, a material supply process in which material is supplied to the slush mold by a swinging device, a cooling process in which the slush mold is cooled by cooling @, and a removal process in which the formed body is separated from the slush mold. Perform the molding process in order. For this reason, it takes approximately 30% to produce one product.
There is a problem in that it takes ~10 minutes (varies depending on heating/cooling capacity), and productivity is extremely low. Furthermore, when a slush mold is rapidly heated to increase productivity, there is a problem that the degree of heating is uneven depending on the shape of the slush mold, resulting in molding defects such as insufficient melting of the powder slush and overbaking.

The present invention was devised in view of the above circumstances, and its purpose is to provide a powder slush molding device with excellent productivity and moldability.

[Means for Solving the Problems] The powder slush molding apparatus of the present invention includes at least four slush molds, one linearly extending guide portion, and a guide portion for conveying the slush molds. A front truck and a rear truck that are guided and always located in the front and back direction of the guide section, a demolding station, a cooling station, and a first It is characterized by comprising a heating station, a second heating station, and a material supply station.

[Operation] One cycle of molding in the powder slush molding apparatus of the present invention is as follows: demolding station→first or second heating station→material supply station→cooling station.

The slush mold that has completed the process at the demolding station is
It is transported to the first or second heating station by the front truck. After heating, the slush mold is transferred from the first or second heating station to the rear truck and transported to the material supply station, where materials are loaded into and collected from the slush mold. Thereafter, the slush mold is transported to a cooling station by a rear truck. After cooling, the slush mold is transported by the front truck to a demolding station, where the product is demolded and one molding cycle is completed. Here, the slush molds that have completed the process at the demolding station are alternately transported to the first heating station or the second heating station. Also, the front truck moves between the demolding station and the second heating station, and during one molding cycle, the demolding station → second heating station → cooling station → demolding station → first heating station → cooling station 1 cycle of the front truck is repeated twice. The rear carriage moves between the cooling station and the material supply station, and during one molding cycle, the rear carriage moves from the material supply station to the cooling station to the first heating station to the material supply station to the cooling station to the second heating station. Repeat 111 cycles twice.

Therefore, if four slush molds are sent at predetermined time intervals, while the slush mold is being heated at the second heating station, the IC slush mold heated at the first heating station is sent to the material supply station using the rear truck. After the next slush mold is placed into the first heating station by the front truck, the slush mold heated at the second heating station can be sent by the rear truck to the material supply station. As a result, during one molding cycle, the two carts, the front cart and the rear cart, separate the four slush molds without interfering with each other, creating four independent stations: a demolding station, a heating station, and a material molding station. In addition to being sequentially transported to a supply station and a cooling station, the demolding station to a heating station can be transported alternately to a first heating station or a second heating station.

[Example] Hereinafter, specific examples of the powder slush molding apparatus of the present invention will be described based on the drawings. FIG. 1 is a side view schematically showing the schematic configuration of the powder slush molding apparatus of this embodiment.

As shown in FIG. 1, the powder slush molding apparatus of this embodiment includes four slush molds S1 to S4, a guide section 1, a front truck 2, a rear truck 3, a demolding station 4, a cooling station 5, a first heating station 6,
a second heating station 6' and a material supply station 7;
The main components are:

The four slash molds 81 to S4 are metal electroforming molds having six mold surfaces of a predetermined shape formed in a concave shape on the negative surface,
Seven flange portions for being clamped are formed around one side of the same opening. Four slash molds 81 to S4 are arbitrarily selected depending on the product to be manufactured.

The guide section 1 is made up of two running rails arranged in parallel with a predetermined interval, and supports and guides the front platform @ 2 and the rear platform 3. This guide section 1 is provided horizontally above each station arranged in a line from a demolding station 4 to a material supply station 7, which will be described later.

The front truck 2 is for transporting the slash molds 81 to S4 by holding them thereunder, and is placed on the two running rails of the guide section 1 and disposed on the front side of the guide section 1. As the side view of the front truck 2 is shown in FIG.
Four running wheels 21, a variable speed va 22, a drive motor 23 that drives the running wheels 21 via the transmission 22, a clamper 25 that is provided at the lower part of the truck body and clamps the slash molds 81 to S4, and a clamper 25.

