JP2018518373A - Bending device - Google Patents

Abstract

The present invention relates to a bending apparatus, and includes an upper die and a lower die that are stacked on top and bottom of a base frame. The workpiece is fixed to a peripheral portion and a bent portion is formed on a part of the workpiece. A plurality of folding dies formed with a folding surface for forming and a guide hole formed at a lower portion of the folding die and spaced apart by a predetermined distance along the folding surface of the folding die. A receiving guide plate, a support body disposed on one side of the receiving guide plate and supporting a lower surface of the folding mold, and upward from one side of the receiving guide plate And a feed bar disposed on one side of the guide bar so as to be spaced apart from the guide bar is passed through the folding mold and engaged with the tip of the feed bar to be placed on one side of the feed bar. Along the guide bar by the lifting action of the feed cylinder arranged vertically Elevating means for conveying the upper mold vertically upward, folding forming means for pressing the workpiece while moving along the guide hole of the receiving guide plate, and forming a bent portion, and an upper part of the base frame And a transmission unit that moves the bending unit along the guide hole, and a controller that controls the elevating unit and the transmission unit.
Therefore, according to the present invention, the bending mold includes an upper mold and a lower mold that are separable from each other, and an upper jig and a lower jig are formed on the upper mold and the lower mold, respectively, and the workpiece is processed. There is an effect that workpieces having various heights can be simultaneously formed by selectively combining the upper jig and the lower jig in accordance with the height of the workpiece.
The intermediate part of the bending mold is formed with pressing means for pressing and fixing the work piece and forming a bent part of various shapes on the work piece. There is also an effect that a large number of bent portions having different bending rate radii can be formed by variously changing the shape together with the tool and the lower jig.
[Selection] Figure 1

Description

The present invention relates to a bending apparatus, and more specifically, a work piece is placed on a peripheral portion of a bending die disposed on an upper portion of a base frame and formed with a bending surface, and a lower portion of the bending die. The bending forming means for pressing the workpiece and forming the bent portion while moving along the guide hole of the receiving guide plate disposed on the receiving guide plate is provided by the transmission means disposed on the lower portion of the receiving guide plate. Bending work is automated by being actuated, and the bending molds are arranged in a large number of support columns projecting upward from the receiving guide plate, and are moved upward by lifting means and a lower mold fixed to a vertical frame. And an upper jig and a lower jig are engaged with the upper mold and the lower mold, respectively, so that a large number of workpieces with different heights can be formed simultaneously as well as workpieces with the same height. The bending means can be equipped with a number of forming cylinders. Said shaped cylinder portion is formed on Bending device enables forming a bent portion on the workpiece.

In general, a curtain rail is formed on which a curtain is fixed in order to block light incident through a window in the room or prevent a person from looking into the room from the outside.

This type of curtain rail is sometimes formed in a straight line, but in the case of large vehicles such as trucks, shower rooms, hospital admission rooms, paid study rooms In order to secure an independent space, a curtain rail having a curved portion is installed.

For this reason, the curtain rail is extrusion-molded into a metal and then bent according to the place to be installed. In order to bend the curtain rail into a desired shape, the inner side is usually on one side. A bending punch formed in a shape corresponding to the forming groove of the bending die is placed on the bending die formed with the bar-shaped curtain rail formed on the bending die formed with the forming groove recessed toward the forming groove. Bending is performed so as to fit the place where the curtain rail is to be installed.

However, when forming a bent portion that is symmetrical to each other using a conventional ordinary bending apparatus, after bending one side of the curtain rail, the other side is bent. There is a problem that it is very difficult to manufacture a curtain rail in which bent portions are uniformly symmetrical.

In particular, in the case of a conventional bending apparatus, since the operator manually operates the bending punch even after the bar-shaped curtain rail is installed on the bending die, the work efficiency is lowered. There is a problem in that the productivity of the curtain rail is lowered because the defect occurrence rate of the bent curtain rail is high and the operation speed is slow.

Such a problem is found not only in the curtain rail but also in the bending of metal pipes used in various fields.

In order to overcome the above-described problems, the present applicant has proposed Korean Patent No. 10-1017810 (“bending device”, hereinafter referred to as a pre-registered patent). The present invention relates to a bending apparatus that bends both ends of a workpiece so as to be symmetric, and a mounting groove that is disposed on an upper portion of a base frame and on which a bar-shaped workpiece is mounted has a peripheral edge. The first and second bent folding surfaces are formed so as to be symmetric with each other so as to form the first and second bent portions on both sides of the workpiece. A work table in which the first guide hole is formed at a predetermined distance along the first and second projecting bending surfaces of the folding mold, First and second forming the first and second bent portions by moving symmetrically along the first guide hole of the work table and pressing the exposed surface of the workpiece, respectively. And the first and second bending means are moved along the first guide hole. And motion means, to be composed of features.

