JP2015112620A - Tension imparting device of metal plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact and inexpensively installable tension imparting device of a metal plate, without occupying a wide equipment space, without requiring electrical control and power, with a simple structure.SOLUTION: A tension imparting device 1 is provided on the metal plate insertion side in a metal plate processing device for processing the metal plate, while pulling in the metal plate, and comprises a base 5, a liftable movable body 6 arranged on it, an upper frame 7 above it, an elastic body 8 provided between the movable body and the upper frame and a parallel link mechanism 10 for forming the movable body as a part of the mechanism. The parallel link mechanism is a constitution capable of lifting the movable body 6 against energizing force of the elastic body by manual operation. The metal plate passes through a clearance between a base upper surface and a movable body under surface. When returning an attitude of the parallel link mechanism in its state, the movable body presses the metal plate between the base and itself by the energizing force of the elastic body, and imparts tension to the metal plate.

Description

  The present invention provides a metal plate tension applying device that is provided on a metal plate insertion side in a metal plate processing apparatus that processes a metal plate while pulling the metal plate, and applies tension to the metal plate by resistance to movement of the metal plate. About.

In various metal plate processing apparatuses that process a metal plate while drawing the metal plate, when it is not preferable that the metal plate is slack, the metal plate is tensioned to remove the slack.
Conventionally, as means for applying tension to a metal plate, as shown in FIG. 14 (a), for example, in the case of a metal plate processing apparatus 33 that processes the metal plate 2 with a pair of upper and lower rolls 33a and 33b, the upstream side thereof. The metal plate 2 is sandwiched between a pair of upper and lower drive pinch rolls 41 installed on the (metal plate insertion side) and the peripheral speed of the pinch roll 41 is made slower than the metal plate feed speed of the metal plate processing apparatus 33. There is a method (pinch roll method) for applying tension to the metal plate by control.

  Further, as shown in FIG. 14B, a driving bridle roll 44 is arranged below the non-driving rolls 42 and 43 before and after contacting the upper surface of the metal plate 2, and the metal plate 2 is moved by the bridle roll 44. As shown by the broken line, there is a method (briddle roll method) in which tension is applied to the metal plate by pushing it up from below.

  Although Patent Document 1 is a metal plate punching device, FIG. 6 of Patent Document 1 describes a technique for applying tension by a pinch roll method, and FIG. 9 also describes a technique for applying tension by a bridle roll method. .

Republished patent WO01 / 017710

  By the way, in order to improve the designability of a metal plate or to increase the strength, an uneven pattern is formed on the surface of the metal plate. Thus, the metal plate which formed the uneven | corrugated pattern on the surface is called what is called an embossed metal plate. This embossed metal plate is generally manufactured by forming a concavo-convex pattern on the metal plate by passing the metal plate between a pair of upper and lower embossing rolls having a plurality of convex portions on one side and concave portions corresponding to the other side.

  When manufacturing this type of embossed metal plate, especially when the thickness of the metal plate is thin, the embossing accuracy may be reduced due to fluttering or vibration when the metal plate is drawn between the embossing rolls. The obtained embossed metal plate has a quality problem that warpage in the longitudinal direction occurs and waves (so-called ear waves) are generated at both edges. For this reason, it is necessary to reduce the molding speed so as not to cause fluttering and vibration, which has been a factor that prevents the production efficiency from being increased.

  While examining the means for preventing the occurrence of the flutter and vibration, the inventors of the present application have studied variously whether the flutter and vibration can be effectively prevented by applying a tension to the metal plate. In such a study, not only can flicker and vibration be effectively prevented, but also a large equipment space is not required and the configuration is simple compared to the tension applying device using the pinch roll method or bridle roll method. We have gained knowledge of mechanisms that can be manufactured at low cost.

  The present invention has been made based on the above background, and is applicable to various cases in which it is desired to give an appropriate tension to a metal plate in a metal plate processing apparatus that processes the metal plate while pulling the metal plate, resulting in a deterioration in quality. And a metal plate tensioning device that can be installed at low cost without the need for electrical control and power, compact and large equipment space. The purpose is to provide.

According to a first aspect of the present invention for solving the above-mentioned problem, the metal plate is provided on the metal plate insertion side in a metal plate processing apparatus that processes the metal plate while pulling the metal plate, and the metal plate is subjected to resistance against movement of the metal plate. A tension applying device for the metal plate for applying tension,
A base having a flat upper surface through which the metal plate to be processed passes;
A movable body arranged on the base to be movable up and down;
An upper frame fixed to the base and positioned above the movable body;
As a means for applying a downward force to the movable body between the movable body and the upper frame, one or a plurality of elastic bodies arranged to urge the movable body downward;
A link mechanism having the movable body as a part of the mechanism,
The link mechanism is configured to move the movable body upward against an urging force of the elastic body by an operation of manually moving a part of the link mechanism directly or indirectly. It is possible to create a gap through which
By making the parallel link mechanism in a state in which its posture can return to the original state, the movable body directly or directly contacts the metal plate with the base by the urging force of the elastic body. It is characterized by being pressed through.

