JP5829069B2 - Manufacturing method of counter with tank - Google Patents

Description

  The present invention relates to a method of manufacturing a counter to which a tank such as a sink or a bowl is attached.

  2. Description of the Related Art Conventionally, in a kitchen or a washroom, a counter with a tub is provided in which a tank such as a sink or a bowl is attached to a flat counter body. The opening of the tank is arranged to coincide with the opening of the counter body. The tank opening and the counter body opening are formed continuously and integrally, thereby improving the appearance and making it difficult for dirt to adhere to the boundary between the tank and the counter body. The feeling is also improved.

  As a manufacturing method of such a counter with a tank, for example, a method disclosed in Patent Document 1 is known. In the manufacturing method disclosed in Patent Document 1, first, an opening is formed in a tank mounting portion of the counter body. Thereafter, the tank is attached to the back surface of the counter so that the opening and the opening of the counter body coincide. At this time, the tank may be distorted, and in this case, the opening of the tank and the opening of the counter body may not match. The periphery of the opening is cut by a cutting machine so that the opening of the tank and the opening of the counter body are made continuous.

Japanese Patent No. 4416145

  However, in Patent Document 1, since the counter body needs to be processed at least twice, that is, the step of forming the opening in the counter body and the step of cutting the periphery of the opening of the counter body, the number of manufacturing steps increases. There was a problem of doing.

  The present invention has been made in view of such points, and the object of the present invention is to reduce the number of steps and reduce the number of manufacturing steps when obtaining a counter in which the opening of the tank and the opening of the counter body are made continuous. Is to reduce.

  In order to achieve the above object, in the present invention, the opening of the counter body is formed so as to coincide with the opening of the tank after the tank is attached.

1st invention is the manufacturing method of the counter (10) which attaches the tank (30) which the upper part opened to the back side of the counter main body (20), The opening part corresponding to the opening part (33a) of the said tank (30) The counter body (20) without (23) is prepared, the tank (30) is attached to the back side of the counter body (20), and then the opening of the tank (30) in the counter body (20) ( 33a), a lower hole (27) for forming the opening (23) of the counter body (20) is formed in a portion overlapping with the counter body (20), and then the lower hole (27) of the counter body (20) is opened. By inserting the tool (B) and bringing the outer peripheral surface of the roller (B2) provided at the tip of the drilling tool (B) into contact with the inner peripheral surface of the tank (30), the tank ( for open pores while with respect to the inner circumferential surface of the 30) The counter body (20) is moved by rotating the vertical blade (H2) provided on the base end side relative to the roller (B2) of the drilling tool (B). ) To form an opening (23) continuous with the opening (33a) of the tank (30) in the counter body (20), and simultaneously with the formation of the opening (23), The peripheral edge of the opening (23) of the counter body (20) is chamfered by rotationally driving the tapered blade (H1) provided on the base end side of the vertical blade (H2) of the tool (B). It is characterized by doing.

  According to this configuration, since the opening of the counter body is formed so as to be continuous with the opening of the tank with reference to the opening of the tank, the counter body and the opening of the tank are formed simultaneously with the formation of the opening of the counter body. A sense of unity can be obtained by continuing the parts.

According to a second invention, in the first invention, a flange (34) is formed around the opening (33a) of the tank (30), and the substrate (51) and the substrate (51) are erected. And a columnar member (52) that supports the flange (34) of the tank (30) from the back side, and a protrusion (52a, 52b) or a recess is formed on the upper end surface of the columnar member (52). prepared ingredients (50), the flange section (34) which is formed on the positioning recesses (35a, 35b) or at least one of the protrusions, the protrusions (52a, 52 b) of the jig (50) or After engaging the recess and positioning the tank (30) to the jig (50), the tank (30) is attached to the back side of the counter body (20) together with the jig (50), and then open the bottom hole (27), thereafter opening to the counter body (20) (23) It is characterized in that to form.

  According to this configuration, for example, when distortion occurs in the tank due to manufacturing factors, the tank can be corrected by positioning the tank on the jig. Thereby, when forming an opening part in a counter main body on the basis of the internal peripheral surface of a tank, this opening part becomes a shape as aimed.

  According to a third invention, in the second invention, the tank (30) has a multilayer structure, the back surface layer is a norbornene resin layer, and the back surface layer has at least a positioning concave portion (35a, 35b) or a convex portion. One is provided.

