JPH10202396A - Press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the noise generating in the action time, to well make the working environment and to improve the convenience for using. SOLUTION: In a press composed by arranging an upper die 3 freely lifting at the just upper position of a lower die, an upper die lifting rod 7 is linked and connected freely sliding toward the upper and lower direction on a motor 1, the upper die 3 is connected to the die lifting rod 7, the lifting action of the upper die 3 is composed by driving it with the motor 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press machine.

[0002]

2. Description of the Related Art Conventionally, in a press machine, a lower mold is mounted on an upper portion of a rectangular work table, and a support is erected upward at a center of a rear portion of the work table. The upper die is disposed so as to be able to move up and down, and the raising and lowering operation of the upper die is driven by a hydraulic motor.

[0003]

However, in the conventional press working machine described above, since a hydraulic motor is used, replenishment of hydraulic oil, maintenance of an oil passage, and the like are required, and the periphery of the working machine is required. In some cases, the oil was contaminated by hydraulic oil and adhered to the workpiece. In addition, the working environment is not good because the hydraulic motor and the like emit noise during operation.

In addition, since the support is formed at the center of the rear part of the worktable, the work cannot be moved in the front-rear direction of the worktable, and the work must be performed while moving the work in the left-right direction of the worktable. Therefore, the workability is poor depending on the shape of the workpiece.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention relates to a press working machine in which an upper die is disposed at a position directly above a lower die so as to be movable up and down. The upper die is connected to the above-mentioned die elevating rod in such a manner that the upper die is slidably linked in the direction, and the elevating operation of the upper die is driven by an electric motor.

Further, the main body frame of the press machine is formed so that the front and rear sides and the left and right sides of the lower mold are open, and the workpiece can be moved in the front and rear direction or the left and right direction of the lower mold. It was done.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a press machine according to the present invention, a pair of left and right flat plate-shaped main frames are arranged facing each other with a space therebetween. The upper mold driving part for raising and lowering the upper mold is mounted between the upper part of the notch of the main body frame, and the work table is formed between the lower part of the notch of the main body frame. And a lower mold mounting recess is formed substantially at the center of the worktable, and the lower mold is mounted in the lower mold mounting recess.

[0008] The upper die driving section is connected with the ball screw shaft to the electric motor, the upper die lifting rod is connected to the same ball screw shaft, and the upper die is connected to the tip of the upper die lifting load. It was done. Then, the ball screw shaft is rotated by driving the electric motor, and the upper die attached to the tip of the upper die lifting rod is moved up and down along the ball screw shaft.

Therefore, since the press machine according to the present invention uses the electric motor for driving, no noise is generated at the time of operation and the working environment can be improved.

In addition, since a hydraulic motor is not used as in the prior art, replenishment of hydraulic oil and maintenance of an oil passage are not required, so that usability can be improved.

In addition, the main body frames are arranged with a space therebetween, and the lower mold is disposed between the lower portions of the notches of the two main frames, so that the processing machine main body can be moved forward and backward and left and right sides of the lower mold. Is formed in an open state, so that when performing end processing or intermediate processing of a long object, the workpiece is inserted into the upper part of the lower mold while extending in the front-rear direction or the left-right direction of the lower mold. And
It can be processed and taken out, and the direction of movement of the workpiece can be freely selected according to the condition around the installation location of the press machine, the shape of the workpiece, etc., so that the workability is good. It can be.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, a press machine A according to the present invention comprises a pair of left and right flat plate-shaped main frames 2,
2 'are arranged facing each other with an interval, and both body frames 2,
An upper mold driving section B for raising and lowering the upper mold 3 is disposed between the upper portions of the upper frame 2 ', and a work table 5 is disposed between the middle portions of the two main body frames 2, 2'.

As shown in FIG. 2, the main body frames 2, 2 '
Notches 2a and 2a 'are formed substantially at the center of the front to form a substantially U-shape in side view. And the notch 2 of the body frame 2, 2 '
a, 2a ', a rectangular supporting frame 35, 35 is horizontally laid at an interval in the front and rear, and an upper mold driving unit B is mounted on the upper surface of the supporting frame 35, 35, and the main body frame 2, A worktable 5 is provided between the lower portions of the notches 2a and 2a 'of 2', and a lower mold mounting recess 5a is formed substantially at the center of the worktable 5, and a lower mold mounting recess 5a is The mold 4 is attached.

