JP2019014601A - Coil lifter - Google Patents

Abstract

To provide a coil lifter capable of preventing an edge cut of a metal band coil to an end face even if a proximity direction of a pair of arms is deviated from an axis line of the metal band coil.SOLUTION: A lifter body 2 hanged down movably, a pair of arms 3, 3 arranged in the lifter body, a pair of pawls 6, 6 arranged in an opposing direction to a lower part of the pair of arms each other, a drive part 4 for moving the pair of arms in proximity toward or away from both end surfaces of a metal band coil C, and a pair of touch plates 7, 7 arranged on an opposing surface of the pair of arms are provided. A contact surface 9 of the pair of touch plates in contact with an end surface Ct of the metal band coil is formed in a circular arc surface shape protruding toward the end surface in a plain view and a thickness shape of the pair of touch plates is in a slope shape which gets thinner gradually from an upper end to a lower end of a thickness of a flat rear surface 8 extending in a vertical direction facing a side of the pair of arms and the contact surface.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a coil lifter for carrying a metal strip coil.

In a metal band manufacturing factory or a factory that uses a metal band to manufacture products, a coil lifter is used as a metal band coil conveying means.
The coil lifter includes a lifter main body that is movably suspended, and a pair of arms that are arranged so as to be able to contact with and separate from the lifter main body and that have claws provided in opposite directions at the lower ends.
By the way, the end surface of the metal band coil is not necessarily a flat surface, and often has an end surface irregularity such as an inner peripheral portion or an outer peripheral telescope or an edge irregularity.
When such a metal band coil with uneven end faces is gripped by a coil lifter, there is a risk that the pair of arms will crush the uneven end face portions, resulting in ear cutting.

For example, the techniques described in Patent Documents 1 and 2 are known as methods for preventing the metal band coil from being cut off.
In the technique of Patent Literature 1, a pair of detectors that detect contact with the end face of the metal band coil are provided on the opposite sides of the pair of arms. The pair of detectors are a pair of plates arranged with a predetermined inclination so as to spread downward from above, and when the metal band coil is lifted, the inclination is maintained while being moved in parallel. The lower part of the pair of plate members is retracted toward the pair of arms than the position where the upper part of the plate member is in contact with the metal band coil, thereby preventing the metal band coil from being cut off.

  In the technique of Patent Document 2, a pair of touch plates for detecting contact with the end face of the metal band coil is provided on the opposite sides of the pair of arms. The pair of touch plates is a pair of plate members arranged with a predetermined inclination so as to spread downward from above. A sensor that detects that the pair of touch plates move in a direction approaching each other, a posture holding link that holds the posture of the predetermined inclination angle, and a stopper that prevents excessive activation of the posture holding link. And a driving means for stopping the approach of the pair of arms, so as to prevent the end of the metal band coil from being cut off.

Patent No. 5526594 Patent No. 5716348

By the way, the detector of patent document 1 and the touch plate of patent document 2 are plate-shaped members in which the contact surface that contacts the end surface of the metal band coil is a flat surface, and the periphery of the contact surface is a corner.
For this reason, when the approaching direction of the pair of arms is deviated from the axis of the metal band coil, the corners of the detector of the patent document 1 (or the touch plate of Patent document 2) which is a plate member are There is a risk that the ears may be cut off in contact with the end face.
Therefore, the present invention has been made paying attention to the unsolved problems of the above-described conventional example, and even if the proximity direction of the pair of arms is deviated from the axis of the metal band coil, the end face of the metal band coil is obtained. An object of the present invention is to provide a coil lifter that can prevent the ear from being cut off.

  In order to achieve the above object, a coil lifter according to an aspect of the present invention includes a lifter body suspended in a movable manner, a pair of arms arranged in the lifter body, and a direction facing each other at the lower part of the pair of arms. A pair of claws, a drive unit that moves the pair of arms toward or away from both end faces of the metal strip coil, and a pair of touch plates disposed on the opposing surfaces of the pair of arms. The contact surface that comes into contact with the end surface of the metal band coil of the touch plate is formed as an arc surface shape that protrudes toward the end surface in plan view, and the thickness shape of the pair of touch plates faces the pair of arms. Thus, the thickness of the flat back surface and the contact surface extending in the vertical direction is gradually decreased from the upper end toward the lower end.

