JP2019014634A - Method and apparatus for producing sintered body - Google Patents

Abstract

To provide a method and apparatus for producing a sintered body, capable of peeling an unwanted layer stably off a laminated plate having a sintered layer and the unwanted layer.SOLUTION: A method for producing a sintered body includes producing the sintered body S2 from a laminated plate S1 having a sintered layer SA and an unwanted layer SB. The method for producing the sintered body includes a step of peeling the unwanted layer SB off the sintered layer SA by bringing the unwanted layer SB in a state of being wet by a peeling liquid into slide contact with a brush body 14. In the peeling step, the unwanted layer SB provided on one side of a main surface of the laminated plate S1 is peeled off in a state where the laminate plate S1 is held by a holding plate 12 for sucking the other side of the main surface of the laminated plate S1. A peeling part P2 in an apparatus 11 for producing the sintered body includes: the holding plate 12; a peeling liquid-feeding part 13 for feeding the peeling liquid to the unwanted layer SB provided on the other side of the main surface of the laminated plate S1 held by the holding plate 12; and the brush body 14 to be brought into slide contact with the unwanted layer SB to which the peeling liquid is fed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sintered body manufacturing method and a sintered body manufacturing apparatus.

  A sintered body such as a ceramic substrate can be obtained, for example, by firing an unsintered body called a green sheet. In recent years, a non-shrinkage firing method is known as a kind of firing method for a green body (see, for example, Patent Document 1). The non-shrinkage firing method is a method in which an unsintered laminated board in which an unsintered body layer and a constraining layer that restrains the unsintered body layer are laminated is subjected to a firing step. In this non-shrinkage firing method, in-plane shrinkage due to firing of the unsintered body layer is suppressed by the constraining layer, so that a sintered body with improved dimensional accuracy can be manufactured. Here, in the non-shrinkage firing method, the constraining layer of the unsintered laminated plate becomes an unnecessary unnecessary layer after the firing step. As a method of peeling off the unnecessary layer laminated on the sintered body in this way, for example, a method using a peeling solution such as water and a brush body as disclosed in Patent Document 1 is known.

JP 2004-253497 A

  In the laminate having the sintered body layer and the unnecessary layer as described above, when the brush body is used to peel off the unnecessary layer, the position of the laminate is shifted from the predetermined position by the sliding contact of the brush body. The peeling force of the unnecessary layer may become unstable.

  The present invention has been made in view of such circumstances, and the object thereof is to produce a sintered body that can stably peel off an unnecessary layer in a laminate having a sintered body layer and an unnecessary layer. The object is to provide a method and an apparatus for producing a sintered body.

  A method of manufacturing a sintered body that solves the above-described problem is a method of manufacturing a sintered body from a laminate having a sintered body layer and an unnecessary layer, and is in a state of being moistened with a stripping solution. The laminate includes a peeling step of peeling the unnecessary layer from the sintered body layer by sliding a brush body in contact with the unnecessary layer, and the holding plate that sucks one main surface of the laminate in the peeling step. In this state, the unnecessary layer provided on the other main surface side of the laminated plate is peeled off.

  According to this method, when the brush body is slidably contacted to the unnecessary layer of the laminated plate, the position of the laminated plate is stabilized by holding it with the holding plate as described above. Therefore, the sliding contact force of the brush body is unnecessary for the laminated plate. The layer can be obtained stably.

In the method for manufacturing a sintered body, it is preferable that the holding plate has an outer peripheral contact surface that is in contact with the entire circumference of the outer peripheral edge of one main surface of the laminated plate.
According to this method, the sliding contact force of the brush body can be easily transmitted to the outer peripheral edge of the unnecessary layer of the laminated plate.

  In the method for manufacturing a sintered body, it is preferable that the holding plate further has an inner peripheral contact surface that is positioned on an inner peripheral side with respect to the outer peripheral contact surface and that contacts one main surface of the laminated plate.

  According to this method, the contact area between the holding plate and the laminated plate can be increased, so that the laminated plate can be held more stably. Thereby, it becomes easier to transmit the sliding contact force of the brush body to the unnecessary layer of the laminate.

  In the method for manufacturing a sintered body, the holding plate has a non-contact surface that forms a flat surface continuous with the outer peripheral contact surface and is not in contact with the laminated plate. It is preferable to arrange so as to surround the outer peripheral contact surface.

