Sealants and methods for installing sealants

Abstract

To provide a seal material facilitating advancing / retreating of an abuttable advancing / retreating member, and capable of effectively preventing a foreign matter from invading for a long term.SOLUTION: A seal material is used for a machine tool including an advancing / retreating member capable of advancing / retreating between a closed area and the outside, is slidably abutted on a surface of the advancing / retreating member, and partitions between inside and outside of the closed area. The seal material comprises a plate-like base material resilient against a curvature in a thickness direction, and a fiber-made seal portion laminated on the base material. The fiber-made seal portion has a fiber surface comprising a fiber material, and the fiber surface is abutted on the surface of the advancing / retreating member.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a sealant and a method for applying the sealant. [Background technology]

[0002] For example, in machining equipment, liquids such as cutting oil, cutting fluid, and coolant are used during machining, and solid matter such as chips is generated. These foreign matter can cause electrical leakage and damage to the machine tool's motors, wiring, and other electrical devices, and can also wear out and damage the bearings in the drive mechanism. For this reason, the electrical devices and drive mechanisms of machine tools must be placed in sealed areas to prevent foreign matter from entering.

[0003] On the other hand, machine tools require an advancing / retreating member, such as an arm, that can advance / retreat from the sealed area to the outside for machining. Because a gap occurs between this advancing / retreating member and the wall surface that constitutes the sealed area, a sealant is provided that slidably abuts against the surface of the advancing / retreating member and separates the inside and outside of the sealed area. This sealant closes the gap and prevents foreign matter from entering the sealed area, i.e., the inside of the machine.

[0004] One known example of such a sealing material is one that includes a support member and a flat elastic member with an edge that comes into sliding contact with the sliding surface of a machine tool (see International Publication No. 2017 / 110275). The elastic member is made of rubber, which has excellent oil resistance. Among these, urethane is considered suitable because it is less likely to swell due to synthetic oils and has excellent abrasion resistance. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 2017 / 110275 Summary of the Invention [Problem to be solved by the invention]

[0006] However, when urethane is brought into sliding contact with the sliding surfaces of machine tools, it can undergo hydrolysis or oxidation degradation due to contact with liquids during processing, which can lead to the decomposition of the sealing material, so it must be replaced at relatively short intervals.

[0007] Furthermore, if the sliding surface is pressed too hard, the sliding resistance may become too high, making it difficult for the reciprocating member to move back and forth, while if the pressing force against the sliding surface is too weak, foreign matter may easily enter.

[0008] The present invention has been made based on the above-mentioned circumstances, and aims to provide a sealing material and an installation method for the sealing material that allows the abutting member to easily move forward and backward and can effectively prevent the intrusion of foreign matter for a long period of time. [Means for solving the problem]

[0009] A sealing material according to one aspect of the present invention is used in a machine tool equipped with a retractable member that can move forward and backward from an enclosed area to the outside, and is a sealing material that slidably abuts against the surface of the retractable member, separating the inside and outside of the enclosed area, and is provided with a plate-shaped substrate that is elastic with respect to bending in the thickness direction, and a fibrous sealing portion laminated to the substrate, and the fibrous sealing portion has a fibrous surface made of a fibrous material, and the fibrous surface abuts against the surface of the retractable member.

[0010] Another aspect of the present invention is a method for installing a sealing material, which is used in a machine tool equipped with an advancing / retracting member that can advance and retreat from a sealed area to the outside, and which slidably abuts against the surface of the advancing / retracting member, separating the inside and outside of the sealed area, wherein the sealing material is plate-shaped and comprises a base material that is elastic with respect to curvature in the thickness direction, and a fiber sealing portion laminated to the base material, and the fiber sealing portion has a fiber surface made of a fiber material, and the method includes an abutment step of abutting the fiber surface against the surface of the advancing / retracting member while curving the sealing material, a fixing step of fixing the sealing material, and an adjustment step of adjusting the amount of curvature of the sealing material after the abutment step. [Effects of the Invention]

[0011] The sealing material of the present invention allows the contacting member to easily move forward and backward, and can effectively prevent foreign matter from entering for a long period of time. Furthermore, by using the method for attaching the sealing material of the present invention, the sealing material can be brought into a state in which the contacting member can easily move forward and backward, and can effectively prevent foreign matter from entering for a long period of time. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a partial schematic diagram showing the configuration of a machine tool using a sealing material according to one embodiment of the present invention. [Figure 2] FIG. 2 is a schematic side view of a sealing material used in the machine tool of FIG. [Figure 3] FIG. 3 is a schematic enlarged partial cross-sectional view showing the vicinity of the sealing material in FIG. [Figure 4] FIG. 4 is a flow diagram showing steps of a method for attaching a sealing material according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] [Description of the embodiment of the present invention] First, embodiments of the present invention will be listed and described.

