JP4720381B2 - Manufacturing method of laminated rubber bearing for inspection - Google Patents

Description

  The present invention relates to a method of manufacturing a laminated rubber bearing for inspection under the same conditions as a large-sized laminated rubber bearing that supports structures such as bridges and elevated roads.

JP-A-55-55860 JP 2003-184952 A

  Upper structures such as bridges and bridge girders such as elevated roads are supported on lower structures such as bridge piers via laminated rubber bearings, which are sheared against horizontal displacement of the upper structure. The deformation is allowed and the displacement is allowed, and the displacement is allowed by compressive deformation with respect to the rotational displacement of the upper structure. In this laminated rubber bearing, after being manufactured in a factory, it is necessary to test the performance of the produced laminated rubber bearing in advance. If the size of the laminated rubber bearing is relatively small, the production and performance test of the laminated rubber bearing can be performed relatively easily. However, the larger the size of the laminated rubber bearing, the more the production and performance test. Will be difficult.

  In particular, in recent years, laminated rubber bearings have become larger (in the case of rectangular laminated rubber bearings, the length of one side exceeds 1000 mm), and it is possible to produce this larger laminated rubber bearing. When performing the performance test of the large laminated rubber bearing, a large test apparatus is required, and the cost required for the equipment of the apparatus increases the product cost of the laminated rubber bearing.

  Therefore, under the present circumstances, after manufacturing a large laminated rubber bearing, a method of obtaining a laminated rubber bearing by cutting to a desired size by a cutting means such as a band saw (see Patent Documents 1 and 2) is employed.

  In the cutting means such as the band saw described above, the cutting surface due to the damage of the saw blade during cutting due to the difference in rigidity between the rubber layer of the laminated rubber support and the reinforcing plate or the cutting resistance force to the saw blade is not constant. In the laminated rubber bearing obtained by such cutting means, the cut surfaces of the rubber layer and the reinforcing plate are exposed in a rough state, and the cut surfaces are exposed in the shear deformation performance test. There is a possibility that the rubber layer may become a starting point of breakage. Further, in the means for cutting only the rubber single layer portion as in Patent Document 2, the roughness and unevenness of the cut surface may similarly be the starting point of the break.

  The present invention has been made in view of the above-mentioned points, and the object of the present invention is to eliminate the labor of cutting a large laminated rubber bearing, and to reduce the shear deformation performance due to the damage of the cut surface by the cutting operation. It is an object of the present invention to provide a method for producing a laminated rubber bearing for inspection that does not cause any problems.

  The method for manufacturing a laminated rubber bearing for inspection according to the present invention includes a step of preparing a mold having an opening at the upper end surface and a rectangular hollow portion in plan view, and an unvulcanized rubber plate and a reinforcing plate are alternately provided. A die having a rectangular laminated rubber body having a laminated body laminated in a plan view, and one vertical plane portion adjacent to the one convex corner portion, corresponding to the vertical plane portion. A step of placing the inner wall in a hollow portion so as to be in contact with the vertical wall surface of the substrate, and a substantially L-shaped partition member having thermal conductivity equivalent to that of the unvulcanized rubber plate. The laminated rubber body is disposed in the hollow portion of the mold in contact with each of the other adjacent vertical plane portions across the other convex corner portion of the diagonal position of the one convex corner portion. A rectangular hollow rubber body and a partition member form a substantially L-shaped remaining hollow portion in the hollow portion of the mold. And a substantially L-shaped laminated rubber body in a plan view having a laminated body in which unvulcanized rubber plates and reinforcing plates are alternately laminated, and sandwiching the convex corners on the outside Adjacent vertical plane portions are brought into contact with the vertical wall surface of the mold corresponding to the outer vertical plane portion, and the inner adjacent vertical plane portions are sandwiched between the concave corner portions and the other vertical plate surface of the partition member And a step of disposing it in a substantially L-shaped remaining hollow portion so as to be in contact with each other, closing the opening of the mold, and applying pressure and heating to a rectangular laminated rubber body and a substantially L-shaped laminated rubber body And a step of disassembling the mold and the partition member to obtain a laminated rubber bearing for inspection made of a rectangular laminated rubber body after the vulcanization molding.

