JP4784205B2 - Equipment for supplying molding material to crusher - Google Patents

Description

  The present invention relates to an apparatus for supplying a molding material to a crusher that feeds the molding material to be crushed to a crusher in order to crush the molding material that has been formed into a sheet after kneading into a powder form by a crusher. is there.

  Thermosetting resin molding materials such as phenol resin molding materials and melamine resin molding materials are widely used in applications such as electrical insulation parts. These resin molding materials are manufactured by blending thermosetting resins such as phenolic resins with inorganic fillers such as glass fibers and organic fillers such as wood flour and pulp, and mixing and kneading them uniformly. The The resin molding material is supplied after being processed into a powder form or a pellet form in order to be able to manufacture molded products of various shapes.

  As a method for producing this powdery molding material, various raw materials are heated and mixed and kneaded using a two-roll machine or the like, and continuously formed into a sheet shape. It is used to make it into powder. In that case, after finishing mixing and kneading, in order to convey the sheet-shaped molding material while cooling it with a conveyor, and then stably crush it with a crusher, the crusher is crushed. It is necessary to supply the sheet-like molding material so as to be pushed.

  As shown in the cross-sectional view of FIG. 6 and the plan view of FIG. 7, the conventional apparatus for supplying the molding material to the crusher is used as a pushing means for supporting the molding material 51 and supplying it to the crusher 52 Some conveyors 53 were provided with a pressing belt conveyor 54. In this case, the molding material 51 is sandwiched between the conveying conveyor 53 and the pressing belt conveyor 54 and supplied to the crusher 52 while being supported. In order to supply the molding material 51 to a position where the crushing is performed in a state where the molding material 51 is reliably supported (held), a rubber belt is generally used for the pushing belt conveyor 54.

  However, in the above-described conventional molding material supply device, a rubber belt is used for the indentation belt conveyor 54. Therefore, when continuously operated, scraps and the like are generated from the rubber belt, and the product is treated as foreign matter. There was a problem of mixing. If the material of the pushing belt conveyor 54 is metal, even if the molding material 51 is pressed and supported, the molding material 51 is held between the conveying conveyor 53 and the pushing belt conveyor 54 because the molding material 51 slips. Since the force is weak and another problem arises in that the molding material 51 is stuck in the crusher 52 in the form of a sheet, it is difficult to make the belt material metal.

  Therefore, as a result of repeated studies, the inventor of the present application has proposed a molding material supply device that functions to supply a crusher while reliably supporting the molding material to be crushed which has been conveyed by a conveyor (patent). Reference 1). As shown in the cross-sectional view of FIG. 8 and the plan view of FIG. 9, the supply device is configured to convey the molding material 61 to be crushed between the conveyance conveyor 62 and the transfer conveyor 62 or the transition plate 63. It has two push rollers 64A and 64B that can be rotated and put out, and the cross-sectional shape of these two push rollers 64A and 64B is a hexagon, and is arranged at the corner of the hexagon, and the push roller 64A , 64B and 65B are made of metal protrusions 65A and 65B that are parallel to the axial direction of 64B and are rotatable and can be raised and lowered. The crusher 66 includes a rotary blade 67 and a fixed blade 68.

  Here, FIGS. 10A and 10B showing only the downstream side pressing roller 64B for the height adjustment of the pressing rollers 64A and 64B in the molding material supply apparatus and the structure that can be raised and lowered. Further explanation will be given.

  FIG. 10A shows a state where the pushing roller 64B is raised, and FIG. 10B shows a state where the pushing roller 64B is lowered. In this way, the push roller 64B is configured such that the bearing portion 70B that supports the shaft 69B can be lifted and lowered by the piston 72B of the air cylinder 71B that is a lifting means. The air cylinder 71B is fixed to the base 73B, and the piston 72B is moved by a signal from a control unit (not shown). The height of the shaft 69B when the push roller 64B is raised is controlled by the operation of the air cylinder 71B, and the height of the shaft 69B when the push roller 64B is lowered is controlled by the height adjusting means. This height adjusting means is disposed on a height adjusting plate 75B movably provided on a rod 74B fixed to a bearing portion 70B that supports the shaft 69B of the pushing roller 64B, and a base 73B. The inside is formed of a compression spring 76B through which a rod 74B passes. The base 73B is attached to a support base 77 (FIG. 11) that supports the entire pushing roller 64B. By adjusting the position of the nut 78B screwed to the rod 74B and fixing the height adjustment plate 75B, the height adjustment plate 75B can be moved to a desired position of the rod 74B and fixed.