  According to this configuration, the back surface layer of the tank has high rigidity and tenacity, and positioning is ensured by providing at least one of the concave portion or the convex portion on the back surface layer having such properties. Will come to be.

  According to the first invention, after the tank is attached to the counter main body having no opening corresponding to the opening of the tank, the lower hole is formed, and then the drilling tool is inserted into the lower hole. Since the opening is formed in the counter body with reference to the peripheral surface, the opening of the tank and the counter body are not subjected to the opening forming process and the cutting process with respect to the counter body as in the prior art. A counter having a continuous opening can be obtained. Thereby, a process can be reduced and manufacturing man-hours can be reduced.

  According to the second aspect of the invention, the shape of the tank can be corrected by engaging at least one of the concave portion or the convex portion of the tank with the jig, and the counter body is opened on the basis of the inner peripheral surface of the tank. When the portion is formed, the opening can be formed in a desired shape, and the appearance of the counter can be further improved.

  According to the third invention, since the back layer of the tank is a norbornene-based resin layer and at least one of the positioning concave portion or the convex portion is provided on the back layer, the tank can be positioned reliably. Thereby, the appearance of the counter can be further improved.

It is a perspective view of the counter for kitchens manufactured using the manufacturing method concerning an embodiment. It is the perspective view which looked at the counter main body before an opening part was formed from the front side. It is the perspective view which looked at the counter main body before an opening part was formed from the back side. It is a bottom view of a sink. It is the VV sectional view taken on the line in FIG. It is sectional drawing explaining the point which fixes a sink to a jig | tool. FIG. 7 is a view corresponding to FIG. 6 in a state where the sink is fixed to the jig. FIG. 7 is a view corresponding to FIG. 6 in a state where an adhesive is applied to the annular collar portion of the sink. FIG. 7 is a view corresponding to FIG. 6 for explaining a procedure for fixing the counter body to the sink. FIG. 7 is a view corresponding to FIG. 6 in a state where the counter body is fixed to the sink. FIG. 7 is a view corresponding to FIG. 6 for explaining a procedure for forming a pilot hole in the counter body. FIG. 7 is a view corresponding to FIG. 6 for explaining a procedure for inserting a drilling tool into the lower hole. FIG. 7 is a view corresponding to FIG. 6 in a state where a drilling tool is brought into contact with the inner peripheral surface of the sink. FIG. 7 is a view corresponding to FIG. 6 for explaining the point of forming an opening in the counter body. FIG. 7 is a view corresponding to FIG. 6 in a state where an opening is formed in the counter body. It is sectional drawing of the counter removed from the jig | tool. FIG. 7 is a view corresponding to FIG. 6 according to Modification 1 of the embodiment. FIG. 10 is a view corresponding to FIG. 9 according to Modification 2 of the embodiment. It is FIG. 10 equivalent view concerning the modification 2 of embodiment. FIG. 6 is a view corresponding to FIG. 5 according to Modification 3 of the embodiment. FIG. 6 is a view corresponding to FIG. 5 according to Modification 4 of the embodiment. FIG. 6 is a view corresponding to FIG. 5 according to Modification 5 of the embodiment. FIG. 9 is a view corresponding to FIG. 4 according to Modification 6 of the embodiment. FIG. 9 is a view corresponding to FIG. 5 according to Modification 7 of the embodiment. FIG. 9 is a view corresponding to FIG. 5 according to Modification 8 of the embodiment. It is a perspective view explaining the attachment procedure of the jig concerning the modification 9 of an embodiment. FIG. 5A is a diagram corresponding to FIG. 5 according to Modification Example 10 of the embodiment, FIG. 5B is a diagram corresponding to FIG. 5 according to Modification Example 11 of the embodiment, and FIG. FIG. 6 is a diagram corresponding to FIG. 5. 5A is a diagram corresponding to FIG. 5 according to Modification 13 of the embodiment, FIG. 5B is a diagram corresponding to FIG. 5 according to Modification 14 of the embodiment, and FIG. 5C is related to Modification 15 of the embodiment. FIG. 6 is a diagram corresponding to FIG. 5.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 1 shows a counter 10 manufactured using a counter manufacturing method according to an embodiment of the present invention. The counter 10 includes a flat counter main body 20 and a sink (tank) 30 and is a kitchen counter installed in a kitchen of a residence, for example.