  Another method of manufacturing a laminated rubber bearing for inspection according to the present invention includes a step of preparing a mold having an opening at an upper end surface and a rectangular hollow portion in plan view, an unvulcanized rubber plate, a reinforcing plate, Are substantially L-shaped laminated rubber bodies having a substantially L-shaped laminated body in a plan view, and the outer vertical plane portions are adjacent to each other with the convex corners therebetween. A step of arranging in a hollow portion so as to abut against a vertical wall surface of a mold corresponding to the above, and a substantially L-shaped partition member having thermal conductivity equivalent to that of the unvulcanized rubber plate, The vertical plate surface is placed in the hollow portion of the mold while being brought into contact with each of the adjacent vertical plane portions on the inside with the concave corner portion of the substantially L-shaped laminated rubber body interposed therebetween, and the substantially L-shaped laminated rubber body and the partition Forming a rectangular residual hollow portion in plan view in the hollow portion of the mold with the member, and an unvulcanized rubber plate A rectangular laminated rubber body having a laminated body in which reinforcing plates are alternately laminated in a plan view, and one vertical plane portion adjacent to each other with one convex corner portion interposed therebetween. The other adjacent vertical plane part is placed on the other side of the other corner of the convex part with the other corner part of the diagonal part of the one corner part on the other side. A rectangular laminated rubber body that is disposed in the remaining hollow portion of the square shape so as to be in contact with the adjacent vertical plane portions on the inside, and the opening of the mold is closed, and is pressed and heated. And a step of vulcanizing and molding the substantially L-shaped laminated rubber body, and a step of disassembling the mold and the partition member after the vulcanization molding to obtain a laminated rubber bearing for inspection comprising a rectangular laminated rubber body. It is characterized by

  According to the method for manufacturing a laminated rubber bearing for inspection of the present invention, a rectangular laminated rubber body and a substantially L-shape arranged in a mold via a partition member having thermal conductivity equivalent to that of an unvulcanized rubber plate. Since the laminated rubber body is vulcanized and molded under the same molding conditions, a rectangular laminated rubber body and a substantially L-shaped laminated rubber body having the same rubber physical properties and adhesive strength are obtained after vulcanization molding. In the rectangular laminated rubber body obtained in this way, the vertical plane portions of the outer peripheral surface thereof are each formed as a flat surface, so that the rectangular laminated rubber body is caused by damage to the cut surface by the cutting operation. It is possible to provide a laminated rubber bearing for inspection that does not cause deterioration in shear deformation performance.

  Still another method of manufacturing the laminated rubber bearing for inspection according to the present invention includes a step of preparing a mold having an opening at the upper end surface and a rectangular hollow portion in plan view, an unvulcanized rubber plate, and a reinforcing plate. And a rectangular laminated rubber body in a plan view alternately laminated with one vertical corner portion of the mold corresponding to the vertical plane portion sandwiching one convex corner portion. A step of placing the vertical wall facing each other with a gap and placing it in the hollow portion, and a substantially L-shaped partition member having thermal conductivity equivalent to that of the unvulcanized rubber plate, one vertical plate surface of which is rectangular. Arranged in the hollow part of the mold with a gap between each other vertical plane part on the other side across the other convex corner part of the diagonal position of the one convex corner part of the laminated rubber body A rectangular laminated rubber body and a partition member together with a substantially L-shaped residual in the hollow portion of the mold A substantially L-shaped laminated rubber body having a substantially L-shape in a plan view having a step of forming an empty portion and a laminate in which unvulcanized rubber plates and reinforcing plates are alternately laminated, The adjacent vertical plane portions on the outside on the opposite side are arranged on the vertical wall surface of the mold corresponding to the outer vertical plane portion, and the adjacent vertical plane portions on the inner side with the concave corner portion on the other side of the partition member Facing the vertical plate surface, placing the substantially L-shaped remaining hollow portion, placing the unvulcanized rubber plate in each of the gaps, closing the mold opening, A step of vulcanizing and molding each of the unvulcanized rubber plate of the rectangular laminated rubber body, the substantially L-shaped laminated rubber body and the gap by pressurization and heating, and after the vulcanization molding, the mold and the partition member are disassembled, And a step of obtaining a laminated rubber bearing for inspection comprising a rectangular laminated rubber body having a rubber coating layer on the outer peripheral surface. To.

