JPH045216Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a feeding device for a blanking line.

2. Description of the Related Art Examples of feeding devices installed in a blanking line include those shown in FIGS. 4 and 5. This feeding device 1 uses a feed roll 2 that is intermittently driven by a stepping motor or the like to unwind a thin steel plate 3 wound into a coil shape, make it into a straight line, and transfer the thin steel plate 3 to a measuring roll 4. The length of the shearing blade 5 is measured, and when the feed amount reaches a predetermined length, the intermittent feeding stops.
Or a processing blade such as a trimming die is activated,
Cutting, punching, etc. are now being performed.

However, when the coiled thin steel plate 3 is sent one after another and approaches the coil end, the coil end of the thin steel plate 3 first comes off from the measuring roll 4 and then from the feed roll 2, and the coil end of the thin steel sheet 3 comes off from the measuring roll 4. Since length measurement is no longer possible (see FIG. 5) and feeding is also no longer possible, the auxiliary feed roll 6 is used to feed the thin steel plate 3 from now on. However, since the auxiliary feed roll 6 does not have a measuring function, subsequent length measurements must be carried out manually, resulting in poor dimensional accuracy and are often discarded as scrap material.

Problems to be Solved by the Invention Therefore, in the conventional feeding device 1 described above, when the coil end of the thin steel plate 3 comes off the measuring roll and the length cannot be measured, the remaining length l is There was a problem that the material ended up as waste material.

In addition, as a feeding device having a means for shortening the length of the coil end that becomes waste material, JP-A-56-
There is a device described in Publication No. 136238.

In this feeding device, a measuring wheel that can be rotated is installed near the processing blade downstream of the feed roll, the material is inserted between the measuring wheel and the adjusting wheel, and after the coil end is removed from the feed roll, the measuring wheel The measuring wheel is driven to transfer and measure the material using this measuring wheel.However, since the position of the measuring wheel is fixed, if this measuring wheel is installed in a position close to the processing blade, As a feeding device such as a shearing device that cuts the material diagonally, it is necessary to swing the processing blade to change the setting at a predetermined angle and then cut the material diagonally.
The measuring wheel and the processing blade may interfere, making it difficult to cut at the desired angle.Also, if the measuring wheel and processing blade are installed at a distance that does not interfere with the processing blade, it may be impossible to measure the length when cutting at right angles. The problem was that the length of the pipes became longer and the amount of waste material increased.

The present invention was devised in view of the above-mentioned problems, and aims to provide a feeding device that can effectively use up to the end of the coil, reduce the amount of waste material, and improve the material yield.

Means for Solving the Problems As a means for solving the above problems, in this invention, a feed roll is used in a feeding device of a blanking line that intermittently feeds a long material in the direction of a processing blade in steps of a specified size. The present invention is characterized in that an auxiliary feed roll, which has a measuring function and can be driven to rotate intermittently, is provided downstream of the processing blade and upstream of the processing blade so as to be movable in the forward and backward directions of the material feed.

Effect With the above configuration, if the end of the material comes off the measuring roll while cutting the material at right angles, the auxiliary feed roll is moved forward from the standby position to the furthest position and brought close to the processing blade. Measure the length and feed at the position. In addition, if the end of the material comes off the measuring roll while cutting the material diagonally, move the auxiliary feed roll forward from the standby position and measure and measure the length at a position close to the processing blade without interfering with it. Have them send the item. Then, the material is fed by a specified size, cut into specified dimensions, and the material is used effectively to the end.

Embodiment An embodiment in which this invention is applied to a feeding device for feeding a thin steel plate to a shearing device will be described below with reference to FIGS. 1 to 3.

The feeding device 11 includes a pair of upper and lower feed rolls 13a, 13b that are driven intermittently so as to sandwich and pull the thin steel plate 12;
A pair of upper and lower measuring rolls 14 are arranged upstream of the measuring rolls 13b and measure the feed amount of the thin steel plate 12.
a, 14b and the feed rolls 13a, 13
A pair of upper and lower auxiliary feed rolls 15a and 15b are provided on the downstream side of b.

The auxiliary feed rolls 15a and 15b are attached to a movable base 17 that is installed on a base frame 16 so as to be movable in the front and back direction in the feeding direction of the thin steel plate. A feed screw shaft 20 whose distal end is screwed into a female screw piece 18 installed at the bottom, whose proximal end is rotatably supported by the base frame 16, is provided horizontally, and is rotationally driven by a motor 19. It is designed to be driven linearly by the rotation of.

Further, the lower auxiliary feed roll 15b of the auxiliary feed rolls 15a and 15b is connected to the movable base 17.
The upper auxiliary feed roll 15a is rotatably attached to a mounting plate 21 that is supported at the center of the upper part of the movable base 17 so as to be swingable in the vertical direction. is driven in the vertical direction by the cylinder 22.

