JPS6195848A - Work table - Google Patents

Abstract

PURPOSE:To enable accommodation of a work table for heavy and large size works in a small space and to realize small installation area by providing two upper and lower stage lines and two lifts connecting the two upper and lower stage lines. CONSTITUTION:An upper stage line in which plural rows of roller conveyors 3 are disposed and a lower stage line are placed in parallel in upper and lower stages. And two pantograph type lifts 4a, 4b are provided to connect the upper and lower stage lines. And n number of pallets 11 whose respective width is 1/n of the line length are arranged on each of the upper and lower stage lines, and one pallet is placed on one of the two lists 4a, 4b. A feeding unit 12 is provided so as to stop on a side edge of the pallet 11 on the lift 4a rising to the feeding out side of the upper stage line and to feed one pallet, and a feeding unit 12 is also provided so as to stop on a side edge of the pallet 11 on the lift 4b falling to the feeding out side of the lower stage line.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a work table suitable for those using robots for transporting workpieces to machine tools.

BACKGROUND OF THE INVENTION In recent years, robots have been used to transport workpieces into and out of machine tools such as lathes and machining centers. A horizontally rotating work table is generally used to stock materials in order to continuously supply materials to the workpiece delivery position with the robot, and to receive processed products from the robot and send them to the next process.

Problems to be Solved by the Invention When the workpiece becomes large and heavy, this horizontally rotating table requires a large space and has a limited loading and conveying capacity, which poses a problem for large workpieces. Ta.

Means to Solve the Problem ``The upper line and the lower slope line, which are equipped with double rows of roller conveyors 6, are arranged in parallel in two stages, upper and lower, and the upper line and the lower slope line are connected in series with the roller conveyor 3 on the upper surface. Two pan tag foot type lifts 4 equipped with 10 groups of rollers
A and 4b are respectively installed at the end of the lift, and lift lifting devices 8 and 9 are installed respectively at the ends of the lift, and the line lengths are set at the upper and lower lines respectively. 1 equally divided 1 +i pallet 11 and n pieces Qt ”J and rjil to 1 in 2 lifts
A palette 111i1 that has the same shape as the mentioned palette 11! Includes τM
L, the side of the pallet 11 on the lift that has risen to the delivery side of the upper line, the feeding device 12 that stops at the edge and feeds one pallet, and the side of the pallet 11 on the lift that has descended to the delivery side of the lower line. Stop at the side edge and pallet 1
A feeding device 12 is provided for feeding the individual pieces in the opposite direction to the feeding direction of the upper stage.

Example Embodiments of the present invention will be explained below based on the figures.

The frame 1 has two stages, an upper stage and a lower stage, so that the workpiece can be moved in the longitudinal direction, and several rollers 2 are rotatably arranged in parallel at regular intervals on both sides of the upper and lower stages in the longitudinal direction. Two rows of roller conveyors 6 are provided. And the upper row.

Side plates 13 are installed on both sides of the lower line to guide pallets to be described later so that they move in parallel. Rifts 4' t 4b connecting the upper line and the lower line formed by the roller conveyor 6 are provided at both ends of the frame 1 on the workpiece storage side and on the robot delivery side, respectively.

Lift) 4a v 4b have the same structure and are housed in a lift frame 5 placed side by side with the frame 1, and adopt a pantograph system. The pantograph is 1 character 6a, (5
b are arranged in two stages, upper and lower, and the opposite ends of the upper and lower X-shaped characters 6at 6b are pivotally connected, one of the lower ends of the lower One of the upper ends of the upper 1 character 6b is pivotally supported by the top plate 7, and the other end has a roller guided by a groove and supported so as to be horizontally movable. One end of an air cylinder 8 and one end of a piston rod 9 of the air cylinder 8 are pivotally connected to each intersection of the letters 1 6a and 6b, and the top plate 7 of the pantograph is expanded and contracted by the movement of the piston rod.
is raised or lowered. On the top plate 7 there are 6 on each 7dIJ side.
rollers 10 are pivotally supported so as to be continuous with the roller conveyor 3, and when the piston rod 9 is in the contracted position, the rollers 10
is connected to the roller conveyor 3 on the lower line, and at the extended position of the piston rod 9, the roller conveyor 3 on the upper line
connected to. The pallets 11 have a width of 1/218 of the length of the roller conveyor 6, and n pallets (six in this example) are placed and arranged along the entire length of the upper and lower lines. And a pallet 11 of the same shape as either pallet 7 4a or 4b
One is placed. In the upper line, the pallet 11 on the roller 10 of 1J7) 4a is lifted and placed on the roller conveyor 6 by the pallet feeding device 12 provided at the central position on the sending side between the roller conveyors 6.6. When the six pallets 11 are moved one pallet at a time as shown in the figure, the six pallets 11 are pushed one pallet at a time, and the one pallet at the last end is placed on the roller 10 of 4b, which is rising. A pallet is loaded. In addition, in the first stage line, the pallet 11 on the roller 10 of 7th 4b is lowered by the pallet feeding device 12 installed on the central nail on the sending side between the roller conveyors 3, and the pallet 11 is moved down to the roller conveyor 3.
When the pallets 11 are moved by one sheet so as to be placed on top of each other, the six pallets 11 stacked in a row are pushed together by one sheet, and the last one is placed on the roller 10 of 4a which is descending. pallets 11 are placed on it. Side plate 1 while moving the pallet
6, and its terminal end is positioned by a stopper 5a of the lift frame. The structure of the feeding devices 12 is the same, and they are mounted in opposite directions and are mounted to the frame 1 at a position below the roller conveyor 6.
A pawl receiver 18 is provided perpendicularly to the end of the rod 17 of the piston 16 fitted in the piston 5, and the piston 16 is guided by a guide rod 19 that is passed through holes penetrated on both sides of the air cylinder 15 in the bracket 14. When the piston 16 moves, it is moved in parallel. The pawl receiver 18 is biased by a spring 20 to protrude upward and can move up and down, and has an inclined surface 2 on the outside of the top.
A claw 21 with a width of 11L is provided.

