JPH039860Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention performs shearing and shaping on continuously fed metal plates by making a mold or shearing blade perform a predetermined relative movement. This invention relates to a continuous press processing device for metal plates.

<Prior art> Conventionally, as shown in FIG. 5, the punching device 13 is provided with a base 1 and a slide 2 that is vertically slidable on the upper side of the base 1, and the slide 2 is provided with a drive unit. (not shown) to move up and down. An upper shearing blade 3a is attached to the lower surface of the slide 2, and a lower shearing blade 4a is attached to the upper surface of the base 1. Reference numeral 5 denotes a thin metal plate having a thickness of about 2 mm, such as a wound strip of iron plate, aluminum plate, stainless steel plate, copper plate, etc. This thin metal plate 5 has its end pulled out as shown in the figure.
On the way, there is a roller leveler 6, and an upper shearing blade 3a and a lower shearing blade 4a of a feeding device 7 and a punching device 13 for the thin metal plate 5 provided after the roller leveler 6.
The winding reel 8 is passed through the winding reel 8 and wound around the winding reel 8. The thin metal plate 5 is intermittently fed out by the pulse motor 7a of the feeding device 7 rotating intermittently. Note that the reason why the thin metal sheet 5 is fed out intermittently is that the feeding of the thin metal sheet 5 is stopped when the thin metal sheet 5 is punched out by the upper shearing blade 3a and the lower shearing blade 4a of the punching device. This is to make the cut clean. but,
With such a punching device 13, the rotating shaft of the pulse motor 7a needs to repeat rotation and stop in order to intermittently feed out the thin metal sheet 5, so the number of times the thin metal sheet 5 is fed out per hour is increased. Therefore, the pulse motor 7a must be started and stopped suddenly. Therefore, there is a problem that the limit of this operation becomes the limit of the number of times the thin metal plate 5 can be punched out per hour.

An example of a punching device 14 that solves this problem is shown in FIG. 6. Two guide rods 9, 9 projecting vertically upward are provided on the upper surface of the lower shearing blade 4b attached to the upper surface of the base 1.
The guide rods 9, 9 are inserted into two through holes (not shown) provided in the upper shearing blade 3b attached to the lower surface of the slide 2. As a result, the lower shearing blade 4b can slide on the base together with the upper shearing blade 3b in the left and right directions in the figure, and the upper shearing blade 3b
can approach and separate from the lower shearing blade 4b. A rack 11 is provided on the left side surface of the lower shearing blade 4b with its longitudinal direction facing left and right, and a pinion 12 is engaged with the rack 11. This pinion 12 is coupled to a rotating shaft of a motor 10, and the rotating shaft of this motor 10 is rotated forward and reversed by a control unit (not shown) through the pinion 12 coupled to this rotating shaft. The rack 11, the lower shearing blade 4b and the upper shearing blade 3b
make a reciprocating motion in the left and right directions in the figure. Note that the metal thin plate 5 is continuously fed out at a constant speed to the right side of the figure by a feeding device 7b. Further, the rotational speed of the motor 10 is set so that the moving speed of the upper and lower shearing blades 3b, 4b in the right direction in the figure matches the speed at which the thin metal plate 5 is fed out.

When punching a thin metal plate 5 using this device 14, the upper and lower shear blades 3b and 4b are used to punch out the thin metal plate 5.
The thin metal plate 5 is punched out by moving the upper shearing blade 3b in the direction in which it is sent out and lowering the upper shearing blade 3b. Thereafter, the upper shearing blade 3b is raised, and when the upper shearing blade 3b is removed from the thin metal plate 5, the upper and lower shearing blades 3b and 4b are moved to the left side in the figure.
The thin metal plate 5 can be punched out by repeating this operation.