[0014] A sealing material according to one aspect of the present invention is used in a machine tool equipped with a retractable member that can move forward and backward from an enclosed area to the outside, and is a sealing material that slidably abuts against the surface of the retractable member, separating the inside and outside of the enclosed area, and is provided with a plate-shaped substrate that is elastic with respect to bending in the thickness direction, and a fibrous sealing portion laminated to the substrate, and the fibrous sealing portion has a fibrous surface made of a fibrous material, and the fibrous surface abuts against the surface of the retractable member.

[0015] The sealing material has a fibrous surface made of a fibrous material that abuts against the surface of the retractable member. The fibers of this fibrous surface of the sealing material can prevent foreign matter from entering the sealed area through the surface of the retractable member. The fibrous surface is resistant to scratches and tears even when directly hit by a foreign matter due to the cushioning properties of the fibers, maintaining its sealing properties. Furthermore, fibers are resistant to hydrolysis and oxidative degradation, so their quality is likely to be maintained over a long period of time. Furthermore, the fibers of the fibrous surface make point contact with the surface of the retractable member, resulting in lower friction than conventional sealing materials that make line or surface contact, and are less likely to impede the retractable member's movement. Therefore, the sealing material allows the retractable member to easily move forward and backward while effectively preventing the intrusion of foreign matter over a long period of time.

[0016] The fiber material is preferably a cut pile material, which is a high-density fiber, and by using the cut pile material as the fiber material in this way, it is possible to more effectively prevent the intrusion of foreign matter.

[0017] The density of the above fiber material is 500 threads / mm 2 Over 2000 lines / mm 2 The following is preferable: By setting the density of the fiber material within the above range, it is possible to more effectively prevent the intrusion of foreign matter while maintaining the ease of advancement and retreat of the contacting advance / retract member.

[0018] The pile fibers constituting the cut pile material may be made of polyester, polyamide, polytetrafluoroethylene, or a combination thereof. The inclusion of polyester or polyamide in the cut pile material increases the durability of the sealing material. Furthermore, the inclusion of polytetrafluoroethylene in the cut pile material reduces sliding resistance, further facilitating the advancement and retreat of the retractable member.

[0019] Another aspect of the present invention is a method for installing a sealing material, which is used in a machine tool equipped with an advancing / retracting member that can advance and retreat from a sealed area to the outside, and which slidably abuts against the surface of the advancing / retracting member, separating the inside and outside of the sealed area, wherein the sealing material is plate-shaped and comprises a base material that is elastic with respect to curvature in the thickness direction, and a fiber sealing portion laminated to the base material, and the fiber sealing portion has a fiber surface made of a fiber material, and the method includes an abutment step of abutting the fiber surface against the surface of the advancing / retracting member while curving the sealing material, a fixing step of fixing the sealing material, and an adjustment step of adjusting the amount of curvature of the sealing material after the abutment step.

[0020] In this method of attaching the sealant, the sealant is curved in the thickness direction of the base material, and the fiber surface is brought into contact with the surface of the retractable member. Therefore, the repulsive force of the elastic base material causes the fiber surface of the sealant to firmly contact the surface of the retractable member. Therefore, by using this method of attaching the sealant, the sealant of the present invention can be kept in a state where the retractable member can be easily moved forward and backward and can effectively prevent the intrusion of foreign matter for a long period of time.

[0021] In the contacting step, the sealing material may be curved from the inside to the outside of the sealed area. By curving the sealing material from the inside to the outside of the sealed area in this way, foreign matter is blocked outside the sealed area and the sealing material slides to push the foreign matter away. This makes it possible to more effectively prevent the intrusion of foreign matter.

[0022] In the contact step, the fiber material of the fiber seal portion may be inclined from the inside to the outside of the sealed area, thereby enhancing the effect of blocking foreign matter outside the sealed area.

