JPS6113662Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an opening/closing device for an automatic sliding door used for windows of casings of various processing machines.

In general, automatic sliding doors are opened and closed either by moving the main body of the door horizontally and vertically, respectively, by separate drive devices, or by sliding it along the window. However, the former switchgear requires two types of drive devices for horizontal and vertical movement, making the mechanism complex and large-scale, and the latter switchgear suffers from wear on the sliding surface due to sliding movement. However, there are disadvantages in that the sealing members and the like must be replaced frequently. The present invention was completed with the aim of providing an opening/closing device for a sliding automatic opening/closing door that does not have the above-mentioned drawbacks, and the illustrated embodiment will be described in detail below. Reference numeral 1 denotes a window provided in a wall 2 of a casing of various processing machines, and a sealing member 4 is annularly embedded in a window frame 3 formed around the periphery of the window 1. Reference numeral 5 denotes a door main body for opening and closing the window portion 1, and a plate member 6 is attached to the front side of the door main body 5, which is the side facing the window portion 1, with bolts 8 via a frame-shaped pedestal 7. Further, on both sides of the door main body 5, a plurality of pairs of rollers 9 are rotatably supported at approximately equal intervals in the vertical direction, which is the direction of movement of the door main body 5, and furthermore, at the center of the back surface of the door main body 5, A pair of support brackets 10 are fixed at a predetermined interval in the left-right direction, and a connecting pin 11 is horizontally suspended on the support brackets 10, and an L-shaped link 1 is attached to the connecting pin 11.
2 are rotatably connected to each other, and a support shaft 13 is rotatably inserted into the middle of the link 12, and a guide roller 14 is rotatably inserted into both ends of the support shaft 13. pivoted and link 1
The other end of the piston rod 15a of the lifting cylinder 15 is rotatably connected to the other end of the piston rod 15a through a rod bracket 16 and a pin 17. Reference numeral 18 denotes a plurality of support legs 20 protruding from the frame 19.
There are two inner guide rails provided parallel to each other on both sides of the outside of the window part 1, and the inner guide rails 18 have a length necessary for movement of the door main body 5 to open and close the window part 1, The rollers 9 are slidably engaged with the pair of inner guide rails 18, and the outer surface of the inner guide rails 18 is formed with a lower end shorter than the inner guide rail 18. An outer guide rail 22 having a wall surface 21 is provided extending parallel to the inner guide rail 18, and the pair of outer guide rails 22 include the guide roller 1.
4 are slidably engaged. Reference numeral 23 denotes a pair of symmetrical helical springs that are loosely inserted into the support shafts 13 at both sides of the link 12, and one end of the helical springs 23 is hooked onto the connecting pin 11, and the other end is connected to the support shafts. 13, and when the window portion 1 is opened, the upper end of the door main body 5, whose upper end is inclined inward, slides into contact with the sealing member 4. In order to prevent the sealing member 4 from being worn out, the spring action of the helical spring 23 pulls the door main body 5 away from the window portion 1 so that the door main body 5 comes into sliding contact with the sealing member 4 and sealing the sealing member 4. Prevents sliding wear.

Next, the opening/closing operation of the door main body 5 in the thus configured device will be explained. In the state shown in FIG. 3 in which the door main body 5 is moved outwardly facing the window portion 1 and the support shaft 13 is in contact with the wall surface 21, when the lifting cylinder 15 is further pushed out and operated, the link 1
2 is rotated clockwise about the support shaft 13 against the helical spring 23, and the door main body 5 is rotated by the connecting pin 1.
1. The door main body 5 is moved inward through the support bracket 10, and the second door main body 5 is attached to the window frame 3 through the sealing member 4.
As shown in the figure, the window portion 1 is completely closed by being crimped in an airtight manner. At this time, spring energy is stored in the helical spring 23 in the direction of pulling the door main body 5 apart. Next, when the lifting cylinder 15 is retracted in the state shown in FIG. 2 with the window 1 closed, the link 12 is rotated counterclockwise and the pressing force of the helical spring 23 is removed. The door main body 5 is pulled outward and placed in a state substantially parallel to the inner guide rail 18, and the guide roller 14 is engaged with the outer guide rail 22 while the inclination of the inner guide rail 18 is regulated by the roller 9. Window part 1
The object is moved upward to a position away from the object. Also window part 1
When closing, the elevating cylinder 15 is pushed out to move the door main body 5 to a position facing outward from the window part 1 to bring it to the initial state, and the above-mentioned operation is repeated thereafter.

In short, the present invention rotatably supports rollers on both sides of the main body of the door that opens and closes the window, and connects the piston rod rotatably to the center of the back of the main body of the door via a rotatably supported link. At the same time,
A support shaft is provided in the intermediate portion of the link so as to pass through the link, and guide rollers are rotatably provided at both ends of the link, and a helical spring is loosely inserted into the support shaft to hold its base end on the support shaft. The inner guide rails are provided with two inner guide rails extending parallel to each other on both sides of the outer side of the window portion 1. The roller is slidably engaged with the inner guide rail, and an outer guide rail having a lower end shorter than the inner guide rail on the outer surface of the inner guide rail and having a wall surface at the lower end is also parallel to the inner guide rail. Since the guide roller is slidably engaged with the outer guide rail, the opening/closing operation is extremely simple and smooth, and the sliding wear of the sealing member etc. is eliminated, which eliminates the drawbacks of the conventional method. has been solved and is of great practical value.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a side view showing a state with the window closed, and FIG. 3 is a side view showing the state before the window is closed. 1...Window part, 5...Door main body, 9...Roller, 1
2... Link, 13... Support shaft, 14... Guide roller, 15a... Piston rod, 18... Inner guide rail, 22... Outer guide roller.

Claims (1)

[Scope of utility model registration request] Rollers 9 are rotatably supported on both sides of the door main body 5 that opens and closes the window portion 1, and a piston rod 15a is rotatably supported via a link 12 that is rotatably supported at the center of the back surface of the door main body 5. At the same time, a support shaft 13 is provided in the intermediate portion of the link 12 so as to be rotatable, and a guide roller 14 is rotatably provided at both ends of the support shaft 13.
3 is loosely inserted, and its base end is held by the support shaft 13, and its distal end is engaged so as to act on the door main body 5, and furthermore, on both sides of the outside of the window part 1, 2
Inner guide rails 18 are provided extending upwardly in parallel with each other, and the inner guide rails 18 are
The roller 9 is slidably engaged with the inner guide rail 18, and an outer guide rail 22 is provided on the outer surface of the inner guide rail 18, the lower end thereof being shorter than the inner guide rail 18, and having a wall surface 21 at the lower end thereof. An opening/closing device for a sliding automatic door, characterized in that the guide roller 14 is provided in parallel with the inner guide rail 18 and slidably engaged with the outer guide rail 22.