JPH06185930A - Automatic measuring equipment of plane width and thickness of work - Google Patents

Abstract

PURPOSE:To provide an automatic measuring equipment of plane width and thickness of a work in which the width and the thickness of a moving work are measured and the measurements are rendered to correspond with the work ing conditions of following process. CONSTITUTION:A measuring board 20 having a rear guide face is disposed, movably up and down from above a supporting frame 10 by means of the supporting frame 35 of a parallel link mechanism 30, above a conveyor 2 for moving a work in a predetermined direction while arranging the lower guide face in parallel with the conveyor 2. At least a row of proximity switches 25 are arranged at a predetermined constant interval on the measuring board 20 while opposing the detecting part thereof to the work and a rotary encoder 38 is coupled with the main supporting shaft 36 of the supporting arm 35 of the parallel link mechanism 30. The rotary encoder 38 measures the thickness of the work based on the variation of rotational angle of the supporting arm 35 and the width of the work based on the sum of load resistance during detecting operation of the proximity switch 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention reads a plane width according to the shape of a workpiece moving at a measuring position and automatically measures the thickness of a workpiece. The present invention relates to an automatic thickness measuring device.

[0002]

2. Description of the Related Art For example, a polishing device or a polishing machine that processes an article (hereinafter referred to as a work) when polishing or polishing the upper surface of a flat article usually has a working width. (Effective machining maximum width) The whole is operated under constant conditions for machining. In addition, when trying to effectively apply the processing tool only to the surface to be processed such as the width of the work, the size of the work is measured manually in advance, and the processing machine is based on the measured value. After the operator sets the tool operating part of the tool so that it can handle the work, the machining operation is performed.

[0003]

As described above, the correspondence of the work machine side to the work in the conventional blasting and cleaning device and the polishing machine is in a rough state. Therefore, for example, in a polishing and cleaning device, the polishing and cleaning tool may be operated on a workpiece under the same conditions for a workpiece having a width whose working width can be used as a whole and for a workpiece having a narrow width. It is clear that there is a difference in the degree of blasting.

In an apparatus for spraying fine particles onto a work, such as an automatic coating machine, the sprayed fine particles,
For example, the spray range of paint or the like is roughly set for the work. Therefore, when the width of the work is constant, the width dimension of the work is manually measured in advance, and the spray range of the spray material such as paint is selected according to the measured value. However, if there are workpieces with different widths during continuous coating work with the paint spraying range set to a predetermined width, the spraying of paint is wasted,
On the contrary, problems such as shortage may occur. In particular, when the work is not a constant width, there is a problem because the spraying range of the paint must be set so as to correspond to the maximum width of the work.

In the present invention, in view of the above situation,
An object of the present invention is to provide an automatic measuring device for measuring the planar width and thickness of a work, which is capable of measuring the shape and size of a moving work and making the measured value correspond to the working condition of the next process.

[0006]

In order to achieve the above object, according to the present invention, a measuring board having a lower surface as a guide surface is provided on the upper side of a transfer path for moving a workpiece in a certain direction, and the lower surface is provided on the transfer path. It is arranged in parallel so as to be movable up and down from a support base by a support arm of a parallel link mechanism, and a plurality of proximity switches are provided on the measuring board at a predetermined equal interval so that their detection units face the work piece and at least one. A rotary encoder is arranged in a row, and a rotary encoder is connected to a core support shaft of a support arm of the parallel link mechanism, and the thickness of the work is determined by the rotational angle displacement of the support arm by the rotary encoder.
Further, it is characterized in that the width of the work can be measured by the sum of the load resistances when the proximity switch is detected.

The automatic plane width and thickness measuring device for a work according to the present invention is disposed on the work supply side of the work processing device, and measures the work width and the work thickness by the plurality of proximity switches. Can be sent to the processing apparatus for the work, and can be associated so that the operating range of the processing means or the like for the work in the processing apparatus, the additional force required for processing, the supply of material, etc. can be controlled.

