JP2002307193A - Slide drive device of press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide drive device which eliminates disadvantages of the sinusoidal motion and the knuckle motion while having only advantages in a press of the same configuration. SOLUTION: This slide drive device comprises a connecting rod 4, a vertically moving slider 7 above a crank shaft 3, a drive link 9 with one end thereof connected to a small end part of the connecting rod 4 by a slider output pin 8, a toggle upper link 11 supported by a fixed supporting pin 10 with one end part thereof connected to the drive link by a drive output pin 12, and a toggle lower link 13 with one end thereof connected to the drive output pin 12 which is connected to a plunger 15 fixed to a slide 14 and movable along the perpendicular of the fixed supporting pin 10 by a connection pin 16. The drive link is oscillated in a range of 30-80 deg. with respect to the perpendicular and in a range of 2-35 deg. with respect to the perpendicular of the toggle upper link 11 while the connecting rod ratio is in a range of 4-8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide driving device for a small high-speed automatic press machine.

[0002]

2. Description of the Related Art A slide motion of a press machine includes:
There are sine motion of direct crank type, knuckle motion by toggle drive, and link motion using a link mechanism. The sinusoidal motion slides along a sinusoidal curve, and is suitable for high-speed operation because of its stability. However, there is a slight problem in the bottom dead center accuracy over time or short stop due to heat generation of the connecting rod, etc.In knuckle motion, the problem of sine motion, especially bottom dead center accuracy, is through the knuckle link between the crank shaft and the slide The solution is to solve the problem, but the movement near the bottom dead center becomes slow. In the link motion, the slide descends slowly in the work area and rises quickly, and the curve becomes asymmetric. That is, in the knuckle motion and the link motion, the movement near the top dead center becomes fast, and high-speed driving is difficult. Thus, each motion has advantages and disadvantages.

[0003]

For this reason, it is important to select a press machine with a motion that is optimal for each processing mode in the processing. For this purpose, it is necessary to prepare a press machine for each motion in advance. is there.

An object of the present invention is to solve such a problem by using a press machine having the same configuration to eliminate the disadvantages of sine motion and knuckle motion or sine motion and link motion, and to provide a slide drive device having only advantages. An object of the present invention is to provide a slide drive device that operates in two kinds of motions by exchanging a part of a part.

[0005]

According to a first aspect of the present invention, in a slide driving device for a press machine, a crank shaft rotatably provided on a frame of the press machine and a large end portion connected to an eccentric portion of the crank shaft. The connecting rods
A vertical moving slider guided vertically by a groove fixed to the frame above the crankshaft, and a pair of right and left ends connected by a small end of the connecting rod and a slider output pin of the vertical moving slider. And a pair of left and right toggle upper links, one end of which is rotatably supported by a fixed fulcrum pin provided at a symmetrical position of the frame, and one end of which is connected to the other end of the drive link by a drive output pin. A slide drive device for a press machine, comprising: a pair of left and right toggle-down links connected at one end to a drive output pin and at the other end to a slide and a connection pin provided on a slide. .

In this invention, the slide link is driven by a toggle link system.
8, within one revolution of the crankshaft, the drive output pin is set at 3
By swinging within the range of 0 to 80 ° and within the range of 2 to 35 ° outside the vertical line with the connecting pin as the base point, the slide can be moved up and down in a motion similar to a sine motion of a crank direct type. Can be moved. Therefore, high-speed operation is possible while maintaining good bottom dead center accuracy of the knuckle motion, and the number of components is minimized by a drive mechanism using two upper and lower toggle links.

According to a second aspect of the present invention, the small end of the connecting rod is connected to a slider output pin, and the small end of the connecting rod is connected to a slider input pin provided directly below the slider output pin on the vertical movement slider. The slide drive device for a press machine according to claim 1, wherein:

In this invention, by separating the pins of the vertical movement slider into the slider input pin and the slider output pin, in addition to the effect of the first aspect, the connecting portion is simplified, and maintenance and inspection are facilitated. Further, since the position of the crankshaft can be lowered, a more stable press machine can be obtained. In addition, the degree of freedom in designing a smaller rod ratio is increased.

According to a third aspect of the present invention, the link on the toggle is
2. A bell-crank link having a drive input pin provided diagonally below a slider output pin of a vertical movement slider, and the other end of the drive link is connected to the drive input pin. 3. A slide drive device for a press machine according to item 2.

