Deburring jig and method for removing burr from connected molded product

Abstract

To efficiently and stably remove burrs from a seal part by using a burr removing jig.SOLUTION: A deburring jig 15 for removing burrs 5 continuing to a seal portion 1 from a connected molded product 4 in which a plurality of seal parts 3 each having the seal portion 1 made of an elastomer material and a metal fitting 2 made of a material different from the elastomer material and integrally molded with the seal portion 1 at one end side are connected in an aligned state with an elastomer material to obtain a single seal part 3 comprises a plurality of cylindrical members 10 aligned in accordance with the aligned metal fittings 2 and into which the lower end of each metal fitting 2 can be inserted, a receiving jig main body 11 to which the lower ends of the plurality of cylindrical members 10 are fixed, and a thrusting jig 14 in which the plurality of seal portions 1 can be inserted and in which hole portions 13a having an inner diameter larger than the outer diameter of the cylindrical members 10 are aligned and arranged. A slit 12 large enough to allow at least the lower end of the metal fitting 2 to be inserted therein is formed at an upper end of the cylindrical member 10.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a burr removing jig and method for removing burrs from a connected molded product in a state where a plurality of seal parts are connected by burrs.

Background Art

[0002] Conventionally, for example, as in Patent Document 1, in the case of a multi-piece product, generally, a plurality of products are often molded with burrs connected.

[0003] In that case, it is necessary to remove burrs from the connected molded product after molding and take out the single product.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the case of a single product of an elastomer such as rubber, it is possible for a person to pick off the burrs by hand. However, in the case of a composite product composed of a shaft-like insert part made of a metal fitting or the like and a seal part made of an elastomer material, a load may be applied to the joint surface and the seal part may peel off from the shaft-like insert part.

[0006] In addition, due to manual work, there are problems such as unstable remaining burrs and time-consuming burr removal work in the case of multi-piece products.

[0007] The present invention has been made in view of such points, and an object thereof is to enable efficient and stable removal of burrs on the seal part.

Means for Solving the Problems

[0008] In order to achieve the above object, in the present invention, a jig in which cylindrical members having slits into which the lower ends of the shaft-like insert portions can be temporarily inserted are arranged in alignment is used for deburring.

[0009] Specifically, in the first invention, A deburring jig for removing burrs continuous with the seal part from a connected molded product in which a plurality of seal parts are connected in a state where seal parts made of an elastomer material and shaft-like insert parts made of a material different from the elastomer material and integrally formed with the seal part at one end side are aligned with each other to obtain a single seal part, A plurality of cylindrical members arranged in alignment according to the aligned shaft-like insert portions and into which the lower ends of the respective shaft-like insert portions can be inserted, A receiving jig body to which the lower ends of the plurality of cylindrical members are fixed, And a punching jig into which a plurality of the seal parts can be inserted and in which holes having an inner diameter larger than the outer diameter of the cylindrical member are arranged in alignment, A slit having a size into which at least the lower end of the shaft-like insert portion can be inserted is formed at the upper end of the cylindrical member, After the lower ends of the plurality of shaft-like insert portions are temporarily inserted into the corresponding slits of the cylindrical members and then further inserted into the cylindrical members, the burrs connecting the respective seal parts can be removed by punching from above with the punching jig.

[0010] In a state where the seal parts are connected by burrs made of an elastomer material, the shaft-shaped insert parts are unstable and prone to tilting. In this state, when trying to insert the lower end of the shaft-shaped insert part into the cylindrical member of the jig, even if most of the shaft-shaped insert parts are inserted into the cylindrical member, if only some of the tilted shaft-shaped insert parts cannot be inserted into the cylindrical member, the surrounding shaft-shaped insert parts must be removed from the cylindrical member again, which is very troublesome. However, according to the above configuration, when temporarily inserting the lower ends of a plurality of shaft-shaped insert parts along the slits of the cylindrical member to the side of the receiving jig body, even if there are some tilted shaft-shaped insert parts, the lower ends of the tilted shaft-shaped insert parts can be inserted into the slits without lifting many surrounding shaft-shaped insert parts. After the lower ends of all the shaft-shaped insert parts can be temporarily inserted into the slits, the shaft-shaped insert parts may be inserted to the back of the cylindrical member, so the insertion operation becomes extremely easy. After insertion, by removing the burrs from the seal part using a punching jig, a single seal part can be obtained easily and surely.

[0011] In the second invention, in the first invention, The burrs of the connected molded product are formed in a film shape connecting between the outer circumferences of the seal parts.