  According to the coil lifter according to the present invention, even if the proximity direction of the pair of arms is deviated from the axis of the metal band coil, it is possible to prevent the end of the metal band coil from being cut off.

It is a schematic block diagram which shows the coil lifter of 1st Embodiment which concerns on this invention. It is the figure which showed the touch board arrange | positioned at a pair of arm of a coil lifter from the contact surface side. It is the figure which showed the touch plate from the back side. It is a figure which shows the state by which the touch board is supported by the arm. FIG. 5A is a diagram showing a state where the touch plate of the coil lifter according to the present invention is in contact with the end face of the metal band coil, and FIG. 5B is a diagram showing that the conventional touch plate having a corner shape is made of metal. It is a figure which shows the state which is contacting the end surface of a strip coil. It is a schematic block diagram which shows the coil lifter of 2nd Embodiment which concerns on this invention. It is a schematic block diagram which shows the coil lifter of 3rd Embodiment which concerns on this invention. It is a perspective view which shows the touch plate of 3rd Embodiment. It is a figure which shows the main-body part which comprises the touch board of 3rd Embodiment. It is a figure which shows the adapter part which comprises the touch board of 3rd Embodiment. It is a figure which shows the back surface of the touch plate of 3rd Embodiment. It is a figure which shows the main-body part which comprises the touch board of 4th Embodiment which concerns on this invention.

Next, the first to fourth embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.
In addition, the following first to fourth embodiments exemplify apparatuses and methods for embodying the technical idea of the present invention, and the technical idea of the present invention includes components. The material, shape, structure, arrangement, etc. are not specified below. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.

[Coil Lifter of First Embodiment]
FIG. 1 shows a coil lifter 1 according to a first embodiment that lifts and conveys a metal strip coil C.
The coil lifter 1 according to the first embodiment includes a lifter body 2 suspended movably on a wire (not shown), a pair of arms 3 and 3 disposed on the lifter body 2, and a pair of arms 3 and 3. A drive unit 4 incorporated in the lifter body 2 that moves in the direction of approaching or separating, and a control unit 5 that controls the drive unit 4 are provided.
The pair of arms 3, 3 is provided with a claw 6 at the lower part on the opposite side, and a pair of touch plates on the inner side surfaces 3 a, 3 a facing the pair of arms 3, 3 above the claw 6. 7,7 are arranged.

2 and 3, the touch plate 7 includes a flat back surface 8 that faces the inner surface 3 a of the arm 3, a contact surface 9 that contacts the end surface Ct of the metal band coil C, a back surface 8, and a contact surface. 9 is a long metal plate having side surfaces 10a, 10b extending in the longitudinal direction between the two.
A rib plate 11 protrudes along the longitudinal direction at the center of the rear surface 8 in the width direction, and a pair of touch plate side brackets 13 having pin holes 12 are provided at positions spaced apart in the longitudinal direction of the rib plate 11. ing.

The contact surface 9 of the touch plate 7 is formed in an arcuate surface shape that protrudes with a predetermined radius of curvature R in a direction away from the back surface 8 when the touch plate 7 is viewed from one end in the longitudinal direction.
Further, the thickness shape in the longitudinal direction of the touch plate 7 is a gradient shape in which the thicknesses of the back surface 8 and the contact surface 9 are gradually reduced from one end to the other end in the longitudinal direction.
As shown in FIG. 2, in the case of the touch plate 7 having a longitudinal length L of 1020 mm, a width dimension H of 170 mm, and a maximum thickness A of 30 mm, the curvature radius R of the contact surface 9 is set to 377 mm. Yes. Further, a chamfering process is performed at the intersection between the contact surface 9 of the touch plate 7 and the side surfaces 10a and 10b.

Further, as shown in FIG. 4, the gradient angle γ of the entire circumference of the contact surface 9 with respect to the back surface 8 is set to 0.38 to 6.3 °. Here, when the gradient angle γ is less than 0.38 °, the touch plate 7 becomes a thin plate and there is a problem in strength, and as shown in FIG. 1, from around the inner diameter hole Ch of one end surface Ct. The pressing force against the winding deviation M generated by the metal band protruding in a telescope shape is not relaxed. Further, when the gradient angle γ exceeds 6.3 °, the strength of the touch plate 7 is improved, but the coil lifter 1 may increase in weight.

