JPH0340406Y2 - - 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 coiled 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 for highly flexible materials such as foil metal, plastic film, and wire.
For example, in the case of a press machine, the material used is highly rigid, so a so-called loop method is adopted that takes advantage of this rigidity.

As shown in FIG. 2, the conventional loop-type feeding device for coiled material has a device 2 and an uncoiler 1 disposed vertically, and prevents bending of the coiled material 3 including a feed roller 6 that sends out the coiled 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. Then, while ensuring the amount of coil material 3 held between the feed roller 6 and the roll feeder 15 with the width of the loop area R, the uncoiler 1 is attached to the equipment 2 to be used.
The structure is designed to ensure stable and smooth supply. Here, the loop area R is determined based on the type of equipment used, its operating mode, the rigidity of the coil material 3, etc., but the wider the loop area, the more sufficient the amount of the coil material 3 can be secured. However, if it is too wide, the reversal guide 4
Since the tip of the coil material 3 reversed at 0 does not necessarily run reliably to the roll feeder 15, the reversing guide 40 is provided with an upper threading guide 31 that is capable of reciprocating in the horizontal direction, and the tip of the coil material 3 is initially transferred to the roll feeder 15. This makes it easy to insert into. In addition, a lower threading guide 21 is disposed facing the loop guide 61 so that the coil material 3 from the leveler 5 is reliably guided to the loop region R.
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 the 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. This causes the inconvenience that the coil material 3 bends within the space S ₁ or winds itself within the loop region R. Therefore, in the threading process, not only does it require excessive labor from the operator and automatic threading is not possible, but also the coil material 3 This resulted in a situation where a certain range could not be used as a product. In addition, since the radius of curvature of the reference loop is too large during normal operation, the coil material 3
This caused a flapping 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, smooth execution and automation of threading cannot be achieved, whereas the optimal configuration for threading is assumed to be the coil material 3 with the lowest rigidity. If so, 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, during threading, the upper threading guide 31 is capable of reciprocating from a place close to the roll feeder 15 toward the reversing guide 40, so by narrowing the space _S2 and the loop area R, it is possible to The number of turns can be relatively small. However, in contrast, since the lower threading guide 21 is conventionally provided based on the case where the radius of curvature is large, the problem of occurrence of bending of the coil material 3 in the space _S1 near the threading guide is considered to be serious. It's here.

[Purpose of invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an excellent coil material supply device that can perform reliable threading by interlocking the movement of the upper threading guide and the movement of the lower threading guide.

[Means and actions for solving problems]

(Means) 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, the coil is disposed between the uncoiler and the reversing guide. The method includes a loop guide for guiding the material, an upper sledding guide that can be reciprocated in the direction of the reversing guide by a reciprocating means, and a lower sledding guide disposed opposite to the loop guide, A position adjusting means is provided for adjusting the position of the lower threading guide in a direction approaching the loop guide when the upper threading guide is moved in the direction approaching the reversing guide, and the position adjusting means moves the reciprocating direction. In order to achieve the above object, the present invention is configured to be driven by means.

(Function) Since the present invention has such a configuration, the upper threading guide is moved in the direction of the reversing guide by the reciprocating means to reduce the space S ₂ between it and the reversing guide.
When the material is suitable for threading, the lower threading guide disposed opposite to the loop guide is interlocked with the position adjustment means so that it can follow the upper threading guide. Therefore, the above space S ₂
When becomes the narrowest, the space _S1 between the lower sledding guide and the loop guide also becomes the narrowest, so
Completely reliable threading is possible regardless of changes in the rigidity of the coil material. Also, threading,
If the rear upper threading guide is returned to the predetermined position to form a proper loop and ensure proper retention, the lower threading guide will also be returned to the selected position to avoid causing excessive strain on the coil material, allowing normal operation. It is possible to ensure that the

Therefore, it is possible to establish a coil material supply device that is safe and reliable as a whole.

〔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 FIG. 1, with an 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 vertical reversing guide 40 and the upper threading guide 31 of the upper threading means 30 are arranged in the horizontal direction. The loop guide 61 of the loop guide means 60 and the lower threading guide 21 of the lower threading means 20 disposed below the upper threading means 30 are vertically opposed to each other.