Further, between the lower ends of the body frames 2, 2 ',
The base frames 43, 43 are laid horizontally at an interval in the front and rear, and the control box 37 is placed on the upper surfaces of the base frames 43, 43, and the fixing jack 40 and A rolling wheel 41 for movement is mounted. In the figure, 36
Is a storage box, 38 is a foot switch, 39 is a connection cord, 42, 42 'is an L angle connecting the body frame 2, 2' to the base frame 43, 43, and 44 is a side between the body frame 2, 2 '. It is a cylindrical horizontal frame that is bridged.

As shown in FIG. 3, the upper mold driving section B is basically integrally formed of an electric motor 1 for driving, a transmission section B1, and a rod sliding section B2.

The transmission section B1 has the ball screw shaft 6 interlocked to the electric motor 1 via a transmission gear 18.

That is, the transmission unit B1 is attached to the lower rear portion of the rectangular box-shaped transmission unit casing 12 with the motor shaft 17 protruding vertically upward,
A transmission gear 18 is rotatably supported at substantially the center of the transmission casing 12, and a ball screw shaft 6 is supported at the front of the transmission casing 12 with its tip projecting vertically downward. ing.

A large-diameter spur gear 18a of the transmission gear 18 meshes with a driving gear 17a formed at the end of the motor shaft 17, and a small-diameter spur gear 18b formed coaxially with the large-diameter spur gear 18a has a ball screw shaft. The driven spur gear 19 fixed to the base end 6a of the gear 6 is meshed. In the figure, 13 is a transmission casing lid,
Reference numeral 20 denotes a retaining nut, 21, 22, and 23 bearings, 15 and 16 bearing covers, 18c a rotation shaft of the transmission gear 18, and 25 a connection plug.

An upper die 3 attached to the tip of the upper die elevating rod 7 by rotating the ball screw shaft 6 is connected to an upper die elevating rod 7 linked to the ball screw shaft 6.
Are configured to move up and down along the ball screw shaft 6.

That is, the rod sliding portion B2 is provided at the lower front portion of the transmission portion casing 12 with the ball screw shaft 6 inserted through the hollow portion of the hollow cylindrical rod sliding portion casing 14. A base end of the casing 14 is continuously provided, and an upper die elevating rod 7 is slidably held at a distal end of the rod sliding portion casing 14 along the ball screw shaft 6.

A ball nut 8 is screwed onto a ball screw 6b formed at the tip of the ball screw shaft 6.
The tip of the ball nut 8 is loosely fitted to the joint 9, the upper die elevating rod 7 is connected to the end of the joint 9, and the upper die fitting 11 is inserted into the distal end of the same die elevating rod 7. The upper mold 3 is interchangeably screwed to the tip of the mold fixture 11. In the figure, 24 is a seal member, and 10 is a stopper.

Further, a stroke adjusting portion B3 is attached to the rod sliding portion B2, and the stroke adjusting portion B3 has a function of adjusting an upper limit and a lower limit of an ascending and descending range of the upper die 3. .

That is, the stroke adjusting portion B3 is formed by an opening formed in front of the outer peripheral wall of the rod sliding portion casing 14.
14a, a rectangular box-shaped stroke adjusting section casing 33 is mounted via a mounting seat 34, and the upper die elevating position display body 26 protruding forward on the outer peripheral surface of the joint 9 is connected to the rod sliding section casing. 14 through the opening 14a and the vertically long opening 34a formed in the mounting seat 34, so that the upper mold elevating position indicator 26 is moved up and down in conjunction with the elevating operation of the upper mold 3. In addition, an upper-limit detection sensor 27 and a lower-limit detection sensor 28 are provided at both left and right positions in the vertical movement direction of the upper mold elevating position display body 26, respectively.

