JPH0357289Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a feeding device for coil material in the form of thin strips, and particularly to a feeding device for coil material suitable for use in feeding coil material to press machines. Regarding improvements.

[Background technology and its problems]

(Background Art) In press machines, metal surface treatment machines, etc., in order to automatically supply workpieces, an uncoiler is equipped with a coil material in which a thin strip is wound, so that the uncoiler automatically supplies the workpiece. Generally, to automatically feed coil material, adjusting the dancer roll using gravity is sufficient in the case of highly flexible materials such as foil metal, plastic film, and wire rods, but for example, in the case of a press machine, Since the material has strong rigidity, a so-called loop method is used that takes advantage of this rigidity.

As shown in FIG. 7, the conventional loop-type supply device for coil material has a device 2 and an uncoiler 1 disposed vertically, and prevents bending of the coil material 3 including a feed roller 6 that feeds the coil material 3 from the uncoiler 1. A leveler 5 for forcing, a loop guide 61 for guiding the coil material 3, a reversing guide 40 for changing the direction of the coil material 3 fed from the uncoiler 1 via the loop guide 61, and a reversing guide 40 for changing the direction of the coil material 3 fed from the uncoiler 1 via the loop guide 61; A roll feeder 15 is provided for supplying the coil material 3 to the equipment 2 in use. The coil material 3 is placed between the feed roller 6 and the roll feeder 15 with the width of the loop area R.
The structure is such that stable and smooth supply from the uncoiler 1 to the equipment 2 in use can be achieved while ensuring the amount of oil in stock. Here, the loop area R is the type of equipment used,
This is determined based on the operating mode, the rigidity of the coil material 3, etc., but the wider it is, the more sufficient the amount of the coil material can be secured. However, if the width is too wide, the tip of the coil material 3 reversed by the reversing guide 40 will not necessarily run to the roll feeder 15 reliably. This makes it easy to insert the coil material 3 into the roll feeder 15. In addition, a lower threading guide 2 is provided facing the loop guide 61 so that the coil material 3 from the leveler 5 is reliably guided to the loop region R.
1 is provided. Therefore, in normal operation, the coil material 3 can be automatically and stably supplied from the uncoiler 1 to the equipment 2 using the effect of increasing and decreasing the amount of coil material 3 held in the loop region R.

(Problems) However, in the conventional coil material supply device described above, the following problems have arisen as the types of coil materials 3 applicable to the equipment 2 have expanded.

That is, the loop guide 6 for the leveler 5
1. Between this and the reversing guide 40, the reversing guide 40
The relative positional relationship between the upper threading guide 31 and the upper threading guide 31 is determined in accordance with the characteristics such as rigidity of the coil material 3 that is most likely to be processed by the device 2 in use. A problem arises when using .

For example, when using a coil material 3 whose rigidity is less than that of the reference coil material 3, the coil material 3 sent out from the leveler 5 during the threading process is placed between the loop guide 61 and the lower threading guide 21. Since there is an inconvenience that the coil material 3 bends in the space S ₁ or winds itself in the loop region R, the threading process requires excessive labor on the operator and not only cannot thread the coil material 3 automatically. This also led to the situation where the range could no longer be used as a product.
Furthermore, since the radius of curvature of the reference loop is too large during normal operation, the coil material 3 causes a fluttering phenomenon within the loop region R, making stable operation difficult and sometimes resulting in an emergency stop. This means that if the configuration is optimal for normal operation based on the coil material 3 with the highest rigidity, it will not be possible to perform threading smoothly or automatically, while on the other hand, if the configuration is optimal for threading based on the coil material 3 with the lowest rigidity. As a result, normal operation was hindered due to the flapping phenomenon. Moreover, these problems also have the disadvantage of significantly limiting the range of types of coil material 3 that can be applied.

In particular, nothing has been developed that can automatically perform threading without affecting the characteristics of normal operation, and the development of one has been desired.

(Purpose of the invention) An object of the invention is to provide an excellent coil material supply device that enables automatic threading while guaranteeing suitability for normal operation.

