KR0126297B1 - Working method and working apparatus for work piece - Google Patents

Abstract

Reduce the occupied space in the width and length of the device.

The work stand 4 installed on the work conveying path 1, the welding robot 5 installed on the work stand 4, and the workpiece W are welded by the welding robot 5. The work processing method which comprises the work station 3 by the positioners 6 and 6 which hold | maintains it, and removes the workpiece | work W conveyed by the conveyance trolley 2 above the workpiece conveyance path 1, and welds it; Copper device.

Description

Workpiece processing method and copper device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a workpiece processing method and a copper apparatus for use in an arm of a hydraulic excavator or a pipe welding line of a boom.

(Conventional technology)

The prior art will be described taking an example of a pipe welding line for manufacturing a component of a hydraulic excavator, that is, an arm, a boom, a crawler frame, a vehicle body, and the like.

In the conventional workpiece processing apparatus, as shown in FIG. 6, a plurality of work stations B ... are arranged on the side of the workpiece conveying path A as the workpiece conveying space at intervals in the workpiece conveying direction, and the conveyance bogie The workpiece | work W conveyed by (C) is taken out from the conveyance path A to the work station B for every work station B ..., and the welding work of each part is performed in order.

Each work station B has a positioner E and E as work support means for positioning and supporting the welding robot D as a working machine and the work W at a machining position by the welding robot D. FIG. It is installed.

By the way, according to the conventional technique which employ | adopted the so-called sieving method which takes out the workpiece | work W to the side of the conveyance path A in this way, the width dimension of the whole line becomes the conveyance path width + work station width, and creates a large width direction space. It was to occupy.

In the case of processing a long object such as an arm or a boom, in order to suppress an increase in the occupied width dimension, as a result, the workpiece is conveyed in a lengthwise state with respect to the conveying direction, resulting in a longer line length. There is a big problem that the number of lines (devices) that can be installed in a limited factory space is reduced.

Thus, the present invention provides a workpiece processing method and a copper apparatus capable of reducing the space occupied in the width and length directions.

(Means to solve the task)

The invention of claim 1 is to take out a workpiece conveying in the workpiece conveyance path to the upper side of the workpiece conveyance path and to process it by a working machine while being supported at this position, and return it to the workpiece conveyance path after processing.

The invention according to claim 2 is a work conveying path as a work conveying space, a work conveying means for conveying a work in the work conveying path, a work station provided on the work conveying path, and a work in the work conveying path and the work station And a work transfer means for moving the workpiece between the work station and the work station installed like the transport path, and the work machine and the work installed in the work station at a machining position processed by the work machine. It is composed of a workpiece support means for supporting.

In the invention of claim 3, in the configuration of claim 2, the work station is provided at a plurality of longitudinal conveyance paths of the workpiece conveying path.

The invention according to claim 4, wherein in the constitution of claim 2 or 3, a transport cart for moving the inside of the workpiece transport path is provided as the workpiece transport means, and the workpiece is processed at the work station as a means for exchanging the workpiece with the transport cart. An elevating mechanism for elevating and moving between the position and the conveying position in the conveying path is provided.

The invention of claim 5 is that the work machine is attached to the outer surface of the ceiling of the work table according to any one of claims 2 to 4.

The invention of claim 6 is that the work machine is attached to the inner surface of the ceiling of the work table according to any one of claims 2 to 4.

According to the invention of claim 7, the base is attached to the bottom surface of the workpiece conveyance path in any one of claims 2 to 6, and the work stand sandwiches the conveyance path and is provided between the side member and the side member. It is comprised by the installed top plate, The said side member is detachably connected with respect to the said base and the top plate.

1 is a schematic perspective view of the entire apparatus showing the first embodiment of the present invention.

2 is a schematic plan view of the device of the embodiment.

3 is a schematic longitudinal side view of the apparatus of the embodiment.

4 is an enlarged front view of the device of the embodiment.

