Deburring jig and sheet pad manufacturing method

Abstract

The present invention aims to provide a deburring jig and a method for manufacturing a sheet pad that can easily remove burrs. [Solution] The deburring jig of the present invention comprises a deburring pressing jig made of a protruding member and a deburring receiving jig. The deburring receiving jig has a rigid body and a first elastic body connected to the rigid body, or a second elastic body. The method for manufacturing a sheet pad of the present invention includes the step of removing burrs using the deburring jig.

Description

【Technical Field】 【0001】 The present invention relates to a deburring jig and a method for manufacturing a seat pad. 【Background Art】 【0002】 In recent years, the number of seats with SVS (Seat Ventilation System) specifications has been increasing. A large number of through holes for air conduction are provided in the seat pad for seats with SVS specifications. 【0003】 Conventionally, for the "burrs" formed during the molding of the through holes, after demolding, the finishing worker inserted a finger into each of the through holes and removed the burrs manually by picking them out, thereby completing the formation of the through holes. For this reason, in the manufacturing process of the seat pad, a lot of man-hours were required for deburring the through holes. 【0004】 For example, in the case of burrs such as hard synthetic resin, if a pressing jig is passed through the through holes, the burrs can be separated from the product without inserting a finger into each of the through holes, and the man-hours can be reduced (see, for example, Patent Document 1). 【Prior Art Documents】 【Patent Documents】 【0005】 【Patent Document 1】 Japanese Patent Laid-Open No. 63-180405 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0006】 However, in the case of a seat pad made of foamed polyurethane, which is a soft elastic body, since the periphery of the through hole is also easily deformed, there is a problem that the burrs cannot be easily removed by the method of Patent Document 1. 【0007】 Therefore, the present invention aims to provide a deburring jig and a method for manufacturing a sheet pad that can easily remove burrs. [Means for solving the problem] 【0008】 The gist of the present invention is as follows: (1) A deburring press jig consisting of a protruding member, A deburring receiving jig having a rigid body and a first elastic body connected to the rigid body, A deburring jig characterized by having the following features. 【0009】 (2) Multiple deburring press jigs are connected, and each of the protruding members is arranged to correspond to the multiple through holes in the target sheet pad to be deburred, and each of the protruding members can be inserted into the multiple through holes simultaneously. The deburring jig according to (1), wherein it has a plurality of the deburring receiving jigs, and each of the rigid body parts and each of the first elastic bodies is configured to be insertable into the through hole. 【0010】 (3) A deburring press jig consisting of a protruding member, A second elastic body is a deburring jig, A deburring jig characterized by having the following features. 【0011】 (4) Multiple deburring press jigs are connected, and each of the protruding members has an arrangement corresponding to the multiple through holes in the target sheet pad to be deburred, and each of the protruding members can be inserted into the multiple through holes simultaneously. The deburring jig according to (3), wherein the second elastic body can be positioned to cover one surface of the target sheet pad across the plurality of through holes. 【0012】 (5) The deburring jig according to (3) or (4), wherein the second elastic body is a flat plate-shaped member. 【0013】 (6) The total length L of the protruding member is longer than the total length r of the through hole, and the deburring jig according to (4) or (5) above. 【0014】 (7) The diameter D of the protruding member is equal to or less than the diameter d of the through hole, and the deburring jig according to any one of (4) to (6) above. 【0015】 (8) When the greater depth from the two openings of the through hole of the burr present in each of the plurality of through holes of the target sheet pad is r1 and the smaller depth is r2, the diameter d of the through hole is larger than the depth r2, and the deburring jig according to any one of (4) to (7) above. 【0016】 (9) A method for manufacturing a sheet pad provided with a plurality of through holes, including a step of deburring using the deburring jig according to (1) or (2) above, and characterized in that it is a method for manufacturing a sheet pad. 【0017】 (10) A method for manufacturing a sheet pad provided with a plurality of through holes, including a step of deburring using the deburring jig according to any one of (3) to (8) above, and characterized in that it is a method for manufacturing a sheet pad. 【Effect of the Invention】 【0018】 According to the present invention, it is possible to provide a deburring jig and a method for manufacturing a sheet pad that can easily remove burrs. 