As shown in FIG. 4, a vertical groove 14 extending in the vertical direction is formed on the inner surface 3 a of one arm 3, and the rib plate 11 of the touch plate 7 and a pair of touches are formed in the vertical groove 14. The plate side bracket 13 is inserted. A pin 15 that penetrates the arm 3 in the horizontal direction is inserted into the pin hole 12 of the pair of touch plate side brackets 13. Thereby, the touch plate 7 disposed on one arm 3 is supported so as to be rotatable around the pair of pins 15 while slightly moving in the vertical direction.
The other arm 3 is also formed with a vertical groove 14 like the one arm 3, and the touch plate 7 disposed on the other arm 3 is also supported rotatably around a pair of pins 15. ing.

Next, the operation | movement which conveys the metal strip coil C using the coil lifter 1 of 1st Embodiment is demonstrated with reference to FIG.
In the metal band coil C, the metal band protrudes in a telescope shape around the inner diameter hole Ch of one end face Ct, and the winding deviation M occurs.
First, the distance between the lower claws 6 and 6 of the pair of arms 3 and 3 is separated so as to be larger than the coil width of the metal strip coil C placed on a coil base (not shown). . Next, the lifter body 2 is lowered from above the metal band coil C.

Next, a drive signal is output from the control unit 5 to the drive unit 4 by the operation of the operator so that the claws 6 of the pair of arms 3 and 3 enter the inner diameter hole Ch of the metal band coil C. , 3 are brought closer to each other. When the pair of arms 3 and 3 are brought closer to each other, the contact surfaces 9 of the pair of touch plates 7 and 7 disposed on the inner side surfaces 3a and 3a of the pair of arms 3 and 3 are brought to the end surface Ct of the metal band coil C. Contact.
Then, the lifter body 2 is raised while the contact surfaces 9 of the pair of touch plates 7 and 7 arranged on the pair of arms 3 and 3 are in contact with the end surface Ct, and the claws 6 and 6 of the pair of arms 3 and 3 are inserted into the inner diameter holes. The metal strip coil C is supported in contact with the uppermost surface of Ch.

Thereafter, when the contact surface 9 of the touch plates 7 and 7 hits the end surface Ct of the metal band coil C and the pair of arms 3 and 3 are not in proximity to each other, the operator outputs a drive signal to the drive unit 4. Stop.
Then, the metal band coil C is lifted to a predetermined height by the lift of the lifter body 2, moved to a desired position or above the transport vehicle, the lifter body 2 is lowered, and then the claws 6, 6 of the pair of arms 3, 3. Is separated from the inner diameter hole Ch of the metal band coil C, thereby completing the conveyance of the metal band coil C.

Next, the effect of the coil lifter 1 of the first embodiment will be described with reference to FIGS. 5 (a) and 5 (b).
FIG. 5A shows a state in which the touch plate 7 is in contact with the end face Ct in a plan view without matching the direction B in which the pair of arms 3 and 3 are close to the axis Pc of the metal band coil C. It is the figure shown typically.
According to FIG. 5A, even if the axis Pc of the metal strip coil C and the direction B in which the pair of arms 3 and 3 are close to each other do not coincide, the arc-shaped contact surface 9 of the touch plate 7 is the metal strip coil. It contacts the end face Ct of C. For this reason, when carrying the metal strip coil C, the end face Ct is not cut off.

On the other hand, as shown in FIG. 5B, the contact surface 17 that contacts the end surface Ct of the metal strip coil C is a flat surface, and the corners 18 and 19 exist on the periphery of the contact surface 17. When the touch plate 20 is used, the corner 18 of the touch plate 20 contacts the end surface Ct of the metal band coil C when the axis Pc of the metal band coil C and the proximity direction B of the pair of arms 3 and 3 do not match. As a result, the end face Ct may be cut off.
In the coil lifter 1 of the first embodiment, the thickness shape of the touch plate 7 is a gradient shape in which the thickness of the back surface 8 and the contact surface 9 gradually decreases from the upper end toward the lower end. The contact surface 9 is sufficiently separated from the winding deviation M protruding from the opening periphery of the inner diameter hole Ch of the band coil C. For this reason, generation | occurrence | production of the ear breakage by contact with the winding deviation M can also be prevented.

