JPS6354240B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sound, electromagnetic wave, etc. impermeable chamber that completely blocks out sound, electromagnetic waves, etc. for inspection and adjustment of products in the middle of a production line, etc.

Conventionally, in the production of electrical products, as shown in Fig. 1, in an assembly process 1 that includes sub-assembly to main rough assembly, each board and parts to which electronic parts such as resistors are attached are assembled, and then in an inspection and adjustment process 2, for example, In the case of a tape recorder with a radio, the electrical characteristics of the product are measured using airborne radio waves, sensitivity, noise measurements, etc. in an electromagnetic shield room, and the sound quality, etc. are measured in a soundproof room.
After inspecting and adjusting for noise, mechanical noises, lighting conditions on the front panel surface, etc., the product was transported on a single conveyor to the next process 3, such as packaging and shipping.
These non-transparent rooms such as shielded rooms, soundproof rooms, and soundproof shielded rooms are designed to block external sounds and electromagnetic waves so that they do not affect indoor inspections and adjustments. This prevents the sounds generated inside the room from flowing outside. Since a single long conveyor is used in the line, the impermeable chamber is generally installed in the middle of the conveyor, or is installed separately near the conveyor. . However, in the former case, if the conveyor is being driven during inspection adjustment in the opaque chamber, noise etc. will be generated, which is inconvenient.
Also, for this reason, it is not possible to stop the conveyor and stop the entire work flow. Therefore, it is impossible to completely close the product loading/unloading entrance with a closing plate, and as shown in FIG. An attempt has been made to isolate it from the outside using a shielding member 9 provided with a piece of material, but this cannot be done completely. Also,
In the latter case, the user reaches outside to pick up the product on the conveyor, closes the closing plate at the loading/unloading entrance to seal it, and then opens the closing plate to return the product onto the conveyor. Although it is possible to completely seal the product, Since the closing plate must be opened and closed for each task, work efficiency is poor,
Moreover, it requires a large installation area.

The present invention has been made in view of the above-mentioned drawbacks and has been made to solve the problems.The present invention is designed to eliminate noise and electromagnetic waves when products are transported into a room from the outside or from the room to the outside, and can completely block the inside and outside of the room. It provides an impermeable chamber such as

Next, as an example of the present invention, a soundproof room is shown in Figs.
This will be explained in detail based on the drawing shown in FIG.

In the figure, reference numeral 10 denotes a chamber body, and this chamber body 10 is formed of a rectangular parallelepiped-shaped wall body 11 made of a sound insulating material that blocks sound. Reference numeral 12 designates a window portion, and a pair of the window portions 12 are provided on the opposing walls 11, 11.
Products are carried in from one of the machines 2 and 12 and carried out from the other. Reference numeral 13 denotes a closing plate for closing the window portion 12. Like the wall body 11, the closing plate 13 is formed of a board made of a soundproofing material, and is provided with a product check window 13a. Reference numeral 14 denotes a guide frame for the closing plate, and this guide frame 14 is disposed on both side edges of the opening edge of the window portion 12, the lower edge, and an upper extension of both side edges, and is formed into an L-shaped cross section so that the closing plate 13 It is designed to slide up and down. 15 is an opening/closing means, and this opening/closing means 15 has an air cylinder 16 fixed in the vertical direction on the wall 11 above the window portion 12;
The tip of the slide shaft 17 of the air cylinder 16 is fixed to an L-shaped metal fitting attached to the upper edge of the closing plate 13. 18 is a pipe connected to the air cylinder 16. Reference numeral 19 denotes a conveying means, and this conveying means 19 has bases 20 and 21 fixed to the wall 11 inside the lower edge of the window part 12 via an L-shaped bracket in cross section, and a shaft 22 rotatably attached to both bases 20 and 21. , 23 are provided, sprockets 24 are fixed to both ends of the shafts 22, 23, chains 25, 25 are routed around the sprockets 24 of both shafts 22, 23, and the product 26 is placed above between the chains 25, 25. The pallet 27 to be placed is placed and conveyed.
Reference numeral 28 denotes a chain guide/support frame, and the chain 25 slides in a groove formed on the upper surface of the frame 28. Reference numeral 29 denotes a drive motor. This motor 29 is fixed to the lower surface of the base 21. A drive shaft 30 of this motor 29 is transmitted to a sprocket 33 of an intermediate shaft 32 via a chain 31, and furthermore, the intermediate shaft 32 is connected to a chain 34. The shaft 23 is rotated through. 35 is a palette detector. 36 is a transition roller, and this roller 36 is rotatably provided at the lower edge of the window portion 12 on the outer surface of the wall 11 by a set of support pieces. 37 is a parts shelf, 38 is an entry/exit door, and this door 38 is provided with a window 38a;
9,40 is the chain conveyor of the production line, 41
42 is a cooler indoor unit, and 42 is a cooler outdoor unit.

