JPH085965Y2 - Multiple sheet picking detection device - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention is one in which a plate material is sucked and floated from the upper stage of the accumulated plate material to a processing machine such as a press and taken out in the lateral direction. The present invention relates to a device for measuring the thickness and detecting a plurality of sheets in order to confirm that one sheet is taken out when the sheet is moved and supplied.

(Prior Art) Conventionally, as an apparatus for detecting multiple plate materials, the upper contact is a spherical body having a relatively large diameter, and the height of the lower surface is the same as the upper surface height of the upper floating height of the plate material. In general, it was a fixed contact provided at the fixed height, and for thickness measurement, the lower contact rotated around a horizontal shaft pin It was a method of holding the plate material and measuring the thickness.

(Problems to be Solved by the Invention) In the above-mentioned prior art device, the edge of the suction floated plate material is thick and rigid, and the floating upper limit height defined by a plurality of suction cups (hereinafter referred to as pass line It was prepared based on the assumption that it is either horizontal as it is) or the plate thickness is thin and it hangs down by its own weight.

However, in reality, the accumulated sheet materials have shear burrs due to pre-processing shearing or burr, and the edge portions may be located higher than the pass line.

In this case, in addition to the inconvenience that the upper fixed contact pushes down the edge of the plate material to bend it and scratches the upper surface, the surface of the fixed contact may be damaged. As a result, there is an inconvenience that it is not possible to reliably detect the multiple plate cutting.

[Means for Solving the Problem] (Means for Solving the Problem) In the present invention, the plate material is attracted and floated from the upper stage of the accumulated plate material in a horizontal posture, and the plate material is floated to the upper limit position and stopped against the edge of the plate material. , An upper arm and a lower contact which are guided by a base bracket supported on a fixed portion outside the ascending region and are advanced and retracted by a drive device, and the upper arm and the lower arm having the upper and lower contacts facing each other at their tips. The upper arm is urged downward and the lower arm is urged upward with respect to the double-sided cam provided on the base bracket near the rear center of gravity, and the upper contact and the lower contact are provided on both sides in relation to forward and backward movement. It is configured to be driven by a cam to change the height position separately.

(Operation) Since the device of the present invention is configured as described above, even if the floated plate material has sufficient rigidity and the shear burr in the pre-processing projects higher than the pass line, the plate material will not Even if the edge is thin and has little rigidity, the upper and lower contacts can accurately detect whether a single plate or a complicated plate is taken out by the linear sensor without damaging the plate. .

(Embodiment) Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. The front, rear, left, right, top and bottom shown in the text are all front, rear, left, right, top and bottom in FIG.

The plate material multiple-pickup detection device 1 is composed of a base group 3, a horizontal slider group 5, an upper arm group 7, and a lower arm group 9.

The base group 3 is mainly composed of the base bracket 11,
The rear side is a vertical bracket 11a and the lower end is a horizontal bracket 11b bent at a right angle.

Also, above the vertical bracket 11a, the mounting bracket 1
3 is provided via a connecting plate 13a, and the base group 3 is provided in the left-right direction from a fixed portion of the plate material outside the elevating area.

A double-sided cam 15 is fixed to the upper front end of the horizontal bracket 11b, and its upper cam surface is 15a and its lower cam surface is 15b.

Further, a shaft is fixed to the vertical bracket 11a slightly to the right of the center of the vertical bracket 11a, and four rollers 17 having V-grooves on the outer circumference are provided at horizontally elongated rectangular positions, and a connecting angle 23 described later penetrates through the rollers. A rectangular hole 19 is provided so that it can move forward and backward in the left-right direction.

The horizontal slider 21, which is the main body of the horizontal slider group 5, has a flat plate shape having a cross-sectional shape that engages with the V groove of the roller 17, and is guided by the four rollers 17,
A piston rod 29 of, for example, an air cylinder 27 provided horizontally at the rear end of the apparatus is driven via a connecting angle 23 shown in the drawing to move forward and backward in the left-right direction.

Further, a support fitting 31 is fixed to the front end on the right end of the horizontal slider 21, and a guide plate 33 is fixed to the vertical position on the front end thereof.