  According to this method, since the deformation of the outer peripheral contact surface of the holding plate can be suppressed, the adhesion between the outer peripheral contact surface and the laminated plate can be enhanced. As a result, the suction force of the holding plate that sucks the laminated plate is sufficiently exhibited, so that even if a relatively strong sliding contact force is applied to the unnecessary layer of the laminated plate from the brush body, the positional deviation of the laminated plate is prevented. It becomes possible.

In the method for manufacturing a sintered body, the brush body is a roll brush that is rotationally driven, and it is preferable that the holding plate and the roll brush are relatively moved.
According to this method, for example, the peeling process can be efficiently performed, and the unnecessary layer peeled in the peeling process can be easily discharged.

In the method for manufacturing a sintered body, it is preferable that the roll brush is rotated against the moving direction of the laminated plate defined in the relative movement.
According to this method, the peeling force which peels the unnecessary layer of a laminated board can be raised more.

  In the method for manufacturing a sintered body, the laminated plate has unnecessary layers on both sides of the sintered body layer, and the peeling step includes a first stage of peeling one of the unnecessary layers, and the other The brush body used in the first stage and the second stage is a common roll brush, and in the relative movement of the first stage and the second stage. It is preferable that the defined moving directions of the laminated plates are the same moving directions.

According to this method, it is easy to secure the space for carrying in the laminate and carrying out the sintered body, and it is possible to reduce the size of the manufacturing equipment.
In the method for manufacturing a sintered body, the material of the brush of the brush body is preferably a polyamide resin.

According to this method, scratches are not easily generated on the main surface of the sintered body layer of the laminated plate, and the peeling force of the unnecessary layer can be sufficiently obtained.
In the method for manufacturing a sintered body, the laminate is formed by firing the unsintered body layer of the unsintered laminate in which an unsintered body layer and a constraining layer that restrains the unsintered body layer are laminated. It is preferable that the unnecessary layer of the laminated plate is the constraining layer.

According to this method, a sintered body with high dimensional accuracy can be obtained.
In the method for manufacturing a sintered body, the thickness of the laminated plate may be 5 mm or less.
The laminated plate is more likely to be deformed or damaged as its thickness is reduced. Even in such a thin laminated plate, by using the holding plate as in the above-described method for manufacturing a sintered body, the sliding contact force from the brush body is applied to the unnecessary layer of the laminated plate while protecting the laminated plate. I can tell you enough.

  One aspect of a sintered body manufacturing apparatus that solves the above-described problem is a sintered body manufacturing apparatus that manufactures a sintered body from a laminate having a sintered body layer and an unnecessary layer, the sintered body layer A peeling portion for peeling the unnecessary layer from the holding plate, the peeling portion sucking one main surface of the laminated plate to hold the laminated plate, and the laminated plate held by the holding plate A stripping solution supply unit that supplies stripping solution to the unnecessary layer provided on the other main surface side, and a brush body that is in sliding contact with the unnecessary layer to which the stripping solution is supplied.

  According to the present invention, an unnecessary layer in a laminate having a sintered body layer and an unnecessary layer can be stably peeled off.

It is a schematic front view which shows the manufacturing apparatus of the sintered compact in embodiment. (A) is a top view which shows a holding | maintenance plate, (b) is sectional drawing along the 2b-2b line of (a). It is a schematic front view which shows a part of manufacturing apparatus of a sintered compact. It is a schematic front view which shows a part of manufacturing apparatus of a sintered compact. It is a schematic front view which shows a part of manufacturing apparatus of a sintered compact. It is a schematic front view which shows a part of manufacturing apparatus of a sintered compact.

  Embodiments of a sintered body manufacturing method and a sintered body manufacturing apparatus will be described below with reference to the drawings. Note that in the drawings, for convenience of explanation, some components may be exaggerated or simplified. Further, the dimensional ratio of each part may be different from the actual one. First, the manufacturing apparatus of a sintered compact is demonstrated.

<Overview of sintered body manufacturing equipment>
As shown in FIG. 1, the manufacturing apparatus 11 of the sintered compact in this embodiment is an apparatus which manufactures the sintered compact S2 from the laminated board S1. The laminate S1 has a sintered body layer SA and an unnecessary layer SB. The laminated sheet S1 carried into the sintered body manufacturing apparatus 11 has unnecessary layers SB on both sides of the sintered body layer SA.

  The sintered body manufacturing apparatus 11 includes a carry-in portion P1 of the laminated plate S1, a peeling portion P2 that peels the unnecessary layer SB from the sintered body layer SA of the laminated plate S1, and a sintered body layer SA that peels the unnecessary layer SB. A post-processing section P3 for post-processing the main surface, a reversing section P4 for reversing the laminated sheet S1, and a carrying-out section P5 for carrying out the sintered body S2.