The invention according to claim 2 is provided on the metal plate insertion side in the metal plate processing apparatus that processes the metal plate while pulling the metal plate, and applies tension to the metal plate by resistance to movement of the metal plate. A tension applying device for a metal plate,
A base having a flat upper surface through which the metal plate to be processed passes;
A movable body arranged on the base to be movable up and down;
An upper frame fixed to the base and positioned above the movable body;
One or a plurality of elastic bodies arranged to bias the movable body downward between the movable body and the upper frame;
A link mechanism having the movable body as a part of the mechanism,
The link mechanism comprises a pair of left and right parallel link mechanisms provided on the left and right in the metal plate width direction, with the movable body as a part of the mechanism,
Each parallel link mechanism has a horizontal link parallel to the upper surface of the base at a position above the base, and at both ends between the horizontal link and the right side or the left side of the movable body at least at two front and rear sides in the metal plate passing direction. A vertical link of the same length and parallel to each other,
An operating portion for manually or integrally operating the left and right horizontal links of the pair of left and right parallel link mechanisms directly and indirectly;
The vertical link has a configuration in which a lower end portion end surface comes into contact with the upper surface of the base to form a cam action
A lower end portion end surface of the vertical link that functions as a cam surface in contact with the upper surface of the base by a first operation of operating the operation portion to move the left and right horizontal links integrally forward or backward in the metal plate passing direction. However, the movable body is moved upward against the urging force of the elastic body to generate a gap through which the metal plate can pass,
After the first operation, the movable body is lowered by its weight and the movable body is lowered by the second operation by operating the operation unit to change the posture of the parallel link mechanism back to the original state. The metal plate between the base and the base is pressed directly or via a contact member by the urging force of the elastic body.

A third aspect of the present invention relates to the tension applying device for the metal plate according to the first or second aspect,
A movable body raising / lowering guide is provided to guide the movable body so that it does not move back and forth in the metal plate passing direction but only moves up and down.

A fourth aspect of the present invention relates to the tension applying device for a metal plate according to any one of the first to third aspects,
While providing a plurality of holding portions for holding the elastic body in the upper frame and / or movable body in the width direction of the metal plate,
The elastic body is arranged in all the holding parts or in a selected part of the holding parts.

A fifth aspect of the present invention relates to the tension applying device of the metal plate of the fourth aspect,
The holding portion is a recess provided on the lower surface side of the upper frame and / or the upper surface side of the movable body and accommodating the upper end portion or the lower end portion of the elastic body.

A sixth aspect of the present invention relates to the tension applying device for a metal plate according to any one of the first to fifth aspects,
The elastic body is a coil spring.

Claim 7 is the tension applying device for a metal plate according to any one of claims 1 to 6,
As a means for applying a downward force to the movable body, a downward force based on the weight of the movable body is used instead of the biasing force of the elastic body.

Claim 8 is a tension applying device for a metal plate according to any one of claims 1 to 7,
The contact member is a roller mounted on the lower surface of the movable body and the upper surface of the base.

Claim 9 is the tension applying device for a metal plate according to any one of claims 1 to 8,
The metal plate processing apparatus to be applied is a metal plate processing apparatus for forming a concavo-convex pattern on the metal plate by passing the metal plate between upper and lower rolls each having a plurality of convex portions and a concave portion corresponding to the other. It is characterized by.

A tenth aspect of the present invention provides the tension applying device for a metal plate according to any one of the first to eighth aspects,
The metal plate processing apparatus to be applied has a plurality of forming stands arranged in tandem, and the metal plates that are continuously fed are sequentially bent and formed between the upper and lower forming rolls of each forming stand. It is a roll forming machine which shape | molds in the cross-sectional shape of this.

  According to the present invention, the movable body capable of pressing the metal plate is configured as a part of the link mechanism, and a part of the link mechanism is manually or indirectly moved to move on the base. The metal plate can be pressed by the movable body by means for applying a downward force to the movable body, and a resistance force due to the frictional force against the movement of the metal plate can be applied.

Thereby, tension | tensile_strength is provided to a metal plate and it can prevent that a metal plate drawn in a metal plate processing apparatus generate | occur | produces, for example, a flutter and a vibration.
Therefore, for example, when applied to an embossed metal plate manufacturing apparatus, it is possible to prevent the occurrence of fluttering and vibration of the metal plate, thereby preventing a reduction in embossing accuracy, and the obtained embossed metal plate It can prevent problems such as direction warping and the occurrence of ear waves at both edges, and can solve the problem of quality degradation to increase the feeding speed (working speed or forming speed) of the metal plate. It becomes possible, and manufacturing efficiency can be improved.