5 is a schematic longitudinal side view of the entire apparatus showing the second embodiment of the present invention.

6 is a schematic perspective view for explaining the prior art and its problems.

* Description of the symbols for the main parts of the drawings *

1: workpiece conveyance path 2: conveyance bogie as a workpiece conveying means

17: Lifting mechanism of conveyance bogie as means of exchanging workpieces

3: work station 4: work stand

8,8 side member of work stand 9: Dongcheonpan

7: mount base 5: welding robot as working machine

6: positioner as a means for supporting the workpiece

According to the said structure, since a workpiece is taken out and processed to the upper side of a workpiece conveyance path, compared with the case of the conventional side take-out system, the dimension of the footprint of the whole apparatus can be reduced.

In addition, when the long object is processed by reducing the device width dimension, the workpiece can be conveyed in a state that is horizontally long with respect to the conveying path, so that the longitudinal dimension of the apparatus can also be constructed.

Moreover, according to the structure of Claim 3, the process of a workpiece | work is divided | segmented in several work stations and it is performed efficiently.

On the other hand, according to the structure of Claim 4, since the workpiece is exchanged between a conveyance path and a work station only by the workpiece lifting action by the lifting mechanism of a conveyance trolley | bogie, the workpiece | work is carried out like the conventional method of taking out sideways. Compared with the case of lifting and moving sideways, the structure of the conveyance truck becomes simpler, and the cost of the vehicle is low.

According to the structure of claim 5, since the work machine (welding robot or the like) is installed on the ceiling surface of the work stand, the installation and removal work of the work machine becomes easy.

On the other hand, according to the structure of Claim 6, since a work machine is installed in the ceiling surface of a work stand, the ground height of this work machine becomes low and it becomes easy to teach online in the case of maintenance and a robot.

Moreover, according to the structure of Claim 7, since a work stand can be classified into a side member and a top plate, and can be attached to and pulled out with respect to a base, assembling, disassembly, and moving installation of the stand are easy. In addition, if a plurality of kinds of different height dimensions are prepared for the side member, the mount height can be changed in accordance with the type and characteristic of the workpiece (welding portion, etc.).

(Example)

An embodiment of the present invention will be described with reference to FIGS. 1 to 5.

First embodiment (see FIGS. 1 to 4)

1 is a workpiece conveyance path as a workpiece conveyance space, 2 is a conveyance bogie which conveys the workpiece | work W in this workpiece conveyance path 1, and 3 is a plurality of longitudinal direction places of the workpiece conveyance path 1 (only two places in the figure) Work station).

Each work station 3 is installed as if the conveying path 1 is seated, and then a pair of front and rear work benches 4 and 4 and welding robots 5 and 5 as working machines installed in the two racks 4 and 4. ) And positioners 6, 6 serving as workpiece support means provided on both left and right sides with the conveying path 1 interposed between the two stand 4,4.

In addition, the side mounts (8, 8) are installed on the right and left sides of the work mounts (4, 4) while sandwiching the conveying path (1) on a rectangular mount base (7) attached to the bottom surface of the workpiece transport path (1). And circularly formed by the top plate 9 horizontally attached between the upper ends of the side members 8 and 8, and the welding robot 5 on the outer surface of the ceiling of the work bench 4, that is, the top surface of the top plate 9; Is attached via the robot base 10.

Then, both side members 8 and 8 of the work stand 4 are provided with flanges 8a and 8b on both upper and lower sides, as shown in FIG. 4, and the upper flange 8a is disposed on the left and right sides of the top plate 9. The lower flange 8b is attached to the base plate flanges 9a provided at both ends and attached to the mount base 7 by bolts (not shown).

Thus, the worktable 4 can be disassembled into the side members 8, 8 and the top plate 9, and can be attached to and detached from the mount base 7.

This makes it easier to assemble, dismantle and move the device. In addition, when a plurality of kinds of different heights are prepared for the side members 8 and 8, the height of the side member, that is, the height of the worktable 4, is increased depending on the characteristics of the work W (size, welded portion, etc.). You can change it.

