JP2011038319A - Method for manufacturing integrally-vulcanized track pad with steel plate or synthetic resin plate, and the track pad with grooves on both sides - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing an integrally-vulcanized track pad with a steel plate or a synthetic resin plate, which prevents a rubber pad body and the steel plate or the synthetic resin plate, joined together, from being separated from each other and which enables the sliding of a rail in the expansion/contraction of the rail; and to provide the track pad with grooves on both sides. <P>SOLUTION: This method for manufacturing the track pad includes: a step of infilling a rubber material with a length of 2 m into one mold 11 having a lower groove forming protrusion 15 formed on a bottom; a step of setting upper groove forming rod members 23 and 33 in the predetermined position of the one mold; a step of placing the thin plate-like steel plate 5 or the synthetic resin plate, coated with an adhesive, on the top surface of the infilled rubber material; a step of integrating the rubber pad body 2 with the steel plate 5 or the synthetic resin plate by applying predetermined pressure and predetermined temperature and performing vulcanized compression molding, after combining one mold and the other mold 12 together; a step of pulling out the upper groove forming rod member from the one mold after a lapse of predetermined time; and a step of taking out the integrated integrally-vulcanized track pad 1 with the steel plate or the synthetic resin plate by opening the other mold. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a method for manufacturing an integrated vulcanized track pad with a steel plate or a synthetic resin plate laid between a rail and a sleeper in a railroad track, and a double-sided grooved track pad. More specifically, the integrated rubber pad body and the steel plate or synthetic resin plate do not easily peel off, and the rail can be slid on the upper surface when the rail expands and contracts. And a double-sided grooved track pad.

  The track pad is laid under the rail in order to prevent vibration of the rail during traveling of the railway vehicle, noise caused by the vibration, and the like. Since this track pad is repeatedly subjected to compressive force and used outdoors, rubber or the like, which is a material having high durability and weather resistance, is often used.

  Also, many rubber track pads have grooves or the like formed on one or both sides in order to lower or equalize the spring constant. On the other hand, since the rail expands and contracts with changes in temperature such as the temperature, a steel plate (for example, stainless steel plate) or a synthetic resin plate with excellent corrosion resistance is attached to the upper surface of the track pad, and the rail is slid on the upper surface of the track pad. It is also done. This is to prevent damage due to abrasion on the upper surface of the track pad.

  At present, such a track pad has been manufactured by the following method. First, a rubber pad portion (rubber pad body) is manufactured by vulcanization molding using a mold. Thereafter, a steel plate or a synthetic resin plate excellent in corrosion resistance was bonded to the rubber pad body which is the rubber pad portion.

  However, the current track pad has a problem that the adhesive force between the rubber pad body and the steel plate or the synthetic resin plate is reduced, and both of them are peeled off from the bonded portion and separated and separated in some cases.

  Accordingly, various techniques have been proposed for preventing the steel plate and the rubber plate from separating and separating even if the bonded portion between the steel plate and the rubber plate is peeled off. That is, a technique relating to a track pad with a steel plate in which both ends of the steel plate are bent so that the steel plate and the rubber plate are not separated and the front and rear ends of the rubber plate are sandwiched is known (for example, Patent Document 1, 2).

  In addition, as a solution to the problem that occurs in the track pad with steel plate, it is composed of a substrate portion formed of soft rubber and a surface layer plate portion formed of hard rubber and having a hardness of A98Hs or more. A technique related to a track pad integrally formed by vulcanization is known (for example, see Patent Document 3). Furthermore, there is also known a technique related to an anti-vibration pad configured by inserting a synthetic resin plate on an anti-vibration rubber plate in which a plurality of grooves are formed on both upper and lower surfaces, and fitting it into a metal box-shaped cover. (For example, see Patent Document 4).