When a workpiece is bent and formed using such a bending apparatus according to the present invention, the workpiece is formed so as to be symmetric when bending the workpiece, so the defect rate is low and the production speed is high. There is a merit that productivity is improved.

However, in the case of a pre-registered patent, it takes a long time to produce a large number of molded workpieces, and the height of the mounting groove cannot be adjusted. There is a problem that only a workpiece to be matched can be formed.

There is also a problem that a large number of bent portions having different bending rates cannot be formed on the workpiece.

Korean Registered Patent No. 10-1017810

The present invention devised to solve the above-described conventional problems is that a large number of folding molds are disposed on a support column projecting upward from the upper portion of the receiving guide plate, and the peripheral edge of each folding mold. A forming cylinder portion provided with a plurality of forming cylinders each provided with a pressing roller so as to press the workpieces placed on each is engaged with a movable member that moves along the guide hole of the receiving guide plate. The purpose is to enable a large number of workpieces to be formed simultaneously.

The folding mold includes an upper mold and a lower mold that are separable from each other, and an upper jig and a lower jig are formed on the upper mold and the lower mold, respectively, and the upper mold and the lower mold are formed according to the height of the workpiece. The purpose is to allow the workpieces having various heights to be simultaneously formed by selectively combining the jig and the lower jig.

The intermediate part of the bending mold is formed with pressing means for pressing and fixing the work piece and forming a bent part of various shapes on the work piece. The purpose is to make it possible to form a large number of bent parts with different bending radii by changing the shape of the tool and the lower jig in various ways.

The bending apparatus of the present invention for achieving the above-described object comprises an upper mold and a lower mold that are stacked on top of each other on the upper part of a base frame, and fixes a workpiece to a peripheral portion to form a part of the workpiece. A plurality of folding dies formed with a folding surface for forming the folding part, and formed at a lower part of the folding die, and separated by a predetermined distance along the folding surface of the folding mold. A receiving guide plate in which a guide hole is formed; a support body provided on one side of the receiving guide plate and supporting a lower surface of the folding mold; and one of the receiving guide plate A guide rod protruding upward from the side of the guide rod and a feed rod arranged spaced apart on one side of the guide rod are passed through the folding mold, engaged with the tip of the feed rod, and The guide rod is moved up and down by a feed cylinder arranged vertically on one side. Elevating means for vertically conveying the upper die along the upper side, bending means for pressing the workpiece while moving along the guide hole of the receiving guide plate, and forming the bent portion, and the base It is provided in the upper part of a flame | frame, The transmission means which moves the said bending forming means along the said guide hole, The control part which controls the said raising / lowering means and transmission means is provided, It is characterized by the above-mentioned.

The upper mold of the folding mold includes an upper plate and an upper jig that is bolted to the lower surface of the upper plate, and the lower mold is bolted to the lower plate and the upper surface of the lower plate. A flange having a bolt hole formed on an outer peripheral surface of the upper plate, and the feed bar is bolted to the flange. The support member of the column body is fixed by bolting.

Further, the receiving guide plate is pressed between the upper mold and the lower mold at the center portion of the folding mold so that the workpiece is removed from the folding mold during a bending operation. A pressing means for preventing separation is further provided.

On the other hand, the transmission means is provided at the center of the base frame, and is provided with a cylinder means for moving the piston back and forth, and a rack member provided at the end portion of the piston, and a rack is integrally provided on a pair of auxiliary rails. And a pinion rotatably mounted on a drive shaft provided between the base frame and the receiving guide plate, and a drive sprocket that rotates integrally with the pinion. The driven sprocket is interlocked with a number of driven sprockets arranged in one direction of the bending mold, and the driving sprocket and the driven sprocket are interlocked. And a fixed chain.

According to the present invention as described above, a large number of folding dies are arranged on the support column projecting upward from the upper part of the receiving guide plate, and the workpieces placed on the peripheral edge of each folding die are respectively pressed. A plurality of forming cylinders having pressing rollers are arranged so that a plurality of forming cylinders are engaged with a movable member that moves along the guide holes of the receiving guide plate to simultaneously form a large number of workpieces. There is an effect that can be.

