KR20140055333A - Hand bender for plate - Google Patents

Abstract

The present invention relates to a hand plate bender. According to the present invention, the plate bender comprises: a base block having a press die fixed thereto; a movable block having a press blade and a lifting shaft fixed thereto; an upper block which has the lifting shaft penetrating thereinto to be slid and has one end part of a supporting shaft fixed thereto; posts which connect the base block and the movable block and has springs wound therearound; and a shaft fixing part having the supporting shaft, the lifting shaft, and a knob fixed thereto. According to the present invention, the hand plate bender can be easily and efficiently used by a beginner when manufacturing a laboratory or pilot sized base die or frame used for various small or subminiature devices, a small or subminiature electric electronic mechanism, an object of metalwork, or a metal sculpture, and can conveniently and easily bend a small or subminiature metal piece or metal plate at a predetermined angle to have a V or U shape or a concave groove shape and to be continuously stepped. Therefore, the hand plate bender can have high work efficiency, be easily carried out by having a compact structure, and have the high credibility of operation resulted from few malfunction.

Description

HAND BENDER FOR PLATE

The present invention relates to a plate manual bender, and more particularly, to a plate manual bender, and more particularly, to a plate manual bender, and more particularly, to a plate manual bender, A small or very small metal plate or a piece thereof can be easily and easily bent at a desired angle at a desired angle in the production of a base or a frame structure or an intermediate assembly of a hybrid composite device in these fields or a metal craft or a metal molding, , U-bending, or concave groove bending process.

Generally, bending of a metal plate refers to a bending operation by plastic deformation, which is a permanent deformation that can not be recovered by applying a force exceeding an elastic limit to the metal material. The steel plate, copper plate, brass plate, Of course, certain plastics are also used, which can be machined without heating, and can be machined to exact dimensions and shape in a short time.

Apparatus for bending a plate is called various names such as a bending machine, a bending machine, a bender, a folding machine and the like, and these are mostly used as industrial or industrial medium and large machines, And is driven by a power source.

However, since the medium and large-sized machinery driven by such a power source is not generally suitable for bending a small or very small metal plate, it is necessary to use a triangular prism or the like in advance to manufacture a laboratory or pilot- A long groove is formed at a bending portion of a metal plate having a small or very small size, and then a metal block having right-angled corners is hung on the metal block with a wooden hammer, while being angled with the naked eye and bending, or two nipper or finers (pinchers) to hold one end and fix it while holding the other end.

This purely manual operation of bending the metal plate at a predetermined angle is not only a very troublesome operation requiring a lot of labor and time but also a work requiring a considerable degree of skill, There is a problem that it is not easy to work.

There have been proposed several manual plate bending machines which can be used in a work site requiring a small-scale metal plate bending operation instead of a large scale in the past. However, all of these plate bending machines are made of a metal plate material having dimensions of at least several tens of centimeters to several meters The present invention relates to a structure having a fixed die for bending a metal plate and a bending bar coupled to a long lever to be pivotally movable, wherein the long lever connected to the bending bar is pivoted downward or upward at a predetermined angle The metal plate is bent at a predetermined angle, so that it is not a structure that can easily and easily bend a small or very small metal plate at a predetermined desired angle.

Therefore, it is necessary to manufacture a base or frame such as a laboratory or pilot scale mechanical or chemical device or a precision electric or electronic device, or to manufacture a small or micro electric or electronic mechanical device, or to produce a metal artifact, There has been a need in the art to develop an efficient plate manual bender that is easily and effectively used in the production of sculptures.

It is therefore a first object of the present invention to provide a base or frame for use in a variety of miniature or micro miniature devices of laboratory or pilot scale or to easily and effectively manufacture small or miniature electromechanical devices, To provide an efficient plate manual bender that can be used.

A second object of the present invention is to provide a plate manual bender capable of easily and easily performing a V-folding, U-folding, or concave groove bending process at a desired angle at a desired small or small metal plate or metal piece .

A third object of the present invention is to provide a plate manual bender capable of easily performing a continuous multi-step bending operation for one metal plate.

A fourth object of the present invention is to provide a compact plate manual bender which is compact and has a compact structure, has little fear of failure, and has high operating reliability.