JP 2004-044113 A Japanese Patent No. 3802679 JP 2006-265841 A Japanese Patent Laid-Open No. 08-014326

  However, the technology of Patent Documents 1 and 2 is not a technology for preventing the rubber plate and the steel plate from peeling off, and does not separate and separate even when the rubber plate and the steel plate are peeled off. It's just a thing. Furthermore, since the bent portion is formed on the steel plate and the rubber plate is sandwiched, the work of folding and sandwiching the conventional raceway pad at the time of manufacture increases, resulting in a decrease in productivity and an increase in manufacturing cost. In the technique of Patent Document 4, the vibration-proof rubber plate and the synthetic resin plate are simply overlapped. In addition to the increase in the number of metal box-shaped covers that fit the stack, it is necessary to assemble the stack of anti-vibration rubber plates and synthetic resin plates in the box at the place where the anti-vibration pads are installed. It was something. Therefore, the thing of patent document 4 also had the problem that the work time for installation increased in the vibration-proof pad installation place, and the installation cost increased. Since such anti-vibration pads are used in large quantities, even with a slight increase in cost, the economic burden is large.

  On the other hand, in order to reduce the spring constant, the track pad is often used in which a plurality of grooves are formed on both upper and lower surfaces of a rubber pad body. However, the technique of Patent Document 3 has a problem in that the concave portion formed in the substrate portion is formed only on one side and a predetermined spring constant may not be obtained. That is, the track pad of Patent Document 3 has no description regarding providing a recess on the surface layer plate portion side of the substrate portion.

  In addition, the track pad that is integrated by bonding the rubber pad body and the steel plate, if the groove is formed on the side to be bonded to the steel plate, the bonding area of the rubber pad body is reduced, and the predetermined adhesive strength May not be obtained. Furthermore, when the adhesive is applied, if the adhesive enters the groove, the adhesive is fixed in the groove and a predetermined spring constant may not be obtained. That is, there is a problem that the effect of forming the groove on the steel plate side of the rubber pad body may be reduced.

Therefore, in a track pad that integrates steel plates and the like with grooves formed on both upper and lower surfaces, the rubber pad body and the steel plate or synthetic resin plate are prevented from peeling off, and such a track pad that does not peel off is productivity. There has been a demand for the development of technology that can be manufactured well.
The present invention has been made to solve these problems of the prior art, and achieves the following object.

An object of the present invention is to integrally bond a rubber pad body and a steel plate or a synthetic resin plate so that the rubber pad body and the steel plate or the synthetic resin plate do not easily peel off. It is an object of the present invention to provide a track pad manufacturing method and a double-sided grooved track pad.
Another object of the present invention is to provide an integrated vulcanized track pad with a steel plate or synthetic resin plate that can always obtain a predetermined spring constant without allowing an adhesive or rubber to flow into a groove formed in a rubber pad body. And a double-sided grooved track pad.

The present invention takes the following means in order to achieve the object.
The method of manufacturing the integrally vulcanized track pad with steel plate or synthetic resin plate according to the first aspect of the present invention is a box-like method in which a concave space is formed in the track pad manufacturing method laid under the rail bottom of the track. A step of filling a rubber material in one mold having a lower groove forming portion provided on the bottom side of the inside, and an upper side of the one mold provided to be detachable from the one mold A step of setting the upper groove forming rod member at a predetermined position of the one mold, and a thin steel plate or a synthetic resin plate coated with an adhesive on the top surface of the filled rubber material. After the placing step and combining the one mold with the other mold, the one mold and the other mold are pressurized to a predetermined pressure and heated to a predetermined temperature, and the rubber While the material is vulcanized and compression molded, the rubber material is vulcanized and compressed. A step of integrally bonding the rubber pad body and the steel plate or the synthetic resin plate, a step of pulling out the upper groove forming rod member from the one mold after a predetermined time, and the one The other mold is opened with respect to the mold, and the rubber pad body and the steel plate or the synthetic resin plate are integrated with each other and a steel plate or synthetic resin plate-attached integrated vulcanization track pad is taken out.