The rear truck 3 is for transporting the slash dies 81 to S4 by holding them thereunder, and is placed on the two running rails of the guide section 1 and disposed on the rear side of the guide section 1. This rear truck 3 has the same specifications as the front truck 2, and includes four running wheels 31, a transmission 132, a truck drive motor 33, a clamper 35, and a hydraulic device 36 (second (see figure).

Note that the drive motor 23 of the rear truck 3 and the front truck 2
．． 33 and hydraulic system 26.36 is code 27.37
It is electrically connected to a control unit (not shown) via a controller, and is operated under program control.

The demolding station 4 is installed at the forwardmost position along the guide part 1, and is a station for demolding the molded product after completing the process at the cooling station 5, and is a station for demolding the molded product after completing the process at the cooling station 5. Configure the process. As shown in FIGS. 1, 3, and 4, this demolding station 4 includes a base 4o and a slash mold 81 fixed to the base 40.
- S4 is provided with an elevating lifter 43 that raises and lowers the molds in the vertical direction, and a mold rotation device 45 that is installed on the elevating lifter 43 and rotates the slash molds s1 to s4.

As shown in a side view in FIG. 3 and a front view in FIG. 4, the elevating lifter 43 includes a pair of left and right hydraulic cylinder devices 431 that are spaced apart from each other in the width direction and stand upright on the base 40.
has. The piston rod 431a of each hydraulic cylinder device 431 is movable in the vertical direction by a hydraulic drive unit (not shown), and its upper end is movable in the vJ1 section 43.
It is fixed at 2. Each movable base 432 is movably held by lifter guides 433 provided on both sides of each piston rod 431a in parallel.

Further, between the pair of hydraulic cylinder devices 431, a rack and binion mechanism (not shown) installed at the lower part thereof,
A synchronization bar 436 is connected via a transmission belt 435 or the like, thereby synchronizing the operations of the hydraulic cylinder device 431.

The mold rotation device 45 includes a pair of reversal drive sections 451 provided inside each of the movable JM sections 432, and a reversal drive section 451.
and mold holding parts 453 which are provided facing each other and hold the slash molds $1 to S4. A pair of reversing drive units 45
1 are provided so as to be movable in mutually advancing and retracting directions by a drive section (not shown), and rotatable in a direction for vertically inverting the slash molds 81 to S4 held by a mold holding section 453.

It should be noted that in this demolding station 4, a worker A who performs demolding work is placed at a predetermined position (see FIG. 1).

The cooling station 5 is disposed next to the demolding station 4 from the front to the rear of the guide section 1, and is a station for cooling and solidifying the molten powder material after completing the process at the material supply station 7. It is. This cooling station 5, as shown in FIGS. 1 and 5,
The base 50, a cooling water tank 53 containing temperature-controlled water 537 for cooling the slush molds 81 to S4, and a cooling water tank 53.
First lifter 55 guiding the slash molds 81 to S4 inward
and a first type inverting device 57 that clamps and inverts the slash dies $1 to S4.

As shown in a cross-sectional view in FIG. 5, the cooling water tank 53 consists of a main tank 533 and a sub-tank 535 separated by a partition plate 531, and is box-shaped with an open top. Main tank 533 and sub tank 53
5 are connected to each other at their side bottoms by connecting pipes 534 disposed around them. The communication pipe 534 includes
A pump device (not shown) is provided, and the temperature-controlled water 537 that overflows from the main tank 533 to the sub tank 535 over the partition plate 531 and flows into the flow pipe 538 is returned to the main tank 533 by the pump device. It is designed to circulate between both tanks. A large number of nozzle portions 534a are provided in a portion of the connecting pipe 534 that extends into the main tank 533, and the temperature-adjusted water 537 is jetted out to stir the inside of the main tank 533. In addition, the communication pipe 534 is provided with circulating temperature-adjusted water 537 at a temperature of 60 to 80 ml.
A cooling device (not shown) is provided to maintain the temperature at °C.

As shown in FIG. 6 as a side view and as shown in FIG. It has a hydraulic cylinder device 551. The piston rod 551a of each hydraulic cylinder device 551 is vertically slidable, and its E end is fixed to the movable base 552.

