JPS6219356B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that makes it possible to center a plurality of articles having different widths and lengths by simultaneously moving a centering arm using a single driving means. By changing and adjusting the length of the connecting rod that moves the center ring arm, the mounting position of the crank pin on the rotating disk, etc., the rotation of only the rotating disk is controlled, and the center ring arm in the width direction and length are adjusted. A desired difference is created in the amount of movement between the centering arm and the direction centering arm, so that centering in the width direction and length direction can be performed at the same time.

Conventional centering devices rotate a rotary disk for articles of equal width and length so that each centering arm simultaneously moves by the same distance via a connecting rod, thereby adjusting the width and length of the article. However, when centering is performed on an article that has a difference in width and length, the centering arm in the width direction and the centering arm in the length direction are driven as disclosed in Japanese Patent Publication No. 57-60740. Centering was performed using separate devices.

Therefore, two drive devices are indispensable for a plurality of articles having different widths and lengths, which has the drawback of complicating the centering operation.

The present invention simplifies the conventional centering operation by centering multiple articles of different widths and lengths using a single driving means, and furthermore, the present invention simplifies the conventional centering operation by centering a plurality of articles having different widths and lengths. To perform centering without applying any clamping pressure to the frame when holding an extremely thin plate article with a thickness of 1 to 2 m/m, which causes deformation strain even with heavy clamping pressure, between the centering arms. An embodiment of the present invention will be described below based on the drawings.
A pair of crank pins 4, 4 are inserted on the same circumference 3 on the diameter of , with the shaft center sandwiched between them, and a pair of crank pins 4, 4 are inserted on the same circumference 3 with the diameter smaller than the circumference 3, with the shaft center sandwiched on the other diameter that intersects with the above diameter. A pair of crank pins 6, 6 are inserted on the circumference 5, and one ends of connecting rods 7, 7 and 8, 8 whose lengths can be expanded and contracted are pivotally connected to each crank pin 4, 4, 6, 6. , guide rails 9, 9 arranged on the machine frame 1 on a line perpendicular to the other ends of the respective connecting rods 7, 7, 8, 8.
and a slider 11 slidingly guided by 10, 10,
Connecting pins 13, 13 and 1 to 11 and 12, 12
4 and 14, each of the sliders 11 and 11 is provided with a center ring arm 15 and 15 in the width direction of the article, and each of the sliders 12 and 12 is provided with a center ring arm 16 and 16 in the length direction of the article. be installed vertically. Note that the number of centering arms vertically disposed on each slider may be increased or decreased at any time depending on the shape of the article. The shape of the tip of the centering arm can be a flat plate shape that simply pushes the object, or an angular shape that holds the bottom surface if it is an extremely thin plate frame that is easily deformed and strained, such as a shadow mask frame. However, it is desirable to have an optimal shape depending on the shape and properties of the article.

A piston rod 1 of a double-acting cylinder device 17 fixed to the machine frame 1 is attached to one of the pair of opposing sliders 12, 12 having longitudinal centering arms.
The double-acting cylinder device connects a first cylinder and a second cylinder with different piston stroke lengths in series, connects the tip of the piston rod of the first cylinder to one slider 12, and connects the tip of the piston rod of the first cylinder to one slider 12. The tip of a two-cylinder piston rod is fixed to the machine frame 1.

Therefore, if working fluid is supplied only to the first cylinder, the slider 12 will move by the stroke length of the first cylinder piston and then stop; if working fluid is supplied only to the second cylinder, the slider 12 will move by the stroke length of the second cylinder piston. When the first and second cylinders are operated together, the piston moves by the total distance of the stroke length of both pistons and then stops.

Similarly, by arranging a plurality of such cylinders in series, a cylinder device having a large number of stroke lengths can be obtained.

Furthermore, it goes without saying that the double-acting cylinder may be used to move the rack rod that meshes with the pinion fixed to the shaft of the rotary disk.

Furthermore, it is also possible to drive the axis of the rotary disc by a motor or the like instead of the double-acting cylinder, but in this case, the moving distance of the slider can be controlled by limit switches S ₁ , S ₂ , S ₃ or electric signals. Alternatively, the motor or the like may be controlled to stop at a desired moving distance by detecting the movement distance.

As described above, the purpose of reliably and accurately stopping the slider, that is, the centering arm in the width direction and the length direction, when it has moved a desired distance is to This is to prevent deformation strain from being applied without applying even a slight clamping pressure.

Therefore, if a slider or rotating disk is driven by multiple cylinders or motors, etc., when the rotating disk rotates counterclockwise in FIG.
1, 11 and 12, 12 are connecting rods 7, 7 and 8,
8 in the centripetal direction, and the distance of movement is determined as a function of the length of the connecting rod and the mounting position of the crank pin.

