JPH0311687Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a height detection tool that has an operating rod that approaches a base rod by pushing up and can easily detect the height.

[Background technology]

For example, the single materials that form the pillars, beams, walls, etc. of buildings are stored by juxtaposing and stacking them, but in order to take out the single materials from the single material block, the height of the single material block must be It is preferable to keep it constant.

[Purpose of the invention] The present invention makes it possible to raise and lower a base rod equipped with a detector for detecting the approach of an operating rod by means of a cylinder, so that the height of the workpiece made of the single material block can be easily detected, for example. The purpose is to provide detection tools.

[Disclosure of invention]

Below, the height detection tool 3 of the present invention is used as an unloading device 1 for unloading a single material t from a single material block T as a workpiece.
Taking as an example the case where the workpiece is a single material block, one embodiment will be described based on the drawings.

In the figure, the unloading device 1 is a supply conveyor 11
, a lifting device 12, a transfer conveyor 13, and a transfer device 14 equipped with a suction device 15, which can unload the single material t from the single material block T in which the single material t has been stacked, and an unloading device. 1 is attached with a height detecting tool 3 and a spacer dispensing tool 5 according to the present invention.

The single material block T is a long body with a rectangular cross section,
In this example, six single materials t are arranged side by side in the horizontal direction, and spacers s perpendicular to the longitudinal axis of the single materials t are interposed every three stages to prevent the load from collapsing.

The supply conveyor 11 consists of two belt conveyors 11a, 11a arranged in parallel, and can supply the single material block T to the lifting tool 12 with its longitudinal axis orthogonal to each other and with its end protruding.

The lifting tool 12 has a slide frame 1 erected on the front surface of a base 17 provided in contact with the terminal end of the supply conveyor 11, sandwiching the belt conveyors 11a, 11a.
The arm 16 is attached to 9 and 19. The slide frame 19 is a frame member having a U-shaped cross section with an open front, and its upper end projects upwardly beyond the base 17, and therein is a screw shaft 21 extending vertically,
21 is rotatably supported. Note that the screw shaft 2
1 has a gear at its lower end and rotates synchronously via a transmission device (not shown) inside the base 17.

The arm 16 has horizontal arm portions 22, 2 whose rear ends are inserted into the slide frame 19 and which are screwed into the screw shaft 21.
A horizontal axis is bridged between the two, and an arm portion 23 is placed in the center of the horizontal axis.
By descending, the arm 16 can sink below the upper surface of the supply conveyor 11 and can rise to near the upper end.

The transfer conveyor 13 is composed of, for example, a roller conveyor, and the upper part of the base 17 is connected to the supply conveyor 11.
It is spanned perpendicularly to.

The transfer tool 14 includes suction devices 15 that move above the transfer conveyor 13 and along a rail 25 that straddles the tip of the arm 16 of the lifting tool 12. A rail 25 projects horizontally from the base 17 from the front surface of a column 24 that stands up at the back of the transfer conveyor 13, and the rail 25 holds the channel members with their grooves facing each other and with a gap between them. It is formed by separating and fixing.

The adsorber 15 is equipped with a trolley 2 running on the rails 25.
The cylinder 27 is placed upside down on the upper surface of the cylinder 6, and is attached to an elevating plate 28 at the lower end of the cylinder 27. Further, in this embodiment, the suction device 15 is arranged at a distance of the width of the single material t so that it can simultaneously adsorb the two single materials t, t arranged side by side. The trolley 26 is connected to a chain C1 that revolves around a chain wheel S1 provided at the tip of the rail 25 and a chain wheel S2 provided on a deceleration motor M1 on the upper surface of the support column 24, so that the trolley 26 can be rotated by forward and reverse rotation of the deceleration motor M1. It can move back and forth, and is raised and lowered by the expansion and contraction of the cylinder 27.

As described above, the unloading device 1 is provided with the height detecting tool 3 and the spacer dispensing tool 5 according to the present invention.

In the detection tool 3 according to the present invention, an operating rod 33 that constitutes a parallel crank mechanism together with the base rod 31 is attached to a base rod 31 that is raised and lowered by a cylinder 30. A detector 34 is installed to detect the

In this embodiment, the height detector 3 is connected to the rail 2.
It is arranged on the side of 5. As shown in FIG. 2, the base rod 31 has branch pieces 35, 35 raised upward, and the upper end of the branch piece 35 has levers 36a, 36b of the same length, one end of which is pivoted by the rail 25. The other end of the cylinder 30 is pivotally connected, and the rod of the cylinder 30 is swingably supported on the extended end of the lever 36a. Further, the operating rod 33 has a straight shaft shape, and the base rod 3
1, an arm 32 pivotably supported at the same height as the arm 32, which can be bent freely;
The operating rod 33 is supported by the lower end of the rod 32, and the lower surface of the operating rod 33 is held horizontally. As shown in FIG. 4, the arm 32 has an oblique cutout on its upper surface, and
By contacting the upper piece, the arm 32 is tilted at the same angle in the free state in which the operating rod 33 is lowered, and the base rod 31, arms 32, 32, and operating rod 33 are combined to form a parallel crank mechanism. The operating rod 33 can approach the base rod 31 while tilting the arm 32.

The detector 34 is, for example, a microswitch, and is attached with its operating end 37 facing the operating rod 33, so that it comes into contact with the approaching operating rod 33 and can detect its approach.