  Still another method of manufacturing the laminated rubber bearing for inspection according to the present invention includes a step of preparing a mold having an opening at the upper end surface and a rectangular hollow portion in plan view, an unvulcanized rubber plate, and a reinforcing plate. And a substantially L-shaped laminated rubber body having a substantially L shape in a plan view having a laminated body formed by alternately laminating and a vertical plane portion on the outside adjacent to each other with the convex corner portion interposed therebetween. A step of arranging in a hollow part so as to face a vertical wall surface of a mold corresponding to the part, and a substantially L-shaped partition member having thermal conductivity equivalent to that of the unvulcanized rubber plate, And a substantially L-shaped laminated rubber body, and a vertical plate surface of the L-shaped laminated rubber body facing each of the adjacent vertical plane portions on the inner side across the concave corner of the substantially L-shaped laminated rubber body, Forming a rectangular residual hollow part in plan view in the hollow part of the mold with the partition member; A rectangular laminated rubber body having a laminated body in which a vulcanized rubber plate and a reinforcing plate are alternately laminated in a plan view, and one adjacent vertical plane portion sandwiching one convex corner portion. Is placed on the vertical wall surface of the mold corresponding to the vertical plane portion with a gap, and the other vertical plane portion on the other side is sandwiched by the other convex corner portion at the diagonal position of the one convex corner portion. Are disposed in the vertical hollow portions adjacent to each other with the gap between the concave corners of the partition member so as to face each other in the remaining hollow portion of the rectangular shape, and an unvulcanized rubber plate in each of the gaps. And a step of vulcanizing and molding the rectangular laminated rubber body, the substantially L-shaped laminated rubber body, and the unvulcanized rubber plate in the gap by closing the opening of the mold and pressurizing and heating. After vulcanization molding, the mold and partition member are disassembled, and the outer peripheral surface has a rubber coating layer. Obtaining a test laminated rubber bearing made of shape laminated rubber body towards the, characterized in that it contains.

  As described above, in the method for manufacturing a laminated rubber bearing for inspection according to the present invention, a gap between one adjacent vertical plane portion of a rectangular laminated rubber body and a vertical wall surface of a mold corresponding to the vertical plane portion. In addition, unvulcanized rubber plates may be disposed in the gaps between the other adjacent vertical flat surface portions of the rectangular laminated rubber body and one vertical plate surface of the partition member. According to such a manufacturing method, the gap between one adjacent vertical plane portion of the rectangular laminated rubber body and the vertical wall surface of the mold corresponding to the vertical plane portion and the other phase of the rectangular laminated rubber body. The unvulcanized rubber plates disposed in the gaps between the adjacent vertical plane portions and one vertical plate surface of the partition member are melted at the time of vulcanization molding, and the outer peripheral surface is connected to the outer peripheral surface of the rectangular laminated rubber body. An integral rubber coating layer is formed, and the outer peripheral surface of the rectangular laminated rubber body is covered with the rubber coating layer. Not only can defects be reliably prevented, but there is no degradation in shear deformation performance due to damage to the cut surface due to the cutting operation. The rubber coating layer integrated with the outer peripheral surface of this rectangular laminated rubber body by vulcanization molding is usually formed to a thickness of 5 to 10 mm.

  In the method for producing a laminated rubber bearing for inspection according to the present invention, the partition member is preferably a phenol resin, for example, a phenol resin having a thermal conductivity equivalent to 0.13 kcal / mh ° C. of an unvulcanized rubber plate. A board is used.

  The partition member may have a plurality of through holes extending from one vertical plate surface to the other vertical plate surface and penetrating in the plate thickness direction. This through-hole is for allowing the unvulcanized rubber plate in the mold to melt and flow during vulcanization molding, and its size (diameter), number, interval, etc. are the same as those of the unvulcanized rubber plate. It is determined appropriately depending on hardness and the like.

  The partition member is fixed to the mold as long as the partition member itself is evenly clamped from the surroundings by the pressure generated in the mold during vulcanization molding. You may employ | adopt the method of fixing a type | mold and a partition member with a pin etc., or the method of fitting and fixing this partition member to the ditch | groove formed in the lower metal mold | die of a metal mold | die. The partition member may be made of an integrally formed member, but may be made of at least two partition plates that can be easily separated.

  According to the present invention, there is provided a method for manufacturing a laminated rubber bearing for inspection that can save the labor of cutting a large laminated rubber bearing and does not cause deterioration in shear deformation performance due to damage to the cut surface due to cutting work. can do.

  Next, embodiments of the present invention will be described in more detail based on preferred examples shown in the drawings. The present invention is not limited to these examples.

  1 to 6, the mold 1 that can be assembled and disassembled includes a plate-like upper mold 3 having a frame plate 2 attached to the peripheral edge of the lower surface, a plate-like lower mold 4, and upper, lower In the state where the mold 1 is assembled (the state shown in FIGS. 4, 5 and 6), which is composed of the middle molds 5a, 5b, 5c and 5d arranged between the molds 3 and 4. A rectangular hollow portion 6 is formed in the mold 1 in plan view.

  The rectangular unvulcanized laminated rubber body 7 having a rectangular shape in plan view is made of a steel plate for attachment to a lower structure and is disposed on the lower connecting plate 8 and the upper surface of the lower connecting plate 8 and is unvulcanized. A laminated body 11 in which rubber plates 9 and reinforcing plates 10 made of steel plates are alternately laminated, and an upper connecting plate 12 arranged on the upper surface of the laminated body 11 and made of steel plates for attachment to an upper structure. The lower connecting plate 8, the laminated body 11, and the upper connecting plate 12 are laminated and formed.