[0010] In this invention, by forming the toggle upper link into a bell crank shape, in addition to the function and effect of claim 1 or 2, the load resistance is improved by shortening the distance between the left and right plungers. In addition, the arrangement of each link including the drive link can be adjusted to make the entire press machine compact.

According to a fourth aspect of the present invention, there is provided a second toggle upper link replaceable with the toggle upper link, wherein the position of the drive input pin is moved to a position symmetrical to a straight line connecting the slider output pin and the fixed fulcrum pin. The slide drive device for a press machine according to claim 3, characterized in that:

In this invention, since the position of the drive input pin is moved to a position symmetrical to a straight line connecting the slider output pin and the fixed fulcrum pin, the vertical movement of the slide becomes a knuckle motion. In addition to the effect, since the press machine having the same configuration can operate in both the sine motion and the knuckle motion, the link on the toggle can be replaced according to the processed product, and the optimum processing can be performed on the product.

According to a fifth aspect of the present invention, a second drive input pin which can be connected to the other end of the drive link is provided at a position symmetric to a straight line connecting the slider output pin and the fixed fulcrum pin. The slide drive device for a press machine according to claim 3, further comprising a toggle upper link.

In this invention, the vertical movement of the slide becomes a knuckle motion by further increasing the position of the drive input pin to a position symmetrical with a straight line connecting the slider output pin and the fixed fulcrum pin. In addition, since the press machine of the same configuration has both sine motion and knuckle motion, it is possible to perform optimal processing on the product by replacing one end of the drive link with a suitable drive input pin according to the processed product it can.

According to a sixth aspect of the present invention, there is provided a slide driving device for a press machine, wherein a crank shaft rotatably provided on a frame of the press machine, a connecting rod having a large end connected to an eccentric portion of the crank shaft, A vertical movement slider guided vertically by a groove provided in the frame above the crankshaft; and a pair of left and right horizontal movement sliders guided horizontally by a groove fixed in a straight line symmetrically to the frame. A small end of the connecting rod, one end of a vertical moving slider slider pin, one pair of left and right drive links connected to the other end of the horizontal moving slider pin, and one end of the horizontal moving slider. A pair of left and right lower links connected by a connecting pin with a slider pin and the other end connected to a plunger provided on the slide. A slide drive unit of the press machine to be.

In this invention, for example, one of the crankshafts
During the rotation, the drive output pin is moved within a range of 30 to 80 degrees with respect to the vertical line from the slider output pin, and within a range of 2 to 35 degrees outward with respect to the vertical line with the connection pin as the base point. Since the oscillating motion is used, the slide can be moved up and down with a motion approximate to a sine motion of a direct crank type.

[0017]

1 to 4 show a first embodiment of a slide driving device for a press machine according to the present invention. FIG. 1 is a front view of the press machine. The right half shows a state where the slide is at the top dead center, and the left half shows a state where the slide is at the bottom dead center. FIG. 2 is an explanatory view showing the slide drive device developed on a shaft, FIG. 3 is a skeleton diagram of the slide drive device of the first embodiment and the second embodiment, and FIG. 4 is a slide stroke of the first embodiment and the second embodiment. FIG.

A crankshaft 3 is rotatably provided on a frame 2 of the press machine 1, and an eccentric portion 5 of the crankshaft 3 is provided.
Is connected to the large end of the connecting rod 4.
A groove 6 fixed to the frame 2 vertically above the crankshaft 3
The vertical movement slider 7 which is guided in the vertical direction by the groove 6 is fitted into the groove. The slider output pin 8 of the vertical movement slider 7 has a small end of the connecting rod 4 and
One ends of a pair of left and right drive links 9 are connected together.

Fixed fulcrum pins 10 are provided at symmetric positions of the frame 2, respectively. A pair of left and right toggle upper links 11 are rotatably supported by the fixed fulcrum pins 10, respectively, and one end thereof The other end of the drive link 9 and one end of the toggle lower link 13 are connected to the drive output pin 12 provided at the other end, respectively, and the other end of the toggle lower link 13 is connected to one end of the plunger 15 and the connection pin 16. Are connected by The other end of the plunger 15 is connected to the slide 14.