On the other hand, the positioners 6 and 6 are each configured by the positioner main body 13 being installed on the upper end of the support 12 which stands on the positioner base 11.

Although not particularly shown, the positioner main body 13 is provided with a clamp for holding and supporting the end of the work W and a rotating mechanism for rotating the clamp. The driving side and the other side are driven sides so that the work W can be rotated to an arbitrary angular position.

14 in FIG. 4 is a motor as this rotation drive source.

Then, the support 12 is attached to the slider 16 slidably attached to the slide base 15, and the positioners 6 and 6 are moved by the slider 16 by the sliding action of the slider 16 by a hydraulic cylinder or the like not shown. According to the size of (W), it is comprised so that a movement is possible in the direction approaching and separating from each other (the arrow of FIG. 4).

In addition, as shown in FIG. 4, the support 12 has flanges 12a and 12b on both upper and lower sides of the worktable 4 and the upper and lower sides thereof, and the upper flange 12a is provided. The lower flange 12b is attached to the flanger 13a of the positioner main body 13 so that the positioner base 11 can be attached and detached by a bolt (not shown), so that the positioners 6 and 6 are connected to the worktable 4. Likewise, it is demountable and height adjustable.

The conveyance trolley 2 is configured such that the upper plate 2a on which the work W is installed can be lifted and lowered by a known lifting mechanism 17 as a means for exchanging and exchanging a workpiece, which is operated in a pantograph manner using a hydraulic cylinder or the like as a driving source. By the lifting and lowering action of the upper plate 2a, the work W moves between the conveying position indicated by the solid line in FIG. 4 and the weld position by the welding robot 5 indicated by the same virtual line.

And this conveyance trolley 2 moves on the mount base 7 and the positioner base 11, and the rails 18 and 18 laid like a floor.

In this configuration, the work W is mounted on the conveyance trolley 2 to move in the conveyance path 1 and for each work station 3...

① It is sent to and received from the positioner 6 by the synergism of the conveyance trolley 2, and is supported at a predetermined welding position,

② In this state, a predetermined part is welded by the welding robot 5,

(3) After welding, it is returned to the conveyance trolley 2 again and is conveyed toward the next work station 3.

In this way, since the work W is taken out and welded above the work conveying path 1, that is, in the conventional method of taking out the side, the space above the conveying path 1, which is a dead space, is used as a work space. The occupied width dimension of the apparatus is smaller than in the case of the conventional side draw-out method which forms the work space on the side of the conveying path.

In addition, since the width dimension can be narrowed, the workpiece W can be conveyed in a state that is horizontally long with respect to the conveying path 1 as shown in the case of processing a long object, so that the longitudinal direction of the apparatus Dimensions can also be reduced.

In addition, since the work W is exchanged between the transport path 1 and the positioner 6 only by the work of lifting and lowering the work by the lifting mechanism 17 of the transport cart 2, Compared with the case where the system and the work can be raised and lowered and moved laterally, the configuration of the conveyance trolley 2 becomes simple, and the cost of the lighthouse trolley 3 is low.

In addition, in this embodiment, since the welding robot 5 is provided in the ceiling outer surface of the working stand 4, the installation work of the welding robot 5 with respect to the work stand 4 becomes easy.

Second Embodiment (See Fig. 5)

Only differences from the first embodiment will be described.

In the first embodiment, the welding robot 5 is attached to the ceiling outer surface (upper surface of the top plate 9) of the work bench 4, whereas in the second embodiment, the work bench 4 is mounted in the first embodiment. It is formed higher than the case, and the welding robot 5 is attached downward to the ceiling inner surface (lower surface of the top plate 9).

This makes it possible to lower the ground height of the welding robot 5 as compared with the case of the first embodiment, so that maintenance of the welding robot 5 and teaching on-line are easy.

