JP2012035423A - Surface material separator, surface material separation system, and surface material separation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface material separator which can collect high-purity resin foam when only a resin foam part is collected from a resin foam with a flexible surface material, a surface material separation system, and a surface material separation method.SOLUTION: The surface material separator 2 which separates the resin foam A with the flexible surface material into the flexible surface material B and the resin foam C has a first rotary shaft 13 and a second rotary shaft 17 which are arranged nearly in parallel, a first pressing part P1 having a plurality of first pressing surfaces Q1 which are installed circumferentially in the first rotary shaft 13 and apply pressure to the resin foam with the flexible surface material supplied between the first rotary shaft 13 and the second rotary shaft 17 with the rotation of the first rotary shaft 13, and a second pressing part P2 having a plurality of second pressing surfaces Q2 which are installed circumferentially in the second rotary shaft 17 and apply pressure to the resin foam A with the flexible surface material supplied between the first rotary shaft 13 and the second rotary shaft 17 with the rotation of the second rotary shaft 17.

Description

  The present invention relates to a face material separating device, a face material separating system, and a face material separating method for separating a resin foam with a flexible face material into a flexible face material and a resin foam.

  The resin foam with flexible face material such as phenol resin foam and urethane foam has a structure in which the face material is directly bonded to both surfaces of the resin foam as the core material as the skin material. In general, when collecting the resin foam part for recycling, or processing the waste material, only the resin foam such as phenol resin foam, urethane foam as the core material can be efficiently recovered, A technique for separating the flexible face material and the resin foam is required.

  When collecting resin foam and performing material recycling, if a face material is mixed into the resin foam, it will be applied to a small amount of face material (especially small pieces and fibers of the face material) mixed in various equipment and piping retention parts in the manufacturing process. There is concern that clogging will occur, and it is desirable to reduce the mixing of face materials as much as possible from the viewpoint of facility management.

  The devices described in Patent Documents 1 and 2 are known as devices that can be used for separating such a resin foam with a flexible face material.

JP 2001-149806 A JP 11-48246 A

  For example, when a flexible face material and a resin foam are separated using a biaxial crusher disclosed in Japanese Patent Application Laid-Open No. 2001-149806, the flexible face material is also torn finely simultaneously with the crushing of the resin foam. Therefore, small pieces or fibers of the flexible face material are mixed with the resin foam, and it is not easy to collect the resin foam with high purity. Further, when separating using the rotating ball mill shown in JP-A-11-48246, it is difficult to completely control the long-term residence of the flexible face material in the apparatus due to the structure of the rotating ball mill, If the residence time is too long, the flexible face material may be damaged, and fibers of the flexible face material may be mixed into the resin foam.

  The present invention aims to solve the above-mentioned problems, and recovers a high-purity resin foam when recovering only the resin foam part from an amorphous resin foam with a flexible face material. It is an object to provide a face material separating apparatus, a face material separating system, and a face material separating method.

  As a result of intensive studies in order to solve the above-mentioned problems of the prior art, the present inventors have determined that the resin foam portion from the resin foam with the flexible face material does not damage the flexible face material. As a result, the inventors have found a technique for separating the components and have made the present invention.

  That is, the present invention is a face material separating device for separating a resin foam with a flexible face material into a flexible face material and a resin foam, the first rotating shaft and the first A plurality of rotating shafts in the circumferential direction of the first rotating shaft, and a flexible surface inserted between the first rotating shaft and the second rotating shaft as the first rotating shaft rotates. A plurality of first pressing portions having a first pressing surface for applying a pressing force to the resin foam with a material and a circumferential direction of the second rotating shaft, and the first rotating shaft rotates in accordance with the rotation of the second rotating shaft. And a second pressing portion having a second pressing surface for applying a pressing force to the resin foam with flexible face material introduced between the rotating shaft and the second rotating shaft, and the first rotating shaft And the second rotating shaft rotates so as to draw the resin foam with a flexible face material in a predetermined direction in a state where the first pressing portion and the second pressing portion are not in contact with each other. The surface extends along the axial direction of the first rotating shaft, and the second pressing surface extends along the axial direction of the second rotating shaft, and the first pressing surface and the second pressing surface The surface cooperates with the flexible face material by bending and deforming the resin foam with the flexible face material and crushing the resin foam inside the resin foam with the flexible face material. It is characterized by separating the resin foam.

  In the face material separating device according to the present invention, the first rotating shaft and the second rotating shaft are a resin foam with a flexible face material in a state where the first pressing portion and the second pressing portion are not in contact with each other. Rotate to pull in a predetermined direction. At this time, the first pressing surface provided in the first pressing portion and the second pressing surface provided in the second pressing portion do not contact each other, but cooperate with each other to mainly be a flexible surface. The resin foam with the material is bent and deformed. Here, since the first pressing surface extends along the axial direction of the first rotating shaft and the second pressing surface extends along the axial direction of the second rotating shaft, the first pressing surface The surface and the second pressing surface do not cross each other, but rather move so as to overlap to bend the resin foam with flexible face material. Therefore, according to the present invention, since the pressing force for bending by surface contact is mainly applied to crush the resin foam inside the resin foam with the flexible face material, the conventional biaxial crusher Unlike the above, it is possible to avoid applying an excessive shearing force to the flexible face material. In addition, since the separation of the flexible face material and the resin foam can be realized simply by passing the resin foam with the flexible face material between the two rotational shafts that are rotationally driven, a device such as a conventional rotating ball mill is provided. As compared with, it is easy to control the force applied to the resin foam with flexible face material. For this reason, it is easy to control the force so as not to damage the flexible face material while crushing the resin foam. Therefore, according to the face material separating device according to the present invention, the flexible foam is separated from the resin foam with the flexible face material so as not to damage the flexible face material. Therefore, it is possible to avoid mixing small pieces, fibers, and the like into the resin foam, so that a high-purity resin foam can be recovered.

The face material separating apparatus according to the present invention further includes a hopper having a charging port for charging the resin foam with flexible face material between the first rotating shaft and the second rotating shaft. In the extending direction of the rotating shaft, the width of the inlet is preferably narrower than the width of the first pressing portion and the second pressing portion.
According to the face material separating device according to the present invention, it is possible to prevent the resin foam with a flexible face material that has been thrown into the charging port from falling to a place that is out of the first and second pressing portions. The resin foam with the flexible face material can be prevented from staying in the apparatus without being drawn between the first and second rotating shafts by the first and second pressing portions. This contributes to high purity of the resin in the face material separating apparatus.

In the face material separating device according to the present invention, the first pressing portion has a first plate-like member provided to project radially from the first rotating shaft, and the second pressing portion includes It is preferable to have the 2nd plate-shaped member provided protruding from the rotating shaft of 2 to radial direction.
According to the face material separating apparatus according to the present invention, since the distance from the rotation shaft to the tip of the pressing portion is increased by using the plate-like member, the first and second pressing portions are flexible face materials by rotation. The range in which the attached resin foam can be wound and drawn between the first and second rotating shafts can be expanded. Such a configuration is effective in separating a relatively large resin foam with a flexible face material.

In the face material separation device according to the present invention, the first pressing portion includes a first bar-shaped member arranged so as to extend along the axial direction of the first rotating shaft, and the second pressing portion. It is preferable that the part has a second rod-shaped member arranged so as to extend along the axial direction of the second rotation shaft.
According to the face material separating apparatus according to the present invention, since the pressing portion can be formed at a relatively short interval on the outer periphery of the rotating shaft by forming the pressing surface with the rod-shaped member, the resin foam with flexible face material, A plurality of bending deformations can be applied by pressing the first and second pressing portions at a short interval against the resin foam, and the resin foam can be efficiently crushed. Such a configuration is effective when the resin foam is finely crushed.