All possible! The IJ base 552 is provided parallel to each piston rod 551a on both sides thereof, or is slidably held by the lid guide 554. Furthermore, a synchronization bar 456 is connected between the pair of hydraulic cylinder devices 551 via a rack and pinion mechanism (not shown) mounted on each, a transmission belt 455, etc., and thereby the hydraulic cylinder devices 551 The operations of the two are synchronized.

The first type reversing device @57 includes each movable base 5 of the first lifter 55.
It consists of a pair of reversing shaft parts 571 coaxially provided on the reversing shaft part 52, and a clamp part 573 that is provided facing each other at the inner tip of the reversing shaft part 571 and clamps the slash molds 81 to S4. The pair of reversing shaft parts 571 can be slid in mutually advancing and retracting directions by a driving part (not shown) provided in the movable base part 552, and can also vertically invert the slash molds 81 to S4 held by the clamp part 573. possible.

The first heating station 6 is disposed on the rear side of the cooling station 5, and is a station for preheating the slush molds 81 to $4 conveyed from the demolding station 4. As shown in FIG. 1, this heating station 6 includes a base 60, a fluidized bed furnace 61 for heating the slush molds 81 to S4, and a system for guiding the slush molds $1 to $4 into the fluidized bed furnace 61. a second lifter 63 that holds and inverts the slash molds 81 to S4;
It is equipped with I65.

The fluidized bed furnace 61 is box-shaped with an open top, as shown in a sectional view in FIG.

This fluidized bed furnace 61 consists of an upper heating MJ 614 and a lower air blowing chamber 616, which are vertically divided by a fluidized plate 612 in which a large number of air blowing holes 612a are formed at predetermined intervals. Heat medium sand (glass beads, zircon sand, aluminum beads, etc.) (not shown) is put into the heating tank 614, and this heat medium sand is heated to 300 to It is heated to 350°C. Further, compressed air is supplied to the air blowing chamber 616 from the air blowing hole 612a of the fluidizing plate 612 to make the heat medium sand into a fluidized state.

Note that the second lifter 63 and the second type reversing device 65 have the same specifications as the first lifter 55 and the first type reversing device 57.

The second heating station 6' is connected to the first heating stage 3' and 6'.
This is a station for preheating the slush molds 81 to S4 conveyed from the demolding station 4.

That is, the slush molds S1 to S4 are alternately conveyed to the first heating station 6 and the second heating station 6'. The configuration of this second heating station 6' is as follows:
Since it is the same as the first heating station 6 described above, the explanation will be omitted.

The material supply station 7 is connected to the second heating station 6'
This is a station for supplying material to the slush molds 81 to S4 conveyed from the first heating station 6 or the second heating station 6'. As shown in FIG. 1, this material supply station 7 includes a base 70, a guide lifter 71 for guiding the slash molds 81 to S4 to predetermined positions, and a guide lifter 71 for guiding the slash molds 81 to S4 to predetermined positions.
A rocking device 73 that clamps and rocks 4 together with a material box, three material boxes 75 into which powder materials are put, and a material box 75.
a turntable 77 on which the turntable 77 is placed;
It is equipped with a scissor lift 79 that combines the upper predetermined material box 75 with the slash molds $1 to S4.

The guide lifter 71, as shown in the front view in FIG.
A pair of left and right hydraulic cylinder devices 711 are provided upright on the base 70 at intervals in the width direction. The piston rod 711a of each hydraulic cylinder device 711 has its upper end fixed to the flexible base 712. Each movable base 71
2 are provided parallel to each piston rod 711a on both sides thereof, and are held by the lid guide 714 so as to be freely movable in the vertical direction. Further, each movable base 712 is provided with clamp portions 715 that are mounted so as to be movable forward and backward so as to face each other and clamp the slash molds $1 to S4. A synchronization bar 718 is provided between the pair of hydraulic cylinder devices 11 and 711 and connected via a transmission belt 717 or the like.

As shown in the plan view of FIG. 10, the swinging device ff73 includes a frame 731 which is arranged approximately in the middle of the material supply station 7 and which arranges the frontage portions of the slash molds 81 to $4 and the material box 75 to face each other. , a pair of swing shafts 733 coaxially fixed to both left and right sides of the frame 731, and a pair of swing parts 735 provided on each base 70 to move one swing shaft 733;
It consists of a drive motor 737 that drives a swinging section 735.