[0023] [Details of the embodiment of the present invention] Hereinafter, a sealing material and a method for attaching a sealing material according to an embodiment of the present invention will be described with reference to the drawings as needed.

[0024] [Sealing material] As shown in FIG. 1, a sealing material 1 according to one embodiment of the present invention is used in a machine tool X.

[0025] <Machine tools> The machine tool X is equipped with an advancing / retreating member X2 that can advance / retreat from a sealed area X1 to the outside. The sealing material 1 slidably contacts a surface X21 of the advancing / retreating member X2, separating the inside and outside of the sealed area X1. Electrical devices such as motors and wiring, drive mechanisms, etc. are housed inside the sealed area X1.

[0026] A tool X3 for machining is attached to the tip of the advancing / retreating member X2. A part of the advancing / retreating member X2 is located inside the sealed area X1. In other words, the advancing / retreating member X2 penetrates the wall X11 that constitutes the sealed area X1. To enable the advancing / retreating member X2 to move from the sealed area X1 to the outside, a gap X12 is provided between the wall X11 and the surface X21 of the advancing / retreating member X2 (see, for example, FIG. 3). The sealing material 1 closes this gap X12.

[0027] The advancing / retracting member X2 shown in Fig. 1 has a rectangular cross section. Since the advancing / retracting member X2 has gaps X12 between each of the four surfaces X21 and the wall X11, four sealing materials 1 are provided for these four gaps X12. Each sealing material 1 is fixed to the outer surface of the wall X11 by a fixing device X4, for example, a screw.

[0028] 1 is merely an example. The cross section of the retractable member X2 may be polygonal. A sealant 1 may be provided for each surface X21 of the retractable member X2, or a single sealant 1 may be provided for a plurality of adjacent surfaces X21. When a plurality of sealants are provided, it is preferable that all of the sealants be the sealant 1 of the present invention, but this does not preclude the use of a combination of the sealant 1 of the present invention and other types of sealants.

[0029] <Sealing material> As shown in FIGS. 2 and 3, the sealing material 1 includes a substrate 10 and a fiber sealing portion 20.

[0030] (base material) The substrate 10 is plate-shaped and has elasticity against bending in the thickness direction.

[0031] The substrate 10 may be a thin metal plate such as SUS or brass, or a resin film such as a polyethylene terephthalate (PET) film.

[0032] When the substrate 10 is a metal foil plate, the lower limit of the average thickness of the substrate 10 is preferably 0.03 mm, more preferably 0.05 mm. Meanwhile, the upper limit of the average thickness of the substrate 10 is preferably 0.3 mm, more preferably 0.2 mm. Furthermore, when the substrate 10 is a resin film, the lower limit of the average thickness of the substrate 10 is preferably 0.05 mm, more preferably 0.1 mm. Meanwhile, the upper limit of the average thickness of the substrate 10 is preferably 1.0 mm, more preferably 0.7 mm, and even more preferably 0.5 mm. If the average thickness of the substrate 10 is less than the lower limit, the elastic force may be insufficient, and the fibrous surface 21 (described later) may not sufficiently contact the surface X21 of the advancing / retracting member X2. Conversely, if the average thickness of the substrate 10 exceeds the upper limit, the elastic force may be too strong, making the sealing material 1 difficult to handle. The term "average thickness" refers to the average value of thicknesses measured at 10 arbitrary points excluding intentionally provided uneven portions. The same applies hereinafter to "average" of length, etc.

[0033] The planar shape of the substrate 10 is determined appropriately depending on the shape of the surface X21 of the advancing / retracting member X2 with which the sealing material 1 abuts. For example, as shown in FIG. 1 , when the sealing material 1 abuts against the surface X21 of one of the advancing / retracting members X2 and this surface X21 is flat, the planar shape of the substrate 10 can be rectangular. In this case, of the four sides of the substrate 10, the lengths of the side abutting against the surface X21 of the advancing / retracting member X2 and the opposite side are preferably equal to the width of the surface X21 of the advancing / retracting member X2. Meanwhile, the lengths of the other two opposing sides of the substrate 10 are determined to be such that the sealing material 1 can be curved to abut the fiber surface 21 against the surface X21 of the advancing / retracting member X2 while being fixed to the wall X11 that constitutes the sealed region X1, as shown in FIG. 3 , and are, for example, 20 mm to 50 mm.