Further, since the chamfering process is also applied to the intersection between the contact surface 9 and the side surfaces 10a and 10b of the touch plate 7, even if this intersection contacts the end surface Ct of the metal strip coil C, the end surface Ct Ear cuts do not occur.
Furthermore, since the gradient angle γ of the entire circumference of the contact surface 9 with respect to the back surface 8 of the touch plate 7 is set to 0.38 to 6.3 °, the strength surface of the touch plate 7 is improved and the weight of the coil lifter 1 is increased. Can be prevented, and the pressing force against the winding deviation M generated around the inner diameter hole Ch of the one end face Ct can be reduced.

[Coil Lifter of Second Embodiment]
Next, FIG. 6 shows the coil lifter 21 of the second embodiment. The same components as those in the first embodiment shown in FIG.
In the coil lifter 21 of the second embodiment, the touch plate sensor 22 is disposed on the inner side surface 3a of the pair of arms 3 and 3. The touch plate sensor 22 outputs a sensor signal to the control unit 5 when the touch plates 7 and 7 come into contact with each other.
When the sensor signal is input from the touch plate sensor 22, the control unit 5 stops outputting the drive signal to the drive unit 4.
Here, the sensor according to the present invention corresponds to the touch plate sensor 22.

Next, the operation | movement which conveys the metal strip coil C using the coil lifter 21 of 2nd Embodiment is demonstrated with reference to FIG.
First, the lifter body 2 is lowered from above the metal strip coil C, and the control unit 5 outputs a drive signal to the drive unit 4 by the operation of the operator. As a result, the pair of arms 3 and 3 approach each other, and the claws 6 of the pair of arms 3 and 3 enter the inner diameter hole Ch of the metal band coil C.
As the pair of arms 3 and 3 approach each other, the contact surfaces 9 of the pair of touch plates 7 and 7 disposed on the inner side surfaces 3a and 3a of the pair of arms 3 and 3 become the end surface Ct of the metal band coil C. Contact.
Then, the lifter body 2 is raised while the contact surfaces 9 of the pair of touch plates 7 and 7 arranged on the pair of arms 3 and 3 are in contact with the end surface Ct, and the claws 6 and 6 of the pair of arms 3 and 3 are inserted into the inner diameter holes. The metal strip coil C is supported in contact with the uppermost surface of Ch.

Here, the touch plates 7 and 7 with the contact surface 9 abutting against the end surface Ct of the metal strip coil C move slightly upward while rotating around the pin 15, so that the back surface 8 contacts the touch plate sensor 22. The sensor signal is output to the control unit 5.
Since the control unit 5 to which the sensor signal is input from the touch plate sensor 22 stops outputting the drive signal to the drive unit 4, the operation of bringing the pair of arms 3 and 3 close to each other stops.
Then, the metal band coil C is lifted to a predetermined height by the lift of the lifter body 2, moved to a desired position or above the transport vehicle, the lifter body 2 is lowered, and then the claws 6, 6 of the pair of arms 3, 3. Is separated from the inner diameter hole Ch of the metal band coil C, thereby completing the conveyance of the metal band coil C.

In the coil lifter 21 of the second embodiment, even if the axis Pc of the metal band coil C and the proximity direction B of the pair of arms 3 and 3 do not coincide with each other, the arc-shaped contact surface 9 of the touch plate 7 has the metal band coil. Since it contacts the end surface Ct of C, there is no possibility that the end surface Ct is cut off when the metal strip coil C is transported.
In the coil lifter 21 of the second embodiment, the thickness of the touch plate 7 is a gradient shape in which the thickness of the back surface 8 and the contact surface 9 gradually decreases from the upper end toward the lower end. 7 is also chamfered at the intersection between the contact surface 9 and the side surfaces 10a, 10b, so that no edge breakage occurs in any part of the end surface Ct including the winding deviation M.

[Coil Lifter of Third Embodiment]
Next, FIG. 7 shows the coil lifter 24 of the third embodiment. In the third embodiment, the same components as those in the first embodiment shown in FIGS. 1 to 3 are not described.
The coil lifter 24 of the third embodiment is provided with a claw 6 at the lower part of the pair of arms 3, 3 facing each other, and an inner side surface 3 a, where the pair of arms 3, 3 positioned above the claw 6 faces. A pair of touch plates 25, 25 are arranged on 3a.
The touch plate 25 includes a main body portion 26 and an adapter portion 27 that is detachably held by the main body portion 26 and supported by the arm 3.