In the face material separating device according to the present invention, it is preferable that the first pressing surface and the second pressing surface have curved surfaces.
According to the face material separating device according to the present invention, the friction generated between the first pressing surface and the second pressing surface and the flexible face material can be reduced, so that the flexible face material is damaged. It is possible to reduce the possibility of occurrence. This contributes to high purity of the resin foam separated and recovered.

In the face material separating apparatus according to the present invention, the face material separating apparatus may further include a suction means for sucking the resin foam with the flexible face material, which is put between the first rotating shaft and the second rotating shaft, in a predetermined direction. preferable.
According to the face material separation device of the present invention, the resin foam with a flexible face material is pulled in a predetermined direction in which the resin foam with the flexible face material is drawn by the rotation of the first rotation shaft and the second rotation shaft. Therefore, the resin foam with a flexible face material can be prevented from staying in the apparatus. Furthermore, since the separated flexible face material and the resin foam are sucked in a predetermined direction and removed from between the first and second rotating shafts, the purity of the resin can be increased.

A face material separation system according to the present invention includes the face material separation device described above, and a separation device that separates the flexible face material and the resin foam separated by the face material separation device. .
According to the face material separation system according to the present invention, the flexible face material and the resin foam can be separated without damaging the flexible face material by the above-described face material separating device. High-purity resin foam can be easily separated and collected without generating small pieces or fibers of the surface material.

  The present invention is a face material separating method for separating a resin foam with a flexible face material into a flexible face material and a resin foam using the face material separating device described above, and the first rotating shaft In addition, the cooperation of the first pressing surface and the second pressing surface by the rotation of the second rotation shaft draws the resin foam with the flexible face material in a predetermined direction, and after the drawing step, the flexible A separation step of separating the flexible face material and the resin foam by bending and deforming the resin foam with the flexible face material and crushing the resin foam inside the resin foam with the flexible face material And a feeding step of feeding out the flexible face material and the resin foam separated in a predetermined direction.

  According to the face material separating method according to the present invention, the resin foam with a flexible face material is bent and deformed by the cooperation of the first pressing surface and the second pressing surface, so that the conventional biaxial crusher Unlike the case of using, the resin foam with a flexible face material is pressed in a state of surface contact rather than point contact or line contact, and it is possible to avoid applying an excessive shearing force to the flexible face material. Moreover, since the 1st press part and the 2nd press part are extended along the axial direction of each rotating shaft, and each rotating shaft is rotating so that it may become the same peripheral speed, 2 of the past. Generation | occurrence | production of the shearing force by pinching | interposing the resin foam with a flexible face material in the rotation direction of a blade like an axial crusher can be avoided. Moreover, since the resin foam with the flexible face material can be separated only once between the two rotationally driven rotating shafts, the flexible face material and the resin foam can be separated. Compared with the case of using, it is easy to control the force applied to the resin foam with a flexible face material. For this reason, it is easy to control the force so as not to damage the flexible face material while crushing the resin foam. Therefore, according to the face material separating method according to the present invention, when the flexible face material and the resin foam are separated, the flexible face material is damaged, and the pieces of the flexible face material, fibers, etc. Since it can avoid mixing in a resin foam, a highly purified resin foam can be collect | recovered.

In the face material separation method according to the present invention, the resin foam with the flexible face material is applied by the impact force applied to the resin foam with the flexible face material by the first pressing surface or the second pressing surface rotating in the separation step. It is preferable to crush the resin foam inside the body.
According to the face material separation method according to the present invention, the resin foam is crushed by the impact force applied by the rotating first pressing surface or the second pressing surface colliding with the resin foam with the flexible face material (resin Impact crushing of the foam and interfacial breakage between the flexible face material and the resin foam) can be caused, so that the flexible face material can be efficiently separated together with crushing due to bending deformation. In addition, since the internal resin foam can be crushed without applying excessive shearing force to the flexible face material, the high-purity resin foam can be recovered, which is advantageous for increasing the purity of the resin.

In the face material separation method according to the present invention, in the separation step, a resin foam with a flexible face material between the first pressing surface and the second rotating shaft or between the second pressing surface and the first rotating shaft. It is preferable to crush the resin foam inside the resin foam with a flexible face material by applying a compressive force to the body.
According to the face material separation method according to the present invention, the resin foam is crushed by applying a compressive force to the resin foam with the flexible face material. The face material can be separated. In addition, since the internal resin foam can be crushed without applying excessive shearing force to the flexible face material, the high-purity resin foam can be recovered, which is advantageous for increasing the purity of the resin.

In the face material separation method according to the present invention, it is preferable to suck the resin foam with a flexible face material drawn in the drawing step in a predetermined direction.
According to the face material separating method according to the present invention, the resin foam with a flexible face material is pulled in a predetermined direction in which the resin foam with the flexible face material is drawn by the rotation of the first rotation shaft and the second rotation shaft. Therefore, the resin foam with a flexible face material can be prevented from staying in the apparatus. Furthermore, since the separated flexible face material and the resin foam are sucked in a predetermined direction and removed from between the first and second rotating shafts, the purity of the resin can be increased.

In the face material separation method according to the present invention, it is preferable to further include a volume reduction step for reducing the volume of the resin foam with a flexible face material before the drawing step.
According to the face material separating method according to the present invention, the volume of the resin foam with the flexible face material is reduced in advance, so that the structure of the resin foam is easily broken and easily crushed. Can be separated.

  According to the present invention, a high-purity resin foam can be recovered by separating the resin foam from the resin foam with a flexible face material so as not to damage the flexible face material.

It is a schematic structure figure showing a face material separation system concerning a 1st embodiment. It is a schematic sectional drawing which shows the face material separator which concerns on 1st Embodiment. It is sectional drawing along the III-III line of FIG. It is a figure for demonstrating isolation | separation of the face material by a blade | wing type | mold face material separation unit. It is a schematic sectional drawing which shows the face material separator which concerns on 2nd Embodiment. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5. It is a figure for demonstrating isolation | separation of the face material by a protrusion-type face material separation unit.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same or an equivalent part, and the overlapping description is abbreviate | omitted. In addition, dimensions, shapes, and magnitude relationships between components in each drawing are not necessarily the same as actual ones.

[First Embodiment]
As shown in FIG. 1, a face material separation system 1 according to the first embodiment separates a resin foam A with a flexible face material into a flexible face material B and a resin foam C. There is a face material separating device 2, a separating material accumulating unit 3, a suction device 4, and a sieving device 5.

  The resin foam A with a flexible face material in the present invention has a structure in which a flexible face material B is directly bonded to both surfaces of a resin foam C as a core material as a skin material. Examples of the resin foam C include a phenol resin foam, a hard urethane foam, and a polystyrene foam. In particular, a phenol resin foam is preferable. As the flexible face material B, a fiber-based flexible face material is used.

  Specifically, the flexible face material B is made of a resin-made non-woven fabric and woven fabric mainly composed of polyester, polypropylene, nylon or the like, or a glass fiber non-woven fabric, or calcium hydroxide paper, aluminum hydroxide paper, silicic acid. It is composed of paper made of inorganic substances such as magnesium paper and paper quality such as kraft paper. Such a flexible face material B is usually provided in the form of a roll. In particular, polyester surface material, polypropylene surface material, nylon surface material, glass fiber surface material, and paper surface material, the difference in fracture characteristics of the two materials of the resin foam C and the flexible surface material B from the viewpoint of economy. It is preferable to separate the resin foam C and the flexible face material B by using. Furthermore, in addition to these main components, a kneaded additive such as a flame retardant may be used. The bonding method between the flexible face material B of the resin foam A with the flexible face material and the resin foam C as the core material is not particularly limited, and the resin foam C as the core material is not limited. You may use the thing by self-adhesion force at the time of thermosetting on the face material surface, or what used adhesives, such as an epoxy resin.