  In the state where the pushing roller 64B is raised as shown in FIG. 10 (a), the height adjustment plate 75B is located away from the compression spring 76B, but as shown in FIG. 10 (b), the pushing roller When 64B is lowered, it comes into contact with the compression spring 76B so that the height of the shaft 69B of the pushing roller 64B can be adjusted to a desired height. As described above, in this example, the height of the shaft 69B of the pressing roller 64B can be adjusted to a desired height by adjusting the height adjusting means, and the height of the molding material 61 can be adjusted. Thus, the gap between the transport surface of the transport conveyor 62 and the pushing roller 64B can be adjusted. Similarly, the upstream pushing roller 64A can be adjusted to a desired height by adjusting the height of the shaft with the height adjusting means. The gap between the conveying surface of the conveying conveyor 62 and the upstream pushing roller 64A can be adjusted according to the thickness of the sheet.

  Moreover, the slide shaft type guide means shown in FIG. 11 is used as the raising and lowering guide means when raising and lowering the push rollers 64A and 64B in the above-described supply device. That is, the slide shafts 80A and 80B attached to the bearing portions 70A and 70B of the push rollers 64A and 64B are guided by the slide shafts 79A and 79B provided upright on the support base 77 supporting the push rollers 64A and 64B.

In the above supply device, when the molding material is roughly crushed by the pressing roller and supplied to the crusher, the roughly crushed molding material supplied between the pressing roller near the crusher side and the crusher is It has been found that the problem of staying without being pushed into the crusher has occurred, but this problem has been solved by making the cross-sectional shape of the pushing roller more than an octagon by the inventors' investigation (Patent Document 2). ).
JP 2002-282726 A Japanese Patent Laid-Open No. 2003-340311

  However, in the molding material supply apparatus described above, the slide shaft type guide means is used as the raising and lowering guiding means when raising and lowering the respective pressing rollers 64A and 64B. However, the pressing rollers 64A and 64B also have an attached motor. For example, since it has its own weight of 100 kg or more, there is a problem that an excessive load is applied to the slide shafts 79A and 79B, resulting in damage.

  Further, in the molding material supply apparatus described above, the raising and lowering control of the pressing rollers 64A and 64B is made up of air cylinders 71A and 71B, rods 74A and 74B, height adjustment plates 75A and 75B, and compression springs 76A and 76B. However, there has been a demand for a more compact structure with a larger number of parts.

  Therefore, the present invention has been made in view of the circumstances as described above, and is formed into a crusher that can smoothly perform the lifting and lowering guide of the pressing roller while effectively preventing the apparatus from being damaged by the load of the pressing roller. It is an object of the present invention to provide a material supply device.

  Moreover, this invention makes it another subject to provide the supply apparatus of the molding material to the crusher which can reduce a number of parts and can perform the raising / lowering operation | movement of a pressing roller with a more compact structure.

In order to solve the above problems, the supply device of the molding material to the crusher of the invention of the present application firstly, above the conveying conveyor for conveying the molding material to be crushed, and the crusher side end of the conveying conveyor, It is arranged so that its axial direction is orthogonal to the conveying direction of the conveyor, and it is equipped with a pressing roller that is rotatable and can be moved up and down, and is moved between the pressing roller and the conveyor by rotating the pressing roller. This is a molding material supply device to a crusher that crushes the molding material being conveyed by the conveyor and supplies the crushed molding material to the crusher, and rotatably supports the shaft of the pressing roller. And a height adjusting means for adjusting the height position of the pressing roller via the bearing section, and a lifting guide means for guiding the raising and lowering of the pressing roller when the pressing roller is raised and lowered. The height adjusting means is a load-absorbing air cylinder, and the elevating guide means is spaced apart on at least a pair of guide rollers provided on both sides of the bearing portion and a support base that supports the pushing roller. is set, Ri name of a pair of guide posts having at least one pair of guide rollers and the guide rails respectively engage rollably provided in the bearing portion, a pair of the guide rollers, pushing the roller side face of the bearing portion It characterized that you have been rotatably mounted respectively supported on the tip of the pair of guide roller support portion attached respectively to the upper and lower outward from a pair of plate-shaped portions which are formed to protrude toward the push roller side And

  The second invention is characterized in that, in the first invention, two pushing rollers are provided above the transport conveyor.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the pressing roller is a polygon whose cross-sectional shape is an octagon or more, and is parallel to the axial direction of the pressing roller at each corner of the polygon. It is characterized by comprising a metal metal strip.