That is, to explain Fig. 3, LB... Length θB of connecting rod 7 of slider 11... Mounting angle RB of crank pin 4... Radius B of crank pin 4... Distance LA between slider 11 and axis center. ... Length θA of the connecting rod 8 of the slider 12 ... Mounting angle RA of the crank pin 6 ... Radius A of the crank pin 6 ... Distance AST between the slider 12 and the axis center ... Distance θST of the slider 12 ... The rotation angle BST of the rotating disk 2 when the slider 12 moves by a distance AST is the moving distance of the slider 11 when the rotating disk 2 rotates by a rotation angle θST, then the following relational expression holds true. .

A=√ ² −(×) ² +cosθA (1) B=√ ² −(×) ² +cosθB (2) AST=A−√ ₂ −[×(+)]
² +cos(θA+θST) (3) BST=B−√ ² −[×(+)]
² +cos(θB+θST) (4) From the above relational expression, slider 12 can be set to distance AST
Distance that slider 11 moves when moved by
BST is LA, θST, θA, RA, LB, θB,
Determined using RB as a parameter.

Now, as an example, three different travel distances AST
desired travel distance required for each of
Assume BST as shown in the table below.

Combination 1 Combination 2 Combination 3 AST 37 70 84.5 BST 52.5 97 117.5 Then, θST = 90° θA = 45° RA = 59.75 θB = 45.6°, and various values were given to the crank pin mounting radius R. Enter the information into the computer while doing the above (1)~
When searching for values such that the BST values corresponding to each AST are as shown in the table above using equation (4), the results shown in the table above were obtained when RB = 82.9.
This shows that it is possible to obtain the desired set values of AST and BST by changing each of the seven parameters LA, θST, θA, RA, LB, θB, and RB and searching with a computer.

Therefore, if the length of the connecting rod, the mounting position of the crank pin, etc. are set based on the numerical values retrieved according to the conditions determined as in the above embodiment, it is easy to obtain the desired ratio in width direction and length. Since the moving distance of the centering arm in the transverse direction can be obtained by a single driving means, accurate centering can be performed on a plurality of articles having different dimensions in the width direction and length direction.

Moreover, by using a driving means capable of controlling a predetermined rotation angle of the rotating disk as described above, and by attaching a centering arm having a tip shape as shown in FIG. It is possible to perform accurate centering operations without causing deformation distortion.

For example, like a shadow mask, 20 inches,
When using a double-acting cylinder for centering during the painting process for multiple items whose dimensions are specified as 22 inches and 26 inches, a double-acting cylinder with a stroke for 26 inches and a stroke for 22 inches and a double-acting cylinder with a stroke for 26 inches and a stroke for 22 inches are By using a 20-inch stopper fixed to the machine frame, three types of shadow masks with different width and length dimensions can be centered by one centering device operated by a single drive means. By shortening the painting process and simplifying the centering operation by making the centering device more versatile, it has a significant effect on improving work efficiency, and it has become possible to By adding a dynamic angle control means, there are many excellent effects, such as eliminating the risk of deforming and straining even articles with ultra-thin frames due to centering operations without pressure.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a partly sectional plan view of the centering device, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a diagram illustrating a calculation formula. 1... Machine frame, 2... Rotating disc, 4, 6... Crank pin, 7, 8... Connecting rod, 9, 10... Guide rail, 11, 12... Slider, 15, 16...
...Center ring arm, 17...The only means of drive.

Claims (1)

[Scope of Claims] 1. A slider is pivotally connected to the other end of an extendable and retractable connecting rod whose one end is pivotally connected by a crank pin on each of the intersecting diameters of the rotating disk, and the guide rail of the slider is orthogonally connected. centering arms are attached to the respective sliders, and the widthwise movement amount and lengthwise movement amount of each centering arm to the rotating disk become desired set values. A centering device for items with different widths and lengths that has multiple crank pin insertion holes at different positions. 2. A slider is pivotally attached to the other end of an extendable and retractable connecting rod whose one end is pivoted by a crank pin on each of the intersecting diameters of the rotating disk, and the guide rail of the slider is attached to the machine frame on a line perpendicular to the rotating disk. A center ring arm is attached to each of the sliders, and a plurality of crank pins are attached to the rotating disc at positions where the width direction movement and length direction movement amount of each center ring arm become desired set values. A centering device for articles having different dimensions in width and length, which is provided with an insertion hole and is provided with only a driving means for controlling rotation of the rotating disk by a predetermined angle.