  In addition, the tension applying device of the present invention has an extremely simple structure as compared with the conventional pinch roll method and bridle roll method, does not require electrical control and power, is compact and does not occupy a large facility space, and is inexpensive. Can be installed.

  As described above, the tension applying device of the present invention, which is simple in structure, does not require electrical control and power, is compact and does not occupy a large facility space and is inexpensive, can easily and easily be used in various cases where it is desired to apply an appropriate tension to a metal plate. It is easy to install and has great practical advantages.

  Further, as means for applying a downward force to the movable body, an elastic body is arranged between the movable body and the upper frame fixed to the base and positioned above the movable body, and the biasing force of the elastic body Since the metal plate is pressed by the step, a stable pressing force can be applied to the metal plate.

  According to the tension applying device of the second aspect, since the parallel link mechanism is provided on both the left and right sides in the metal plate width direction as the link mechanism, the end surface of the lower end of the vertical link constituting the parallel link mechanism is made to function as a cam surface. When the movable body that presses the metal plate is lifted against its weight and the urging force of the elastic body, it can be lifted with a light force by the action of the cam surface, and it is possible to have a configuration that does not require power. It becomes.

  According to the third aspect, when the movable body is moved up and down by operating the parallel link mechanism, the movable body is guided by the movable body lifting guide and does not move back and forth, so that the elastic body is interposed between the movable body and the upper frame. Is suitable for the structure in which

  According to the fourth aspect, by arranging the elastic body in the selected holding portion among the plurality of holding portions arranged in the width direction of the metal plate, tension can be applied to a desired position in the width direction of the metal plate. it can. Thereby, it is possible to easily cope with the case where it is desired to change the tension applied to each position in the width direction of the metal plate.

If the holding part of the elastic body is a recess as in claim 5, the elastic body can be easily arranged between the movable body and the upper frame. Moreover, it is particularly suitable when a plurality of elastic bodies are located.
Further, if the elastic body is a coil spring as in the sixth aspect, the pressing force can be easily changed by replacing it with a coil spring having a desired elastic coefficient.
Further, the pressing force can be easily changed by changing the initial compression state of the coil spring.

  According to the seventh aspect, since the means for applying the downward force to the movable body is the downward force due to the weight of the movable body, an upper frame or the like is unnecessary, and the configuration of the tension applying device becomes extremely simple and can be manufactured at low cost. Moreover, the pressing force can be easily adjusted by placing or removing heavy objects on the movable body.

  According to the eighth aspect, since the abutting member that presses the metal plate is a roller, tension can be applied to the position of the roller by disposing a plurality of rollers at desired positions in the width direction of the metal plate. It is easy to cope with the case where the tension applied to each position in the width direction of the metal plate is to be changed.

  When applied to a metal plate processing apparatus for forming a concavo-convex pattern on a metal plate, a so-called embossed metal plate manufacturing apparatus as in claim 9, the structure is simple, no electrical control or power is required, and it occupies a large facility space with a compact The feature of the present invention that it is inexpensive is particularly effective.

As in claim 10, when the present invention is applied to a roll forming machine, for example, when a pocket wave is generated during the formation of a thin and light section steel having a wide cross section, a metal plate is tensioned to give a metal It is preferable to give an appropriate elongation to the plate since the generation of pocket waves can be effectively prevented.
Further, when the present invention is applied to a roll forming machine, it can be easily installed.
Moreover, it is also possible to apply when an edge wave is generated at the edge of the metal plate in the process of forming the metal plate into an arc shape by a roll forming machine in an electric resistance steel pipe manufacturing facility.