Further, the upper auxiliary feed roll 15a is rotationally driven by a stepping motor 23 provided on the mounting plate 21, and pulls the thin steel plate 12 between it and the lower auxiliary feed roll 15b. Instead, the thin steel plate 12 can be fed intermittently in the direction of the shearing blade 24.

The above-described feeding device 11 uses feed rolls 13a and 13b to pull a thin steel plate 12 wound into a coil shape, feed it in the direction of the shearing blade 24, measure the length fed by the measuring rolls 14a and 14b, and measure the length fed by the measuring rolls 14a and 14b. When the feed rolls 13a and 13b are fed by the dimension a, the feed rolls 13a and 13b are stopped intermittently, and during this time the shearing blade 24 descends, and the thin steel plate 12 is cut into a prescribed dimension a determined for each component.

Then, the shearing work progressed, and the thin steel plate 1
When the second coil end 12a is sent to the position of the feeding device 11, the coil end 12a is detected by the phototube 25 in front of the measuring rolls 14a, 14b of the feeding device 11, and is cut into a specified size. After that, pause.

At this time, the thin steel plate 12 is being cut at right angles to the length direction, and the shearing blade 24 is also cut at right angles to the length direction of the thin steel plate 12 (indicated by a solid line in FIG. 1). If it is set, the motor 19 is started and the feed screw shaft 20 is rotated to move the movable base 17 forward from the standby position (the backward limit position near the feed rolls 13a, 13b), and the movable base 17 is attached to the movable base 17. The auxiliary feed rolls 15a, 15b are set in a position close to the shearing blade 24, and thereafter, the auxiliary feed rolls 15a, 15b are intermittently driven by the stepping motor 23 to feed the thin steel sheet 12.
At the same time, the auxiliary feed roll 15
The feed amount is measured by a and 15b, and the thin steel plate 1
The amount of waste material generated is minimized by removing material up to the coil end 12a of No. 2 without waste (see Fig. 2).

Further, the thin steel plate 12 is cut diagonally with respect to the length direction, and the shearing blade 24 is also cut at a predetermined angle (indicated by a two-dot chain line in FIG. 1) with respect to the length direction of the thin steel plate 12. If the camera is set at an angle (the angle shown),
The movable table 17 is moved forward from the standby position to the extent that the auxiliary feed rolls 15a and 15b do not interfere with the shearing blade 24 set diagonally, and the auxiliary feed roll 15 is then set.
The thin steel plate 12 is fed by means a and 15b, and the amount of feed is measured to perform cutting, thereby minimizing the amount of waste material generated (see Fig. 3).

The distance that the movable base 17 to which the auxiliary feed rolls 15a and 15b are attached is advanced is set in advance according to the setting angle of the shearing blade, so that it is automatically advanced when cutting the coil end. Good too.

Further, in the above embodiment, the feed rolls 13a, 13b and the measuring roll 14
auxiliary feed roll 15 with fixed type a and 14b
a and 15b, but the feed rolls 13a and 13b and the measuring roll 1
4a, 14b can also be made movable.

Effects of the invention As explained above, the blanking line feeding device of this invention has an auxiliary feed roll equipped with a measuring function and capable of being driven intermittently on the downstream side of the feed roll and upstream of the machining blade. Since it is movable in the direction, even if the processing blade is installed so that the angle can be changed, it is possible to always measure the feed and feed amount of the material at a position close to the processing blade, making it impossible to measure the length of the end of the material. The amount of waste material generated can be minimized by shortening the length of the section.

[Brief explanation of drawings]

Figures 1 to 3 show one embodiment of this invention. Figure 1 is a perspective view showing the main part of the blanking line where the feeding device is installed, and Figure 2 is a perspective view showing the main part of the blanking line where the shearing blade is installed at right angles. FIG. 3 is an explanatory diagram showing a case where the shearing blade is set diagonally. FIG. 4 is an explanatory diagram showing a blanking line equipped with a conventional feeding device. FIG. 5 is an explanatory diagram showing a state in which the conventional feeding device is unable to measure length. 11... Feeding device, 12... Thin steel plate, 12a
... Coil end, 13a, 13b ... Feed roll, 14a, 14b ... Measuring roll, 15a, 15b ... Auxiliary feed roll, 17...
...Movable base, 23...Stepping motor, 24...
...shearing blade.

Claims (1)

[Scope of utility model registration request] In a blanking line feeding device that intermittently feeds a long material in the direction of the processing blade in predetermined size increments, on the downstream side of the feed roll and upstream of the processing blade,
A feed device for a blanking line, characterized in that an auxiliary feed roll having a measuring function and capable of intermittent rotation is provided so as to be movable in the forward and backward direction of material feed.