JP2001150190A - Press device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a press device which is applicable to various kinds of forming by working and suitable to practical application by enabling arbitrary selective setting of pressurizing force, driving stroke in the vertical direction of an upper die or the like. SOLUTION: This device is provided with a main press mechanism part 43 provided with a press shaft 28 which is supported with a frame 11 freely movably in the vertical direction and to which driving force in the vertical direction is imparted and a subsidiary press mechanism part 44 provided with an upper die 41 which is supported with the press shaft 28 of this main press mechanism part 43 freely movably in the vertical direction and to which driving force in the vertical direction is imparted. By using the proper combination of the main press mechanism part 43 and the subsidiary press mechanism part 44, the pressurizing force, driving stroke in the vertical direction or the like are arbitrarily and selectively set with respect to the upper die 41 and this press device is applicable to various kinds of forming by working.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a press device for performing high-precision press working on a workpiece such as a work.

[0002]

2. Description of the Related Art As is well known, as a press device as described above, for example, a type called a lever type has been put to practical use.

The lever type press device is mainly supported by an upper die movably supported on a base in a vertical direction, and supported on a base movably in a vertical direction, and is provided with a vertical driving force. A driving body and an arm whose one end is rotatably supported by the upper mold, the intermediate part is rotatably supported by the base, and the other end is rotatably supported by the driving body. I have.

Then, the vertical driving force applied to the driving body is transmitted to the upper mold by rotating the arm, so that the upper mold moves vertically and comes into contact with and separates from the lower mold. become. In this case, the arm is smoothly rotated by any two of the upper die, the base, the driving body, and each of the connecting portions, each of which is supported so as to have some play in the horizontal direction. Will be moved.

[0005]

However, the above-mentioned conventional press apparatus has a structure in which the pressing force and the vertical drive stroke of the upper die cannot be largely varied. For this reason, conventionally, it is necessary to prepare a press device capable of satisfying the conditions in accordance with the required pressing force, the driving stroke of the upper die, and the like, which necessitates capital investment. Have a problem.

Accordingly, the present invention has been made in view of the above circumstances, and can be applied to various types of working and molding by enabling the pressing force and the vertical drive stroke of the upper mold to be arbitrarily settable. It is an object of the present invention to provide a very good press device suitable for practical use.

[0007]

According to the present invention, there is provided a press apparatus comprising: a main press mechanism section having a driven body which is vertically movably supported by a base and is provided with a vertical driving force; The main press mechanism has a sub-press mechanism that is vertically movably supported by the driven body and is provided with an upper die to which a vertical driving force is applied.

According to the above-described structure, the main driven mechanism to which the driving force in the vertical direction is applied by the main pressing mechanism is:
Since the upper die is provided with the vertical driving force by the sub-press mechanism, the pressing force and the vertical driving stroke of the upper die can be arbitrarily set. As a result, it can be applied to various types of processing and molding and is suitable for practical use.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. That is, in FIG. 1, reference numeral 11 denotes a frame serving as a base of the press device. In this frame 11, a lifting shaft 14 serving as a main driving body is vertically moved by a pair of bearing portions 12 and 13 installed vertically in FIG.
It is movably supported in the direction indicated by B.

One end of an eccentric lever 16 is rotatably connected to a lower end of the elevating shaft 14 via a rotating shaft 15. At the other end of the eccentric lever 16, a circular through hole 16a is formed. And this through hole 1
The eccentric shaft 17 is loosely inserted in 6a. The eccentric shaft 17 has a rotating shaft 18 at a position eccentric from the axis.
Are integrally formed.

The rotating shaft 18 is rotatably supported by the frame 11. A pulley 19 is installed on the rotating shaft 18 so as to rotate integrally. The pulley 19 is connected via a belt 22 to a pulley 21 supported so as to rotate integrally with a rotation shaft 20 a of a main motor 20 serving as a main drive source fixed to the frame 11 so as to be able to transmit a rotational force. Have been.

