JP6486162B2 - Manufacturing method of rotating tread - Google Patents

Description

The present invention relates to a method of manufacturing a non-rectangular circuit board installed at a corner of a circuit staircase (curved staircase).

The step board of the surrounding staircase has a rectangular shape at the straight portion, but a plurality of steps are formed at the corner portion by a non-rectangular step board. In the example shown in FIG. 1, the corner portion is formed by a three-step tread, and in the example shown in FIG. 9, the corner portion is formed by a two-step tread. When such a staircase step board is constructed by attaching a decorative sheet on a board, for a rectangular stair step board of a straight portion, a rectangular board formed in a predetermined dimension is arranged in the longitudinal direction (stair step board). The front end surface and the rear end surface are extended in parallel with the conveying direction of the wrapping device (conveying device), and a decorative sheet is attached to the substrate surface with a pressure roller, and in parallel with the conveying direction. By pressing the decorative sheet from above the decorative sheet onto the front, rear, and back surfaces of the board, the decorative sheet wraps around from the surface of the circuit board to both sides of the back surface (front and rear end surfaces) and part of the back surface. Can be attached. However, as for the non-rectangular step board at the corner (hereinafter referred to as “turning board”), the front end face and the rear end face are not parallel. In the same device (wrapping device, pinch roller) as in the case of the rectangular stair stepping plate, the decorative sheet is wrapped around the surface of the board through both sides (front end surface and rear end surface) and part of the back surface for pasting. Can not do it.

Patent Document 1 describes a method of manufacturing a tread board by sticking a decorative sheet on a front surface, a part of a back surface, a side surface (a front end surface, a part of a rear end surface, or another surface) of a substrate. In this method, a plurality of non-rectangular tread base materials cut into a predetermined shape are arranged on the conveying means with the nose tip surfaces facing outwards, the rear end surfaces facing each other with a gap therebetween, and a decorative sheet. A sheet winding step of winding and pasting a part of the front surface, the front end surface, and the back surface, a sheet cutting step of cutting the decorative sheet along the central portion of the gap, and a decorative sheet on a part of the rear end surface and the other surface A non-rectangular round tread plate cut into a predetermined shape and the other surface are brought into contact with the positioning projections 8 and positioned on the conveying means.

Japanese Patent No. 4893265 (particularly FIG. 4)

However, according to the method described in Patent Document 1, since it is necessary to install a plurality of the same shape of the surrounding stepping board in the predetermined shape on the conveying means, the edge material and dust of the decorative sheet are positioned on the positioning projection and the surrounding stepping board. If there is a gap between the two or the cutting accuracy is poor and the dimensions of the multiple stepping plates are different, the multiple stepping plates will be installed in different directions (non-parallel directions), while the decorative sheet Since the pattern is applied in the correct direction, the pattern of the decorative sheet and the like of the decorative sheet applied to the plurality of surrounding treads appears in different directions, making it impossible to obtain a product with the same pattern.

In addition, since the sheet cradle 9b is provided only in the front in the transport direction, the decorative sheet is transported when the decorative sheet wraps around the back side from both sides in the direction orthogonal to the transport direction (step nose tip surface of the tread board substrate). At the rear of the direction, the decorative sheet loosens and causes wrinkles.

In this prior art, a technique is used in which the tread board is positioned on the transport means 9 by using the positioning protrusions 8. According to this technique, the tread board having a different shape is positioned by changing the number and the mounting position. Although there is a merit that it is possible (paragraph 0022), as described in the same paragraph, means for detachably attaching the positioning projections must be provided in the transport means, and the transport means Apart from that, a large number of positioning protrusions must be easily and stored.

Furthermore, in the illustrated embodiment, positioning is performed by using a plurality of columnar positioning projections to secure a gap 5 between the tread boards and a gap between the tread boards and the sheet cradle. Since the end surface of the tread board is only a few points (two points in the figure) spaced apart from each other, each of the tread board abuts only one point on the circumferential surface of the positioning projection, so that the end surface of the tread board is not distorted or bent. If it exists, the positioning accuracy will deteriorate, the nose tip surface will not coincide with the transport direction, and wrinkles are likely to occur when the decorative sheet is wrapped around and attached to the nose tip surface. Further, when trying to cut the decorative sheet using the gap, the positioning protrusions arranged in the gap may become an obstacle.

The problem to be solved by the present invention is that, when manufacturing a stepping board in which a decorative sheet is stuck on a substrate, the front end surface appearing on the nose of the stepping plate is from the surface of the substrate through the front end surface to the back surface. It is to provide a novel method for avoiding wrinkles that can be attached by being wrapped around a part. It is a further object of the present invention to provide a novel method capable of efficiently producing a plurality of turning plates in which the orientation of the pattern of the decorative sheet appears in the same manufacturing process.