According to the first and second aspects of the present invention, there is provided a molding material supply device to a crusher capable of smoothly performing lifting and lowering guidance of the pressing roller while effectively preventing damage to the device due to the load of the pressing roller. It becomes possible to provide. Further, since the air cylinder absorbs the load generated during the raising / lowering operation of the pushing roller, the height adjusting member including the rod, the height adjusting plate and the compression spring is not necessary, and the apparatus can be made compact.

  According to the invention of claim 3 of the present application, it is possible to stably supply the crushed molding material to the next step after the crushing step.

  The present invention has the features as described above, and an embodiment thereof will be described below.

  2 and 3 schematically show the structure of a molding material supply device to a crusher according to an embodiment of the present invention in a sectional view and a plan view, respectively. The molding material supply device 1 of the present embodiment includes a conveyor 3 that conveys the molding material 2 that is continuously formed into a sheet after mixing and kneading, and 2 above the crusher side end 4 of the conveyor 3. The book pressing rollers 5A and 5B are provided. The pushing rollers 5A and 5B are disposed such that the axial direction thereof is orthogonal to the transport direction of the transport conveyor 3, and are rotatable and can be raised and lowered. The material of the conveyor 3 is not particularly limited, and rubber, metal, or the like can be used. However, if the conveyor conveyor 3 is made of metal such as stainless steel, even if the conveyor 3 is washed with a solvent at the time of product change, the conveyor is transported with a solvent. 3 is preferred because it does not deteriorate.

  Each of the push rollers 5A and 5B has an octagonal cross-sectional shape, and has metal protrusions 6A and 6B that are parallel to the axial direction of the push roller at each corner of the octagon. ing. The cross-sectional shape of the pressing rollers 5A and 5B can be any shape such as a circle or a polygon. In order to solve the problem of the mixing and retention of the molding material as described above, a large number of octagons or more can be used. A rectangular shape is preferred.

  Further, the protruding strips 6A and 6B are formed over the entire length in the axial direction of the pushing rollers 5A and 5B as long as the crushed molding material 2 can exert the action of feeding the crushed molding material 2 downstream by the side surfaces 7A and 7B of the protruding strips 6A and 6B. Alternatively, a plurality of them may be formed at an appropriate interval. The reason why the protrusions 6A and 6B are made of metal is that they are excellent in durability, but the use of stainless steel as the metal used for the protrusions 6A and 6B can prevent the occurrence of rust. preferable. Further, it is desirable from the viewpoint of durability that the pressing rollers 5A and 5B are entirely formed of metal (preferably stainless steel).

  About the direction which makes protruding piece 6A, 6B protrude from pushing roller 5A, 5B, rotation of pushing roller 5A, 5B rather than the line which connects the base of protruding piece 6A, 6B and the axial center of pushing roller 5A, 5B It is preferable that the protruding strips 6A and 6B protrude so as to incline in the direction side, because the action of feeding the roughly crushed molding material 2 downstream with the side surfaces 7A and 7B of the protruding strips 6A and 6B is enhanced.

  In the molding material supply apparatus 1 according to the present embodiment, the pressing rollers 5A and 5B are periodically moved up and down to be conveyed by the conveying conveyor 3 between the pressing rollers 5A and 5B and the conveying conveyor 3. The molding material 2 is roughly crushed, and the roughly crushed molding material 2 is supplied to the crusher 8. Then, by rotating the pressing rollers 5A and 5B, the roughly crushed molding material 2 is sent to the downstream side by the side surfaces 7A and 7B of the protruding strips 6A and 6B.