Therefore, the main motor 20 is driven,
The rotational force of the rotating shaft 20a is applied to the pulley 21, the belt 2
2. When the rotation is transmitted to the eccentric shaft 17 via the pulley 19 and the rotating shaft 18, the rotational movement is converted into a linear movement by the eccentric lever 16, and the elevating shaft 14 is moved in the vertical direction.

A pair of guides 23 are arranged on the upper end of the elevating shaft 14 so as to be oriented in a horizontal direction, that is, in directions indicated by arrows C and D in FIG.
Is installed. A roller 25 rotatably supported at one end of an arm 24 serving as a transmission member is loosely inserted between the pair of guides 23.

The roller 25 has a plain bearing structure, and can roll in the horizontal direction along the guide 23. Thereby, the arm 24
The lifting shaft 14 is supported so as to be rotatable and movable in the horizontal direction.

A roller 26 having a plain bearing structure is rotatably supported at an intermediate portion of the arm 24. The rollers 26 are formed on a pair of guides 2 arranged side by side on the frame 11 so as to face in the horizontal direction.
7 and can be rolled horizontally along the guide 27. Thereby, the arm 24
Is supported on the frame 11 so as to be freely rotatable and movable in the horizontal direction.

Further, at the other end of the arm 24, an upper end of a press shaft 28, which is a main driven body supported vertically movably on the frame 11, rotates via a rotation shaft 29. It is freely supported. Therefore, when the elevating shaft 14 is driven in the vertical direction, the driving force causes the arm 24 to rotate about the roller 26 as a fulcrum, whereby the press shaft 28 is driven in the vertical direction.

In this case, the arm 24 is
5 and 26 are guides 23 of the elevating shaft 14, respectively.
In addition, by swinging horizontally along the guide 27 of the frame 11, smooth rotation is performed.

That is, the arm 21 is connected to the elevating shaft 1
The connecting portion with the press shaft 28 is defined as a swinging fulcrum portion, and the connecting portion with the press shaft 28 is defined as an action point portion. The arm 21
In this case, if any two of the force point portion, the fulcrum portion, and the action point portion are swingable, a smooth lever action can be realized.

Here, a bearing portion 30 formed in a substantially cylindrical shape is attached to the press shaft 28 such that the axis of the hollow portion is oriented in the vertical direction. And
In the bearing portion 30, an upper end portion of a rotary drive shaft 31 formed in a columnar shape as a sub-drive body is supported so as to be rotatable around its axis. The rotation drive shaft 31 is supported in the bearing 30 so as not to move in the vertical direction.

A screw 31a is formed at the lower end of the rotary drive shaft 31 along the peripheral side surface.

Further, a bevel gear 32 is fitted to an intermediate portion of the rotary drive shaft 31. This bevel gear 32
Is meshed with a bevel gear 34 that rotates integrally with a rotating shaft 33 supported by the press shaft 28.

The rotating shaft 33 has a pulley 35
Are attached so as to rotate integrally. As shown in FIG. 2, the pulley 35 has a rotating shaft 36a of a sub motor 36 serving as a sub driving source fixed to the press shaft 28.
And a pulley 37 attached so as to rotate integrally therewith, via a belt 38 so as to be able to transmit a rotational force.

Therefore, the sub motor 36 is driven,
The rotational force of the rotating shaft 36a is applied to the pulley 37, the belt 3
8, the pulley 35, the rotating shaft 33 and the bevel gear 34 transmit the bevel gear 32 to
1 will be driven to rotate about its axis.

That is, this rotary drive shaft 31
Each mechanism including a sub motor 36 for rotating the rotary drive shaft 31 is all mounted on the press shaft 28, and the press shaft 28 is located at any position within its vertical movement range. Rotary drive shaft 31
Is to be driven to rotate.

On the other hand, on the press shaft 28, a cylinder unit 39 serving as a driven body is provided with a slide mechanism 4.
It is supported so as to be movable in the vertical direction via a zero. At the upper end portion of the cylinder unit 39, a cylindrical portion 39b having an axial center set in a vertical direction, and a perforated screw groove 39a with which the screw portion 31a of the rotary drive shaft 31 is screwed is formed on the inner peripheral surface. is set up.