  In addition, if the magnitude | size of the resin foam A with a flexible face material isolate | separated by this embodiment is a magnitude | size which can be thrown into the face material separation apparatus 2, it will not restrict | limit in particular. Moreover, the shape is not particularly limited, and a large one may be broken in advance. Furthermore, the resin foam A with a flexible face material is generally a waste material such as a defective product, a scrap material, a used recovered product, etc. generated in a factory. The waste material of the resin foam A with a flexible face material is In many cases, the density is low, and a vast storage space is required. Therefore, the volume separation process may be performed in advance after the volume reduction process in the thickness direction. Since the cell structure of the resin foam is destroyed and easily crushed by performing volume reduction treatment, it is preferable to perform separation after volume reduction treatment in advance in order to perform more efficient separation. .

  The face material separating apparatus 2 is an apparatus that separates the resin foam A with a flexible face material into a flexible face material B and a resin foam C. The face material separating apparatus 2 is capable of bending and deforming the input resin foam A with a flexible face material to crush only the internal resin foam C without damaging the flexible face material B. The flexible face material B and the resin foam C are separated.

  The separating material accumulating section 3 has an accumulating chamber 3a and a basket-shaped receiving container 3b. The accumulation chamber 3a communicates with the face material separation device 2 and the suction device 4 through a pipe. The flexible face material B and the resin foam C discharged from the face material separating device 2 enter the accumulation chamber 3a through the piping and are accumulated in the receiving container 3b in the accumulation chamber 3a. A plurality of air holes are provided in the bottom of the receiving container 3b, and these air holes communicate with the suction device 4 through a pipe.

  The suction device 4 is a device that sucks air in the accumulation chamber 3a. The suction device 4 sucks air in the accumulation chamber 3a through an air hole provided in the bottom of the receiving container 3b. Thereby, the flexible face material B and the resin foam C discharged from the face material separating device 2 are sucked to the bottom of the receiving container 3b without being diffused. The suction device 4 also sucks air in the face material separation device 2 through the accumulation chamber 3a. Due to the suction force of the suction device 4, an air flow is generated in the face material separating device 2 to suck the resin foam A with a flexible face material in a predetermined processing direction F. The suction device 4 corresponds to the suction means described in the claims.

  The sieving device 5 is a device for sieving the flexible face material B and the resin foam C. As the sieving device 5, various types such as a vibration type and an air flow type are used. By putting the flexible face material B and the resin foam C accumulated in the receiving container 3b into the sieving apparatus 5, the flexible face material B and the resin foam C are accurately separated. The specifications such as the opening of the sieve used in the sieving device 5 may be selected according to the purpose, but in order to collect the high-purity resin foam C and the flexible face material B, the opening of the opening It is preferable to use a small one. The sieving device 5 corresponds to the sorting device described in the claims.

  Hereinafter, the face material separating apparatus 2 will be described in detail with reference to the drawings.

  As shown in FIGS. 2 and 3, the face material separating apparatus 2 includes a hopper 6 into which a resin foam A with a flexible face material is charged, and a resin foam A with a flexible face material within the hopper 6. Are provided with a blade-type face material separating unit 7 and a motor 8 for rotationally driving the blade-type face material separating unit 7. The face material separating apparatus 2 includes two blade-type face material separating units 7.

  The hopper 6 has a substantially funnel shape with its top and bottom open. The hopper 6 has a loading port 6a for loading the resin foam A with a flexible face material, and a discharge port 6b for discharging the separated flexible face material B and the resin foam C. is doing. The input port 6a and the discharge port 6b are formed in a rectangular shape. The hopper 6 has a flange portion 6 c for attaching the blade-type face material separating unit 7 to the hopper 6. The hopper 6 is provided with two blade-type face material separation units 7 stacked one above the other. Further, an inward flange portion 6 d is provided between the two blade-type face material separation units 7. The inward flange portion 6d is formed so that the flexible face material B and the resin foam C separated by the upper blade type face material separating unit 7 are located in the gap between the lower blade type face material separating unit 7 and the inner wall of the hopper 6. Prevent entry.

  The blade-type face material separating unit 7 is a unit for separating the resin foam A with a flexible face material, and is detachably attached to the hopper 6. The blade-type face material separation unit 7 includes a wall portion 10, a first blade rotating body 11, and a second blade rotating body 12. The wall portion 10 is provided so as to surround the sides of the first blade rotating body 11 and the second blade rotating body 12 arranged in parallel. The wall portion 10 has a plurality of flange portions 10 a corresponding to the flange portions 6 c of the hopper 6 in the vertical direction. The wall portion 10 is fixed to the hopper 6 by connecting the flange portion 10a and the flange portion 6c with bolts or the like. The two blade-type face material separating units 7 stacked one above the other are fixed by connecting the flange portions 10a with bolts or the like. Moreover, the wall part 10 is supporting the 1st blade | wing rotary body 11 and the 2nd blade | wing rotary body 12 via the bearing part 10b.

  The first blade rotating body 11 includes a first rotating shaft 13, a first rod support plate 14, a first rod portion 15, and a first blade plate 16. The first rotating shaft 13 rotates in the direction of arrow M by driving the motor 8. The first rotating shaft 13 and the motor 8 are connected via a connecting portion 9. The connecting part 9 switches the first rotating shaft 13 and the motor 8 between a connected state and a disconnected state. The first rotating shaft 13 corresponds to the first rotating shaft described in the claims.

  The first rod support plate 14 is a substantially cross-shaped member centered on the first rotation shaft 13. The first rod support plate 14 includes four arm portions so as to protrude in the radial direction of the first rotating shaft 13. Two first rod support plates 14 are provided and face each other in the axial direction of the first rotating shaft 13. The two first rod support plates 14 support the four first rod portions 15 by being sandwiched in the axial direction of the first rotating shaft 13. The four first rod portions 15 are respectively fixed to the tip portions of the four arms of the first rod support plate 14. The four first rod portions 15 are round bar-shaped members having curved surfaces. The four first rod portions 15 are arranged so as to extend along the axial direction of the first rotation shaft 13.

  Four first blades 16 are provided between the four first rod portions 15 and the first rotating shaft 13, respectively. The first blade plate 16 is a flat plate-like member extending along the axial direction of the first rotation shaft 13. The first blade plate 16 is fixed to the first rotating shaft 13. The first blade plate 16 is provided so as to protrude in the radial direction of the first rotating shaft 13. The first blade plate 16 is provided so as to fill a space surrounded by the first rod portion 15, the first rotating shaft 13, and the first rod support plate 14. The first blade 16 corresponds to the first plate-like member described in the claims.

  By providing the first blade plate 16 as described above, when separating the flexible face material B and the resin foam C of the resin foam A with the flexible face material, the first rotating shaft 13 and Prevents the flexible face material B and the resin foam C from being clogged between the first rod portions 15, or prevents the flexible face material B from being entangled with the first rod portion 15 and the first rotating shaft 13. can do. In the present invention, the first vane plate 16 is not necessarily provided, and a space may be provided between the first rotating shaft 13 and the first rod portion 15. Further, the first blade plate 16 does not need to completely fill the space between the first rod portion 15, the first rotating shaft 13, and the first rod support plate 14, and the flexible face material B Or a gap or hole that does not allow the resin foam C to enter. The first blade 16 is not limited to a flat plate as long as it is plate-shaped. Further, the thickness of the first blade plate 16 need not match that of the first rod portion 15.

