JPH0312418Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is applicable to various types of processing such as cutting, punching, and notching of long sections such as angle steel, I-beam steel, and steel strip. This relates to a device that moves a turntable that supports a plurality of molds back and forth in steel processing equipment. More specifically, when a handle is used to rotate a rotatable rotating shaft provided on the machine body for moving the turntable in the front-back direction, the turntable rises relative to the machine body prior to the back-and-forth movement of the turntable. The present invention relates to a turntable back-and-forth movement device having a configuration in which:

(Prior art) Conventional shape steel processing equipment is, for example,
As shown in Publication No. 32453, it has a structure in which a work support device that extends widely in the left and right direction to support a long work is provided so as to be movable in the front and back directions with respect to the machine body, and various types of processing can be performed on the work. The turntable with multiple molds was simply attached to the fuselage so that it could rotate freely. Therefore, the positioning of the workpiece relative to the mold in the front-rear direction is performed by moving a long workpiece support device in the left-right direction back and forth, which is complicated in structure and requires labor. Ivy.

As an example of a structure in which a turntable supporting a plurality of molds is moved back and forth in place of the workpiece support device, there is, for example, Japanese Patent Application Laid-Open No. 57-184524 (hereinafter simply referred to as a prior example). In the prior example, the turntable is moved back and forth by rotating a screw shaft by a motor, and the turntable is not pushed up prior to the back and forth movement.

(Problem to be solved by the invention) By the way, when processing a workpiece using a mold supported on a turntable, the mold positioned at the processing position is struck by a ram provided in the section steel processing device. Since the turntable is pressed, an unbalanced load will be applied to the turntable when machining the workpiece. It is undesirable for this uneven load to cause deformation of the rotating shaft of the turntable or deformation of the positioning portion of the turntable to the processing position.

Therefore, it is possible to prevent the deformation caused by the uneven load by supporting the turntable from below at the processing position, which is desirable. However, in this case, a problem arises in that contact friction between the lower surface of the turntable and the support portion requires a large amount of power when rotating and moving the turntable back and forth.

(Purpose of the invention) This invention was made in view of the above-mentioned problems. When attempting to manually move the turntable back and forth, the turntable is pushed up slightly before moving back and forth. It is an object of the present invention to provide a turntable back and forth movement device that can easily move a table back and forth.

(Example) Hereinafter, an example of the present invention will be described in detail using the drawings.

To facilitate understanding, first, the overall configuration of the shaped steel processing apparatus will be explained.

As is clear from FIGS. 1, 2, and 3, the section steel processing apparatus 1 has C-shaped left and right frames 3.
Comprehensive aircraft 5 made by integrally assembling a and 3b
It is more than that. A work support device 7 extending in the left-right direction is provided on the front side of the machine body 5 to support a long work W such as angle iron. Further, a turntable 11 equipped with a plurality of molds 9 for appropriately processing the workpiece W supported by the workpiece support device 7 is mounted on the machine body 5 so as to be rotatable, movable back and forth, and movable up and down. It has been done.
Furthermore, a ram 13 is mounted on the machine body 5 so as to be able to move up and down, and presses a mold 9 that is indexed and positioned at a processing position to process the workpiece W. This ram 13 is moved up and down by a hydraulic cylinder or a crank mechanism and may have a general configuration, so a detailed explanation of the ram 13 will be omitted.

The work supporting device 7 includes a left extending portion 7L extending leftward from a table 15 fixed to the machine body 5.
and a right extending portion 7R extending rightward in a straight line. The left and right extending portions 7L and 7R have a channel shape, and their base end portions are supported by the table 15, and their respective tip portions are connected to support columns 17 provided apart from the fuselage 5.
It is supported by L and 17R. A plurality of support rollers 19 that support the workpiece W are rotatably supported by the left and right extending portions 7L, 7R and the table 15. Therefore, the plurality of support rollers 19
The work W supported over the right extending portion 7R
It can be smoothly moved from the side to the left extending portion 7L side or vice versa.