  The rectangular unvulcanized laminated rubber body 7 has one convex corner portion 7a matched with the concave corner portion 5e formed by the middle molds 5a and 5b erected on the upper surface of the lower mold 4 of the mold 1. In addition, the vertical flat portions 7b and 7c that are adjacent to each other with the convex corner portion 7a interposed therebetween are brought into contact with the vertical wall surfaces 5g and 5h of the middle molds 5a and 5b corresponding to the vertical flat portions 7b and 7c. 6 is arranged.

  Partitions made of phenol resin are respectively provided on the other vertical plane portions 7d and 7e adjacent to each other across another convex corner portion 7f at a diagonal position of the convex corner portion 7a of the rectangular unvulcanized laminated rubber body 7. Easily separable partition plates 13 and 14 are arranged with their vertical plate surfaces 13a and 14a in contact with each other, and have a thermal conductivity equivalent to that of the unvulcanized rubber plate 9. The partition plates 13 and 14 are disposed in the hollow portion 6. Each of the partition plates 13 and 14 has a plurality of through holes 13d and 14d extending from one of the vertical plate surfaces 13a and 14a to each of the other vertical plate surfaces 13b and 14b and penetrating in the thickness direction. It has.

  By disposing the rectangular unvulcanized laminated rubber body 7 and the partition plates 13 and 14 in the hollow portion 6 of the mold 1, there is a substantially L-shaped residual in the hollow portion 6 of the mold 1 in plan view. The hollow portion 6a is formed.

  The substantially L-shaped unvulcanized laminated rubber body 15 having a substantially L shape in plan view includes a lower connecting plate 16 made of a steel plate, and a reinforcing plate made of an unvulcanized rubber plate 17 and a steel plate on the upper surface of the lower connecting plate 16. The laminated body 19 in which 18 is alternately laminated, and the upper connecting plate 20 made of a steel plate are laminated on the upper surface of the laminated body 19.

  The substantially L-shaped unvulcanized laminated rubber body 15 matches the convex corner portion 15a with the concave corner portion 5f formed by the middle molds 5c and 5d of the mold 1 at a diagonal position with the concave corner portion 5e of the mold 1. The vertical plane portions 15b and 15c adjacent to each other across the outer convex corner portion 15a are brought into contact with the vertical wall surfaces 5i and 5j of the middle molds 5c and 5d of the mold 1 corresponding to the vertical plane portions 15b and 15c. The inner concave corners 15d are made to coincide with the convex corners 13c formed by the partition plates 13 and 14, and the adjacent vertical flat portions 15e and 15f located inside with the concave corners 15d are sandwiched between the partition plates 13 and 14 is disposed in the substantially L-shaped hollow portion 6a of the hollow portion 6 in contact with the other vertical plate surfaces 13b and 14b adjacent to each other across the convex corner portion 13c.

  The upper mold 3 is formed in the opening 21 of the mold 1 in which the rectangular unvulcanized laminated rubber body 7, the partition plates 13 and 14, and the substantially L-shaped unvulcanized laminated rubber body 15 are arranged in the hollow portion 6. Is placed.

  Next, a required molding pressure is applied from the upper mold 3 of the mold 1 to the rectangular unvulcanized laminated rubber body 7 and the substantially L-shaped unvulcanized laminated rubber body 15 by a vulcanization molding press (not shown). Then, it is heated and pressure-molded for a required time by a hot plate provided in the vulcanization press. Pressurization to the rectangular unvulcanized laminated rubber body 7 and the substantially L-shaped unvulcanized laminated rubber body 15 through the upper mold 3 is performed by connecting the upper mold 3 and the rectangular unvulcanized laminated rubber body 7 to the upper part. Pressurized intervening plates made of steel plates having the same shape as the upper connecting plates 12 and 20 are arranged between the plates 12 and between the upper mold 3 and the upper connecting plate 20 of the substantially L-shaped unvulcanized laminated rubber body 15. Then, the lower surface of the upper mold 3 may be brought into contact with the upper surface of the pressure interposed plate and the molding pressure of the upper mold 3 may be applied to the pressure interposed plate. A rectangular shape so that a part of the plates 12 and 20 protrudes from the upper surfaces 5k of the middle molds 5a, 5b, 5c and 5d and the upper surfaces 13e and 14e of the partition plates 13 and 14 and is arranged outside the hollow portion 6. Middle molds 5a, 5b, 5c and 5 with respect to the vertical height of the unvulcanized laminated rubber body 7 and the substantially L-shaped unvulcanized laminated rubber body 15 In addition, the height in the vertical direction of the partition plates 13 and 14 may be set low, and the molding pressure of the upper mold 3 may be applied to the upper connecting plates 12 and 20 partially disposed outside the hollow portion 6. .