【Brief Description of the Drawings】 【0019】 [Figure 1] It is a schematic plan view showing a target sheet pad. [Figure 2] It is a view showing a state of deburring using a conventional deburring jig. [Figure 3] It is a schematic perspective view showing an example of a deburring pressing jig. [Figure 4]It is a schematic plan view showing an example in which a deburring press jig is connected. [Figure 5] It is a schematic cross-sectional view showing a receiving jig for deburring according to the first example. [Figure 6] It is a view showing a state of performing deburring using the deburring jig according to the first embodiment of the present invention. [Figure 7] It is a schematic side view showing a receiving jig for deburring according to the second example. [Figure 8] It is a view showing a state of performing deburring using the deburring jig according to the second embodiment of the present invention. [Figure 9] It is a view for explaining various dimensions. 【Mode for Carrying Out the Invention】 【0020】 Hereinafter, embodiments of the present invention will be exemplified and described in detail with reference to the drawings. 【0021】 FIG. 1 is a schematic plan view showing a target sheet pad to which a deburring jig according to an embodiment of the present invention is applied. This target sheet pad 1 is a sheet pad for a sheet of SVS specification and has a plurality of through holes 2. The shape, diameter, number, arrangement, etc. of the through holes 2 can be various according to the specification. In the illustrated example, the target sheet pad 1 has a total of 18 through holes 2 and is arranged symmetrically. In the illustrated example, among the 18 through holes 2, 16 through holes 2 are elliptical in plan view, and 2 through holes 2 are circular in plan view. 【0022】 FIG. 2 is a view showing a state of performing deburring using a conventional deburring jig. For example, even when inserting the deburring jig 92 into each through hole of the sheet pad 90 using the conventional deburring jig 92, the burr 91 may not be completely peeled off from the wall surface of the through hole, and the burr 91 may remain even after pulling out the deburring jig 92 from the through hole. 【0023】 <Deburring jig> A deburring jig according to one embodiment of the present invention is used to remove burrs 10 from a target sheet pad 1, and comprises a deburring pressing jig 3 and a deburring receiving jig 4a. The configurations of the deburring pressing jig 3 and the deburring receiving jig 4a will be described in detail below. 【0024】 <<Deburring tool>> Figure 3 is a schematic perspective view showing an example of a deburring press jig. Figure 4 is a schematic plan view showing an example of deburring press jigs connected together. 【0025】 As shown in Figure 3, the deburring press jig 3 consists of a protruding member. The protruding member can be a projection 3a, and has a body portion 3b (cylindrical in this example) and a head portion 3c and a leg portion 3d connected to both ends of the body portion 3b in the extending direction, respectively. In the illustrated example, the head portion 3c is circular in plan view when viewed from above the head portion 3c, and the leg portion 3d is elliptical in plan view when viewed from above the leg portion 3d. 【0026】 The projection 3a only needs to be insertable into the through hole 2, and can have various shapes depending on the shape of the through hole 2. Furthermore, the projection 3a can have a shape that lacks either or both of the head 3c and leg parts 3d (i.e., a shape consisting only of the torso 3b). Such various shapes are not particularly limited, but can be molded using a 3D printer or the like. 【0027】 As shown in Figure 4, in this example, the connected deburring press jigs 3f are made up of multiple deburring press jigs 3 connected by a plate-shaped connecting member 3e. Each projection 3a has an arrangement corresponding to the multiple through holes 2 in the target sheet pad 1. The multiple through holes 2 in the target sheet pad 1 may have different shapes depending on their position. As already explained, in the example shown in Figure 1, the target sheet pad 1 has 16 elliptical through holes 2 in plan view and 2 circular through holes 2 in plan view. Therefore, as shown in Figure 4, the side that is first inserted into the through hole 2 (the front side in the front-rear direction of Figure 4) is an elliptical leg portion 3d in plan view at the position corresponding to the elliptical through hole 2 in plan view, and a circular head portion 3c in plan view at the position corresponding to the circular through hole 2 in plan view. If there are three or more types of through hole shapes, it is preferable to prepare two or more types of projections 3a to accommodate all shapes. 【0028】 With this configuration, each projection 3a can be inserted into multiple through holes 2 simultaneously. In other words, each projection 3a can be inserted into the corresponding through hole 2 at the same time for all pairs of projections 3a and through holes 2. 【0029】 The material of the projection 3a is not particularly limited, but for example, a resin can be used. Examples of resins include thermoplastic resins and thermosetting resins. Examples of thermoplastic resins include ABS (acrylonitrile butadiene styrene) and PP (polypropylene). Examples of thermosetting resins include EE (epoxy resin). 