JPH0618673Y2 - Material feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a material supply device for supplying a long material such as a wire or a strip.

(Prior Art) For example, as shown in FIG. 5, the material supply device is combined with a processing machine 1 such as a forging machine, and a feeding roller 2 draws a long material 3 from a drum 4 or the like by a predetermined amount and the processing machine 1 is processed. 1
Some of them are supplied inside (Japanese Utility Model Application Laid-Open No. 58-33143 and Japanese Patent Application Laid-Open No. 60-127030 describe a material supply device combined with a forging machine).

In this type of material supply device, for example, as shown in FIG. 6, a material supply drum 5 around which a long material 3 is wound is rotatably supported by a bearing 6, and a feed roller 2 supplies the material supply drum 5. There is a device in which the long material 3 wound from 5 is drawn out and supplied into the processing machine 1.

However, in this structure, since the material supply drum 5 is rotated only by the pulling force of the long material 3 by the feed roller 2, the long material 3 gradually winds around the material supply drum 5 and becomes strongly entangled. was there.

Therefore, various proposals have been made in which the feed roller pulls out the long material from the material supply drum and supplies it to the processing machine, and at the same time, the material supply drum is rotated to forcibly send out the long material.

For example, as shown in FIG. 7, a drive means 7 such as a motor is connected to the material supply drum 5 so that the material supply drum 5 can be rotated, and the material supply drum 5 is provided between the feed roller 2 and the material supply drum 5.
A measuring roller 8 for detecting the feeding amount of the long material 3 from the machine is provided.
There is a system in which the measuring roller 8 detects the amount to be drawn to supply the material, and the material supply drum 5 is appropriately rotated accordingly to forcibly send out the long material 3.

Further, as shown in FIG. 8, a drive means 7 such as a motor is connected to the material supply drum 5 so that the material can be rotated, and the feed roller 2 can be operated in accordance with the amount of the long material 3 supplied to the processing machine 1. The rotation speed of the material supply drum 5 is set in advance in the control device 9 so that the length material 3 can be sent out, and the drive means 7 is controlled by the rotation speed set by the control device 9 during processing to control the material supply drum. There is one in which the long material 3 is forcibly sent out by rotating the material 5.

(Problems to be Solved by the Invention) However, the above-described conventional material supply device has the following problems.

In the case of rotating the material supply drum 5 based on the detection of the measuring roller 8 to supply the long material 3, the feeding roller is actually fed due to a slip between the roller of the measuring roller 8 and the long material 3. The material supply drum 5 rotates and the amount of forcibly feeding the long material 3 becomes smaller than the amount of 2 at which the long material 3 is pulled out.
However, there is a problem in that the material is gradually wound around the material supply drum 5 and a feed failure occurs.

Further, in the case where the material supply drum 5 is rotated at a rotation speed preset by the control device 9 and the long material 3 is fed out,
When the feed roller 2 actually supplies the long material 3 to the processing machine and the material supply drum 5 rotates and forcibly supplies the material, an error may easily occur, and a difference may occur. The long material 3 is the material supply drum 5
There is a problem in that the long material 3 is tightly wound, and conversely, when it is fed out in a large amount, it is slackened and caught, which causes a feeding failure of the long material 3.

Then, when the feeding failure of the long material 3 occurs,
Problems such as defective products being molded and damage to the processing machine occurred.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a material supply device capable of accurately and reliably supplying a long material in a predetermined amount.

(Means for Solving the Problems) A material supply device of the present invention is a material supply drum rotatably provided by a driving means for feeding a long material wound around the material supply drum, the material supply drum, and the length. Based on the deflection amount detected by the detection unit, which is provided between the feed roller that supplies the length material into the processing machine, and detects the deflection amount of the long material fed from the material supply drum. And a control unit that controls the drive unit to adjust the rotation speed of the material supply drum.

(Operation) According to this structure, the feed roller draws out the long material wound around the material supply drum to supply it to the processing machine and the amount by which the material supply drum is rotated by the driving means to send out the long material. And the control unit adjusts the rotation speed of the material supply drum so as to correct the amount of deflection, and the amount of pull-out of the long material by the feed roller The amount delivered by rotation of the material supply drum can be matched.