In order to solve this problem, the invention according to claim 1 of the present application is a method for manufacturing a non-rectangular stepping plate installed at a corner portion of a stepping staircase, and includes two treadboard substrates precut into a predetermined shape. A step of attaching the decorative sheet from above, a step of adhering the decorative sheet so as to wrap around the entire surface of each substrate and at least the front end surface appearing on the nose of the stepping plate from the upper side, and a step of cutting the decorative sheet thereafter The pallet includes a placement portion for providing a placement surface on which the two substrates are placed, and a front portion and a rear portion that are disposed to protrude forward and rearward in the transport direction of the placement portion and above the placement surface. A positioning contact portion, and the front and rear positioning projections each contact a side end surface of each substrate placed on the placement surface, and a placement surface. Each placed on It has an inclined surface extending flush with the rear end surface of the plate, and the substrate contact surface is formed with a stepped portion on the upper surface side. In the conveying step, the front end surface is conveyed outward. Parallel to the direction, the side end surface is brought into contact with the substrate contact surface, and the rear end surfaces are opposed to each other with a gap therebetween, and the two substrates are set on the placement surface of the pallet, In the cutting step, the attached decorative sheet is cut at a gap on the stepped portion formed on the substrate contact surface of the positioning convex portion, and is cut at the gap between the rear end surfaces. .

The invention according to claim 2 of the present application is the method of manufacturing the swivel board according to claim 1, wherein the outer surfaces of the positioning protrusions on the front and rear sides of the pallet protrude from both sides of the mounting portion in a direction perpendicular to the conveying direction. And extending in parallel with the transport direction so as to be flush with the front end surface of each substrate placed on the placement surface.

According to the first aspect of the present invention, the decorative sheet is pasted from the surface of the substrate through the front end surface to a part of the back surface, and is attached without causing wrinkles. In addition, the product made up in the above can be provided, and the design of the surrounding step board and the surrounding staircase using the surrounding step board can be satisfactorily maintained.

According to the second aspect of the present invention, since the outer surfaces of the front and rear positioning projections of the pallet are flush with the front end surface of the substrate, the decorative sheet is wound around the entire surface of the substrate and the front end surface to the back surface. When sticking, the decorative sheet is attached in a substantially flat shape without any step from the front end surface of the substrate to the side of the positioning convex part, so the decorative sheet is attached neatly without wrinkles can do.

It is a top view which shows an example of the surrounding staircase which this invention makes object. In the manufacturing method according to an embodiment of the present invention in the case where the first and third steps used as the first step and the third step are simultaneously manufactured in the surrounding staircase of FIG. 1, a step of manufacturing two precut substrates for these surrounding steps. (A) A plan view showing a step (b) of preparing a pallet used for placing and positioning these substrates, and a step (c) of setting two substrates on the pallet at predetermined positions. is there. It is a six-sided view of the pallet used for the manufacturing method of FIG. 2, (a) is a plan view, (b) is a front view, (c) is a rear view, (d) is a bottom view, and (e) is a left side view. (F) is a right side view. A cross-sectional view taken along line AA in FIG. 2C is shown in FIG. 4A, and then a step (b) of attaching a decorative sheet so as to straddle the surface of two substrates, and then as a stair nosing of the stair step board A step (c) of winding and adhering a decorative sheet from the front end surface to the back surface that appears, and then a step of cutting the decorative sheet at the approximate width center of the stepped portion formed on the substrate contact surface of the positioning convex portion of the pallet (d) ), And the first and third round treads (e) manufactured through these steps are process explanatory views showing the AA cross-sectional views. A cross-sectional view taken along the line BB in FIG. 2 (c) is shown as FIG. 6 (a), and then a step (b) of attaching a decorative sheet so as to straddle the surface of the substrate and the positioning convex portion, and then between these steps. Step (c) for cutting the decorative sheet at the approximate center of the width of the gap, and the first step foot plate (d) manufactured through these steps, both as a cross-sectional view BB It is. It is the C section enlarged view in FIG.2 (c). In the manufacturing method according to an embodiment of the present invention in the case of simultaneously manufacturing the stepping plates used as the second step and the third step in the surrounding steps in FIG. 1, a step of manufacturing two precut substrates for these surrounding steps (A) A plan view showing a step (b) of preparing a pallet used for placing and positioning these substrates, and a step (c) of setting two substrates on the pallet at predetermined positions. is there. In the manufacturing method according to an embodiment of the present invention in the case where the first and second steps used as the first step and the second step in the turn step of FIG. 1 are manufactured at the same time, a step of manufacturing two precut substrates for the turn step plate. (A) A plan view showing a step (b) of preparing a pallet used for placing and positioning these substrates, and a step (c) of setting two substrates on the pallet at predetermined positions. is there. It is a top view which shows the other example of the surrounding staircase which this invention makes object. In the manufacturing method according to an embodiment of the present invention in the case where the first and second steps used as the first step and the second step are manufactured at the same time in the surrounding staircase of FIG. 9, a step of manufacturing two precut substrates for these stepping plates. (A) A plan view showing a step (b) of preparing a pallet used for placing and positioning these substrates, and a step (c) of setting two substrates on the pallet at predetermined positions. is there.