The folding mold includes an upper mold and a lower mold that are separable from each other, and an upper jig and a lower jig are formed on the upper mold and the lower mold, respectively, depending on the height of the workpiece. There is an effect that workpieces having various heights can be simultaneously formed by selectively combining the upper jig and the lower jig.

The intermediate part of the bending mold is formed with pressing means for pressing and fixing the work piece and forming a bent part of various shapes on the work piece. There is also an effect that a large number of bent portions having different bending rate radii can be formed by variously changing the shape together with the tool and the lower jig.

The perspective view of the bending apparatus of this invention. The front view of the bending apparatus of this invention. The principal part perspective view of the bending apparatus of this invention. Sectional drawing of a bending forming means among the bending apparatuses of this invention. The operation | movement state figure of the raising / lowering means among the bending apparatuses of this invention. The operation | movement state figure of the raising / lowering means among the bending apparatuses of this invention. The side view of the bending apparatus of this invention. The operation | movement state figure of a transmission means among the bending apparatuses of this invention. The operation state figure of the bending device of the present invention. The operation state figure of the bending device of the present invention. The operation state figure of the bending device of the present invention.

FIG. 1 is a perspective view of the bending apparatus of the present invention, FIG. 2 is a front view of the bending apparatus of the present invention, FIG. 3 is a perspective view of the main part of the bending apparatus of the present invention, and FIG. FIG. 5 is a sectional view of a bending forming means of the bending apparatus of the present invention, FIGS. 5a and 5b are operation state diagrams of the lifting means of the bending apparatus of the present invention, and FIG. It is a side view of an apparatus.

As shown in FIGS. 1 to 4, the bending apparatus 1 of the present invention includes an upper mold 110 and a lower mold 120 that are stacked one above the other on the upper part of a base frame 10, and the workpiece 20 is fixed to the peripheral portion to fix the workpiece 20. A plurality of folding dies 100 in which a bending surface 101 for forming a bending portion 21 is formed on a part of the work piece 20, and a lower part of the bending dies 100 are formed. A receiving guide plate 200 having a guide hole 210 formed at a predetermined distance along the bending surface 101 and a lower surface of the bending die 100 are provided on one side of the receiving guide plate 200. A support body 310 provided with a supporting tool 310, a guide bar 410 protruding upward from one side of the receiving guide plate 200, and a feed bar spaced apart on one side of the guide bar 410. 420 is the bending die 1. The upper die 110 is moved along the guide rod 410 by the raising and lowering action of the feed cylinder 430 that is penetrated by 0 and engaged with the tip of the feed rod 420 and arranged vertically on one side of the feed rod 420. Lifting means 400 that conveys vertically upward, folding forming means 500 that presses the workpiece 20 while moving along the guide hole 210 of the receiving guide plate 200, and forms the bent portion 21, and the base A transmission unit 700 disposed on the frame 10 for moving the bending unit 500 along the guide hole 210, and a controller 900 for controlling the elevating unit 400 and the transmission unit 700. It is characterized by that.

At this time, as the workpiece 20, not only a bar-shaped curtain rail, but also pipes and metal wires that are applicable to various industries are applicable.

Further, the bending forming means 500 is disposed on one side or both sides of the base frame 10.

That is, the bend forming means 500 includes a first bend forming means 500a and a second bend forming means 500b that move symmetrically on both sides along the guide hole 210 of the receiving guide plate 200. Then, the bent portions 21 are formed on both sides of the workpiece 20.

Furthermore, the upper mold 110 of the bending mold 100 includes an upper plate 111 and an upper jig 112 that is bolted to the lower surface of the upper plate 111. The lower mold 120 includes the lower plate 121, A lower jig 122 that is bolted to the upper surface of the lower plate 121, and a flange 113 having a bolt hole 113 a formed on the outer peripheral surface is disposed on the upper surface of the upper plate 111. The rod 420 is bolted, and the support 310 of the column 300 is bolted and fixed to the lower surface of the lower plate 121.

Furthermore, a plurality of the bending dies 100 are formed in the vertical direction so that a large number of workpieces 20 can be simultaneously formed.

With the above-described configuration, the upper mold 110 engaged with the feed rod 420 is moved up and down by the feed cylinder 430 of the elevating means 400, and the lower mold 120 is moved by the support 310 of the support column 300. The upper mold 110 and the lower mold 120 are separable from each other by being fixed to the column body 300.

At this time, the feed cylinder 430 is formed by either one of a hydraulic or pneumatic cylinder.