It is sectional drawing (AA sectional drawing of FIG. 2) of the tension | tensile_strength provision apparatus of the metal plate of one Example of this invention. It is a front view of the tension | tensile_strength provision apparatus of the said metal plate. It is a top view of the state which removed the upper frame of the tension | tensile_strength imparting apparatus of the said metal plate (plan view of the state where the vertical link erects). The figure which shows the state in which the vertical link inclines, the movable body descend | falls, and contacted the base upper surface in the tension | tensile_strength provision apparatus of said metal plate (The figure shown except the vertical link and movable body shown with the dashed-two dotted line in FIG. 1) ). FIG. 2 is a diagram showing a state in which the vertical link is in an upright position and the movable body is in the raised position in the above-described metal plate tension applying device (a diagram showing the vertical link and the movable body shown by solid lines in FIG. 1). 5A is a diagram showing a state in which the movable body is lowered by slightly inclining the vertical link from the state of FIG. 5 and the metal plate on the base is pressed by the urging force of the coil spring, and FIG. It is the figure shown as BB sectional drawing of FIG. It is CC sectional drawing of FIG. Sectional drawing (DD of FIG. 9 (a)) which shows the Example which provided the roller instead of the felt sheet | seat provided as an abutting member directly contact | abutted and pressed on a metal plate in said tension | tensile_strength provision apparatus of a metal plate. FIG. (A) is the front view of the tension | tensile_strength providing apparatus of the metal plate of FIG. 8, (b) is the figure which expanded and showed the one roller part in (a). FIG. 9 is a diagram for explaining a case where a part of a plurality of rollers arranged side by side is removed and used (in the illustrated example, the roller near the center in the metal plate width direction is removed and used). The other Example about a parallel link mechanism is shown, (A) is a figure corresponding to FIG. 1, (B) is a top view of the principal part. It is a figure which shows the state which installed the tension | tensile_strength providing apparatus of the said metal plate in the metal plate insertion side of the embossing stand. The metal plate inserted in the tension applying device of the metal plate of the present invention is explained to be applicable to both the case where the metal plate is a strip-like metal plate and the case where the metal plate is a cut plate metal plate. The figure in the case of supplying a strip metal plate continuously, (B) is the figure in the case of supplying a metal plate of a cut plate. A conventional method of applying tension to a metal plate will be described. (A) shows a pinch roll system and (B) shows a bridle roll system.

  Hereinafter, the form for implementing the tension applying apparatus of the metal plate of this invention is demonstrated with reference to drawings.

  1 is a cross-sectional view of a metal plate tensioning device 1 according to an embodiment of the present invention (cross-sectional view taken along line AA in FIG. 2), FIG. 2 is a front view thereof, and FIG. FIG. FIG. 4 is a view showing a state in which the vertical link 12 is inclined and the movable body 6 is lowered and is in contact with the base upper surface 5b in the tension applying device 1 (the vertical link (12) indicated by a two-dot chain line in FIG. 1 and the movable body). FIG. 5 is a diagram showing a state in which the vertical link 12 is upright and the movable body 6 is raised in the tension applying device 1 (the vertical link shown by a solid line in FIG. 1). FIG. 6 (A) and FIG. 6 (B) show that the movable body 6 is lowered by slightly tilting the vertical link 12 from the state of FIG. The figure which shows the state which pressed the metal plate 2 on the base upper surface 5b with force, FIG. 7 is CC sectional drawing of FIG.

  This metal plate tensioning device 1 is provided on the metal plate insertion side in a metal plate processing apparatus as shown in FIG. This is a metal plate tension applying device that applies tension to a metal plate by resistance to movement. In the following embodiments, a steel plate is assumed as the “metal plate”, but it is naturally possible to target a metal plate other than the steel plate.

  The metal sheet tension applying device 1 includes a base 5 having a flat upper surface through which a metal plate 2 to be processed passes, a movable body 6 disposed on the base 5 so as to be movable up and down, In the illustrated example, the upper frame 7 is fixed to the base 5 and positioned above the movable body, and the movable body 6 is disposed between the movable body 6 and the upper frame 7 so as to urge the movable body 6 downward. A plurality of coil springs (elastic bodies) 8 arranged in the metal plate width direction and a parallel link mechanism 10 having the movable body 6 as a part of the mechanism are provided. The parallel link mechanisms 10 are provided on both sides of the movable body 6, and the left and right parallel link mechanisms 10 are coupled to operate integrally as will be described later.

  In the following description, in some cases, the width direction of the metal plate (lateral direction in FIG. 2) is referred to as the left-right direction, and the direction orthogonal to the width direction (horizontal direction in FIG. 1), that is, the metal plate 2 The feeding direction is called the front-rear direction or the metal plate passing direction.

Side frames 9 are fixed to the left and right sides of the base 5, and a movable body raising / lowering guide 13 that guides the movable body 6 to move up and down without moving back and forth is fixed to the front and rear portions.
The upper frame 7 is fixed to the base 5 via the side frame 9.
The base 5 in the illustrated example has a rectangular flat plate shape as viewed from a thick upper surface, and the movable body 6 has a flat plate shape that is smaller than the base 5 as viewed from the thick upper surface.

  A plurality of recesses 6a for accommodating the lower ends of the coil springs 8 are formed at equal intervals in the left-right direction on the upper surface of a substantially central position in the front-rear direction of the movable body 6, and the movable body 6 is formed on the lower surface of the upper frame 7 A recess 7a for accommodating the upper end of the coil spring 8 is formed corresponding to each recess 6a on the body 6 side, and the coil spring 8 is movable by accommodating the upper and lower ends in the upper and lower recesses 6a, 7a. It is held between the body 6 and the upper frame 7. The upper and lower recesses 6 a and 7 a constitute a holding portion 17 that holds the coil spring 8.

