JP2501295Y2 - Straightening device for linear members - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a straightness straightening device for a linear member, for example, before or after cutting of the linear member during or between the processing steps of the linear member. The present invention relates to a straightness correction device for a linear member.

(Prior Art) Generally, there is a large difference in the wire rod processing capability between two adjacent steps, such as a wire member processing step, for example, a heat treatment step of a wire rod for a rod or a steel cord and a wire drawing treatment step. In such a case, the long curved wire rod is divided and wound around a number of reels in a predetermined amount at the end of the previous process, and is temporarily stored. When wound in a predetermined amount on a reel, the long curved wire rod is wound around the previous reel, and then the end of the wire rod wound on the previous reel remains It is cut into a starting terminal that can be wound on the reel, divided into two, and temporarily fixed to each reel. After that, prior to the start of processing in the next step, the wire rod is welded at the end end of the wire rod of the previous reel and the start end of the wire rod of the next reel, if necessary, into a continuous wire rod, The method of supplying to the process is adopted.

Conventionally, when welding end portions of a wire wound on a reel, since the two end portions of the wire are wound around the respective reels and curved, the center lines of the respective end portions are aligned, that is, so-called cores. It is welded after being put out.
Conventional centering involves grasping the end of the wire and squeezing the bent wire for a specified length (usually 10 to 20 cm) using a jig or a tool such as pliers, or in the direction opposite to the bending direction. After bending and straightening the wire rod by a predetermined length to straighten it, each terminal portion is held by each holding portion at the welding position, and the cores are aligned and welded.

Alternatively, after the wire rod is gripped by the gripping portion of the welding machine, the wire rod is manually rotated and moved to be straightened and straightened, and then the cores are aligned and welded.

(Problems to be solved by the invention) However, the method of straightening these curved wire rods has a problem that a lot of labor and time are required for the straightening work.

There is also a problem that if the correction is insufficient and the core is misaligned, and if the core is misaligned, burrs generated during welding become large, which increases the labor and time for removing the burrs.

In addition, in the continuous treatment step of the wire rod and the like, it is necessary to perform the above-mentioned welding treatment within a limited time. Within such a limited time, the centering cannot be accurately performed, and a step is formed on the wire rod after welding, which causes a break in the subsequent machining of the drawn wire and the twisted wire. In addition, there is a drawback in that welding work within a limited time has a safety problem.

Generally, as a straightening method for a wire rod, a roller leveler, a rotary straightener, a wire strainer using a cylinder or a blade, and the like are known. However, these are continuous straightening of a continuous long wire rod, and there has been no example in the past of a straightening method of a limited length which becomes an end of the wire rod.

In view of this, the present invention allows a convex wire portion of a convex die and a concave surface portion of a concave die to approach and / or be separated from each other on a flat plate so that a curved wire material before cutting after reel winding is raised to a convex surface. After creating a wire with excellent straightness by sandwiching it between the concave part and the concave part and straightening it, the straight part of the wire is cut and stored, and the centering can be done accurately before welding. ,
An object of the present invention is to provide a straightness straightening device for a linear member, which does not cause a step after welding, can prevent wire breakage even in wire drawing and twisting, and can perform accurate centering easily in a short time without manual labor. To do.

(Means for Solving the Problems) A straightness straightening device for a linear member according to the present invention includes a flat plate on which a linear member curved in a certain direction is placed substantially flat, and a straight plate perpendicular to a front plane on the flat plate. A convex die having a strip-shaped convex surface portion that is curved in a direction opposite to the linear member in a direction parallel to the front plane and extends convexly with a substantially constant curvature, and the convex die surface facing the convex surface portion of the convex die. A concave die having a band-shaped concave surface portion that extends in a concave shape with the same curvature as the curvature, and a convex die and a linear member on which the concave die is placed on a flat plate are between the convex surface portion and the concave surface portion. And a pressure moving means for moving at least one of the convex mold and the concave mold so that the convex surface portion and the concave surface portion come into contact with and separate from each other, and when the convex surface portion and the concave surface portion are separated from each other. While allowing the front surface of the flat plate to be opened to allow placement or removal of the linear member, When the convex surface portion and the concave surface portion approach each other, the linear member is pressed in a state of being curved in the opposite direction to straighten the portion corresponding to the convex surface portion and the concave surface portion of the linear member.