[Means and actions for solving problems]

(Means) The present invention is configured so that the upper threading guide, loop guide, etc. can be moved and controlled to perform rapid threading, and after that, a loop can be formed in accordance with the rigidity of the coil material used, which is optimal for normal operation. It is something.

Specifically, in a coil material supply device for supplying a coil material sent from an uncoiler to a device in which the direction is changed by a reversing guide to form a loop, an upper threading guide movable in the direction of the reversing guide is provided. reciprocating means for reciprocating movement; pivot means for rotatably supporting the loop guide disposed between the uncoiler and the reversing guide at one end side; The loop guide includes an attitude adjusting means for rotating to adjust the attitude with respect to the reversing guide, and a setting device for setting the characteristics of the coil material to be used, and the loop guide is adapted to correspond to the characteristics set by the setting device. and a posture control device for operating the reciprocating means to move the upper sledding guide to the forward limit on the reversing guide side on the condition that the loop guide is at the lower limit, and the coil material After threading, a sequence circuit is provided that operates the attitude control device to bring the loop guide into an attitude corresponding to a preset characteristic of the coil material, and the sequence circuit automatically threads the coil material and maintains the position of the coil in normal operation. The object is to achieve the above object by configuring the structure so that an optimum loop of material can be formed.

(Function) Since this invention has the above-mentioned configuration, if the coil material pulled out from the uncoiler is clamped to the feed roller of the leveler, the characteristics of the coil material, such as a thick plate, are set, and the start switch is operated, Provided that the loop guide is at the lower limit, the upper threading guide can be automatically moved in the reversing guide direction using a reciprocating means to establish a space _S2 suitable for threading, so that the tip of the coil material can be The coil material can be reliably passed through the roll feeder without self-winding, and automatic threading is possible. In addition, after threading is completed, the attitude control device automatically operates the attitude adjustment means to adjust the inclination attitude of the loop guide to form an optimal loop according to the characteristics of the coil material such as a preset thick plate. Control allows stable normal operation and increases the productivity of the equipment used.

〔Example〕

An embodiment of the coil material supply device according to the present invention will be described with reference to the drawings. The feeding device of this embodiment is shown in Figs.
As shown in the figure, the uncoiler 1, the leveler 5, the loop guide means 60, the reversing guide 40, the roll feeder 15, and the equipment 2 are arranged in this order in the clockwise direction, and the upper part of the vertical reversing guide 40 and the upper threading means 30 are arranged in this order. Threading guide 31
A loop guide 61 of a loop guide means 60 is disposed below the upper threading guide 31 between the leveler 5 and the reversing guide 40, and a lower threading guide 21 of the lower threading means 20 is disposed below the upper threading guide 31. are vertically opposed to the loop guide 61.

The leveler 5 is a driving means (not shown), and is formed of a feed roller 6 rotated at a constant speed and a plurality of two-stage rollers 7, 7... arranged at different levels in the arrangement direction, and draws out the coil material 3 from the uncoiler 1. The bent portion is corrected and then supplied to the loop guide means 60.

The loop guide means 60 includes a loop guide 61 having an initial stage roller 62 and a plurality of rollers 63, 63, . Attitude adjustment means 70 for tilting and rotating the loop guide 61 about the pivot means 65, and an attitude control device 8 for driving and controlling the attitude adjustment means 70.
0 (see FIG. 4), and the coil material 3 is guided by the upper surface portion of the loop guide 61 and sent to the reversing guide 40. The attitude adjustment means 70 is rotatably connected to the machine frame 79 by a rotary shaft 7.
8, a screw member 72 attached to this motor 71, and this screw member 7
2, one side is the shaft 76 and the loop guide 61
A nut member 75 rotatably supports a pair of link members 73, 73, the other of which is rotatably supported at a fixed end by a shaft 77, and the motor 71 is formed of a loop guide. Further, the motor 71 is provided with an angle detector 74 for detecting the rotation angle of the motor 71 which is proportional to the inclination angle of the loop guide 61. Therefore, when the motor 71 is rotated clockwise to move the nut member 75 toward the distal end of the screw member 72, the link members 73, 73 spread around the nut member 75, so that the loop guide 61 moves as shown in the figure around the pivot means 65. is tilted clockwise.