  The method of manufacturing the integrally vulcanized track pad with steel plate or synthetic resin plate according to the second aspect of the present invention is the method of manufacturing a track pad laid below the rail bottom of the track, and the bottom of one mold in which a concave space is formed. And a step of placing a thin plate-like first steel plate or first synthetic resin plate, and a lower groove at a predetermined position on the upper side of the first steel plate or first synthetic resin plate of the one mold. A step of setting a forming rod member, a step of applying an adhesive to the first steel plate or the first synthetic resin plate, a step of filling a rubber material into the one mold, and the one of the molds A step of setting an upper groove forming rod member provided on the upper side of the mold so as to be detachable with respect to the one mold at a predetermined position of the one mold, and the filled rubber material A thin plate-like second steel plate or second synthetic resin plate coated with an adhesive on the upper surface thereof After the placing step and combining the one mold with the other mold, the one mold and the other mold are pressurized to a predetermined pressure and heated to a predetermined temperature, and the rubber A rubber pad body in which the rubber material is vulcanized and compression molded, the first steel plate or the first synthetic resin plate, and the second steel plate or the second A step of integrally joining the synthetic resin plates, a step of pulling out the upper groove forming bar member and the lower groove forming bar member from the one mold after a predetermined time, and the one mold The other mold is opened, and the rubber pad body, the first steel plate or the first synthetic resin plate, and the second steel plate or the second synthetic resin plate are integrated with each other. It consists of the process of taking out the integrated vulcanizing track pad with resin plate. .

  The manufacturing method of the steel plate or synthetic resin plate-integrated vulcanizing track pad of the present invention 3 is characterized in that, in the present invention 1 or 2, the pulling-out step is a step of pulling out with a driving force of a fluid pressure jack or a fluid pressure cylinder. To do.

  The double-sided grooved track pad of the present invention 4 is a double-sided grooved track pad manufactured by the manufacturing method described in the present invention 1, wherein one surface on the rail bottom side side and the one surface It consists of a rubber pad body having a predetermined number of grooves formed on the other surface, which is the opposite surface, and a thin steel plate or synthetic resin plate joined to one surface of the rubber pad body. It is characterized by.

  The double-sided grooved track pad of the present invention 5 is a double-sided grooved track pad manufactured by the manufacturing method described in the present invention 2, wherein one surface on the rail bottom side side and the one surface A rubber pad body in which a predetermined number of grooves are formed on the other surface, which is the opposite surface, and a thin plate-like first steel plate or first composite bonded to one surface of the rubber pad body It consists of a resin plate and a thin plate-like second steel plate or second synthetic resin plate joined to the other surface of the rubber pad body.

  In the double-sided grooved track pad manufactured by the manufacturing method of the present invention, the rubber pad body and the steel plate or the synthetic resin plate are not separated or separated. That is, using the heat and pressure at the time of vulcanization compression molding of the rubber pad body, the steel plate or synthetic resin plate is joined together by vulcanization compression molding while leaving the groove shape on one surface of the rubber pad body. Therefore, it was possible to have sufficient adhesive strength. Further, since no adhesive or rubber flows into the upper groove formed in the rubber pad body, a predetermined spring constant can always be obtained.

  The rubber pad body is capable of forming upper and lower grooves on both the upper and lower surfaces despite the provision of steel plates or synthetic resin plates for sliding rails, and a double-sided grooved track with a low spring constant. The pad could be manufactured.

  In addition, the manufacturing method of the integrally vulcanized track pad with steel plate or synthetic resin plate according to the present invention is a manufacturing method in which a rubber pad body and a steel plate or synthetic resin plate are integrally joined in a process of vulcanization compression molding in a mold apparatus. Because of the method, productivity can be improved and manufacturing costs can be reduced. Furthermore, since a bending portion or the like is provided on a steel plate or the like as in the prior art and the operation of bending the bending portion is unnecessary, the manufacturing is easy and the productivity is not reduced.