  After the vulcanization molding, the mold 1 and the partition plates 13 and 14 are disassembled, and the unvulcanized rubber plate 9 and the reinforcing plate 10 made of a steel plate, the lower connecting plate 8, and the upper connecting plate 12 are vulcanized and bonded to each other. A laminated rubber bearing 22 for inspection and a substantially L-shaped laminated rubber body 23 are obtained.

  In the above manufacturing method, the molding pressure applied to the rectangular unvulcanized laminated rubber body 7 and the substantially L-shaped unvulcanized laminated rubber body 15 disposed in the hollow portion 6 of the mold 1 is such that the mold 1 The same mold as the mold for producing a large laminated rubber body (a laminated rubber body having an outer dimension in which a rectangular unvulcanized laminated rubber body 7 and a substantially L-shaped unvulcanized laminated rubber body 15 are integrated) Therefore, the molding pressure is the same as the molding pressure when manufacturing such a large laminated rubber body, and the rectangular unvulcanized laminated rubber body 7 and the substantially L-shaped unvulcanized laminated body. The vulcanization temperature applied to the rubber body 15 during vulcanization molding is such that the heat conduction of the unvulcanized rubber plates 9 and 17 between the rectangular unvulcanized laminated rubber body 7 and the substantially L-shaped unvulcanized laminated rubber body 15. A rectangular unvulcanized laminated rubber body which has a thermal conductivity equivalent to that of the resin and is partitioned by partition plates 13 and 14 made of phenol resin. And the substantially L-shaped unvulcanized laminated rubber body 15 so as not to cause a difference in heat conduction, so that it becomes the same as the vulcanization temperature when producing the above-mentioned large laminated rubber body, Furthermore, since the vulcanization molding time is also the same as the molding time for producing a large laminated rubber body, the large laminated rubber body and the rectangular laminated rubber bearing 22 for inspection obtained by the above production method are used. The substantially L-shaped laminated rubber body 23 is manufactured under the same conditions.

  Therefore, since the laminated rubber bearing for inspection 22 has the same properties as the properties of the large-sized laminated rubber body such as shear deformability, elongation characteristics, adhesive strength, etc., it is large to inspect the laminated rubber bearing 22 for inspection. Therefore, this manufacturing method can eliminate the trouble of cutting the conventional large-sized laminated rubber body, and the shear deformation performance is reduced due to the damage of the cut surface by the cutting operation. It is possible to provide a laminated rubber bearing for inspection that does not cause any problems.

The manufacturing method of the laminated rubber bearing 22 for inspection comprising the above-mentioned rectangular unvulcanized laminated rubber body 7 is prepared by preparing the mold 1 and sandwiching the convex corner portion 7a of the rectangular unvulcanized laminated rubber body 7. The rectangular unvulcanized laminated rubber body 7 is disposed in the hollow portion 6 so that the matching vertical plane portions 7b and 7c are in contact with the vertical wall surfaces 5g and 5h of the mold 1, and the vertical plate surfaces 13a and 14a are arranged. Is placed in contact with each of the adjacent vertical flat surfaces 7d and 7e across the convex corner portion 7f on the diagonal position of the convex corner portion 7a, and the partition plates 13 and 14 are disposed in the hollow portion 6 and are not square. The vulcanized laminated rubber body 7 and the partition plates 13 and 14 form a hollow portion 6a, and the vertical plane portions 15b adjacent to each other on the outside sandwiching the convex corner portion 15a of the substantially L-shaped unvulcanized laminated rubber body 15; 15c is brought into contact with the vertical wall surfaces 5i and 5j of the mold 1, and the inner phase is sandwiched between the concave corners 15d. The substantially L-shaped laminated rubber body 15 is disposed in the hollow portion 6a so that the vertical plane portions 15e and 15f that come into contact with the vertical plate surfaces 13b and 14b of the partition plates 13 and 14, and then the mold 1 The rectangular unvulcanized laminated rubber body 7 and the substantially L-shaped laminated rubber body 15 are vulcanized and molded by pressurization and heating. After vulcanization molding, the mold 1 and the partition plate 13 and Although so as to dismantle the 14, instead of this, after preparation of the mold 1, so as the vertical plane portions 15b and 15c Ru is in contact with the vertical wall surface 5i and 5j substantially L-shaped laminated rubber body 15 Is disposed in the hollow portion 6, the vertical plate surfaces 13b and 14b are brought into contact with the vertical plane portions 15e and 15f, respectively, and the partition plates 13 and 14 are disposed in the hollow portion 6 and the substantially L-shaped laminated rubber body. 15 and partition plates 13 and 14 in the hollow portion 6 of the mold 1 A rectangular hollow portion 6b is formed in a plan view, the vertical plane portions 7b and 7c are brought into contact with the vertical wall surfaces 5g and 5h, and adjacent to each other with the convex corner portion 7f at the diagonal position of the convex corner portion 7a interposed therebetween. The rectangular unvulcanized laminated rubber body 7 is disposed in the hollow portion 6b so that the vertical plane portions 7d and 7e are brought into contact with the adjacent vertical plane portions 13a and 14a across the recessed corner portion 13c, and then The opening 21 of the mold 1 is closed, and the rectangular unvulcanized laminated rubber body 7 and the substantially L-shaped laminated rubber body 15 are vulcanized and molded by pressurization and heating. After vulcanization molding, the mold 1 and the partition The plates 13 and 14 may be disassembled.