The coil spring 8 can be easily disposed by the upper and lower recesses 6a and 7a, and is particularly suitable when a plurality of coil springs 8 are disposed.
In addition, the coil spring can be easily changed by replacing it with a coil spring having a desired elastic modulus, and the initial compression state of the coil spring can be changed by placing a spacer on the bottom of the recess. Since the pressing force can be easily changed even by changing it, it is suitable as an elastic body for applying an urging force to the metal plate.

  The parallel link mechanisms 10 on the left and right sides are respectively connected to the horizontal link 11 above the base 5 and parallel to the base upper surface 5b, and to the horizontal link 11 by pins 15a at two locations in the illustrated example in the metal plate passing direction. The vertical link 12 is parallel to each other and has the same length, and the right or left side of the movable body 6 is connected to the lower end of the front and rear vertical links 12 by a pivot pin 16. Thus, the right side surface portion and the left side surface portion of the movable body 6 constitute a part (link) of each of the left and right parallel link mechanisms 10.

  The left and right pins 15 a that connect the horizontal link 11 and the vertical link 12 on the right side and the left side of the movable body 6 are formed as ends of a connecting rod 15 that connects the left and right horizontal links 11. The left and right parallel link mechanisms 10 are coupled by the connecting rod 15 so as to move integrally.

  Further, the ends of the left and right horizontal links 11 on the metal plate insertion direction entrance side (left side in FIG. 1, lower side in FIG. 3) are connected by an operating rod 14. The operation bar 14 constitutes an operation unit for moving the left and right horizontal links 11 of the parallel link mechanism 10 together.

Felt sheets 21 and 22 that are elongated in the width direction of the metal plate as contact members that directly contact the metal plate at the substantially center portion in the front-rear direction of the lower surface of the movable body 6 and the substantially center portion of the upper surface of the base 5 in the front-rear direction. Is provided. In this embodiment, the movable body 6 and the base 5 press the metal plate with the metal plate sandwiched between the felt sheets 21 and 22, respectively. The felt sheets 21 and 22 are suitable when a metal plate whose surface is easily damaged is targeted, and is suitable when pressing the entire width direction of the metal plate.

  Each of the front and rear vertical links 12 in each of the left and right parallel link mechanisms 10 has a curved end surface, and is a plate cam that comes into contact with the upper surface of the base 5 and performs a cam action.

  That is, the curved surface of the lower end surface 12a that is always in contact with the base upper surface 5b of each vertical link 12 has the lowest position of the pivot pin 16 when the vertical link 12 is inclined forward as shown in FIG. When the lower surface of the movable body 6 comes into contact with the upper surface of the base and the vertical link 12 is erected as shown in FIG. 5, the position of the pivot pin 16 becomes the highest. The curved surface has a cam action that is larger than the maximum thickness of the metal plate.

  Therefore, the movable body 6 can be moved up and down by moving the horizontal link 11 in the front-rear direction and changing the inclination of the vertical link 12. In this case, the movable body 6 is guided by the front and rear movable body lifting guides 13 and simply moves up and down without moving back and forth. Further, in the parallel link mechanism 10, the portion of the vertical link 12 in which the lower end portion end surface 12 a is a cam surface in contact with the upper surface 5 b of the base 5 functions as a booster mechanism.

  If the movable body lifting guide 13 is not provided, the movable body 6 moves back and forth, and the coil spring 8 disposed between the movable body 6 and the upper frame 7 is inclined. Therefore, the movable body 6 does not move back and forth, so that the coil spring 8 is kept vertical.

  The above tension applying device 1 can be applied, for example, when it is installed on the metal plate insertion side of an embossing stand 33 as shown in FIG. 12 and tension is applied to the metal plate. The embossing stand 33 has upper and lower embossing rolls 33a and 33b having a concavo-convex pattern formed on the surface thereof, and the concavo-convex pattern is formed through the material metal plate 2 between the upper and lower rolls 33a and 33b.

  When the tension applying device 1 does not pass through the metal plate, the movable body 6 and the parallel link mechanism 10 are in the state shown in FIG. 4 (the state indicated by the solid line in FIG. 1). That is, the vertical link 12 of the parallel link mechanism 10 is inclined, and the movable body 6 is pushed down by its own weight and the urging force of the coil spring 8 and is in contact with the upper surface 5 b of the base 5. Note that the lower end portion end surface 12 a of the vertical link 12 is always in contact with the upper surface 5 b of the base 5.

  When inserting the metal plate, grasp the operating rod 14 attached to the horizontal link 11 of the parallel link mechanism 10 and pull it to the left in FIG. In this case, this is the first operation to move backward), and the inclined vertical link 12 of the parallel link mechanism 10 stands upright as shown in FIG.

  In this case, the pivot pin 16 is at a high position by the cam action due to the contour shape of the lower end end surface 12a of the vertical link 12, and the movable body 6 connected to the pivot pin 16 is lifted. Since the movable body 6 is restricted from moving back and forth by the movable body lifting guide 13, the movable body 6 moves only up and down as the horizontal link 11 moves in the front-rear direction.