Upper limit detection sensor 27 and lower limit detection sensor
The control box 28 detects that the upper mold elevating position display body 26 has moved to the side position of the sensors 27 and 28, and
Notify the stroke adjustment unit casing
Adjustment bolts 29, 30 are supported vertically on the upper wall 33a of 33, and adjustment knobs 31, 32 are provided at the base ends of the adjustment bolts 29, 30.
At the same time, the two sensors 27 and 28 are screwed in the middle of the adjustment bolts 29 and 30, respectively.
By pivoting 1,32, both sensors 27,28 can be moved up and down.

As described above, the stroke adjusting section B3 is capable of adjusting the positions of the upper and lower limit detecting sensors 27 and 28 and presetting the vertical range of the upper mold 3.

Therefore, it is possible to prevent an erroneous operation in which the upper mold 3 moves up and down beyond a preset elevating range, and to adjust the position of the lower limit detecting sensor 28 to prevent the upper mold 3 from moving up and down. By changing the lowest position, all kinds of pressure processing such as punching, drawing, and stamping can be performed.

The press machine A is configured as described above, and uses the electric motor 1 for driving.
No noise is generated during operation, and the working environment can be improved.

Further, since a hydraulic motor is not used unlike the prior art, there is no need to supply hydraulic oil or maintain an oil passage, and the usability can be improved.

In addition, the main body frames 2, 2 'are arranged at an interval, and the cutout portions 2a, 2a' of both main body frames 2, 2 'are provided.
The lower die 4 is disposed between the lower portions of the
The front and rear sides and the left and right sides of the lower mold 4 are formed in an open state.
The workpiece can be inserted into the upper part of the lower die 4 while extending in the front-rear direction or the left-right direction, processed, and removed, and the state around the installation location of the press machine A and the shape of the workpiece. Thus, the moving direction of the workpiece can be freely selected according to the conditions and the like, so that the workability can be improved.

[0031]

The present invention is embodied in the form described above, and has the following effects.

(1) According to the first aspect of the present invention, in a press working machine in which an upper mold is disposed at a position directly above a lower mold so as to be able to move up and down, an upper mold lifting rod is vertically moved by an electric motor. The upper die is connected to the same die lifting rod and the upper die is driven by an electric motor. And the working environment can be made favorable.

Further, since a hydraulic motor is not used as in the prior art, replenishment of hydraulic oil and maintenance of an oil passage are not required, so that usability can be improved.

(2) According to the second aspect of the present invention, the main body frame of the press machine is formed such that the front and rear sides and the left and right sides of the lower mold are open, and the workpiece is formed by the lower mold. Because it is configured to be movable in the front-rear direction or left-right direction, the workpiece is extended on the upper part of the lower die in the front-rear direction or left-right direction of the lower die when performing terminal processing or intermediate processing of a long object. Can be inserted, processed, and removed, and the moving direction of the workpiece can be freely selected according to the state of the installation location of the press machine, the shape of the workpiece, and the like. Can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of a press machine according to the present invention.

FIG. 2 is a left side view of the same.

FIG. 3 is a partially cutaway sectional view of an upper mold driving unit.

FIG. 4 is a partially cutaway sectional view of a stroke adjusting unit.

[Explanation of symbols]

 Reference Signs List A Pressing machine B Upper die drive unit B1 Transmission unit B2 Rod sliding unit B3 Stroke adjustment unit 1 Electric motor 2,2 'Body frame 2a, 2a' Cutout 3 Upper die 4 Lower die 5 Work table 6 Ball screw Shaft 7 Upper die lifting rod 8 Ball nut 17 Motor shaft 18 Speed change gear 19 Follower spur gear 37 Control box

Claims (2)

[Claims] A press working machine comprising an upper mold (3) disposed vertically above and below a lower mold (4) so as to be movable up and down, wherein the electric motor (1) is provided with an upper mold lifting rod (7). The upper die (3) is connected to the same die lifting rod (7), and the upper die (3) is raised and lowered by the electric motor (1). A press machine characterized by being configured to be driven by. 2. The main body frame (2, 2 ') is formed so that the front and rear sides and the left and right sides of the lower mold (4) are open, and the workpiece is moved in the front and rear direction of the lower mold (4). 2. The press machine according to claim 1, wherein the press machine is configured to be movable in the left-right direction.