In this case, the motor 71 rotates around the rotating shaft 78 due to the wide angle of the pair of link members 73, 73. By the way, in this attitude adjustment means 70, the more the loop guide 61 is inclined, the more the loop guide 61 must move to the right in the figure, and the smooth attitude adjustment is possible unless the first stage roller 62 moves upward in the figure. I can't. For this purpose, the pivot means 65 includes a first link bar 68 rotatably attached to the machine frame 66 about a shaft 67 and a first link bar 68 rotatably attached to the loop guide 61 about a shaft 94, as shown in FIGS. 2 and 3. A second link bar 69 is rotatably supported on the shaft 64 of the first stage roller 62. Therefore, the loop guide 61 connects to the shaft 6 through the link bars 69 and 68.
7, and in this case, the first stage roller 62 moves upward in proportion. In other words, even if the loop guide 61 is tilted, the first stage roller 6
Since the position of the loop material 2 does not fall accordingly, the loop material 3 from the leveler 5 is smoothly guided to the loop guide 61. The reversing guide 40 fixed vertically to the column 42 is for horizontally reversing the moving direction of the coil material 3 that has been fed out from the uncoiler 1 and has passed through the leveler 5 and the loop guide means 60. Curved portions 41 for guiding the coil material are formed at the upper and lower ends of the coil material 40, and the coil material 3 inverted in the horizontal direction forms a loop portion 3A and is supplied to the device 2 to be used. In addition, the coil material 3 whose direction has been changed is transferred to the guide 13 and the roll feeder 1.
5. A roller guide 10 is installed on the exit side of the reversing guide 40 in order to supply the press machine that is the equipment 2 used.
is provided. The roller guide 10 consists of an upper roller 11 and a lower roller 12, and the lower roller 12 is movable in the left-right direction in the figure. In this embodiment, since the equipment 2 used is a press machine, the roll feeder 15 is rotated by a driving means (not shown) at fixed cycle times.
It is driven repeatedly with stops. The reversing guide 40 is supported by a slider 36 on the guide rail 32 opposite to the curved portion 41 at the upper part thereof, and is not rotatable in any direction other than the longitudinal direction of the guide rail 32, and is supported by a reciprocating means 33 as shown in FIG. An upper threading guide 31 that is moved in the left-right direction is provided. This upper threading guide 31 and the reciprocating means 33
An upper threading means 30 is formed from the upper threading means 30, which is used to move the upper threading guide 31 to the reversing guide 4 during a so-called threading operation in which the coil material 3 is inserted from the leveler 5 to the roll feeder 15.
0 direction (to the position indicated by the chain line in FIG. 1), and guides the coil material 3 so that its tip end is surely inserted into the roll feeder 15. In other words, the space S2 is narrowed. Furthermore, a lower threading guide 21 is provided to face the loop guide 61 and to narrow the space S ₁ , and a lower threading means 2 is connected to the lower threading guide 21 and a support shaft 22 that rotatably supports it.
0 is formed. Lower threading means 20
Inverts the coil material 3 from the leveler 5 into the guide 4
0. Further, during threading, the upper threading means 30 and the lower threading means 20 are formed to interlock with each other through a position adjusting means 50. In this embodiment, the lower threading guide 21 is formed into an L-shape with the long side being rotatably supported by the support shaft 22, and a shaft 5 is formed between the short side and the upper threading guide 31.
A position adjustment means 50 is constituted by a link bar 51 rotatably supported via 2 and 53. Therefore, when the reciprocating means 33 of the upper threading means 30 is operated, the upper threading guide 31
Since the lower threading guide 21 moves so as to narrow the space _S2 and the lower threading guide 21 moves so as to narrow the space _S1 , the two work together to complete the preparation for threading.