  The sintered body manufacturing apparatus 11 includes a holding plate 12 that sucks one main surface (the lower surface in the present embodiment) of the laminated plate S1 and holds the laminated plate S1. The peeling part P2 in the sintered body manufacturing apparatus 11 is supplied with the peeling liquid supply part 13 for supplying the peeling liquid to the unnecessary layer SB provided on the other main surface side of the unnecessary layer SB of the laminate S1, and the peeling liquid supplied. And a brush body 14 that is in sliding contact with the unnecessary layer SB. The sintered body manufacturing apparatus 11 of the present embodiment further includes a moving mechanism 15 that moves the holding plate 12 relative to the brush body 14 and a reversing mechanism 16 that reverses the laminate S1 in the reversing portion P4. .

<Holding plate>
As shown in FIGS. 2A and 2B, the holding plate 12 in the sintered body manufacturing apparatus 11 has a contact surface 17 that contacts one main surface of the laminated plate S1. The contact surface 17 of the holding plate 12 includes an outer peripheral contact surface 17a that is in contact with the entire periphery of the outer peripheral edge of one main surface of the laminated plate S1, and an inner peripheral contact surface 17b that is positioned on the inner peripheral side of the outer peripheral contact surface 17a. have. The inner peripheral contact surface 17 b is composed of a plurality of spaced apart ones in the in-plane direction of the holding plate 12.

Although the holding plate 12 of this embodiment has four inner peripheral contact surfaces 17b, the inner peripheral contact surface 17b may be singular or plural other than four.
The holding plate 12 has an annular outer circumferential groove 18a that is continuous along the inner edge of the outer circumferential contact surface 17a. The holding plate 12 of the present embodiment is formed between adjacent inner peripheral contact surfaces 17b and has an inner concave groove 18b continuous with the outer peripheral concave groove 18a.

  The holding plate 12 has a non-contact surface 19 that is a flat surface continuous with the outer peripheral contact surface 17a and is not in contact with the laminated sheet S1. The non-contact surface 19 is disposed so as to surround the outer peripheral contact surface 17a.

  The holding plate 12 has a suction hole 20 that is on the inner peripheral side with respect to the outer peripheral contact surface 17a and opens at a position that does not overlap the inner peripheral contact surface 17b in plan view. A suction device 21 is connected to the suction hole 20. As the suction device 21, a decompression pump or the like can be used. In addition, the suction hole 20 may be single or plural.

  Since the outer circumferential groove 18a and the inner groove 18b are depressurized by performing suction through the suction hole 20 with the laminated plate S1 placed on the holding plate 12 configured in this manner, One main surface is sucked. Thereby, the laminated sheet S1 can be maintained in a state of being in close contact with the contact surface 17 of the holding plate 12.

  The shape and dimensions of the outer peripheral contact surface 17a of the holding plate 12 can be changed according to the outer shape of the laminated plate S1. The width dimension of the outer peripheral contact surface 17a of the holding plate 12 is preferably 5 mm or more. That is, it is preferable that the main surface of the laminate S1 is in contact with the outer peripheral contact surface 17a of the holding plate 12 with a width of 5 mm or more from the outer edge. The shape and dimensions of the inner peripheral contact surface 17b of the holding plate 12 can also be changed. The area of the contact surface 17 of the holding plate 12 is preferably 60% or more, more preferably 70% or more, where the area of the main surface of the laminate S1 is 100%. By making the area of the contact surface 17 of the holding plate 12 wider, the laminated plate S1 can be stably held.

  The contact surface 17 of the holding plate 12 is preferably made of a material having high buffering properties and high adhesion to the laminate S1. Specifically, the holding plate 12 of the present embodiment includes a plate base 12a and a pad portion 12b stacked on the plate base 12a. The suction hole 20 is formed through the plate base 12a. The pad portion 12b has the contact surface 17 and the non-contact surface 19 described above. The pad portion 12b is made of a softer material than the plate base 12a. The plate base 12a is preferably made of, for example, a metal material. The pad portion 12b is preferably made of, for example, a rubber material or a resin material, more preferably made of a foam having a closed cell structure, and made of an ester polyurethane foam having a closed cell structure. More preferably. The hardness of the pad portion 12b is preferably A50 or more and A80 or less in A hardness (JIS K6253-3: 2012) measured with a type A durometer.