As shown in FIG. 8, the main body portion 26 includes a contact main body portion 28 having the same cross-sectional shape in the longitudinal direction, and a pair of held main body portions 29 a and 29 b protruding from both edges in the width direction of the contact main body portion 28. It is a metal member formed integrally.
As shown in FIG. 9, the contact main body 28 is a member in which a back surface 28 a is formed flat and an arc-shaped contact surface 28 b protruding with a predetermined curvature radius R in a direction away from the back surface 28 a is formed. is there.
The contact main body portion 28 is formed so as to calculate the maximum twist angle based on the width of the claw 6 of the coil lifter 1 and the inner diameter of the metal coil C, and to prevent contact with the end face Ct when the twist angle is maximized. To do. The thickness A1 of the contact main body 28 is designed in consideration that the hook of the claw 6 does not become too shallow. For example, when the thickness A1 of the contact body 28 is 30 mm, the width H1 of the contact body 28 is 70% or more of the width of the claw 6.

The pair of held portions 29 a and 29 b protrude in the direction away from the contact main body 28 on the same plane as the back surface 28 a of the contact main body 28.
As shown in FIG. 8, the adapter unit 27 includes a rectangular receiving plate 30, a pair of side plates 31 a and 31 b rising from both long side edges of the receiving plate 30, and lower ends of the pair of side plates 31 a and 31 b. And a pair of opposing plates 33a and 33b extending in a direction approaching each other from the upper ends of the pair of side plates 31a and 31b. I have.

Here, as shown in FIG. 10, the receiving plate 30 of the adapter unit 27 has the largest thickness (t1) on the opening 27a side (the upper end in FIG. 7), and the thickness gradually decreases toward the bottom plate 32. Thus, the plate thickness (t2) of the bottom plate 32 is the thinnest (t2 <t1), and the plate shape is provided with a gradient.
As shown in FIG. 8, the both edges of the receiving plate 30 in the width direction are groove-shaped surrounded by the contact surface 30 a of the receiving plate 30, the pair of side plates 31 a and 31 b, and the pair of opposing plates 33 a and 33 b. Adapter holding portions 34a and 34b are formed.

Further, as shown in FIG. 11, the rib plate 11 protrudes along the longitudinal direction of the center in the width direction on the back surface 30 b of the receiving plate 30 of the adapter portion 27 and is spaced apart in the longitudinal direction of the rib plate 11. In addition, a pair of touch plate side brackets 13 in which pin holes 12 are formed are provided.
When the main body portion 26 is attached to the adapter portion 27, first, the held main body portion is opened from the opening portion 27 a in a state where the back surface 28 a of the contact main body portion 28 is in contact with the contact surface 30 a of the receiving plate 30 of the adapter portion 27. 29a and 29b are fitted into the adapter holding portions 34a and 34b. The main body 26 is detachably held on the adapter 27 by the lower end of the contact main body 28 coming into contact with the bottom plate 32 of the adapter 27.

As shown in FIG. 7, the contact surfaces 28b of the pair of touch plates 25, 25 arranged on the inner side surfaces 3a, 3a facing the pair of arms 3, 3 have a predetermined radius of curvature in a direction away from the back surface 30b. It is formed as a circular arc shape protruding at R. Further, the thickness shape in the longitudinal direction of the touch plates 25, 25 is a gradient shape in which the thickness of the back surface 30b and the contact surface 28b gradually decreases as it goes from one end to the other end in the longitudinal direction.
The adapter contact surface according to the present invention corresponds to the contact surface 30a, and the adapter back surface according to the present invention corresponds to the back surface 30b.

Next, the effect of the coil lifter 24 of the third embodiment will be described.
In the coil lifter 24 of the third embodiment, the thickness shape of the touch plate 25 is the same as the touch plate 7 of the first and second embodiments. The thickness of the back surface 30b and the contact surface 28b gradually increases from the upper end to the lower end. The gradient shape becomes thinner. Therefore, since the contact surface 28b is sufficiently separated from the winding deviation M protruding from the opening peripheral edge of the inner diameter hole Ch of the metal band coil C, it is possible to prevent the occurrence of the ear folding due to the contact with the winding deviation M.
The touch plate 25 according to the third embodiment includes a main body portion 26 having a contact surface 28b and an adapter portion 27 that is supported by the arm 3 while detachably holding the main body portion 26. Since the main body part 26 is a lightweight object, when a part of the contact surface 28b of the main body part 26 comes into contact with the metal band coil C and wears, the worn main body part 26 is removed from the adapter part 27 and a new main body part 26 is removed. Can be easily attached to the adapter portion 27, so that the running cost can be reduced.