Therefore, as described above, the sub motor 36
Is driven to rotate the rotary drive shaft 31, the cylinder unit 39 is moved upward or downward with respect to the press shaft 28 according to the rotation direction. An upper die 41 is attached to the lower end of the cylinder unit 39.

On the other hand, the frame 11 has a mold 42
Is installed. The mold part 42 is provided on a table 42a fixed on the frame 11 and on the table 42a.
And a lower mold 42b configured to receive the upper mold 41.

That is, first, the upper mold 41 is
The driving force of 0 drives the elevating shaft 14 in the vertical direction, and the driving force rotates the arm 24 to move the press shaft 28 in the vertical direction. It comes into contact with and separates from the lower mold 42b.

In the upper mold 41, the rotary drive shaft 31 is rotated by the driving force of the sub motor 36, and the cylinder unit 39 is moved by the rotation driving force to the press shaft 28.
The sub-press mechanism 44 is configured to be moved in the vertical direction with respect to the lower die 42b.

In this case, the vertical drive stroke of the upper die 41 driven by the sub-press mechanism 44 is set longer than the vertical drive stroke of the press shaft 28 driven by the main press mechanism 43. Have been.

For this reason, by appropriately combining the main press mechanism 43 and the sub-press mechanism 44, the pressing force and the vertical drive stroke of the upper die 41 can be arbitrarily selected. Can be configurable,
It can be applied to various types of processing and molding.

For example, the primary press mechanism 43 presses the upper die 41 against a work (not shown) with a predetermined pressing force to perform primary processing.
In a state in which the upper die 41 is stopped and the upper die 41 is kept in pressure contact with the workpiece, the secondary press mechanism 44 further presses the upper die 41 to the workpiece with a pressing force different from that at the time of the primary processing to perform the secondary processing. It is possible to perform complicated processing and molding.

Conversely, the upper die 41 is pressed against the work with a predetermined pressing force by the sub-press mechanism 44 to perform primary processing, and then the sub-press mechanism 44 is stopped, and the upper die 41 is moved to the work. With the main press mechanism 43 maintaining the pressed state, the upper die 41 can be further pressed against the workpiece with a different pressing force from the time of the primary processing to perform the secondary processing.

Conventionally, in the case of performing the working molding requiring such two press workings, it is necessary to prepare two press machines for the primary working and two press workings for the secondary working. After the processing is completed, it is necessary to remove the work from the press device for the primary processing and to remount the work on the press device for the secondary processing, so that not only equipment but also handling is complicated.

On the other hand, according to the above-described embodiment, the primary working and the secondary working can be performed continuously by one press machine without the work transfer operation. In addition to being advantageous in terms of workability, handling can also be facilitated in terms of workability. In particular, when performing multi-stage molding or the like with different pressing forces in each stage, it is effective in terms of facilities and workability.

For example, when a process requiring a large pressing force such as a punching process of a work is performed, the process is performed by driving the main press mechanism 43 and a high cutting force such as a half cut process is performed. When performing processing that requires precision, the processing that requires a large pressing force and the processing that requires high precision, such as performing by driving the sub-press mechanism section 44, are performed by one. It can be realized with one press device.

Further, the working molding requiring a large pressing force is executed by driving the main press mechanism 43.
It is also conceivable to use the work forming requiring a long drive stroke by driving the sub-press mechanism 44.

Further, in the process of forming a large amount of deformation, that is, for example, a large amount of punching, the upper die 41 is first moved by the sub-press mechanism 44 to perform a certain amount of process forming. There is also a usage method in which final working and molding is performed with a larger pressing force by the mechanism section 43.

It should be noted that the present invention is not limited to the above-described embodiment, and can be variously modified and implemented without departing from the scope of the invention.