  In the molding material supply apparatus 1 of the present embodiment, the crusher 8 is provided with a number of rotary blades 9 on a rotating shaft, and the crusher 8 shows a type of crushing with the rotary blades 9 and the fixed blades 10. It is possible to apply the present invention to a crusher of another method (for example, a shredder type). Further, as shown in FIGS. 2 and 3, when the transition plate 11 extending from the fixed blade 10 of the crusher 8 is arranged between the fixed blade 10 of the crusher 8 and the transport conveyor 3, the transport is performed by the transition plate 11. Since the gap between the conveyor 3 and the fixed blade 10 is covered, the coarsely crushed molding material 2 is smoothly supplied onto the fixed blade 10 of the crusher 8, which is preferable. The crusher 8 includes a cover 12.

  Next, a mechanism for driving, supporting, and raising / lowering the pressing rollers 5A and 5B will be described. FIG. 1 is a side view of a mechanism for supporting and lifting the push rollers 5A and 5B, FIG. 4 is a side view of the lift mechanism of one push roller 5A (cross-sectional view taken along the line XX in FIG. 5), and FIG. It is a top view of the bearing part of one pushing roller 5A.

  Each push roller 5A, 5B is rotatable by being driven by a motor (not shown) attached thereto. Further, the shafts 13A and 13B of the push rollers 5A and 5B are rotatably supported by the bearing portions 14A and 14B, respectively (only the bearing portion 14A of the push roller 5A is shown in FIG. 5). The bearing portions 14A and 14B can be moved up and down by moving up and down using load absorbing air cylinders 15A and 15B. It is possible to configure the control section so that the rotational movement and vertical movement of each of the push rollers 5A and 5B can be controlled independently, and to set the conditions of the rotational movement and vertical movement depending on the type of the molding material 2 Is preferable.

  Hereinafter, the bearing portion 14A on the side of the pressing roller 5A and its support and lifting mechanism will be mainly described. However, the bearing portion 14B of the other pressing roller 5B and its support and lifting mechanism also perform the same structure and operation. ing.

  As shown in FIG. 5, a pair of plate-like portions 17 project from the side surface 16 on the roller side of the bearing portion 14 </ b> A that rotatably supports the shaft 13 </ b> A of the pushing roller 5 </ b> A toward the roller side. A pair of guide roller support portions 18 are attached up and down from the plate-like portion 17 toward the outside, and guide rollers 19 are rotatably attached and supported at the tips thereof. On the other hand, a guide column 21 having a guide rail 20 is provided upright on both sides of the bearing portion 14A of the push roller 5A. A pair of upper and lower guide rollers 19 is engaged with the guide rail 20 so as to be able to roll. Each guide column 21 is joined by welding or the like in the upper part instead of bolting so that the strength is maintained.

  In the molding material supply apparatus 1 of the present embodiment, an air cylinder 15A is used as a height adjusting means. The air cylinder 15A includes a load absorbing portion (air cushion: attached to the air cylinder) 22A, and a push roller 5A. It is structured to absorb the load generated during the lifting and lowering operation. The air cylinder 15 </ b> A is fixed to the base 23.

  Next, the operation of the molding material supply apparatus 1 of the present embodiment will be described.

  After heating and kneading using a two-roll mill or the like, the sheet-shaped molding material 2 is moved to the crusher 8 side while being meandered on the conveyor 3 and cooled. The height when each of the two push rollers 5A and 5B that can be raised and lowered is adjusted to a height at which the molding material 2 can be roughly crushed, and the push rollers 5A and 5B are shown in FIG. While rotating in the direction of the arrow shown, it is raised and lowered periodically. Then, the molding material 2 that has moved on the conveyor 3 is first roughly crushed between the upstream pressing roller 5A and the conveyor 3 when the upstream pressing roller 5A is lowered. In addition, since the thickness of the sheet-shaped molding material 2 is about 3 to 5 mm, the molding material 2 including the attached motor and the pressing roller 5A having its own weight of 100 kg or more is lowered from a certain height. Crushing can be achieved. Since the upstream pressing roller 5A is rotating, the roughly crushed molding material 2 is sent to the downstream side by the side surface 7A of the protruding strip 6A included in the upstream pressing roller 5A.

  Next, the molding material 2 that has been placed on the conveyor 3 and moved below the downstream pressing roller 5B is roughly crushed between the downstream pressing roller 5A and the conveyor 3. Since the downstream pressing roller 5B is rotating, the molding material 2 roughly crushed by the side surface 7B of the protrusion 6B included in the downstream pressing roller 5B is sent to the downstream crusher 8 and supplied. .