<Brush body>
The brush body 14 in the sintered body manufacturing apparatus 11 is a roll brush that is rotationally driven. A rotation drive unit 22 such as a motor is connected to the brush body 14. The brush body 14 is rotationally driven around a rotation axis extending along the plate surface of the laminated plate S1. The distance between the brush body 14 and the holding plate 12 can be adjusted by using a position adjusting mechanism such as a well-known screw mechanism or a fluid pressure cylinder.

  The material of the brush of the brush body 14 is preferably a polyamide resin. The fiber of the brush may contain an abrasive. The brush length is preferably 10 mm or more and 30 mm or less. When the bristle length of the brush is 10 mm or more, it is difficult to apply an excessive load to the sintered body layer SA, so that the sintered body layer SA can be prevented from being damaged. When the bristle length of the brush is 30 mm or less, the peeling force of the unnecessary layer SB can be increased. The wire diameter of the brush is preferably 0.1 mm or more and 0.5 mm or less. When the wire diameter of the brush is 0.1 mm or more, the peeling force of the unnecessary layer SB can be increased. When the wire diameter of the brush is 0.5 mm or less, it is difficult to apply an excessive load to the sintered body layer SA, so that damage to the sintered body layer SA can be suppressed.

<Peeling liquid supply unit>
The stripping solution supply unit 13 in the sintered body manufacturing apparatus 11 sprays the stripping solution toward the laminated plate S1 held by the holding plate 12. The stripping solution supply unit 13 includes a nozzle that ejects the stripping solution. The stripping solution is not particularly limited as long as it is a liquid that can promote stripping of the unnecessary layer SB from the sintered body layer SA. As the stripping solution, water is preferably used because it is easy to handle.

<Movement mechanism>
The moving mechanism 15 in the sintered compact manufacturing apparatus 11 is configured to be able to reciprocate the holding plate 12 from the carry-in part P1 to the reversing part P4. The moving mechanism 15 can be comprised from the conveyor part which conveys the holding | maintenance plate 12, and the drive part which moves a conveyor part, for example. The conveyor unit of the moving mechanism 15 includes a known chuck mechanism that positions the holding plate 12 with respect to the conveyor unit.

<Reversing mechanism>
The reversing mechanism 16 in the sintered body manufacturing apparatus 11 is configured to hold both end portions of the laminated plate S1 and place the laminated plate S1 on the holding plate 12 after reversing the front and back of the laminated plate S1, for example. Specifically, the reversing mechanism 16 includes a holding unit that holds the laminated plate S1, an elevating mechanism that raises and lowers the holding unit, and a rotating mechanism that rotates the holding unit so as to reverse the laminated plate S1.

<Washing and drying>
The sintered body manufacturing apparatus 11 includes a post-processing unit P3 including a cleaning liquid supply unit 23 that further supplies a cleaning liquid in a subsequent process of the peeling unit P2. The cleaning liquid supply unit 23 is arranged to supply the cleaning liquid to the moving path of the holding plate 12 between the brush body 14 and the reversing mechanism 16. The cleaning liquid supply unit 23 includes a nozzle that ejects the cleaning liquid. Water is preferably used as the cleaning liquid.

  The post-processing unit P3 of the sintered body manufacturing apparatus 11 in the present embodiment further dries the main surface of the sintered body layer SA (sintered body S2) exposed by peeling off the unnecessary layer SB. It has. The drying device 24 is arranged so as to dry the main surface of the sintered body layer SA washed away with the cleaning liquid. As the drying device 24, for example, a blower that blows hot air on the main surface of the sintered body layer SA can be used. The drying device 24 may be a heating device such as an infrared heater.

<Method for producing sintered body>
Next, the manufacturing method of a sintered compact is demonstrated.
The method for manufacturing the sintered body is a method for manufacturing the sintered body S2 from the laminated plate S1. The laminate S1 is obtained by firing the unsintered body layer of the unsintered laminate in which the unsintered body layer and the constraining layer that restrains the unsintered body layer are laminated. As the green body layer, a known green sheet can be used. Examples of the green sheet include a multilayer ceramic substrate forming green sheet and a wavelength conversion member forming green sheet. The green body layer may have a single layer structure or a multilayer structure. An unsintered body layer (green sheet) contains glass powder and a binder, for example.

  The constraining layer is made of a material that does not sinter at the firing temperature of the green body layer. The constraining layer contains, for example, inorganic powder and a binder. The inorganic powder is, for example, a metal oxide powder, and an aluminum oxide powder can be suitably used.