For example, when the rod ratio is in the range of 4 to 8, during one rotation of the crankshaft 3, the drive output pin 12 moves vertically with respect to the vertical line with the slider output pin 8 moving vertically. The swing angle, that is, the angle of the angle surrounded by the straight line connecting the axis of the crankshaft 3 and the axis of the slider output pin 8 and the straight line connecting the slider output pin 8 and the axis of the drive output pin 12 In the embodiment, the inclination angle of the drive link 9 with respect to the vertical line is in the range of 30 to 80 °, and the angle of the drive output pin 12 with respect to the vertical line with the connection pin 16 as a base point, that is, the connection pin 16 of the plunger 15. Angle between the straight line connecting the axis of the fixed fulcrum pin 10 and the axis of the fixed fulcrum pin 10 and the straight line connecting the axis of the connecting pin 16 and the axis of the drive output pin 12. The angle of inclination with respect to the vertical On the outside of the vertical line of the pin 10 2 to 35
The drive output pin 12 can be swung within the range of °.

Next, the main points of the first and second embodiments will be described in more detail with reference to FIG. In FIG. 3, the drive mechanism A of the first embodiment and the drive mechanism B of the second embodiment show links and the like by thick solid lines and broken lines, respectively, and pin positions by black and double circles, respectively. Note that only one side is shown because the slide drive device is symmetrical.

The connecting rod ratio of the first embodiment (the length of the connecting rod 4 / the eccentric radius of the eccentric part 5 of the crankshaft 3, that is, one half of the stroke) is 5.16, which is one of the crankshaft 3.
The slider output pin 8 connected to the connecting rod 4A by rotation moves up and down between 8A1 and 8A2. The drive output pin 12 connected to the other end of the drive link 9 connected to one end of the slider output pin 8 and one end of the toggle link 11 is connected to 12A1 to 1A1.
Swing between 2A2. Further, the drive output pin 12
The connecting pin 16 for connecting the other end of the toggle lower link 13, the one end of which is connected to the plunger 15, is 16A.
Move up and down between 1 and 16A2. The length ratio between the upper toggle link 11 and the lower toggle link 13 was 3: 2.

At this time, during one rotation of the crankshaft, the drive output pin 12 is in a range of 52 to 73 ° with respect to the vertical line with the slider output pin 8 as the base point, and with respect to the vertical line with the connection pin 16 as the base point. And swing outward in the range of 5 to 24 °. Further, although the stroke curve of the slide is shown as curve A in FIG. 4, the slide is moved up and down by a motion that approximates a sine motion of a direct crank type.

In the second embodiment, the eccentric radius of the eccentric portion 5 of the crankshaft 3 is changed to set the connecting rod ratio to 7.43, and further, the lengths of the connecting rod 4B and the drive link 9B are changed.
The swing range of the drive output pin 12 was set between the same points as in the first embodiment. Therefore, the slider output pin 8 connected to the connecting rod 4B by one rotation of the crankshaft 3
Although the vertical movement is performed between B1 and 8B2, the range of the inclination angle of the toggle upper link 11 and the vertical movement range of the connecting pin 16 are also at the same point. That is, the positions of the top dead center and the bottom dead center of the slide are the same as in the first embodiment. 48-65 ° with respect to the vertical line with the slider output pin 8 in this case as a base point
Swings in the range of angles. The stroke curve of the slide during this time is slightly deviated from the curve A of the first embodiment as shown as a curve B in FIG. 4, but shows a motion approximated to a sine curve.

At this time, the drive output pin 12 is set at about 20 ° within a range of 30 to 80 ° with respect to the vertical line with the slider output pin 8 as a base point, and with respect to the vertical line with the fixed fulcrum pin 10 as a base point. When the press machine is swung outward in the range of 2 to 35 °, the press machine operates with a motion approximate to a sinusoidal curve. When the swing range of the drive output pin 12 with respect to the vertical line with respect to the slider output pin 8 is less than 30 ° or exceeds 80 °, the slider output pin 8
The swing range of the drive output pin 12 becomes extremely wide or extremely narrow as compared with the vertical movement amount of, and a sine motion cannot be obtained. At this time, it is preferable that the connecting rod ratio be about 5 to 8.