Now, the reciprocating means 33 of the upper sledding means 30 includes an air cylinder 34 supported by a column 37 that moves the upper sledding guide 31 via a slider 36, and an air source 3 connected to this air cylinder.
The attitude control device 80 of the loop guide means 60 includes a setting device 81 for setting the characteristics of the coil material 3 and an angle detector. A control circuit 82 that compares both output signals from the motor 74 and the motor 7
1 and a setting device 81. Here, the loop guide means 6
0 is a means for forming an appropriate loop of the coil material 3 during normal operation, and is intended to be made with an inclination angle, so the radius of curvature p of the loop is determined by the moment of inertia I and Young's modulus. E
The setting device 81 is configured to set the plate thickness t of the coil material 3 which determines the moment of inertia I on the basis that the moment of inertia I is proportional to . Note that although the width W of the coil material 3 is constant, the Young's modulus E can be changed in the control circuit 82 in consideration of the type of material.

Then, both control circuits 35 and 82 set the changeover switch 104 to "auto" and set the start switch 103 to "auto".
By operating , a command signal based on a predetermined procedure is input from the sequence circuit 102, and first,
On the condition that the loop guide 61 is at the lowest position (the inclination angle is the minimum in the figure), the reciprocating means 33 is controlled to move the upper sledding guide 31 to the most advanced position (the position indicated by the chain line in Figure 1). After that, the leveler 5 is started to supply the coil material 3,
After confirming that the coil material 3 is inserted into the roll feeder 15, that is, on the condition that the threading work is completed, the reciprocating means 33 is operated in reverse again to move the upper threading guide 31 to the most retracted position (solid line in Figure 1). ). Subsequently, a series of sequences are configured to proceed such that the attitude control device 80 is operated so that the inclination angle of the loop guide 61 becomes the corresponding inclination angle based on the plate thickness t preset in preparation for normal operation. Note that if the changeover switch 104 is set to "manual", the attitude control device 80 is configured to be able to operate independently. The control circuit 101 issues start and stop signals to the leveler 5 and roll feeder 15. The control circuits 35, 82, and 101 are integrally formed and housed in the control panel 100 together with a sequence circuit 102 formed from a logic circuit.

The angle detector 74 includes a setting device 81 and a driver 8.
3, etc., so it can be formed from an analog type such as a tacho-generator, a digital type such as a pulse generator, or a large number of limit switches, but in this embodiment, a tacho-generator is used. The position detectors PS _R and PS _L are
This is for detecting the most advanced position and the most retracted position of the upper sliding guide 31, and is provided along the guide rail 32, but it may be integrated with the air cylinder 34.

The contact detection switch PS _EM provided on the upper threading guide 31 detects the coil material 3 during normal operation.
This is a switch for stopping the roll feeder 15 so that the coil material 3 cannot be supplied to the equipment 2 when it comes into contact with the roll feeder 15.

The light receivers _HCR and _HCL cooperate with the light emitters _OPR and _OPL to detect the loop portion 3A of the coil material 3 in the loop region R.
This is to check the presence or absence of the feed roller 6 of the leveler 5 in order to ensure that the appropriate amount of loop portion 3A is retained within the loop region _R when light is incident on the photoreceiver HCR. If the speed is too high and no light is incident on the light receiver _HCL , the loop portion 3A is too large, so the feed roller 6 is stopped or decelerated. Therefore, no light enters the receiver HC _R and the receiver
A predetermined amount of loop portion 3A is formed while light is incident on the _HCL . The light receiver _HCR is also used to detect the completion of threading, and in this embodiment, the light receiver _HCR also serves as the light receiver _HCRF (see FIG. 4).

Equipment 2 that uses a press machine configured in this way
In this embodiment, the operation is as follows.

(Preparation process) The coil material 3 is pulled out from the uncoiler 1, inserted into the feed roller 6 of the leveler 5, and the coil material 3 is clamped. Setter 8 sets the plate thickness t of the coil material 3.
Set to 1. Next, changeover switch 104 is switched to "auto".

(Threading process) When the start switch 103 is turned ON, as shown in the flow sheet of FIG. It is judged based on the output signal of the photoreceiver _HCR whether or not it remains in the region R. If it remains, the automatic operation is stopped because the block is NO.

