JPH0436538B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application and Summary of the Invention] The present invention relates to a method for manufacturing a so-called shutter-type bath lid, in which a large number of hollow bars are arranged in parallel and these hollow bars are connected in a flexible manner. This enables efficient production and also enables reliable closing of the open portions at both ends of the hollow crosspiece.

[Prior art and its problems] Japanese Utility Model Application No. 60-195594 discloses a bath lid in which a large number of hollow crosspieces are arranged in parallel, these hollow crosspieces are connected in a flexible manner, and a pattern is applied to the surface. There is.

As shown in FIGS. 6 and 7, hollow beams 10, 10 made of hard synthetic resin molded by extrusion are arranged in parallel on a lower sheet 12 made of soft synthetic resin. A covering sheet 11 made of soft synthetic resin is covered from the upper surface of the hollow crosspiece 1.
The bath lid 1 is manufactured by welding the overlapped portions of the covering sheet 11 and the lower sheet 12 located on the outer periphery of each of the sheets 0 and 10.

According to this method, the covering sheet 11 is made transparent by printing on the surface of each of the hollow bars 10, 10, or when the covering sheet 11 is a sheet with a pattern, the surface of the bath lid is printed. A pattern can be applied.

However, when using this method, the hollow crosspiece 1
When No. 0 and No. 10 are open at both ends, there is a problem that the portion of the covering sheet 11 that corresponds to the open portion is weak, and the covering sheet 11 in that portion is damaged during use. As shown in FIG. 8, if the open ends of the hollow crosspieces 10, 10 are sealed with plugs 13, 13,
This inconvenience is solved, but in this case, after covering the covering sheet 11, this covering sheet 1
Openings for inserting the plugs 13 must be provided separately in the portions corresponding to the open ends of the hollow crosspieces 10, 10, and this operation becomes very troublesome.

[Technical Problem] The present invention is directed to ``a large number of hollow crosspieces 10, 1 with both ends open.
0 covers the surface of the bath lid which is bendably connected at the lower end of its cross section with the covering sheet 11, and the hollow crosspiece 1
In the method for manufacturing a shutter-type bath lid in which both ends of the tubes 0 and 10 are closed with plugs 13, a covering sheet is used to easily form an opening for inserting the plugs 13. The technical problem is to form an opening by finishing the entire surface after coating 11.

[Technical Means] The technical means of the present invention taken to solve the above technical problems are as follows.
A bath lid 1 whose width in the length direction is set longer than the finished dimension is provided, and a soft synthetic resin covering sheet 11 is attached to the surface side of the bath lid 1 along the unevenness of the surface of the bath lid 1. After that, the whole was finished and cut into the final shape, and then the plugs 13 were attached to the open portions at both ends of each hollow crosspiece 10.

[Effect] The above technical means works as follows.

In the semi-finished state where the bath lid surface is covered with the covering sheet 11, the width in the longitudinal direction (hereinafter referred to as vertical width) of the hollow crosspiece 10 in its planar shape is larger than the final dimension. In this state, when both end edges in the vertical width direction are cut by a predetermined dimension, the vertical width is finished to the final dimension. Since the hollow crosspiece 10 is a hollow body with both ends open, both ends of the hollow crosspiece 10 will be in an open state by the finishing cutting. That is, even if both ends of the hollow crosspiece 10 are covered with the covering sheet 11 at the end of the covering step of the covering sheet 11, an opening for inserting the plug 13 is formed by the finishing cut. That will happen.

[Effects] Since the present invention has the above configuration, it has the following unique effects.

When the coating process of the coating sheet 11 is completed,
Even if both ends of the hollow crosspiece 10 are covered with the covering sheet 11, an opening for inserting the plug 13 is formed by the finishing cut, so it is not necessary to insert the plug 13 as in the conventional case. There is no need to form separate openings for inserting the plug body 13, and the opening for inserting the plug body 13 can be formed easily and in a short time, improving production efficiency.