[0012] According to the above configuration, the shaft-shaped insert parts connected by the film-shaped burrs are prone to tilting and difficult to insert into the cylindrical member. However, since the slits are formed in the cylindrical member, only the shaft-shaped insert parts that are not inserted while tilted need to be inserted into the slits, and the insertion operation becomes extremely easy.

[0013] In the method of removing burrs from the connected molded product of the third invention, A connected molded product in which a plurality of seal parts each including a seal part made of an elastomer material and a shaft-shaped insert part made of a material different from the elastomer material and integrally formed at one end side of the seal part are connected in an aligned state, and A plurality of cylindrical members that are aligned in accordance with the aligned axial insert portions and into which the lower ends of the respective axial insert portions can be inserted, a receiving jig body to which the lower ends of the plurality of cylindrical members are fixed, and a plurality of the seal portions can be inserted, and a punching jig in which hole portions having an inner diameter larger than the outer diameter of the cylindrical member are aligned. A deburring jig in which a slit having a size into which at least the lower end of the axial insert portion can be inserted is formed is prepared in the cylindrical member, The connected molded product is moved above the deburring jig with the axial insert portion on the lower side, The lower ends of all of the plurality of axial insert portions are temporarily inserted into the slits of the corresponding cylindrical members, After that, after further inserting the plurality of axial insert portions into the cylindrical members, By punching from above with the punching jig, burrs connecting the respective seal portions are removed, A configuration is adopted in which a plurality of the seal parts are obtained.

[0014] According to the above configuration, when the lower ends of the plurality of axial insert portions are temporarily inserted into the receiving jig body side while aligning them along the slits of the cylindrical members, even if there are some inclined axial insert portions, without lifting many of the surrounding axial insert portions, the lower ends of the inclined axial insert portions can be inserted into the slits. After the lower ends of all the axial insert portions can be temporarily inserted into the slits, the axial insert portions may be inserted to the bottom of the cylindrical members, so that the insertion work becomes extremely easy. After insertion, by removing the burrs from the seal portion using the punching jig, a single seal part can be obtained easily and surely.

Effect of the Invention

[0015] As described above, according to the present invention, since the lower ends of the plurality of axial insert portions integrally formed with the seal portion connected by the burrs of the elastomer material can be temporarily inserted into the slits of the corresponding cylindrical members, it becomes extremely easy to insert the axial insert portions into the cylindrical members, and the burrs of the seal portion can be removed efficiently and stably.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0018] Figs. 1 to 3 show the burr removing jig 15 of an embodiment of the present invention. This burr removing jig 15 includes a seal part 1 made of an elastomer material and a fitting 2 as a shaft-shaped insert part integrally formed at one end side with a material different from the elastomer material (for example, metal). The seal part 3 provided with the fitting 2 is for removing the burrs 5 continuous with the seal part 1 from the connected molded product 4 in which a plurality of seal parts 3 made of an elastomer material are connected in an aligned state to obtain a single seal part 3. The number of seal parts 3 connected to the connected molded product 4 is not particularly limited.

[0019] The burr removing jig 15 includes a plurality of cylindrical members 10 arranged in alignment according to the aligned fittings 2 and capable of inserting the lower ends of the respective fittings 2. The lower ends of these plurality of cylindrical members 10 are fixed to the receiving jig body 11. The cylindrical members 10 are, for example, cylindrical, but may be, for example, square cylindrical according to the shape of a prismatic fitting.

[0020] The burr removing jig 15 also includes a pushing jig 14 having a cutter part 13 in which hole parts 13a having an inner diameter larger than the outer diameter of the cylindrical member 10 and into which a plurality of seal parts 1 can be inserted are arranged in alignment. The cutter part 13 serves to cut the burrs 5.

[0021] And at the upper ends of the respective cylindrical members 10, slits 12 having a size into which at least the lower ends of the fittings 2 can be inserted are formed. The slits 12 are respectively formed as notches on one side surface of the aligned cylindrical cylindrical members 10.

[0022] Thereby, after the lower ends of the plurality of fittings 2 are temporarily inserted into the slits 12 of the corresponding cylindrical members 10, and further inserted into the inside of the cylindrical members 10, the burrs 5 connecting the respective seal parts 1 can be removed by punching from above with the pushing jig 14.

[0023] -Forming method of the connected molded product- First, the forming method of the above-mentioned connected molded product 4 will be briefly described.

[0024] As shown in Fig. 5(a), a mold 30 is prepared, which includes an upper mold 31 with a plurality of mold grooves 31a arranged in alignment and capable of forming a plurality of seal portions 1, and a lower mold 32 with a plurality of mold grooves 32a arranged in alignment and capable of inserting a plurality of fittings 2. The mold 30 may be configured to form one connected molded product 4, or may be capable of molding a plurality of connected molded products 4 at once.