Therefore, it is possible to replace the upper jig 112 and the lower jig 122 by loosening the bolts of the upper plate 111 and the upper jig 112, and the lower plate 121 and the lower jig 122.

That is, the bent portion 21 of the workpiece 20 is formed in the same shape as the curved surface formed in the stepped portion, and the upper jig 112 or the lower jig 122 is replaced to have various bending radiuses. The bent portion 21 can be formed.

In addition, the upper jig and the lower jigs 112 and 122 are formed so that peripheral portions protrude outward from the circumference of the upper plate 111 and the lower plate 121, A step is formed on one of the two, and the workpiece 20 is placed on the step.

Further, it is engaged with a plurality of connection support members 610 that are formed outside the bending means 500 and project outward from a connection plate 320 that is engaged with the upper surface of the support body 300. A guide member 600 that supports the upper end of the means 500 is further disposed.

Furthermore, the guide member 600 is formed of a plate material having the same bending rate radius as that of the bending surface 101 of the bending mold 100, and the connection support member 610 is a three bar-shaped object. One end is fixed to the connecting plate 320, and the other end is engaged with both sides and the middle of the guide member 600 and protrudes outward in a fan shape.

Furthermore, it is preferable that the support body 300 is formed symmetrically on both sides of the back surface of the folding mold 100 so as to support the folding mold 100.

That is, the support 310 of the support column 300 is formed so as to be able to support the folding die 100 by projecting forward and laterally about the folding surface 101 of the folding die 100.

At this time, the support 310 is a “convex” character, and is engaged by a method such as welding so as to protrude from one side of the support body 300 toward the bending die 100, and It is preferable that the pillars 300 are formed in the longitudinal direction corresponding to the number of molds 100.

In addition, the guide bar 410 and the feed bar 420 are disposed vertically above the receiving guide plate 200, and are formed through the folding mold 100, respectively. Three are formed.

At this time, as described above, the feed rod 420 is bolted to the flange 113 of the upper die 110, the support 310 is bolted to the lower portion of the lower die 120, and the upper die 110 is The elevating means 400 can move up and down along the guide bar 410 together with the feed bar 420.

On the other hand, as shown in FIGS. 5a to 5b, the elevating means 400 includes the first and second fixing plates 411 in which the leading ends of the feed rods 420 are integrally engaged, and the first and second fixings. A horizontal bar 413 having both ends engaged with the lower surfaces of the first fixing plate 411 and the second fixing plate 412 so that the plates 411 and 412 are connected to each other, and a lower portion on one side of the horizontal bar 413. And an elevating plate 414 to which the piston tip of the feed cylinder 430 is closely attached.

The first and second fixing plates 411 and 412 are formed in a “┐” shape, and the leading ends of the feed rods 420 are engaged with both ends and the bent portions by a method such as welding.

For this reason, when the piston 431 of the feed cylinder 430 is raised, the tip of the piston 431 presses the lifting plate 414 to move upward, and the horizontal bar 413 engaged with the lifting plate 414 is lifted. The upper and lower molds 110 and 120 are separated from each other by moving the first and second fixing plates 411 and 412, the feed rod 420 and the upper mold 110 vertically upward, thereby separating the upper jig. In addition, the lower jigs 112 and 122 can be replaced, and the workpiece 20 can be fitted and removed.

Furthermore, below, the structure of the said bending forming means 500 among the bending apparatuses 1 of this invention is demonstrated more concretely.

The bending forming means 500 protrudes upward from the base frame 10 and moves along the guide hole 210 of the receiving guide plate 200, and a movable member in which a plurality of horizontal plates 511 are integrally formed on the outside in the longitudinal direction. 510 and a forming cylinder 521 provided on the upper portion of the horizontal plate 511 and provided with a pressing roller 522 that presses and adheres the workpiece 20 fixed to the bending die 100 to an end portion thereof. A plurality of forming cylinder portions 520 formed in the longitudinal direction of the first and second movable members 510, and a first roller portion 540 that is in close contact with the upper surface of the base frame 10 is formed at the lower end of the movable member 510. A second roller portion 550 that is in close contact with the upper surface of the receiving guide plate 200 is disposed on the lower surface of the horizontal plate formed at the bottom of the horizontal plate 511. That.

For this reason, the weight of the bending forming means 500 is dispersed by the first and second roller portions 540 and 550 and can be moved stably.