The present invention will be described in detail below with reference to examples.

A method for manufacturing a staircase board according to an embodiment of the present invention will be described with reference to FIGS. This manufacturing method is carried out in order to simultaneously manufacture the first step board 13 and the third step board 15 of the three-step staircase 10 shown in FIG. The three-step staircase 10 has rectangular treads 11, 12, 16, and 17 that form straight portions (the treads below treads 11 and treads above treads 17 are not shown) and non-rectangular portions that form corners. And shaped treads (around treads) 13-15. Each tread board 11 to 17 has a decorative sheet 21 made of synthetic resin or the like having a wood grain pattern (shown as a substantially parallel line at an appropriate interval in FIG. 1) on a substrate 18 made of a wood material such as plywood or MDF. It is affixed. The arrows in FIG. 1 indicate the ascending direction of the three-step staircase 10.

First, as shown in FIG. 2A, substrates 18 and 20 pre-cut into non-rectangular shapes (the same right triangle in this embodiment) of the treads 13 and 15 are produced. The substrate 18 is inserted into a front end face 18a that appears as a nose when used as the step board 13 in the staircase 10 and a tread board insertion groove (not shown) formed in a side plate (not shown) of the circuit staircase 10. A rear end surface 18c with which the lower end of a kick plate (not shown) that hangs down from the rear side of the front end of the end plate 14 positioned on the end surface 18b contacts the rear end surface 18c (invisible in the front end portion of the end plate 14 in FIG. 1). And has a right-angled triangular planar shape. Similarly, the substrate 20 is inserted into a front end face 20a that appears as a nose when used as the step board 15 in the staircase 10 and a tread board insertion groove (not shown) formed in a side plate (not shown) of the staircase 10. The rear end surface 20c (not shown in FIG. 1 is hidden behind the front end portion of the tread plate 16 in FIG. 1) and the lower end of the kick plate (not shown) that hangs down from the rear end side of the front end of the tread plate 16 positioned on the upper end surface 20b. ) And a planar shape of a right triangle.

Note that anti-skid grooves 18d and 20d are formed on the front surfaces 18f and 20f near the front ends of the substrates 18 and 20, respectively, and kick plate insertion grooves 18e and 20e are formed on the back surfaces 18g and 20g. The antiskid grooves 18d and 20d are shown in FIG. 4, and the antiskid groove 20d is shown in FIG. 6, but these are not shown in FIGS. 2 (a) and 2 (c). The upper ends of kick plates (not shown) are inserted into the kick plate insertion grooves 18e and 20e.

Further, as shown in FIG. 2B, a pallet 30 for preparing and positioning these two substrates 18 and 20 in a predetermined positional relationship is prepared. The pallet 30 is an integrally molded product made of synthetic resin provided with positioning protrusions 32 and 33 on the front and rear sides of a rectangular plate 31 having a predetermined width and length, and these front and rear positioning protrusions. Between 32 and 33, the mounting part 35 which has the mounting surface 34 which mounts the board | substrates 18 and 20 by predetermined positional relationship is formed.

In more detail with reference to FIG. 3, the positioning convex portions 32 and 33 are wider than the rectangular plate 31 and are perpendicular to the conveying direction or the longitudinal direction X (both shown in FIG. 2B). Projecting from the rectangular plate 31 on both sides. The projecting outer surfaces 32a, 32b; 33a, 33b are parallel to the transport direction X, and the front end surfaces 18a, 20a of the substrates 18, 20 are arranged so as to extend parallel to the transport direction X on both sides of the transport direction X. Become the same. Further, the thicknesses of the positioning protrusions 32 and 33 are the same as the thicknesses of the substrates 18 and 20, and when the substrates 18 and 20 are placed on the placement surface 34 of the pallet 30 as will be described later, these substrates. The surfaces 18f and 20f are flush with the surfaces of the positioning protrusions 32 and 33.

A surface 32c extending in the conveyance orthogonal direction Y from the rear end of the outer surface 32b of the front positioning convex portion 32 serves as a substrate abutting surface for abutting and positioning the side end surface 18b of the substrate 18, and the rear positioning convex portion 33. An inclined surface 33c that is inclined from the front end of the outer surface 33a with respect to the transport direction X by a predetermined angle (an angle formed by the front end surface 18a and the side end surface 18b of the substrate 18) is in contact with the side end surface 18b of the substrate 18. It becomes a substrate contact surface for positioning.