<Problem to be solved by the invention> However, with such a punching device, the thin metal sheet can be continuously fed out and punched, but the upper shearing blade and the lower shearing blade are rotated in the feeding direction of the thin metal sheet and vice versa. It is necessary to move it back and forth in the direction. In order to make this reciprocating movement smooth, it is necessary to reduce the deceleration just before stopping and the acceleration at the beginning of movement. Therefore, there is a problem that the upper limit of the number of reciprocating movements of the upper shearing blade and the lower shearing blade per hour becomes the limit of the number of punchings per hour.

The purpose of this idea is to increase the number of reciprocating movements of the mold and shear blade attached to the mounting part on a line in the feeding direction of the thin metal sheet, thereby improving the throughput of continuous press working of the thin metal sheet. do.

<Means for Solving the Problems> In order to achieve the above object, this invention includes a first sliding portion that is slidable in the feeding direction of the metal plate that is continuously fed out in a predetermined direction, and a second slide part provided on the first slide part so as to be slidable in a direction perpendicular to the plate surface of the metal plate coming from the metal plate; and a crank pin connected to the second slide part. A crankshaft is provided to rotate in a plane parallel to both the sliding direction of the first sliding part and the sliding direction of the second sliding part, and the first sliding part is rotated by the rotation of the crankshaft. and a mold or shearing blade attachment portion provided on each surface of the second slide portion that repeatedly approaches and separates; and a mold or shear blade attached to the attachment portions of the first and second slide portions. and a drive unit that rotates the crankshaft so as to rotate the crank pin at a circumferential speed that matches the feeding speed of the metal plate at least within a section where the metal plate is pressed.

<Function> In the continuous press machine configured as described above, the mold or shear blade attachment part of the second slide part (hereinafter referred to as the attachment part of the second slide part) is connected to the first slide part.
The first and second slide parts move in a direction opposite to the direction in which the metal plate is fed out, at a position farthest from the mold of the slide part or the attachment part of the shearing blade (hereinafter referred to as the attachment part of the first slide part). While the drive unit rotates the crankshaft 90 degrees, the mounting parts of the first and second slide parts both move in the opposite direction to the feeding direction of the metal plate, and the mounting part of the second slide part moves in the direction opposite to the feeding direction of the metal plate. 1. Move in the direction approaching the mounting part of the slide part. Furthermore, while the crankshaft rotates 90 degrees from this 90 degree rotated position, the first and second
While the attachment parts of the slide parts move together in the direction of feeding out the metal plate, the attachment part of the second slide part further moves in the direction approaching the attachment part of the first slide part, until it is closest to the attachment part of the first slide part. This will be a close position. Then, the attachment part of the second slide part is attached to the first
Until the metal plate reaches the position closest to the mounting portions of the slide portion, the metal plate is pressed by a mold or the like attached to each of the mounting portions. While the crankshaft further rotates 90 degrees from this rotational position, the mounting portions of the first and second slide portions move in the direction away from the mounting portion of the first slide portion. Both move in the direction of feeding out the metal plate. During this time, the mold etc. attached to the second slide part are removed from the metal plate. Furthermore, while the crankshaft rotates 90 degrees from this rotational position to the original rotational position, the mounting parts of the first and second slide parts both move in the opposite direction to the direction in which the metal plate is fed out, while The attachment portion of the second slide portion moves in a direction further away from the attachment portion of the first slide portion, and reaches a position farthest from the attachment portion of the first slide portion.

In this way, the crank pin is rotated at a circumferential speed that matches the speed at which the metal plate is sent out at a constant speed at least near the rotational position where the attachment portion of the first slide portion and the attachment portion of the second slide portion are closest to each other. By causing the drive unit to rotate the crankshaft in this way, the metal plate can be press-worked continuously.