FIGS. 5 to 10 show third to fifth embodiments of the slide driving device for a press machine according to the present invention. FIG. 5 is a front view of the press machine 20, in which the right half shows the driving device in the sine motion of the third embodiment, and the left half shows the driving device in the knuckle motion of the fourth embodiment. FIG. 6 is an explanatory view showing the slide driving device according to the third embodiment as a shaft, FIG. 7 is an enlarged view of a main part of the slide driving device at the time of a sine motion according to the third embodiment, and FIG. FIG. 9 is an enlarged view of a main part of the slide drive device at the time, FIG. 9 is a skeleton diagram of the slide drive device of the third to fifth embodiments, and FIG. 10 is a slide stroke diagram of the third and fourth embodiments.

In the first embodiment, the toggle upper link 11 is
In the third embodiment, the upper link 2 is used.
1 is a 3-pair even element in which a drive input pin 22 is added diagonally below the slider output pin 8 of the vertical moving slider 7, and a slider input pin 23 is added to the vertical moving slider 7 separately from the slider output pin 8. . Since there are no other changes, the same reference numerals are given to the drawings and only the changed portions will be described.

FIG. 7 shows the state of the driving device when the slide is at the top dead center, and the state of each link when the slide is at the bottom dead center is indicated by the skeleton of the two-dot chain line. A slider input pin 23 is provided on the vertical movement slider 7 directly below the slider output pin 8 and is connected to the small end of the connecting rod 4.
By separating the input pin and the output pin in the above, the connecting portion is simplified to facilitate maintenance and inspection.

The upper toggle link 21 is a bell-crank link whose base is rotatably supported by a fixed fulcrum pin 10 provided on the frame 2, and one end of which is driven by a drive input pin 22. 9 and the other end is driven by a drive output pin 12 to toggle the lower link 1
3 is connected. At this time, the angle between the straight line connecting the fixed fulcrum pin 10 and the drive input pin 22 and the straight line connecting the fixed fulcrum pin 10 and the drive output pin 12 are acute angles.

Then, as shown in FIG. 9, while the crankshaft 3 makes one rotation, the slider output pin 8 is connected to 8C1 and 8C2.
The drive input pin 22 moves between 22C1 and 22C2.
The drive output pin swings between 12C1 and 12C2, and the connecting pin 16 moves up and down between 16C1 and 16C2.

At this time, during one rotation of the crankshaft, the drive output pin 12 is in the range of 47 to 65 ° with respect to the vertical line with respect to the vertical
From the vertical line in the range of 5 to 16 degrees. Further, the stroke curve of the slide is shown as curve C in FIG. 10, but the slide moves up and down by a motion that approximates a sine motion of a direct crank type. During this time, the drive input pin 22 swings inside a straight line connecting the slider output pin 6 and the drive output pin 12, that is, on the crankshaft 3 side.

The slide drive device according to the third embodiment obtains a motion similar to a sine motion while adopting the toggle link format as described above. A case of changing will be described in a fourth embodiment.

As shown in the left half of FIG. 5, the slide drive device of the fourth embodiment is different from the slide drive device of the third embodiment in that the other end of the drive link 9 and the toggle upper link 21 are connected to the drive input pin 22. In the connected state, the position of the drive input pin 22 is changed to the slider output pin 8 and the fixed fulcrum pin 10.
The second toggle upper link 25 to which the drive input pin 26 is relocated is used at a position symmetrical to the straight line connecting the upper and lower links, and is replaceable with the toggle upper link 21 of the third embodiment.

Then, while the crankshaft 3 makes one rotation,
As shown in FIG. 9, the slider output pins 8 are 8C1 and 8C2.
When moving up and down, the drive input pins 26 become 26D1 and 26D1.
Swing between D2, the drive output pin swings between 12D1 and 12D2, and the connecting pin 16 moves up and down between 16D1 and 16D2. The stroke curve of the slide at this time is shown as curve D in FIG. 10, but the slide moves up and down by knuckle motion.

In the fourth embodiment, in order to change the motion of the slide drive device, the left and right toggle links 21 must be replaced. However, only the connection between the other end of the drive link 9 and the toggle link is required. Embodiment 5 is an example of changing
It is.

In the fifth embodiment, in the slide driving apparatus of the third embodiment, the position of the drive input pin 22 is moved by the slider while the other end of the drive link 9 and the toggle link 21 are connected by the drive input pin 22. A second drive input pin 28 (FIG. 9) is newly provided at a position symmetrical to a straight line connecting the output pin 8 and the fixed fulcrum pin 10 and at a position corresponding to the drive input pin 26 of the fourth embodiment separately from the drive input pin 22. Uses an additional toggle-on link. Therefore, the change from the sine motion to the knuckle motion of the slide drive device is performed by connecting the other end of the drive link 9 to the second drive input pin 22.
The change operation is very easy because it is only necessary to reconnect the drive input pin 26.