Further, the touch plate 25 of the third embodiment has a plate shape in which the receiving plate 30 of the adapter portion 27 is inclined, but the contact main body portion 28 of the main body portion 26 has the same cross-sectional shape (arc surface shape) in the longitudinal direction. It is formed with. Therefore, the contact main body portion 28 does not have to be formed in a shape having a gradient in the longitudinal direction, and thus the manufacturing cost of the touch plate 25 of the third embodiment can be reduced.
Similar effects can be obtained even when the pair of touch plates 25, 25 of the third embodiment are applied to the coil lifter 21 of the second embodiment shown in FIG.

[Main Body of Fourth Embodiment Constructing Touch Plate]
Next, FIG. 12 shows the main body 35 of the fourth embodiment that constitutes the touch plate 25 shown in the third embodiment. The main body part 35 is detachably held by the adapter part 27 constituting the touch plate 25 of the third embodiment.
The main body portion 35 of the fourth embodiment is fixed to the kamaboko portion 36 in which the arc-shaped contact surface 36a is formed with the same cross section in the longitudinal direction, and the back surface 36b of the kamaboko portion 36. And a flat plate 37 provided with projecting portions 37a and 37b from the good edge portion.

The fixing method of the kamaboko portion 36 and the flat plate 37 is fixing by welding or fixing by screwing a bolt from the flat plate 37 to the kamaboko portion 36.
Then, similarly to the held main body portions 29a and 29b of the third embodiment, the projecting portions 37a and 37b of the flat plate 37 are fitted into the adapter holding portions 34a and 34b of the adapter portion 27, so that the main body portion 35 becomes the adapter portion. 27 is detachably held.
The held main body according to the present invention corresponds to the protruding portions 37a and 37b.
According to the main body portion 35 of the fourth embodiment, since the kamaboko portion 36 in which the arc-shaped contact surface 36a is formed with the same cross section in the longitudinal direction and the flat plate 37 are integrated, the touch plate is further provided. 25 can reduce the manufacturing cost.
Here, even if the touch plate 25 including the main body portion 35 of the fourth embodiment is applied to the coil lifter 21 of the second embodiment shown in FIG. 6, the same operational effects can be obtained.

DESCRIPTION OF SYMBOLS 1 Coil lifter 2 Lifter main body 3 Arm 3a Inner side surface 4 Drive part 5 Control part 6 Claw 7 A pair of touch plate 8 Back surface 9 Contact surface 10a, 10b Side surface 11 Rib plate 12 Pin hole 13 Touch plate side bracket 14 Vertical groove 15 Pin 21 Coil lifter 22 Touch plate sensor 24 Coil lifter 25 Touch plate 26 Main body portion 27 Adapter portion 27a Opening portion 28 Contact main body portion 28a Rear surface 28b Contact surface 29a, 29b Supported main body portion 30 Receiving plate 30a Abutting surface 30b Rear surface 31a, 31b Side plate 32 Bottom plate 33a , 33b Opposing plates 34a, 34b Adapter holding portion 35 Main body portion 36 Kamaboko portion 36a Contact surface 36b Back surface 37 Flat plate 37a, 37b Projection portion C Metal band coil M Unwinding R Radius of curvature Ct End surface Ch Inner diameter hole γ Gradient angle

Claims (10)