If no loop remains, the block determines whether the loop guide 61 is at the lowest limit based on the output signal of the angle detector 74, and if NO, the attitude adjustment means 70 is controlled by the attitude control device 80 to make YES. .
Next, the upper sledding guide 31 is moved to the forward limit by controlling the reciprocating means 33 using the block. The forward limit is a position detection switch.
Confirmed by _PSL . In this case, when the air cylinder 34 is actuated based on a command from the control circuit 35 to move the upper sledding guide 31 to the left in the figure, the lower sledding guide 21 of the lower sledding means 20 is supported via the position adjustment means 50. axis 2
Rotates counterclockwise around 2. Therefore,
When the upper threading guide 31 moves forward most, the spaces S ₁ and S ₂ become minimum, and a guide path for the coil material 3 to the roll feeder 15 is established. Therefore,
When the leveler 5 is rotated forward in the block, the tip of the coil material 3 is aligned with the lower threaded twining guide 2.
1. The sheet passes through the space _S1 of the lube guide 61, reverses its direction at the reversing guide 40, and then passes through the space _S2 between the reversing guide 40 and the upper threading guide 31 to the roll feeder 15. This is the emitter OP _R
Since the light beam is not received by the light receiver _HCR when the light beam is emitted from the light receiver HCR, it is confirmed by the light receiver _HCR (acting for the HC _RF in Fig. 4), and when it is confirmed, the leveler 5 is stopped (block). If the process is not completed even after that time has elapsed, there is a failure in one of the processes, so the block automatically cancels the process. In this case as well, the leveler 5 is stopped (block).

When threading is completed, the reciprocating means 33 is operated to retract the upper threading guide 31 to establish a loop in normal operation, and the final retraction limit is confirmed by the signal from the position detection switch PS _R. In this case, the lower sliding guide 21 returns to its normal position with the maximum inclination angle via the position adjustment means 50 (block). Now that the threading has been completed, the block drives the posture control device 80 to control the loop guide 61 to an inclined position corresponding to the plate thickness t of the coil plate 3 set in advance by the setting device 81. With this, the threading process is completed.

(Normal Operation) The roll feeder 15 is operated intermittently to supply coil material at every cycle time of the press machine. On the other hand, the feed roller 6 of the leveler 5 continuously feeds the coil material 3 from the uncoiler 1 in the direction of the loop guide 61 with a predetermined rotation. Therefore, normally, the loop portion 3A of the coil material 3 moves left and right within the loop region R, and the light receiver _HCL receives light.
The _HCR is in a state where light is blocked and normal operation is performed. In this case, the loop guide 61 is inclined at an angle so as to form a loop that is optimal for the plate thickness t of the coil material 3, so that the loop portion 3A does not run out or distort. by the way,
When some kind of situation occurs in the equipment 2 used, such as a press machine, and the light receiver _HCL is no longer receiving light, a command is issued from the control circuit 101 to stop the leveler 5. On the other hand, not only the amount of photodetector _HCL but also _HCR has decreased, so leveler 5
speed up. In spite of this, when the retained amount further decreases and comes into contact with the upper threading guide 31, the position detection switch _PSEM operates as a dangerous condition and completely stops the roll feeder 15 and the press.

According to this embodiment, the upper threading means 3
0 is moved after confirming the preparation conditions, and the space _S2 is automatically adjusted, and in addition, the loop guide means 60 is continuously controlled to the optimum condition, and the leveler 5 is also activated at the appropriate time, so that automatic threading is achieved. Therefore, the operator only has to set the coil material 3 from the uncoiler 1 to the leveler 5, set the plate thickness t to the setting device 81, and operate the changeover switch 104 and start switch 103. Since there is no need to manually guide the coil material 3 while manually adjusting each component, the efficiency of threading work can be dramatically improved.

Furthermore, since the lower threading guide 21 automatically follows the movement of the upper threading guide 31,
Even if the coil material 3 is thin with a plate thickness t, the space S ₁
Since the coil material 3 does not bend or bend within the space _S2 , and does not wind itself in the space S2, no damage is caused to the coil material 3.
From this point of view as well, work efficiency can be improved compared to the conventional method which causes damage. Furthermore, after the threading is completed, the loop guide 61 is automatically controlled to have an inclination angle that is optimal for the plate thickness t, so an ideal loop is established during normal operation, so even if the coil material 3 is thin, the loop area is It does not cause flapping or the like within R, and even if the coil material 3 is thick, it does not cause excessive distortion, and stable normal operation can be ensured. Therefore, the productivity of the equipment 2 used can be increased.