The present invention is constructed as described above, and its operation will be explained. When the pallet 27 on which the products 26 are placed is conveyed by the conveyor 39, the pallet 27 enters the interior through the window portion 12 and passes through the conveying means 19. transported by. At this time, the closing plates 13 of both window portions 12 are normally kept open. and,
When the pallet 27 is further fed by the internal conveying means 19 and the pallet 27 operates the pallet detector 35, the air cylinders 16, 16
Air is pumped into the container and the slide shaft 17 is moved downward to completely seal the window 12 with the closing plate 13. At the same time, the motor 29 is stopped to stop the conveyance of the pallet 27, and the product 26 is inspected for noise, etc. Perform inspection and adjustment work. Thereafter, the switch is operated to operate the air cylinder 16, move the closing plate 13 upward, and open the window 12. At the same time, the motor 29 is started to transport the pallet 27 out of the window 12 and onto the conveyor 40. Transport to the next process. During the inspection, the pallet 27 conveyed by the conveyor 39 is stopped by a stopper at its end, and when the inspection is completed, the stop of the pallet 27 is released in conjunction with the upward movement of the closing plate 13, and the chamber main body 10 is stopped. sent inside.

It should be noted that the present invention is not limited to the above-described embodiments, and may be applied to an electromagnetic wave shielding room in which the wall body 11 is made of iron and has a large number of small holes for ventilation. The number of openings is not limited to two, but it is sufficient that at least one or more openings are provided.Furthermore, the closing plate may be opened on one side, and the opening/closing means may be a hydraulic cylinder or the like. Furthermore, it is not limited to a free flow conveyor, and for example, a belt conveyor may be used. In this case, as shown in FIG.
The ends of the belt 44 are hung around shafts 45, 46, 47 provided outside the window 12, and the shafts 45 are driven by a drive motor via a chain 48.
The end of this belt conveyor 43 is projected outside, but when closing the closing plate 13, the conveyor 4
3 is stopped, the closing plate 13 is moved downward, and the belts 4 are closed so that the gap between the belts 44 is brought into close contact with the lower end of the closing plate 13.
4 can be pressed to completely close it and isolate it from the outside.

The present invention is constructed as described above, and includes a wall body for blocking the passage of one or more of sound, electromagnetic waves, etc., a chamber body surrounded by this wall body, and a chamber body formed on the wall body. at least one window for loading and unloading, a closing plate for closing this window, an opening/closing means for opening and closing this closing plate, and an opening/closing means for opening and closing the closing plate, which operates independently and has one end connected to the window. A conveyance means such as a conveyor placed on the conveyor, and a detector for detecting that the product placed on the conveyance means has moved to a predetermined position, and the opening/closing means Since the transport means is stopped at the same time as the transport means is activated, the window can be completely closed, and sound, electromagnetic waves, etc. can be completely blocked, and the work can be carried out reliably. In addition, since the room is equipped with a conveyor or other conveyor that operates independently and has one end located in the window, the indoor conveyor is integrally connected to the external conveyor of the production line, so it automatically The product is delivered efficiently, and since only the transportation means inside the room can be stopped and work can be carried out on the transportation means, there is no need to provide a separate space for a workbench in the room, so it does not take up much space. Furthermore, the noise caused by the driving of the conveyor during operation is not generated.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing an example of a production line, Figure 2
The figure is a perspective view of the main part of a conventional impermeable chamber, Figure 3 and the following figure show an embodiment of the present invention, Figure 3 is a perspective view, Figure 4 is a vertical side view, and Figure 5 is another example of the conveying means. FIG. 2 is a cross-sectional view of main parts showing an example. 10... Room body, 11... Wall, 12... Window, 13
...Closing plate, 15...Opening/closing means, 16...Air cylinder, 19...Transportation means.

Claims (1)

[Claims] 1. A wall for blocking the passage of one or more of sound, electromagnetic waves, etc., a chamber body surrounded by this wall, and at least one window for loading/unloading formed in the wall. a closing plate for closing this window, an opening/closing means for opening and closing this closing plate, and a conveying means such as a conveyor that operates independently and has one end located in the window. and a detector for detecting that the product placed on the conveyance means has moved to a predetermined position, and when the detector operates, the opening/closing means is actuated and the conveyance means is stopped. A room that is impermeable to sound, electromagnetic waves, etc.