(Example) Next, the Example of this invention is described based on drawing. 1 is a plan view of the material supply apparatus of this embodiment, and FIG. 2 is a side view of the material supply apparatus shown in FIG. 1. In this embodiment, a forging machine is used as a processing machine, and the inside of the forging machine is used. A material supply device for supplying a long material will be described.

Reference numeral 10 denotes a material supply drum that feeds out a linear long material 11 that is wound horizontally, and is provided with a drive means 12 including a motor connected thereto so that the rotation speed can be freely controlled.

Reference numeral 13 denotes a feed roller, which is attached to the processing machine 14 side and is composed of a pair of rollers. The rotation roller 13 is rotated by a driving means (not shown) so as to sandwich the long material 11 and pull it out from the material supply drum 10 so that the processing machine 14 It is what is supplied inside.

Between the material supply drum 10 and the feed roller 13, a detection unit 15 for detecting the amount of deflection of the long material 11 sent from the material supply drum 10, and a material based on the amount of deflection detected by the detection unit 15. Control unit 16 that controls the rotation speed of the supply drum 10
And are provided.

The detection unit 15 arranges a pair of rollers 17 in a horizontal direction and rotatably supports the plate 18, and fixes a shaft 19 to the plate 18 in the horizontal direction, and the shaft 19 is provided on a support plate 20. The guide 21 is slidably supported in the horizontal direction. Then, the long material 11 is provided between the rollers 17.
By passing it through, the shaft 19 moves in the horizontal direction according to the slack of the long material 11. That is, the long material 11 has a certain degree of rigidity, and the feed roller 13 has the long material 11
If the material supply drum 10 feeds the long material 11 less than the amount of pulling out the material, A in FIG. 1 (dashed line)
As shown in Fig. 1, since the long material 11 is strongly pulled, the shaft 19 moves in the X direction in the drawing in response to this pulling, and conversely, when the material feeding drum 10 sends a large amount, As shown by B (two-dot chain line), the long material 11 sags, and the shaft 19 moves in the Y direction in the figure in accordance with the sag.

The control unit 16 includes a low speed dog 22, a medium speed dog 23, and a high speed dog which are attached to the shaft 19 of the detection unit 15 at predetermined intervals.
24, a low-speed limit switch 25, a medium-speed limit switch 26, a high-speed limit switch 27 provided on the upper surface of the support plate 20 supporting the guide 21, and each limit switch 25, 26, 27 When the switch part of each limit switch 25, 26, 27 is pressed by the dogs 22, 23, 24 to turn it on, the signal is transmitted to the control device and turned on. Driving means for the material supply drum 10 so that the speed corresponds to the limit switch
It controls 12 to rotate the material supply drum 10, and the speed is maintained after one limit switch is turned on until another limit switch is turned on. In addition,
The rotation speed of the material supply drum 10 is set to a medium speed in advance so as to substantially match the amount of the long material 11 drawn out by the feed roller 13.

It should be noted that the limit switches may be only for high speed and for low speed, and in this case, when the limit switch is not turned on, the control device may be controlled to rotate the material supply drum 10 at a medium speed at all times. .

The operation of the material supply device having the above configuration will be described.

The feed roller 13 is driven so that a predetermined amount of long material 11 can be machined.
Medium speed limit switch 26 is ON when supplied to 14
Then, the material supply drum 10 rotates at a medium speed and the wound long material 11 is delivered.

And, for example, a feed roller to feed the processing machine 14.
When the material supply drum 10 rotates and supplies less than the amount of the long material 11 drawn out by the device 13, the long material 11 between the feed roller 13 and the material supply drum 10 is pulled and the material shown in FIG. In the state of A, the shaft 19 of the detection unit 15 is moved to the X of FIG.
In the same direction, and the control unit 16 high-speed dog
24 turns on the high speed limit switch 27 to change the rotation speed of the material supply drum 10 to high speed. As a result, the amount of the long material 11 sent from the material supply drum 10 is increased, and the tension is relaxed. Then, the rotation speed of the material supply drum 10 is returned to the original medium speed state again.

On the contrary, when the material supply drum 10 rotates and feeds more than the amount of the long material 11 drawn out by the feed roller 13, the long material 11 sags to be in the state of B in FIG. The shaft 19 of the detection unit 15 is moved in the Y direction in FIG. 1, and the low speed dog 22 of the control unit 16 accordingly turns on the low speed limit switch 25 to change the rotation speed of the material supply drum 10 to a low speed. To do. As a result, the amount of the long material 11 delivered by the material supply drum 10 is reduced, and the slack is corrected. Then, the rotation speed of the material supply drum 10 is returned to the original medium speed state again.