  8 to 10 show another manufacturing method of the laminated rubber bearing for inspection. The present manufacturing method is the above-described manufacturing method, wherein the vertical flat portions 7b and 7c and the vertical flat portions 7b and 7c that are adjacent to each other across the convex corner portion 7a of the rectangular unvulcanized laminated rubber body 7 face each other. The other adjacent vertical plane across the gap between the vertical wall surfaces 5g and 5h of the molds 5a and 5b and the convex corner portion 7f at the diagonal position of the convex corner portion 7a of the rectangular unvulcanized laminated rubber body 7 The gap between the vertical plate surfaces 13a and 14a of the partition plates 13 and 14 which are disposed facing the portions 7d and 7e and the vertical plane portions 7d and 7e and are substantially L-shaped unvulcanized laminate The vertical plane portions 15b and 15c that are adjacent to each other across the convex corner portion 15a on the outer side of the rubber body 15, and the vertical wall surfaces 5i and 5j of the middle molds 5c and 5d that are disposed facing the vertical plane portions 15b and 15c, Gap between the two, substantially L-shaped unvulcanized The other vertical plate surface 13b of the partition plates 13 and 14 arranged opposite to each other on the inner side vertical plane portions 15e and 15f and the vertical plane portions 15e and 15f across the concave corner portion 15d on the inner side of the rubber layer 15 14 b, facing the vertical plane portion 15 c of the substantially L-shaped unvulcanized laminated rubber body 15 connected to the vertical plane portion 15 c on the one hand and to the vertical plane portion 15 f on the other side. A vertical plane of the substantially L-shaped unvulcanized laminated rubber body 15 that is connected to the vertical wall surface 5g of the middle mold 5a and that is connected to the vertical plane portion 15b on one side and to the vertical plane portion 15e on the other side. After the unvulcanized rubber plate 25 having a thickness of about 5 to 10 mm is disposed in the gap between the portion 15h and the vertical wall surface 5h of the middle mold 5b arranged to face the vertical wall surface 15h, the same as described above In the way Heat is obtained by such press-molding.

  The laminated rubber bearing 22a for inspection and the substantially L-shaped laminated rubber body 23a obtained by this manufacturing method are coated with a rubber elastic body having an unvulcanized rubber plate 25 vulcanized on the outer peripheral surface. Layer 26 is formed. Since the outer peripheral surface of the laminated rubber bearing 22a for inspection is covered with the coating layer 26, the outer peripheral edges of the unvulcanized rubber plate 9, the reinforcing plate 10, the lower connecting plate 8, and the upper connecting plate 12 during vulcanization molding. In addition to being able to reliably prevent adhesion failure that may occur in the portion, there is an effect that the shear deformation performance is not reduced due to damage to the cut surface due to the cutting operation.

  Also when the laminated rubber support 22a for inspection shown in FIG. 10 is manufactured, the substantially L-shaped laminated rubber body 15 and the partition plates 13 and 14 are arranged in the hollow portion 6, and the substantially L-shaped laminated rubber body 15 and the partition are separated. A rectangular hollow portion 6b may be formed with the plates 13 and 14, and the rectangular unvulcanized laminated rubber body 7 may be disposed in the hollow portion 6b.