According to a preferred embodiment of the present invention, a base block is provided with a recess formed at the center of the upper surface and a press die fixed to the recess. A column installed at both ends of the base block; A movable block having a long recess formed at the center of the bottom surface, a press blade fixed to the recess, a movable block coupled to one end of the lifting shaft at a central portion thereof and slidable along the column; An upper block having one end fixed to the one end of the support shaft in a slot penetrating through the through hole at the center so as to be slidable and adjacent to the up / down shaft; A spring wound on the outer periphery of the column between the upper block and the moving block; A shaft fixing part fixed at a position adjacent to the other end of the supporting shaft and the other end of the elevating shaft; And a knob coupled to the other end of the connecting bar, the one end of which is coupled to the shaft fixing part. When the knob is lifted upward, the other end of the supporting shaft coupled to the shaft fixing part And the movable block coupled to the one end of the movable block moves upward while pressing the spring along the column as a result of the vertically upward movement of the lifting shaft, When the knob is lowered gradually downward, the support shaft returns vertically, and at the same time, the support shaft is returned to the upright shaft The moving block coupled to the one end of the moving block moves downward while receiving the spring force of the spring along the column And as a result, the press blade coupled to the moving block moves downward, so that the plate to be bent is press-bent between the die press and the press blade with a predetermined force.

According to another preferred embodiment of the present invention, the upper end of the press die is formed into a V-groove of 90 °, and the lower end of the press blade is inserted into the V- A plate manual bender is provided which is formed from an acceptable 60 degree wedge.

According to another preferred embodiment of the present invention, the upper end of the press die is formed as a U-groove, and the lower end of the press blade is accommodated in the U-groove. A plate manual bender formed of a protruding portion is provided.

According to another preferred embodiment of the present invention, the upper end of the press die is formed as a groove, and the lower end of the press blade is engaged with the concave There is provided a plate manual bender which is formed by a rectangular protrusion that can be accommodated in the groove.

According to another preferred embodiment of the present invention, the upper end of the press die and the lower end of the press blade are provided with a V-groove of 90 ° and a V-groove of 60 ° A bending press portion formed of a wedge of an angle; A U-shaped groove and a U-shaped protruding portion accommodated in the U-groove; There is provided a plate manual bender which is formed to include at least two optional bending press portions selected from a concave groove and a bending press portion including a rectangular protrusion that can be received in the concave groove.

According to another aspect of the present invention, a press die fixed to a concave portion of the base block and a press blade fixed to a concave portion of the moving block are provided in the above- There is provided a plate manual bender which is provided so as to be fixed and releasable by a plurality of fixing screws arranged on both sides of the base block and the moving block.

According to another preferred embodiment of the present invention, the one end of the elevation shaft is fixed in the elevation shaft fixing hole of the moving block and the other end is fixed to the shaft fixing portion. There is provided a plate manual bender in which one end of the support shaft is fixed in the slot in the upper block and the other end is fixed in the shaft assembly.

According to another aspect of the present invention, there is provided a plate manual bender in which a height adjustable pressure regulator is provided on an upper block below the connection bar.

According to another aspect of the present invention, there is provided a plate manual bender in which fixing portions as stepped portions for fixing are formed at both ends of the base block.

The plate manual bender according to the present invention can be used as a base dyna frame for use in various apparatuses of a small or small size of a laboratory or a pilot scale, or as a beginner in the production of a small or tiny electric or electronic mechanical device, U folding, or concave groove bending at a desired angle at a desired angle, as well as a continuous multi-step bending (U-folding) process, as well as a small or small metal plate or metal piece can be easily and easily used, Since the work can be performed easily, it shows high work efficiency, and it is compact and compact structure, so that it is easy to carry and convenient, there is no fear of trouble, and high operation reliability is obtained.

1 is a perspective view of a plate manual bender according to the present invention.
FIG. 2A is a front view of FIG. 1, and FIG. 2B is an operational state view showing a state where a bending portion is spaced apart by raising the knob.
3A is a partial front view showing a case where the bending portion is constituted by a V-bending press portion, and FIGS. 3B to 3D are front views showing a bending state of the plate bent at different angles according to the degree of pressing force, respectively.
FIG. 4A is a front view showing a bending part formed by a U-shaped bending press part, and FIGS. 4B and 4C are front views showing a bent state of the plate bent at different curvatures according to the degree of pressing of a force, respectively.
FIG. 5A is a partial front view showing a case where the bending portion is composed of a groove bending press portion, and FIG. 5B is a front view showing a bending state of the plate bent in the form of a sphere.
Fig. 6 is an exploded assembly explanatory view of Fig. 1. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a plate manual bender 1 according to the present invention, FIG. 2a is a front view of FIG. 1, FIG. 2b is an operating state diagram for explaining an operating state, 6.