Further, impact absorbing members 541 and 551 made of rubber or silicon are formed between the first roller portion 540 and the movable member 510 and between the second roller portion 550 and the horizontal plate 511, respectively. It is preferred that

On the other hand, the first and second roller portions 540 and 550 are engaged with a pair of cylindrical rollers 543 and 553 by roller shafts formed on the “convex” -shaped roller supports 542 and 552, respectively. The support members 542 and 552 are respectively axially coupled so as to be freely rotatable in the movable member 510 and the horizontal plate 511, so that the bending means 500 can move smoothly even in the curved portion.

At this time, the horizontal plates 511 are formed in the same number as the bending mold 100, and one or more forming cylinder portions 520 are disposed on the movable member 510.

That is, as shown in FIGS. 1 and 2, the molding cylinder part 520 is formed on one side of the first molding cylinder part 520a and the first molding cylinder part 520a formed integrally with the movable member 510. A second molding cylinder portion 520b disposed so as to be aligned with the first molding cylinder portion 520a is provided, and two bent portions 21 can be formed on the workpiece 20.

At the same time, the pressing roller 522 is formed at the tip of a roller fixing plate 523 that moves back and forth along roller feed rails 516 formed on the horizontal plate 511.

At this time, the pair of roller feed rails 516 are formed in a reverse “U” shape so as to face each other, and move forward and backward along the roller feed rail 516 with the roller fixing plate 523 fitted therein.

These first and second forming cylinder portions 520 a and 520 b sequentially press the workpiece 20 to form two bent portions 21 on a part of the workpiece 20.

At this time, the forming cylinder 521 is formed by a pneumatic cylinder.

In addition, the receiving guide plate 200 presses the workpiece 20 between the upper mold 110 and the lower mold 120 at the center of the folding mold 100 to perform the workpiece 20 during a bending operation. Is further provided. The pressing means 800 protrudes upward from the receiving guide plate 200, and a clamp 811 is formed on one surface thereof to form the cover. A pressing tool 820 that presses the workpiece 20, a pressing support rod 810 that is bolted, and the other surface of the pressing support rod 810, and the pressing support rod 810 is moved forward and backward so that the pressing tool 820 is moved to the cover. And a pressing cylinder 830 that is brought into close contact with the workpiece 20.

At this time, the pressing support rod 810 is formed by an H beam (H-beam), and the fastening tool 811 is configured such that the metal plate material through which the bolt hole 811a passes is vertically separated and one side of the pressing tool 820 is In the inserted state, tighten the nut by tightening the nut to the bolt. Needless to say, a bolt insertion hole 820a into which a bolt is inserted is formed in the pressing tool 820, and a plurality of the pressing support rods 810 are formed corresponding to the number of the folding dies 100.

Such a pressing tool 820 not only presses the workpiece 20 so as to be in close contact between the upper jig and the lower jig 122, but is either the upper jig 112 or the lower jig 122. Depending on the shape of the stepped portion formed on one side, the shape of the surrounding portion is changed by various pressing tools 820 to play a part of the workpiece 20.

At the same time, a plurality of cylinder receiving plates 812 on which the pressing cylinder 830 is placed are engaged with one side of the pressing support rod 810 by long bolts, and two or three of the pressing cylinders 830 are vertically separated. Preferably formed by a pneumatic cylinder.

At this time, a first feed roller 813 that is in close contact with the upper surface of the receiving guide plate 200 is disposed at the lower end of the pressing support rod 810, and a connecting bar having both ends fixed to the column body 300 at the upper end. A second feed roller 814 that is in close contact with the guide rail 816 that protrudes from the center of 815 toward the pressing support rod 810 is disposed, so that the pressing support rod 810 easily moves forward and backward.

At this time, the control unit 900 controls not only the lifting and lowering means 400 and the transmission means 700 but also the pressing means 800 that moves the pressing support rod 810 back and forth toward the folding mold 100.

At the same time, the controller 900 includes a number of buttons, which can be disposed on the floor surface by a method in which an operator presses the buttons with his / her foot.

On the other hand, FIG. 7 is an operation state diagram of the transmission means in the bending apparatus of the present invention.

As shown in FIG. 7, the transmission means 700 is disposed at the center of the base frame 10 and is disposed at the end of the piston 711 and the cylinder means 710 for moving the piston 711 forward and backward, and a pair of auxiliary rails. A rack member 720 in which a rack 722 is integrally disposed on 721, and a drive shaft 731 disposed between the base frame 10 and the receiving guide plate 200 are rotatably mounted on the shaft. A pinion 730 with which the rack 722 is engaged, a drive sprocket 740 that is rotated integrally with the pinion 730, and the drive sprocket 740 are interlocked with each other. The driven sprocket 750 is interlocked with the drive sprocket 740 and the driven sprocket 750, but the folding formation is performed on one side. A chain 760 which means 500 is fixed, characterized in that it is constituted by.