In addition, the inclined surface 32d between the outer surface 32a and the substrate contact surface 32c in the front positioning convex portion 32 has a predetermined angle with respect to the transport direction X from the rear end of the outer surface 32a (the front end surface 18a and the rear surface of the substrate 18). The inclined surface 33d between the outer surface 33b and the substrate contact surface 33c is inclined at a predetermined angle with respect to the transport direction X from the front end of the outer surface 33b. The substrate is inclined at an angle (an angle formed by the front end surface 18a and the rear end surface 18c of the substrate 18 = β) and is perpendicular to the substrate contact surface 33c.

The outer surfaces 32a, 32b; 33a, 33b and the inclined surfaces 32d, 33d of the positioning convex portions 32, 33 all appear as vertical end surfaces over the entire plate thickness, but the substrate contact surfaces 32c, 33c The lower side contact surfaces 32f and 33f with which the side end surfaces 18b and 20b of the substrates 18 and 20 abut and the side end surfaces 18b and 20b of the substrates 18 and 20 are formed. And upper non-contact surfaces 32g and 33g for providing gaps 25 (FIG. 5) and 26 (FIG. 6).

In addition, in the vicinity of the outer surfaces 32a, 32b; 33a, 33b of the positioning convex portions 32, 33, vertical grooves 60 (shown for the positioning convex portion 33 in FIG. 6) are formed in parallel therewith, but FIG. b), illustration is omitted in FIG. 2 (c) and FIG. These vertical grooves are formed so as to extend along the transport direction X in alignment with the anti-slip grooves 18d and 20d on the substrate surface when the substrates 18 and 20 are set at predetermined positions as described below.

After preparing and preparing the pallet 30 having such a shape and configuration, as shown in FIG. 2C, the two substrates 18 and 20 prepared in FIG. Placed on. At this time, the front end surfaces 18a and 20a of the substrates 18 and 20 are flush with the outer surfaces 32a and 32b; 33a and 33b of the positioning convex portions 32 and 33, and extend in parallel with the transport direction X. The substrates 18 and 20 are set so that 20b contacts the substrate contact surfaces 32c and 33c, respectively. As a result, the rear end surfaces 18c and 20c of the substrates 18 and 20 face each other, and a gap 22 having a predetermined width is formed between them. 18 and 20 are positioned. Since the height of the spacer 23 is smaller than the height of the positioning convex portions 32 and 33 (see FIG. 4), a concave groove 24 having a depth equal to the height difference is formed on the spacer 23. In addition, although the single elongate spacer 23 is shown by FIG.2 (c), you may arrange | position a some spacer at appropriate intervals (refer FIG.10 (c)).

As shown in FIG. 2C, the state when the substrates 18 and 20 are arranged in a predetermined positional relationship on the pallet 30 and the positioning is completed is shown in FIG. 4A, FIG. 5A and FIG. Is also shown. In this state, the substrates 18 and 20 have slight gaps 25 and 26 formed in the stepped portions 32e and 33e of the substrate contact surfaces 32c and 33c between the front and rear positioning convex portions 32 and 33, respectively. Since the surfaces are flush with each other and are substantially continuous, the width of the positioning protrusions 32 and 33 (the distance between the outer surfaces 32a and 33a and the outer surfaces 32b and 33b) is sufficiently larger. The decorative sheet 21 having a width is overlapped so as to cover the surfaces of the substrates 18 and 20 and the positioning projections 32 and 33 (FIGS. 4B and 5B).

The decorative sheet 21 covers the surfaces 18f and 20f of the substrates 18 and 20 and is attached so as to wrap around from the front end surfaces 18a and 20a to the back side, but as described above, the side end surfaces 18b and 20b are attached. Is inserted into a tread plate insertion groove (not shown) formed in a side plate (not shown) of the rotating staircase 10, and the rear end surfaces 18c and 20c are kicked plates (hanging down from the back side of the front end of the upper stepping plate). Since the lower end of the not-shown abuts, the side end face and the rear end face do not need to be decorated with the decorative sheet 21.

Referring to FIG. 4 which is a cross-sectional view taken along the line AA in FIG. 2C, the surface of the decorative sheet 21 from the substrates 18 and 20 to the positioning convex portions 32 and 33 as described above will be described. Overlaid so as to cover (after FIG. 4 (b), the portions protruding to both sides in the transport direction are along the front end surfaces 18a, 20a of the substrates 18, 20 and the outer surfaces 32a, 32b; 33a, 33b of the positioning convex portions 32, 33. 4 (c)) As described above, the front end surface 18a of the substrate 18 has an outer surface 32b of the positioning projection 32 and a small gap 25, and The front end surface 20a of the substrate 20 is substantially flush with the outer surface 33b of the positioning convex portion 33, and similarly, the front end surface 20a of the substrate 20 is interposed between the outer surface 32a of the positioning convex portion 32 and the outer surface of the positioning convex portion 33 through a slight gap 26. Since substantially continuously 3a flush, it does not occur slack or wrinkles during folding of the decorative sheet 21.