The frame 731 has six fixing pins 732a for positioning and fixing the flanges of the slash molds 81 to S4 and six fixing bins 732b for positioning and fixing the seven flange parts of the material box 75 on both sides in the forward direction. There are 12 in total.

The material box 75 is box-shaped and has an opening on one side that is approximately the same size as the openings of the slush molds 81 to S4, and three material boxes 75 containing powder materials are prepared.

Note that powder material for 20 to 30 times is put into each material box 75 at one time.

As shown in the plan view of FIG. 11, the turntable 77 is a disk-shaped b that rotates on a horizontal plane in the direction of arrow a in the figure by 120 degrees around a rotating shaft 771. The turntable 77 is provided with three elongated holes 773 that are slightly smaller than the bottom surface of the material box 75 at intervals of 1200, and one elongated hole 773 stops at a position directly below the frame 731. It looks like this. Also, turntable 77
, there is a long hole 773 on the upstream side of the position directly below the frame body 731.
A loading device 776 for loading the material box 75 loaded with powder material, and a loading device 776 for loading the empty material box 75 from above the elongated hole 773 on the downstream side of the position directly below the frame body 731. Bag 'Fl 777 is provided.

The scissor lift 79 is disposed below the turntable 77 and directly below the frame 731.

This scissor lift 79 is connected to the elongated hole 7 of the turntable 77.
It has a lift rod 791 that passes through the material box 73 and pushes up the bottom of the material box 75 to unite the 7 flange portion with the frame 731.

In addition, on the rear side of the material supply station 7, there is a slash mold S that is not currently used or that will be used in the next molding operation.
A setup zone 8 for preparing 5 is provided. This replacement of the setup zone 8 with the slash type S5 is automatically performed by the rear truck 3 in response to an instruction (electrical input) to the operator.

Next, the operation of the powder slush molding apparatus of this embodiment will be explained. FIG. 12 is a timing chart showing the operating state of the powder slush molding apparatus of this embodiment. here 4
The operation of the first slash type S1 will be explained as a representative of the slash types 81 to S4.

The slush die S1, which has completed the demolding operation for 9 seconds at the demolding station 4, has its flange portion held by the die clamping portion 453 of the die rotating device 45, with the die surface facing sideways. From this state, the mold rotating device 45
It is rotated so that the mold surface is directed downward, and then lifted up by the lifting lifter 43 and delivered to the clamper 25 of the front truck 2 waiting above. Next, the bogie drive motor 23 of the front bogie 2 is started and the running wheels 21 are rotated via the transmission 22, whereby the front bogie 2 travels while being guided by the guide section 1 and transfers the sludge i-type S1 to the second
Transported to heating station 6'. Front truck 2 is the second
When reaching the upper part of the heating station 6', the second lifter 63' rises and the second type reversing device 65' clamps the flange part of the slush mold S1, and the slush mold S1 is received from the clamper 25 of the front truck 2. take. Slash type S
The second lifter 63' that has received the second type reversing device 6
5', the slash type S1 is inverted vertically and then lowered. This lowering causes the slush type S1 to move to the fluidized bed furnace 61.
' is immersed in heat carrier sand, where it is heated to approximately 300°C. After heating for 95 seconds, the second lifter 63- rises, and the slash mold S1 is vertically reversed by the second reversing device 65', and then travels above it to the clamper 35 of the waiting rear truck 3. Uke is passed. Rear truck 3
transports the slush mold S1 to the material supply station 7 while being guided by the guide section 1. At this point, the guide lifter 71 of the material supply station 7 comes up and clamps the slash mold S1 with the clamp part 715. Then, the guide lifter 71 descends as it is, and the flange portion of the slash type S1 is positioned and placed on the frame 731, and the fixed bin 73 is placed on the frame 731.
2a. On the other hand, in synchronization with the descent of the slash mold $1, the material box 75 loaded with powder material is pushed up from the turntable 77 by the scissor lift 79, and while its flange is positioned below the frame 731, the fixed bin 732b Fixed by As a result, the slash mold S1 and the opening of the material box 75 are in a state facing each other.