By the way, although the positioner 6 which has a rotation function was used as a workpiece support means in the said Example, you may use the clamp mechanism which only supports a workpiece | work without a rotation function.

On the other hand, as the workpiece conveying means, a conveyor may be used instead of the conveyance trolley 2 in the above embodiment. In this case, a ceiling crane may be used as a means for exchanging workpieces, or a workpiece elevating mechanism may be provided on the worktable 4.

In addition, in the above embodiment, the work stand 4 is configured to be disassembled, but the work stand 4 may be formed as an integral body, and the shape of the work stand 4 is not limited to a door shape, but an arch shape or the like. You may make it.

In addition, the present invention can be applied not only to the above-described welding line but also to coating and other various workpiece processing lines.

According to the present invention as described above, since the workpiece is taken out and processed above the workpiece conveying path, as compared with the case of the conventional side take-out method,

(A) The occupancy dimension of the device can be reduced.

(B) In addition, when the long dimension is processed by narrowing the width dimension, the workpiece can be conveyed in a state that is horizontally long with respect to the transport path, so that the longitudinal dimension of the apparatus can be reduced.

As a result, the line can be expanded.

In addition, according to the invention of claim 3, the machining step of the workpiece is divided into a plurality of work stations and performed efficiently.

On the other hand, according to the invention of claim 5, since the transfer of the workpiece between the workpiece conveyance path and the work station is performed only by the lifting and lowering action of the workpiece by the lifting mechanism of the conveyance trolley, as in the conventional method of taking out sideways, Compared with the case of lifting and moving the workpiece to the side, the structure of the conveyance bogie becomes simpler, and the cost of the bogie is reduced.

Further, according to the invention of claim 5, since a work machine (welding robot or the like) is provided on the ceiling surface of the workbench, the installation and removal work of the work machine becomes easy. On the other hand, according to the invention of claim 6, since the work machine is installed on the inner surface of the ceiling part of the work stand, the height of the magnetic field of the work machine is lowered, and the online teaching in the case of maintenance and robot is easy.

According to the invention of claim 7, the work stand can be divided into a side member and a top plate, and can be attached to and detached from the base, so that the assembly, disassembly and moving installation of the stand can be easily performed. In addition, if a plurality of kinds of different height dimensions are prepared for the side member, the mount height can be changed in accordance with the type and characteristic of the workpiece (welding portion, etc.).

Claims (7)

A workpiece processing method, wherein a workpiece for transporting in the workpiece transport path is taken out of the workpiece transport path and returned to the workpiece transport path after processing by a working machine while being supported at this position. Mounting base, positioner base, work conveying path as a work conveying space laid on the floor, work conveying means mounted on the conveying path for conveying the work in the work conveying path, and work conveying path A work station composed of a side member installed on the base and fitted with a conveying path, and a top plate provided between the side members, and a means for transferring a workpiece between the work conveying path and the work station. The work station is composed of a work stand installed as if the seat is conveyed, a work machine installed on the work stand, and a work support means for supporting the work piece at a machining position processed by the work machine. Workpiece processing equipment. The workpiece processing apparatus according to claim 2, wherein the work station is provided at a plurality of longitudinal conveyance paths of the workpiece conveying path. The conveying bogie which moves in a workpiece conveyance path as a workpiece conveyance means, Comprising: The workpiece | work is conveyed between the process position in a work station and the conveyance position in a conveyance path as a means to send and receive a workpiece to this conveyance bogie. Workpiece processing apparatus, characterized in that the lifting mechanism is installed to move in and out. 3. The workpiece processing apparatus as claimed in claim 2, wherein the work machine is attached to the ceiling surface of the workbench. The workpiece processing apparatus according to claim 2, wherein the work machine is attached to the inner surface of the ceiling of the work bench. The workpiece processing apparatus according to claim 2, wherein a base is attached to the bottom surface of the workpiece conveyance path, and the side member is connected to and detachable from the base and the top plate.