Left extending portion 7L in the workpiece support device 7
A dog bar 21 extending parallel to the left extending portion 7L is provided at the portion. The dog bar 21 supports a plurality of dogs 23, one end of which is rotatably supported by a bearing block 25 attached to the table 15, and the other end rotatably supported by a bearing 27 attached to the support column 17L. is supported by.
The plurality of dogs 23 are supported by the dog bar 21 so as to be able to adjust and fix their positions freely, and as shown in FIG. ing. Each dog 2
3 can be attached to the dog bar 21 with a phase difference with respect to other dogs 23. In this embodiment, the dogs 23 can be attached to the dog bar 21 with phase differences set in three stages. It is. Note that the dog 23 can be attached to and detached from the dog bar 21 using a general method.
A detailed explanation of its configuration will be omitted.

At one end of the dog bar 21, there is a
As shown in the figure, a disc 3 with a lever 29
1 is integrally installed. Therefore, the dog bar 21 can be rotated by operating the lever 29. At the eccentric position of the disk 31, there is a fourth
As shown in detail in FIGS. 5 and 5, the tip of a first piston rod 35 in a cylinder device 33 whose base is pivotally supported on the body 5 is pivotally connected via a pivot 37. The cylinder device 33 is for rotating the dog bar 21, and includes a first piston 39 that is slidably integrated with the first piston rod 35 and a second piston rod 41.
The second piston 43 is slidably integrated with the second piston 43.

That is, the cylinder device 33 is composed of a so-called two-stage cylinder.
The first piston 39 can be positioned in three positions: a position at both stroke ends and a position regulated by the second piston rod 41 between the two stroke ends. Therefore, by appropriately controlling the cylinder device 33, the dog bar 21 can be rotated in three steps, and the cutout portion of the dog 23 attached to the dog bar 21 can be rotated in three steps with a phase difference. can all be directed upward.

As understood from the above configuration, dog bar 2
When the rotation of the dog bar 21 is automatically performed, it is regulated by the three-stage stroke end of the first piston 39 in the cylinder device 33, so the rotation index of the dog bar 21 can be performed at high speed and with high precision. It is something that can be done.

Further, a plate-shaped rail 45 extending in the left-right direction is provided at the left extending portion 7L of the workpiece support device 7, and the workpiece W supported by the workpiece support device 7 is mounted on this rail 45. A carriage 49 equipped with a stopper 47 whose distal end can be freely abutted is supported so as to be able to reciprocate in the left and right direction.

The carriage 49 positions the workpiece W in the left-right direction, and in this embodiment, as shown in FIGS. 6 and 7, the carriage 49 has a plurality of roller 5
It is movably supported on rails 45 via 1. Part of this carriage 49 includes:
A support bar 53 is provided extending parallel to the direction of movement of the carriage 49, and a slide block 57 biased leftward by a spring 22 is slidably supported on the support bar 53. A portion of the carriage 49 can freely come into contact with a plurality of dogs 23 attached to the dog bar 21, and can freely pass through the position of the dog 23 when it corresponds to the notch of the dog 23.

Therefore, as shown in FIG. 2, when the workpiece W is pushed to the left while the tip of the workpiece W is in contact with the stopper 47 of the carriage 49, the workpiece W and the carriage 49 are integrally moved. The workpiece W is positioned in the left-right direction by moving to the left, and the carriage 49 comes into contact with the dog 23 and stops moving. At this time, by appropriately rotating the dog bar 21 by operating the cylinder device 33 or operating the lever 29, the dog 23 with which the carriage 49 comes into contact with or passes through can be appropriately selected, and the workpiece W can be moved as preset. Positioning in the left and right direction is performed sequentially.

As shown in FIG. 1, an endless chain 59 is provided at the left extending portion 7L of the workpiece support device 7 in order to return the carriage 49 to its original position on the right side. This endless chain 59 is wound around a driving sprocket 61 and a driven sprocket 63 which are rotatably provided near both ends of the left extending portion 7L, and both sprockets 61,
It is stretched by a guide plate 65 that is swingably provided in the vicinity of the guide plate 63 . The drive sprocket 61 is connected to a motor 67 mounted on the left extending portion 7L.
(See FIG. 7) are interlocked and connected via a plurality of sprockets 69 and a chain 71. Furthermore, the carriage 4 is installed at a plurality of locations on the endless chain 59, in two symmetrical locations in this embodiment.
A hook 73 that can freely come into contact with the slide block 57 provided at 9 is provided. Furthermore, a switch device 75, such as a limit switch, is disposed adjacent to the drive sprocket 61 and stops the rotation of the motor 67 when actuated by the hook 73.