FIG. 1 is a front view showing a double-sided grooved track pad of the present invention. FIG. 2 is a plan view of a double-sided grooved track pad. FIG. 3 is an explanatory view showing an outline of an apparatus for manufacturing a double-sided grooved track pad. FIG. 4 is a diagram for explaining the steps of the method for producing an integrated vulcanizing track pad with steel plate or synthetic resin plate according to the present invention, and is an explanatory diagram showing a state in which a lower mold is filled with a rubber material. FIG. 5 is a diagram for explaining the steps of the method for producing the integrated vulcanizing track pad with steel plate or synthetic resin plate, and is an explanatory diagram showing a state in which the upper groove forming bar member is set in the lower mold. FIG. 6 is a diagram for explaining the steps of the method for producing an integrally vulcanized track pad with steel plate or synthetic resin plate, and a mold for vulcanization compression molding of a rubber pad body and a steel plate or synthetic resin plate. It is explanatory drawing which shows the state of an apparatus. FIG. 7 is a view for explaining the steps of the method for producing the integrated vulcanizing track pad with steel plate or synthetic resin plate, and is an explanatory view showing a state in which the upper groove forming bar member is pulled out from the mold apparatus. FIG. 8 is a front view showing another embodiment of the double-sided grooved track pad.

  Hereinafter, the manufacturing method of the steel plate of this invention or the synthetic | combination resin board integrated vulcanization track pad and embodiment of the double-sided grooved track pad are described in detail based on drawings.

  FIG. 1 is a front view showing a double-sided grooved track pad (hereinafter referred to as track pad) manufactured by the method for manufacturing an integrally vulcanized track pad with steel plate or synthetic resin plate of the present invention, and FIG. 2 is a plan view of the track pad. FIG. FIG. 3 is an explanatory diagram showing an outline of a track pad manufacturing apparatus. 4 to 7 are explanatory views of a mold apparatus for explaining each step of a manufacturing method (hereinafter referred to as a manufacturing method of a track pad) of an integrated vulcanized track pad with a steel plate or a synthetic resin plate according to the present invention. FIG. 4 is an explanatory view showing a state where the rubber material is filled in the lower mold, FIG. 5 is an explanatory view showing a state where the upper groove forming bar member is set in the lower mold, and FIG. 6 is a rubber pad body. And FIG. 7 is an explanatory view showing a state in which the upper groove forming bar member is pulled out from the mold apparatus.

  The track pad 1 is laid between the rail R of the railroad track and a sleeper (not shown). The rail pad 1 prevents vibration of the rail during traveling of the railway vehicle, prevents noise caused by the vibration, etc. Is intended. The track pad 1 will be described with reference to FIGS.

  The track pad 1 has an upper surface (one surface) 2a of a rubber pad body (hereinafter referred to as a pad body) 2 and a lower surface 5b of a steel plate (for example, stainless steel plate) 5 having excellent corrosion resistance. (Sulfur adhesive). A plurality of upper grooves 3a and lower grooves 3b are formed linearly on the upper surface 2a and the lower surface (the other surface) 2b of the pad body 2, respectively. In this embodiment, the upper groove 3a and the lower groove 3b are grooves having a substantially rectangular cross section, and four upper grooves 3a are formed on the upper surface 2a side, and five lower grooves 3b are formed on the lower surface 2b side. The upper groove 3a and the lower groove 3b are formed in a direction parallel to the longitudinal direction of the rail R.

  The upper surface 5a of the steel plate 5 is in contact with the bottom portion Ra of the rail R, and the lower surface 2b of the pad body 2 is located on the sleeper side. When the rail R expands and contracts in the longitudinal direction of the rail R due to a temperature change such as the outside air temperature, the rail R can slide on the upper surface 5 a of the track pad 1. The track pad 1 has a predetermined size (for example, 143 mm * 180 to 200 mm in plan view). The pad body 2 is made of a rubber material such as natural rubber or styrene butadiene rubber (SBR), and has a predetermined thickness (for example, 8 to 12 mm). On the other hand, the steel plate 5 having excellent corrosion resistance is a thin plate (for example, a thickness of 1.5 mm). As for the steel plate 5, at least the lower surface 5b joined to the pad body 2 is degreased.

The pad body 2 of the track pad 1 is formed with four linear upper grooves 3a on the upper surface 2a side and five linear lower grooves 3b on the lower surface 2b side. The pad body 2 preferably has a predetermined elasticity (for example, a shear elastic modulus G6 to 12 Kg / cm ² ). In addition, what is joined to the pad body 2 is not limited to a steel plate, and may be a thin plate-like synthetic resin plate (for example, nylon 6, nylon 66, polypropylene plate).

