JPS6347031A - Automatic assembler - Google Patents

Abstract

PURPOSE:To aim at uniformization in assembling quality, by housing each part in a stocker in advance, and assembling these parts by automatic feeding, centering and thread fastening devices with an assembly jig, in case of an automatic assembler for an escalator step. CONSTITUTION:An assembly jig 1 is pushed by a riser centering device 2, and carried in an assembly first station 3 at which assembling and thread fastening for a riser 20, pre-reinforcement 8 and a bracket 13 take place. Next, at an assembly second station 29, assembling and thread fastening for a cleat and station at side end are carried out. And, at a check station 49, measurement of flatness of the cleat and the riser 20, wave crest centering and a side end position are carried out and, after acceptance or rejection is judged, a finished product is taken out at a delivery station 60. According to this device, assem bling and checking operations for an escalator step are fully automated, so that assembling quality is uniformized and reliability for inspection is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic assembly device for escalator steps, and more particularly to an assembly device that performs everything from assembly to inspection in a fully automatic manner.

[Conventional technology]

Conventionally, the riser, blanket, and front reinforcement are temporarily assembled in the temporary assembly layer, and then one part of the temporary assembly is put into the main assembly layer, cleats are supplied, and various screws are tightened. After that, attach the side end demarcation and tighten the screws to complete the assembly. Furthermore, the assembled finished product is put into the inspection layer and each part is inspected.

(Japanese Unexamined Patent Publication No. 59-152035) [Problems to be solved by the invention] The above-mentioned conventional technology does not take automation into consideration and is entirely manual work, so it is difficult to ensure uniform assembly quality and inspection. There were reliability issues.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device that stores parts in advance in a stocker and assembles and inspects them fully automatically.

[Means for solving problems]

For the above purpose, the assembly jig is circulated by a conveying device, and the first assembly station is equipped with a riser supply device, a riser center height device, a front reinforcement supply device, a bracket supply device, a bracket screw tightening device, and a riser screw tightening device. The second assembly station is equipped with a cleat supply device, a cleat center height device, a cleat screw tightening device, a demarcation line supply device, a demarcation center height device, and a demarcation screw tightening device. This is achieved by arranging a flatness measuring device, a wave crest center measuring device, a side edge position measuring device, and arranging an unloading device at the unloading station.

[Effect]

The assembly jig circulates, and at the first assembly station, the riser,
Reinforce the front, assemble the brackets, tighten the screws, and at the second assembly station install the cleats.

Assemble the side end demarcation and tighten the screws.

At the inspection station, the flatness of the cleat and riser, the center of the wave crest, and the position of the side edges are measured (1) and a pass/fail judgment is made. At the unloading station, finished products are unloaded. This eliminates the need for manual labor at all, and by using an assembly jig to automatically feed each part, center it, and assemble it with a screw tightening device, assembly quality becomes uniform and inspection reliability is improved.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 20.

The assembly jig 1 is pushed by the riser centering device 2 and carried into the first assembly station 3, and after positioning and clamping, the auto coupler 4 is connected and the clamp 5 is opened by hydraulic pressure.

Front reinforcements 8 are stocked on the belt conveyor 7 of the front reinforcement stocker 6. When it is transported to the take-out position, it is reversed 90 degrees by the reversing lever 9, and the magnet 11 of the front reinforcement supply device 10 is lowered.

After adsorbing the front reinforcement, the lift 1 is transported onto the assembly jig 1 and lowered to release the magnet 11, completing the supply of the front reinforcement 8.

Brackets 13 are stocked in the bracket stocker 12. When the bracket 13 is transported to the take-out position, the magnet 15 of the bracket supply device 14 descends, and the bracket 13
After adsorbing the bracket 2, the bracket 2 is transported onto the assembly jig 1 and lowered to release the magnet 15, completing the supply of the bracket 13.

The hydraulic pressure of the auto coupler 4 is released, the clamp 5 is closed by the spring force, and the auto coupler is released.

The bracket screw tightening head 16 is moved to the first screw tightening position by the first cylinder 17, and screw tightening is performed. Further, the second cylinder 18 moves to the second screw tightening position and tightens the screws.

The riser stocker 19 is stocked with risers 2o,
When conveyed to the take-out position by the rotation of the chain conveyor 21, the magnet 23 of the riser supply device 22 descends.
After the riser is adsorbed, the riser 2 is transported onto the standing jig 1 and lowered to release the magnet 23, completing the supply of the riser.

Pitch par 2 for riser centering installed on riser centering device 2
4 is advanced by the cylinder 25 to center the riser 20.

The riser upper screw tightening head 26 and the riser lower screw tightening head 27 are moved by cylinders, are positioned at the right screw tightening position, and tighten the screws in the order of the upper part and the lower part. Thereafter, the cylinder moves and positions the screws to the left-hand side, and the screws are tightened in the order of the upper and lower parts. Next, the assembly jig 1 is lifted by unclamping, and the lower screws at the bottom of the riser are tightened. Furthermore, the screw tightening head 27 is returned to the right side screw tightening position, and the lower screw on the right side is tightened. Thus, the work at the first assembly station 3 is completed, and the assembly jig 1 is transported to the next station by the transfer bar 28.

The assembly jig 1 transported to the second assembly station 29 is positioned and clamped, and the slide tables 30 move forward from both sides.

The magnet 32 of the cleat supply device 31 descends, picks up the topmost cleat from the stacked cleats 33, transports it onto the assembly jig 1 and descends, and releases the magnet 32.
Complete cleat supply.