  In addition to the above-described kitchen counter, the present invention can also be applied to, for example, manufacturing a wash counter installed in a washroom or the like. In this case, the tank is often a ball.

  The counter body 20 is made of a well-known artificial marble, and has a width that is longer than the depth. On the near side of the counter main body 20 (the near side when viewed from the user during use), a near-side convex strip portion 21 that protrudes downward and extends in the width direction is formed. Further, on the back side of the counter body 20 (the back side when viewed from the user during use), a back-side ridge portion 22 that protrudes upward and extends in the width direction is formed. Further, on the right side of the counter body 20, an opening 23 that is continuous with the opening 33 a of the sink 30 is formed so as to penetrate the counter body 20. The opening 23 has a shape that is long in the left-right direction of the counter body 20.

  As shown in FIGS. 2 and 3, the opening 23 is not formed immediately after the counter body 20 is manufactured, but is formed after being integrated with a sink 30 described later.

  As shown in FIG. 3, front side reinforcing trees 24 a and 24 b for reinforcing the front side ridge portion 21 of the counter body 20 are bonded to the longitudinal direction front side ridge portion 21 on the back surface of the counter body 20. Rear reinforcing trees 24c and 24d for reinforcing the back-side ridge 22 of the counter body 20 are bonded to the direction back-side ridge 22 and the counter body 20 is reinforced at both longitudinal ends. The outer reinforcing woods 25a and 25d are bonded to each other. Further, around the opening 23 on the back surface of the counter body 20, inner reinforcing trees 25 b and 25 c for reinforcing the counter body 20 are arranged and bonded so as to surround the opening 23.

  On the other hand, the sink 30 shown in FIG. 4 has a two-layer structure having a substantially rectangular box shape as a whole. As shown in FIG. The laminated material 32 constituting the front side of the sink 30 is integrated. The sink 30 includes a concave main body 33 and an annular flange 34 extending outward from the periphery of the opening 33a of the main body 33. The main body 33 and the annular flange 34 are integrally formed. Has been. The annular flange 34 is bonded to the counter body 20.

  The base material 31 of the sink 30 is made of a molded product of polynorbornene resin having high rigidity and tenacity, and the thickness is about 2 mm to 7 mm. The thickness of the base material 31 can be changed according to the performance required for the sink 30, and is not limited to the above range.

  In the present embodiment, the polynorbornene-based resin is, for example, an olefin-based cross-linked thermosetting resin using dicyclopentadiene (DCPD) as a main raw material. The norbornene-based resin that can be used in the present embodiment is not limited to those described above as long as it has a norbornene ring.

  The laminated material 32 of the sink 30 is formed by molding BMC (bulk molding compound), and has a thickness of about 1 mm to 5 mm. The thickness of the laminated material 32 can be changed according to the performance required for the sink 30, and is not limited to the above range. For example, BMC is a mixture of vinyl ester resin (epoxy acrylate resin), curing agent, UV absorber, internal mold release agent, low shrinkage agent, resin chip, thickener, organic fiber, filler, etc. is there. The laminated material 32 may be obtained by molding a sheet molding compound.

  The annular flange 34 of the sink 30 also has a two-layer structure. As shown in FIG. 5, the base 31 of the annular flange 34 has a thick central portion, with the central portion in the width direction of the flange 34 protruding toward the laminated material 32. The thick portion of the base 31 of the annular flange 34 has positioning first and second recesses 35a and 35b (also shown in FIG. 4) that open on the back surface of the flange 34 and are recessed toward the front side. Is formed. As shown in FIG. 4, the four first recesses 35 a are arranged so as to be located on the diagonal line of the sink 30 in a bottom view. The four second recesses 35b are disposed between the first recesses 35a and 35a adjacent to each other in the circumferential direction of the annular flange 34. The inner diameter of the first recess 35a is set larger than the inner diameter of the second recess 35b. Further, as shown in FIG. 5, the upper portions (bottom side portions) of the first and second recesses 35 a and 35 b are formed in a tapered shape whose inner diameter becomes smaller toward the upper surface of the annular flange portion 34.