【0030】 <<First example of a deburring jig>> Figure 5 is a schematic cross-sectional view showing a deburring jig according to the first example. Figure 6 is a diagram showing deburring being performed using the deburring jig according to the first embodiment of the present invention. 【0031】 As shown in Figure 5, this deburring jig 4a has a rigid body 4b and a first elastic body 4c connected to the rigid body 4b. Although not shown in the figure, the deburring jig 4a according to the first example can be connected by connecting members. By connecting multiple deburring jig 4a according to the first example, a jig can be formed having multiple rigid body 4b and multiple first elastic bodies 4c, each connected to the rigid body 4b. 【0032】 The rigid body 4b can have a shape corresponding to the shape of the through hole 2. For example, if the through hole 2 is cylindrical or elliptical, the rigid body 4b can also be cylindrical or elliptical. Such various shapes are not particularly limited, but can be molded using a 3D printer. 【0033】 The material of the rigid body 4b is not particularly limited, but for example, resin can be used. Examples of resins include thermoplastic resins and thermosetting resins. Examples of thermoplastic resins include ABS (acrylonitrile butadiene styrene) and PP (polypropylene). Examples of thermosetting resins include EE (epoxy resin). 【0034】 In the illustrated example, the first elastic body 4c is a spring member. The first elastic body 4c can also be a cushion member such as a urethane pad. In the case of a cushion member, the rebound modulus (measurement method is JIS 6400-3) can be, for example, 50% to 80%, and the hardness (measurement method is JIS 6400-2 Method D) can be, for example, 147-245 N / φ200. 【0035】 The deburring jig according to the first embodiment comprises a deburring pressing jig 3 shown in Figure 3 and a deburring receiving jig 4a shown in Figure 5. The effects and advantages of the deburring jig according to the first embodiment when using a connected deburring pressing jig 3f and a connected deburring receiving jig will be described below with reference to Figure 6. 【0036】 First, a deburring jig is set on the target sheet pad 1. In the first embodiment, the rigid body portion 4b of the deburring jig 4a is inserted first from the opening of the through hole 2, and the deburring jig 4a is inserted into the through hole 2 until it is in contact with the burr 10. Regardless of which of the two openings of the through hole 2 is used for insertion, the rigid body portion 4b can be inserted until it is in contact with the burr 10. Although not shown in the figures, deburring jig 4a is set in all of the multiple through holes 2. The depth of the burr 10 from the opening can be adjusted by the design of the mold for the target sheet pad 1. 【0037】 As shown in the figure, it is preferable that the sum of the total length of the rigid body 4b and the total length of the first elastic body 4c (when no load is applied) is approximately the same as the depth from the burr 10 to the opening. 【0038】 Next, insert the deburring push jig 3 from the opening opposite to the one into which the deburring receiving jig 4a was inserted. 【0039】 In the deburring jig of the first embodiment, the burr 10 is sandwiched and fixed between the deburring pressing jig 3 and the rigid body 4b. Then, as the first elastic body 4c contracts, it moves in the insertion direction of the deburring pressing jig 3. As a result, the burr 10 attempts to peel off from the wall surface of the through hole 2 of the target sheet pad 1 while fixed, so it can be cleanly peeled off from the wall surface of the through hole 2 of the target sheet pad 1 all around. Furthermore, when using connected deburring pressing jigs 3f and connected deburring receiving jigs as in this example, deburring can be performed on all through holes 2 simultaneously. Thus, according to the deburring jig of the first embodiment, the burrs 10 can be easily removed. Furthermore, according to the first embodiment, the burrs 10 can be easily removed regardless of which of the two openings of the through hole 2 the deburring receiving jig 4a is inserted into. 【0040】 <<Second example of a deburring jig>> Figure 7 is a schematic side view showing a deburring jig 5 according to the second example. The deburring jig 5 is a second elastic body 5a. In the illustrated example, the second elastic body 5a is a flat plate-shaped member. This allows the second elastic body 5a to be positioned to cover one surface of the target sheet pad 1 across multiple through holes 2 (all of the through holes 2). As long as such positioning is possible, the shape of the second elastic body 5a is not limited to the above example. 【0041】 If the second elastic body 5a is a flat plate-shaped member, its thickness is not particularly limited, but can be, for example, 2 to 10 cm. 【0042】 The material of the second elastic body 5a is not particularly limited, but for example, soft urethane foam, fibrous elastic material, thermoplastic elastic material, etc. can be used. Urethane chips or urethane foam can also be used. The rebound modulus of the second elastic body 5a (measurement method is JIS 6400-3) can be, for example, 20-80%, and the hardness (measurement method is JIS 6400-2 Method D) can be, for example, 147-343 N / φ200. 