  At this time, the gap h between the lower surface 6b of the movable body 6 and the upper surface 5b of the base 5 is larger than the plate thickness t of the material metal plate. In the state where the vertical link 12 is upright (upright), the vertical link 12 can be kept upright even if the downward biasing force of the coil spring 8 is applied.

  5, after a metal plate is inserted into the gap between the movable body 6 and the base 5, the operation rod 14 is lightly pushed to the right in FIG. 5 (this operation is based on the posture of the parallel link mechanism 10. 2), the vertical link 12 tilts forward as shown in FIG. 6 (a), and the movable body 6 has its own weight and the coil spring 8 The metal plate 2 having a thickness t on the base 5 is pressed down by being pushed down by the urging force. FIG. 6 (b) shows the state of FIG. 6 (a) in the BB cross-sectional view of FIG.

  When the metal plate 2 is fed into the embossing stand 33 in this state, it is pulled in by the upper and lower embossing rolls 33a and 33b, and embossing (uneven pattern) is formed to produce an embossed metal plate. In this case, a braking force (resistance force against movement) is applied to the metal plate by a frictional force generated when the metal plate 2 is pressed toward the base 5 by the movable body 6 of the tension applying device 1, and tension is applied to the metal plate. Is done.

  As described in the background art, the present invention was obtained by examining whether the metal plate fluttering and vibration generated when the embossed metal plate is manufactured can be prevented by applying tension to the metal plate. However, by applying tension to the metal plate with the tension applying device 1 described above, it is possible to effectively prevent the metal plate from fluttering or vibrating, thereby reducing the embossing accuracy. In addition, the obtained embossed metal plate can be prevented from warping in the longitudinal direction, and to the problem that ear waves are generated at both edges. Moreover, it becomes possible to raise the feeding speed (processing speed or shaping | molding speed) of a metal plate by solving those problems of quality reduction, and can improve manufacturing efficiency.

  In addition, the tension applying device of the present invention has an extremely simple structure as compared with the conventional pinch roll method and bridle roll method, does not require electrical control and power, is compact and does not occupy a large facility space, and is inexpensive. Can be installed.

  As described above, the tension applying device of the present invention, which is simple in structure, does not require electrical control and power, is compact and does not occupy a large facility space and is inexpensive, can easily and easily be used in various cases where it is desired to apply an appropriate tension to a metal plate. It is easy to install and has great practical advantages.

  In order to give the metal plate the tension necessary to prevent the metal plate from fluttering and vibrating, it is necessary to sufficiently increase the urging force of the coil spring 8 and considerably increase the pressing force by the movable body 6. Therefore, in order to lift the movable body 6 on the base 5 in the state of FIG. 4 against the urging force of the coil spring 8 and the weight of the movable body 6 itself as shown in FIG. is there. However, since the tension applying device 1 uses the parallel link mechanism 10 and lifts the movable body 6 by the cam action of the lower end portion end surface 12a of the vertical link 12 that functions as a booster mechanism, power is required. Instead, it can be easily lifted by a person's normal force.

Said tension | tensile_strength provision apparatus 1 is applicable to both the case where the metal plate inserted in the said tension | tensile_strength provision apparatus 1 is a strip | belt-shaped metal plate, and the case where it is a cut plate (cut plate metal plate).
In the case of application to an embossed metal plate manufacturing apparatus, FIG. 13 (a) is a diagram in the case of supplying a band metal plate continuously from a metal plate coil, and (b) is a case in which a cut metal plate is supplied. FIG.

  The embossed metal plate manufacturing apparatus 31 shown in FIG. 13 (a) has upper and lower embossing rolls 33a for supplying a raw metal plate 2 continuously supplied from an uncoiler 34 loaded with a metal plate coil 2 'through a non-driven guide roll 35. , 33b and continuously embossed, and cut into a desired length by a cutting machine 36. 37 is a step looper.

  The embossed metal plate manufacturing apparatus 32 in FIG. 13 (b) conveys the cut sheet metal plate 2 by the conveying table 38, supplies it to the embossing forming stand 33, and continuously draws it by the upper and lower embossing rolls 33a and 33b. Embossed into.

  In the above-described embodiment, the movable body 6 and the base 5 are configured to sandwich and press the metal plate via the felt sheets 21 and 22, but the tension applying device 1 'illustrated in FIGS. In addition, the metal plate may be sandwiched and pressed via rollers 41 and 42 attached to the lower surface of the movable body 6 and the upper surface of the base 5 as contact members that directly contact the metal plate. In the illustrated example, a plurality of rollers 41 and 42 are mounted at equal intervals in the width direction of the metal plate. The rollers 41 and 42 are actually exposed in the gap between the lower surface 6b of the movable body 6 and the upper surface 5b of the base 5 as shown in FIG.