Therefore, after sequentially moving the work W and the carriage 49 to the left as described above, the work W
If necessary, the dog bar 21 is rotated to prevent the carriage 49 from coming into contact with the dog 23, and then the motor 67 is driven to move the drive sprocket 61 to the first position. When rotating clockwise in FIGS. 1 and 7, the hook 73 provided on the endless chain 59 comes into contact with the slide block 57 provided on the carriage 49. Therefore, the carriage 49 is returned to its original position on the right. After the carriage 49 has been returned to its original position as described above, when the hook 73 provided on the endless chain 59 leaves the carriage 49 and moves down along the drive sprocket 61, actuating the switch device 75 causes the motor 67 to stop. be done. That is, according to this embodiment, the carriage 49 that has been moved leftward along the left extending portion 7L is returned to its original position rightward by an extremely simple structure.

Note that the horizontal positioning of the workpiece W is not limited to the above-mentioned embodiment, and for example, as is known, a carriage 49 and a chain may be connected, the chain may be rotated by a servo motor, and detection may be performed using a rotary encoder or the like. It is also possible to use a configuration in which the positioning of the carriage 49 is performed by a control device using the device. As mentioned above, it is already known that the positioning of the carriage 49 is carried out using fieldback control, so a detailed explanation thereof will be omitted.

The turntable 1 supports a plurality of molds 9
1, as shown in FIGS. 8 and 9, is rotatably and vertically supported on a slide base 77 that is supported so as to be movable in the front-rear direction (left-right direction in FIGS. 8 and 9). This is what has been done.

That is, the slide base 77 is supported so as to be movable in the front-back direction by a plurality of guide bars 81 whose front and back ends are supported by front and rear beam members 79 installed between the left and right frames 3a and 3b. Approximately in the center of this slide base 77 is a table shaft 83 that is integrally fixed to the turntable 11.
is supported to be rotatable and movable up and down. In order to slightly raise the turntable 11,
Turntable push-up device 8 on slide base 77
5 is installed. In this example, the ninth
As shown in the figure, a cylinder device 8 is provided on the slide base 77 as a turntable pushing device 85.
The table shaft 83 is rotatably supported by a vertically movable piston 87 in FIG. A chain 8 is provided on the circumferential surface of the turntable 11.
9 is attached to the chain 89, and a sprocket 91 is meshed with the chain 89. Above sprocket 9
1 is attached to an output shaft 97 of a motor 95 attached to a bracket 93 fixed to the slide base 77.

With the above configuration, the turntable push-up device 85
By operating the motor 95, the turntable 11 is slightly raised relative to the slide base 77 and the front and rear beam members 79, and by operating the motor 95, the turntable 11 is rotated. The operation of the turntable lifting device 85 is controlled by switching a solenoid valve (not shown), and the turntable lifting device 85 is controlled by switching a solenoid valve (not shown).
1 is lowered by its own weight.

As already understood, when the turntable 11 rotates and moves back and forth, the slide base 7
7. Turntable 1 for front and rear beam members 79
1 is pushed up to a slightly floating state,
For example, when the turntable 1 is in the lowered state,
1 is the front beam member 7 as shown in FIG.
Even when the turntable 11 is supported by the turntable 9, the turntable 11 can be easily rotated and moved back and forth.

A nut member 99 (see FIG. 8) is fixed to the slide base 77 in order to move the slide base 77 back and forth along the guide bar 81.
A threaded portion 101a formed at the rear end of the rotating shaft 101 is screwed into the nut member 99. The rotating shaft 101 is provided parallel to the guide bar 81 and is rotatably supported by a cylindrical shaft bearing portion 5a that projects forward from the body 5.

At the front end of this rotating shaft 101, there is a rotating shaft 101.
The handle 10 is slightly rotatable relative to the
3 is installed. A collar 105 is integrally attached to the handle 103, and this collar 1
05 is fixed with a pin 109 fitted into a notched groove 107 formed at the end of the rotating shaft 101. Therefore, the range of relative rotation between the rotating shaft 101 and the handle 103 is limited to the range of the notch groove 107.