Based on FIG. 3, the manufacturing apparatus M of the track pad 1 will be described.
A mold apparatus 10 for vulcanization compression molding (hereinafter referred to as vulcanization molding) of the track pad 1 includes one mold (lower mold) 11 and the other mold (upper mold) 12 (FIG. 6, 7). The lower die 11 is a box-like shape having a concave space formed therein, and when combined with the upper die 12, the inner concave space forms a cavity for filling the rubber material 2m. On the upper surface side of the side wall portion of the lower mold 11, a predetermined number of groove portions 16, 16 for determining and setting positions of upper groove forming rod members 23, 33 to be described later are formed at predetermined positions. A predetermined number (5 in this embodiment) of lower groove forming protrusions 15 are formed on the bottom inside the lower mold 11. The cross-sectional shape of the lower groove forming convex portion 15 is substantially rectangular, and corresponds to the groove shape of the lower groove 3 b of the track pad 1. The upper mold 12 serves as a lid for the concave space of the lower mold 11.

  On the sides of the lower mold 11 and the upper mold 12, a first upper groove forming means 20 and a second upper groove forming means 30 are provided. The first upper groove forming means 20 includes a hydraulic jack 21 that is a hydraulic pressure jack, a side plate 22 provided at the tip of a rod 21a of the hydraulic jack 21, and a side plate 22 that is fixed to the lower plate 11 and is upper when set to the lower mold 11 An upper groove forming bar member (hereinafter referred to as a bar member) 23 for forming the groove 3a is formed. The cross-sectional shape of the rod member 23 is substantially rectangular, and corresponds to the groove shape of the upper groove 3 a formed in the track pad 1. The hydraulic jack 21 is a drive source for pulling out the bar member 23 from the mold apparatus 10. The hydraulic jack 21 is fixed to the base body of the manufacturing apparatus M via the stay 28 when the rod member 23 is pulled out.

  Similarly, the second upper groove forming means 30 is fixed to the hydraulic plate 31, which is a hydraulic pressure jack, the side plate 32 provided at the tip of the rod 31 a of the hydraulic jack 31, and the side plate 32, and is set on the lower mold 11. And an upper groove forming bar member (hereinafter referred to as a bar member) 33 for forming the upper groove 3a. The cross-sectional shape of the bar member 33 corresponds to the groove shape of the upper groove 3 a formed in the track pad 1. The hydraulic jack 31 is a drive source for pulling out the bar member 33 from the mold apparatus 10. The hydraulic jack 31 is fixed to the base of the manufacturing apparatus M via the stay 38 when the rod member 33 is pulled out.

  In addition, what pulls out the rod members 23 and 33 is not limited to a hydraulic jack. A pneumatic jack, a fluid pressure cylinder (hydraulic cylinder, pneumatic cylinder, etc.), etc. may be used. Furthermore, the operator may perform the operation of pulling out the bar member manually.

Next, a method for manufacturing the track pad will be described with reference to FIGS.
A predetermined amount (for example, 103 to 107% of the internal volume) of the rubber material 2m is filled in the concave space inside the lower mold 11 (see FIG. 4). This rubber material 2m is sufficiently kneaded. The bar members 23 and 33 provided on the side plates 22 and 32 are set on the lower mold 11 with reference to the groove portions 16 and 16 as shown by a two-dot chain line in FIG. 3 (see FIG. 5). On the upper surface of the filled rubber material 2m, the steel plate 5 on which at least the lower surface 5b is degreased and coated with an adhesive (for example, an adhesive for vulcanization) is placed, and the upper mold 12 is placed thereon. (See FIG. 6).