  The 1st rod part 15 and the 1st slat | blade 16 comprise the 1st press part P1. The first pressing portion P <b> 1 is configured in a blade shape in the circumferential direction of the first rotating shaft 13. The first pressing portion P <b> 1 extends along the axial direction of the first rotating shaft 13. Four first pressing portions P1 are provided at equal intervals in the circumferential direction of the first rotating shaft 13. Further, the first pressing portion P <b> 1 is configured such that the width V in the axial direction of the first rotating shaft 13 is wider than the width T of the insertion port 6 a of the hopper 6. In other words, the width T of the inlet 6a of the hopper 6 is formed to be narrower than the width V of the first pressing portion P1.

  The first pressing portion P <b> 1 rotates in the arrow M direction with the rotation of the first rotation shaft 13. The first pressing portion P1 is a resin foam A with a flexible face material that is introduced between the first blade rotating body 11 and the second blade rotating body 12 as the first rotating shaft 13 rotates. 1 has a first pressing surface Q1 that applies a pressing force (impact force) (see FIG. 4). The first pressing surface Q <b> 1 corresponds to the outer surface of the first rod portion 15 and the first blade plate 16, and extends along the axial direction of the first rotating shaft 13. The first pressing surface Q1 is a smooth surface having a low friction coefficient. The first pressing surface Q1 includes a curved surface formed by the round rod-shaped first rod portion 15. The first pressing portion P1 and the first pressing surface Q1 respectively correspond to the first pressing portion and the first pressing surface described in the claims.

  The first blade rotating body 11 and the second blade rotating body 12 have the same structure. The second blade rotating body 12 includes a second rotating shaft 17, a second rod support plate 18, a second rod portion 19, and a second blade plate 20. The second rotation shaft 17 is disposed substantially parallel to the first rotation shaft 13. The second rotating shaft 17 rotates in the direction of arrow N by driving the motor 8. The second rotating shaft 17 and the first rotating shaft 13 draw the resin foam A with a flexible face material introduced therebetween in a predetermined processing direction F (direction toward the discharge port 6b). Rotate. The second rotating shaft 17 and the motor 8 are also connected via the connecting portion 9. The second rotating shaft 17 corresponds to the second rotating shaft described in the claims.

  The second rod support plate 18 is a substantially cross-shaped member centered on the second rotation shaft 17. Two second rod support plates 18 are provided and face each other in the axial direction of the second rotating shaft 17. The two second rod support plates 18 support the four second rod portions 19 by being sandwiched in the axial direction of the second rotating shaft 17. Further, four second blades 20 are provided between the four second rod portions 19 and the second rotating shaft 17, respectively. The second blade 20 corresponds to the second plate-like member described in the claims.

  The 2nd rod part 19 and the 2nd blade board 20 comprise the 2nd press part P2. The second pressing portion P <b> 2 is configured in a blade shape in the circumferential direction of the second rotating shaft 17. The second pressing portion P <b> 2 extends along the axial direction of the second rotating shaft 17. Four second pressing portions P <b> 2 are provided at equal intervals in the circumferential direction of the second rotating shaft 17.

  The second pressing portion P <b> 2 rotates in the arrow N direction with the rotation of the second rotation shaft 17. The second pressing portion P2 and the first pressing portion P1 rotate so as to overlap in the processing direction F. The second pressing portion P1 is a resin foam A with a flexible face material that is introduced between the first blade rotating body 11 and the second blade rotating body 12 as the second rotating shaft 17 rotates. 2 has a second pressing surface Q2 that applies a pressing force (impact force) (see FIG. 4). The second pressing surface Q <b> 2 corresponds to the outer surface of the second rod portion 19 and the second blade plate 20, and extends along the axial direction of the second rotating shaft 17. The second pressing surface Q2 is a smooth surface having a low friction coefficient. The second pressing surface Q <b> 2 includes a curved surface of the surface of the round rod-shaped second rod portion 19. The second pressing portion P2 and the second pressing surface Q2 respectively correspond to the second pressing portion and the second pressing surface described in the claims.

The blade-type face material separating unit 7 is configured to be able to adjust the center distance L between the first rotating shaft 13 of the first blade rotating body 11 and the second rotating shaft 17 of the second blade rotating body 12. Has been. This center distance L is set in consideration of the rotation radius L1 of the first blade rotor 11, the rotation radius L2 of the second blade rotor 12, and the thickness t of the resin foam A with flexible face material. Is done. Specifically, it is set so as to satisfy the relationship of the following formula (1). Note that L1 corresponds to the length from the center of the first rotating shaft 13 to the tip of the blade-shaped first pressing portion P1. Similarly, L2 corresponds to the length from the center of the second rotating shaft 17 to the tip of the blade-like second pressing portion P2.

  Next, the separation / separation method of the face material separation system 1 according to the first embodiment described above will be described with reference to FIGS.

  In the separation / separation method of the present embodiment, first, a volume reduction process for reducing the capacity of the resin foam A with a flexible face material is performed. The volume reduction process is performed by compressing with a two-stage roll compressor, for example.

  Thereafter, in the face material separating device 2 of the face material separating system 1, a charging process is performed in which the resin foam A with a flexible face material is charged into the charging port 6 a of the hopper 6. In the charging process, the resin foam A with the flexible face material is supplied between the first blade rotating body 11 and the second blade rotating body 12 of the upper blade type face material separating unit 7 through the charging port 6a. The

  Next, the resin foam A with a flexible face material introduced by the cooperation of the first pressing surface Q1 and the second pressing surface Q2 due to the rotation of the first rotating shaft 13 and the second rotating shaft 17 is used. A drawing-in process for drawing in the processing direction F is performed. Further, the resin foam A with the flexible face material is sucked in the processing direction F by the suction device 4. Specifically, the suction device 4 creates an air flow that sucks the material in the hopper 6 in the processing direction F.

  After the pull-in process, the resin foam A with flexible face material is bent and deformed by the pressing force applied by the first pressing surface Q1 and the second pressing surface Q2, and the internal resin foam C is crushed. A separation step for separating the flexible face material B and the resin foam C is performed. In this separation step, the first pressing surface Q1 and the second pressing surface Q2 give a pressing force in a surface contact state, and an excessive shearing force is applied to the flexible surface material B that is a skin material. Is not added. Furthermore, since the flexible face material B is not affected by bending deformation due to flexibility, the flexible face material B is separated without causing damage.

  Thereafter, the flexible face material B and the resin foam C separated by the cooperation of the first pressing surface Q1 and the second pressing surface Q2 due to the rotation of the first rotating shaft 13 and the second rotating shaft 17. Is sent out in the processing direction F.

  The flexible face material B and the resin foam C sent out from the upper blade type face material separating unit 7 are the first blade rotating body 11 and the second blade rotating body of the lower blade type face material separating unit 7. Get in between the twelve. In the lower blade-type face material separating unit 7, a drawing process for drawing the flexible face material B and the resin foam C in the processing direction F is performed. Then, the re-crushing process which crushes the resin foam C again by bending deformation is performed. By this re-crushing process, the resin foam C is crushed to a desired size. After the re-crushing step, a feeding step for feeding the flexible face material B and the resin foam C in the processing direction F is performed.

  The flexible face material B and the resin foam C sent out in the processing direction F in the sending process are discharged from the discharge port 6b of the hopper 6 and put into the receiving container 3b provided in the collecting chamber 3a of the separating material collecting unit 3. Accumulated. The suction device 4 creates an air flow that sucks the flexible face material B and the resin foam C toward the bottom of the container 3b.

