JPH0530813Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention The present invention relates to a bending machine for bending a plate material, and more specifically, a bending machine that is provided above a bottom die that supports the plate material so as to be movable up and down. The ram is provided with a top die that presses the plate material to the bottom die, and when the plate material is pressed and fixed to the bottom die by the top die, a bend beam that bends the edge portion of the plate material upward is movable up and down. The present invention relates to a sheet material bending machine prepared for

[Technical Background of the Invention and Problems of the Conventional Device] First, the conventional device as the background of the invention will be explained based on FIGS.

The front view in Fig. 5 and the side view in Fig. 6 show an example in which the present invention is incorporated into a plate processing line, in which the plate to be processed is fed in a horizontal state, and the folding machine in the previous stage is used to fold the plate. An opposed type bending machine is shown in which the leading edge of the workpiece is bent and raised, and then the workpiece is moved in the feeding direction, and a subsequent folding machine bends and stands up the trailing edge of the workpiece.

That is, the facing type bending machine 1 has a horizontal bottom die 107 symmetrically with respect to a center line 105 (see FIG. 6) at the middle height of a machine frame 103 constructed in a portal shape by appropriately combining shapes and the like. , 107 (sometimes called a table, lower plate, lower mold, etc.) are provided.

Above the bottom dies 107, 107, there is provided a ram 111 which is moved up and down by being driven by hydraulic cylinders 109, 109 attached to, for example, the left and right side walls of the machine frame 103 (see FIG. 5).

The bottom die 1 described above is attached to the bottom surface of this ram 111.
Top die 113, 11 corresponding to 07, 107
3 (sometimes called upper mold, upper mold, upper plate, etc.) is attached.

Plate material 11 as a workpiece to be bent
5 is the bottom die 107 and top die 1 described above.
13 and is fixed so as to protrude toward the center line 105 by a width that is bent between the two ends.

At the center of the lower surface of the ram 111 described above, a columnar protruding member 117 as shown in FIG. 6 is provided.
Gradient guides 119, 119 are provided on both sides thereof so as to be vertically adjustable.

The bottom die 107 and slope guide 119 described above
Bend beams 121, 121 (sometimes called bending dies, bending disks, rotary tables, etc.) are provided between the fluid pressure cylinders 123,
123 Elevating and descending movements are performed by eccentric devices 125, 125.

In the above explanation, the plate material 115 is
Place it on top of the plate material 11 with the top die 113.
When fixing by pressing down on the top die 113, the bending line edges 127, 127 of the top die 113 (see Figs. 7 and 8)
The width dimension that protrudes from the center line 105 side is the bending dimension.

Furthermore, there is a material abutting gauge device 1 that can freely appear and retract at positions corresponding to the bending line edges 127, 127.
29 is provided.

In Figures 7, 8, and 9, bottom die 1
07, 107, a multi-stage fluid pressure cylinder 133 is provided in the vertical direction via a base plate 131 on the machine frame 103 that connects the machine frame 103 in the left-right direction, and vertical guide bars 13 are provided on both sides thereof.
5,135 are provided.

At the upper end of the protruding piston rod 137 of the fluid pressure cylinder 133, the guide bar 135,1
Gauge case 139 that can be raised and lowered by being guided by 35
is provided.

At a position farthest from the base plate 131 of the gauge case 139, a tubular bearing case 141 is provided vertically downward by means such as welding.

When the gauge case 139 is moved up and down by the fluid pressure cylinder 133, a slide bush 14 is provided at a portion where the bearing case 141 is moved up and down guided by the guide bars 135, 135.
3,143 are provided.

The fluid pressure cylinder 133 is provided with a float piston 145 in the lower large diameter part, and a second float piston 145 in the small diameter part.
A piston 147 is provided, and fluid pressure inlet and outlet ports are provided at three locations 149, 151, and 153.

As is clear from FIG. 4, inside the gauge case 139, there is provided a gauge 157 on the left and right sides that can freely move towards and away from the top dies 113, 113 via ball bearings 155. is provided.

Further, a pinion gear 165 that is supported by the upper and lower bearings 161, 163 of the bearing case 141 and rotates is engaged with the rack 159.

