JPH05345323A - Reprocessed foam forming device - Google Patents

Abstract

PURPOSE:To efficiently and surely obtain reprocessed article without chemically treating recovered plastic foam by a method wherein the reprocessed article is obtained by embossing foams, which are produced by grinding them into chips such as recovered waste packaging material and, after being heated, put in a form. CONSTITUTION:With a raw material feeding means A, raw material, which is prepared by chipping foam, is fed with a bucket 4 by every certain amount in a raw material charging means B. The raw material charging means B introduces the raw material fed with the raw material feeding means A under the condition being heated with hot air blasting from a blowing port 23 while being agitated with agitating element 22 at a thermal agitating part 21 in a form 33. The rocking arm 36 of a switching means C has an attaching and detaching head 39 for transferring the upper lid of the form between the form 33 and a setting stand, while a rocking arm 30 has a suction head for unloading a ready-made from a form. On the turn table 40 of a circulatory transferring means D, a plurality of forms 33 are disposed in row at equal intervals so as to successively and intermittently feed the forms 33 to respective working positions in order to press the raw material in the form 33 with the pressure plate of a pressure molding means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is widely used for packing electrical products and various other products, especially products for which impact resistance must be sufficiently taken into consideration, and is treated as a waste after the intended purpose. Foam for packing polyurethane foam (waste material)
The present invention relates to a foam reclaimed product molding apparatus that can be easily reused as a pallet, another packaging material, or another secondary product.

[0002]

2. Description of the Related Art In recent years, not only industrial waste but also packaging and packing materials have increased in number, causing various pollution problems. Of these, even if they are discarded, they will be returned naturally (rotation = decomposition)
It is not easy to dispose of plastic waste that is not treated, and it is a difficult process in any field.In particular, foams such as polyurethane are bulky and obstructive. Although it is being attempted to melt and re-form, the present situation is that it has not yet reached the level of practical application.

[0003]

However, as long as the secondary product can be efficiently decomposed chemically as described above and the profitability can be obtained, it is the most effective use of resources and the ideal However, they are out of the experimental area and far from practical use. or,
The means for remolding must also be softened to defoam the foam to restore it to a viscous liquid, which must be put into a molding machine for processing, and the work process is troublesome.
In terms of productivity, profitability is a problem. Therefore, the present invention makes the foam a certain size without any special treatment,
By heating and press-molding as it is, it is intended to efficiently obtain a secondary product having a predetermined shape.

[0004]

[Means for Solving the Problem] Raw material supply means, charging means for heating and agitating the raw material, averaging the raw materials, and charging the raw material into the mold, and moving the upper lid of the mold from the mounting table, or Circulation transfer that cools the product and the mold by sequentially transferring the molded product from the mold, such as replacement means, pressure molding means, and multiple molds to a predetermined work position. And means.

[0005]

The waste material such as polyurethane is made into a chip of a predetermined size and used as a raw material, and the raw material is supplied to the charging means by the raw material supply means, and the raw material is stirred by the charging means. The chips are heated to an average, preheated directly under the raw material supply guide, dropped into the waiting mold, and then the upper surface of the chip-shaped raw material is averaged. On the other hand, the mold top lid, which has been left on the mounting table by the replacement means, is placed on the mold and once preformed to adjust the shape, and then the mold is moved to the position of the pressure molding means. Then, the pressure is applied by a pressure press to obtain a secondary product having a predetermined shape. After that,
The cold water is introduced into the mold to cool the product to stabilize its shape, and the product is returned to the position immediately below the charging means, where the replacement means removes the molded product from the mold and places the product on the temporary stand. In the meantime, the preparation for the next molding is carried out in the meantime, and the continuous molding is successively carried out by repeating the above steps.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the embodiments shown in the drawings, as shown in FIGS.
The outline is as follows: raw material supplying means A, charging means B for charging the raw material into a mold (die), and replacement means C for taking out a ready-made product from the mold and performing a raw material receiving operation for the next molding.
, A pressure molding means D, and a circulation transfer means E for sequentially moving a plurality of molds to respective work positions.

First, the raw material supply means A is provided with two guide rails 2, 3, 2, 3 vertically along the vertical frame 1 on both sides of one side (FIG. 7). The upper end of the guide rail 2 is bent outward or at a right angle at a position lower than the upper end of the guide rail 3 to form a curved portion 2 ', and the guide rail contains the raw material. The bucket 5 is supported by the rollers 5 and 6 by fitting the roller 5 pivotally mounted on the upper side surface of one bucket 4 and fitting the roller 6 pivotally mounted on the lower side surface to the guide rail 3. And guides it up and down, and on the lower part of the vertical frame 1, on a shaft pivoted on the lower ends of the guide rails 3, 3, the sprocket 9, 3 is provided at a position corresponding to the guide rails 3, 3, respectively. 9 is fitted and on the upper end portions of the guide rails 3, 3. For the above, the sprocket 9,
9 and the corresponding sprockets 9'and 9'are pivotally installed, and chains 10 and 10 are respectively stretched between upper and lower opposing sprockets, and both ends of each chain 10 and 10 are connected to rollers 6 and 6, respectively. Of the lower sprocket 9, 9 is fixed to the both ends of the shaft and has an endless shape, and the sprocket 8'is fitted to the outer end of the lower sprocket 9, 9 and the sprocket 8 fitted to the output shaft end of the electric motor 7 (Fig. 7) The chains 10 and 10 are circulated in a predetermined direction by linking the chains with a chain.