  Thereafter, the flexible face material B and the resin foam C accumulated in the receiving container 3 b are put into the sieving device 5. In the sieving device 5, a separation step of separating the flexible face material B and the resin foam C is performed. The resin foam A with a flexible face material is separated and separated into the flexible face material B and the resin foam C through the above steps.

  According to the face material separating device 2 of the face material separating system 1 according to the first embodiment described above, the first rotating shaft 13 and the second rotating shaft 17 are connected to the first pressing part P1 and the second rotating shaft. The resin foam A with the flexible face material is rotated so as to be drawn in a predetermined processing direction F in a state of non-contact with the pressing portion P2. At this time, the first pressing surface Q1 of the first pressing portion P1 and the second pressing surface Q2 of the second pressing portion P2 do not come into contact with each other, but cooperate with each other and the resin foam with flexible face material A is bent and deformed. Here, since the first pressing surface Q1 extends along the axial direction of the first rotating shaft 13 and the second pressing surface Q2 extends along the axial direction of the second rotating shaft 17, The first pressing surface and the second pressing surface do not cross each other, but rather move so as to overlap to bend the resin foam A with flexible face material. Therefore, according to this face material separating apparatus 2, since the pressing force for bending by the surface contact is mainly applied and the resin foam C inside the resin foam A with the flexible face material is crushed, Unlike the two-shaft crusher, it is possible to avoid applying an excessive shearing force to the flexible face material B.

  Moreover, the separation of the flexible face material B and the resin foam C can be realized simply by passing the resin foam A with the flexible face material between the two rotational shafts 13 and 17 that are rotationally driven. Compared with an apparatus such as a rotating ball mill, it is easy to control the force applied to the resin foam A with a flexible face material. For this reason, it is easy to control the force so as not to damage the flexible face material B while crushing the resin foam C. Therefore, according to this face material separating device 2, by separating the resin foam C from the resin foam A with the flexible face material so as not to damage the flexible face material B, the flexible surface Since small pieces or fibers of the material B can be avoided from being mixed into the resin foam C, the high-purity resin foam C can be recovered.

  Further details can be explained as follows. That is, when the resin foam A with a flexible face material is introduced into the face material separating device 2, the resin foam A with a flexible face material is formed by the first pressing surface Q1 or the second pressing surface Q2. The resin foam A with the flexible face material passes between the two rotary shafts 13 and 17 that are flipped up upstream or driven to rotate. A flexible surface (although it does not stay for a long time) in the space upstream of the first pressing surface Q1 and the second pressing surface Q2 including the first pressing surface Q1 or the second pressing surface Q2. When the resin foam A with a material is present, one of the resin foams C is caused by the impact force on the resin foam A with a flexible surface material by the rotating first pressing surface Q1 and the second pressing surface Q1. The part is pulverized (impact pulverization of the resin foam C and interface destruction between the flexible face material B and the resin foam C), and a part thereof is peeled off from the flexible face material B. Next, as a main process of separating the flexible foam material B and the resin foam C by crushing the resin foam C inside the flexible foam foam resin A, the two rotationally driven two When the resin foam A with flexible face material (or the resin foam C already peeled off by the impact force of the pressure surfaces Q1 and Q2) passes between the rotary shafts 13 and 17, the first pressure is applied. The surface Q1 and the second pressing surface Q2 cooperate to bend and deform the resin foam A with flexible face material, and crush the resin foam C inside the resin foam A with flexible face material by this bending force. (Impact pulverization of the resin foam C and interface destruction between the flexible face material and the resin foam C). In the case of the resin foam A with the flexible face material, the flexible face material is simultaneously used. B and the resin foam C can be separated. Further, the gap between the first pressing surface Q1 and the second rotating shaft 17, or the gap between the second pressing surface Q2 and the first rotating shaft 13, is the resin foam A with the flexible face material. When the size (thickness) or less is reached, a compressive force is applied to the resin foam C, and only the resin foam C inside the resin foam A with the flexible face material is crushed, so that the face material is almost damaged. The pulverization / separation efficiency of the flexible face material B and the resin foam C can be increased without any problem.

  Further, in the face material separating device 2, the first pressing portion P1 and the first pressing portion P2 collide with the resin foam A with the flexible face material by controlling the rotation speeds of the rotary shafts 13 and 17. The impact force can be adjusted. By destroying the structure of the resin foam C inside the resin foam A with the flexible face material by this impact force, the resin foam A with the flexible face material can be easily separated by bending deformation. Further, in this face material separating apparatus 2, the minimum gap between the first pressing part P1 and the first pressing part P2 is made smaller than the thickness t of the resin foam A with the flexible face material, thereby bending deformation. At the same time, compression deformation can be applied. Such a configuration is advantageous for improving the crushing efficiency of the resin foam C, that is, the separation efficiency.

  Further, in this face material separating device 2, the width T of the inlet 6a of the hopper 6 is narrower than the width V of the first pressing portion P1 and the second pressing portion P2 in the extending direction of the first rotating shaft. It is possible to prevent the resin foam A with a flexible face material introduced into the introduction port 6a from falling to a place where it has been removed from the first pressing part P1 and the second pressing part P2. Therefore, according to the face material separating device 2, the resin foam A with the flexible face material is not drawn between the two rotating shafts 13 and 17 by the first pressing portion P1 and the second pressing portion P2. It is possible to avoid staying in the hopper 6. This contributes to high purity of the resin of the face material separating device 2.

  Further, in the face material separating device 2, the first pressing portion P <b> 1 is configured by using the first blade plate 16 provided to project in the radial direction of the first rotating shaft 13, and the second rotating shaft 17. The second pressing portion P2 is configured by using the second blade plate 20 provided so as to protrude in the radial direction. For this reason, in this face material separating device 2, since the distance from each rotating shaft 13 and 17 to the tip of the 1st and 2nd press parts P1 and P2 becomes long, the 1st and 2nd press parts by rotation The range in which P1 and P2 can entrain the flexible foamed resin foam A and draw it between the rotary shafts 13 and 17 can be expanded. Such a configuration is effective when separating a relatively large resin foam A with a flexible face material.

  Further, in the face material separating device 2, the first pressing surface Q <b> 1 and the second pressing surface Q <b> 2 are configured including the curved surfaces of the surfaces of the round rod-shaped first rod portions 15 and 19. Thereby, since the friction which arises between the 1st press surface Q1 and the 2nd press surface Q2, and the flexible surface material B can be reduced, possibility that a damage will arise in the flexible surface material B is produced. Can be reduced. This contributes to high purity of the resin foam C to be separated and recovered.

  Further, in this face material separating device 2, since the resin foam A with the flexible face material in the hopper 6 can be sucked in the processing direction F by the suction device 4, the resin foam with the flexible face material It can be avoided that A stays in the hopper 6. Furthermore, since the separated flexible face material B and the resin foam C are sucked in the processing direction F and removed from between the first rotating shaft 13 and the second rotating shaft 17, the separation efficiency can be improved. Can do. Thus, by using the air flow and suctioning from the discharge port 6b, it is possible to efficiently collect dust and transport.

  In addition, by performing volume reduction processing to reduce the capacity of the resin foam A with the flexible face material in advance before being put into the face material separating device 2, the structure of the resin foam C is easily broken and easily crushed. Therefore, the flexible face material B can be separated efficiently. Moreover, since the capacity | capacitance of the resin foam A with a flexible face material reduces by volume reduction processing, space saving can be achieved regarding integration | stacking of the resin foam A with a flexible face material before isolation | separation.