A shaft bearing 111 is provided at the end of the shaft bearing portion 5a of the body 5.
An annular cam member 113 is supported via. A portion of the cam member 113 includes the shaft bearing portion 5a.
A rod-shaped spring member 115 attached to the is passed through,
Due to the action of this spring member 115, it is always biased to be located at a normal position (neutral position). The cam member 113 has a recess 113a (11th
(see figure) is formed and a pin 117 is attached. The pin 117 can freely come into contact with a plurality of stopper pins 119 attached to the shaft bearing portion 5a. That is, the rotation range of the cam member 113 is restricted by the stopper pin 119.

The recess 113a of the cam member 113 has an actuator 12 of a switch device 121, such as a limit switch, as a detection actuator attached to the shaft bearing 5a.
1a is engaged. Therefore, the cam member 11
3 rotates slightly clockwise or counterclockwise in FIG.
21 is activated. The switch device 121 functions to operate the turntable push-up device 85 when activated.

A flange member 125 having an annular friction plate 123 that can freely come into contact with the side surface of the cam member 113 is supported on the collar 105 so as to be slidable in the axial direction. Flange member 12 for collar 105
5 is rotated by a pin 127 fixed to the collar 105.
is regulated by passing through the flange member 125. A coil spring 129 is elastically loaded between the flange member 125 and the collar 105, and the flange member 125 is always connected to the cam member 1.
It is biased in the direction of 13.

Therefore, when the handle 103 is rotated to move the turntable 11 back and forth, the cam member 113 is first rotated against the spring member 115 due to the friction between the friction plate 123 and the cam member 113, and the switch device 121 is activated. Due to the operation of this switch device 121, the turntable pushing device 8
5 is activated, and the turntable 11 is raised relative to the slide base 77 and the like. When the handle 103 is further rotated, the pin 109 provided on the collar 105 comes into contact with the end of the notched groove 107 formed in the rotating shaft 101, and the handle 103 and the rotating shaft 101 rotate together. Therefore, due to the rotation of the rotating shaft 101, the turntable 11
is moved back and forth via the slide base 77. When the rotating shaft 101 is rotating as described above, the pin 117 provided on the cam member 113 comes into contact with the stopper pin 119, and the cam member 113
The rotation of the cam member 113 and the friction plate 12 is stopped.
There is a slippage between the two.

After rotating the rotating shaft 101 to move the turntable 11 back and forth as described above, the handle 10
When the rotation of the cam member 11 is stopped and the hand is released from the handle 103, the cam member 11 is moved by the action of the spring member 115.
The recess 113a of No. 3 is returned to the position corresponding to the switch device 121. As mentioned above, the cam member 11
3 is returned, the handle 103 is also returned relative to the rotating shaft 101 via the friction plate 123, and the pin 109 provided on the collar 105 is positioned approximately in the center of the notch groove 107 of the rotating shaft 101. I will do it. Therefore, when the handle 103 is next rotated in the same direction or in the opposite direction, the switch device 121 is operated in the same manner as described above, and the turntable 11 is rotated before the turntable 11 is moved back and forth.
is raised.

As is clear from the above description, in this embodiment, the shaped steel processing apparatus 1 brings the tip of the workpiece W supported by the workpiece support device 7 into contact with the stopper 47 provided on the carriage 49, and the dog bar 21 The workpiece W is positioned in the left-right direction by positioning the carriage 49 in contact with a dog 23 attached to the workpiece W.

The selection of the mold 9 for processing the workpiece W is carried out by rotating the turntable.
Since the turntable 11 can be slightly raised and maintained in a state where there is no contact with the slide base 77, the front and rear beam members 79, etc., the turntable 11 can be turned easily.

After rotating the turntable 11 to select the mold 9, the handle 103 is operated to move the turntable 11 forward, and as shown in FIGS. 2 and 3, the mold 9 is supported by the turntable 11. The mold 9 is a work W supported by the work support device 7
It is advanced and positioned until it reaches the processing position. Therefore, the mold 9 does not need to be moved relative to the turntable 11, and the mold 9 can be fixed to the turntable 11 in the same manner as in the prior art.