The main components of the plate manual bender 1 according to the present invention are a base block 2 and an upper block 4, a column 5 for supporting and fixing them, A movable block 3 capable of moving and a shaft fixing part 8 connected to the elevating shaft 6 and the supporting shaft 7, a knob 8b connected to the shaft fixing part 8, A press die 10 coupled to a base block 2 and a press blade 20 coupled to the movable block 3.

A recess 2a is formed in the center of the upper surface of the base block 2 and the press die 10 is fixedly secured to both sides of the recess 2a by a plurality of fixing screws 2b And can be unlocked and repositioned for replacement or movement of the press die 10 if necessary.

Fixed holes 2c are formed at both ends of the base block 2 so that pillars 5 to be described later are fixedly installed from the bottom by fixtures 2d such as fixing bolts.

Also, at both ends of the above-described base block 2, a fixing portion 2e as a step portion for fixing is formed and can be formed in a shape easy to firmly fix on a work frame or a work table (not shown).

The movable block 3 is formed with a recess (not shown) at the center of its bottom surface, and a press blade 20 is fixed to the recess (not shown). One end of the lift shaft 6 And the pillar 5 passes through the through holes 3a at both ends so that the pillar 5 can slide along the pillar 5 by the lifting and lowering of the lifting shaft 6. [

Similarly, in the recesses (not shown) of the movable block 3, the press blades 20 are firmly fixed by a plurality of fixing screws 3b from both sides thereof. If necessary, the press blades 20 are replaced Or can be unlocked and repositioned for location movement.

On the other hand, the elevation shaft 6 is firmly fixed by the key 6b through the key groove 3d in which one end of the elevation shaft 6 is located in the elevation shaft fixing hole 3c.

The upper block 4 has a through hole 4b at the center thereof and penetrates the lift shaft 6 such that the lift shaft 6 can slidably move and is supported in a slot 4c formed in a region adjacent to the lift shaft 6 One end of the shaft 7 is fixed.

Here, the fixing of the support shaft 7 is firmly fixed by the key 7b through the key groove 4d in which one end of the support shaft 7 is located in the long hole 4c.

Fixing holes 4a are formed at both ends of the movable block 4 so that fixing holes 4e such as bolts are passed through the fixing holes 5a formed in the upper ends of the columns 5, So that the base block 2 and the upper block 4 are firmly fixed to each other by the column 5.

Optionally, one side of the upper block 4 may be provided with a fixing hole 4f for adjusting the height of the pressure regulator 9, which will be described later.

A spring 5b is wound around the outer periphery of the column 5 between the upper block 4 and the movable block 3 so that the movable block 6 3) is raised to approach the upper block (4), a suitable repulsive force is applied to induce smooth and smooth operation, and also to help return to the position.

On the other hand, the other end of the supporting shaft 7 and the other end of the elevating shaft 6 are positioned adjacent to each other, and the key 7a and the key 6a are engaged with the shaft fixing portion 8 And a knob 8b is provided on the shaft fixing part 8 through a connecting bar 8a interposed therebetween.

The operating relationship of the plate manual bender 1 according to the present invention having the above-described structure will be described.

When the knob 8b is lifted upward to open a space between the press die 10 and the press blade 20 and to place a metal plate (not shown) for bending therebetween, The other end of the support shaft 7 coupled to the fixed portion 8 is tilted toward the other end of the lifting shaft 6 and approaches the one end of the lifting shaft 6 as the lifting shaft 6 moves vertically upward The combined movable block 3 moves upward while pressing the spring 5b along the column 5 and consequently the press blade 20 coupled to the movable block 3 moves upward .

Therefore, it becomes possible to position a plate to be bent (not shown) having a constant thickness between the die press 10 and the press blade 20.

Subsequently, when the knob 8b is gradually lowered downward to bend the plate (not shown) at a predetermined angle, the support shaft 7 is vertically returned, and at the same time, The movable block 3 coupled to the one end of the movable block 3 moves downward while receiving the elastic force of the spring 5b along the column 5 as a result of vertical downward movement, The press blade 20 is moved downward so that the to-be-bent plate (not shown) supported by the die press 10 is bent at a predetermined angle by the press blade 20 pressed by a predetermined force.