  Here, the raising / lowering operation | movement of the pressing roller 5A in the molding material supply apparatus 1 of this embodiment is described (the raising / lowering operation of the pressing roller 5B is also the same). The raising and lowering of the push roller 5A is made to be able to move up and down by moving the piston of the air cylinder 15A as the lifting means up and down the bearing portion 14A that supports the shaft 13A based on a control signal from a control unit (not shown). . The height of the shaft 13A when the pushing roller 5A is raised is controlled by the operation of the air cylinder 15A, and the height of the shaft 13A when the pushing roller 5A is lowered is also controlled by the operation of the air cylinder 15A. The load applied when descending is absorbed by the load absorbing portion 22A provided in the air cylinder 15A. When the pushing roller 5A is moved up and down, the pair of upper and lower guide rollers 19 attached to the bearing portion 14A and the guide rails 20 provided on the pair of guide columns 21 are rotatably engaged to guide the lifting operation. . At this time, since the elevating guide member attached to the bearing portion 14A and the pushing roller 5A is supported in the form of both ends, troubles such as breakage of the elevating guide member due to the load are effectively prevented.

It is a side view of the raising / lowering guide mechanism of one pushing roller in the supply apparatus of one Embodiment of this invention. It is a schematic sectional drawing for demonstrating the supply apparatus of one Embodiment of this invention. It is a schematic plan view of an apparatus same as the above. It is a side view of the mechanism which supports and raises / lowers the pushing roller. It is a top view of the bearing part of one pushing roller. It is a schematic sectional drawing for demonstrating the supply apparatus of a prior art example. It is a schematic plan view of an apparatus same as the above. It is a schematic sectional drawing for demonstrating the supply apparatus proposed previously. It is a schematic plan view of an apparatus same as the above. It is explanatory drawing of the raising / lowering guide mechanism of the pushing roller in an apparatus same as the above. It is explanatory drawing of the raising / lowering guide mechanism in an apparatus same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Supply apparatus 2 Molding material 3 Conveyor 4 Crusher side edge 5A, 5B Push roller 6A, 6B Projection piece 7A, 7B Side surface 8 Crusher 9 Rotating blade 10 Fixed blade 11 Transition plate 12 Cover 13A, 13B Axis 14A, 14B Bearing portion 15A, 15B Air cylinder 16 Side surface 17 Plate-like portion 18 Guide roller support portion 19 Guide roller 20 Guide rail 21 Guide column 22A, 22B Load absorption portion 23 Base

Claims (3)

It is arranged above the conveying conveyor for conveying the molding material to be crushed and the crusher side end of the conveying conveyor so that its axial direction is orthogonal to the conveying direction of the conveying conveyor, and it is rotatable and can be raised and lowered. Equipped with an indentation roller, and by raising and lowering the rotation of the indentation roller, the molding material being conveyed by the conveyor is roughly crushed between the indentation roller and the conveyor, and the crushed molding material is transferred to the crusher. A device for supplying a molding material to a crusher to be supplied, which includes a bearing portion that rotatably supports a shaft of a pressing roller, a height adjusting unit that adjusts a height position of the pressing roller via the bearing portion, and a pressing Elevating and lowering guiding means for guiding the raising and lowering of the pressing roller when raising and lowering the roller is provided, the height adjusting means is a load absorption type air cylinder, and the raising and lowering guiding means is a bearing. At least a pair of guide rollers provided on both sides of the roller and a support stand that supports the pushing roller are provided separately from each other so as to freely engage with at least a pair of guide rollers provided on the bearing portion. Ri Na of a pair of guide posts with guide rails, a pair of the guide rollers toward the outside from the pair of plate-like portion that protrudes toward the pushing roller side the push roller side face of the bearing portion feeder of the molding material of the Rukoto the tip of the pair of guide roller support portion attached respectively to the upper and lower are rotatably mounted respectively supported to the crusher, characterized.   The apparatus for supplying a molding material to a crusher according to claim 1, wherein two pressing rollers are provided above the conveyor.   The pressing roller is a polygon having a cross-sectional shape of an octagon or more, and is provided with a metal protrusion piece parallel to the axial direction of the pressing roller at each corner of the polygon. Or the supply apparatus of the molding material to the crusher of 2.