[0008]

The automatic work width and thickness measuring device of the present invention thus constructed is used by being installed in a work transfer line, and the lower surface of the measuring plate disposed above the transfer path is transferred. When coming into contact with a work moving on the road, the measuring board is first lifted by the work. By this lifting, the thickness of the work is measured according to the rotational displacement angle of the rotary encoder that is connected to the support arm backbone of the parallel link mechanism that supports the measurement board. In addition, when a workpiece is detected by the proximity switch row arranged on this measuring panel for a workpiece that moves while the measuring panel is being lifted, the sum of the load resistances of the proximity switches that detected the workpiece Since the load resistance value for each proximity switch during operation is set in advance as a unit of length, the work width can be quickly measured as the total value.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of an automatic measuring device for the plane width and thickness of a work of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of an automatic measuring device for a plane width and thickness of a work according to the present invention, and FIG. 2 is a central longitudinal side view of the automatic measuring device for a plane width and thickness of a work according to the present invention, FIG. 3 is a view taken along the line III-III in FIG.

In these drawings, an automatic measuring device 1 for measuring the plane width and thickness of a work according to the present invention is a conveyor 2 as a transfer path through which a work is fed to a processing machine (not shown).
(It is desirable to have a structure in which the transport surface is kept horizontal at the measurement position, and roller conveyors, flat chain conveyors, etc. can be used.) Gate-shaped support frame 10 installed so as to straddle the above, and this support frame A pair of parallel link mechanisms 30 supported on the top of the conveyor 10 and a measuring board 20 supported so as to be movable up and down in parallel with the upper surface of the conveyor 2.

The measuring board 20 is a flat rectangular shape having the required dimensions and a lower surface.
A plurality of proximity switches 25 are arranged in a plurality of rows in the width direction of the board body 21 at predetermined intervals in the board body 21 having a flat rigidity, with their detection parts facing downward. The proximity switches 25 are arranged so that the arrangement intervals are as short as possible. However, since the outer diameter is large when setting the intervals, the proximity switches 25 are arranged in a zigzag pattern in a plurality of rows as illustrated in FIG. 1 pitch P is set to 1 unit length, for example, 1 pitch = 1 cm. Further, a work introduction guide plate 23 is provided on the front side of the board main body 21 with respect to the traveling direction of the work (arrow a). further,
On the lower surface 22 of the board body 21, for example, a large number of rollers 24 are arranged at required intervals so that the contact resistance with the work is reduced. Instead of the roller 24, a large number of rotatable balls (for example, free ball bearings) can be arranged.

The parallel link mechanisms 30 and 30 for supporting the measuring board 20 are rotatably connected to the upper end of a stand 31 standing on the support frame 10 by a shaft pin 33. The link 34 and the support arm 35 whose main portion is supported by the shaft 36 at the lower part of the stand 31 are arranged in parallel in two steps at a required interval. Also these links
The tip ends of the support arm 35 and the support arm 35 can be freely rotated by pins 37 and 37 'to the upper end and the middle part of the column 32 that is erected at both ends of the upper surface of the rear end of the measurement board 20. Are linked to. In this way, the measurement panel 20 is configured to be vertically movable and always kept horizontal. The main portion of the support arm 35 and the shaft 36 are fixed to each other, and a rotary encoder 38 is connected to one end of the shaft 36 so that the rotational displacement amount of the support arm 35 can be detected. A balance weight 39 that opposes the load on the measuring board 20 side is adjustably attached to the rear end of the support arm 35.

The plurality of proximity switches 25 are connected to a measuring unit 40 provided side by side, and in this measuring unit 40, the detection operating position and the sum of the load resistances when the proximity switch 25 detects the detection are detected by known means. Can be calculated, and at the same time these measured values are recorded, they are transmitted to the next step as data signals of the width dimension of the work and the positional relationship in the width direction. Further, the rotary encoder 38 is connected to the measuring unit 40, and in the measuring unit 40, the rotational displacement amount of the support arm 35 is set to a reference position of the measuring board 20 (for example, the upper surface of the transfer path and the lower surface of the measuring board). Is converted to the thickness of the workpiece, in other words, the thickness of the workpiece is converted into 0, and is recorded as a data signal of the thickness dimension of the workpiece and transmitted to the next step at the same time. .