  The reason why the inner diameter of the second recess 35b is set smaller than the inner diameter of the first recess 35a is as follows. That is, it is often difficult to position the first recess 35a and the second recess 35b simultaneously with a jig 50 described later in consideration of the deformation of the sink 30, and the second recess at the center of each side that is particularly easily deformed. This is because the positioning of the entire sink 30 is facilitated by positioning 35b on the jig 50 and then positioning the remaining first recess 35a. This structure is effective when the deformation of the sink 30 is large.

  If the deformation of the sink 30 is small, the inner diameter of the first recess 35a and the inner diameter of the second recess 35b may be the same. Conversely, the inner diameter of the first recess 35a may be smaller than the inner diameter of the second recess 35b.

  Next, a method for manufacturing the counter 10 configured as described above will be described. As shown in FIG. 3, the outer reinforcing trees 24 a to 24 d and the inner reinforcing trees 25 a to 25 d are bonded to the counter body 20 with an adhesive. Further, as shown in FIG. 4, the first and second recesses 35 a and 35 b are formed in the annular flange 34 of the sink 30 by a molding die (not shown) when the sink 30 is molded.

  Further, a jig 50 shown in FIG. 6 is prepared. The jig 50 is for positioning the sink 30, has a flat plate-like substrate 51 larger than the annular flange 34 of the sink 30, columnar members 52 and 52 erected on the substrate 51, and the sink 30. And a support member 53 that supports the bottom.

  FIG. 6 shows a case where the AA line cross-sectional portion of the sink 30 in FIG. 4 is positioned. Although not shown in FIG. 6, columnar members are provided so as to be located on both sides of the sink 30, and the columnar members 52 support the four side portions on the back surface side of the annular flange 34.

  The substrate 51 is disposed substantially horizontally. The columnar member 52 extends substantially vertically and supports the annular flange 34 of the sink 30 from the back side, and is disposed corresponding to the positions where the first and second recesses 35a and 35b are formed. . The back surface of the annular flange 34 of the sink 30 is placed on the upper end surface of the columnar member 52. On the upper end surface of the columnar member 52, a first protrusion 52a that engages with the first and second recesses 35a and 35b and a second protrusion 52b into which the outer periphery of the annular flange 34 is fitted are formed. . Further, the support member 53 is disposed in the vicinity of the center portion of the substrate 51.

  First, the sink 30 is positioned on the jig 50. That is, as shown in FIG. 6, the sink 30 is moved from the upper side to the lower side of the jig 50 so that the opening 33a is positioned on the upper side, and as shown in FIG. The first and second recesses 35 a and 35 b are engaged with the first protrusion 52 a of the jig 50, and the annular flange 34 is fitted into the second protrusion 52 b of the jig 50. As a result, for example, even when the sink 30 is deformed during molding, the shape of the sink 30 is corrected by the jig 50 and becomes substantially as designed.

  Next, as shown in FIG. 8, the adhesive S is applied to the upper surface of the annular flange 34 of the sink 30. This adhesive S is conventionally used.

  Thereafter, as shown in FIG. 9, the counter body 20 is arranged above the sink 30 so that the back surface thereof faces downward, and then moved downward. As shown in FIG. 10, the annular flange 34 of the sink 30 is moved. Place on top. At this time, the site where the opening 23 is to be formed, indicated by the phantom line in FIG. Then, after a while, the adhesive S is solidified and the sink 30 is bonded to the back surface of the counter body 20.

  After the sink 30 is bonded, preparation is made to form the opening 23 in the counter body 20. That is, as shown in FIG. 11, the pilot hole 27 is formed by penetrating through the portion of the counter body 20 where the opening 23 is to be formed, that is, the portion overlapping the opening 33 a of the sink 30 in the counter body 20. (See FIG. 12). The lower hole 27 only needs to be large enough to insert a drilling tool B described later into the sink 30, and can be changed according to the type of the drilling tool B. The lower hole 27 is preferably formed so as to be located slightly inside the peripheral edge of the opening 33 a of the sink 30.

  After forming the lower hole 27, the drilling tool B is moved in the direction indicated by the arrow in FIG. 12 and inserted into the sink 30 from the lower hole 27. The drilling tool B includes a blade B1 for cutting the counter body 20 and a roller B2 provided at the lower end of the blade B1. The blade B1 is rotationally driven by a motor or the like so that the counter body 20 can be cut. The blade B1 is composed of a tapered blade H1 and a vertical blade H2. The vertical blade H2 is for cutting the counter main body 20 so as to form the same surface as the inner peripheral surface of the sink 30, and the taper-shaped blade H1 is used to cut the peripheral edge of the opening 23 of the counter main body 20. For chamfering. The roller B <b> 2 is supported so as to be able to freely rotate substantially coaxially with the rotation center of the blade B <b> 1, and the outer peripheral surface can contact the inner peripheral surface of the sink 30. The outer peripheral surface of the roller B2 and the outer peripheral surface of the blade B1 are located on substantially the same plane.