The sixth embodiment is a slide drive device which can obtain a behavior similar to a sine motion while employing a link mechanism of a link press, which will be described with reference to FIGS. FIG. 11 is an explanatory view showing a main part of a driving device according to a sixth embodiment by a skeleton. FIG. 12 is a stroke diagram of the sixth embodiment.
FIG. 3 is an explanatory diagram showing a changed portion for obtaining a link motion.

The slide drive device of the sixth embodiment differs from the first to fifth embodiments in that, as shown in FIG. 11, the other end portions of the left and right drive links 30 are fixed to the frame symmetrically in a straight line. The one end of the lower link 33 is connected to the slider pin 32 and the other end is connected to the plunger 15 fixed to the slide. It is connected to a pin 34.

In the sixth embodiment, for example, the rod ratio is 5.7, and the slider output pin 8 moves up and down between 8E1 and 8E2 while the crankshaft 3 makes one rotation, and
The first slider pin 32 reciprocates horizontally between 32E1 and 32E2, and the connecting pin 34 of the lower link 33 includes 34E1 and 3E.
4E2, the driving link 30 is in the range of 40 to 60 degrees with respect to the vertical line, the lower link 33 is in the range of 6 to 29 degrees with respect to the vertical line, and the slider pin 32 of the horizontal movement slider 31 is moved. Swings outside the plumb line of the plunger 15.

In the driving device of the sixth embodiment, the connecting rod ratio is set to 4
, And within one rotation of the crankshaft, the drive output pin is in the range of 30 to 80 ° with respect to the vertical line with the slider output pin as the base point, and the inclination angle range of the lower link, that is, the connection is made. It is preferable to swing the pin within a range of 2 to 35 degrees outward with respect to the vertical line from the pin as a base point. Outside these ranges, the moving range of the slider pin of the horizontal moving slider becomes extremely wide or extremely narrow as compared with the vertical movement amount of the slider output pin, and a sine motion cannot be obtained.

In the drive device of the sixth embodiment, as shown in FIG. 13, it is necessary to move the crankshaft 3 above the guide of the vertical movement slider 7 or to increase the link motion in order to obtain a link motion. As compared with the case of the fourth and fifth embodiments, the apparatus becomes complicated and not practical.

[0042]

According to the first aspect of the present invention, the slide can be moved up and down by a motion approximating a sine motion of a crank direct type. Therefore, high-speed operation is possible while maintaining good bottom dead center accuracy of the knuckle motion, and the number of components is minimized by a drive mechanism using two upper and lower toggle links.

According to the second aspect of the invention, in addition to the effect of the first aspect, the connecting portion of the vertical motion slider is simplified, and maintenance and inspection are facilitated. Further, since the position of the crankshaft can be lowered, a more stable press machine can be obtained. In addition, the degree of freedom in designing to reduce the rod ratio is increased.

According to the third aspect of the invention, in addition to the effects of the first or second aspect, by reducing the distance between the left and right plungers, the load resistance can be improved and the drive link can be improved. And the arrangement of each link can be adjusted to make the entire press machine compact.

According to the fourth aspect of the invention, in addition to the effects of the first to third aspects, since the press machine having the same configuration can operate in both the sine motion and the knuckle motion, the link on the toggle can be operated according to the processed product. Can be exchanged for optimal processing of the product.

According to the fifth aspect of the present invention, in addition to the effects of the first to third aspects, a sine motion and a knuckle motion are simultaneously provided by a press machine having the same configuration, and a drive input suitable for one end of a drive link according to a processed product. By replacing the pins, it is very easy to apply the optimum processing to the product.

According to the sixth aspect of the present invention, a slide drive device of a so-called link press type can move the slide up and down by a motion approximate to a sine motion of a direct crank type.

[Brief description of the drawings]

FIG. 1 is a front view of a press machine according to a first embodiment, in which a right half shows a state when a slide is at a top dead center and a left half shows a state when a slide is at a bottom dead center.

FIG. 2 is an explanatory view in which the slide drive device of the first embodiment is developed on a shaft.