  An unsintered laminated board can be formed by press-bonding an unsintered body layer and a constraining layer. The firing step of firing the green body layer of the unsintered laminate may be performed with the unsintered laminate being pressed in the thickness direction, or may be performed without applying pressure.

  In the non-shrinkage firing method for firing the unsintered laminated plate configured as described above, in-plane shrinkage due to firing of the unsintered body layer is suppressed by the constraining layer, so that the sintered body has improved dimensional accuracy. S2 can be manufactured. The constraining layer of the unsintered laminate becomes unnecessary after the unsintered body layer is fired. That is, the constraining layer of the unsintered laminated board is an unnecessary layer SB that is no longer necessary in the laminated board S1 after the firing step. The laminated sheet S1 has a thickness of 5 mm or less, for example. The thickness of the laminated board S1 is 0.5 mm or more, for example.

  The manufacturing method of the sintered body includes a peeling step of peeling the unnecessary layer SB from the sintered body layer SA by sliding the brush body 14 in contact with the unnecessary layer SB wetted with a peeling solution. The peeling process of the present embodiment includes a first stage in which one unnecessary layer SB of the laminated board S1 is peeled off and a second stage in which the other unnecessary layer SB of the laminated board S1 is peeled off.

  As shown in FIG. 3, the first stage of the peeling step is performed in a state where the laminated plate S1 is held by the holding plate 12 that sucks one main surface of the laminated plate S1. In the first stage of the peeling process, the unnecessary layer SB provided on the other main surface side of the laminate S1 is peeled off. In the first stage, the holding plate 12 is moved by the moving mechanism 15 in the first moving direction D1. Thereby, the holding plate 12 and the roll brush (brush body 14) can be relatively moved. At this time, it is preferable to rotate the roll brush (brush body 14) against the first moving direction D1 from the viewpoint of increasing the peeling force of the unnecessary layer SB.

  As shown in FIG. 4, in the manufacturing method of a sintered compact, a washing | cleaning process and a drying process are performed after the 1st step of a peeling process. In the cleaning process, the main surface of the sintered body layer SA exposed by peeling off the unnecessary layer SB in the first stage is cleaned with the cleaning liquid supplied from the cleaning liquid supply unit 23. In the drying step, the main surface of the sintered body layer SA cleaned with the cleaning liquid is dried. The cleaning step and the drying step can be performed by moving the holding plate 12 to the post-processing unit P3 in the sintered body manufacturing apparatus 11 described above.

  Next, the holding plate 12 is moved to the reversing part P4 in the sintered body manufacturing apparatus 11. At this time, the other main surface (upper surface) of the laminate S1 is an exposed surface from which the sintered body layer SA is exposed.

  Then, as shown in FIG. 5, in the manufacturing method of a sintered compact, the inversion process is performed in the inversion part P4. In the reversing step, the reversing mechanism 16 reverses the laminated plate S1 so that the unnecessary layer SB of the laminated plate S1 becomes the upper surface. Thus, the laminated plate S1 reversed in the reversing step is held on the holding plate 12. That is, in the laminated plate S1 after the reversing step, the main surface (lower surface) from which the sintered body layer SA is exposed is sucked by the holding plate 12 to be held on the holding plate 12. Next, the holding plate 12 is moved in the second movement direction D2 opposite to the first movement direction D1.

  Subsequently, as shown in FIG. 6, the second stage of the peeling process is performed in the peeling portion P <b> 2, similarly to the first stage of the peeling process. That is, the common brush body 14 (roll brush) is used in the first stage and the second stage of the peeling process. Further, in the first stage and the second stage of the peeling process, the moving direction of the laminate S1 is the same first moving direction D1. In the present embodiment, even after the second stage of the peeling process, after performing the cleaning process and the drying process, the obtained sintered body S2 is carried out to the carry-out part P5.

  The obtained sintered body S2 is subjected to post-processing such as surface polishing as necessary. Examples of the sintered body S2 include a multilayer ceramic substrate, a wavelength conversion member that emits fluorescence having a wavelength different from the incident excitation light, and the like.

According to the embodiment described in detail above, the following operational effects are exhibited.
(1) The manufacturing method of a sintered compact is a method of manufacturing sintered compact S2 from laminated board S1 which has sintered compact layer SA and unnecessary layer SB. The manufacturing method of the sintered body includes a peeling step of peeling the unnecessary layer SB from the sintered body layer SA of the laminate S1 by sliding the brush body 14 on the unnecessary layer SB wetted with the peeling liquid. . In the peeling step, the unnecessary layer SB provided on the other main surface side of the laminated plate S1 is peeled in a state where the laminated plate S1 is held by the holding plate 12 that sucks one main surface of the laminated plate S1.