Next, as is apparent from FIGS. 7 and 8, the material abutment gage device 129 described above has a centerline 10
A plurality of locations are provided on the machine frame 103 at position 5.

Each gauge device 129 is bent at a universal joint 167 below a lower bearing 163, passes through a telescoping spline joint 169 (also referred to as a telescopic joint), and then passes through a lower universal joint 71. It is connected to the shaft of the stage reduction pulley 173.

As is clear from FIG. 10, one rotating shaft 175
Then, the gauges 157 at a plurality of locations are simultaneously moved by the same amount by the bevel gear set 177, and positioning from the bending line edge 127 can be performed.

Further, it is not necessary to explain that it is easy to position the gauge 157 on the symmetrical side.

In the gauge case 139 described above, the gauge 157 is connected to the plate material 115 by the multi-stage fluid pressure cylinder 133.
In addition to the position that occupies the height of the pass line, the position that is below the pass line, and the position that is higher than the pass line.

The above-mentioned highest position corresponds to the case where the protruding portion of the plate material 115 occupies a high position.

Further, as shown in FIGS. 7 and 10, a belt conveyor 179 is provided on a part of the machine frame 103 along with the material abutting gauge device 129.
81 are provided in multiple rows.

These pulleys 181 are simultaneously synchronized by a tuning belt 191 such as a chain, which is passed between a sprocket 187 provided on a horizontal shaft 185 driven by an electric motor 183 shown in FIG. 10, and a sprocket 189 provided on one side of the pulley 181. rotationally driven in the direction.

Note that, as is clear from FIG. 7, the upper surface of the belt conveyor 179 is
It is provided on the same level as the pass line 193, which coincides with the upper surface of.

In the above-mentioned conventional apparatus, the tip of the carried-in plate material 115 shown in FIG. 6 is bent by raising the bend beam 121 at the front stage, and then the ram 111 is raised to move the semi-finished product onto the bottom die 107 at the rear stage on the right side. It is necessary to move it to the right by a conveying roller provided outside the bottom die 107 in the previous stage (see Fig. 4), so that its tip reaches the belt conveyor 179 below the gauge device 129 shown in Fig. 7. It was hot.

In other words, if the dimension in the feeding direction of a semi-finished product with only its tip bent is not long enough, there is a problem in that it cannot be automatically moved for subsequent folding operations.

[Purpose of the invention and its summary] The purpose of the invention was to solve the above-mentioned disadvantages of the conventional device.The purpose of the invention was to solve the above-mentioned disadvantages of the conventional device. The roller is biased and provided with a drive device that rotates the material feeding roller at least in the forward direction.

[Embodiment of the invention] An embodiment of the invention will be described in detail based on FIGS. 1, 2, 3, and 4.

Figure 1 shows the bottom dies 3, 3 and bend beams 5, 5, which are installed in the machine frame 1 of the opposing type sheet material bending machine shown in Figure 5, and the four pulleys 7 shown by two-dot chain lines. Belt conveyor 9,
9 is shown.

Further, roller conveyors 13, 13 driven by a chain 11 are provided outside the bottom die 3 on the carry-in side of the plate material and on the carry-out side of the semi-finished product obtained by folding the front and rear ends of the plate material.

In the apparatus of this embodiment, a groove 15 is provided in the upper surface of the bottom die 3 in the center thereof, and a feed roller 1 is supported at both ends by a pair of bearing blocks 17, 17 in this groove.
9 and 19 are provided so as to be biased upward by the ammunition 21.

A vertical keyway 23 is provided on one side of the bearing block 17.
(See FIG. 3) is provided so that the bearing block 17 can be raised and lowered by being guided by the key bolt 25.

Furthermore, two bearing brackets 27, 27 are provided on one side of the bottom die 3 (lower side in Figure 1) and support the sprocket shaft 29, and at one end thereof a coupling 31 (Oldham joint) with criss-cross grooves is provided. ) and a driven sprocket 33 on the other side.