Next, charging means B for charging the raw materials into the mold
Is composed of a damper section 16, a heating stirring section 21, and a guide section 24, and is supported by the machine casing 11 beside the raw material supply means A, as is apparent from FIG. First, a damper part 16 is provided at the uppermost position, and a shooter 12 for guiding the raw material fed from the raw material supply means A is provided in a body part of the damper part main body 17 in a slanted state near the main body and inside thereof. Is provided with a stopper 13 which is operated by a shaft 14 ′ pivotally mounted on the machine frame 11, and an arm 14 fitted on the outer end of the shaft 14 ′ is attached to a piston rod end of a cylinder 15 installed on the machine frame 11. Connect them,
By operating the cylinder 15, the shooter 15 can be opened and closed.
A cover plate 18 for preventing the heat of the heating and stirring unit 21 connected directly below the heat transfer unit from being released is fixedly installed on a shaft 19 ′ pivotally mounted on the machine frame 11. The shaft 19 'opens and closes the cover plate 18 by directly connecting the arm 19 fitted to the outer end and the piston rod end of the cylinder 20 installed on the machine frame 11. Further, the heating and stirring section 21 mentioned above is attached directly below the damper section 16, and its structure is provided with a bottom lid that can be freely opened and closed at the lower end, and is internally rotated at low speed or shakes electrically. A pair of moving stirring blades 22, 22 are horizontally installed, and hot air inlets 23, 23 ... Are provided on the lower side portion thereof. or,
As shown in FIG. 11, the guide portion 24 is provided with a leveling plate 26 that is horizontally reciprocated by a cylinder 27 fixed outside the main body 25 near the lower portion of the guide main body 25. The main body 2 is provided below the leveling plate 26.
5, a bottom plate 28 which slides by a cylinder 29 protruding from the outside is attached to open and close the bottom of the guide unit main body 25, and a mold for waiting the raw material heated by the heating and stirring unit 21 at the bottom. The guide portion 2 is located at a position where it can be surely guided inward, and after the raw material is completely supplied into the mold.
4 moves from between the heating unit 21 and the mold, and automatically avoids to a position (moving to the upper side) that does not hinder the subsequent operation.

Next, the exchanging means C has an arm 36 swinging by the brake motor 37 and an arm 30 swinging by the brake motor 31 on the upper part of the column 47 standing on the side of the machine frame 11. Each of them is pivotally supported concentrically, and a top cover of the mold can be attached to and detached from the tip of the arm 36.
In addition, an upper lid attaching / detaching head 39 is provided which allows the upper lid to be moved up and down by a cylinder 38, and a take-out head 32 having a suction cup for exclusively taking an existing product formed in the mold is provided at the tip of another swing arm 30. The take-out head 32 is attached by a cylinder 34 so as to be vertically movable. In addition, both swing arms 30, 36 are set to 1
Each head 3 is in a position rotated in the direction of 80 °.
A temporary placing table 41 and a placing table 42 of the form top cover are respectively installed at positions corresponding to positions directly below 2, 39.

Further, the circulation transfer means D has a turntable 40, which is equally spaced so as to sequentially feed a plurality of molds 33, 33 ... Is rotatably and horizontally rotatably supported by a roller, and is rotated on the turntable 40 at a constant speed intermittently in a predetermined direction by an electric motor 45 via a gear 46 attached to the lower surface of the turntable 40. Each formwork 3 installed
A hot air supply pipe 43 'is automatically connected to each of the molds when the mold reaches the working position of the raw material feeding means B. 42 from the hot air generator 43 installed on the side of 42
After that, hot air is supplied to the stand-by form to sufficiently heat the form. Further, a jacket for passing cooling water is provided around the mold to cool the mold after molding.