Further, the convex die projects in a direction parallel to the front surface of the flat plate when the convex surface portion is separated from the concave surface portion so as not to hinder the opening on the front surface of the flat plate, and the convex surface portion is concave. A protruding plate facing the front surface of the flat plate through the linear member when approaching the front surface of the flat plate; By providing a sleeve portion that is located on both sides of the flat surface and that extends in the contact and separation direction and that has a horizontal plane that is at the same height as the front plane, the linear member is prevented from separating from the front plane of the flat plate, and the sleeve is It is preferable to be able to guide the convex mold or the concave mold on the side surface of the part.

Further, a cutting device for cutting the straightened linear member taken out from the flat plate and set is mounted on the same device and the same device by mounting the pressing movement means and the drive source in common. You may make it possible to cut a straightened portion of the linear member by a driving source so as to manufacture a straight end terminal and a straight terminal.

(Operation) The present invention is arranged such that a curved linear member placed on a flat plate is sandwiched therebetween, and a convex mold and a concave mold having a band-shaped convex portion and concave concave portion curved in a direction opposite to the linear member are mutually formed. Since the convex mold and the concave mold are brought close to each other and pressed by the pressure moving means, the central curved portion of the linear member in contact with the center of the convex surface of the convex mold has a convex surface. When the convex portion and the concave portion are pressed against each other by the portion, the linear member is bent in the opposite direction along the convex portion. When the convex surface portion and the concave surface portion come close to each other and are pressed, the linear member comes into close contact with each other from one end to the other end of the convex surface portion and the concave surface portion of each band-shaped mold, and the close contact and the curved linear shape. The member undergoes plastic deformation. When the convex surface portion and the concave surface portion of each mold are separated from each other after a predetermined time, the linear member between the molds is almost straightened.

At this time, since the linear member can be placed on the flat plate when the convex portion and the concave portion are separated from each other, and can be taken out after correction,
Only the portion of the curved linear member that is pressed by the convex portion and the concave portion can be straightened, and the other portion can be left curved. For this reason, even if the linear member has a continuous curved state, only a part of the part can be straightened, and by cutting the part after that, a straight end terminal and a straight terminal can be manufactured.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 8 are views showing an embodiment of a straightness straightening device for a linear member according to the present invention, which is used for a continuous linear member before cutting / welding the linear member between wire rod working steps. Here is an example.
As the type of linear member, SWRH specified in JIS G35061
This is the case when using 72A or similar steel.

First, the configuration will be described. 1 to 4,
Reference numeral 1 is a straightness straightening device for a linear member, and 2 is a cutting device. The cutting device 2 is a straightness straightening device 1 (hereinafter,
(It is simply referred to as a straightening device) and is provided so as to interlock with the straightening device 1.

The straightening device 1 has a flat plate 5 fixed to an upper plate 4 attached to the upper part of the support column 3, and the flat plate 5 is a substantially square central portion 5a.
And rectangular sides separated from the center on both sides of the center 5a
5b and. On the flat plate 5, there is a curvature in a substantially constant direction.
The wire 7, which is a linear member having a wire diameter of 4 mm and curved at T _W (1/600), is placed on a substantially flat surface.
And is connected to the next reel (not shown) and is continuous.

Reference numeral 9 denotes a convex mold, and the convex mold 9 is curved in a direction perpendicular to the front plane 5c on the flat plate 5 and parallel to the front plane 5c, and in a direction opposite to the wire 7, and has a substantially constant curvature T _M (1 / 200) has a strip-shaped convex surface portion 9a extending in a convex shape. The length L of the strip-shaped convex surface portion 9a is long enough so that the gripping portion for gripping the wire 7 and the welding portion for welding the wire 7 by the welding device during the later-described welding are straight.

Reference numeral 10 denotes a concave die, and the concave die 10 faces the convex surface portion 9a of the convex die 9 and has a strip-shaped concave surface portion 10a extending in a concave shape with the same curvature as the curvature T _M (1/200) of the convex surface portion 9a. Has a concave surface portion 10c and a concave surface portion 9a
Are provided on both sides of the wire 7. The bottom of the concave die 10 is a back surface that can slide on the front surface 5c of the flat plate 5.
10b is provided, while the front surface 5c and the back surface portion 10b are sliding, the convex surface portion 9a of the convex mold and the concave surface portion 10a of the concave metal mold face each other so that they can approach and separate so as to correspond to the central portion 5a. A recess 10c is provided. The side portion 10d of the concave die 10 is slidable by being guided by the side surfaces of the central portion 5a and the side portion (sleeve portion) 5b of the flat plate 5 so that the convex surface portion 9a and the concave surface portion 10a are smoothly separated and contacted. ing.