[0040]

As described in detail above, according to the present invention,
It is possible to arbitrarily set the pressing force, the vertical drive stroke of the upper die, and the like, so that it is possible to provide a very good press apparatus which can be applied to various types of working and can be practically used.

[Brief description of the drawings]

FIG. 1 is a side view for explaining an embodiment of a press device according to the present invention.

FIG. 2 is a front view shown for explaining a configuration of a main part in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Frame, 12 and 13 ... Bearing part, 14 ... Elevating shaft, 15 ... Rotating shaft, 16 ... Eccentric lever, 17 ... Eccentric shaft, 18 ... Rotating shaft, 19 ... Pulley, 20 ... Main motor, 21 ... Pulley, Reference numeral 22: belt, 23: guide, 24: arm, 25, 26: roller, 27: guide, 28: press shaft, 29: rotating shaft, 30: bearing part, 31: rotary drive shaft, 32: bevel gear, 33 ... Rotary shaft, 34 ... Bevel gear, 35 ... Pulley, 36 ... Sub motor, 37 ... Pulley, 38 ... Belt, 39 ... Cylinder unit, 40 ... Slide mechanism, 41 ... Upper mold, 42 ... Mold part, 43 ... Main Press mechanism 44, sub-press mechanism.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigemori Kachi 740 Onagashima, Odaishima, Kawanishi-cho, Higashi-Okitama-gun, Yamagata Prefecture (72) Daisuke Takahashi 740 Onagashima, Oaza-jima, Kawanishi-cho, Higashi-Okitama-gun, Yamagata Inside Back Machinery Co., Ltd. (72) Inventor Masahiro Kanno 740, Onagashima, Kawanishi-cho, Higashi-Okitama-gun, Yamagata Prefecture F-term inside Web Back Machinery Co., Ltd. 4E090 AA01 AB01 BA02 CC02 CC04 HA10

Claims (9)

[Claims] 1. A vertically movably supported base,
A main press mechanism provided with a main driven body to which a vertical driving force is applied; and a main driving mechanism which is vertically movably supported by the main driven body of the main press mechanism to apply a vertical driving force. A press device comprising: a sub-press mechanism provided with a mold. 2. The main press mechanism section includes a main drive body supported movably in a vertical direction on the base, a main drive source for applying a vertical driving force to the main drive body, and a base. 2. The press device according to claim 1, further comprising: a transmission member supported by the main body and transmitting a driving force of the main driving body to the driven main body. 3. The sub-press mechanism section includes a sub-driven body provided with the upper die and supported movably in a vertical direction by the main driven body, and the sub-driven body is attached to the main driven body. 2. The press device according to claim 1, further comprising a drive mechanism that drives in a vertical direction. 4. The sub-driven body has a cylindrical portion with an axial center set in a vertical direction and a threaded portion formed on an inner peripheral surface, and the driving mechanism has a substantially cylindrical shape and a peripheral side surface. A threaded portion to be screwed to the threaded portion of the cylindrical portion of the driven body is formed, and a sub-drive supported by the driven body so as to be rotatable around its axis, 4. The press apparatus according to claim 3, further comprising a sub-drive source for applying a rotational driving force to the sub-drive. 5. The apparatus according to claim 1, wherein the auxiliary press mechanism drives the upper die in a state where the drive of the driven body by the main press mechanism is stopped.
The press device as described. 6. The sub-pressing mechanism moves the upper die to a predetermined driving position after the main pressing mechanism moves the driven body to a predetermined driving position. The press device according to claim 1. 7. The apparatus according to claim 1, wherein the main press mechanism drives the main driven body in a state where the drive of the upper die by the sub press mechanism is stopped.
The press device as described. 8. The main press mechanism, wherein after the sub-press mechanism moves the upper die to a predetermined drive position,
2. The press apparatus according to claim 1, wherein the driven body is moved to a predetermined drive position. 9. A vertical drive stroke of the upper die by the sub-press mechanism is set longer than a vertical drive stroke of the main driven body by the main press mechanism. The press device according to claim 1.