Further, as shown in FIG. 3, the press-molding means E advances one turn forward on the turntable 40 from the position of the charging means B.
It is placed in the position (in the direction of the arrow) and its configuration is shown in Figure 1.
2, the turntable 40 and the table 40
Upper jaw 4 so as to be sandwiched from above and below with the upper frame 33 in between
9 and the lower jaw 52 form a machine frame 48.
An upper pressure plate 51 facing the upper surface of the form 33 is fixed to the lower end of the piston rod of the cylinder 50 mounted on the bracket 49 'on the upper jaw 49, and the bracket 52' is attached to the lower jaw 52 on the machine frame 48. A mold support plate 54 facing the bottom plate of the mold 33 is fixed to the upper end of the piston rod of the cylinder 53 attached to the above through a turntable space 55. In the above-described embodiment, the turntable is provided with six molds, but it may be arbitrarily changed depending on the scale of the entire apparatus due to design changes.

Next, a series of operations of the apparatus having the above-mentioned structure will be described. In the apparatus of the present invention, the waste material of the foam such as polyurethane foam collected by a collecting company, volunteers, etc. is previously chipped (3 to 5 cm) by another crushing device. ³ ), this is made into a raw material, and it throws in in the bucket 4 of the raw material supply means A. In this case, an inner box made of paper such as corrugated cardboard is pre-installed in the bucket 4, and when a predetermined amount of raw material is charged, the electric motor 7 rotates in a predetermined direction at a constant speed, and the sprocket 8 at the output shaft end is rotated. And the driven shaft is rotated through the sprocket 8'at the end of the driven shaft. According to this, the two sprockets 9, 9 fitted on the left and right on the driven shaft also rotate, and each chain 1 stretched between the upper and lower sides of the vertical frame 1 is extended.
0 and 10 are also circulated, and the bucket 4 connected thereto is guided by the respective rails 2, 3, 2 and 3 and ascends, and at the upper end portion, first the rollers 5 and 5 are the curved portions of the upper ends of the rails 2 and 2. 2 '
, The rollers 4 and 6 are further lifted by the lifting of the chain 10, so that the bucket 4 is
Here, the bucket tilts forward as shown by the chain line in FIG. 5, and the bucket temporarily stops at this position. That is, the mouth portion of the bucket 4 is directed obliquely downward, the contained raw material is put into the shooter 12, and the raw material is received by the stopper 13 in the shooter for a certain period of time, that is, the supplied raw material is heated and stirred and in the mold. In consideration of the time required for preparation from the time of being put into the container to the temporary suppression, the process is made to stand by here and the timing of the flow of continuous work as a whole is aimed at. The bucket released here returns to the lowest start position of the vertical frame 1 in order to receive the next raw material input by the chain drive again.

Next, the cylinder 15 is operated to open the stopper 13 in the shooter 12 and guide the raw material standing by in the shooter 12 into the damper section 16. At this time, the cover plate 18 of the damper section 16 is operated by the cylinder 20. Axis 19 'running
It is in an open state by rotating upwards from the starting point, so that the raw material falls into the heating and stirring section 21 and the raw material is stirred by the stirring section 2
1 is completely closed, the lid plate 18 is closed again, and the heating and stirring section 21 is held by a bottom lid (not shown) provided at the lower end portion and stirred by the stirring blades 22 and 22 to lower the lower portion. It is sufficiently uniformly heated for about 5 minutes by hot air of about 160 ° C. blown from the hot air inlets 23, 23 provided near the periphery. At this time, the respective arms 30, 36 of the replacement means C are set to 1
It is in a position opened by 80 ° and is in a state of not existing immediately below the stirring unit 21. Next, a mold is set on the turntable 40 just below the charging means B, and the mold is sufficiently heated by receiving the hot air from the hot air generator 43. In the meantime, the guide part 24 is moved from the side part of the heating and stirring part 21 so as to correspond to just below the raw material dropping port of the heating and stirring part 21, and in this state, the bottom lid of the stirring part 21 is opened to heat the heated raw material. The material is quickly dropped into the mold 33. At this time, after the raw material is once received and held by the bottom plate 28 in the guide 24, the guide unit drop opening matches the upper surface of the mold 33. When this is confirmed, the cylinder 29 is operated, the bottom plate 28 is moved outwardly, the bottom is opened, the raw material is dropped into the mold 33, and the cylinder 27 of the guide portion 24 is horizontally reciprocated horizontally to reciprocate horizontally. After smoothing and averaging the upper surfaces of the raw materials put into the mold by the plate 26, the guide part 24 is retreated to a lateral upper part from between the mold and the heating and stirring part 21 (automatically moves). ) Do.