In this state, the 1st movement device 73 operates to move the frame 731 18
Rotate 0° and rock for 15 seconds. At this time, the powder material in the material box 75 is transferred to the slush mold S1, adheres to the mold surface, and begins to melt. Next is sludge length.

The frame 731 is inverted so that the mold S1 is placed above, and the powder material not attached to the mold surface is returned to the material box 75 and collected. At this time, about 1 mm of molten powder material remains on the mold surface of the slush mold S1. Then, the lift rod 791 of the scissor lift 79 extends and supports the bottom of the material box 75 with its tip end surface, and after the fixed bin 732b is released, the material box 75 is returned onto the turntable 77. In addition, the material box 75
When the powder material has been supplied a predetermined number of times, the turntable 77 rotates 1200 times to replace the material box, and the next material box 75 is prepared above the scissor lift 79.

Then, the slush type S1 is lifted up by the guide lifter 71, passed to the clamper 35 of the rear truck 3, and transported to the cooling station 5 by the rear truck 3. When the rear truck 3 reaches the cooling station 5, the first lifter 55
As the slush mold S1 rises, the slush mold S1 is transferred to the clamp portion 573 of the first mold reversing device 57, and after being turned upside down, the nineteenth lid 55 is lowered. As a result, the slush mold S1 enters the main tank 533 of the cooling water tank 53 and is immersed in the temperature-controlled water 537 at approximately 70° C. for 40 seconds. The slush mold S1 is cooled, and the molten powder material adhering to the mold surface of the slush mold S1 is solidified. After a predetermined period of time has elapsed, the first lifter 55 rises and the slash type S
1 is vertically reversed by the first type reversing device 57, and then clamped by the clamper 25 of the front platform weight 2, and the receiver is passed. The front truck 2 then travels guided by the guide section 1, and the slush die S1 is transported to a position above the demolding station 4.

Concurrently with this, the elevating lifter 43 rises, and the slush mold S1 is picked up by the mold clamping portion 453 of the mold rotating device 45. After the slush mold S1 is lowered by the lifting lifter 43, it is rotated by 90" by the mold rotation device 45, and the mold surface side of the slush mold S1 is directed toward the operator A. Then, the powder is melted and solidified on the mold surface of the slush mold S1. The body material (in this case, the product) is peeled off from the mold surface by an operator.This completes one cycle of the process.

The above describes the process of one cycle of one slash type S1 in two steps.
This shows the case where the setting is set to complete in 80 seconds.

As shown in the time chart of FIG. 12, the next slash mold S2 starts its process 70 seconds after the start of the process of the slash mold S1. Then, this slush mold S2 is transported from the demolding station 4 to the first heating station 6 by the front truck 2.

That is, 70 seconds after the slush mold S1 is heated at the second heating station 6', the slush mold S2 is transported to the first heating station 6 and heated.

While the slush mold 2 is being heated at the first heating station 6, the slush mold 1 that has been heated at the second heating station 6' is transported to the material supply station 7 by the rear truck 3. During this time, the next slash mold 3 sent 70 seconds after the slash mold 2
The slush mold 2 is transported by the front truck 2 to the second heating station 6', and then the slush mold 2, which has been heated at the first heating station 6, is transported by the rear truck 3 to the material supply station 7.
Transport to. The next slush mold 4 starts the process 70 seconds after the slush mold 3, and after the second slush mold 2 is heated at the first heating station 6 and transported by the rear truck 3 to the material supply station 7, the front truck is fed into the first heating station 6 by the heating process.

During one molding cycle, the front carriage 2 moves between the demoulding station 4 and the second heating station 6', and the rear carriage 3 moves between the cooling station 5 and the material supply station 7, so that each slush is The molds 81 to S4 are transported.

As described above, the powder slush molding apparatus of this embodiment has two
4 slash type S1 to S4 with 2.3 trolleys, 1
The front truck 2 is fed sequentially to each of the four stations: the 1t2 type station 4, the first (or second) heating station 6 (or 6'), the material supply station 7, and the cooling station 5. 1 heating station 6 or 2nd heating station 6
′ alternately feed the slash type. That is, the slush mold can be alternately conveyed to two heating stations, and the slush mold can be heated independently and simultaneously at each heating station. Therefore, it becomes possible to heat one slush type for a long time. As a result, four slush molds can be fed at 70-second intervals within one molding cycle, and this time (hereinafter referred to as takt time) enables high-cycle production.