  Further, in this face material separating apparatus 2, by configuring the blade-type face material separating unit 7 as a unit that can be attached to and detached from the hopper 6, various functions can be used depending on the situation, as described in the second embodiment. It becomes possible to exchange with other units having. This contributes to the improvement in versatility of the face material separating device 2. In addition, maintenance is easier than in the case where the blade-type face material separating unit 7 is configured integrally with the hopper 6.

  According to the face material separation system 1 according to the first embodiment, the above-described face material separation device 2 allows the flexible face material B and the resin without damaging the flexible face material B such as opening a hole. Since the foam C can be separated, the high-purity resin foam C can be easily separated and recovered without generating small pieces or fibers of the flexible face material B at the time of separation.

[Second Embodiment]
As shown in FIG. 5 and FIG. 6, the face material separating device 30 of the face material separating system according to the second embodiment has a blade-type face material separating unit 7 having two upper and lower stages as compared with the first embodiment. The only difference is that a protruding face material separating unit 31 is provided in place of the lower blade type face material separating unit 7.

  The protruding face material separating unit 31 is a unit that separates the resin foam A with a flexible face material. The protruding face material separating unit 31 is detachably attached to the hopper 6. The projecting surface member separation unit 31 includes a wall 32, a first projecting rotator 33, and a second projecting rotator 34. The wall 32 is provided so as to surround the sides of the first protrusion-type rotator 33 and the second protrusion-type rotator 34 arranged in parallel. The wall part 32 has a flange part 32 a corresponding to the flange part 6 c of the hopper 6 at the top and bottom. The wall portion 32 is fixed to the hopper 6 by connecting the flange portion 32a and the flange portion 6c with bolts or the like. The upper blade-type face material separating unit 7 and the lower projecting face material separating unit 31 are fixed by connecting the flange portion 10a and the flange portion 32a with bolts or the like.

  The wall 32 supports the first protrusion-type rotator 33 and the second protrusion-type rotator 34 via the bearing 32b. Specifically, the wall portion 32 rotatably supports the first rotation shaft 35 in the first protrusion-type rotator 33 and the second rotation shaft 37 in the second protrusion-type rotator 34. .

  The 1st protrusion type rotary body 33 has the 1st rotating shaft 35, the 1st roll body 36, and the 1st press part P3. The first rotating shaft 35 rotates in the direction of arrow M by driving the motor 8. The first rotating shaft 35 and the motor 8 are connected via a connecting portion 9. The connecting portion 9 switches the first rotating shaft 35 and the motor 8 from the connected state to the disconnected state when removing the protruding face member separating unit 31. The first rotating shaft 35 corresponds to the first rotating shaft described in the claims. The first roll body 36 is a columnar member provided with the first rotation shaft 35 as a central axis. The first roll body 36 rotates integrally with the first rotation shaft 35.

  The first pressing portion P <b> 3 is a round bar-shaped member extending along the axial direction of the first rotation shaft 35. Specifically, the first pressing portion P3 is a resin foam that is crushed in a gap between a round bar fixed to the outer periphery of the first roll body 36 and the outer circumference of the first roll body 36. In order to prevent C or the like from entering, the plate is provided on both sides of the round bar. The 1st press surface Q3 which is the surface of the 1st press part P3 is corresponded on the surface of a round bar and a board | plate material. The first pressing surface Q3 forms a smooth mountain-shaped curved surface. In addition, the 1st press part P3 is not limited to the said structure, What is necessary is just a round bar-shaped member extended along the axial direction of the 1st rotating shaft 35. FIG. This round bar shape is not limited to a circular cross section, and includes, for example, a cross section having a mountain shape. The first pressing portion P3 is configured such that the width V in the axial direction of the first rotating shaft 35 is wider than the width T of the inlet 6a of the hopper 6.

  Twelve first pressing portions P3 are provided at equal intervals in the circumferential direction of the first roll body 36. The first pressing portion P3 rotates in the arrow M direction along with the rotation of the first rotation shaft 35. The first pressing surface Q3 of the first pressing portion P3 can be inserted between the first protruding rotary body 33 and the second protruding rotary body 34 in accordance with the rotation of the first rotation shaft 35. A collision force is applied to the resin foam A with a flexible face material (see FIG. 7). The first pressing surface Q <b> 3 extends along the axial direction of the first rotation shaft 35. The first pressing surface Q3 is a smooth surface with a low friction coefficient. The first pressing portion P3 and the first pressing surface Q3 respectively correspond to the first pressing portion and the first pressing surface described in the claims. Moreover, the 1st press part P3 respond | corresponds to the 1st rod-shaped member as described in a claim.

  The first protrusion type rotating body 33 and the second protrusion type rotating body 34 have the same structure. The first protrusion-type rotator 33 and the second protrusion-type rotator 34 are not engaged with each other, and are interlocked while maintaining a non-contact state. The 2nd protrusion type rotary body 34 has the 2nd rotating shaft 37, the 2nd roll body 38, and the 2nd press part P4. The second rotating shaft 37 rotates in the direction of arrow N by driving the motor 8. The 2nd rotating shaft 37 and the 1st rotating shaft 35 rotate so that the resin foam A with a flexible face material thrown in between may be drawn in the predetermined process direction F. As shown in FIG. The second rotating shaft 37 and the motor 8 are also connected via the connecting portion 9. The second rotating shaft 37 corresponds to the second rotating shaft described in the claims. The second roll body 38 is a columnar member provided with the second rotation shaft 37 as a central axis. The second roll body 38 rotates integrally with the second rotation shaft 37.

  The second pressing portion P4 is a round bar-shaped member extending along the axial direction of the second rotating shaft 37. The second pressing part P4 has the same structure as the first pressing part P3. Twelve second pressing portions P4 are provided at equal intervals in the circumferential direction of the second roll body 38. The second pressing portion P <b> 4 rotates in the arrow N direction with the rotation of the second rotation shaft 37. The second pressing surface Q4, which is the surface of the second pressing portion P4, is inserted between the first protruding rotary body 33 and the second protruding rotary body 34 as the second rotating shaft 35 rotates. The resin foam A with the flexible face material is collided and a pressing force (impact force) is applied (see FIG. 7). The second pressing surface Q <b> 4 extends along the axial direction of the second rotation shaft 37. The second pressing surface Q4 is a smooth surface having a low friction coefficient. The second pressing portion P4 and the second pressing surface Q4 respectively correspond to the second pressing portion and the second pressing surface described in the claims. Moreover, the 2nd press part P4 respond | corresponds to the 2nd rod-shaped member as described in a claim.

Further, the protrusion-type face material separation unit 31 can adjust the center distance G between the first rotation shaft 35 in the first protrusion-type rotating body 33 and the second rotation shaft 37 in the second protrusion-type rotating body 34. It is configured. The center distance G takes into consideration the rotation radius G1 of the first protrusion-type rotator 33, the rotation radius G2 of the second protrusion-type rotator 34, and the thickness t of the resin foam A with flexible face material. Is set. Specifically, it is set so as to satisfy the relationship of the following formula (2).

  Next, a separation method using the protruding face material separation unit 31 will be described. As shown in FIG. 7, in the protrusion-type face material separation unit 31, first, the first pressing surface Q3 and the second pressing surface Q4 cooperate by the rotation of the first rotating shaft 35 and the second rotating shaft 37. Then, a drawing-in step of drawing the resin foam A with the flexible face material in the processing direction F is performed. Thereafter, the resin foam A with a flexible face material is bent and deformed by the pressing force applied by the first pressing surface Q3 and the second pressing surface Q4, and the internal resin foam C is crushed so as to be flexible. A separation process for separating the material B and the resin foam C is performed. In this separation step, the first pressing surface Q3 and the second pressing surface Q4 give a pressing force in a surface contact state, and an excessive shearing force is applied to the flexible surface material B that is a skin material. Is not added. Furthermore, since the flexible face material B is not affected by bending deformation due to flexibility, the flexible face material B is separated without causing damage. Then, the flexible surface material B and the resin foam C separated by the cooperation of the first pressing surface Q3 and the second pressing surface Q4 due to the rotation of the first rotating shaft 35 and the second rotating shaft 37. Is sent out in the processing direction F.