Between the bottom die 3 and the roller conveyor 13,
A bracket 35 protruding from the bottom die 3
is provided and an idler sprocket 37 is attached. A circulation chain 43 runs around a drive sprocket 41 provided on the shaft 39 of the roller conveyor 13, the idler sprocket 37, and the driven sprocket 33.

The operation of the apparatus of this embodiment will be explained with reference to FIG. 4. As described above, the material feeding roller 19 provided on the bottom die 3 is urged upward by the bullet 21, so that the workpiece material is Unless pressed against the bottom die 3 by the top data 113 (see FIG. 6), it protrudes to the pass line 45.

Therefore, the roller conveyor 13 can carry it from the left side in FIG. 4 to above the bend beam 5.

The workpiece plate material is passed through the top die 113 and the bottom die 3.
The bend beam 5 pressed and fixed upward is raised to perform the bending process, and when the bend beam 5 is lowered and the top die 113 is raised, the workpiece has returned to the height of the pass line 45.

Therefore, the semi-finished product with its tip bent is at least transferred to the roller conveyor 1 in the bottom die 19.
3 and passes over the bend beam 5 to reach the belt conveyor 179 provided at the center line 105 of the opposing bending machine 101.

[Effects of the invention] As can be understood from the above description of the embodiments, the present invention, in short, presses the plate material against the bottom die using a ram provided vertically movably above the bottom die that supports the plate material. A sheet material bending machine comprising a top die and a vertically movable bend beam that bends the edge of the sheet material upward when the sheet material is pressed and fixed to the bottom die by the top die, A material feeding roller 19 connected to a rotary drive device is rotatably provided in a groove 15 formed in the bottom die 3, and this material feeding roller 19 is provided so as to freely protrude from the upper surface of the bottom die 3 and is biased upward. It is set up as follows.

As is clear from the above structure, in the present invention, the material feeding roller 19 is provided in the groove 15 provided in the bottom die 3, and this material feeding roller 19 is connected to the bottom die 1.
Since the ram is provided so that it can freely protrude from the upper surface of 3 and is biased upward, the ram rises after the sheet material is bent and the pressing fixation by the top die is released, and at the same time, the sheet material is moved by the material feeding roller 19. The material can be fed while being slightly pushed up from the top surface of the bottom die 3.

Therefore, even if the plate material is short, it can be easily transported to the next process and the material can be transported efficiently and quickly. In addition, as the plate material is pushed up by the material feeding roller 19,
This prevents scratches from occurring on the top surface of the bottom die 3.

Although the above embodiment has been described with respect to a facing type bending machine, it is obvious that it can also be used in a semi-finished product accumulation device in place of a subsequent folding machine, and the technical idea of the present invention can also be used in other ways. It is also clear that design changes can be easily made without deviation.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the area around the bottom die of the embodiment of the present invention, Fig. 2 is a plan view of the drive section of the feed roller in the bottom die, Fig. 3 is an elevational view of Fig.
The figure is an explanatory view of the operation of this embodiment, Figure 5 is a side view of a conventional opposed plate material bending machine, Figure 6 is a front view of the same Figure 5, and Figure 7 is the same as that of Figure 5. Fig. 8 is a right side view of Fig. 7, Fig. 9 is a sectional view taken along the - sectional arrow of Fig. 8, Fig. 10 8 is a side view showing the abutment gauges at a plurality of locations expanded from FIG. 8, and the material conveying belt conveyor also shown at a plurality of locations. Explanation of the symbols representing the main parts of the drawing, 3... Bottom die, 5... Bend beam, 9... Belt conveyor, 19... Material feeding roller, 21... Bullet machine, 31
...Katsupring.

Claims (1)

[Scope of utility model registration request] A ram that is movable up and down above the bottom die that supports the plate material is provided with a top die that presses the plate material against the bottom die, and when the plate material is pressed and fixed to the bottom die by the top die, the ram is movable up and down. A groove 15 formed in a bottom die 3 in a plate bending machine equipped with a bend beam that can be vertically movable to bend an end edge upward.
A material feeding roller 19 connected to a rotary drive device is rotatably provided inside the bottom die 3, and this material feeding roller 19 is provided so as to freely protrude from the upper surface of the bottom die 3 and is biased upward. A sheet material bending machine.