The spacer dispensing tool 5 includes a support rod 52 extending above the single material block T on a traveling platform 51 that moves along the longitudinal axis of the single material block T, and a supporting rod 52 extending above the single material block T.
Sweepers 53 and 54 are attached to 2.

The traveling platform 51 includes, for example, rails 56 extending over the upper ends of columns 55, 55, which are erected on both sides of the supply conveyor 11 with a passage gap for the single block T.
run. Note that the rail 56 is similar to the rail 2
The leading edge of the rail 56 is supported at its center, and the front edge of the rail 56 is provided with guide pieces 57, 5 that protrude vertically.
7 is formed, and an upper guide piece 5 is formed on the traveling base 51.
7 and upper and lower guide pieces 57, 57
The support rod 52 extending above the single material block T is provided on the running table 51 to hold the single material block T horizontally and the transfer conveyor 1
Protrude towards 3. The sweepers 53 and 54 are
It has support shafts 59 and 60 that are pivotally supported by bearing pieces protruding from both sides of the support rod 52, and a rod-shaped abutment 62 that extends horizontally by arm pieces 61 that are fixed to the support shafts 59 and 60. 63 is fixed. Also, support shaft 5
9 and 60 have a lever 6 at the end on the traveling platform 51 side.
4 and 65, and the other ends of the levers 64 and 65 are installed on the side of the traveling base 51.
of the cylinders 66, 67.
With the expansion and contraction of the sweepers 53 and 54, the sweepers 53 and 54 can be tilted, and the corresponding parts 62 and 63 can be lowered downward from the lower surface of the support rod 52 to a predetermined height. Note that a guide roller 69 is pivotally supported on the arm piece 61. A chain C2 is connected to the running platform 51, and is wound around a chain wheel S3 attached to one end of the rail 56 and a chain wheel S4 of a deceleration motor M2 provided at the other end.
The traveling platform 51 can reciprocate on the rail 56 by forward and reverse rotation of the deceleration motor M2.

Also, spacer receiving boxes 71, 71 that can run horizontally on the rails 70 are arranged near the pillars 55.

Therefore, the unloading device 1, on the supply conveyor 11,
Single material blocks T are made by aligning and stacking single materials with the longitudinal axes orthogonal to each other with spacers s interposed as described above.
is transferred, and the arm 16 rises from its lowered state, whereby the single material block T is lifted by the arm 16. Further, the transfer tool 14 is moved by the lifting tool 12,
By being able to reciprocate across the transfer conveyor 13 and moving up and down by the expansion and contraction of the cylinder 27, the upper single materials t can be transferred to the transfer conveyor 13 two by two.

Further, the height detecting tool 3 according to the present invention extends the cylinder 30 of the lifting tool 12 prior to raising the operating rod 3 as shown in FIG.
3, the base rod 31 is lowered. Therefore, the rising upper surface of the single block T pushes up the operating rod 33 until the detector 34 is activated. Note that the detector 34,
With the operation of 34, the raising of the lifting tool 12 is stopped, so that the height detecting tool 3 detects the proximity of the operating rod 33, and keeps the height constant as measured by the detector 34. The cylinder 30 is reduced after the measurement, and the operating rod 33 is expanded as shown by the dashed line in FIG.
By lifting the spacer dispensing tool 5, interference with the support rod 52 and the sweepers 53 and 54 is prevented. It should be noted that the cylinder 30 is extended every time the transfer of the single material t in each stage is completed, and its raised position is kept constant.

When the spacer dispensing tool 5 completes the transfer of the single material t placed on the spacer s and the spacer s is exposed on the upper surface of the single material t, the spacer dispensing tool 5 extends the cylinder 66 to tilt the spacer s to a height where it comes into contact with the spacer s. After that, the deceleration motor M
2 and move the part 62 along the longitudinal axis of the single material t together with the carriage 51.
The spacer s can be dropped into one receiving box 71. Also, after passing, it stops at the position and when the next spacer s is exposed, the other cylinder 67 is extended and the tool 6
By lowering and returning the spacer 3, the spacer s can be thrown into another receiving box 71.

[Effect of idea]

In this way, the height detecting device of the present invention has an operating rod that can be pushed up freely forming a parallel crank mechanism on the base rod that is raised and lowered by a cylinder, and a detector that detects the proximity of the base rod. Because of this, the operating rod can be lowered by expanding and contracting the cylinder, and by raising it when not in use, it is possible to efficiently measure the height of a block of single material while preventing interference with other parts, making it possible to take out a single material. It can have many effects, such as streamlining the work.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the device of the present invention when used as an unloading device, Fig. 2 is a line diagram showing its operation, and Fig. 3 is a spacer payout used in the unloading device. FIG. 4 is a diagram showing the function of the tool. FIG. 4 is a perspective view showing the height detecting tool according to the present invention in detail. 31...base rod, 32...arm, 33...operating rod, 34...detector.

Claims (1)

[Scope of utility model registration request] The height detection device is located above a lifting tool that lifts a workpiece and detects the upper surface of the workpiece lifted by the lifting tool, and includes a horizontal base rod that is raised and lowered by a cylinder, and a height detector located below this base rod. The base rod is horizontally attached to the base rod via a plurality of arms of the same length, thereby forming a parallel crank mechanism together with the base rod and the arm. A height detecting tool comprising: an operating rod that approaches the base rod by further lowering the base rod upon stopping, and a detector provided on the base rod to detect the approach of the operating rod.