Other parts are the same as those in FIG.
The felt sheet is easy to wear even if it is suitable for a metal plate whose surface is easily scratched. On the other hand, if the rollers 41 and 42 are used, the component life is long and can be used for a long time.

  In the case of a roller, by placing it at a desired position in the width direction of the metal plate, tension can be applied to the position of the roller, and when the tension applied to each position in the width direction of the metal plate is to be changed. Easy to handle.

  For example, as shown in FIG. 10, the rollers 41 and 42 on both sides in FIG. 9 can be removed and the metal plate can be pressed only by the rollers 41 and 42 at the center. In the illustrated example, the metal plate is a medium stretch material having a longitudinal strain at the center in the width direction in advance.

  In this case, for example, it may be adopted when forming a thin and light section steel having a wide cross section having bent portions on both sides of a flat portion (web) having a wide central portion. For example, when forming a thin and light-weight shaped steel having a wide cross section with a width-thickness ratio (ratio between the plate width W and the plate thickness t) of 150 or more (W / t> 150), for example, the strain in the longitudinal direction of the metal plate is wide. Form defects such as a so-called pocket wave in the flat part due to non-uniformity in the direction or a waist fold in the bent part are likely to occur, but the occurrence of such a shape defect can be prevented.

  In addition, in the roll forming machine in the ERW steel pipe manufacturing facility, the edge wave of the metal plate is caused by the longitudinal deformation at the edge of the metal plate during the process of forming the metal plate into an arc shape. However, it may be adopted to prevent the generation of such edge waves.

In the tension applying device 1 described above, the coil spring is used as an elastic body that biases the movable body 6 downward, but various elastic bodies can be used.
In the embodiment, the movable body 6 presses the metal plate via a felt sheet or a roller as a contact member. However, the movable body 6 may directly press the metal plate in some cases.

  Further, in the embodiment, as an operation unit that operates the parallel link mechanism 10, an operation rod 14 that connects the end portions of the left and right horizontal links 11 is provided, and the operation rod 14 is directly operated by a hand. Various other operation means can be employed. For example, a lever structure in which the operating rod 14 is connected to a lever perpendicular to the operating rod 14 may be employed.

The specific mechanism for moving the movable body 6 up and down by the parallel link mechanism is not limited to the configuration of the embodiment, and various configurations can be employed.
For example, the vertical link 12 is not limited to the two front and rear portions of the parallel link 11 in the metal plate passing direction, but may be a parallel link mechanism provided in the middle portion as well.
It is also conceivable that the left and right parallel link mechanisms 10 are not connected by the connecting rod 15 but are made independent parallel link mechanisms 10. Even in that case, the left and right parallel link mechanisms 10 can be caused to perform the same movement by moving the operating rod 14 back and forth.

  It is preferable that the movable body 6 only moves up and down. However, if the movable body 6 is allowed to move slightly back and forth, for example, by arranging the elastic body, the front and rear end faces of the movable body 6 are guided. It is also possible not to provide the movable body lifting guide 13. In this case, it is preferable to provide means for restraining the movable body 6 from moving back and forth to such an extent that the movable body 6 can move back and forth within the operating range of the parallel link mechanism 10. In this case, the movable body 6 moves up and down slightly to move up and down.

  Further, if the movable body 6 is allowed to move slightly back and forth, for example, as in the tension applying device 1 ″ shown in FIGS. It is also possible to extend the pins 16 outward and fit the extended end portions 16a into substantially arc-shaped cam grooves 20 formed on the inner surface of the side frame 9.

In this case, when the horizontal link 11 is moved back and forth, the extended end portion 16a of the pivot pin 16 that contacts the upper surface of the base and functions as a cam extends along the substantially arc-shaped cam groove 20 on the inner surface of the side frame 9. As the vertical link 12 changes its inclination, the height position of the pivot pin 16 changes according to the locus of the substantially arc-shaped cam groove 20, and the movable body 6 moves up and down.
In this case, since the movable body 6 moves up and down as the extended end portion 16a of the pivot pin 16 moves along the substantially arc-shaped cam groove 20, the movement locus of the movable body 6 is determined and a stable and smooth lifting operation is achieved. Done. Further, it can be said that the force for lifting the movable body 6 is slightly reduced because there is no resistance associated with restraining the forward / backward movement of the movable body 6 by the movable body lifting guide 13.