In this way, the raw material is put in the mold, and the upper arm held by the upper cover attaching / detaching head 39 on the mounting table (FIG. 3) 42 is rotated by the rotation (clockwise direction) of the rear arm 36. The raw material is temporarily held in the shape of the mold by moving it to a position right above the mold 33, placing it on the raw material in the mold, and pressing the detachable head 39 by the operation of the cylinder 38. Next, the cylinder 38 is operated to cause the detaching head 39 to escape from the form, and the turntable 4 of the circulation transfer means D is moved.
0 is intermittently fed by one node in the direction of the arrow (FIG. 3) to move the filled mold to the upper pressure plate 51 of the pressure molding means E and the mold support plate 5.
4, the cylinder support 53 is moved up through the space 55 of the turntable 40 by the operation of the cylinder 53 to support the lower surface of the mold 33, and the pressure of 20 t during molding ( (2 kg / cm ² ), while stabilizing the mold, the upper cylinder 50 is operated to lower the pressure plate 51 toward the upper lid surface of the mold 33, and the raw material in the mold is predetermined through the upper lid. Then, the upper lid is clamped to the mold in that state, and at the same time, the pressures of the upper and lower cylinders 31 and 37 are released to be sent to the next work position by intermittent rotation of the turntable. That is, in the embodiment of the present invention, the next step is a mold cooling step, and thereafter, the mold is a cooling step up to the position one node before being returned to immediately below the charging means B. In this cooling step, cold water is used to promote the cooling of the mold and the product, but the cooling water is not limited to this, and there may be a means for spraying the cold water toward the mold and the product in a shower shape.

At the stage one knot before reaching the position of the throwing means B, the upper lid of the mold which has been already clamped is manually operated.
It is released by the (automatic) operation and sent to a position directly below the charging means B. At this time, the swing arm 36 of the switching means C has already been moved to the position shown in FIG.
At the same time, the upper lid attaching / detaching head 39 is rotated again in the clockwise direction to grab the upper lid of the released mold, and immediately the arm 36 is rotated counterclockwise to place the upper lid on the mounting table 42. It is placed on the top, and it stands by until the next operation, that is, the ready-made product is taken out and the raw material is charged. At the same time, the other swinging arm 30 is rotated counterclockwise so that the take-out head 32 is made to correspond to the product, and the operation of the cylinder 34 brings the take-out head 32 into close contact with the upper surface of the product. The product is adsorbed and taken out by, and the swinging arm 30 is again rotated in the clockwise direction to transfer the product onto the temporary placing table 41 of the product shown in FIG. 3, and each swinging arm is made to stand by at that position. The molding cycle is finished, and at the same time, the mold from which the molded product has been taken out is heated by the hot air from the hot air generator 43 and is ready for the next operation. All the above operations are automatically performed by computer control.

[0016]

Industrial Applicability According to the present invention, the waste material for the package collected as described above, that is, foam such as urethane foam is crushed into chips, which is heated and put in a mold, and only the mold is pressed. Since we are trying to obtain recycled products in the process, since the waste materials are only crushed, we can obtain recycled products with only a simple process without treating with chemicals or delicate humidity operation. Therefore, it can be easily operated by many people without requiring special technology. In addition, since the recycled material can be immediately made into a recycled product without returning the waste material to the raw material of the foam, there is no need for an expensive extruder, and the cost is low and the management is easy. ..

[Brief description of drawings]

FIG. 1 is a schematic front view showing the entire device of the present invention.

FIG. 2 is a right side view of the above.

FIG. 3 is a schematic plan view of FIG.

FIG. 4 is an enlarged view of the lower half of the raw material supply means of FIG.

FIG. 5 is an enlarged view of the upper half of the above.

FIG. 6 is an enlarged left side view of FIG.

FIG. 7 is an enlarged plan view of FIG.

FIG. 8 is an enlarged view of the tamper portion of FIG.

FIG. 9 is a right side view of the above.

FIG. 10 is a plan view of FIG.

11 is an enlarged perspective view of the guide portion of FIG.

FIG. 12 is an enlarged schematic side view of the pressure molding means.

[Explanation of symbols]

 1 Vertical Frame 2, 3 Guide Rails 4 Bucket 11 Machine Frame 16 Damper Part 21 Heating Stirrer Part 24 Guide Part 30, 36 Swing Arm 32 Product Extraction Head 33 Form Frame 39 Top Lid Attachment Head 40 Turntable 41 Temporary Stand 42 Placement Table 44 Guide rail 45 Electric motor A Raw material supply means B Input means C Replacement means D Circulation transfer means E Pressure molding means

Claims (1)

[Claims] 1. A raw material supply means for supplying a fixed amount of a regenerated raw material obtained by chipping a waste material of a foam such as polyurethane, and heating the supplied raw material while stirring it, and in the formwork. Charging means having a function of evenly averaging the upper surfaces of the raw materials charged into the mold, and a swinging arm and a mold for moving the upper lid of the mold onto the mounting table or moving from the mounting table onto the mold. A replacement means consisting of a swing arm for taking out the molded product in the frame and moving it to a temporary placement table, a pressure molding means, and a plurality of molds are held and the work positions such as the charging means and the molding means are passed. A foam remanufactured product molding apparatus comprising: a circulation transfer unit configured to cool a molded product and a mold while sequentially circulating the same.