At this time, the cylinder means 710 is disposed at the center of the upper surface of the base frame 10 and has the piston 711 projecting forward, and is formed by a hydraulic cylinder. The pinion 730, the drive sprocket 740, the driven sprocket 750, and the chain 760 are formed on one side or both sides of the rack member 720.

That is, as shown in FIG. 7, first and second racks 722a and 722b are formed on one side of the pair of auxiliary rails 721, respectively, and the first and second racks 722a and 722b are formed on the base frame. 10 and the first and second drive shafts 731a and 731b disposed between the receiving guide plate 200 and the receiving guide plate 200 so as to be rotatable.

The pinion 730 is formed by first and second pinions 730a and 730b that mesh with the first and second racks 722a and 722b, respectively, and the drive sprocket 740 includes the first and second pinions. The first and second driving sprockets 740a and 740b are rotated together with the first and second driving sprockets 740a and 730b. The driven sprocket 750 is interlocked with the first driving sprocket 740a. A large number of first driven sprockets 750a disposed in the direction of the second and the second drive sprocket 740b are interlocked with the second driven sprockets 740b, but are disposed in the other direction of the folding mold 100. Sprocket 750b.

At the same time, the chain 760 interlocks the first drive sprocket 740a and the first driven sprocket 750a, and the first chain 760a to which the first bending forming means 500a is fixed on one side; The second drive sprocket 740b and the second driven sprocket 750b are interlocked with each other, and are constituted by a second chain 760b to which the second bending means 500b is fixed on one side.

At the same time, a large number of first and second driven shafts 751a and 751b are disposed behind the first and second drive shafts 731a and 731b, and the first and second driven shafts 751a and 751b The first and second driven sprockets 750a and 750b, which are linked by the first and second chains 760a and 760b, are rotatably provided on the shaft.

With this structure, when the first and second drive sprockets 740a and 740b rotate, the first and second driven sprockets 750a and 750b rotate together, and the first and second chains 760a, When the first and second chains 760a and 760b move in association with each other by fixing the fixing member 510 constituting the first and second bending forming means 500a and 500b to the 760b, The first and second bending means 500a and 500b move.

At the same time, upper and lower rollers 723 and 724 are respectively disposed on both sides of the upper and lower portions of the rack member 720, and the upper and lower rollers 723 and 724 are respectively placed so that the rack member 720 moves forward and backward horizontally. A lower rail 725 is disposed on the base frame 10 so as to be possible, and a first rail fixing plate 727 through which a piston 711 passes in front of the cylinder means 710, and forward from the first rail fixing plate 727. An upper rail 726 fixed at both ends is disposed between the second rail fixing plate 728 formed at a predetermined distance toward the front, and is rotated in close contact with the upper surface of the auxiliary rail 721. An auxiliary roller 729 is disposed on an auxiliary roller support 770 fixed to the base frame 10.

Due to the structure described above, the rack member 720 moves forward and backward stably in a state where it is kept horizontal, and the first and second racks 722a and 722b of the rack member 720 are moved by the auxiliary roller 729 to the first and first racks. The two pinions 730a and 730b can be moved forward and backward while maintaining a state where they are horizontally engaged with each other.

Hereinafter, the operation process of the bending apparatus 1 according to the present invention will be described.

At this time, the bending apparatus 1 according to the present invention will be described with reference to a process in which two bent portions 21 and 22 are formed on the workpiece 20.

8a to 8c are operation state diagrams of the bending apparatus of the present invention.

First, a bar-shaped workpiece 20 is fitted between the upper mold 110 and the lower mold 120 of the plurality of folding molds 100 fixed to the upper part of the receiving guide plate 200 of the base frame 10.

At this time, the workpiece 20 is placed on the peripheral edge of the lower die 120 with the upper die 110 moved upward, and the upper die 110 is moved downward so that the workpiece 20 is moved to the upper die 110. And fixed between the lower mold 120 and the lower mold 120.

At this time, the upper and lower jigs 112 and 122 are selectively replaced according to the height of the workpiece 20.

