JPH02172704A - Belt-correcting method in forming machine for pressure forming between belts and its device - Google Patents

Abstract

PURPOSE:To make the pressurizing forming plate with smooth surface by a method in which in the forming machine forming a platelike body by pressing the material to be formed with upper and lower belts, while the forming material is fed between the belts made of steel, the belts are pressed from their front and rear sides in the part except their forming parts with rollers, whereby the deformation in the front and rear directions is corrected. CONSTITUTION:Each belt 15, 16, 17, 18 of upper and lower stages is continuously moved respectively in arrow direction by the rotation of rotary rollers 6-13. The forming material 33 fed from a hopper 34 is prepared into a prescribed amount with a rubbing-cutting plate 41, and is sent to the upper and lower belts 15, 17, and then is pressure-formed into a prescribed thickness with pressurizing roller groups 31, 32. In the meanwhile, the belt 17 of the lower stage having been deformed into unevenness due to its pressure-forming, is corrected flatly, while the belt passes through the gap between the rollers of a correcting device 35. Consequently, the forming machine can perform continuously the pressurizing and forming plate with smooth surface.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a belt straightening method and apparatus for a molding machine that performs pressure forming between belts.

[Prior art]

Conventionally, as shown in the drawings, an endless belt mechanism consisting of an endless belt passed between spaced rotating rollers is disposed vertically facing each other, and the forming gap between these two belts is separated from the upstream part on the raw material supply side. The downstream part is wide and the downstream part is narrow, and the cultivated soil or granular molded material IF4 supplied on the lower heald is moved to the downstream part with the heald, and as it moves, pressure is gradually applied between both belts, and several There is a single-pressure molding machine that can be used to form an inorganic molded plate (ceramic plate) for a doll with a thickness of mm to 300 mm.

(Problems to be Solved by the Invention) In this pressure molding machine, the belt deforms unevenly in the front and back directions during long-time molding, resulting in the formation of continuous unevenness in the molded product. be.

In other words, when a thin stainless steel heald that is moved (driven) by the rotation of a rotating roller is pressurized by a group of pressure rollers attached to the same belt (each roller is pressurized by a hydraulic cylinder). In particular, the steel belt on the lower stage side, which is the pressure-receiving side, is deformed, which causes deformation of the pressure-formed plate.

[Specific Means for Solving the Problems] The present invention is intended to solve the above-mentioned problems. A molding material is supplied to the molding material and the molding material is pressed by both belts to mold the plate-shaped body.In a portion other than the molding part, the belt is pressed from the front and back sides with rollers, A method for correcting a heddle in a molding machine that performs pressure molding between bells 1, characterized in that deformation in the front and back directions of the heddle is corrected; A molding material is supplied between the steel belts provided, and it is pressed by both bells 1- (in a part other than the molding part, the bell i- This is a belt straightening device for a molding machine that performs pressure forming between belts, characterized in that a pair of rollers are disposed oppositely on the front and back sides of the belt I' so as to press the front and back sides of the belt.

[Effect]

Steel belts arranged in parallel on the upper and lower sides are continuously run, and powdered or granular molding material is supplied between these belts. The supplied molding material is sequentially transferred by belts and is gradually pressure-formed between the steel belts. The belt sometimes deforms slightly unevenly in the front and back directions due to pressure, but this deformation is corrected into a flat shape each time the belt passes between straightening rollers that are pressed from the front and back sides. Therefore, since the heald is in a flat state during pressure molding, a pressure molded plate with a smooth surface can be produced.

[Example] Hereinafter, drawings showing examples of the present invention will be described.
In FIGS. 1, 2, and 3, a pressure molding machine 1 includes a machine frame A and upper and lower endless belt mechanisms B and C attached to the machine frame A.

These endless heald mechanisms BC are arranged above and below the planned transfer trajectory X of the molding material with a gap for pressurizing the molding material therebetween. The machine frame A includes a lower frame 3 installed on the floor 2, middle frames 1 and 4 arranged parallel to the same frame, and an upper frame 5 that is shorter than the middle frame and further stacked on the middle frame 4. Equipped with. The lower frame 3 and the middle frame 1.4 constitute a frame for the endless belt mechanism C on the lower side. The upper frame 5 and the middle frame 4 constitute a frame of the upper endless belt mechanism B.

Next, the endless heald mechanisms B and C will be explained.

Rotatable rollers 6 to 13 are pivotally supported at both ends of each of the upper and lower frames.

Among the above rotating rollers, the rotating rollers 10 to 13 located on the right side in the drawing are chain-driven by an electric motor N14, and the rotating roller 6 located on the left side (material input side) in the drawing.
-9 are non-driven type. 15 is a pair of outer rotating openings on the upper stage side ~ 8.13 An endless belt with a hook passed between them,
16 is an endless belt that is passed between a pair of rotating rollers 9 and 12 located on the inside, 17 is an endless belt that is passed between a pair of rotating rollers 7 and 11 on the lower stage, and 18 is a pair that is located on the inside Endless belts are shown passed between rotating rollers 7 and 10, and these belts are all thin stainless steel belts. 31 is a group of multi-stage pressure rollers attached to the inner surfaces of the ring stitches 5 and 16 in the part where the bell stitches 5 and 16 are overlapped (pressure section) in the endless belt mechanism B on the upper stage side. For example, about 30 rollers are used. Reference numeral 32 designates a similar multi-stage pressure roller group provided inside the portion where the bell stitches 7 and 18 are stacked in two in the endless belt mechanism C on the lower stage side.