[0034] (Fabric seal) The textile sealing part 20 is laminated on one side of the substrate 10. The method for laminating the textile sealing part 20 on the substrate 10 is not particularly limited, but the textile sealing part 20 can be fixed to the substrate 10 with, for example, a hot melt adhesive or double-sided tape.

[0035] The textile seal portion 20 has a textile surface 21 made of a textile material, and the textile surface 21 abuts against the surface X21 of the advancing / retreating member X2.

[0036] The fiber surface 21 can be made of woven or knitted fabric. The fiber material can be nonwoven fabric, cut pile material, or the like.

[0037] The preferred fiber material is cut pile material. Cut pile material is a fiber material made by cutting and raising the tips of pile fibers that are raised from the ground yarn fixed to the surface of the base and then extending outward from the base. Because the tips of cut pile material are cut and raised, the fibers spread radially toward the tips. Because the fibers spread in this way and there are no gaps, it is difficult for small foreign objects to get inside, making it even more effective at preventing the intrusion of foreign objects.

[0038] The base can be made of metal, resin, or a combination of metal and resin. By using a metal, resin, or a combination of metal and resin for the base, it can be bent appropriately to fit the shape of the surface X21 of the advancing / retreating member X2, making it easy to achieve good adhesion and a stable base. Examples of metals that can be used include iron (carbon tool steel (SK material), etc.), brass, and stainless steel. Furthermore, when the base is made of resin, general-purpose plastics such as vinyl chloride, polypropylene, and ABS resin can be used. Such plastic resins are lightweight, have little restriction on movement, and are resistant to excessive heat and force transfer, making them highly durable. For example, a hot-melt adhesive can be used to secure the base to the ground yarn.

[0039] When the cut pile material is based on knitted fabric, polyester fiber or the like can be used as the ground yarn, and when the cut pile material is based on woven fabric, polyamide, acrylic fiber or the like can be used as the ground yarn.

[0040] The pile fibers constituting the cut pile material may be made of polyester, polyamide, rayon, acrylic, cotton, polytetrafluoroethylene (PTFE), perfluoroalkoxyalkane (PFA), berima, or the like.

[0041] In particular, it is preferable that the pile fiber material contains polyester, polyamide, polytetrafluoroethylene, or a combination thereof. When polyester and polyamide are used, durability can be improved. Furthermore, strength is less likely to decrease even when wet with liquids used during processing, such as cutting oil, cutting fluid, and coolant. Furthermore, polyester is heat-resistant, while polyamide is highly resistant to friction and bending. When polytetrafluoroethylene is used, sliding resistance can be reduced, further facilitating the advancement and retreat of the retractable member X2. It also has excellent heat resistance.

[0042] In particular, a combination of polyester and polytetrafluoroethylene is recommended as the pile fiber material. This prevents an increase in the manufacturing cost of the cut pile material, allows the contacting advancing and retreating member X2 to move easily, and effectively prevents the intrusion of foreign matter for a long period of time. When combining polyester and polytetrafluoroethylene, the mass ratio between them is preferably 1:1 or more and 3:1 or less.

[0043] The lower limit of the density of the above fiber material, i.e., pile fiber, is 500 fibers / mm 2 is preferable, and 1000 lines / mm 2 is more preferable, and 1200 lines / mm 2 On the other hand, the upper limit of the density of the fiber material is 2000 fibers / mm 2 is preferable, and 1500 lines / mm 2 is more preferable, and 1400 lines / mm 2 If the density of the fiber material is less than the lower limit, it may not be possible to effectively prevent the intrusion of foreign matter. Conversely, if the density of the fiber material is greater than the upper limit, it may hinder the advancement and retreat of the retractable member X2.

[0044] The diameter of the pile fibers is preferably 5 μm or more and 20 μm or less.

[0045] The lower limit of the average thickness of the textile sealing portion 20 is preferably 1 mm, more preferably 2 mm. On the other hand, the upper limit of the average thickness of the textile sealing portion 20 is preferably 10 mm, more preferably 7 mm. If the average thickness of the textile sealing portion 20 is less than the lower limit, the textile surface 21 may not be pressed sufficiently against the surface X21 of the advancing / retreating member X2. Conversely, if the average thickness of the textile sealing portion 20 exceeds the upper limit, the amount of deformation of the textile sealing portion 20 may become too great, and the intrusion of foreign matter may not be effectively prevented.