  According to this method, when the brush body 14 is brought into sliding contact with the unnecessary layer SB of the laminated board S1, the position of the laminated board S1 is stabilized by being held by the holding plate 12 as described above. The contact force can be stably transmitted to the unnecessary layer SB of the laminate S1. Therefore, the unnecessary layer SB in the laminate S1 having the sintered body layer SA and the unnecessary layer SB can be stably peeled off.

  (2) In the manufacturing method of a sintered compact, the holding plate 12 has the outer peripheral contact surface 17a which contacts over the perimeter of the outer periphery in one main surface of laminated board S1. In this case, the sliding contact force of the brush body 14 can be easily transmitted to the outer peripheral edge of the unnecessary layer SB of the laminate S1. Accordingly, it is possible to increase the peeling force for peeling off the unnecessary layer SB of the laminate S1.

  (3) In the method for manufacturing a sintered body, the holding plate 12 further includes an inner peripheral contact surface 17b that is positioned on the inner peripheral side with respect to the outer peripheral contact surface 17a and that is in contact with one main surface of the laminate S1. Yes. In this case, since the contact area between the holding plate 12 and the laminated plate S1 can be increased, the laminated plate S1 can be held more stably. Thereby, it becomes easy to transmit the sliding contact force of the brush body 14 to the unnecessary layer SB of the laminate S1. Therefore, the peeling force for peeling the unnecessary layer SB of the laminate S1 can be further increased.

  (4) In the method for manufacturing a sintered body, the holding plate 12 has a non-contact surface 19 that is a flat surface continuous with the outer peripheral contact surface 17a and is not in contact with the laminated sheet S1. The non-contact surface 19 of the holding plate 12 is disposed so as to surround the outer peripheral contact surface 17a.

  In this case, since the deformation of the outer peripheral contact surface 17a of the holding plate 12 can be suppressed, the adhesion between the outer peripheral contact surface 17a and the laminate S1 can be enhanced. Thereby, even if a relatively strong sliding contact force is applied from the brush body 14 to the unnecessary layer SB of the laminated plate S1 by sufficiently exerting the suction force of the holding plate 12 that sucks the laminated plate S1, the laminated plate S1. It is possible to prevent the displacement of the position. Therefore, the peeling force for peeling the unnecessary layer SB of the laminate S1 can be further increased.

  (5) In the method for manufacturing a sintered body, the brush body 14 is a roll brush that is rotationally driven, and relatively moves the holding plate 12 and the roll brush. In this case, the peeling process can be efficiently performed, and the unnecessary layer SB peeled in the peeling process can be easily discharged. Therefore, the productivity of the sintered body S2 can be easily increased.

  (6) In the method for manufacturing a sintered body, the roll brush is rotated against the moving direction (first moving direction D1) of the laminated plate S1 defined in the relative movement between the holding plate 12 and the roll brush. That is, in this embodiment, the roll brush is rotated in reverse with respect to the normal rotation in the moving direction of the laminate S1. In this case, the peeling force for peeling off the unnecessary layer SB of the laminate S1 can be further increased. Thereby, for example, it becomes possible to reduce a manufacturing facility by reducing the number of the brush bodies 14. In addition, for example, it is possible to increase the manufacturing efficiency of the sintered body S2.

  (7) The laminate S1 has unnecessary layers SB on both surfaces of the sintered body layer SA. The peeling step in the method for manufacturing a sintered body includes a first stage for peeling one unnecessary layer SB and a second stage for peeling the other unnecessary layer SB. In the peeling process, the brush body 14 used in the first stage and the second stage is a common roll brush, and the moving directions of the laminate S1 defined in the relative movement in the first stage and the second stage are the same. It is a moving direction (first moving direction D1).

In this case, it is easy to secure a space for carrying in the laminated plate S1 and carrying out the sintered body S2, and it is possible to reduce the size of the manufacturing equipment.
(8) In the manufacturing method of a sintered compact, it is preferable that the material of the brush of the brush body 14 is a polyamide-type resin. In this case, the main surface of the sintered body layer SA of the laminate S1 is hardly damaged, and a sufficient peeling force for the unnecessary layer SB can be obtained. Accordingly, it is possible to improve the yield of the sintered body S2 and increase the production efficiency of the sintered body S2.