Each roller of the upper pressure straw group 31 is pressed downward (to the lower pressure roller side) by a pressure device, for example, a hydraulic cylinder 42, and the distance between the upper and lower pressure rollers can be adjusted. It can be done at will. Note that each roller of the upper pressure roller group 31 has a corresponding lower pressure roller group 31.
The inorganic molding material 33 passing between the upper and lower belts is gradually pressurized by the movement of the belt. It looks like this. 37 is a prime mover for the pressure roller; 38 is a speed reducer connected to the prime mover 37 at one end; and connected to the pressure roller at the other end. In addition, numeral 34 shown in Fig. 3 is a material loading bar installed on the frame on the lower side, and the bell [-17
Located above and in front, a molding material, for example an inorganic molding material 33 in the form of t'i) or in the form of granules, can be supplied.

Reference numeral 35 denotes a heald straightening device attached to the belt 17 on the lower stage side.
It is formed to have the same length as the width of No. 7, and the facing interval g is
The unevenly deformed bell 17 is passed between the same rollers 35 to be pressed and corrected into a flat shape.

In addition, in this embodiment, a plurality of l-talks 36 are installed to provide a roller number of 1. ii) If there is no need to provide a defeat, one each (one pair) of "-" and "lower" may be used. Also,
When a plurality of rollers 3G are arranged in parallel, the gap g between the rollers 3G is set so that it gradually narrows as the heald 17 moves forward. Further, a pressurizing means such as a hydraulic cylinder 44 may be provided to increase the pressing force against the heald passing through each day. Bell 1 above
In this embodiment, the correction device 35 is attached to the lower heald 17 where deformation is most likely to occur, but if the deformation of the lower heald after molding can be corrected, it may be limited to the position shown in the figure. For example, it may be in the position of the mouth in Figure 3. In addition, the molding machine uses a rotating roller 6 when each heald meanders left and right with respect to the running direction (movement direction).
A meandering correction device 40 is provided, which rotates the rotating shaft of 9 to the frame and returns the heald to its normal position relative to the rotating roller. The rotation I is caused by the signal from the same detection unit.
The actuator is configured to move the shaft of the cola by 1q1.

Next, the operation of the molding machine ↓ with the above configuration will be explained.

Each of the upper and lower belts 5, 16, 17, and 18 is continuously moved in the direction of the arrow by rotating rollers 6 to 130 times.

Then, the supplied molding material 33 is supplied from the hopper 34 onto the lower half of the chamber which is being moved.

The supplied material 33 is kept in a constant amount by the scraping plate 41, and is sent to the upper and lower bells 15 and 17. The fed material 33 is applied to pressure roller groups 31 and 32.
The pressing force is gradually increased, and the material is pressure-formed to a predetermined thickness. Then, a long solid-free molded plate 33' is produced. After this pressure-formed plate is cut into a predetermined length by a cutter 43, it is fired under predetermined firing conditions in a firing furnace such as a roller heel torso.

On the other hand, in the forming machine, the lower heald 17, which has been unevenly deformed by pressure forming, is straightened into a flat shape while passing through the gap g between the straws of the straightening device 35. Since the deformation does not occur every time molding is performed, if it is unnecessary, the distance between the rollers 36 is widened to make them independent of the heald.

FIG. 4 shows another embodiment of the present invention, in which a Heald straightening device 35a is constructed using rotating rollers 6 on which bells are mounted. That is, rotating roller 6
A pressure roller 36a is disposed opposite to the outer periphery of the heald 17, and the pressure roller 6 is pressed against the surface of the heald 17 by a hydraulic cylinder 44a or the like to straighten the heald 17. It is.

Furthermore, without attaching each of the heald straightening devices 35□35a to the molding machine, a pressure roller 35b is prepared separately from the molding machine, and the worker applies the force 11 pressure roller 361) to the rotary roller 6 by Hiragishi. [7] Correction by pressing and holding may be performed.

(Device of the Invention) In the present invention, the uneven deformation of the belt that occurs during pressure molding is corrected to a flat shape while the molding machine is operating (while the Hell I- is moving). Can be done.

Therefore, the molding machine can continuously produce pressure-formed plates with smooth surfaces. Moreover, by adding a correction roller to the molding machine, belt deformation can be automatically corrected during operation, so you can easily correct deformed belts!・This eliminates the need for troublesome work such as installation and removal, making it extremely efficient.

Further, since the belt straightening device is composed of rollers, the structure is simple and therefore the cost does not increase significantly.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic side view showing a state in which the belt is installed, FIG. 2 is a front view of the molding machine with some parts omitted, FIG. The figure is a side view of main parts showing another embodiment.

Claims (1)

[Claims] 1. A forming material is supplied between steel belts arranged in parallel above and below, and the material is pressed by both belts to form a plate-like object. A forming machine for pressure forming between belts, characterized in that the belt is pressed by rollers from the front and back sides of the belt in parts other than the forming part to correct deformation in the front and back directions of the belt. How to straighten a belt. 2.In a device in which a molding material is supplied between steel belts arranged in parallel above and below, and the material is pressed by both belts to mold a plate-shaped object, other than the molding part. A belt straightening device for a forming machine that performs pressure forming between belts, characterized in that a pair of rollers are provided oppositely on the front and back sides of the belt so as to press the front and back sides of the belt.