  In each of the above manufacturing methods, the partition plates 13 and 14 that are easily separable as the partition member are used, but instead of this, one partition plate that is substantially L-shaped in plan view may be used. The rectangular unvulcanized laminated rubber body 7 may be disposed in the hollow portion 6 or the hollow portion 6b by using the rectangular unvulcanized laminated rubber body 7 separately prepared outside the hollow portion 6 or the hollow portion 6b. Instead of this, the lower connecting plate 8, the unvulcanized rubber plate 9, the reinforcing plate 10 and the upper connecting plate 12 may be sequentially laminated on the hollow portion 6 or the hollow portion 6b, and the substantially L-shaped laminated rubber. The arrangement of the body 15 in the hollow portion 6a or the hollow portion 6 may also be performed in the same manner as the arrangement of the rectangular unvulcanized laminated rubber body 7.

It is a partially notched perspective view which shows the manufacturing process in the manufacturing method of this invention. It is a partially notched perspective view which shows the manufacturing process in the manufacturing method of this invention. It is a partially notched perspective view which shows the manufacturing process in the manufacturing method of this invention. It is a perspective view which shows the manufacturing process in the manufacturing method of this invention. It is a VV arrow directional cross-sectional view of FIG. FIG. 5 is a plan view of FIG. 4. It is a perspective view which shows the laminated rubber bearing for a test | inspection obtained by the manufacturing method of this invention. It is a VIII-VIII arrow directional cross-sectional view of FIG. 9 which shows the manufacturing process in the other manufacturing method of this invention. It is a top view which shows the manufacturing process in the other manufacturing method of this invention. It is a perspective view which shows the laminated rubber bearing for a test | inspection obtained by the other manufacturing method of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mold 3 Upper mold 4 Lower mold 5a, 5b, 5c, 5d Middle mold 6, 6a Hollow part 7 Rectangular unvulcanized laminated rubber body 8, 16 Lower connection plate 9, 17 Unvulcanized rubber plate 10 , 18 Reinforcement plate 11, 19 Laminated body 12 Upper connecting plate 13, 14 Partition plate 15 Substantially L-shaped unvulcanized laminated rubber body 16, 20 Lower connecting plate

Claims (6)