  After inserting the front end side (roller B2 side) of the drilling tool B into the lower hole 27 of the counter body 20, the drilling tool B is moved closer to the periphery of the opening 33a of the sink 30, and the counter body 20 is moved by the blade B1. To cut. As shown in FIG. 13, the drilling tool B is moved until the roller B <b> 2 of the drilling tool B contacts the inner peripheral surface of the sink 30. In this state, the position of the drilling tool B is determined by the contact of the roller B2 with the inner peripheral surface of the sink 30.

  Thereafter, the drilling tool B is moved along the opening 33a of the sink 30 as shown in FIG. At this time, while the roller B2 is in contact with the inner peripheral surface of the sink 30, the drilling tool B is moved so as not to leave the inner peripheral surface. That is, the blade B1 is moved annularly with the inner peripheral surface of the sink 30 as a reference. As a result, the movement trajectory of the blade B1 matches the shape of the opening 33a of the sink 30, so that an opening 23 continuous with the opening 33a of the sink 30 is formed in the counter body 20 with reference to the inner peripheral surface of the sink 30. (See FIG. 16).

  In this way, the openings 23 and 33a of the counter body 20 and the sink 30 can be made continuous with the formation of the opening 23 of the counter body 20. Thus, a sense of unity between the counter body 20 and the sink 30 can be obtained without performing the process of forming the opening 23 in the counter body 20 and the subsequent cutting process of the peripheral edge of the opening 23 as in the prior art. Can do.

  Further, when the opening 23 is formed in the counter body 20, the sink 30 is positioned on the jig 50 to correct the distortion. As a result, the inner peripheral surface of the sink 30 serving as a reference for the shape of the opening 23 of the counter main body 20 can be formed in a substantially designed shape, so that the opening 23 has a desired shape.

  As described above, according to the counter manufacturing method of this embodiment, after the sink 30 is attached to the counter body 20 without the opening 23 corresponding to the opening 33a of the sink 30, the lower hole 27 is formed. Thereafter, the drilling tool B is inserted into the lower hole 27, and the opening 23 is formed in the counter body 20 with reference to the inner peripheral surface of the sink 30. Thus, the counter 10 in which the opening 33 a of the sink 30 and the opening 23 of the counter body 20 are made continuous can be obtained without performing the forming process and the cutting process of the opening 23. Thereby, a process can be reduced and manufacturing man-hours can be reduced.

  Further, by engaging the first and second recesses 35 a and 35 b of the annular flange 34 of the sink 30 with the jig 50, the shape of the sink 30 can be corrected by the jig 50, and the inner periphery of the sink 30 When the opening 23 is formed in the counter body 20 on the basis of the surface, the opening 23 can have a shape as intended, and the appearance of the counter 10 can be further improved.

  Furthermore, since the back layer of the sink 30 is a norbornene-based resin layer having high rigidity and tenacity and the first and second recesses 35a and 35b are provided on the norbornene resin layer, the sink 30 can be positioned reliably. . Thereby, the appearance of the counter 10 can be further improved.

  In the above embodiment, the sink 30 is bonded after the outer and inner reinforcing trees 24 and 25 are bonded to the counter body 20, but the present invention is not limited to this, for example, as in the modification shown in FIG. After the sink 30 is bonded to the counter body 20 to which the outer and inner reinforcing trees 24 and 25 are not bonded, the opening 23 is formed, and then the outer and inner reinforcing trees 24 and 25 are bonded to the counter body 20. Good.

  Further, in the above embodiment, the counter body 20 is bonded to the sink 30 with the opening 33a of the sink 30 facing upward. However, the present invention is not limited to this, as in Modification 2 shown in FIGS. The counter body 20 may be disposed so that the back surface thereof faces upward, and then the sink 30 may be moved downward to be bonded. In the second modification, a jig 60 that holds the counter body 20 is used. The jig 60 has a fitting surface 60a shaped to fit the front side of the counter body 20. After the sink 30 is bonded to the counter body 20, the upper and lower sides are reversed to form the opening 23 in the counter body 20 as shown in FIGS. 11 to 16.