The leveler 5 is formed of a feed roller 6 rotated at a constant speed by a driving means (not shown) and a plurality of two-stage rollers 7, 7... arranged at different stages in the arrangement direction.
The coil material 3 is pulled out from the uncoiler 1, its bends are corrected, and the coil material 3 is 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..., a pivot means 65 that rotatably supports the loop guide 61, and rotates the loop guide 61 at an angle. The loop guide 61 is arranged between the leveler 5 and the reversing guide 40, and the coil material 3 is arranged between the leveler 5 and the reversing guide 40. The loop guide 61 is guided by the upper surface of the loop guide 61, which slopes upward toward the 40 side, and is sent to the reversing guide 40.

A reversing guide 40 fixed vertically to a column 42
is fed out from uncoiler 1 and leveler 5
This is for horizontally reversing the moving direction of the coil material 3 that has passed through the loop guide means 60, and curved portions 41 for guiding the coil material are formed at the upper and lower ends of the reversing guide 40. The coil material 3 forms a loop portion 3A and is supplied to the equipment in use. Further, a guide 13 and a roll feeder 15 are provided on the exit side of the reversing guide 40 in order to supply the coiled material 3 whose direction has been changed to the press equipment that is the equipment 2 used.

Note that the roller guide 10 formed by the upper roller 11 and the lower roller 12 is a guide means for suppressing the fluttering of the coil material 3. In this embodiment, since the equipment 2 used is a press machine, the roll feeder 15 is repeatedly driven to rotate and stop by a drive means (not shown) at fixed cycle times. An upper sliding guide 3 is non-rotatably supported by a guide rail 32 via a slider 36, facing the upper curved portion 41 of the reversing guide 40, and is moved in the left-right direction in FIG. 1 by a reciprocating means 33.
1 is provided. An upper threading means 30 is formed from the upper threading guide 31 and the reciprocating means 33, and is used as a reversing guide for the upper threading guide 31 during so-called threading work in which the coil material 3 is inserted from the leveler 5 to the roll feeder 15. Approaching in the direction of 40 (first
(position indicated by the chain line in the figure) and guides the tip of the coil material 3 so that it is reliably inserted into the roll feeder 15. In other words, it narrows the space _S2 . Further, a lower threading guide 21 is provided to face the loop guide 61 and to narrow the space _S1 .
1 and a support shaft 22 that rotatably supports the lower threading means 20. The lower threading means 20 reliably guides the coil material 3 from the leveler 5 to the reversing guide 40. 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 shafts 52, 53 are attached to the short side and the upper threading guide 31. A position adjustment means 50 is constituted by a link bar 51 rotatably supported through the link bar 51. Therefore, when the reciprocating means 33 of the upper threading means 30 is operated, the upper threading guide 31 moves so as to narrow the space _S2 , and the lower threading guide 21 moves so as to narrow the space _S1 , so that both are linked. The preparation for threading can then be completed.

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 cylinder 34 that controls the supply and removal of air from an air source (not shown) to this air cylinder. It is formed from a control circuit that does not have a position sensor PS _R , PS _L
is the most advanced position of the upper threading guide 31,
Guide rail 3 is for detecting the last retracted position.
Although it is provided along the air cylinder 2, 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 . Note that the light receiver _HCR also detects the completion of threading.

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.

Reciprocating means 3 by operating a switch (not shown)
3 to move the upper sliding guide 31 to its forward limit. 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 a control circuit (not shown) to move the upper threading guide 31 to the left in the figure, the lower threading guide 21 of the lower threading means 20 moves through the position adjusting means 50. It rotates counterclockwise around the support shaft 22. Therefore, when the upper threading guide 31 is advanced the most, the spaces S ₁ and S ₂ become minimum, and the coil material 3
The guide path to the roll feeder 15 is established, and the preparation process is completed.