  According to the face material separating apparatus 30 according to the second embodiment described above, the same effect as that of the face material separating apparatus 2 according to the first embodiment can be obtained. Further, in the protruding type face material separating unit 31, the first and second pressing portions P3 and P4 are formed of rod-shaped members, so that the pressing portions P3 and P4 are disposed at relatively short intervals on the outer periphery of the roll bodies 36 and 38. The first and second pressing portions P3 and P4 are pressed at a short interval against the resin foam A with flexible face material and the resin foam C after separation, and a plurality of bending deformations are applied. And the resin foam C can be efficiently crushed. Such a configuration is effective when the resin foam C is finely crushed.

  The present invention is not limited to the embodiment described above.

  For example, the face material separating devices 2 and 30 may be configured to include only one stage of the blade-type surface material separation unit 7 and the protruding surface material separation unit 31, or may include three or more stages. Further, each of the pressing portions P1 to P4 may be of a deformed shape such as a kamaboko shape, a quadrangular prism, a triangular prism, etc., as long as the corners are sufficient. In the case of a cylindrical shape, it is a size that does not cut the face material, and is preferably 5 to 50 mm in diameter and more preferably 20 to 30 mm in order to give a bending force locally. The number of pressing parts P1 to P4 is preferably 2 to 24 and more preferably 4 to 8 in order to effectively give a bending force. Although it is preferable that the number of rotations is high, it is preferably 500 to 2500 rpm and more preferably 800 to 1500 rpm in order to obtain an impact force that does not damage the face material. The material of each pressing part P1-P4 can be arbitrarily selected according to the objective and use of the collect | recovered resin foam. It is desirable that the pressing surfaces Q1 to Q4 of the pressing portions P1 to P4 have no sharp parts and no corners so as not to damage the face material as much as possible when the face material is separated.

  Moreover, the length of the arm part of the 1st rod support plates 14 and 18 in 1st Embodiment can be arbitrarily set for every rotating shaft 13 and 17. FIG. Moreover, even if it is the same rotating shaft, when there are a plurality of pressing portions, the length of the arm portion can be arbitrarily set for each pressing portion, and they are not necessarily the same length as long as there is no structural problem. There is no need to be.

  Further, the structure of the hopper 6 on the side of the insertion port 6a is not limited, but in consideration of the presence of the resin foam A with a flexible face material rebounded to the side of the insertion port 6a by the pressing portions P1, P2, the flexible surface It is preferable to adopt a structure (for example, a chamber-like structure) in which the resin foam A with a material can stay to some extent on the inlet 6a side. Further, it is not always necessary to use a hopper as the outer frame of the apparatus.

  Hereinafter, the face material separating apparatus and the face material separating method according to the present invention will be described with reference to Examples and Comparative Examples.

  In the present invention, the separation means that the resin foam A with a flexible face material is divided into a flexible face material B and a resin foam C. Although it depends on the type of the face material, generally, the resin in the resin foam C enters between the fibers constituting the flexible face material B, that is, the resin is partially infiltrated into the flexible face material B. Therefore, complete recovery of the resin foam C is not easy.

The recovery rate of the resin foam C is defined in consideration of the resin component soaked in the flexible face material B. That is, the recovery rate of the resin foam C is calculated as follows. When measuring the recovery rate of the resin foam C, the evaluation was limited to a quadrilateral shape, and the recovery rate of the resin foam C was defined as follows. The size of the resin foam A with a flexible face material is such that the resin foam C and the flexible face material B are attached, and the one-side surface area of the flexible face material B is 900 mm 2 or more (both front and back surface areas). 1800 mm ² or more) and the short side is 30 mm or more, and the face material ratio is obtained in advance for a small amount of the resin foam C in a predetermined amount. That is, a sample of the resin foam A with the flexible face material is prepared separately from the processed product of the face material separation device of the resin foam A with the flexible face material, and a predetermined amount of the resin with the flexible face material is prepared. When the weight of the small piece of the foam A is W1 (g) and the weight of all the flexible face materials B carefully separated from the resin foam A with a spatula or the like is W2 (g), the face material ratio r is It is represented by the following formula (3). The flexible face material B separated from the resin foam C may have a resin penetrating and adhering to the inside of the flexible face material B.

と定義する。 Next, a sample of the resin foam A with a flexible face material is processed under a predetermined condition with a face material separating device, and the amount of the sieved product when the discharged product is sieved with a vibrating sieve having an opening of 10 mm is determined. Assuming that W3 (g) and the amount under sieve are W4 (g), the recovery rate R (% by weight) is represented by the following formula (4). W1 is equal to the sum of W3 and W4.

It is defined as

Subsequently, evaluation of the processed product will be described. With respect to the fiber mixing state of the flexible face material B, the following three stages of evaluation were performed, focusing on the treated flexible face material B as an index.
A: The fuzz of the face material is not visually recognized.
○: Although slight fuzzing of the face material can be confirmed, damage to the face material is small.
X: The fuzz of the face material can be confirmed, and the face material is greatly damaged.

  The density of the resin foam A with a flexible face material is a value obtained by removing the flexible face material B from the 20 cm square resin foam A with a flexible face material and measuring the weight and the apparent volume. , And measured according to JIS K 7222. In addition, the density of the resin foam A with a flexible face material is shown as an integer value by rounding off the decimal point of the value before volume reduction even when volume reduction treatment is performed.

  As the face material separating device, a combination of a plurality of stages of the blade-type face material separating unit 7 and the protruding face material separating unit 31 described above was used. As the blade-type face material separating unit 7, the first rotating shaft 13 and the second rotating shaft have shaft diameters of 70 mm, and the first rod portions 15 and 19 have a diameter of 30 mm, and the pressing portions P1 and P2 are used. And the minimum gap between the other rotating shafts 13 and 16 facing each other was 20 mm. As the protruding surface material separation unit 31, the shaft diameters of the first roll body 36 and the second roll body 38 are 140 mm, and the diameters of the round bars constituting the first pressing portion P3 and the second pressing portion P4 are the same. A 30 mm-thick one was used, and the minimum gap between the other rotating shafts 35 and 37 facing the pressing portions P3 and P4 was 5 mm.

Example 1
A phenol resin foam (made by Asahi Kasei Construction Materials Co., Ltd., Neomafoam [registered trademark], density 27 kg / m ³ ) having a thickness of 40 mm (910 × 1820 mm) using a polyester non-woven face material is rolled into a roll compressor (upper and lower rolls 2 The volume was reduced to a thickness of 10 to 20 mm by a step compression method, cut into a rectangular shape with a short side of 50 to 100 mm and a long side of 90 to 110 mm, and 150 g of that was put into the apparatus. In Example 1, a face material separator having four blade-type face material separation units 7 arranged in series was used. The rotation speed of the blade-type face material separation unit 7 was 1000 rpm. After separation by a face material separator, the material was sieved by a vibration sieve device having an opening of 10 mm.

(Example 2)
The same operation as in Example 1 was performed except that two blade-type face material separation units 7 were arranged in series only in the first and second stages from the upstream side.