  Moreover, in the said embodiment, although the recessed part 35a of the annular collar part 34 of the sink 30 is formed so that the upper part may become a taper shape as shown in FIG. 5, it is not restricted to this but is shown in FIG. As in Modification 3, the recess 35a may have a shape having substantially the same cross section over the entire depth direction.

  Moreover, in the said embodiment, although the recessed part 35a is formed in the thick part of the base material 31 in the cyclic | annular collar part 34 of the sink 30, it is not restricted to this, An annular ridge like the modification 4 shown in FIG. You may form the recessed part 35a, without providing a thick part in the base material 31 of the part 34. FIG.

  Moreover, in the said embodiment, as shown in FIG. 7, the 1st and 2nd recessed part 35a, 35b is provided in the annular collar part 34 of the sink 30, and the protrusion part 52a of the jig | tool 50 is inserted in the recessed part 35a, 35b. However, the present invention is not limited to this. For example, as in Modification 5 shown in FIG. 22, a convex portion 36 is formed on the annular flange portion 34 of the sink 30, and the convex portion 36 is formed on the jig 50. You may make it insert and engage with the recessed part 52c formed in the columnar member 52. FIG. Moreover, although not shown in figure, you may provide both the recessed part 35a and the convex part 36 in the annular collar part 34. FIG.

  Further, the shape of the sink 30 is not limited to a rectangle, and may be an elliptical shape as viewed from the bottom as in Modification 6 shown in FIG. 23, for example. In this case, the recess 35c of the annular flange 34 is preferably formed in the vicinity of both ends of the ellipse in the major axis direction and in the vicinity of both ends in the minor axis direction.

  24, only the base 31 of the annular flange 34 of the sink 30 may be thicker than the base 31 of the main body 33. Thereby, the intensity | strength around the recessed part 35a increases and positioning accuracy further improves.

  Further, as in Modification 8 shown in FIG. 25, the base 31 of the annular flange 34 of the sink 30 may be protruded back to form a thick portion, and the concave portion 35a may be formed in the thick portion. .

  Moreover, you may use the jig | tool 64 like the modification 9 shown in FIG. 26 instead of the jig | tool 50 of the said embodiment. That is, the jig 64 includes an outer fitting member 65 that fits outside the sink 30 and an inner fitting member 70 that fits inside the sink 30. The outer fitting member 65 includes a base plate 66, a plurality of short diameter plates 67 erected on the base plate 66 and extending in the minor axis direction of the sink 30, and an erection member 65 standing on the base plate 66 in the major axis direction of the sink 30. And an elongated plate 68 that extends. The short diameter plates 67 are arranged at intervals in the long diameter direction of the sink 30. The short-diameter plate 67 is formed with notches 67a into which both side walls in the short-diameter direction of the sink 30 are fitted. Further, the long diameter plate 68 is formed with notches 68a into which both side walls in the long diameter direction of the sink 30 are fitted.

  The inner fitting member 70 has a plurality of short diameter plates 71 extending in the short diameter direction of the sink 30 and a long diameter plate 72 extending in the long diameter direction of the sink 30, and the short diameter plate 71 is a long diameter of the sink 30. It is integrated with the long-diameter plate 72 in a state spaced from each other in the direction. Both ends of the short diameter plate 71 are in contact with both inner surfaces in the short diameter direction of the sink 30, and both ends of the long diameter plate 72 are in contact with both inner surfaces in the long diameter direction of the sink 30.

  When the outer fitting member 65 is fitted to the outside of the sink 30 and the inner fitting member 70 is fitted to the inside of the sink 30, the shape of the sink 30 is corrected substantially as designed by the jig 64. . Thereby, when forming the opening part 23 in the counter main body 20 on the basis of the internal peripheral surface of the sink 30, it can be set as the opening part 23 of the shape as aimed.

  In this modified example, the upper end portion of the inner fitting member 70 is formed so as to be positioned below the opening portion 33a of the sink 30, so that it does not interfere with the drilling tool B.