Note that the decorative sheet 21 is adhered along the shape of the anti-slip grooves 18d and 20d of the substrates 18 and 20, but as described above, the slippage of the substrate surface is also applied to the surfaces of the positioning protrusions 32 and 33. Since a vertical groove (not shown) is formed so as to extend in the conveying direction X in alignment with the stop grooves 18d and 20d, by sticking the decorative sheet 21 against the groove bottom so as to straddle them, In addition, slack and wrinkles are prevented from occurring in the anti-slip grooves 18d and 20d. After sticking the decorative sheet 21 in this way, as shown by the downward arrow in FIG. 4 (d), the cut is made along the approximate groove width center of the groove 24 on the spacer 23.

On the other hand, referring to FIG. 5 which is a cross-sectional view taken along the line BB in FIG. 2C, as described above, the substrate contact surfaces 32c and 33c of the positioning convex portions 32 and 33 are A step formed by lower contact surfaces 32f and 33f that are in contact with the side end surfaces 18b and 20b of the substrates 18 and 20, and upper non-contact surfaces 32g and 33g that are retracted from the contact surface and do not contact the side end surfaces 18b and 20b. Drop portions 32e and 33e are formed, and gaps 25 and 26 are provided thereon. As described above, the decorative sheet 21 is overlapped so as to cover the surface from the substrates 18 and 20 to the positioning convex portions 32 and 33 (FIG. 5B), and then shown by a downward arrow in FIG. 5C. In this way, the gaps 25 and 26 are cut along substantially the width center.

As described above, after obtaining the substrates 18 and 20 with the decorative sheet 21 attached thereto, the substrates 18 and 20 are taken down from the pallet 30 and the cut ends of the cut decorative sheet 21 are separated from the surface of the substrates 18 and 20 and the rear end surface 18c, The corners 20c (Fig. 4 (d)) and the corners (Fig. 5 (c)) between the surfaces of the substrates 18 and 20 and the side end surfaces 18b and 20b are respectively cut off to obtain all of the substrates 18 and 20. Two rotating treads 13 and 15 having a decorative sheet 21 attached so as to be wound from the front surface and the front end surfaces 18a and 20a to the back surface side are obtained at the same time (FIGS. 4E and 5D). As described above, since it is not necessary to attach the decorative sheet 21 to the rear end surfaces 18c, 20c and the side end surfaces 18b, 20b of the substrates 18, 20, in this embodiment, the corners are cut as described above. However, the cut end portion of the decorative sheet 21 may be attached to the substrate rear end face or side end face.

In addition, the method of sticking the decorative sheet 21 to the substrates 18 and 20 can be performed using a wrapping apparatus as in the conventional case. That is, the pallet 30 on which the substrates 18 and 20 are placed is placed on the transport device of the wrapping device so that the outer surfaces 32a and 32b; 33a and 33b are parallel to the transport direction X, and lapping is performed. As the pallet 30 is conveyed, the decorative sheet 21 is sent out from the roll around which the decorative sheet 21 is wound, and after the adhesive is applied, it is superimposed on the surfaces of the substrates 18 and 20 and the positioning convex portions 32 and 33. The delivered decorative sheet 21 is cut into a width dimension sufficient to cover the surfaces of the substrates 18 and 20, and is separated from the roll. With respect to the substrates 18 and 20 and the positioning convex portions 32 and 33 on which the decorative sheet 21 is superimposed, the surface is a pressure roller, and the substrate front end surfaces 18a and 20a and the positioning convex outer surfaces 32a and 32b; 33a and 33b are pinch rollers. Then press each one. In this way, the decorative sheet 21 can be attached so as to go from the entire surface of the substrates 18 and 20 to the back surface side through the front end surfaces 18a and 20a.

A method for manufacturing a staircase board according to another embodiment of the present invention will be described with reference to FIG. This manufacturing method is carried out in order to simultaneously manufacture the second stepping plate 14 and the third stepping plate 15 of the three-step staircase 10 shown in FIG. Therefore, the shape of the positioning convex portions 36 and 37 for providing the mounting surface (or mounting portion) 38 for mounting the substrates 19 and 20 used for the surrounding stepping plates 14 and 15 in a predetermined positional relationship is an example. Although other than 1, the others are the same as in the first embodiment, and the manufacturing process is substantially the same, so the description thereof will be omitted.