  (9) The laminate S1 is obtained by firing the unsintered body layer of the unsintered laminate in which the unsintered body layer and the constraining layer that restrains the unsintered body layer are laminated. The unnecessary layer SB of the laminate S1 is a constraining layer. In this case, a sintered body S2 with high dimensional accuracy can be obtained.

  (10) The laminated plate S1 is more likely to be deformed or damaged as its thickness is reduced. Even in such a thin laminated plate S1, the sliding plate force from the brush body 14 is laminated while the laminated plate S1 is protected by using the holding plate 12 as in the manufacturing method of the sintered body. It can be sufficiently transmitted to the unnecessary layer SB of the plate S1. Therefore, the manufacturing method of the sintered compact of this embodiment can be used suitably as a method of manufacturing sintered compact S2 from laminated board S1 whose thickness is 5 mm or less.

  (11) The sintered body manufacturing apparatus 11 is an apparatus for manufacturing the sintered body S2 from the laminated plate S1 having the sintered body layer SA and the unnecessary layer SB. The sintered body manufacturing apparatus 11 includes a peeling portion P2 that peels the unnecessary layer SB from the sintered body layer SA of the laminated plate S1. The peeling part P2 sucks one main surface of the laminated plate S1 to hold the laminated plate S1, and an unnecessary layer provided on the other main surface side of the laminated plate S1 held by the holding plate 12 A stripping solution supply unit 13 that supplies stripping solution to the SB and a brush body 14 that is in sliding contact with the unnecessary layer SB supplied with the stripping solution are provided.

According to this configuration, the same effect as the effect described in the above section (1) can be obtained.
(Example of change)
You may change the said embodiment as follows.

  -As a structure of the holding | maintenance plate 12 used with the manufacturing method of a sintered compact, the structure which has a contact surface only inside the outer periphery of one main surface of laminated board S1, for example, the structure which abbreviate | omitted the inner peripheral contact surface 17b A configuration in which the non-contact surface 19 surrounding the outer peripheral contact surface 17a is omitted may be employed.

-In the manufacturing method of the said sintered compact, you may perform at least one step of the 1st step and the 2nd step of a peeling process using a some brush body.
-In the manufacturing method of the said sintered compact, although the roll brush is used as the brush body 14, the disk brush rotated centering around the rotating shaft orthogonal to the plate surface of laminated sheet S1 may be used, for example. In this case, by using a disk brush having an outer shape larger than the outer shape of the laminated plate S1, the peeling step can be performed without relatively moving the brush body and the laminated plate S1. Also, the brush body can be changed to a non-rotatable plate brush.

  -In the manufacturing method of a sintered compact, even if it rotates the brush body 14 (roll brush) toward the moving direction of the laminated board S1 by the rotational drive which accelerated the circumferential speed rather than the moving speed of the laminated board S1, (forward rotation). Good.

  In the manufacturing method of the sintered body, the holding plate 12 (laminated plate S1) is moved in the first stage and the second stage of the peeling process, but the brush body 14 (roll brush) is moved without moving the holding plate 12. ) May be moved. Even in this case, the same effect as the effect described in the column (5) can be obtained. In addition, when moving the brush body 14, the moving direction of the laminated board S1 prescribed | regulated in the relative movement of the holding | maintenance plate 12 (laminated board S1) and a roll brush turns into a direction opposite to the moving direction of the brush body 14. FIG.

  In the manufacturing method of the sintered body, the common brush body 14 is used in the first stage and the second stage of the peeling process, but a brush body different from the brush body used in the first stage is used in the second stage. Also good. For example, the first stage and the second stage of the peeling process can be performed by arranging a line that performs the first stage of the peeling process and a line that performs the second stage of the peeling process in series or in parallel. .

  In the manufacturing method of the sintered body, in the first stage and the second stage of the peeling process, the moving direction of the laminated sheet S1 is the same first moving direction D1, but the second stage is the first moving direction. It can also be performed by moving the laminated sheet S1 in the second movement direction D2 opposite to D1. In the second stage, when the brush body different from the first stage is used as described above, the laminate S1 is moved in a direction different from both the first movement direction D1 and the second movement direction D2. You can also.

  -In the manufacturing method of the sintered body, after the laminated plate S1 is held on the holding plate 12, the unnecessary layer SB of the laminated plate S1 is moistened with the peeling liquid, but the unnecessary layer SB of the laminated plate S1 is peeled off. The laminated plate S1 may be held by the holding plate 12 after being wetted with the liquid.