  Moreover, you may provide the convex part 39 which protrudes in the outer peripheral part of the annular collar part 34 of the sink 30 like the modification 10-12 shown to Fig.27 (a)-(c). In these modified examples, the upper end portion of the columnar member 52 of the jig 50 is fitted between the outer wall of the main body portion 33 and the convex portion 39 so that the convex portion 39 is engaged with the jig 50. Thereby, the sink 30 is positioned and corrected. In Modification 10 shown in FIG. 27A, the entire convex portion 39 has a two-layer structure of a base material 31 and a laminated material 32. In Modification 11 shown in FIG. 27B, only the convex portion 39 has a single-layer structure. In the modified example 12 shown in FIG. 27C, a part of the convex portion 39 excluding the tip portion has a two-layer structure of the base material 31 and the laminated material 32.

  Further, as in modified examples 13 to 15 shown in FIGS. 28A to 28C, a convex portion 39 protruding to the back side is provided on the outer peripheral portion of the annular flange portion 34 of the sink 30, and the columnar member 52 of the jig 50. The protrusion 39 can be engaged with the jig 50 by being inserted into the groove 52d formed at the upper end of the jig. In this state, the sink 30 is positioned and corrected. On the upper side of both side surfaces of the groove 52d, a guide portion 52e formed so as to become wider as it approaches the upper end is provided, so that the convex portion 39 can be easily inserted into the groove 52d. The annular flange 43 of the modification 13 shown in FIG. 28A is the same as the annular flange 43 of the modification 10, and the annular flange 43 of the modification 14 shown in FIG. The annular collar 43 of the modification 15 shown in FIG. 28C is the same as the annular collar 43 of the modification 12.

  Moreover, this invention is applicable when manufacturing various counters besides the counters for kitchens and toilets.

  As described above, the counter manufacturing method according to the present invention can be applied to, for example, manufacturing a kitchen counter or a wash counter.

DESCRIPTION OF SYMBOLS 10 Counter 20 Counter main body 23 Opening part 24 Outer reinforcement tree 25 Inner reinforcement tree 27 Pilot hole 30 Sink (tank)
31 Base material 32 Laminated material 33 Main body 33a Opening 34 Annular flange 35a First recess 35b Second recess 36 Projection 50 Jig A Drill B Drilling tool

Claims (3)

In the manufacturing method of the counter (10) in which the tank (30) having an open top is attached to the back side of the counter body (20),
After preparing the counter body (20) having no opening (23) corresponding to the opening (33a) of the tank (30), and attaching the tank (30) to the back side of the counter body (20),
In the counter body (20), a pilot hole (27) for forming the opening (23) of the counter body (20) is opened at a portion overlapping the opening (33a) of the tank (30),
Thereafter, the drilling tool (B) is inserted into the lower hole (27) of the counter body (20), and the outer peripheral surface of the roller (B2) provided at the tip of the drilling tool (B) is removed. By making contact with the inner peripheral surface of the tank (30), the drilling tool (B) is moved with reference to the inner peripheral surface of the tank (30 ). The counter blade (20) is cut by rotationally driving a vertical blade (H2) provided on the base end side of the roller (B2) to open the tank (30) in the counter body (20). An opening (23) continuous with the portion (33a) is formed, and at the same time as the formation of the opening (23), the opening (23) is provided on the base end side with respect to the vertical blade (H2) of the drilling tool (B). The counter body (20) is rotated by driving the tapered blade (H1). Counter manufacturing method characterized by chamfered peripheral edge of the opening (23) of. The counter manufacturing method according to claim 1,
A collar (34) is formed around the opening (33a) of the tank (30),
A substrate (51), and a columnar member (52) which is erected on the substrate (51) and supports the flange (34) of the tank (30) from the back side, and is disposed on the columnar member (52). Prepare a jig (50) with protrusions (52a, 52b) or recesses formed on the end face,
The flange portion (34) which is formed on the positioning recesses (35a, 35b) or at least one of the protrusions, are engaged with the projections (52a, 52 b) or recess of the jig (50) above tank After positioning (30) on the jig (50), the tank (30) is attached to the back side of the counter body (20) together with the jig (50), and then the pilot hole (27) is opened. Thereafter, an opening (23) is formed in the counter body (20). The counter manufacturing method according to claim 2,
The counter (30) has a multilayer structure, the back layer is a norbornene-based resin layer, and the back layer is provided with at least one of positioning concave portions (35a, 35b) or convex portions. Method.

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