The front positioning convex portion 36 in this embodiment includes an outer surface 36 a that is flush with the front end surface 20 a of the substrate 20, an outer surface 36 b that is flush with the front end surface 19 a of the substrate 19, and one side end surface 19 b 1 of the substrate 19. An inclined surface 36c serving as a substrate contact surface with respect to the substrate 20, an inclined surface 36d serving as a substrate contact surface with respect to the other side end surface 19b2 of the substrate 19, and an inclined surface 36e facing the rear end surface 20c of the substrate 20. The rear positioning projection 37 includes an outer surface 37a that is flush with the front end surface 20a of the substrate 20, an outer surface 37b that is flush with the front end surface 19a of the substrate 19, and a substrate contact surface with respect to the side end surface 20b of the substrate 20. And an inclined surface 37d facing the rear end surface 19c of the substrate 19. The inclined surfaces 36c, 36d, and 37c that serve as the substrate contact surfaces are formed with stepped portions in the same manner as the substrate contact surfaces 32c and 33c of the positioning convex portions 32 and 33 of the first embodiment.

As with the substrates 18 and 20, an anti-slip groove is formed on the front surface side near the front end of the substrate 19, and a kick plate insertion groove is formed on the back surface side. Longitudinal grooves aligned with the anti-slip grooves are formed, both of which are not shown.

A method for manufacturing a staircase board according to another embodiment of the present invention will be described with reference to FIG. This manufacturing method is carried out in order to simultaneously manufacture the first step board 13 and the second step board 14 of the three-step staircase 10 shown in FIG. Therefore, the shape of the positioning convex portions 39 and 40 for providing the mounting surface (or mounting portion) 41 for mounting the substrates 18 and 19b used for the surrounding stepping plates 13 and 14 in a predetermined positional relationship is an example. Although other than 1, the others are the same as in the first embodiment, and the manufacturing process is substantially the same, so the description thereof will be omitted.

In this embodiment, the front positioning convex portion 39 has the same shape as the front positioning convex portion 36 used in the second embodiment, and an outer surface 39a that is flush with the front end surface 18a of the substrate 18; An outer surface 39b that is flush with the front end surface 19a, an inclined surface 39c that is a substrate contact surface with respect to one side end surface 19b1 of the substrate 19, and an inclined surface 39d that is a substrate contact surface with respect to the other side end surface 19b2 of the substrate 19 And an inclined surface 39e facing the rear end surface 18c of the substrate 18. The rear positioning convex portion 40 includes an outer surface 40a that is flush with the front end surface 18a of the substrate 18, an outer surface 40b that is flush with the front end surface 19a of the substrate 19, and a substrate contact surface with respect to the side end surface 18b of the substrate 18. The conveyance direction orthogonal surface 40c and the inclined surface 40d facing the rear end surface 19c of the substrate 19 are provided. The inclined surfaces 39c, 39d, and 40c serving as the substrate contact surfaces are formed with stepped portions as in the substrate contact surfaces 32c and 33c of the positioning convex portions 32 and 33 of the first embodiment.

When manufacturing the stepping plates 13 to 15 in the three-step staircase 10 of FIG. 1, two decorative sheet pasting plates 13 and 15 are simultaneously manufactured by the manufacturing method of the first embodiment, and two sheets are manufactured by the manufacturing method of the second embodiment. The decorative sheet sticking treads 14 and 15 are manufactured at the same time, and the two decorative sheet sticking treads 13 and 14 are simultaneously manufactured by the manufacturing method of the third embodiment. Therefore, the manufacturing methods of the first to third embodiments are combined into one series. By carrying out, each of the two decorative sheet pasting plates 13 to 15 is manufactured.

In addition, although the vertical groove | channel aligned with the anti-slip | skid groove | channel formed in the surface of the board | substrates 18 and 19 is formed in the surface of the positioning convex parts 39 and 40, all are abbreviate | omitting illustration.

A method for manufacturing a staircase board according to still another embodiment of the present invention will be described with reference to FIGS. This manufacturing method is carried out in order to simultaneously manufacture the step plates 45 and 46 of the two-step staircase 42 shown in FIG. The two-step staircase 42 has rectangular treads 43, 44, 47, and 48 that form straight portions (the treads below treads 43 and treads above treads 48 are not shown) and non-rectangular portions that form corners. And treads (circular treads) 45 and 46 having a shape (right triangle shape). Each tread board 43 to 48 has a decorative sheet made of synthetic resin or the like having a wood grain pattern (shown as a substantially parallel line at appropriate intervals in FIG. 9) on a substrate made of a wood material such as plywood or MDF. Being done. The arrows in FIG. 9 indicate the ascending direction of the two-step staircase 42.

This manufacturing method is carried out in order to simultaneously manufacture the two step plates 45 and 46 of the two-step staircase 42 shown in FIG. Therefore, the shape of the positioning convex portions 52 and 53 provided on the pallet 51 to provide a mounting surface (or mounting portion) 54 on which the substrates 49 and 50 used for the surrounding step boards 45 and 46 are mounted in a predetermined positional relationship. Is different from the first embodiment.