In addition, since the cooling station 5 and heating station 6, which require thermal energy, are arranged separately and independently, the energy required for one product is 1 ounce compared to one-mold molding.
It becomes possible to reduce it to about 73 to 1/2. Furthermore, although the demolding station 4 is the only step that requires manpower, one person can perform four times as much work 51 as in the past, centralizing the work and significantly reducing losses.

Furthermore, since the time at this demolding station is the rate-determining step, the takt time can be shortened by speeding up the demolding operation. In addition, since the four slash molds 81 to S4 are transported by two carts, the front cart 2 and the rear cart 3, the transport can be carried out efficiently using the minimum number of carts without interfering with each other. can.

[Effects of the Invention] The powder slush molding apparatus of the present invention includes at least four slush molds, one linearly extending guide portion for conveying the slush molds, and a guide portion that is guided by the guide portion and is constantly in contact with the guide portion. A front truck and a rear truck located in the front direction of the section, and a demolding station, a cooling station, a first heating station, and a first heating station arranged along the guide section and behind the front of the guide section in the following order. It consists of two heating stations and a material supply station. As a result, the four slush molds are sequentially transported by the front truck and the rear truck to the demolding station, the first (or second) heating station, the material supply station, and the cooling station, and the work process at each station is carried out by the four slush molds. This can be done simultaneously for slash types. Therefore,
Four molded products can be obtained within the molding cycle unit required for slush molding, and productivity can be improved four times compared to conventional equipment.

Further, in the powder slush molding apparatus of this embodiment, two heating stations are provided and these can be used independently and simultaneously, so it is possible to heat one slush mold for a long time.

Therefore, takt time can be shortened and high cycle production is possible. Since the rate-determining step is the time required for the demolding station, it is possible to speed up single-party work (thus shortening the takt time).In addition, since there is more leeway in heating time, a fluidized bed furnace is used as the heating device. When used, the fluidized bed furnace and slush mold can be covered with a lid, which can prevent sand from scattering and sand from entering the slush mold, and can sufficiently remove sand from the slush mold. When using a heating device using a heating medium, the temperature of the heating medium can be lowered, making it possible to heat at a lower temperature for a longer period of time.This makes mold temperature uniform, prevents mold cracking, and reduces equipment preparation time. In addition, since two heating devices are used, production can be continued even if one heating device breaks down.Furthermore, by changing the settings of the two heating devices, production can be performed in two ways. It is possible to achieve the following film-forming conditions.

[Brief Description of the Drawings] Figures 1 to 12 relate to embodiments of the present invention, with Figure 1 being a side view schematically showing the general configuration of a powder slush molding device, and Figure 2 being a side view of the front truck. 3 is a side view of the demolding station, FIG. 4 is a front view thereof, FIG. 5 is a sectional view of the cooling water tank, FIG. 6 is a side view of the cooling station, and FIG. 7 is a side view of one side of the station. Front view, Figure 8 is a sectional view of the fluidized bed furnace, Figure 9 is a cross-sectional view of the fluidized bed furnace.
The figure is a front view of the material supply station, FIG. 10 is a plan view of the rocking device, FIG. 11 is a plan view of the turntable, and
FIG. 2 is a time chart when carrying out the molding process. 1...Guide part 2...Front truck 3...
Rear truck 4...Demolding station 5...
Cooling station 6...First heating station 6'...Second heating station 7...Material supply stations 81-S4...Slash type Figure 2 Patent applicant Toyota Motor Corporation Agent
Patent Attorney Hiroshi OkawaFigure 8Figure 6Figure 10

Claims (1)

[Claims] (1) At least four slush molds, one linearly extending guide part, and a front truck and a rear carriage guided by the guide part for transporting the slush molds and always positioned in the front and back direction of the guide part. A demolding station, a cooling station, a first heating station, a second heating station, and a material supply station are arranged along the guide part and from the front to the rear of the guide part in the following order. Characteristic powder slush molding equipment.