In this way, the amount of the long material 11 pulled out by the feed roller 13 and the amount of the material supply drum 10 rotated and fed out are different from each other, so that the tension or the slack (the tension and the slack are collectively referred to as a deflection amount) is detected The part 15 detects, and the control part 16 repeatedly controls the rotation of the material supply drum 10 so as to correct the tension or slack, so that the amount of the long material 11 pulled out by the feed roller 13 and the material supply drum 10 are The amount sent out is almost matched,
The long material 11 is properly supplied into the processing machine 14.

Next, another embodiment of the material supply apparatus of the present invention will be described with reference to FIGS. 3 and 4. Note that FIG. 3 is a plan view of the detection unit 28 and the control unit 29, which are the main parts of the material supply device, and FIG. 4 is a side view thereof.

The detection unit 28 has the same configuration as that of the above-described embodiment,
A pair of rollers 17 rotatably supported by the plate 18 and a plate 18
And a guide 21 provided on the support plate 20 and slidably supporting the shaft 19.

The control unit 29 includes a variable limit switch 30 provided on the support plate 20 and a variable limit switch 30.
Is connected to the control device 31. The variable limit switch 30 includes a slide shaft 32 attached to the shaft 19 of the detection unit 28 and a slide shaft 32.
The main body 33 is penetrated by the main body 33, and the main body 33 detects the amount of movement of the slide shaft 32 to detect the position of the shaft 19 of the detection unit 28 and convert the position into an electric signal. Further, in the control device 31, the feed roller 13 is previously set.
The shaft 19 of the detection unit 28 that is moved by bending or pulling of the long material 11 between the material and the material supply drum 10.
And the number of revolutions of the material supply drum 10 for correcting the slack or tension at that time are set.

Then, in the material supply device having this configuration, the signal of the position of the shaft 19 converted by the variable limit switch 30 is transmitted to the control device 31, and the position of the shaft 19 and the rotational speed of the material supply drum 10 which are set in advance are set. The drive means for the controller 31 to drive the material supply drum 10 based on the relationship
By adjusting 12 to continuously change the number of revolutions of the material supply drum 10, the tension or slack is corrected.

In this way, in order to correct the tension or slack of the long material 11 between the feed roller 13 and the material supply drum 10, the rotation speed of the material supply drum 10 is continuously changed. The amount of drawing by the feed roller 13 and the amount of feeding by the rotation of the material supply drum 10 can be accurately matched.

As described in detail above, in the present embodiment, the linear long material 11 is described as being supplied to the processing machine 14,
The present invention is not limited to this, and can be applied to a device that supplies a strip-shaped long material to a press die or the like.

(Effects of the Invention) As described in detail above, according to the present invention, the length of the long material between the material supply drum whose rotation speed can be controlled by the driving means and the feed roller for supplying the long material into the processing machine is improved. The amount of deflection is detected by the detector, and the control unit adjusts the rotation speed of the material supply drum to correct this amount of deflection. It is possible to match the amount of rotation by sending.

Therefore, it is possible to reliably prevent defective feeding of the long material, and prevent defective products and damage to the processing machine.

[Brief description of drawings]

FIG. 1 is a plan view showing a material feeding device according to an embodiment of the present invention, FIG. 2 is a side view of the material feeding device shown in FIG. 1, and FIG. 3 is another embodiment of the present invention. FIG. 4 is a plan view showing a detection unit and a control unit of the material supply device of FIG. 4, FIG. 4 is a side view of the detection unit and the control unit of FIG. 3, and FIG. FIG. 6 and FIG. 6 to FIG. 8 are schematic views showing the structure of the material supply drum of the conventional material supply device. 10 …… Material supply drum 11 …… Long material 13 …… Feed roller 14 …… Processing machine 15 …… Detector 16 …… Control unit

Claims (1)

[Scope of utility model registration request] 1. A material supply drum rotatably provided by a driving means for feeding a long material wound around the material supply drum, and a feed roller for supplying the long material into a processing machine. A detector provided between the detectors for detecting the amount of deflection of the long material fed from the material supply drum, and the drive means controlled based on the amount of deflection detected by the detector to rotate the material supply drum. A material supply device comprising: a control unit that adjusts a speed.