【0043】 The deburring jig according to the second embodiment of the present invention comprises a deburring push jig 3 shown in Figure 3 and a deburring receiving jig 5 shown in Figure 7. Figure 8 shows how deburring is performed using the deburring jig according to the second embodiment of the present invention. The operation and effects of the deburring jig according to the second embodiment when using the connected deburring push jig 3f and deburring receiving jig 5 will be described below with reference to Figure 8. 【0044】 First, a deburring jig is set on the target sheet pad 1. In the second embodiment, the second elastic body 5a is placed in the opening of the through hole 2 that has a smaller depth to the burr 10, so that the second elastic body 5a spans and covers multiple through holes 2 (all of the through holes 2). 【0045】 Next, the deburring tool 3 is inserted into the opening of the through-hole 2 that has a greater depth to the burr 10. 【0046】 According to the deburring jig of the second embodiment, as the deburring pushing jig 3 is inserted, the burr 10 is pushed into and fixed by the deburring receiving jig 5, which is the second elastic body 5a, so that the burr 10 can be cleanly peeled off from the wall surface of the through hole 2 of the target sheet pad 1 all around. Furthermore, when using connected deburring pushing jigs 3f and deburring receiving jigs 5 as in this example, all through holes 2 can be deburred simultaneously. Thus, the burrs 10 can also be easily removed using the deburring jig 5 of the second embodiment. The second embodiment is also advantageous in terms of cost, particularly because the deburring jig 5 is a single, simple component. 【0047】 The dimensions of the second embodiment will now be described. Figure 9 is a diagram illustrating the various dimensions. As shown in Figure 9, it is preferable that the total length L of the projection 3a is longer than the total length r of the through hole 2. This is to ensure that the burr 10 is pressed into the deburring receiving jig 5 (second elastic body 5a) as described above. For similar reasons, when the greater of the two depths of the burrs 10 present in each of the multiple through holes 2 of the target seat pad 1 is r1 and the smaller of the two depths of the through holes 2 is r2, it is preferable that the following equation 1 is satisfied. (Formula 1)L≧r+3r2 【0048】 Furthermore, the total length L of the projection 3a refers to the total length of all of the following components combined, for example, in the case of a structure having a torso 3b, a head 3c, and legs 3d, as shown in Figure 2. 【0049】 Furthermore, it is preferable that the diameter (maximum diameter) D of the projection 3a is smaller than the diameter (maximum diameter) d of the through hole 2. This is to facilitate the insertion of the projection 3a into the through hole 2. The diameter D of the projection 3a and the diameter d of the through hole 2 preferably satisfy the following formula 2. (Formula 2) d-3(mm)≦D(mm)≦d-1(mm) By setting the diameter D to (d-3)(mm) or greater, the effect of peeling the burr 10 from the side wall of the through hole 2 can be enhanced, while by setting the diameter D to (d-1)(mm) or less, insertion of the projection 3a into the through hole 2 (especially simultaneous insertion into multiple (all) through holes 2) can be facilitated. 【0050】 Furthermore, it is preferable that the diameter d of the through hole 2 is larger than the depth r2. This is to ensure that the burr 10 is pressed into the deburring jig, which is the second elastic body 5, as described above. 【0051】 <Method of manufacturing a sheet pad> A method for manufacturing a sheet pad according to the first embodiment of the present invention is a method for manufacturing a sheet pad 1 having a plurality of through holes 2, and includes a step of removing burrs using a deburring jig of the first embodiment. 【0052】 More specifically, first, the deburring support jig of the first example is set on the target sheet pad 1. In the first embodiment, the deburring support jig 4a is inserted into the through hole 2 until it is in contact with the burr 10, with the rigid body portion 4b of the deburring support jig 4a being inserted first from one of the two openings of the through hole 2. Although not shown in the illustration, deburring support jigs 4a are set in all of the multiple through holes 2. Next, the deburring push jig 3 is inserted from the opening on the opposite side from where the deburring receiving jig 4a was inserted. 【0053】 In the manufacturing method of the sheet pad according to the first embodiment, the burr 10 is sandwiched and fixed between the deburring press jig 3 and the rigid body 4b. Then, as the first elastic body 4c contracts, it moves in the insertion direction of the deburring press jig 3. As a result, the burr 10 attempts to peel off from the wall surface of the through hole 2 of the target sheet pad 1 while fixed, so it can be cleanly peeled off from the wall surface of the through hole 2 of the target sheet pad 1 all around. Furthermore, when using connected deburring press jigs 3f and connected deburring receiving jigs as in this example, deburring can be performed on all through holes 2 simultaneously. Thus, according to the manufacturing method of the sheet pad of the first embodiment, the burrs 10 can be easily removed. Furthermore, according to the first embodiment, the burrs 10 can be easily removed regardless of which of the two openings of the through hole 2 the deburring receiving jig 4a is inserted into. 