[0046] The average width of the fiber surface 21 (the average length in the direction perpendicular to the advancing / retracting direction of the advancing / retracting member X2) is preferably equal to the width of the surface X21 of the advancing / retracting member X2. If the width of the fiber surface 21 is less than the width of the surface X21 of the advancing / retracting member X2, there is a risk that foreign matter may enter the sealed area X1 of the machine tool X from the part of the surface X21 of the advancing / retracting member X2 that is not covered by the fiber surface 21.

[0047] The lower limit of the average length of the fibrous surface 21 (the average length in the advancing / retracting direction of the advancing / retracting member X2) is preferably 1 mm, more preferably 2 mm. On the other hand, the upper limit of the average length of the fibrous surface 21 is preferably 15 mm, more preferably 10 mm, and even more preferably 5 mm. If the average length of the fibrous surface 21 is below the lower limit, there is a risk that the intrusion of foreign matter will not be sufficiently prevented. Conversely, if the average length of the fibrous surface 21 exceeds the upper limit, there is a risk that the improvement in the effect of preventing the intrusion of foreign matter will be insufficient compared to the adverse effect of an increased contact area and increased frictional force.

[0048] Due to the characteristics of the fibers, when the fiber surface 21 is pressed against the surface X21 of the advancing / retracting member X2, it adheres closely to the surface X21. By adjusting the degree of this adhesion, even extremely fine powder fluids with a diameter of less than 5 μm can be adequately sealed. The lower limit of the amount of pressing of the fiber surface 21 against the surface X21 of the advancing / retracting member X2 is preferably 0.1 mm, more preferably 0.5 mm. On the other hand, the upper limit of the pressing amount is preferably 3 mm, more preferably 2 mm, and even more preferably 1.5 mm. If the pressing amount is less than the lower limit, it may not be possible to adequately prevent the intrusion of foreign matter. Conversely, if the pressing amount exceeds the upper limit, the frictional force may increase, resulting in a decrease in sliding properties. The "pressing amount" is an amount expressed as (XY) where the distance between the surface of the substrate 10 and the fiber surface 21 before the sealing material 1 is pressed (corresponding to the average thickness of the fiber sealing portion 20) is X mm, and the distance between the surface of the substrate 10 and the surface X21 of the advancing / retracting member X2 when the sealing material 1 is pressed against the surface X21 of the advancing / retracting member X2 is Y mm.

[0049] <Advantages> The sealing material 1 has a fibrous surface 21 made of a fibrous material that abuts against the surface X21 of the advancing / retracting member X2. The fibers of the fibrous surface 21 of the sealing material 1 can prevent foreign matter from entering the sealed area X1 through the surface X21 of the advancing / retracting member X2. The cushioning properties of the fibers make the fibrous surface 21 resistant to scratches or tears even when directly colliding with a foreign matter, maintaining its sealing properties. Furthermore, fibers are resistant to hydrolysis and oxidative degradation, making it easy to maintain its quality over a long period of time. Furthermore, the fibers of the fibrous surface 21 make point contact with the surface X21 of the advancing / retracting member X2, resulting in lower friction than conventional sealing materials that make line or surface contact, and thus less likely to impede the advancing / retracting movement of the advancing / retracting member X2. Therefore, the sealing material 1 allows the advancing / retracting member X2 to move easily and can effectively prevent the intrusion of foreign matter over a long period of time.

[0050] [How to install the sealant] A method for installing a sealing material according to another embodiment of the present invention is used in a machine tool X having an advancing / retracting member X2 that can advance and retreat from a sealed area X1 to the outside, as shown in Fig. 1, and is a method for installing a sealing material 1 that slidably abuts against a surface X21 of the advancing / retracting member X2 and separates the inside and outside of the sealed area X1, i.e., the sealing material 1 of the present invention. As shown in Figs. 2 and 3, the sealing material 1 includes a plate-shaped substrate 10 that is elastic with respect to bending in the thickness direction, and a fiber sealing portion 20 laminated on the substrate 10, and the fiber sealing portion 20 has a fiber surface 21 made of a fiber material.