3A is a partial front view showing a case in which the bending portion constituted by the die press 10 and the press blade 20 is constituted by the V-bending press portion, and Figs. 3B to 3D are sectional views Fig. 3 is a front view showing a bent state of a plate bent at an angle; Fig.

3A to 3D, the V-groove angle a at the upper end of the die press 10 is formed at 90 degrees, while the wedge angle b at the lower end of the press blade 20 is formed at 60 degrees However, it should be understood that the present invention is not limited thereto and may be formed at various angles.

3B shows a case where the bending angle of the metal plate 30 is bent at an angle of 90 DEG which is the angle of the V groove of the upper end portion of the press die 10. In the state in which the above knob 8b is lifted upward, The metal plate 30 to be bent is positioned between the metal plate 10 and the press blade 20 and then the knob 8b is lowered down while checking with the naked eye to keep the degree of plastic deformation of the metal plate 30 low A bent state that exactly matches the V-groove angle of 90 占 of the press die 10 can be obtained.

3C shows a state in which the plastic deformation degree of the metal plate 31 is moderately maintained when the knob 8b is lowered downward with a slight force, so that the V-groove angle of 90 DEG of the press die 10 and the press- The bending state conforming to about 75 degrees, which is about the middle between the wedge angle of 60 degrees, can be obtained.

In this case, by providing a pressure regulator 9 on the upper block 3 as shown in Figs. 1, 2A and 2B and adjusting the height thereof, the degree of pressing force of the knob 8b More specifically, when the metal plate is sandwiched between the press die 10 and the press blade 20, since the metal plate itself has a thickness, the knob 8b is held in the horizontal fine state And therefore the fine height change of the pressure regulator 9 is very effective in keeping the bending angle of the metal plate constant.

However, the degree of height adjustment varies greatly depending on the type and thickness of the metal material of the metal plate, and is not uniformly determined.

In FIG. 3D, when the knob 8b is lowered and then pressed, the degree of plastic deformation of the metal plate 32 becomes the greatest, and a bent state that exactly matches the wedge angle of 60 ° of the press blade 20 can be obtained.

4A is a partial front view showing a case where the bending part composed of the die press 10 and the press blade 20 is constituted by a U-shaped bending press part, and Figs. 4B to 4D are views Is a front view showing a bent state of the plate.

4A to 4C, the U-shaped groove at the upper end of the die press 10 has a relatively large radius of curvature while the U-shaped wedge at the lower end of the press blade 20 has a relatively small radius of curvature, So that the U-shaped wedge can be received in the U-groove.

4B shows a case where the bending angle of the metal plate 33 is bent so as to conform to the radius of curvature of the U-groove of the upper end portion of the press die 10. In the state where the knob 8b is lifted upward, The metal plate 33 to be bent is positioned between the pressing blade 10 and the press blade 20 and then the knob 8b is lowered down while confirming with the naked eye to keep the degree of plastic deformation of the metal plate 33 low It is possible to obtain a bent state that exactly matches the U-groove shape of the press die 10.

Fig. 4C shows the degree of plastic deformation of the metal plate 34 being most severe when the knob 8b is lowered and then pressurized, so that a bent state conforming to the radius of curvature of the U-shaped wedge of the press blade 20 can be obtained .

On the other hand, in order to bend the intermediate radius of curvature between FIG. 4B and FIG. 4C, it can be effectively implemented by using the pressure regulator 9 as described above with reference to FIG. 3C.

5A is a partial front view showing a case where the bending portion composed of the press die 10 and the press blade 20 is constituted by a concave groove (groove) bending press portion, and Fig. 5B is a bending shape in the form of a concave groove Is a front view showing the bent state of the plate.

5B, when the knob 8b is lowered and then pressed, the metal plate 35 is plastically deformed between the concave groove formed in the upper end portion of the press die 10 and the rectangular projection portion in the lower end portion of the press blade 20 And is doubly bent in the form of a concave groove.