Further, the pressing tool 820 and the pressing support rod 810 bolted by the pressing cylinder 830 of the pressing means 800 formed in the middle of the receiving guide plate 200 are advanced so that the pressing tool 820 presses the workpiece 20. And fix.

When the cylinder means 710 of the transmission means 700 is driven in such a state, the rack member 720 formed integrally with the piston 711 moves forward while the piston 711 of the cylinder means 710 moves forward. The first and second pinions 730a and 730b with which the first and second racks 722a and 722b are engaged are rotated while the first and second racks 722a and 722b formed on both sides of the rack member 720 are advanced. Accordingly, the first and second drive sprockets 740a and 740b, to which the first and second pinions 730a and 730b are respectively coupled, are rotated.

Further, the first and second driven sprockets 750a and 750b linked by the first and second drive sprockets 740a and 740b and the first and second chains 760a and 760b rotate together, thereby the first and second driven sprockets 750a and 760b rotate together. And the second chains 760a and 760b move, and the first and second bending forming means 500a and 500b connected to the first and second chains 760a and 760b are guided holes 210 of the receiving guide plate 200. Move along.

At this time, the first pressing roller 521a formed at the tip of the piston moves while pressing the workpiece 20 while the piston of the first molding cylinder portion 520a advances simultaneously, and the bending mold 100 A bent portion 21 is formed on the workpiece 20 while passing through the bending surface 101.

Furthermore, the second pressing roller 521b moves while pressing the work piece 20 while the piston of the second forming cylinder portion 520b advances simultaneously, and passes through the bending surface 102 of the bending die 100. However, another bent portion 22 is formed on the workpiece 20.

When the cylinder means 710 of the transmission means 700 is reversely driven after such bending work is finished, the rack member 720 moves backward while the piston 711 of the cylinder means 710 moves backward, and the first and second The bending means 500a and 500b return to their original positions. That is, the first and second bending forming means 500a and 500b are driven in reverse to the forming process and return to the original state.

Accordingly, not only can a large number of workpieces 20 be simultaneously formed by a single bending operation, but the workpieces 20 having different heights can be simultaneously formed by replacing the upper jig and the lower jigs 112 and 122. Therefore, pipes and metal wires used in various industrial sites can be formed more easily and quickly.

The embodiment described above is only a description of the most preferable example of the present invention, and the present invention is not limited to the above-described embodiment, and does not depart from the technical idea of the present invention. It will be apparent to those skilled in the art that various modifications are possible.

Claims (14)