  The lower mold 11 and the upper mold 12 were pressurized to a predetermined pressure (for example, 5 MPa), heated to a predetermined temperature (for example, 170 ° C.), and the rubber material 2m was vulcanized and molded. The pad body 2 and the steel plate 5 are integrated. After elapse of a predetermined time (for example, 10 to 15 minutes), the rod members 23 and 33 are pulled out from the lower mold 11 by the driving force of the hydraulic jacks 21 and 31 (see FIG. 7), and the upper mold 12 is opened. Then, the track pad 1 in which the pad body 2 and the steel plate 5 are integrally bonded is taken out from the lower mold 11.

  By doing so, the bonding strength between the pad body 2 and the steel plate 5 is reduced by the amount of bonding (adhesion) because the upper groove 3a is formed in the bonding portion, but the heat during vulcanization molding is reduced. Since it is bonded (adhered) using pressure, it has sufficient adhesive strength. That is, the pad body 2 and the steel plate 5 do not easily peel off. In addition, since the adhesive and the rubber material do not flow into the upper groove 3a and are vulcanized and integrally joined while maintaining the shape of the upper groove 3a, a predetermined spring constant is always obtained.

  Furthermore, since the steel plate 5 (or synthetic resin plate) is provided on the upper surface of the track pad 1, even if the rail R expands or contracts due to a temperature change such as the outside air temperature, the rail R is attached to the upper surface 5a of the track pad 1. Can slide.

[Other forms of track pads]
Another embodiment of the track pad will be described. FIG. 8 is a front view showing another embodiment of the track pad.
The track pad 1 described above is obtained by integrally bonding the steel plate 5 or the synthetic resin plate to the upper surface 2a of the pad body 2 in which the double-sided grooves are formed. However, as shown in FIG. 8, the track pad 51 is obtained by integrally bonding steel plates 5, 55 or a synthetic resin plate to the upper and lower surfaces of the pad body 2. That is, the steel plate 55 or the synthetic resin plate is also provided on the lower surface 2b side of the track pad 2 described above. In this case, the manufacturing apparatus may be provided with lower groove forming means having the same configuration as the first upper groove forming means 20 and the second upper groove forming means 30 described above. The side plates 22 and 32 may be provided with both the upper groove forming rod members 23 and 33 and the lower groove forming rod member.

A method for manufacturing the track pad 51 will be described.
A lower steel plate 55 having at least an upper surface degreased is placed on the bottom of the concave space inside the lower mold, and a lower groove forming rod member is set on the upper surface side of the lower steel plate 55. An adhesive is applied to the upper surface of the lower steel plate 55. Thereafter, as in the above-described embodiment, filling of the rubber material 2m, setting of the upper groove forming rod members 23, 33, placing of the steel plate 5 on which at least the lower surface has been degreased and coated with the adhesive, upper mold Is placed.

  The lower mold and the upper mold are pressurized to a predetermined pressure (for example, 5 MPa) and heated to a predetermined temperature (for example, 170 ° C.) to vulcanize and mold the rubber material, and the lower steel plate 55 and the vulcanized mold. The formed pad body 2 and the vulcanized pad body 2 and the steel plate 5 are integrated. After a predetermined time (for example, 10 to 15 minutes), the lower groove forming bar member and the upper groove forming bar members 23 and 33 are pulled out from the lower mold by the driving force of the hydraulic jack, and the upper mold is opened. Then, the track pad 51 in which the lower-side steel plate 55, the pad body 2, and the steel plate 5 are integrally joined is taken out from the lower mold.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment. Needless to say, changes can be made without departing from the scope and spirit of the present invention. For example, the groove shape is described as a groove having a substantially rectangular cross section, but other shapes may be used. Also, the number of grooves may be other numbers as long as a predetermined spring constant can be obtained. Further, the upper groove forming means and the lower groove forming means may be provided on either side. That is, in this form, one of the side plates may be provided with four upper groove forming rod members.

  In addition, the upper groove and the lower groove may not be parallel grooves, and the lower groove may be formed so as to have a predetermined angle with respect to the upper groove. For example, the upper groove and the lower groove may be formed in a direction orthogonal to each other.