The cleat is centered by a cleat centering device 34 and a cleat positioning button 35 on the slide table 30.

The feed screw 37 is rotated by the electric mode 36, and the screw tightening device 38 is moved to the first screw tightening position. The cleat screw tightening head 40 travels to the left side by the cylinder 39 and performs screw tightening. Next, the cleat screw tightening head 40 is moved to the right by the cylinder 39 to tighten the screws. Next, the electric moder 36 moves the screw tightening device 38 to the second screw tightening position to tighten the screws. Furthermore, the cleat screw tightening head 4 DEG is moved to the left by the cylinder 39 to perform screw tightening and complete the cleat screw tightening.

The side edge demarcations 42 lined up on the belt conveyor 41 on the slide table 30 are positioned at the take-out position by the conveyance of the belt conveyor 41, and the chuck 44 of the side edge demarcation supply device 43 is lowered to remove the side edge demarcations 42. After being chucked, it ascends, rotates, and descends, opens the chuck 44, and supplies the side end demarcation 42.

The side end demarcation 42 is positioned on the slide table 30 using a button 45 and a centering arm 46 to center the side end demarcation 42.

The screw tightening device 38 is moved to the third screw tightening position by the electric mode 36, and the demarcation screw tightening head 47 is moved.
Tighten the demarcation screw in the center. Next, the demarcation screw tightening head 47 is moved outward from the surface by the cylinder 48, and the side end demarcation 42 is screwed. Thereafter, the side end demarcation screw tightening head 47 is sequentially moved by the electric mode 36 and cylinder 48 to tighten the demarcation screw 42. The work at the second assembly station 29 is thus completed, and the assembly jig 1 is transported to the next station.

After positioning and clamping the assembly jig 1 transported to the inspection station 49, the auto coupler 50 is connected, the clamp 5 is released by hydraulic pressure, and the rear shaft 51 is supported from below by pneumatic pressure, thereby reducing distortion during assembly. Perform the inspection in the open state. First, the flatness measuring device 52 is moved to the right measuring position by the cylinder 53, the measuring head 54 is pressed against the object to be measured 55, and the position is measured by the digital linear gauge 56. Similarly, measurements are taken at the center and left side, the results are calculated by a microcomputer, the degree of flatness is determined, and pass/fail is determined. Next, the wave crest center measuring device 57 is lowered, and the measurement head 58 is pressed in one direction of the wave crest, and the position of the wave crest is measured with a digital linear gauge. Furthermore, from both ends, the end position measuring head 5
9 and measure the end position with a digital linear gauge. A microcomputer compares these measurement results with tolerance values to determine pass/fail. The inspection work is completed as described above, and the assembly jig 1 is transported to the next station.

After the assembly jig 1 transported to the unloading station 60 is positioned and clamped, the auto coupler 61 is connected and the clamp 5 is released by hydraulic pressure. Chuck 63 of unloading device 62
is lowered, the step assembly 64 is chucked, and then raised and carried out onto the carry-out conveyor. After that, the assembly jig 1 is attached to the lifter 6
6 to the basement, transported through the underground portion by a chino 67, pushed up above ground again by a lifter 68, and returned to the assembly station 3.

According to this embodiment, the method of clamping the workpiece of the assembly jig is to firmly restrain the parts at the assembly work station, and to release strain and support the parts in a posture suitable for the actual usage condition at the inspection work station. Accordingly, the accuracy of inspection can be improved.

〔Effect of the invention〕

According to the present invention, the assembly and inspection work of escalator steps can be fully automated, resulting in uniform assembly quality and improved inspection reliability.

[Brief explanation of the drawing]

Fig. 1 is an overall plan view of an embodiment of the present invention, Fig. 2 is a left side view of the first assembly station, Fig. 3 is a view from the ■ arrow in Fig. 2, and Fig. 4 is a Fig. 4 in Fig. 2. 5 is a view in the direction of the ■ arrow in FIG. 4, FIG. 6 is a 90 degree rotation of the sectional view in the direction of the The figure is a left side view of the first assembly station, Figure 9 is a view from the ■ arrow in Figure 8, and Figure 10 is a left side view of the first assembly station.
The figure shows the unclamped state in Fig. 9, Fig. 11 is a 90 degree rotation of the sectional view taken in the direction of the ■ arrow in Fig. 1, Fig. 12 is a sectional view taken in the 11 is a sectional view taken along the X■ arrow, FIG. 14 is a sectional view taken along the XIV arrow in FIG.
Figure 16 is a view from the back of Figure 15, Figure 17 is a left side view of the inspection station, Figure 18 is the ■View from the arrow, No. 19
The figure is a left side view of the inspection station, FIG. 20 is a cross-sectional view taken in the direction of the XX arrow in FIG. 1, rotated by 90 degrees, and FIG.

Claims (1)

[Claims] 1. An assembly jig, a jig conveyance/positioning device, a riser supply device, a riser centering device, a front reinforcement supply device, a bracket supply device, a bracket screw tightening device, and a riser screw tightening device. a first assembly station; a second assembly station including a cleat supply device, a cleat centering device, a cleat screw tightening device, a demarcation supply device, a demarcation centering device, and a demarcation screw tightening device;
An automatic assembly device comprising an unloading station including an unloading device, and a control device that controls the unloading station. 2.Furthermore, a flatness measuring device, a wave crest center measuring device,
2. The automatic assembly apparatus according to claim 1, further comprising an inspection station including a side edge position measuring device.