[0025] Then, the fitting 2 is inserted into the mold groove 32a of the lower mold 32.

[0026] Next, as shown in Fig. 5(b), all the fittings 2 are inserted into the mold grooves 32a.

[0027] Next, as shown in Fig. 5(c), a paste-like rubber 6 in an unvulcanized or semi-vulcanized state, which is one of the elastomer materials, is placed on the plurality of fittings 2. Or, when the fitting 2 fills the mold groove 32a, the paste-like rubber 6 is placed on the mold groove 32a.

[0028] Next, as shown in Fig. 6(a), after closing the upper mold 31, the rubber is vulcanized at an appropriate temperature for a predetermined time. At this time, since the paste-like rubber 6 is supplied in excess, the rubber flows into the cavity 31b for burr at the periphery of the mold groove 31a of the upper mold 31, forming a burr 5, and the plurality of seal portions 1 are connected by the burr 5. The thickness of the burr 5 should be set to an appropriate depth, because if it is too thin, the shaft-like insert portion 2 will become unstable, and if it is too thick, the material will be wasted.

[0029] After the lapse of the predetermined time, the vulcanization of the rubber is completed and it hardens. When the upper mold 31 is opened as shown in Fig. 6(b), a state where the respective seal portions 1 are connected by the sheet-like burr 5 is observed.

[0030] Next, as shown in Fig. 6(c), the product, which is the connected molded product 4, is demolded.

[0031] -Method for removing burrs from the connected molded product according to the comparative example- First, prepare a deburring jig 115 according to a comparative example having a cylindrical member 110 without a slit 12. As shown in FIG. 7, in order to compare the effect of the slit 12 of the above-described embodiment, the deburring jig 115 of the comparative example has the same configuration as the deburring jig 15 except that the slit 12 is not provided.

[0032] As shown in FIG. 7(a), in a state where the seal component 3 is connected by the burr 5 made of an elastomer material, since the burr 5 is in a film shape, the seal component 3 is unstable and the fitting 2 is likely to tilt.

[0033] In this state, when trying to insert it into the cylindrical member 110 of the jig, as shown in FIG. 7(b), even when most of the shaft-like insert portion 2 is inserted into the cylindrical member 110, only a part of the tilted shaft-like insert portion 2 is likely to be in a situation where it cannot be inserted into the cylindrical member 110.

[0034] In such a case, the surrounding shaft-like insert portions 2 also have to be taken out of the cylindrical member 110 again, resulting in repeated insertion operations, which is very troublesome.

[0035] -Method for Removing Burrs from the Connected Molded Product According to the Embodiment- Next, the case of the deburring jig 15 according to the above-described embodiment will be described.

[0036] As shown in FIGS. 1(b) and 2(a), the connected molded product 4 is moved above the deburring jig 15 with the fitting 2 on the lower side. Also at this time, in a state where the seal component 3 is connected by the burr 5 made of an elastomer material, since the burr 5 is in a film shape, the seal component 3 is unstable and the fitting 2 is likely to tilt.

[0037] Next, as shown in FIGS. 2(b) and 2(c), while moving the lower ends of all the plurality of metal fittings 2 downward and also horizontally, they are temporarily inserted into the slits 12 of the corresponding cylindrical members 10. At this time, even if there is a metal fitting 2 that is tilted, it is only necessary to slightly lift only that metal fitting 2 or only a plurality of metal fittings 2 around it and re-insert them into the slit 12. Therefore, there is no need for the labor of lifting and re-inserting many metal fittings 2 as in the above comparative example.

[0038] After the temporary insertion of all the metal fittings 2 is completed, as shown in FIG. 3(a), the plurality of metal fittings 2 are further inserted to the innermost part inside the cylindrical member 10 so that the seal part 1 is placed on the upper end of the cylindrical member 10.

[0039] Thereafter, as shown in FIG. 3(b), by punching from above with the hole 13a of the cutter part 13 of the pushing jig 14, the burrs 5 connecting the respective seal parts 1 are removed at once.

[0040] Finally, as shown in FIG. 3(c), by removing from the pushing jig 14 and the cylindrical member 10, a plurality of seal parts 3 are obtained.

[0041] In this way, when the lower ends of the plurality of metal fittings 2 are temporarily inserted toward the receiving jig body 11 side while being along the slits 12 of the cylindrical member 10, even if there are some tilted metal fittings 2, without lifting including the surrounding metal fittings 2, only the lower end of the tilted metal fitting 2 can be inserted into the slit 12. After the lower ends of all the metal fittings 2 can be temporarily inserted into the slit 12, since it is only necessary to insert the metal fittings 2 to the innermost part of the cylindrical member 10, the insertion work becomes extremely easy. After insertion, by removing the burrs 5 from the seal part 1 using the pushing jig 14, a single seal part 3 can be obtained easily and surely.