A lifter body suspended movably,
A pair of arms arranged in the lifter body;
A pair of claws provided in a direction facing each other at the lower part of the pair of arms;
A drive unit that moves the pair of arms toward or away from both end faces of the metal band coil; and
A pair of touch plates disposed on opposing surfaces of the pair of arms,
The contact surface that contacts the end surface of the metal band coil of the pair of touch plates is formed as an arc surface shape that protrudes toward the end surface in a plan view,
The thickness shape of the pair of touch plates is a gradient shape in which the thickness of the flat back surface extending in the vertical direction facing the pair of arms and the contact surface gradually decreases from the upper end to the lower end. Coil lifter characterized by being said.   The coil lifter according to claim 1, wherein a gradient angle of the contact surface with respect to the back surface of the pair of touch plates is set to 0.38 to 6.3 °.   3. The coil lifter according to claim 1, wherein chamfering is performed at an intersection between the contact surface and the side surface in the thickness direction of the pair of touch plates. The pair of touch plates includes a main body portion and an adapter portion that is detachably held by the main body portion and supported by the arm,
The main body is
The contact body is formed as an arcuate surface shape having the same cross section in the vertical direction, and a contact body portion in which the back surface of the main body is formed flat with respect to the contact surface;
A held main body formed on the periphery of the contact main body, and
The adapter part is
A flat adapter back surface extending in the vertical direction facing the pair of arms, an adapter contact surface that is the back surface of the adapter back surface, and the main body back surface of the contact main body part contacts, A backing plate that has a gradient shape in which the thickness of the adapter back surface and the adapter contact surface gradually decreases from the upper end toward the lower end;
An adapter holding portion that is formed on the periphery of the backing plate and detachably holds the held portion of the contact main body portion in a state where the back surface of the main body is in contact with the adapter contact surface. The coil lifter according to claim 1 or 2, characterized in that: The contact main body includes a kamaboko portion in which the contact surface is formed as an arcuate shape having the same cross section in the vertical direction, and a flat plate fixed to the back surface of the kamaboko portion, and is provided outside the periphery of the kamaboko portion. The protruding portion of the flat plate protruding in the direction is the held main body,
5. The coil lifter according to claim 4, wherein the adapter holding portion into which the protruding portion of the flat plate serving as the held main body portion is fitted is formed on a peripheral edge of the receiving plate of the adapter portion. A lifter body suspended movably,
A pair of arms arranged in the lifter body;
A pair of claws provided in a direction facing each other at the lower part of the pair of arms;
A drive unit that moves the pair of arms toward or away from both end faces of the metal band coil; and
A pair of touch plates disposed on opposing surfaces of the pair of arms;
A sensor that detects that the pair of arms have moved in a direction close to each other and the pair of touch plates has contacted the end face of the metal band coil;
A control unit that stops the driving unit when the sensor detects that the pair of touch plates are in contact with the end surfaces;
The contact surface that contacts the end surface of the metal band coil of the pair of touch plates is formed as an arc surface shape that protrudes toward the end surface in a plan view,
The cross-sectional shape in the vertical direction of the pair of touch plates gradually decreases as the thickness of the flat back surface extending in the vertical direction facing the pair of arms and the contact surface decreases from the upper end to the lower end. A coil lifter characterized by a gradient shape.   The coil lifter according to claim 6, wherein a gradient angle of the contact surface with respect to the back surface of the pair of touch plates is set to 0.38 to 6.3 °.   8. The coil lifter according to claim 6, wherein chamfering is performed at an intersection between the contact surface and the side surface in the thickness direction of the pair of touch plates. The pair of touch plates includes a main body portion and an adapter portion that is detachably held by the main body portion and supported by the arm,
The main body is
The contact body is formed as an arcuate surface shape having the same cross section in the vertical direction, and a contact body portion in which the back surface of the main body is formed flat with respect to the contact surface;
A held main body formed on the periphery of the contact main body, and
The adapter part is
A flat adapter back surface extending in the vertical direction facing the pair of arms, an adapter contact surface that is the back surface of the adapter back surface, and the main body back surface of the contact main body part contacts, A backing plate that has a gradient shape in which the thickness of the adapter back surface and the adapter contact surface gradually decreases from the upper end toward the lower end;
An adapter holding portion that is formed on the periphery of the backing plate and detachably holds the held portion of the contact main body portion in a state where the back surface of the main body is in contact with the adapter contact surface. The coil lifter according to claim 6 or 7, characterized in that: The contact main body includes a kamaboko portion in which the contact surface is formed as an arcuate shape having the same cross section in the vertical direction, and a flat plate fixed to the back surface of the kamaboko portion, and is provided outside the periphery of the kamaboko portion. The protruding portion of the flat plate protruding in the direction is the held main body,
10. The coil lifter according to claim 9, wherein the adapter holding portion into which the protruding portion of the flat plate serving as the held main body portion is fitted is formed on a peripheral edge of the receiving plate of the adapter portion.

Images