Further, a shaft is fixed to the guide plate 33, and four rollers 35 having V-grooves on the outer periphery are provided in a substantially square shape.
An angled lower spring seat 37 having a supporting surface facing upward is attached to the center front side of 33.

The vertical slider 39, which supports the upper arm group 7 via the attachment plate 38, has a cross section in which the left and right sides engage with the V groove of the roller 35, and is guided by the roller 35 to be vertically movable. On the front side of the vertical slider 39, the attachment plate 38, which is longer than the vertical slider 39, is provided so as to project downward, and on the inner side of the lower end thereof is fixed to the front end of the horizontal bracket 11b, as is apparent from FIG. Upper cam surface 15a of double-sided cam 15
An upper cam follower 41 which is in contact with the upper arm group 7 and which mainly supports the upper arm group 7 and controls the vertical movement.

Further, an upper spring seat 43 facing the lower spring seat 37 is provided with the spring receiving surface facing downward on the inner side of the center of the vertical slider 39 at the middle height position. The functions of the upper spring seat 43 and the lower spring seat 37 will be described later.

An upper arm 45 is attached in the horizontal direction to the front of the vertical slider 39 and slightly below it via the attachment plate 38 described above.

At the right end of the upper arm 45, a roller-shaped upper contactor 47 with which the plate material W which is the object to be detected comes into contact is attached, and at the left end, a linear sensor 49 such as a radial gauge is attached via an angle bracket. The actuator 51 is provided so as to face downward.

Further, in the middle of the center of gravity of the upper arm 45, a vertical bush 53 having a vertical hole is fitted, and the upper and lower sides are appropriately fixed with a snap ring or the like.

Upper and lower arm group 7 and the horizontal slider group 5
In addition to the engagement relationship between the vertical slider 39 and the roller 35 described above, between the lower spring seat 37 and the upper spring seat 43 as shown in the detailed view of FIG. A compression spring 57 guided by a center bolt 55 is mounted.

However, the compression spring 57 includes the weight of the upper arm group 7, the weight of the lower arm group 9 described later, and the linear sensor.
It does not completely support the weight of 49, but is used for the purpose of so-called counter balance to reduce the contact pressure between the cam follower 41 and the upper cam surface 15a, maintain the lightness of operation and maintain accuracy against wear. It is something.

The lower arm group 9 is mainly composed of a lower arm 59 which is parallel to and above the upper arm 45. A roller-shaped lower contactor 61 that comes into contact with the plate W that is the object to be detected is held at the right end thereof, and an angle member 63 that comes into contact with the actuator 51 of the linear sensor 49 is attached to the front end near the center of gravity. .

Further, the lower end of the lower arm 59 is attached to the lower end of the upper and lower arm linking plate 65, and the vertical long hole 65a provided above the upper and lower arm linking plate 65 is provided with the hexagon socket bolt 67 attached to the left end of the upper arm 45. The neck column is slidable in the vertical direction, and maintains the parallelism of the upper arm 45 and the front-back direction.

The horizontal bracket is located on the rear side of the center of the lower arm 59.
A roller-like lower cam follower 69 is provided which contacts the lower cam surface 15b of the double-sided cam 15 provided on the front end of 11b from below and controls the vertical movement of the lower arm 59.

Further, the lower arm 59 has a guide bar at the center of its length.
A vertical hole into which 71 is fitted is formed, and a lower portion of the guide rod 71, which is a lower portion of the guide rod 71a, is formed with a key groove 71b. Attached to arm 59.

On the other hand, the upper part of the guide rod 71 is fitted in the vertical hole of the vertical bush 53 so as to be slidable in the vertical direction.
75 is set. An upper spring seat 77 is tightened and fixed to the upper end of the guide rod 71 from above by a bolt.

The compression spring 75 not only supports the weight of the lower arm group 9, but also maintains sufficient urging force to keep the lower cam follower 69 constantly pressed against the lower cam surface 15b of the base group 3 from below. ing.

Next, regarding the operation of the embodiment of the present invention described above,
7 will be described.

First, in the position A where the piston rod 29 of the air cylinder 27 is most retracted, the upper cam follower 41 provided on the rear side of the attachment plate 38 is located in the horizontal portion of the upper cam surface 15a of the double-sided cam 15 and the upper arm group 7 and its accessories. It is crimped by downward urging force such as the total weight of the members.