A step of preparing a mold having an opening at the upper end surface and a rectangular hollow portion in plan view;
A rectangular laminated rubber body in a plan view having a laminate in which unvulcanized rubber plates and reinforcing plates are alternately laminated, and one adjacent vertical plane across one convex corner Placing the part in the hollow part so as to contact the vertical wall surface of the mold corresponding to the vertical plane part,
A substantially L-shaped partition member having a thermal conductivity equivalent to that of the unvulcanized rubber plate, one vertical plate surface of the other one of the diagonal positions of the one convex corner portion of the rectangular laminated rubber body. Placed in the hollow part of the mold in contact with each of the other adjacent vertical plane parts across one convex corner, and substantially L-shaped in the hollow part of the mold with the rectangular laminated rubber body and the partition member A step of forming a hollow portion of the shape,
A substantially L-shaped laminated rubber body having a substantially L-shape in a plan view having a laminated body in which unvulcanized rubber plates and reinforcing plates are alternately laminated, and the adjacent vertical portions on the outer side across the convex corner portion. The flat portion is brought into contact with the vertical wall surface of the mold corresponding to the outer vertical flat portion, and the inner adjacent vertical flat portions are brought into contact with the other vertical plate surface of the partition member with the concave corner portion interposed therebetween. Thus, the step of arranging in the remaining hollow portion of the substantially L shape,
A step of closing the mold opening, vulcanizing and molding the rectangular laminated rubber body and the substantially L-shaped laminated rubber body by pressurization and heating;
After vulcanization molding, disassembling the mold and partition member, obtaining a laminated rubber bearing for inspection consisting of a rectangular laminated rubber body,
A method for producing a laminated rubber bearing for inspection, comprising: A step of preparing a mold having an opening at the upper end surface and a rectangular hollow portion in plan view;
A substantially L-shaped laminated rubber body having a substantially L-shape in a plan view having a laminated body in which unvulcanized rubber plates and reinforcing plates are alternately laminated, and the adjacent vertical portions on the outer side across the convex corner portion. the flat portion so as Ru is abutted against the vertical wall of the mold that corresponds to the vertical plane portion of the outer, placing in the hollow portion,
A substantially L-shaped partition member having thermal conductivity equivalent to that of the unvulcanized rubber plate, one vertical plate surface of which is adjacent to each other on the inner side with the concave corner portion of the substantially L-shaped laminated rubber body interposed therebetween. A step of abutting against each of the parts and disposing in the hollow part of the mold, and forming a rectangular residual hollow part in a plan view in the hollow part of the mold with the substantially L-shaped laminated rubber body and the partition member; ,
A rectangular laminated rubber body in a plan view having a laminate in which unvulcanized rubber plates and reinforcing plates are alternately laminated, and one adjacent vertical plane across one convex corner And the other vertical plane part on the other side across the other convex corner part of the diagonal position of the one convex corner part. A step of placing in the hollow portion of the square-shaped residual, so as to contact the adjacent vertical plane portions on the inner side across the concave corner portion of the partition member;
A step of closing the mold opening, vulcanizing and molding the rectangular laminated rubber body and the substantially L-shaped laminated rubber body by pressurization and heating;
After vulcanization molding, disassembling the mold and partition member, obtaining a laminated rubber bearing for inspection consisting of a rectangular laminated rubber body,
A method for producing a laminated rubber bearing for inspection, comprising: A step of preparing a mold having an opening at the upper end surface and a rectangular hollow portion in plan view;
In a plan view in which unvulcanized rubber plates and reinforcing plates are alternately stacked, a rectangular laminated rubber body having a rectangular shape is sandwiched between one vertical corner portion of the rectangular laminated rubber body, A face-to-face arrangement with a gap on the vertical wall surface of the mold corresponding to the flat part, and the arrangement in the hollow part;
A substantially L-shaped partition member having a thermal conductivity equivalent to that of the unvulcanized rubber plate, one vertical plate surface of the other one of the diagonal positions of the one convex corner portion of the rectangular laminated rubber body. Two convex corners are sandwiched between the other adjacent vertical flat surfaces with a gap and placed in the hollow portion of the mold, and the rectangular laminated rubber body and the partition member are substantially placed in the hollow portion of the mold. Forming an L-shaped remaining hollow portion;
A substantially L-shaped laminated rubber body having a substantially L-shape in a plan view having a laminated body in which unvulcanized rubber plates and reinforcing plates are alternately laminated, and the adjacent vertical portions on the outer side across the convex corner portion. The plane part is arranged facing the vertical wall surface of the mold corresponding to the outer vertical plane part, and the adjacent vertical plane parts on the inner side across the concave corner part are arranged facing the other vertical plate surface of the partition member. A step of arranging the remaining L-shaped hollow portion,
Disposing an unvulcanized rubber plate in each of the gaps;
A step of closing the opening of the mold, and vulcanizing and molding each of a rectangular laminated rubber body, a substantially L-shaped laminated rubber body and a gap between the unvulcanized rubber plates by pressurization and heating;
After vulcanization molding, disassembling the mold and partition member, obtaining a laminated rubber bearing for inspection consisting of a rectangular laminated rubber body having a rubber coating layer on the outer peripheral surface;
A method for producing a laminated rubber bearing for inspection, comprising: A step of preparing a mold having an opening at the upper end surface and a rectangular hollow portion in plan view;
A substantially L-shaped laminated rubber body having a substantially L-shape in a plan view having a laminated body in which unvulcanized rubber plates and reinforcing plates are alternately laminated, and the adjacent vertical portions on the outer side across the convex corner portion. A step of arranging the plane portion in the hollow portion so as to face the vertical wall surface of the mold corresponding to the outer vertical plane portion; and
A substantially L-shaped partition member having thermal conductivity equivalent to that of the unvulcanized rubber plate, one vertical plate surface of which is adjacent to each other on the inner side with the concave corner portion of the substantially L-shaped laminated rubber body interposed therebetween. Forming a rectangular residual hollow part in a plan view in the hollow part of the mold with a substantially L-shaped laminated rubber body and a partition member, and facing each of the parts to be disposed in the hollow part of the mold. ,
A rectangular laminated rubber body in a plan view having a laminate in which unvulcanized rubber plates and reinforcing plates are alternately laminated, and one adjacent vertical plane across one convex corner Are arranged on the vertical wall surface of the mold corresponding to the vertical plane portion with a gap, and the other adjacent vertical plane across the other convex corner portion of the diagonal position of the one convex corner portion part of the as Ru is faced arranged with a gap in a vertical plane portion adjacent the inner phase across the re-entrant portion of the partition member, placing in the hollow portion remaining of rectangular shape,
Disposing an unvulcanized rubber plate in each of the gaps;
A step of closing the opening of the mold, and vulcanizing and molding each of a rectangular laminated rubber body, a substantially L-shaped laminated rubber body and a gap between the unvulcanized rubber plates by pressurization and heating;
After vulcanization molding, disassembling the mold and partition member, obtaining a laminated rubber bearing for inspection consisting of a rectangular laminated rubber body having a rubber coating layer on the outer peripheral surface;
A method for producing a laminated rubber bearing for inspection, comprising:   The method for manufacturing a laminated rubber bearing for inspection according to any one of claims 1 to 4, wherein the partition member is made of a phenol resin.   The partition member includes a plurality of through holes extending from one vertical plate surface to the other vertical plate surface and penetrating in a thickness direction thereof. Manufacturing method of laminated rubber bearing for inspection.

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