[Effects of the invention] As can be understood from the above description of the embodiments, in short, the present invention provides a workpiece support device 7 on the front side of the machine body 5 that supports a long workpiece W so as to be movable in the left-right direction, A turntable 11 supporting a plurality of molds 9 for processing the workpiece W,
The machine body 5 is provided with a ram 13 that is rotatably supported on a slide base 77 that is supported on the machine body 5 so as to be movable back and forth, and that is movable up and down. In a device for moving a turntable back and forth in a shaped steel processing device, a turntable push-up device 85 that can freely push up the turntable 11 is mounted on the slide base 77.
and a handle 103 attached to one end of a rotary shaft 101 rotatably provided on the body 5 in order to move the slide base 77 in the front-back direction.
is rotatable by a predetermined angle with respect to the rotating shaft 101, and a friction plate 123 provided on the handle 103 is provided.
A cam member 1 is provided on the shaft bearing portion 5a of the body 5 so as to be rotatable and biased toward a neutral position in the rotation direction.
A switch device 121 is provided in pressure contact with the cam member 113 to detect rotation of the cam member 113 from a neutral position in the rotation direction, and upon detection by the switch device 121, the turntable lifting device 85 is actuated to raise the slide base. The turntable 11 is pushed up prior to the back and forth movement of the turntable 77.

With the above configuration, according to the present invention, when the handle 103 is turned to move the turntable 11 back and forth, the cam member 113 is first rotated from the neutral position by the contact friction with the friction plate 123, and the switch device is rotated. 121 is activated, this switch device 121
The turntable push-up device 85 is actuated by the operation of
etc., it is slightly pushed up. Next, the rotating shaft 101 is rotated by the rotation of the handle 103, and the turntable 11 is moved back and forth via the slide base 77.

That is, according to the present invention, the turntable 11
Since the turntable 11 is slightly pushed up prior to the back and forth movement of the turntable 11, the turntable 11 is moved back and forth even while floating from the support portion (for example, the beam member 79 in the embodiment). It can be moved forward and backward easily and manually.

Note that this invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments by making appropriate design changes.

[Brief explanation of drawings]

FIG. 1 is a front view of the shaped steel processing apparatus, FIG. 2 is a plan view, and FIG. 3 is a right side view. FIG. 4 is a front view showing the dog bar rotation device, and FIG. 5 is a side view thereof. FIG. 6 is a side sectional explanatory view of a part of the workpiece support device, and FIG. 7 is a front explanatory view thereof. FIG. 8 is a plan view showing a section of a part of the main part, and FIG. 9 is a side explanatory view showing that part. 10 and 11 are cross-sectional views taken along the - line and the XI-XI line in FIG. 8, respectively. 5... Body, 7... Work support device, 9... Mold, 11... Turntable, 13... Ram, 4
9...Carriage, 77...Slide base, 8
5... Turntable push-up device, 101... Rotating shaft, 103... Handle, 123... Friction plate, 5
a... shaft bearing part, 113... cam member, 121...
Switch device.

Claims (1)

[Scope of utility model registration request] A work support device 7 that supports a long workpiece W so as to be movable in the left-right direction is provided on the front side of the machine body 5, and a turntable 11 supporting a plurality of molds 9 for processing the workpiece W is attached to the machine body 5. The machine body 5 is provided with a ram 13 which is rotatably supported on a slide base 77 which is supported so as to be movable back and forth, and which is movable up and down on the body 5 and which can press the mold 9 positioned at the processing position. In a device for moving a turntable of a steel processing device back and forth, a turntable push-up device 85 that can push up the turntable 11 is provided on the slide base 77, and a turntable push-up device 85 is provided on the slide base 77 to move the slide base 77 back and forth. A handle 103 is attached to one end of a rotatable shaft 101 and is rotatable by a predetermined angle with respect to the rotary shaft 101.
The friction plate 123 provided in 03 is provided in pressure contact with the cam member 113, which is rotatably provided on the shaft bearing portion 5a of the body 5 and biased toward a neutral position in the rotation direction. Cam member 11 from position
A switch device 121 for detecting the rotation of 3 is provided,
A turntable back-and-forth movement device for a shaped steel processing device is characterized in that the turntable push-up device 85 is actuated by the detection of this switch device 121 to push up the turntable 11 prior to the back-and-forth movement of the slide base 77. .