[0051] As shown in FIG. 4, the method for attaching the sealing material includes a contacting step S1, a fixing step S2, and an adjusting step S3.

[0052] <Abutting process> In the contacting step S1, the sealing material 1 is curved and the fiber surface 21 is brought into contact with the surface X21 of the advancing / retracting member X2.

[0053] Specifically, as shown in Fig. 3, the sealing material 1 is curved in a direction from the inside to the outside of the sealed area X1. In the example of Fig. 3, the angle between the outer surface of the wall X11 of the sealed area X1 and the surface X21 of the advancing / retracting member X2 is approximately 90 degrees, so the sealing material 1 is also curved by approximately 90 degrees to match this angle. The abutment surface where the fiber surface 21 abuts against the surface X21 of the advancing / retracting member X2 is provided outside the sealed area X1. In other words, the sealing material 1 is curved with the substrate 10 facing inward (the bending axis side) so that the fiber seal portion 20 of the sealing material 1 abuts against the outer surface of the wall X11 of the sealed area X1.

[0054] In this way, by bending the sealing material 1 from the inside to the outside of the sealed area X1 in the contact step S1, the sealing material 1 blocks foreign matter outside the sealed area X1 and slides to push the foreign matter away, thereby more effectively preventing the intrusion of foreign matter.

[0055] In the contact step S1, it is preferable to slant the fiber material of the fiber sealing portion 20 in a direction from the inside to the outside of the sealed area X1 (see FIG. 3). In this way, by slant-slanting the fiber material of the fiber sealing portion 20 in a direction from the inside to the outside of the sealed area X1 in the contact step S1, the effect of blocking foreign matter outside the sealed area X1 can be improved.

[0056] <Fixed process> In the fixing step S2, the sealing material 1 is fixed. That is, in the fixing step S2, the sealing material 1 is fixed to the machine tool X so that the fiber surface 21 of the fiber sealing portion 20 can be kept in slidable contact with the surface X21 of the advancing / retracting member X2.

[0057] 3, the sealing material 1 can be fixed to the outer surface of the wall X11 of the sealed area X1 using a fixing device X4. At this time, since the base material 10 has elasticity, the curved base material 10 can maintain the state in which the fiber surface 21 is pressed against the surface X21 of the advancing / retracting member X2 due to the elasticity with which the base material 10 returns to its original state.

[0058] <Adjustment process> In the adjusting step S3, the amount of curvature of the sealing material 1 is adjusted after the abutting step S1 and the fixing step S2.

[0059] The amount of curvature can be adjusted by adjusting the height at which the sealing material 1 is fixed. That is, when the fixing position of the sealing material 1 is lowered, the fiber surface 21 is pressed more strongly against the surface X21 of the advancing / retracting member X2, and conversely, when the fixing position of the sealing material 1 is raised, the pressing force of the fiber surface 21 against the surface X21 of the advancing / retracting member X2 decreases. It is advisable to adjust the pressing force of the fiber surface 21 against the surface X21 of the advancing / retracting member X2 to the desired force.

[0060] To adjust the height at which the sealing material 1 is fixed, for example, if the fixing device X4 is a screw, a screw hole is formed in the sealing material 1, and the screw hole can be elliptical with its major axis in the height direction. In this case, the sealing material 1 can be finely adjusted up and down by loosening the fastening device X4. After adjusting it to the desired position, it is recommended to tighten the fastening device X4. Note that this is just one example, and various methods for adjusting the fixing height are known, and any method can be used.

[0061] <Advantages> In this method of attaching the sealing material, the sealing material 1 is curved in the thickness direction of the substrate 10, and the fiber surface 21 is brought into contact with the surface X21 of the advancing / retracting member X2. Therefore, the repulsive force of the elastic substrate 10 causes the fiber surface 21 of the sealing material 1 to strongly contact the surface X21 of the advancing / retracting member X2. Therefore, by using this method of attaching the sealing material, the sealing material 1 of the present invention can be kept in a state in which the advancing / retracting member X2 can be easily moved forward and backward and can effectively prevent the intrusion of foreign matter for a long period of time.

[0062] [Other embodiments] The above-described embodiments do not limit the configuration of the present invention. Therefore, the above-described embodiments may include omissions, substitutions, or additions of components based on the description in this specification and common general technical knowledge, and all of these should be construed as falling within the scope of the present invention.