  The laminate S1 has the unnecessary layers SB on both sides of the sintered body layer SA, but may be a laminate having the unnecessary layer SB on one side of the sintered body layer SA. That is, in the method for manufacturing a sintered body, the second step of the inversion step and the peeling step may be omitted.

  The unnecessary layer SB of the laminated plate S1 is a constrained layer laminated on an unsintered laminated plate, but the unnecessary layer SB is not limited to the constrained layer, for example, the main layer of the sintered body layer SA in the course of sintering. It may be an impurity layer deposited on the surface.

The laminate S1 has a quadrangular shape in plan view, but may be changed to a laminate having another shape such as a polygonal shape or a circular shape other than the quadrangular shape.
In the method for manufacturing a sintered body, at least one of the cleaning process using the cleaning liquid supply unit 23 and the drying process using the drying device 24 can be omitted. For example, the sintered body S2 can be washed in a later process or naturally dried.

DESCRIPTION OF SYMBOLS 11 ... Manufacturing apparatus of a sintered compact, 12 ... Holding plate, 13 ... Stripping liquid supply part, 14 ... Brush body, 17a ... Outer peripheral contact surface, 17b ... Inner peripheral contact surface, 19 ... Non-contact surface, D1 ... First movement Direction, P2 ... peeling part, S1 ... laminated board, S2 ... sintered body, SA ... sintered body layer, SB ... unnecessary layer.

Claims (11)

A method for producing a sintered body for producing a sintered body from a laminate having a sintered body layer and an unnecessary layer,
A peeling step of peeling the unnecessary layer from the sintered body layer by sliding the brush body in contact with the unnecessary layer moistened with a peeling liquid;
In the peeling step, the unnecessary layer provided on the other main surface side of the laminated plate is peeled in a state where the laminated plate is held by a holding plate that sucks one main surface of the laminated plate. A method for manufacturing a sintered body.   The method for manufacturing a sintered body according to claim 1, wherein the holding plate has an outer peripheral contact surface that is in contact with the entire periphery of the outer peripheral edge of one main surface of the laminated plate.   3. The sintered body according to claim 2, wherein the holding plate further includes an inner peripheral contact surface that is positioned on an inner peripheral side with respect to the outer peripheral contact surface and that contacts one main surface of the laminated plate. Manufacturing method. The holding plate is a flat surface continuous with the outer peripheral contact surface, and has a non-contact surface that is non-contact with the laminated plate,
The said non-contact surface is arrange | positioned so that the said outer peripheral contact surface may be surrounded, The manufacturing method of the sintered compact of Claim 2 or Claim 3 characterized by the above-mentioned. The brush body is a roll brush that is driven to rotate,
The method for manufacturing a sintered body according to any one of claims 1 to 4, wherein the holding plate and the roll brush are relatively moved.   The method for manufacturing a sintered body according to claim 5, wherein the roll brush is rotated against the moving direction of the laminated plate defined in the relative movement. The laminated plate has unnecessary layers on both sides of the sintered body layer,
The peeling step includes a first stage for peeling one of the unnecessary layers and a second stage for peeling the other unnecessary layer,
The brush bodies used in the first stage and the second stage are the common roll brushes, and the movement directions of the laminated plates defined in the relative movement of the first stage and the second stage are mutually The method for producing a sintered body according to claim 5 or 6, wherein the directions of movement are the same.   The method for manufacturing a sintered body according to any one of claims 1 to 7, wherein a material of the brush of the brush body is a polyamide-based resin.   The laminate is obtained by firing the unsintered laminate layer of an unsintered laminate in which an unsintered laminate layer and a constraining layer that restrains the unsintered laminate layer are laminated. The method according to claim 1, wherein the unnecessary layer is a constraining layer.   The thickness of the said laminated board is 5 mm or less, The manufacturing method of the sintered compact as described in any one of Claims 1-9 characterized by the above-mentioned. A sintered body manufacturing apparatus for manufacturing a sintered body from a laminate having a sintered body layer and an unnecessary layer,
A peeling portion for peeling off the unnecessary layer from the sintered body layer,
The peeling portion includes a holding plate that sucks one main surface of the laminated plate to hold the laminated plate, and the unnecessary layer provided on the other main surface side of the laminated plate held by the holding plate. An apparatus for manufacturing a sintered body, comprising: a peeling liquid supply unit that supplies a peeling liquid to the brush and a brush body that is slidably contacted with the unnecessary layer to which the peeling liquid is supplied.