1, 51 ... Track pad with groove on both sides (track pad)
2 ... Rubber pad body 3a ... Upper groove 3b ... Lower groove 5 ... Steel plate (stainless steel plate)
10 ... Mold 11 ... One mold (lower mold)
12 ... The other mold (upper mold)
DESCRIPTION OF SYMBOLS 15 ... Lower groove formation convex part 16 ... Groove part 20 ... 1st upper groove formation means 30 ... 2nd upper groove formation means 21, 31 ... Fluid pressure jack (hydraulic jack)
22, 32 ... side plates 23, 33 ... upper groove forming rod members

Claims (5)

In the manufacturing method of the track pad laid below the rail bottom of the track,
Filling a rubber material into one mold having a concave space formed therein and having a lower groove forming portion provided on the bottom side of the interior; and
A step of setting an upper groove forming rod member provided on the upper side of the one mold so as to be detachable with respect to the one mold at a predetermined position of the one mold;
A step of placing a thin steel plate or a synthetic resin plate coated with an adhesive on the top surface of the filled rubber material;
After the other mold is combined with the one mold, the one mold and the other mold are pressurized to a predetermined pressure and heated to a predetermined temperature to vulcanize and compress the rubber material. And a step of integrally joining the rubber pad body in which the rubber material is vulcanized and compression molded, and the steel plate or the synthetic resin plate,
After the predetermined time has elapsed, withdrawing the upper groove forming rod member from the one mold,
The other mold is opened with respect to the one mold, and the rubber pad body and the steel plate or the synthetic resin plate are integrated, and a steel plate or synthetic resin plate-integrated vulcanizing track pad with synthetic resin plate is taken out. Manufacturing method of integrated vulcanizing track pad with steel plate or synthetic resin plate. In the manufacturing method of the track pad laid below the rail bottom of the track,
Placing a thin plate-like first steel plate or first synthetic resin plate on the bottom of one mold in which a concave space is formed;
A step of setting a lower groove forming rod member at a predetermined position above the first steel plate or the first synthetic resin plate of the one mold;
Applying an adhesive to the first steel plate or the first synthetic resin plate;
Filling the one mold with a rubber material;
A step of setting an upper groove forming rod member provided on the upper side of the one mold so as to be detachable with respect to the one mold at a predetermined position of the one mold;
Placing a thin plate-shaped second steel plate or second synthetic resin plate coated with an adhesive on the top surface of the filled rubber material;
After the other mold is combined with the one mold, the one mold and the other mold are pressurized to a predetermined pressure and heated to a predetermined temperature to vulcanize and compress the rubber material. In addition, the rubber pad body in which the rubber material is vulcanized and compression molded, the first steel plate or the first synthetic resin plate, and the second steel plate or the second synthetic resin plate are integrated. Joining, and
After the predetermined time has elapsed, withdrawing the upper groove forming bar member and the lower groove forming bar member from the one mold,
The other mold is opened with respect to the one mold, the rubber pad body, the first steel plate or the first synthetic resin plate, and the second steel plate or the second synthetic resin. A method for producing an integrated vulcanizing track pad with a steel plate or a synthetic resin plate, comprising a step of taking out the integrated vulcanizing track pad with a steel plate or a synthetic resin plate integrated with a plate. In the manufacturing method of the integrated vulcanization track pad with a steel plate or a synthetic resin plate according to claim 1 or 2,
The drawing step is a step of drawing with a driving force of a fluid pressure jack or a fluid pressure cylinder. A double-sided grooved track pad manufactured by the manufacturing method according to claim 1,
A rubber pad body in which a predetermined number of grooves are formed on one surface on the rail bottom side and the other surface on the opposite side of the one surface;
A double-sided grooved track pad comprising a thin steel plate or a synthetic resin plate joined to one surface of the rubber pad body. A double-sided grooved track pad manufactured by the manufacturing method according to claim 2,
A rubber pad body in which a predetermined number of grooves are formed on one surface on the rail bottom side and the other surface on the opposite side of the one surface;
A thin plate-like first steel plate or first synthetic resin plate joined to one surface of the rubber pad body;
A double-sided grooved track pad comprising a thin plate-like second steel plate or a second synthetic resin plate joined to the other surface of the rubber pad body.

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