It consists of an upper mold (110) and a lower mold (120) that are stacked one above the other on the upper part of the base frame (10). A plurality of folding dies (100) formed with a folding surface (101) for forming the folding part (21);
A receiving guide plate (210) formed in a lower portion of the folding mold (100) and spaced apart by a predetermined distance along the folding surface (101) of the folding mold (100). 200),
A column body (300) disposed on one side of the receiving guide plate (200) and provided with a support tool (310) for supporting the lower surface of the folding mold (100);
A guide bar (410) projecting upward from one side of the receiving guide plate (200) and a feed bar (420) spaced apart on one side of the guide bar (410) are the folding mold. The guide rod (430) is lifted and lowered by a feed cylinder (430) vertically inserted on one side of the feed rod (420), which is penetrated by (100) and engaged with the tip of the feed rod (420). Elevating means (400) for conveying the upper mold (110) vertically upward along 410),
Bending means (500) for pressing the workpiece (20) while moving along the guide hole (210) of the receiving guide plate (200) to form the bent portion (21);
A transmission means (700) disposed at an upper part of the base frame (10) and moving the bending means (500) along the guide hole (210);
A controller (900) for controlling the elevating means (400) and the transmission means (700);
A bending apparatus comprising: The receiving guide plate (200) is bent by pressing the workpiece (20) between the upper mold (110) and the lower mold (120) at the center of the folding mold (100). 2. The bending apparatus according to claim 1, further comprising pressing means (800) for preventing the workpiece (20) from detaching from the bending mold (100) during the bending. The pressing means (800)
A pressing tool (820) that protrudes upward from the receiving guide plate (200) and has a clamping tool (811) formed on one surface thereof to press the workpiece (20) and a pressing support rod (810) that is bolted. )When,
A pressing cylinder (830) formed on the other surface of the pressing support rod (810) and causing the pressing support rod (810) to move forward and backward to bring the pressing tool (820) into close contact with the workpiece (20); ,
The bending apparatus according to claim 2, further comprising: The bending apparatus according to claim 1, wherein the bending forming means (500) is disposed on one side or both sides of the base frame (10). The upper mold (110) of the bending mold (100) includes an upper plate (111) and an upper jig (112) bolted to the lower surface of the upper plate (111). 120) includes a lower plate (121) and a lower jig (122) bolted to the upper surface of the lower plate (121). A bolt hole is formed on the outer surface of the upper plate (111). A flange (113) in which (113a) is formed is disposed, and the feed bar (420) is bolted to the flange (113), and the support (300) is supported on the lower surface of the lower plate (121). The bending device according to claim 1, characterized in that the tool (310) is bolted and fixed. The upper and lower jigs (112) and (122) are formed so that peripheral portions protrude outward from the upper plate (111) and the lower plate (121). 6. The bending apparatus according to claim 5, wherein a step is formed on any one of the jigs (122), and the workpiece (20) is placed on the step portion. Engage with a plurality of connection support members (610) formed outside the bending means (500) and projecting outward from a connection plate (320) engaged with the upper surface of the support (300). The bending apparatus according to claim 1, further comprising a guide member (600) for supporting an upper end of the folding forming means (500). The lifting means (400)
A first and a second fixing plate (411) in which the tip of the feed rod (420) is integrally engaged;
Horizontal bars whose opposite ends are engaged with the lower surfaces of the first fixing plate (411) and the second fixing plate (412) so that the first and second fixing plates (411) (412) are connected to each other. (413),
An elevating plate (414) engaged with a lower portion on one side of the horizontal bar (413) and to which a piston tip of the feed cylinder (430) is closely attached;
The bending apparatus according to claim 1, comprising: The bending forming means (500) includes:
A movable member (510) that protrudes upward from the base frame (10) and moves along the guide hole (210) of the receiving guide plate (200), and a plurality of horizontal plates (511) are integrally formed in the longitudinal direction. And a pressing roller (522) that is placed on the horizontal plate (511) and presses and adheres the workpiece (20) fixed to the folding mold (100) to the end. And a forming cylinder part (520) in which a plurality of forming cylinders (521) are formed in the longitudinal direction of the movable member (510),
A first guide roller (513) that is in close contact with the inner surface of the guide hole (210) is disposed on one side of the inner surface of the movable member (510), and the guide member is disposed on one side of the outer surface. The bending apparatus according to claim 1, wherein a second guide roller (514) is disposed in close contact with the inner surface of (600). A first roller part (540) that is in close contact with the upper surface of the base frame (10) is formed at the lower end of the movable member (510), and is the lowest part of the horizontal plate (511) of the movable member (510). 10. The bending apparatus according to claim 9, wherein a second roller portion (550) that is in close contact with an upper surface of the receiving guide plate (200) is disposed on a lower surface of the horizontal plate formed on the plate. The bending apparatus according to claim 9, wherein one or more of the forming cylinder portions (520) are disposed on the movable member (510). The transmission means (700)
Cylinder means (710) provided in the center of the base frame (10) for moving the piston (711) forward and backward;
A rack member (720) disposed at an end of the piston (711) and having a rack (722) integrally disposed on a pair of auxiliary rails (721);
A pinion (730) that is rotatably mounted on a drive shaft (731) provided between the base frame (10) and the receiving guide plate (200), and meshes with the rack (722). ,
A drive sprocket (740) rotated integrally with the pinion (730), respectively;
A number of driven sprockets (750) that are interlocked with the drive sprocket (740) but disposed in one direction of the folding mold (100);
A chain (760) in which the drive sprocket (740) and the driven sprocket (750) are interlocked, and the bending means (500) is fixed on one side;
The bending apparatus according to claim 1, comprising: The pinion (730), the driving sprocket (740), the driven sprocket (750) and the chain (760) of the transmission means (700) are formed on one side or both sides of the rack member (720). Item 13. The bending apparatus according to Item 12. Upper and lower rollers (723, 724) are respectively disposed on both upper and lower sides of the rack member (720), and the upper and lower rollers (723, 724) are respectively placed on the rack member (720). A lower rail (725) is disposed on the base frame (10) so that the base frame can move back and forth horizontally,
A first rail fixing plate (727) through which the piston (711) penetrates in front of the cylinder means (710) and a predetermined distance apart from the first rail fixing plate (727). An upper rail (726) fixed at both ends is disposed between the second rail fixing plate (728), and an auxiliary roller (729) that rotates in close contact with the upper surface of the auxiliary rail (721). The bending device according to claim 12, characterized in that it is arranged on an auxiliary roller support (770) fixed to the base frame (10).