[0063] In the above embodiment, the sealing material is fixed to the machine tool using a fastener (screw), but the method of fixing to the machine tool is not limited to this. For example, it is also possible to fix it using an adhesive or the like.

[0064] In addition, in the above embodiment, the sealing material is described as being directly fixed to the wall that constitutes the sealed area, but the fixing point is not limited to the wall, and it can also be fixed, for example, by providing a dedicated fixing base.

[0065] In the above embodiment, a method for curving the sealing material from the inside to the outside of the sealed area has been described, but curving from the outside to the inside is not excluded. Also, while a case has been described in which the abutment surface where the fiber surface abuts against the surface of the advancing / retracting member is provided outside the sealed area, this does not exclude providing it inside the sealed area.

[0066] In the above embodiment, the sealant is curved at approximately 90 degrees. However, as long as the sealant is curved in a direction that exerts an elastic force pressing the fiber surface against the surface of the advancing / retracting member, this angle can vary depending on the position where the sealant is fixed. To obtain effective elastic force, the angle is preferably 30 degrees or greater. The upper limit of the angle is not particularly limited; it can be 180 degrees, i.e., the sealant can be folded back.

[0067] In the above embodiment, the method for attaching the sealing material has been described as a method in which the abutting step, fixing step, and adjusting step are performed in this order, but other orders can also be used. For example, the sealing material can be fixed first (fixing step), and then the height of the sealing material can be lowered and brought into contact (abutting step). In this case, the height of the sealing material can be adjusted (adjusting step) following the abutting step. It is also possible to adopt a method in which the height of the sealing material is adjusted first (adjusting step) and then the sealing material is fixed (fixing step). [Industrial Applicability]

[0068] As described above, the sealing material of the present invention allows the contacting member to easily move back and forth and can effectively prevent foreign matter from entering for a long period of time. Furthermore, by using the method for attaching the sealing material of the present invention, the sealing material can be brought into a state in which the contacting member can easily move back and forth and can effectively prevent foreign matter from entering for a long period of time. [Explanation of symbols]

[0069] 1. Sealing material 10 Base material 20 Fabric seal 21 Fiber Surface X machine tool X1 Enclosed area X11 wall X12 gap X2 Advance / retract member X21 surface X3 tools X4 Fixture

Claims

1. A sealing material used in a machine tool having an advancing / retreating member that can advance and retreat from an enclosed area to an outside, the sealing material slidably contacting a surface of the advancing / retreating member and separating the inside and outside of the enclosed area, a plate-shaped substrate having elasticity with respect to curvature in the thickness direction; a textile seal portion laminated on the base material; Equipped with The textile seal portion has a textile surface made of a textile material, A sealing material in which the fiber surface abuts against the surface of the advancing / retreating member due to the repulsive force of the base material caused by the curvature of the sealing material.

2. 2. The sealing material according to claim 1, wherein the fiber material is a cut pile material.

3. The density of the fiber material is 500 threads / mm ２ Over 2000 pieces / mm ２ The sealing material according to claim 2, wherein:

4. 4. The sealing material according to claim 2, wherein the pile fibers constituting the cut pile material are made of a material selected from the group consisting of polyester, polyamide, polytetrafluoroethylene, and combinations thereof.

5. A method for attaching a seal material used in a machine tool having an advancing / retreating member that can advance and retreat from an enclosed area to the outside, the seal material slidably contacting a surface of the advancing / retreating member and separating the inside and outside of the enclosed area, comprising: the sealing material is provided with a plate-shaped substrate having elasticity against bending in a thickness direction, and a fiber sealing portion laminated on the substrate, the fiber sealing portion having a fiber surface formed of a fiber material, a contacting step of contacting the fiber surface with the surface of the advancing / retracting member by the repulsive force of the base material while bending the sealing material; a fixing step of fixing the sealing material; an adjusting step of adjusting the amount of curvature of the sealing material after the abutting step; A method for attaching a sealing material comprising:

6. 6. The method for attaching a sealing material according to claim 5, wherein the sealing material is curved in a direction from the inside of the sealed area to the outside in the abutting step.

7. 7. The method for attaching a sealing material according to claim 6, wherein in the contacting step, the fiber material of the fiber seal portion is inclined in a direction from the inside to the outside of the sealed area.

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