<Example> The punching device 15 of one embodiment of this invention was
This will be explained in place of the conventional punching device 14 shown in the figure. 1 to 3 are diagrams showing a punching device 15 of this invention, and FIG. 4 is a diagram showing a thin metal plate 5 punched by this device. This punching device 15 punches out a thin metal plate 5 with a thickness of about 2 mm as shown in the conventional example,
As shown in FIG. 6, the thin metal plate 5 is, for example, a wound belt-like material, and when the end portion is pulled out, there is a roller leveler 6, a feeding device 7b for the thin metal plate 5, and a device 7b for feeding the thin metal plate 5, as shown in FIGS. 1 and 2. It is passed between the upper shearing blade 22 attached to the lower surface of the first slide section 21 of this punching device 15 shown in FIG. It's dark. The upper and lower shearing blades 22 and 32 attached to the first and second slide sections 21 and 31 are moved in a predetermined manner by a crankshaft 51 that is rotationally driven by the drive section 16. Punch out the thin metal plate 5.

As shown in the longitudinal cross-sectional side view of FIG.
The side portions 26 and 27 are provided with an upper beam 24 having a T-shaped cross section that connects the upper ends of the 23, and a lower beam 25 made of I-beam steel that connects the lower ends. 26 is the left side shown in FIG. 1, and 27 is the right side. Then, the left and right side portions 26,
A cylindrical body 28 having a rectangular cross section is provided between each of the beams 24, 24 on the upper side of the cylindrical body 27, and a mounting portion 2 of the upper shearing blade 22, which will be described later, is attached to the lower surface of this cylindrical body 28.
9 is provided. Reference numeral 30 in the figure is a trochanter.
They are provided on a total of four flat plates 41 that protrude in a direction parallel to 7. A total of eight trochanters 30 are provided, one at the top and one at the bottom of each flat plate 41. Four trochanters 30 provided at the bottom of each flat plate 41
supports the first slide section 21, and by rolling on the rails 43a provided on the base 42, the first slide section 21 is moved in the plane of the paper of FIG. It is slidable in the direction perpendicular to the The four trochanters 30 provided on the upper part of each flat plate 41 are such that when a force is applied to the first slide portion 21 in a lifting direction, the upper edges of the trochanters 30 touch the rails 43b provided on the base 42. abutting,
By rolling the roller 30 on this rail 43b, the first slide portion 21 is made slidable in a direction perpendicular to the paper surface of FIG.

In the second slide part 31, one rail 33 is provided in the vertical direction on the opposing surfaces of the two pillars 23 on the left side part 26 of the first slide part 21,
Each rail 33 has two sliding parts 3 at intervals.
4 is provided. These four sliding parts 34 are
They are connected by a flat plate member 35, and the flat plate member 35 is slidable in the vertical direction along the rail 33 by means of the four sliding parts 34. Similarly, one rail 33 is provided on each of the two columns 23 on the right side portion 27 of the first slide portion 21, and along this rail 33, a flat plate member 3
5 is provided so as to be slidable in the vertical direction. A cylindrical body 36 having a rectangular cross section is provided between the left and right flat plate members 35, and a mounting portion 3 of a lower shearing blade 32, which will be described later, is provided on the upper surface of this cylindrical body 36.
7 is provided. 38 shown in the figure is a rod-shaped body, and this rod-shaped body 38 is provided to protrude upward at right angles from the upper surface of the cylindrical body 36 of the second slide part 31. This rod-shaped body 38 is provided on the lower surface of the first slide part 21. It is inserted into a through hole 39 provided in the. By sliding this rod-shaped body 38 through the through hole 39, the lower shearing blade 32 can be accurately guided toward the upper shearing blade 22 side.

The crankshaft 51 consists of two crankshafts fixed to the base 42 such that the center axis intersects perpendicularly to a plane parallel to both the sliding direction of the first sliding section 21 and the sliding direction of the second sliding section 31. It is rotatably held by a bearing 52. A crank pin 54 is attached to this crankshaft 51 via an arm 53, and this crank pin 54 is connected to the lower part of the left side part 26 of the first slide part 21 and the right part
It is connected at two places at the bottom of 7.