The curvature T _M of the convex surface portion 9a and the concave surface portion 10a is preferably adjusted so that the wire 7 is straightened depending on the wire diameter of the wire 7, the curvature T _W , the material, and the pressing strength of the concave mold 10 described later. It has been decided.

In FIG. 1, 12 is a moving means, and the moving means 12
Is an auxiliary block integrally fixed to the lower side of the concave mold 10.
13 is engaged and guided by the guide tube 14, and the convex surface 9a
It has a vertical bar 15 which can be moved almost vertically so that the concave surface 10a and the concave surface portion 10a move apart from each other. The central portion of the vertical bar 15 is pivotally supported by the pin 16 fixed to the column 3, and the lower portion of the vertical bar 15 is connected to the tip of the rod 19 of the air cylinder 18 fixed to the lower plate 17 of the lower portion of the column 3. There is. Air cylinder
When the convex surface portion 9a and the concave surface portion 10a come close to each other at the operation of 18, the convex surface portion 9a and the concave surface portion 10a approach each other at a predetermined processing strain rate, and the convex surface mold 9 and the concave metal mold 10 move to the wire
When sandwiching, the pressure setting device (not shown) applies a predetermined pressurizing pressure for a predetermined time.

As shown in FIG. 5, the cutting device 2 has two circular rod-shaped blade bodies 21 and 22 which are coaxially arranged, face each other and abut each other with a predetermined axial pressing force. Axial grooves 24A and 24B having a U-shaped cross section for holding the straightened wires 7 are provided on the upper part of the body, which is the outer peripheral part. The blade body 21 is fixed to the upper plate 4, and the blade body 22 is connected at its lower portion by a link mechanism 25 to a connecting pin 26 provided between the pin 16 engaging with the vertical bar 15 and the tip of the rod 19. . The blade body 22 is rotated about the axis of the blade body 22 via the link mechanism 25 by the operation of the air cylinder 18, and a shearing force is applied along the contact surface between the blade body 21 and the blade body 22 to form a groove. The wire 7 held in the groove 24A and the groove 24B can be sheared.

 Next, the operation will be described.

The wire 7 is processed in the previous step, and the final curved end portion 7a wound around the preceding reel 6 by a predetermined amount and the starting end portion 7b for winding on the next reel are shown in FIGS. As shown, it is placed substantially flat on the flat plate 5 of the straightness straightening device 1 for a linear member. Then the air cylinder
18 is operated, and the concave mold 10 is moved to the convex mold 9 via the vertical bar 15.
Move to the side at a predetermined speed. Central bending portion 7c of the wire 7
Is brought into contact with the center of the convex surface portion 9a of the convex mold 9, the wire 7 is deformed along the convex surface portion 9a at a predetermined deformation strain rate, and when the convex surface portion 9a and the concave surface portion 10a are closest to each other, the wire 7 is As shown in FIG. 6, the wire 7 is bent in the opposite direction. Then, it is pressurized with a predetermined pressure for a predetermined time. During this time, the wire 7 undergoes plastic deformation. When the concave die 10 is separated from the convex die 9, the pressing portion of the wire 7 is almost straightened as shown in FIG. 7 to obtain the straightened portion 7d having good straightness.
Then, the straightening portion 7d is taken out from the straightening device 1,
The blades 21 and 22 of the adjacent cutting device 2 are inserted into the grooves 24A and 24B and held.

The cutting device 2 operates the air cylinder 18 to shear and cut the wire 7 between the blade surfaces of the blade bodies 21 and 22.
An end 7a of the wire 7 on the side of the reel 6 and a start 7b of the next reel have straight ends, and are temporarily fixed to the respective reels, and the reels are stored.

In the next step, the processing of the reel 6 is started, and the end portion 7a of the reel 6 and the start portion 7b of the next reel are held by the terminal holding portion 31 of the welding device 30 shown in FIG.

Since the end portion 7a and the start end portion 7b of the wire 7 using the straightness straightening device 1 for a linear member according to the present invention are straightened straight by the straightening device 1, when the wire 7 is held by the terminal holding portion 31 of the welding device, The end portion 7a and the start end portion 7b of 7 have their respective cores aligned with each other, and there is no misalignment as in the conventional case, and automatic centering can be performed accurately. For this reason, even if automatic welding is performed, there is no step in the wire 7, and accurate welding with no core deviation can be performed. Therefore, in the next step, no wire breakage occurs even if wire drawing and twisting are performed.