The lower cam follower 69 is pressed against the horizontal portion of the lower cam surface 15b by the upward biasing force of the compression spring 77.

In this case, both the upper contact 47 and the lower contact 61 are adjusted so as to be in close contact with each other while maintaining a pressure contact force with each other, and the height of the lower surface of the upper contact 47 is the same as that of the plate W to be detected. The shear burr or blistering height expected from the pass line is set high enough to clear the height. (Figs. 1 and 7
47-A, 61-A in the figure) In this state, the plate material W is moved toward the edge of the plate W to be detected.

When the upper cam follower 41 and the lower cam follower 69 respectively reach the position B, the upper contact 47 and the lower contact 61 are located at 47-B and 61-B. That is, the upper contact 47 sufficiently clears burrs or burr protruding above the upper surface of the plate material when it crosses the edge of the plate material W to be detected, and also sufficiently clears the lower surfaces of the plurality of sheets hanging downward. Is. (Figs. 47-B and 61-B in Fig. 7) Next, when the upper cam follower 41 and the lower cam follower 69 move forward to their respective C positions, the upper contact 47 and the lower contact 61 are covered as shown in Fig. 7. Since the upper and lower surfaces of the detection plate W are sandwiched, the lower cam follower as shown in FIG.
Even if 69 is removed from the bottom surface of W, it floats in the air and lower contactor 61
Keeps holding upward bias. It will be easily understood that the upper cam follower 41 also continues to hold the downward biasing force after the point C.

Thus, the forward movement is stopped at the stroke end of the piston rod 29, and the thickness of the plate material is detected by the linear sensor 59.

It is needless to say that after the detection is completed, the horizontal slider 21 retreats like C, B, and A and returns without touching the upward protrusion or the downward hanging portion of the edge of the plate material as in the case of forward movement.

[Effects of the Invention] As can be understood from the above description of the embodiments, the gist of the present invention is as described in the scope of claims for utility model registration. Therefore, before and after the upper and lower contacts cross the edge of the plate material. Then, the upper contact moves while clearing the upward projecting part of the plate material, and the lower contact moves the downward hanging part, and detects the thickness of the horizontal floating plate material a certain distance forward of the above edge. Accurate detection is easy without touching the displacement above and below the edge and without damaging the plate material.
The entire device has the effect of being relatively compact and affordable.

Also, it is apparent that appropriate design changes can be made without departing from the scope of the claims of the present application and can be implemented in other modes.

[Brief description of drawings]

FIG. 1 is a front view of a device for detecting a plurality of plate materials, FIG. 2 is a plan view of the same, FIG. 3 is a right side view, and FIG. 4 is a front end portion of a horizontal bracket, a double-sided cam, an attachment plate and an upper cam follower. FIG. 5 is a partial plan view showing the related positions, and FIG. 5 is a plan view of FIG. 4 showing the moving positions of the upper and lower cam followers and the shape of the double-sided cam. FIG. 6 is a partial elevational view for explaining the structure of the counter spring for reducing the weight of the upper arm group and the devices associated therewith, and FIG. 7 is the vertical contact in the A, B, C positions related to FIG. It is an operation explanatory view showing the relation with the edge part of the board material of the child. (Explanation of main symbols shown in the figure) 11 …… Base bracket 15 …… Double-sided cam 21 …… Horizontal slider, 39 …… Vertical slider 41 …… Upper cam follower 45 …… Upper arm, 47 …… Upper contactor 59 …… Lower arm, 61 …… Lower contact 69 …… Lower cam follower

Claims (1)

[Scope of utility model registration request] 1. A base supported by a fixed portion outside the ascending region with respect to an edge of the plate material which is attracted and floated from the upper stage of the accumulated plate material in a horizontal posture and floated to an upper limit position and stopped. An upper arm and a lower contact, which are guided by the bracket and are moved forward and backward by a drive device, are provided, and upper and lower arms having the upper and lower contacts facing each other at their tips are provided on the base bracket near the rear center of gravity of the lower arm. The upper arm is urged downward with respect to the cam and the lower arm is urged upward, and the upper contact and the lower contact are driven by the double-sided cam in association with the forward / backward movement to change the height position separately. An apparatus for detecting a plurality of plate materials, which is characterized in that