The drive unit 16 is coupled to the left side of the crankshaft 51 via a speed reduction device 18, and is connected to the left side of the crankshaft 51.
This is a servo motor that rotates the motor. The speed of the drive unit 16 is controlled by a rotational speed control unit (not shown), so that the crank pin 54 is located near the upper end position when the upper and lower shear blades 22 and 23 punch out the thin metal plate 5. 25 is rotated so as to match the feeding speed of the thin metal plate 5, the crank pin 54 is at a rotational position other than near the upper end position, and the upper and lower shear blades 22, 23 are rotated.
crank pin 2 when it is detached from the thin metal plate 5
The circumferential speed of the thin metal plate 5 is accelerated, decelerated, or constant relative to the feeding speed of the thin metal plate 5.

Reference numeral 29 shown in the figure is a mounting portion of the upper shearing blade 22 provided on the lower surface of the cylindrical body 28 of the first slide portion 21. 37 is a cylindrical body 36 of the second slide portion 31
This is the attachment part of the lower shearing blade 32 provided on the upper surface of the .
The mounting portion 37 of the lower shearing blade 32 is attached to the upper shearing blade 32 by vertical sliding of the second slide portion 31.
It repeats approaching and separating from the mounting portion 29 of No. 2. In addition, this upper and lower shearing blade 2
2 and 32 are formed so that circular holes 17 can be made in both side edges of the thin metal plate 5, as shown in FIG.

In the punching device 15 configured in this way,
The thin metal plate 5 can be punched out in the following manner. Figure 3 shows the first and second slide parts 21, 31.
2 is an enlarged view of the upper and lower shearing blades 22, 32 attached to the holder, and the thin metal plate 5 of the material is continuously fed out at a constant speed from the left to the right in the figure by the feeding device 7b. Upper shear blade 22 as shown
is at position a, and when the lower shearing blade 32 is at the lower end position A farthest from the upper shearing blade 22, the crank pin 54 is at the lower end position shown in FIGS. 1 and 2. From this state, the drive unit 16 moves to the crankshaft 51.
The operation of each part during the rotation of 90 degrees is such that the trochanter 30 provided on the first slide section 21 rolls along the rail 43a, and the second slide section 31 connected to the crank pin 54 rotates together with the first slide section 21. Move to the left in Figure 2. At this time, the sliding part 34 provided in the second sliding part 31 rolls along the rail 33,
The lower shearing blade 32 of the second sliding part 31 moves upward in a direction approaching the upper shearing blade 22 of the first sliding part 21 . The locus of this movement is shown in FIG. 3, where the lower shearing blade 32 moves through B to position C, and the upper shearing blade 22 moves through b to position c at the left end. While the crankshaft 51 further rotates 90 degrees in the same rotational direction from this 90 degree rotated position,
While the upper and lower shearing blades 22 and 32 are both moving to the right in FIG. This will be position E. At this time, the position of the upper shearing blade 22 becomes e(a). The thin metal plate 5 is punched out before the lower shearing blade 32 crosses the upper shearing blade 22. crankshaft 5
1 further rotates 90 degrees in the same rotational direction from this rotational position, the upper and lower shearing blades 22 and 32 both move to the right in the figure, while the lower shearing blade 32 moves away from the upper shearing blade 22. , the position of the lower shearing blade 32 passes through F and becomes G, and the position of the upper shearing blade 22 passes through f and becomes G. During this time, the lower shearing blade 32 is removed from the thin metal plate 5. While the crankshaft 51 further rotates 90 degrees in the same rotational direction from this rotational position to the original rotational position,
While both the upper and lower shearing blades 22, 32 move to the left in this figure, the lower shearing blade 32 moves further away from the upper shearing blade 22, so that the position of the lower shearing blade 32 passes through H. The lower end position A is reached, and the position of the upper shearing blade 22 becomes a through h.