As shown in FIG. 10A, the board 49 for the tread board 45 is pre-cut so as to have a planar shape of a right isosceles triangle, and the front end face 49a appears as a nose when used as the tread board 45 in the staircase 42. And a side end face 49b inserted into a tread board insertion groove (not shown) formed in a side plate (not shown) of the surrounding staircase 42, and a kick board hanging from the front end back side of the tread board 46 positioned on the upper side of the side end face 49b. It has a rear end surface 49c (not shown in FIG. 9 hidden behind the front end portion of the tread plate 46) with which the lower end of the lower end of the tread plate 46 abuts. The board 50 for the step board 46 is also pre-cut so as to have the same right-angled isosceles triangular plane shape, and when used as the step board 46 in the surrounding staircase 42, the front end face 50a that appears as a nose and the side plate (see FIG. A side end face 50b inserted in a tread board insertion groove (not shown) formed in a not shown) and a lower end of a kick board (not shown) hanging from a front end back surface side of the tread 46 positioned on the upper side thereof abut. And a rear end face 50c (invisible in the front end portion of the tread plate 46 in FIG. 9).

As shown in FIG. 10B, the pallet 51 is used to place these two substrates 49 and 50 in a predetermined positional relationship. Like the pallet 30 of the first embodiment, the pallet 51 has a predetermined width and length. It is an integrally molded product made of synthetic resin in which positioning projections 52 and 53 are provided on the front and rear sides of a rectangular plate having a length, and between the front and rear positioning projections 52 and 53, a substrate 49, A mounting surface (or mounting portion) 54 for mounting 50 in a predetermined positional relationship is formed.

In this embodiment, the front positioning convex portion 52 corresponds to the outer surface 52 a that is flush with the front end surface 50 a of the substrate 50, the outer surface 52 b that is flush with the front end surface 49 a of the substrate 49, and the side end surface 49 b of the substrate 49. It has a conveyance direction orthogonal surface 52c that serves as a substrate contact surface and an inclined surface 52d that faces the rear end surface 50c of the substrate 50. The rear positioning projection 53 includes an outer surface 53a that is flush with the front end surface 50a of the substrate 50, an outer surface 53b that is flush with the front end surface 49a of the substrate 49, and a substrate contact surface with respect to the side end surface 50b of the substrate 50. And an inclined surface 53d facing the rear end surface 49c of the substrate 49. The inclined surfaces 52c and 53c serving as the substrate contact surfaces are formed with step-down portions in the same manner as the substrate contact surfaces 32c and 33c of the positioning convex portions 32 and 33 of the first embodiment.

After preparing and preparing the pallet 51 having such a shape and configuration, as shown in FIG. 10C, the two substrates 49 and 50 prepared in FIG. Placed on. At this time, the front end surfaces 49a and 50a of the substrates 49 and 50 are flush with the outer surfaces 52a and 52b; 53a and 53b of the positioning convex portions 52 and 53, and extend in parallel with the transport direction X. The substrates 49 and 50 are set so that 50b contacts the substrate contact surfaces 52c and 53c, respectively. In this way, the rear end faces 49c and 50c face each other in parallel, and a gap 55 having a predetermined width is formed between them. Therefore, a spacer 56 having the same width is inserted into the gap 55, and the substrate 49 is inserted. , 50 are positioned. Since the height of the spacer 56 is smaller than the height of the positioning convex portions 52 and 53, a concave groove 57 having a depth equal to the height difference is formed on the spacer 56. In FIG. 10C. Although the plurality of short spacers 56 are arranged at appropriate intervals, a single long spacer may be arranged as in the first embodiment (see FIG. 2C).

The decorative sheet attaching step and the decorative sheet cutting step after the substrates 49 and 50 are placed and positioned on the placement surface 54 of the pallet 51 as shown in FIG. 10C are the same as those described in the first embodiment. Since it is substantially the same, description is abbreviate | omitted. A decorative sheet is affixed to the substrates 49 and 50 so as to be wound from the entire front surface and the front end surfaces 49a and 50a to the back surface, and the rear end surfaces 49c and 50c are cut by the concave grooves 57 on the spacer 56 to form side end surfaces 49b, About 50b, it cuts by the clearance gaps 58 and 59 which appear in the step part of the board | substrate contact surfaces 52c and 53c. According to this embodiment, the two decorative sheet pasting steps 45, 46 in the two-step staircase 42 are simultaneously manufactured in a single manufacturing process.

Similarly to the substrates 18 to 20 used in Examples 1 to 3, the substrates 49 and 50 used in this example also have anti-slip grooves formed on the front surface side near the front end and on the back surface side. Is formed with a groove for inserting a kick plate, and a vertical groove aligned with the anti-slip groove is formed on the surface of the positioning convex portions 52 and 53, both of which are not shown.