1, 1 ', 1 "Metal plate tensioning device 2 Metal plate (metal plate)
5 Base 5b Base upper surface 6 Movable body 6a Recess 6b Movable lower surface 7 Upper frame 7a Recess 8 Coil spring (elastic body)
9 Side frame 10, 10 'Parallel link mechanism 11 Horizontal link 12 Vertical link 12a Lower end part end surface (cam action surface)
13 Movable body lifting guide 14 Operation rod (operation part)
DESCRIPTION OF SYMBOLS 15 Connecting rod 15a Pin 16 Pivot pin 17 Holding | maintenance part 21,22 Felt sheet | seat 31,32 Embossing metal plate apparatus 33 Embossing stand 33a, 33b Embossing roll 41, 42 Roller

Claims (10)

A tension applying device for the metal plate that is provided on the metal plate insertion side in the metal plate processing apparatus that processes the metal plate while pulling the metal plate, and applies tension to the metal plate by resistance to movement of the metal plate. There,
A base having a flat upper surface through which the metal plate to be processed passes;
A movable body arranged on the base to be movable up and down;
An upper frame fixed to the base and positioned above the movable body;
As a means for applying a downward force to the movable body between the movable body and the upper frame, one or a plurality of elastic bodies arranged to urge the movable body downward;
A link mechanism having the movable body as a part of the mechanism,
The link mechanism is configured to move the movable body upward against an urging force of the elastic body by an operation of manually moving a part of the link mechanism directly or indirectly. It is possible to create a gap through which
By making the parallel link mechanism in a state in which its posture can return to the original state, the movable body directly or directly contacts the metal plate with the base by the urging force of the elastic body. A tension applying device for a metal plate, wherein the device is pressed through a metal plate. A tension applying device for the metal plate that is provided on the metal plate insertion side in the metal plate processing apparatus that processes the metal plate while pulling the metal plate, and applies tension to the metal plate by resistance to movement of the metal plate. There,
A base having a flat upper surface through which the metal plate to be processed passes;
A movable body arranged on the base to be movable up and down;
An upper frame fixed to the base and positioned above the movable body;
One or a plurality of elastic bodies arranged to bias the movable body downward between the movable body and the upper frame;
A link mechanism having the movable body as a part of the mechanism,
The link mechanism comprises a pair of left and right parallel link mechanisms provided on the left and right in the metal plate width direction, with the movable body as a part of the mechanism,
Each parallel link mechanism has a horizontal link parallel to the upper surface of the base at a position above the base, and at both ends between the horizontal link and the right side or the left side of the movable body at least at two front and rear sides in the metal plate passing direction. A vertical link of the same length and parallel to each other,
An operating portion for manually or integrally operating the left and right horizontal links of the pair of left and right parallel link mechanisms directly and indirectly;
The vertical link has a configuration in which a lower end portion end surface comes into contact with the upper surface of the base to form a cam action,
A lower end portion end surface of the vertical link that functions as a cam surface in contact with the upper surface of the base by a first operation of operating the operation portion to move the left and right horizontal links integrally forward or backward in the metal plate passing direction. However, the movable body is moved upward against the urging force of the elastic body to generate a gap through which the metal plate can pass,
After the first operation, the movable body is lowered by its weight and the movable body is lowered by the second operation by operating the operation unit to change the posture of the parallel link mechanism back to the original state. A metal plate tension applying device, wherein the metal plate between the base and the base is pressed directly or via a contact member by an urging force of an elastic body.   3. The tension applying device for a metal plate according to claim 1, further comprising a movable body lifting guide for guiding the movable body to move up and down without moving back and forth in the metal plate passing direction. While providing a plurality of holding portions for holding the elastic body in the upper frame and / or movable body in the width direction of the metal plate,
The tension applying device for a metal plate according to any one of claims 1 to 3, wherein the elastic body is arranged in all the holding portions or in a selected part of the holding portions.   The said holding | maintenance part is a recessed part which accommodates the upper end part or lower end part of the said elastic body provided in the lower surface side of the said upper frame, and / or the upper surface side of the said movable body. Metal plate tensioning device.   The tension applying device for a metal plate according to any one of claims 1 to 5, wherein the elastic body is a coil spring.   The metal plate according to any one of claims 1 to 6, wherein the means for applying a downward force to the movable body is a downward force based on the weight of the movable body instead of the biasing force of the elastic body. Tensioning device.   The tension applying device for a metal plate according to any one of claims 1 to 7, wherein the contact member is a roller mounted on a lower surface of the movable body and an upper surface of the base.   The metal plate processing apparatus to be applied is a metal plate processing apparatus for forming a concavo-convex pattern on the metal plate by passing the metal plate between upper and lower rolls each having a plurality of convex portions and a concave portion corresponding to the other. The tension applying device for a metal plate according to any one of claims 1 to 8. The metal plate processing apparatus to be applied has a plurality of forming stands arranged in tandem, and the metal plates that are continuously fed are sequentially bent and formed between the upper and lower forming rolls of each forming stand. The metal sheet tension applying device according to any one of claims 1 to 8, wherein the metal sheet tension applying device is a roll forming machine that forms the cross-sectional shape of the metal plate.

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