In this way, the upper and lower shearing blades 22, 32 repeat the relative movement, and as shown in FIG. 4, circular holes 17, 17, . In this embodiment, the drive unit 16 rotates the crank pin 54 at a circumferential speed equal to the feeding speed of the thin metal plate 5, so that the circular hole 17 is punched out with a pitch S. If you want to increase the pitch S, for example, set the circumferential speed of the lower shearing blade 32 in sections D, E, and F shown in FIG. ,G.
The speed of the drive unit 16 is controlled by setting the rotational speed control section so that the circumferential speed of the lower shearing blade 32 in the sections H, A, B, C, and D is slower than the feeding speed of the thin metal plate 5. Take control. In addition, if it is desired to make the pitch S of the circular hole 17 small, the circumferential speed of the lower shearing blade 32 in the sections D, E, and F should be made equal to the feeding speed of the thin metal plate 5, and ,
Lower shear blade 3 in sections G, H, A, B, C, D
The speed of the drive unit 16 is controlled so that the circumferential speed of No. 2 is faster than the feeding speed of the thin metal plate 5. Further, since the distance R between the crankshaft 51 and the crankpin 54 corresponds to the pitch S of the circular hole 17, the crankpin 54 is connected to the crankshaft 5.
By changing the arms 53, 53 attached to 1 to arms 53, 53 of a predetermined length, the pitch S can be made larger or smaller.

Note that the lower shearing blade 32 rotates at a peripheral speed equal to the peripheral speed of the crank pin 54, and this peripheral speed is set to a speed equal to the feeding speed of the thin metal plate 5. At the rotational positions before and after the upper end position A, the moving speed of the thin metal plate 5 in the feeding direction is slightly slower than the feeding speed of the thin metal plate 5. Therefore, in this rotational position, the lower shear blade 3
2 is punching the thin metal sheet 5, the thin metal sheet 5 is slightly slack between the feeding device 7b and the punching device 15, but as the crankshaft 51 rotates, the lower shearing blade 32 gradually descends and punches the metal thin sheet 5. Once removed from the thin metal plate 5, the thin metal plate 5 is wound up by the take-up reel 8, so that this slack disappears.

<Effects of the invention> Since the invention is configured as described above, the number of reciprocating movements per hour on the line in the feeding direction of the metal plate of the mold or shearing blade provided at the attachment part of the first and second slide parts. can be increased more than the latter of conventional punching equipment. This is because the conventional punching device moves the upper and lower shearing blades back and forth in a straight line, making it impossible to rapidly decelerate or accelerate the moving speed of the mold near the moving end. However, in the present invention, the mold etc. are reciprocated along the line in the above direction by circularly moving the crank pin, so that sudden deceleration and acceleration near the end of movement can be smoothed out. Therefore, it is possible to improve the throughput of press working of metal plates.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of an embodiment of the punching device according to this invention, Fig. 2 is a partially cutaway side view of the punching device of the same embodiment, and Fig. 3 shows the upper and lower shear blades of the same embodiment. FIG. 4 is a diagram showing a thin metal plate punched by the punching device of the same embodiment. FIG. 5 is a diagram showing a conventional punching device. FIG. 6 is a diagram showing a conventional punching device. It is a figure showing a punching device of. 5...Thin metal plate, 16...Drive part, 21...First slide part, 22...Upper shear blade, 29...Upper shear blade attachment part, 31...Second slide part, 3
2... Lower shearing blade, 37... Lower shearing blade attachment part, 51... Crankshaft, 54... Crank pin.

Claims (1)

[Scope of utility model registration request] a first sliding portion that is slidable in the feeding direction of the metal plate that is continuously fed out in a predetermined direction;
a second slide part provided on the first slide part so as to be slidable in a direction perpendicular to the plate surface of the metal plate sent out; and a crank pin connected to the second slide part. The first above
A crankshaft is provided to rotate in a plane parallel to both the sliding direction of the sliding part and the sliding direction of the second sliding part, and the rotation of the crankshaft causes the first sliding part and the above-mentioned The mounting portions of the molds or shearing blades provided on the respective surfaces where the second slide portion repeatedly approaches and separates, and the molds or shearing blades attached to the mounting portions of the first and second slide portions are made of metal. A continuous press working apparatus for metal plates, comprising: a drive unit that rotationally drives the crankshaft so as to rotate the crank pin at a circumferential speed that matches the feeding speed of the metal plate at least within a section where the plate is pressed.