Further, since the wire 7 can be automatically and accurately centered by the welding device and easily in a short time without manual labor, the productivity of processing can be greatly improved.

In the above embodiment, the case where the wire rod has a diameter of 4.0 mm has been described, but the present embodiment is not limited to this example, and the wire rod may have a diameter of 3.2 mm to 2.5 mm, or a rod. It may be wood. At this time, the curvature T _M of the die is preferably 150 mm to 110 mm, and the curvature T _M according to the wire diameter or the rod diameter is desirable.

Further, the convex mold 9 is provided with a protruding plate 9b protruding toward the concave mold 10 on the upper side of the convex surface portion 9a, and the wire 7 has the flat plate 5 and the protruding plate 9b.
It is preferable to intervene between and. This protruding plate
When the convex mold 9 and the concave mold 10 approach each other by the 9b, the wire 7 is stably straightened without separating upward between the convex surface portion 9a and the concave surface portion 10b.

Further, in the above-mentioned embodiment, the example in which the wire rod is used between the wire rod working steps has been described, but it goes without saying that the wire rod may be used in the wire rod working step.

(Effect) As described above, according to the present invention, the convex surface portion of the convex die and the concave surface portion of the concave die can be approached / pressurized or separated from each other on the flat plate, so that after reel winding is completed. Before cutting, the curved wire rod is sandwiched between the convex and concave parts to pressurize and straighten it to create a wire with excellent straightness, then cut the straight part of the wire and store it for welding. The centering can be accurately performed in the front, a step is not generated after welding, and the wire breakage can be prevented even in the wire drawing and twisting processes in the next step. In addition, accurate centering can be easily performed in a short time without manual labor, and productivity can be significantly improved.

[Brief description of drawings]

1 to 8 are views showing an embodiment of a straightness straightening device for a linear member according to the present invention. FIG. 1 is an overall front view of the device, FIG. 2 is an enlarged perspective view of an essential part thereof, and FIG. FIG. 4 is an enlarged perspective view of the convex mold, FIG. 4 is an enlarged perspective view of the concave mold, FIG. 5 is an enlarged view of a main part of the cutting device connected thereto, and FIGS. It is a principal part enlarged top view for doing. 1 ... Straightness straightening device for linear members, 5 ... Flat plate, 7 ...
Wire (linear member), 9 ... Convex mold, 10 ... Concave mold, 12
...... Pressure moving means.

Claims (4)

(57) [Scope of utility model registration request] 1. A flat plate on which a linear member curved in a certain direction is placed substantially flat, and a linear member which is curved in a direction perpendicular to a front surface of the flat plate and parallel to the front surface in a direction opposite to the linear member. A convex die having a strip-shaped convex surface portion that extends convexly with a constant curvature, and a concave metal having a strip-shaped concave surface portion that faces the convex surface portion of the convex die and that extends concavely with the same curvature. A mold, and the convex mold and the concave mold are arranged such that the linear member placed on the flat plate is located between the convex surface portion and the concave surface portion,
Providing a pressure moving means for moving at least one of the convex mold and the concave mold so that the convex part and the concave part are in contact with each other, and open the top surface of the flat plate when the convex part and the concave part are separated. The linear member can be placed or taken out, and when the convex surface portion and the concave surface portion approach each other, the linear member is pressed in a curved state in the opposite direction to press the convex surface portion and the concave surface portion of the linear member. A straightness straightening device for a linear member, which straightens a portion corresponding to. 2. The convex die protrudes in a direction parallel to the front plane of the flat plate to the extent that it does not hinder the opening of the flat plane on the front plane when the convex section is separated from the concave section. 2. The straightness straightening device for a linear member according to claim 1, further comprising a projecting plate facing the front surface of the flat plate through the linear member when approaching the concave surface portion. 3. A flat portion on the flat plate, a central portion having a front surface, and a convex portion and a concave portion of the central portion located on both sides with respect to the contacting / separating direction and extending in the contacting / separating direction. The straightness straightening device for a linear member according to claim 1 or 2, wherein a sleeve portion having horizontal surfaces of the same height is provided. 4. A cutting device for cutting the straightened linear member taken out from the flat plate and set, is mounted with the pressing moving means and the driving source in common. Straightening device for linear members.