10 Steps 11 and 12 around the third step Step plate 13 at the straight portion First step step plate 13a Side end of the front end surface (step nose) 13b Side end of the rear end surface 13c Side end 14 inserted into the tread plate insertion groove of the side plate Second step 14a, 14b Side edge 14c inserted into the tread board insertion groove of the side plate 14c Side end of the front end face (nosing) 14d Side end 15 of the rear end face Third stepping board 15a Side end of the front end face (nosing) 15b Rear Side end of end face 15c Side end 16, 17 inserted into tread insertion slot of side plate Tread 18 of straight portion 18 Tread board 13a Front end surface (nosing tip surface)
18b Side end surface 18c Rear end surface 18d Non-slip groove 18e Kick plate insertion groove 18f Surface 18g Back surface 19 Substrate plate 14a 19a Front end surface (front end surface of the nose)
19b1, 19b2 Side end surface 19c Rear end surface 19d Non-slip groove 19e Kick plate insertion groove 19f Front surface 19g Back surface 20 Substrate 20 t board 15a Front end surface (nosing tip surface)
20b Side end surface 20c Rear end surface 20d Non-slip groove 20e Kick plate insertion groove 21 Decorative sheet 22 Gap between the rear end surfaces of the substrates (gap)
23 Spacer (long)
24 Grooves 25 and 26 on the spacer A clearance 30 formed by the stepped portion of the positioning convex portion Pallet 31 Rectangular plate 32 Front positioning convex portion 32a Outer surface 32b Outer surface 32c Substrate contact surface 32d Inclined surface 32e Stepped portion 32f Contact Surface 32g Non-contact surface 32h Surface 33 Rear positioning projection 33a Outer surface 33b Outer surface 33c Substrate contact surface 33d Inclined surface 33e Stepped portion 33f Contact surface 33g Non-contact surface 33h Surface 34 Mounting surface 35 Mounting portion 36 Front positioning Convex portion 36a Outer surface 36b Outer surface 36c Substrate abutting surface 36d Substrate abutting surface 36e Inclined surface 37 Rear positioning convex portion 37a Outer surface 37b Outer surface 37c Substrate abutting surface 37d Inclined surface 38 Mounting surface
39 Front positioning convex portion 39a Outer surface 39b Outer surface 39c Substrate contact surface 39d Substrate contact surface 39e Inclined surface 40 Rear positioning convex portion 40a Outer surface 40b Outer surface 40c Substrate contact surface 40d Inclined surface 41 Mounting surface (mounting portion)
42 Steps 43 and 44 around the second step Step plate 45 at the straight portion First step step plate 13a Side end of the front end surface (nose) 13b Side end of the rear end surface 13c Side end 46 inserted into the tread plate insertion groove of the side plate Second step Side plate 14a, 14b Side end 14c inserted into the side plate insertion groove 14c Front end surface (nosing) side end 14d Rear end surface side end 47, 48 Straight portion tread 49 Substrate 45 substrate 49a Front end surface (nosing tip) surface)
49b Side end surface 49c Rear end surface 50 Substrate 46 tread board 46a Front end surface (nosing tip surface)
50b Side end surface 50c Rear end surface 51 Pallet 52 Front positioning convex portion 53 Rear positioning convex portion 54 Mounting surface (mounting portion)
55 Clearance 56 Spacer (short)
57 Grooves 58, 59 Clearance 60 Vertical groove X Transport direction (longitudinal direction)
Y Transport orthogonal direction (width direction)

Claims (2)

A method of manufacturing a non-rectangular stepping plate installed at a corner of a rotating staircase, the step of transporting two pre-cut stepping board substrates on a pallet and conveying the decorative sheet from above Including a step of adhering so as to wrap around from the entire front surface and at least the front end surface appearing on the nose of the stepping plate to the back surface, and then a step of cutting the decorative sheet, wherein the pallet mounts the two substrates A mounting portion for providing a surface, and front and rear positioning convex portions arranged to protrude above and from the mounting surface on the front and rear in the transport direction of the mounting portion, and these front and rear positioning convex portions Are each a substrate contact surface that contacts and positions the side end surface of each substrate placed on the placement surface, and an inclination that extends flush with the rear end surface of each substrate placed on the placement surface. A surface, and the A stepped portion is formed on the upper surface side of the plate contact surface, and in the transport step, the front end surface faces outward and parallel to the transport direction, the side end surface contacts the substrate contact surface, and the rear surface The two substrates are set on the mounting surface of the pallet with the end surfaces facing each other with a gap between them, and in the cutting step, the attached decorative sheet is attached to the substrate contact surface of the positioning convex portion. A method for producing a turn board, comprising: cutting at a gap on the stepped portion formed in the step, and cutting at the gap between rear end surfaces. Each outer surface of the positioning protrusions at the front and rear of the pallet protrudes from the mounting portion in both directions in a direction orthogonal to the transport direction and extends in parallel with the transport direction, and the front end surface of each substrate placed on the placement surface The method for manufacturing a turn board according to claim 1, wherein the stepping board is provided so as to be flush with each other.