(Example 3)
Three blade-type face material separation units 7 (the rotation speeds are both 1000 rpm) are arranged in series in the first to third stages from the upstream side, and the protrusion-type face material separation unit 31 (the rotation speed is 1500 rpm) in the fourth stage. The same procedure as in Example 1 was performed except that one was arranged.

Example 4
The blade-type face material separation unit 7 (the rotation speed is 1000 rpm) is arranged in the first and third stages from the upstream side, and the protrusion-type face material separation unit 31 (the rotation speed is both 1500 rpm) in the second and fourth stages from the upstream side. The same procedure as in Example 3 was performed, except that

(Example 5)
The blade-type face material separation unit 7 is arranged on the first, third, and fifth stages from the upstream side (the rotation speed is 1000 rpm), and the protrusion-type face material separation unit 31 is arranged on the second, fourth, and sixth stages from the upstream side. The same procedure as in Example 1 was performed except that both rotation speeds were 1500 rpm.

(Comparative Example 1)
It carried out similarly to Example 1 except having provided a right-angled corner | angular part at the front-end | tip of the 1st press part P1 and the 2nd press part P2 of the blade | wing type | mold face material separation unit 7 of all 1-4 stages from the upstream. .

(Comparative Example 2)
Four blade-type face material separation units 7 are arranged in series in the first to fourth stages from the upstream side (the number of rotations is all 1000 rpm), and the flexible surface after separation on the discharge port side of the blade-type face material separation unit 7 The same procedure as in Example 1 was performed except that a screen (φ10 mm hole) that would not be discharged unless the material B and the resin foam C were crushed to a certain size or less was installed.

Table 1 shows the characteristics and rotation conditions of the apparatuses used in Examples 1 to 5 and Comparative Examples 1 and 2.

Table 2 summarizes the evaluation results (recovery rate of the resin foam C and the fiber mixing state of the flexible face material B) of the processed products obtained in the above Examples and Comparative Examples.

  As shown in Table 2, in Comparative Examples 1 and 2, the flexible face material B was damaged, and the flexible face material B was mixed into the resin foam C. On the other hand, according to Examples 1 to 5 according to the present invention, the flexible face material B and the resin foam C can be separated and separated with little damage to the flexible face material B. In Examples 1 to 5, no holes are found in the flexible face material B. Therefore, according to Examples 1 to 5 according to the present invention, the high purity resin foam C can be collected by separation and fractionation with little mixing of the flexible face material B.

DESCRIPTION OF SYMBOLS 1 ... Face material separation system 2,30 ... Face material separator 3 ... Separation material accumulation part 4 ... Suction device (suction means) 5 ... Sieve device (separation device) 6 ... Hopper 6a ... Input port 6b ... Discharge port 7 ... Blade Mold face material separation unit 8 ... motor 9 ... connecting part 10 ... wall part 11 ... first blade rotating body 12 ... second blade rotating body 13 ... first rotating shaft 14 ... first rod support plate 15 ... first DESCRIPTION OF SYMBOLS 1 Rod part 16 ... 1st blade board (1st plate-shaped member) 17 ... 2nd rotating shaft 18 ... 2nd rod support plate 19 ... 2nd rod part 20 ... 2nd blade board (1st 31 ... Projection type surface material separating unit 32 ... Wall 33 ... First projection type rotating body 34 ... Second projection type rotating body 35 ... First rotating shaft 36 ... First roll body 37 ... 1st rotating shaft 38 ... 2nd roll body 38 ... 2nd rotating shaft A ... Resin foam with a flexible face material B ... Flexible face material C ... Resin foam F ... Processing direction (predetermined direction) P1 ... 1st press part P2 ... 1st press part P3 ... 1st press part (1st rod-shaped member) P4 ... 2nd press part (2nd rod-shaped member) Q1 ... 1st press surface Q2 ... 2nd press surface Q3 ... 1st press surface Q4 ... 2nd press surface

Claims (12)

A face material separating device for separating a resin foam with a flexible face material into a flexible face material and a resin foam,
A first rotating shaft and a second rotating shaft arranged substantially in parallel;
The flexible face material provided in a plurality in the circumferential direction of the first rotating shaft and introduced between the first rotating shaft and the second rotating shaft as the first rotating shaft rotates. A first pressing portion having a first pressing surface for applying a pressing force to the resin foam with a seal;
The flexible face material provided in a plurality in the circumferential direction of the second rotating shaft and introduced between the first rotating shaft and the second rotating shaft as the second rotating shaft rotates. A second pressing portion having a second pressing surface for applying a pressing force to the resin foam with a cover,
The first rotation shaft and the second rotation shaft are configured to draw the flexible foamed resin foam in a predetermined direction in a state where the first pressing portion and the second pressing portion are not in contact with each other. Rotate to
The first pressing surface extends along the axial direction of the first rotating shaft,
The second pressing surface extends along the axial direction of the second rotating shaft,
The first pressing surface and the second pressing surface cooperate to bend and deform the resin foam with flexible face material, and the resin foam inside the resin foam with flexible face material The surface material separating apparatus is characterized in that the flexible surface material and the resin foam are separated by crushing the material. A hopper having a charging port for charging the resin foam with the flexible face material between the first rotating shaft and the second rotating shaft;
2. The face material separating device according to claim 1, wherein in the extending direction of the first rotating shaft, the width of the charging port is narrower than the width of the first pressing portion and the second pressing portion. . The first pressing portion has a first plate-like member provided to protrude in the radial direction from the first rotating shaft,
3. The face material separating device according to claim 1, wherein the second pressing portion includes a second plate-like member provided to protrude in a radial direction from the second rotation shaft. . The first pressing portion has a first bar-shaped member arranged so as to extend along the axial direction of the first rotating shaft,
The said 2nd press part has a 2nd rod-shaped member arrange | positioned so that it may extend along the axial direction of a said 2nd rotating shaft, The Claim 1 or Claim 2 characterized by the above-mentioned. Face material separator.   The face material separating apparatus according to any one of claims 1 to 4, wherein the first pressing surface and the second pressing surface have curved surfaces.   2. A suction means for sucking the resin foam with a flexible face material introduced between the first rotating shaft and the second rotating shaft in the predetermined direction. The face material separation device according to claim 5. The face material separating device according to any one of claims 1 to 6,
A separating apparatus for separating the flexible face material and the resin foam separated by the face material separating apparatus. A face material separating method for separating a resin foam with a flexible face material into a flexible face material and a resin foam using the face material separating apparatus according to claim 1. And
The resin foam with flexible face material is pulled in the predetermined direction by the cooperation of the first pressing surface and the second pressing surface by the rotation of the first rotating shaft and the second rotating shaft. Withdrawing process;
After the pulling-in step, the flexible foam with the flexible face material is bent and deformed, and the resin foam inside the resin foam with the flexible face material is crushed, and the flexible face material and the A separation step of separating the resin foam;
A face material separation method comprising: a feeding step of feeding the flexible face material and the resin foam separated in the separation step in the predetermined direction.   In the separation step, the first pressing surface or the second pressing surface that rotates is applied to the resin foam with the flexible face material by the impact force applied to the resin foam with the flexible face material. The face material separation method according to claim 8, wherein the resin foam is crushed.   In the separation step, a compressive force is applied to the resin foam with a flexible face material between the first pressing surface and the second rotating shaft or between the second pressing surface and the first rotating shaft. 10. The face material separation method according to claim 8 or 9, wherein the resin foam inside the resin foam with flexible face material is crushed by adding.   11. The face material separation method according to claim 8, wherein the resin foam with a flexible face material drawn in the drawing step is sucked in the predetermined direction.   The face material separation according to any one of claims 8 to 11, further comprising a volume reducing step of reducing the volume of the resin foam with a flexible face material before the drawing step. Method.

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