The apparatus for automatically measuring the plane width and thickness of a work according to the present invention having such a configuration is used by being installed above the conveyor 2 into which a work is fed to a processing machine (not shown). As shown in FIGS. 4 and 5, when the work W is advanced by the conveyor 2 and comes into contact with the work introduction guide plate 23 of the measuring board 20, the measuring board 20 has the link 34 of the parallel link mechanism 30 and the support arm 35. Supported by the unloaded condition. Therefore, the work W is on the conveyor 2
The lower surface 22 of the board main body 21 is lifted up by being guided by the inclined surface of the work introduction guide plate 23 by the propulsive force moved by the work introduction guide plate 23 and moved to the lower side of the board main body 21.

Then, as the work W progresses, the measuring board
When 20 is lifted, the pivotal displacement of the support arm 35 of the parallel link mechanism 30, which is connected and supported as described above, connects the pivotal movement of the shaft 36 fixed to the main portion of the support arm 35. The rotary encoder 38 detects the rotational displacement amount, and the detection signal is transmitted to the measuring unit 40. At the same time, the plurality of proximity switches 25 provided on the measuring board 20 detect the work W moved along the lower surface 22 of the measuring board 20, and the detection signal is transmitted to the measuring section 40. As a result, in the measuring unit 40, the detection signal from the rotary encoder 38 is calculated in the calculation unit to record the thickness of the work W, and at the same time, the detection signal from the proximity switch 25 is calculated in the calculation unit to calculate the work W. Is recorded, and the width position of the work W is also recorded. If these data are sent to the control unit of the processing machine in the next process in advance, the processing machine organically operates based on this data, and the processing can be performed without waste.

When the work W is mounted on the conveyor 2 and moves under the measuring board 20, the work W rubs the lower surface 22 of the measuring board 20. By attaching an abrasion resistant material, it can slide smoothly and there is no problem. Of course, it is more effective to incorporate the roller 24 so that the roller 24 and the work W are in contact with each other.

[0017]

As described above, according to the apparatus for automatically measuring the plane width and thickness of a work of the present invention, the measurement board is brought into contact with the work moved on the conveyor with a simple structure from above. , The thickness and width of the work can be measured continuously and automatically at the same time. Therefore, by providing it before the processing step, the processing in the processing step becomes effective, and it is extremely effective in rationalizing the processing.

[Brief description of drawings]

FIG. 1 is a plan view of an automatic measuring device for a plane width and a thickness of a work according to the present invention.

FIG. 2 is a central longitudinal side view of an automatic measuring device for a plane width and a thickness of a work according to the present invention.

FIG. 3 is a view taken along the line III-III in FIG.

FIG. 4 is a plan view showing an operating mode of an automatic measuring device for a plane width and a thickness of a work according to the present invention.

FIG. 5 is a vertical cross-sectional view showing an operation mode of an automatic measuring device for a plane width and a thickness of a work according to the present invention.

[Explanation of symbols]

 1 Automatic measurement device for plane width and thickness of work 2 Conveyor 10 Support frame 20 Measuring board 21 Body 22 Lower surface of body 23 Work introduction guide plate 24 Roller provided on lower surface of body 25 Proximity switch 30 Parallel link mechanism 31 Stand 32 Stand upright on measuring board 33 Axis pin 34 Link 35 Support arm 36 Axis 38 Rotary encoder 39 Balance weight 40 Measuring section W work

Claims (2)

[Claims] 1. A measuring board, whose lower surface is a guide surface, is arranged above a transfer path for moving a work in a certain direction, and the lower surface of the measuring board is parallel to the transfer path and is moved up and down from a support base by a support arm of a parallel link mechanism. The measuring board is movably supported, and a plurality of proximity switches are arranged in at least one row at predetermined equal intervals so that the detection units face the work.
A rotary encoder is connected to the main support shaft of the support arm of the parallel link mechanism, and the rotary encoder determines the thickness of the work by the rotational angular displacement of the support arm, and the sum of the load resistances when the proximity switch detects the operation. An automatic measuring device for a plane width and a thickness of a work, characterized in that the width of each work can be measured. 2. An automatic measuring device for a plane width and a thickness of a work according to claim 1, wherein a plurality of guide rollers that come into contact with the work are provided on a lower surface of the measuring board.