The upper end of the press die 10 and the lower end of the press blade 20 are respectively inserted into the V groove of 90 DEG and the wedge of the 60 DEG angle which can be accommodated in the V groove, A bending press section; A U-shaped groove and a U-shaped protruding portion accommodated in the U-groove; Two types arbitrarily selected from among the three types of the concave groove and the bending press section composed of the rectangular protruding portion that can be accommodated in the concave groove are disposed between the base block 2 and the movable block 3 Or it is also possible to arrange all of these three types together and to use them selectively according to the required bending form.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. This is also within the scope of the present invention.

1: plate manual bender according to the present invention
2: Base block
2a: recess 2b: fastening screw
2c: Fixing ball 2d: Fixing ball
2e:
3: movable block
3a: Through hole 3b: Fixing screw
3c: lifting shaft fixing hole 3d: key hole
4: upper block
4a: Fixing ball 4b: Through hole
4c: long hole 4d: key hole
4e: Fixture 4f: Fixed hole
5: Column
5a: Fixing ball 5b: Spring
6: lifting shaft 6a, 6b:
7: Support shaft 7a, 7b: Key
8:
8a: Connection bar 8b: Knob
9: Pressure regulator
10: press die 20: press blade
30, 31, 32: V-bending plate 33, 34: U-bending plate
35: concave groove bending plate

Claims (9)

A base block having a long recess formed at the center of the upper surface thereof and having a press die fixed to the recess;
A column installed at both ends of the base block;
A movable block having a long depression at the center of the bottom surface, a press blade fixed to the concave portion, and a pair of lifting and lowering shafts coupled to the center of the movable block so as to be slidable along the column;
An upper block having one end fixed to the one end of the support shaft in a slot penetrating through the through hole at the center so as to be slidable and adjacent to the up / down shaft;
A spring wound on the outer periphery of the column between the upper block and the movable block;
A shaft fixing part fixed at a position adjacent to the other end of the supporting shaft and the other end of the elevating shaft;
And a knob coupled to the other end of the connecting bar,
When the knob is lifted upwards, the other end of the support shaft coupled to the shaft fixing unit is tilted toward the other end of the lift shaft, and when the lift shaft is vertically upwardly moved, The movable block moves upwards while pressing the spring along the column and consequently the press blade coupled to the movable block moves upwards so that the plate to be bent can be positioned between the die press and the press blade,
When the knob is gradually lowered downward, the support shaft returns vertically and the movable block coupled to one end of the lift shaft moves vertically downward to move the lift shaft along the column, As a result, the press blade coupled to the movable block moves downward, so that the plate to be bent is press-bent between the die press and the press blade by a predetermined force
Plate manual bender (hand vender). The plate manual bender according to claim 1, wherein the upper end of the press die is formed with a V-groove of 90 °, and the lower end of the press blade is formed of a wedge having a 60 ° angle acceptable in the V-groove. The plate manual bender according to claim 1, wherein the upper end of the press die is formed as a U-groove, and the lower end of the press blade is formed of a U-shaped protrusion accommodated in the U-groove. The plate manual bender according to claim 1, wherein an upper end of the press die is formed as a groove and a lower end of the press blade is formed as a rectangular protrusion that can be received in the recessed groove. The press-forming apparatus according to claim 1, wherein the bending press portion comprises a V-groove having an angle of 90 ° and an upper end of the press die and a lower end of the press blade, respectively, and a wedge having a 60 ° angle acceptable in the V-groove; A U-shaped groove and a U-shaped protruding portion accommodated in the U-groove; And a bending press section made up of a rectangular protrusion that can be received in the concave groove and a concave groove formed in the concave groove and a bending press section made of a rectangular protrusion that can be received in the concave groove. The press machine according to claim 1, wherein a press die fixed to the concave portion of the base block and a press blade fixed to the concave portion of the movable block are provided on a plurality of fixing screws arranged on both sides of the base block and the movable block, A plate manual bender installed to be able to be locked and unlocked. 2. The apparatus according to claim 1, wherein one end of the elevating shaft is fixed in the elevating shaft fixing hole of the movable block and the other end is fixed to the shaft fixing portion, one end of the supporting shaft is fixed in the slot of the upper block, A plate manual bender with a key fixed to the shaft. The plate manual bender according to claim 1, wherein a height adjustable pressure regulator is provided on an upper block below the connection bar. The plate manual bender according to claim 1, wherein both base ends of the base block are formed with fixing portions as stepped portions for fixing.

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