[0042] Also, the metal fittings 2 connected by the film-like burrs 5 are easy to tilt and difficult to insert into the cylindrical member 10. However, since the cylindrical member 10 is formed with the slits 12, it is only necessary to insert only the metal fittings 2 that are not inserted while being tilted into the slits 12, and the insertion work becomes extremely easy.

[0043] Therefore, according to the burr removing jig 15 according to the present embodiment, the lower ends of the plurality of metal fittings 2 integrally formed with the seal portion 1 connected by the burr 5 of the elastomer material can be temporarily inserted into the slit 12 of the corresponding cylindrical member 10. Thus, it becomes extremely easy to insert the shaft-shaped insert portion 2 into the cylindrical member 10, and the burr 5 of the seal portion 1 can be efficiently and stably removed.

[0044] (Other embodiments) The present invention may be configured as follows with respect to the above embodiment.

[0045] That is, in the above embodiment, the seal component 3 has been described as having a columnar rubber seal portion 1 integrally formed at the upper end of a rod-shaped metal fitting 2 as a shaft-shaped insert portion. However, the shaft-shaped insert does not necessarily have to be a rod-shaped metal, and any member that can be inserted into the mold during molding may be used. Further, although rubber has been described as the elastomer material, a thermoplastic resin material, a thermosetting resin material, or the like may also be used. Further, a connected molded product molded by injection molding may also be targeted.

[0046] Note that the above embodiments are essentially preferred examples and are not intended to limit the scope of the present invention, its applications, or uses.

Explanation of reference numerals

[0047] 1 Seal portion 2 Metal fitting (shaft-shaped insert portion) 3 Seal component 4 Connected molded product 5 Burr 6 Paste-like rubber 10 Cylindrical member 11 Jig body 12 Slit 13 Cutter portion 13a Hole portion 14 Pushing jig 15 Burr removing jig 30 Mold 31 Upper mold 31a Mold groove Cavity for burr 31b Lower mold 32 Mold groove 32a

Claims

1. A flash removal jig for obtaining a single seal component by removing a flash continuous with the seal portion from a connected molded product in which a plurality of seal components each including a seal portion made of an elastomer material and a shaft-shaped insert portion made of a material different from the elastomer material and integrally formed at one end side of the seal portion are connected in an aligned state with the elastomer material, the flash removal jig comprising: a plurality of cylindrical members arranged in alignment corresponding to the aligned shaft-shaped insert portions and into which the lower ends of the respective shaft-shaped insert portions can be inserted; a receiving jig body to which the lower ends of the plurality of cylindrical members are fixed; a pushing jig having a plurality of holes into which the plurality of seal portions can be inserted and which are arranged in alignment and have an inner diameter larger than the outer diameter of the cylindrical members; a slit having a size such that at least the lower end of the shaft-shaped insert portion can be inserted is formed at the upper end of the cylindrical member; configured such that after the lower ends of the plurality of shaft-shaped insert portions are temporarily inserted into the corresponding slits of the cylindrical members and then further inserted into the cylindrical members, the flash connecting the respective seal portions can be removed by punching from above with the pushing jig A flash removal jig characterized by the above.

2. The flash of the connected molded product is formed in a film shape connecting between the outer circumferences of the seal portions. The flash removal jig according to claim 1, characterized by the above.

3. A connected molded product in which a plurality of seal components each including a seal portion made of an elastomer material and a shaft-shaped insert portion made of a material different from the elastomer material and integrally formed at one end side of the seal portion are connected in an aligned state with the elastomer material, and a flash removal jig having a plurality of cylindrical members arranged in alignment corresponding to the aligned shaft-shaped insert portions and into which the lower ends of the respective shaft-shaped insert portions can be inserted, a receiving jig body to which the lower ends of the plurality of cylindrical members are fixed, and a pushing jig having a plurality of holes into which the plurality of seal portions can be inserted and which are arranged in alignment and have an inner diameter larger than the outer diameter of the cylindrical members, and a slit having a size such that at least the lower end of the shaft-shaped insert portion can be inserted is formed in the cylindrical member is prepared, The connected molded product is moved above the flash removal jig with the shaft-shaped insert portion on the lower side, the lower ends of all the plurality of shaft-shaped insert portions are temporarily inserted into the corresponding slits of the cylindrical members, and then, after further inserting the plurality of shaft-shaped insert portions into the cylindrical members, By punching from above with the said punching jig, burrs connecting the respective seal parts are removed, and a plurality of the said seal parts are obtained. A method for deburring a connected molded product, characterized by this.

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