In the above embodiments, the equipment used was a press machine, but since it is a coil material supply device that changes the direction of the coil material and supplies it, the coil material is required continuously or intermittently, e.g. It is also applicable to metal surface treatment equipment, etc. Also,
Although the reciprocating means for the upper threading means is an air cylinder, it may also be a motor as long as it can reciprocate the upper threading guide. Similarly, the position adjustment means and the attitude adjustment means are not limited to any type, and can be arbitrarily selected such as an analog servo mechanism or a digital servo mechanism.

In addition, although the plate thickness is set using the setting device, since the present invention only requires setting the characteristics of the coil material used to form the optimal loop, the characteristics may be abstracted as a product number. ,
It is also possible to variably set the Young's modulus or the plate width. Note that each control circuit, sequence circuit, etc. may be a computer.

[Effect of idea]

This invention has the excellent effect that automatic threading can be performed once the characteristics of the coil material are set, and then normal operation can be performed with a loop that is optimal for the characteristics of the coil material to be used.

[Brief explanation of drawings]

Fig. 1 is an overall view of the coil material supply device according to the present invention, Fig. 2 is a side view of the pivot means, Fig. 3 is a front view of the attitude adjustment means corresponding to Fig. 2, and Fig. 4 is a front view of the attitude adjustment means corresponding to Fig. 2.
Figure 5 is the same overall circuit diagram, Figure 5 is a flow sheet for explaining the operating procedure, Figure 6 is a flow sheet for explaining the operating procedure of the attitude control device, and Figure 7 is for the conventional coil material. It is a conceptual diagram showing a supply device. DESCRIPTION OF SYMBOLS 1...Uncoiler, 2...Equipment used, 3...Coil material, 5...Leveler, 15...Roll feeder, 20...Lower threading means, 30...Upper threading means, 40...Reversing guide, 50
... Position adjustment means, 60 ... Loop guide, 65
... Pivoting means, 70 ... Attitude adjustment means, 80 ...
Attitude control device, 100... control panel.

Claims (1)

[Claims for Utility Model Registration] (1) The direction of movement of the coil material fed out from the uncoiler and passed through the leveler is horizontally reversed to the side of the equipment to which the coil material is supplied, and the loop portion of the coil material is removed. a vertical reversing guide for forming the reversing guide; an upper sledding guide that faces the reversing guide in the horizontal direction and can move forward and backward with respect to the reversing guide; and an upper sledding guide that reciprocates relative to the reversing guide a reciprocating means for moving the upper sliding guide; and a shaft support means disposed below the upper sliding guide between the leveler and the reversing guide and provided at the end on the leveler side so as to be freely movable up and down. a loop guide that is supported by a top surface portion of the coil material and guides the coil material to the reversal guide; It has an attitude adjustment means for adjusting the attitude, and a setting device for setting the characteristics of the coil material to be used, and the attitude adjustment means is adjusted to correspond to the characteristics of the coil material set by the setting device. an attitude control device for driving and controlling to establish the attitude of the loop guide with respect to the reversing guide; and a sequence circuit for driving and controlling the reciprocating means and the attitude control device; The sequence circuit includes a coil material threading circuit section that moves the upper threading guide to the forward limit on the reverse guide side on the condition that the loop guide is in the lower limit posture for threading the coil material; In order to supply the material to the device, the upper slendying guide is moved to the retraction limit, and the attitude of the loop guide relative to the reversing guide is adjusted to a posture that corresponds to the characteristics of the coil material set by the setting device. 1. A coil material supply device comprising: a coil material supply circuit section. (2) In the coil material supply device according to claim 1 of the utility model registration, the setting device of the attitude control device sets the plate thickness of the coil material as the characteristic of the coil material. , the attitude control device includes an angle detector for detecting the attitude of the loop guide with respect to the reversing guide, and a control circuit that compares output signals of the setting device and the angle detector and outputs a control signal. and a driver for driving the motor of the attitude adjustment means based on the control signal.