FIG. 3 is a skeleton diagram of a slide drive device according to a first embodiment and a second embodiment.

FIG. 4 is a stroke diagram of a slide according to the first and second embodiments.

FIG. 5 is a front view of the press machine at the time of sine motion of the third embodiment, and the left half is at the time of knuckle motion of the fourth embodiment.

FIG. 6 is an explanatory diagram in which a slide driving device according to a third embodiment is developed on a shaft.

FIG. 7 is an enlarged view of a main part of a slide drive device according to a third embodiment.

FIG. 8 is an enlarged view of a main part of a slide drive device according to a fourth embodiment.

FIG. 9 is a skeleton diagram of the slide driving devices of the third to fifth embodiments.

FIG. 10 is a slide stroke diagram of the third to fifth embodiments.

FIG. 11 is an explanatory diagram showing a skeleton of a main part of a slide drive device according to a sixth embodiment.

FIG. 12 is a stroke diagram of a sixth embodiment.

FIG. 13 is an explanatory diagram showing changed portions for obtaining a link motion according to a sixth embodiment.

[Explanation of symbols]

1 is a press machine, 2 is a frame, 3 is a crankshaft, 4 is a connecting rod, 5 is an eccentric part, 6 is a groove, 7 is a vertical movement slider, 8 is a slider output pin, 9 is a drive link, 1
0 is a fixed fulcrum pin, 11 is a toggle upper link, 12 is a drive output pin, 13 is a toggle lower link, 14 is a slide, 15 is a plunger, 16 is a connecting pin, 21 is a toggle upper link, 22 is a drive input pin, 23 Is a slider input pin, 25 is a second toggle upper link, 26 is a second drive input pin, 28 is a second drive input pin, 30 is a drive link,
31 is a horizontal slider, 32 is a slider pin, 33 is a lower link, and 34 is a connecting pin.

Claims (6)

[Claims] A slide drive device for a press machine,
(B) a crankshaft rotatably provided on a frame of a press machine, (ii) a connecting rod having a large end connected to an eccentric portion of the crankshaft, and (iii) the frame above the crankshaft. And (d) a pair of left and right drives, one ends of which are connected by a small end of the connecting rod and a slider output pin of the vertical slider. A link and (e) a pair of left and right toggles rotatably supported by fixed fulcrum pins provided at symmetrical positions of the frame and one end of which is connected to the other end of the drive link by a drive output pin. A link, and (f) a pair of left and right toggle lower links connected at one end to the drive output pin and at the other end to a plunger provided on the slide and a connection pin. Slide drive device for a press machine according to claim Rukoto. 2. The small end of the connecting rod is connected to the slider output pin by connecting the small end of the connecting rod to a slider input pin provided directly below the slider output pin on the vertical movement slider. The slide drive device for a press machine according to claim 1, wherein: 3. The link above a toggle is a bell crank-shaped link having a drive input pin provided diagonally below a slider output pin of the vertical motion slider, and the other end of the drive link is connected to the drive input pin. The slide driving device for a press machine according to claim 1 or 2, wherein 4. The apparatus according to claim 1, further comprising a second upper toggle link replaceable with said upper toggle link, wherein said drive input pin is moved to a position symmetrical to a straight line connecting said slider output pin and said fixed fulcrum pin. The slide drive device of a press machine according to claim 3, wherein 5. A toggle having an additional second drive input pin connectable to the other end of the drive link at a position symmetrical to the position of the drive input pin in a straight line connecting the slider output pin and the fixed fulcrum pin. The slide drive device for a press machine according to claim 3, further comprising a link. 6. A slide drive device for a press machine,
(B) a crankshaft rotatably provided on a frame of a press machine, (ii) a connecting rod having a large end connected to an eccentric portion of the crankshaft, and (iii) the frame above the crankshaft. (D) a pair of left and right horizontal moving sliders that are guided in the horizontal direction by grooves that are fixed symmetrically to the frame in a straight line, and E) a pair of left and right drive links, one end of which is connected to the small end of the connecting rod, the slider pin of the vertical movement slider and the other end which is connected to the slider pin of the horizontal movement slider;
(F) a press machine comprising: a pair of left and right lower links having one end connected to a slider pin of the horizontal slider by a connection pin and the other end connected to a plunger provided on the slide. Slide drive.