Moreover, since both ends of the hollow crosspiece 10 are finished cut at the same time as the covering sheet 11 after being covered with the covering sheet 11, the flatness of the opening edge is high, and when the plug body 13 is attached by high-frequency welding, the flatness of the opening edge is high. Adhesion strength becomes sufficient.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 5.

In the first embodiment, a patterned soft synthetic resin cover sheet 11 is coated on the uneven surface of a bath lid 1 whose vertical width is set to be longer than the finished dimension, and this is applied using the suction force of air. The coating is applied, and then the whole is finished and cut into the final shape, and finally each hollow crosspiece 1
In this method, plugs 13 are attached to the open portions at both ends of the 0.

As shown in FIG. 1, the applicator used in this method uses the upper wall of a cavity 30 connected to the suction side of an air pump 20 as a mounting table 3, and an air circuit 2 to the cavity 30.
A pressure detection means 21 is inserted into the pressure detection means 21. or,
The mounting table 3 is made of a perforated plate such as punched metal having a large number of holes 31, 31, and a suction port 32 for connecting to the air pump 20 is formed on the side surface of the cavity 30. On the other hand, a fixing frame 4 is provided on the mounting table 3 to hold the covering sheet 11 in an airtight manner.

In this attachment machine, first, an adhesive is applied to the uneven surface of the covering sheet 11 or the bath lid 1, and the bath lid 1 is placed in a fixed position on the mounting table 3 with the uneven surface facing upward.
A covering sheet 11 larger than the bath lid 1 is placed over the bath lid 1, and the periphery of the covering sheet 11 is attached to the fixing frame 4.
Press airtightly with the air pump 20 to fill the empty chamber 3.
Aspirate the air inside 0. As a result, the holes 31, 3
Air between the cover sheet 11 and the upper surface of the mounting table 3 is sucked through the cover sheet 1 , and finally the cover sheet 11 comes into close contact with the bath lid 1 . Covering sheet 11 is bath lid 1
When the pressure in the chamber 30 is completely brought into close contact with the air, the pressure in the chamber 30 drops rapidly, and when this pressure drops to the set pressure of the pressure detection means 21, the air pump 20 is stopped by the output of the pressure detection means 21. This results in
The surface of the covering sheet 11 will be coated and bonded.

Subsequently, both ends of the hollow crosspiece 10 are opened by cutting the entire shape with a cutting machine,
Finally, as shown in FIG. 5, by inserting and welding the plugs 13 into the open ends of the hollow crosspiece 10, a shutter-type bath lid with a pattern on the surface is completed.

The second embodiment is a soft synthetic resin covering sheet 1 on which a pattern is applied by the discharge pressure of an air pump 20.
1 is coated and adhered to the uneven surface of the bath lid 1 in a heated state.

As shown in FIG. 2, the applicator used in this method is provided with a burner 5 for heating suction air in an air circuit 2 connected to the discharge side of an air pump 20 and connected to a downwardly open pressure chamber 60. The pressure chamber 6
The pressure cover 6 constituting the pressure chamber 60 is raised and lowered by a cylinder 61, and a pressure detection means 21 that detects the pressure inside the pressure chamber 60 and stops the air pump 20 when the pressure reaches a certain level is installed. It is provided on the wall of the cover 6. On the other hand, the mounting table 3 has a large number of holes 31 on the top surface, similar to the first embodiment.
31 are drilled.

In this case, the bath lid 1 is placed in a fixed position on the mounting table 3 with the uneven surface facing upward, and the bath lid 1 is placed on top of the mounting table 3.
A larger cover sheet 11 is placed over it and the pressure cover 6 is pressed down by the cylinder 61. As a result, the periphery of the pressure cover 6 presses the periphery of the covering sheet 11 against the mounting table 3 in an airtight manner.

Next, heated air heated by the burner 5 is sent into the pressure chamber 60 by the air pump 20.

At this time, since the pressure cover 6 airtightly presses the periphery of the covering sheet 11, the pressure on the pressure chamber 4 side of the covering sheet 11 becomes higher than the pressure on the lower surface side.
The cover sheet 11 is finally pressed onto the bath lid 1 due to the escape of air from its lower surface.