【0054】 A method for manufacturing a sheet pad according to a second embodiment of the present invention is a method for manufacturing a sheet pad 1 having a plurality of through holes 2, and includes a step of removing burrs using a deburring jig of the second embodiment. 【0055】 More specifically, first, the deburring jig 5 of the second example is set on the target sheet pad 1. In the second embodiment, the second elastic body 5a is placed in the opening of the through hole 2 that has a smaller depth to the burr 10, so that the second elastic body 5a covers multiple (all) through holes 2. Next, the deburring tool 3 is inserted into the opening of the through-hole 2 that has a greater depth to the burr 10. 【0056】 According to the manufacturing method of the sheet pad of the second embodiment, as the deburring press jig 3 is inserted, the burr 10 is pressed into the deburring receiving jig, which is the second elastic body 5a, so that the burr 10 can be cleanly peeled off from the wall surface of the through hole 2 of the target sheet pad 1 all around. Furthermore, when using connected deburring press jig 3f and deburring receiving jig 5 as in this example, deburring can be performed on all through holes 2 simultaneously. Thus, the burrs 10 can also be easily removed by the sheet pad manufacturing method of the second embodiment. The second embodiment is also advantageous in terms of cost, particularly because the deburring jig 5 is a single, simple component. 【0057】 Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above. For example, in the first and second embodiments, connected deburring press jigs 3f are used in both cases. In the first embodiment, connected deburring receiving jigs are used, and in the second embodiment, the second elastic body 5a is made to cover all the through holes 2, so that the burrs 10 can be removed from all the through holes 2 simultaneously. However, it is also possible to deburr each through hole 2 individually using a single deburring press jig 3 and a single deburring receiving jig (4a, 5). Furthermore, various other modifications and alterations are possible. [Explanation of Symbols] 【0058】 1: Seat pad, 2: Through hole 3: Deburring press jig, 3a: protrusion, 3b: Torso, 3c: Head, 3d: Legs, 3e: Connecting member, 3f: Connected deburring press fixtures, 4a: Deburring jig, 4b: rigid body, 4c: first elastic body, 5: Deburring jig, 5a: Second elastic body, 10: Bali, 90: Seat pad, 91: Bali, 92: Deburring press jig

Claims

[Claim 1] A deburring press jig consisting of a protruding member, A deburring jig having a rigid body and a first elastic body connected to the rigid body, A deburring jig characterized by having the following features. [Claim 2] Multiple deburring press jigs are connected, Each of the aforementioned protruding members is arranged to correspond to a plurality of through holes in the target sheet pad to be deburred, and each of the aforementioned protruding members can be inserted into the plurality of through holes simultaneously. Having multiple deburring receiving jigs, The deburring jig according to claim 1, wherein each of the rigid body portions and each of the first elastic bodies is configured to be insertable into the through hole. [Claim 3] A deburring press jig consisting of a protruding member, The second elastic body is a deburring jig, A deburring jig characterized by having the following features. [Claim 4] Multiple deburring press jigs are connected, Each of the aforementioned protruding members is arranged to correspond to a plurality of through holes in the target sheet pad to be deburred, and each of the aforementioned protruding members can be inserted into the plurality of through holes simultaneously. The deburring jig according to claim 3, wherein the second elastic body can be positioned to cover one surface of the target sheet pad across the plurality of through holes. [Claim 5] The deburring jig according to claim 3 or 4, wherein the second elastic body is a flat plate-shaped member. [Claim 6] The deburring jig according to claim 4, wherein the total length L of the protruding member is longer than the total length r of the through hole. [Claim 7] The deburring jig according to claim 4, wherein the diameter D of the protruding member is less than or equal to the diameter d of the through hole. [Claim 8] When the greater of the two depths of the burrs present in each of the multiple through holes of the target sheet pad is denoted as r1 and the smaller of the two depths of the through holes as r2, The deburring jig according to claim 4, wherein the diameter d of the through hole is greater than the depth r2. [Claim 9] A method for manufacturing a seat pad having multiple through holes, A method for manufacturing a sheet pad, characterized by including a step of removing burrs using a deburring jig described in claim 1 or 2. [Claim 10] A method for manufacturing a seat pad having multiple through holes, A method for manufacturing a sheet pad, characterized by including a step of removing burrs using a deburring jig described in claim 3 or 4.

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