(Threading process) When the leveler 5 is rotated in the normal direction, the tip of the coil material 3 passes through the space S ₁ between the lower threading guide 21 and the loop guide 61, reverses its direction at the reversing guide 40, and then rotates between the reversing guide 40 and the upper threading guide. The sheet is passed to the roll feeder 15 via the space S ₂ with the guide 31. This is because when a light beam is emitted from the emitter _OPR , it is not received by the receiver _HCR .
Confirmed by _HCR , and once confirmed, leveler 5 is stopped. If the leveler 5 is not completed even after the elapse of that time, there is a failure in one of them, so the leveler 5 is also stopped in this case.

(Normal operation) When threading is completed, the reciprocating means 33 is operated to retract the upper sledding 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.
Next, the roll feeder 15 is operated intermittently to feed the coil material 3 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, the light receiver _HCL receives light, and the _HCR is in a state where the light is blocked, allowing normal normal operation. Since the loop guide 61 is inclined at an angle so as to form an optimal loop for the plate thickness t, the loop portion 3A does not run out or distort. By the way, when some kind of situation occurs in the equipment 2 in use, such as a press machine, and the light receiver _HCL does not receive light, a command is issued from a control circuit (not shown) to stop the leveler 5. On the other hand, when not only the light receiver _HCL but also _HCR receives light, the amount of coil material 3 held within the loop region R has decreased, so the leveler 5 is accelerated. 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 guide 31 is advanced in the direction of the reversing guide 40 by the reciprocating means 33 of the upper threading means 30, and the optimum space S ₂ is created for threading the coil material 3 onto the roll feeder 15. At the same time, the position adjustment means 5
Since the space S ₁ can be established by interlocking the lower threading guide 21 of the lower threading means 20 through the thread, the tip of the coil material 3 does not wind itself in front of the roll feeder 15 and the loop guide 61 Since there is no bending or bending on the upper side, reliable threading can be achieved.

In addition, after threading, the upper threading guide 31 and the lower threading guide 21 work together to return to the specified position, so that an appropriate loop can be formed and a sufficient amount of coil material 3 can be secured, and the coil material 3 can be properly It is effective as an automatic threading device that takes into consideration normal operation without causing any distortion. Further, since the position adjusting means 50 is formed from the link bar 51, stable operation can be guaranteed, and a coil material with a simple structure and easy handling that does not require a special drive mechanism to drive the lower threading guide 21 is used. It can be used as a supply device.

[Effect of idea]

This invention has a position adjustment means with a simple structure and allows the upper threading guide and the lower threading guide to be linked, so that the coil material can be threaded reliably without bending or winding. It has an excellent effect.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an embodiment of a coil material supply device according to the present invention, and FIG. 2 is a conceptual diagram of a conventional coil material supply device. 1...Uncoiler, 2...Equipment used, 3...
Coil material, 5... Leveler, 15... Roll feeder, 20... Lower threading means, 21...
Lower threading guide, 30... Upper threading means, 31... Upper threading guide, 4
0... Reversing guide, 50... Position adjustment means, 60
... Loop guide, 65 ... Pivoting means, 70 ...
Posture adjustment means.

Claims (1)

[Claim for Utility Model Registration] A method for forming a loop portion of the coil material by horizontally reversing the moving direction of the coil material that has been fed out from the uncoiler and passed through the leveler toward the equipment to which the coil material is supplied. a vertical reversing guide; an upper sliding guide that faces the reversing guide in the horizontal direction and is movable forward and backward with respect to the reversing guide by a reciprocating means; and this reversing guide between the leveler and the reversing guide. a loop guide disposed with an upward slope to the side and for guiding the coil material with an upper surface portion and sending it to the reversing guide; and a loop guide disposed below the upper threading guide vertically facing the loop guide. It also has an L-shaped shape consisting of a long side and a short side,
a lower sledding guide that is rotatable up and down about a support shaft provided at the end of the long side on the leveler side; a lower part of the upper sledding guide and a short side end of the lower sledding guide; A coil material supply device comprising: a link bar having both ends rotatably connected to the upper threading guide and the lower threading guide for connecting the upper threading guide and the lower threading guide.