From this point on, the pressure inside the pressure cover 6 begins to rise, and when the pressure reaches a constant level, the pressure detection means 21 is activated and the air pump 20 is stopped.

In addition, an adhesive is applied to the uneven surface of the covering sheet 11 or the bath lid 1 in the process before pressing the covering sheet 11. And the process of finishing cutting, and further the stopper body 1
3 is installed in the same manner as in the first embodiment.

Furthermore, in this embodiment, since heated air is sent into the pressure cover 6, the covering sheet 1
1 is easy to stretch, and the covering sheet can be pressed onto the bath lid surface with a small amount of pressure.

In the third embodiment, the hollow crosspiece 10,
10 extension pieces 1 made of soft synthetic resin that connect each other
Cover sheet 11 on 5, 15 or connecting pieces 16, 16
This is a method of welding and integrating it into the bath lid 1.

In this method, as shown in FIGS. 3 and 4, the applicator for coating and adsorbing the covering sheet 11 on the surface of the bath lid 1 is the same as that in the first embodiment. This is equipped with a high frequency welding device 80.
is added.

The high frequency welding device 80 horizontally moves a high frequency generator 81, a welding electrode 82 serving as an output end of the high frequency generator 81, an air cylinder 83 for raising and lowering the high frequency generator 81, and a holding base of the air cylinder 83. It consists of a feed screw 85 and a driving means 86 for rotating the feed screw 85. In this case, after the coating sheet 11 is adsorbed onto the surface of the bath lid 1 using an applicator, extension pieces 15, 15 extending from the edges and hollow crosspieces 10, 10 are attached.
The welding electrode 82 is pressed against the connecting pieces 16, 16 that join together, the high frequency generator 81 is operated, and the covering sheet 1
1 is welded to these extension pieces 15 or connection pieces 16. Thereby, the covering sheet 11 is integrated with the bath lid 1. In this welding process, the high frequency generator 81 and the crimp pole 82 are stopped at the positions of the extension piece 15 and the connection piece 16 of the bath lid 1, and the internal pressure of the chamber 30 is kept at a constant negative pressure state by the air pump 20. While leaving the bath lid 1 in place, remove the extension piece 1 from one edge of the bath lid 1.
5 or the parts corresponding to the connecting pieces 16 are sequentially welded. At this time, the combination of the feed screw 85 and the driving means 86 functions as a moving means for intermittently moving the high frequency generator 81.

After welding is completed at each of the extension pieces 15, 15 and the connecting pieces 16, 16, finish cutting is performed in the same manner as in the first and second embodiments, and the plug body 13 is attached to the open ends of the hollow crosspiece 10. Then, the bath lid is completed.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the applicator used in the first embodiment of the present invention, Fig. 2 is an explanatory diagram of the applicator used in the second embodiment of the present invention, and Fig. 3 is an explanatory diagram of the applicator used in the third embodiment of the present invention. An explanatory diagram of the apparatus used, FIG. 4 is a detailed diagram of the welding process of the third embodiment of the present invention, FIG. 5 is an exploded view of the main parts of the bath lid manufactured by the method of the present invention, and FIGS. 6 to 8
The figure is an explanatory diagram of a conventional example, and in the figure, 1... bath lid, 10... hollow crosspiece, 11... covering sheet, 13... plug body.

Claims (1)

[Claims] 1 A coating sheet 11 is coated on the surface of a bath lid in which a large number of hollow bars 10, 10 with both ends open are connected in a flexible manner at the lower end of the cross section, and both ends of each of the hollow bars 10, 10 are attached to a plug body 13. In a method for manufacturing a shutter-type bathtub lid that is twisted and closed,
The bath lid 1 has a lengthwise width of the hollow crosspiece 10 in the overall shape set to be longer than the finished dimension, and a soft synthetic resin covering sheet 11 is applied to the surface side of the bath lid 1 to create irregularities on the surface of the bath lid 1. The coating is applied along the lines, and then the whole is cut into the final shape.
Next, plugs 13 are inserted into the open portions at both ends of each hollow crosspiece 10.
A method for manufacturing a shutter-type bath lid that is fitted with a.