When the rod 17 is extended, this pawl 21 is pushed in with the inclined surface 21a abutting against the end of the pallet 11, and during the forward movement, the pawl 21 slides under the pallet 11. When it passes the pallet 11, it pops out and lifts) 4&or 4b. Engaged with the outer edge of the upper pallet 11, the narrow end of the rod 17 correctly transfers the pallet 11 from the lift onto the roller fan pair 6. Along with this, other pallets 11 are sent one by one. It is also possible to move the lift up and down by using an air cylinder to drive the lift, or by connecting the pivot joints at both ends of the upper X-shaped shoulder and the lower X-shaped end with a screw and turning the screw with a motor. .

Operation 7) 4a is connected to the lower line, 4b is connected to the upper line, and 6 pallets 11 are transposed to the upper line and are not placed on 1J7) 4b, and the lower line is A total of 7 materials, 6 materials and 1 material on 4a, are placed on the pallet 11 on the upper line, and for example, 6 materials are placed on the pallet 11 on the upper line 4a. When the material is placed on the pallet manually or by a robot, etc., it is divided into 3 equal parts in line in the width direction (for peace of mind, the location is marked on the pallet). Pressurized air is sent to the lower chamber of the air cylinder 8, the piston rod 9 is extended, and the roller 10 of the top plate 7 is
The upper pallet 11 is aligned with the pallet 11 on the upper line. Next, the pressure air is 'rA'x behind the air cylinder 15 of the feeding device 12, and the rod 17 is extended by 4.

The sloped surface 21a at the top of the claw 21 is pushed in by the lower edge of the pallet 11 on the roller 10, and the claw 21 is pushed in by the lower edge of the pallet 11 on the roller 10. (by the force of the spring 20) 1 engages with the outer edge of the kick-out pallet 11. Air cylinder 15 011
When the pressure air is switched to the chamber and the rod 17 is made smaller, the claw 21
will pull the pallet 11, and all pallets 11 on the upper line will move by one pallet width to the robot receiving side,
The pallet 11 on the lift 4a is placed on the roller conveyor 6, and the pallet 11 on the roller conveyor 6 is placed on the lift) 4b
The robot is moved up and follows the robot and comes into contact with the stopper 5a and stops at the robot receiving position. At this position, the material is electrically transmitted to the machine tool by a robot (not shown). During this time, pressurized air is switched to the royal air cylinder 8 of 97) 4a, the piston rod 9 is contracted, and the roller 10 on the top plate 7 is connected to the roller conveyor 3 on the lower stage.

When all the materials on the 43 pallets are transferred to the lift 4b and processed products are placed in their place, pressurized air is switched to the upper chamber of the air cylinder 8 of 7th 4b, and the piston rod 9 is removed. 7. Lower the top plate 7 of the top 4b and sheave the pallet 11 by 31 degrees to the -1 part of the pallet 11 on the lower line.

Next, the air cylinder 1 of the lower feeding device 12 in the - direction
Pressurized air is sent to the end of 5 to crystallize 11 and 17, and push out claw 21. The claw 21 has an inclined surface 212 that is connected to the pallet 1.
1 and pushed down, and when the pallet 11 comes out by crawling under the pallet 11, it pops out and locks with the outer edge of the pallet 11.

Switch the pressure night air to the @If chamber of the air cylinder 15, make the rod 17 smaller and lift it with the claw 21) Pallet 11 on 4b
is pulled, all the pallets 11 on the lower stage are moved by one pallet, and the pallets 11 are sent onto the rollers 10 of the lift 4a. At this point, the Ijl workpiece is taken out and transported to the next process, and a new material is placed on it.

Effects As detailed above, the present invention has two lines, upper and lower, and a lift is provided at both ends of the line to connect the upper and lower lines.
Yubaret 11; 1 is placed on 4 pieces without a pallet for a lift powered by another force? Since the 7 pieces can be moved up and down alternately, the work table of Tsutatonkiri 1 Puppet Craft 1yI River can be stored in a small space, and there is little need to install it.
C corner, f7 has the effect that the receiving position of the machining cut is low and C is easy to handle fJ).

4. Extraction Il/) Brief explanation Figure 1 is a perspective view of the work table of the present invention. 4. j212
I can see the pallet feeder 17 in the Gino's manual.

2 Troller 6...Roller conveyor 4a+ 4'b...Lift 11...Pallet 8.15...Air cylinder 18...Claw receiver 21
...nail patent singer

Claims (1)

[Claims] (1) Connect the upper line on the material transport side with double rows of roller conveyors, the lower line on the processed product transport side with double rows of roller conveyors, and the end of the upper line and the end of the lower line. two pantograph-type lifts having a group of rollers following the roller conveyor on the upper surface; n pallets each having a width divided into n equal parts of the line length arranged on the entire surface of the roller conveyor of the upper and lower lines; One pallet having the same shape as the pallet placed on a group of rollers of one lift, a drive device for raising and lowering the lift, and a side of the pallet on the lifted lift provided on the sending side of the upper line. a feeding device that engages with the edge to feed one pallet; and a feeding device that is provided on the sending side of the lower line and engages with the side edge of the pallet on the lowered lift to move the upper pallet in a direction opposite to the feeding direction. A work table characterized by being equipped with a feeding device for feeding one pallet.