JPH0929491A - Retractable press and device for machining long object using retractable press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out machining with satisfactory work efficiency by constituting a press separately with an upper and lower part so that the upper structure may be raised or lowered against the lower structure and lowering an unnecessary press below the surface of a working table so as to put the press out of the way. SOLUTION: A press is divided into an upper structure 1 and a lower structure 2 and then, press working is performed by screwing down the upper die 10, with a die set type metallic die 6 attached to the lower plate 3 of the upper structure 1, and with a hydraulic mechanism 8 attached to the upper surface of the upper plate 5. The upper structure 1 is placed on the lower structure 2 and held so as to make it raised or lowered freely by a pneumatic cylinder rod; as a result, machining is performed with a necessary die set metallic die 6 called on a working table 21; and after the machining is finished, the metallic die is hidden under the working surface 29 so as not to disturb other machining operations. With the upper structure 1 lowered, an electric circuit is shut off for each press in order to prevent the hydraulic mechanism 8 from actuating. Thus, a long member 32 is continuously machined without being interfered with an unnecessary press.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an invisible press which is capable of performing an extremely simple, easy and efficient process when a plurality of press processes are performed on a long processed member, and the invisible press. The present invention relates to a long product processing device using.

[0002]

2. Description of the Related Art Conventionally, in the case of performing a plurality of press workings on a long working member, a plurality of press machines are installed in a factory,
The work was carried out by moving the members between the presses for each process, but it was unavoidable that the efficiency declined due to the transportation of long-sized work members and the movement of workers. The drop in the rate was extremely high. In addition, the conventional method requires a large work area between each work process (press machine) in order to carry long workpieces without contact and collision, and to carry them efficiently and work efficiently. And Therefore,
The number of workers was large and the efficiency of land use was poor. Also,
In order to improve the efficiency, it is usual to use a continuous die, but it is impossible to take out a part of the die and perform a pressing operation.

[0003]

In the case where a plurality of press workings are performed on a long working member by eliminating the above-mentioned drawbacks, it is possible to efficiently move the plurality of press workings by minimizing the movement of a person and the member. A method that can be given arbitrarily was sought.

[0004]

[Means for Solving the Problems] The pressing machine is divided into two parts, an upper structure and a lower structure, and a die-set mold is fixed to the lower plate of the upper structure, and is attached to the outside of the upper surface of the upper plate. Attached a hydraulic mechanism to allow the hydraulic plunger to press down the upper mold to perform the pressing work. The upper structure thus constructed was placed on the lower structure and projected upward from the lower structure. The pneumatic cylinder rod holds it so that it can be pushed up and pulled down freely.By calling the necessary dies onto the workbench and performing the pressing work as necessary, the upper structure can be It was lowered and the mold was hidden below the work surface of the workbench so that it would not interfere with other work.

Further, when the upper structure is lowered, a limit switch which automatically cuts an electric circuit is attached to each press machine so that the hydraulic mechanism does not operate, so that it is raised and rises on the workbench. Only the presses shown in Figure 2 can be used for press work to prevent damage and accidents due to malfunction. Also, in order to improve work efficiency, multiple presses can be installed adjacent to each other in a group to minimize the moving distance of the processing members and perform the required multiple processing. And

[0006]

[Operation] The present invention operates as follows.

First, when the power switch is turned on and the pneumatic lifting lever is pushed up (turned on), the pneumatic cylinder for raising installed in the lower structure of the hidden press works to move the pneumatic cylinder rod upward. To the height of the work position, and at the same time, the limit switch is turned on (turns on). When the foot switch is stepped on in this state, the hydraulic mechanism works to lower the hydraulic plunger, and the working member inserted into the working space is pressed.

At this time, the slide shaft of the ball bearing slide bush serves as a guide and a steady rest for the vertical (invisible) movement of the upper structure.

Next, when the processed member after the pressing work is pulled out from the work space of the upper structure and the pneumatic lifting lever is pushed down, the upper structure is sunk under the work table. Next, another pneumatic lifting lever is pushed up to call up an invisible press equipped with a die necessary for the second processing on the workbench, and the next processing is performed in the same procedure as above.

[0010]

EXAMPLE An example of the present invention will be described with reference to the drawings. (1) is an upper structure of an invisible press and (2) is a lower structure thereof. The upper structure (1) comprises a lower plate (3), an upper plate (5) fixed in parallel with the lower plate (3) by four columns (4), and the upper plate (3) and the upper plate (3). The die set die (6) is inserted and held between (5) and the die (6) is pressed down by the hydraulic mechanism (8) attached to the upper surface outside of the upper plate (5) to perform the press work. Built to do. (7) is a die spring. The space between the upper plate (5) and the lower plate (3) is a space for properly accommodating the die-set mold (6), and the mold (6) is screwed and fixed to the lower plate (3). ing. A hydraulic mechanism (8) is fixed to the upper surface of the upper plate (5), and a hydraulic plunger (9) is attached to the upper plate (5).
Of the die set (6) by projecting to the lower surface of the upper die (1
0) is reduced. (11) is a hydraulic hose.

In the lower structure (2), the pedestal (14) is mounted on the substrate (12) by the four columns (13).
It is fixed in parallel with 2), and a plurality of pneumatic cylinders for raising (15) and a plurality of ball bearing slide bushes (16) are installed between the substrate (12) and the pedestal (14). The pneumatic cylinder rod (17) and slide
The shaft (18) is projected above the pedestal (14), and the pneumatic cylinder rod (17) and the slide shaft (18) are fixed to the lower plate (3) of the upper structure (1). The pneumatic cylinder rod (17) holds the upper structure (1) movably up and down. The slide shaft (18) serves as a steady rest during the vertical movement of the upper structure (1).

Reference numeral (19) is a waste-dust discharging cylinder, which projects downward from the lower plate (3) of the upper structure (1) and has its lower end opened to the lower surface of the pedestal (14) of the lower structure (2). And goes up and down with the upper structure (1). (20) is an elevating lever of an air cylinder (15) that controls vertical movement of the upper structure (1), and (21) is a limit switch, which is moved by the lower plate (3) when the upper structure (1) descends. When the sensing piece is pressed down, the contact is released to disconnect the electric circuit of the hydraulic solenoid valve (22). When the upper structure (1) rises, the sensing piece returns to its original state and connects the electric circuit. (23) is the power source (2
4) A foot switch that turns the circuit on and off.

The electrical wiring between the hydraulic solenoid valve (22), the limit switch (21) and the foot switch (23) is as shown in FIG. That is, when the power switch (25) is turned on and the pneumatic lifting lever (20) is raised, the pneumatic cylinder (15) for raising works and the upper structure (1) rises. The switch (21) enters and a hydraulic solenoid valve (22) circuit is formed. When the foot switch (23) is stepped on in this state, an electric current flows through the hydraulic solenoid valve (22), the hydraulic plunger (9) is lowered, and a pressing operation is performed.

Next, an example of a long object processing apparatus using the invisible press (26) of the present invention will be described. A plurality of concealing presses (26) are arranged in groups adjacent to each other at both ends and the center in the length direction of a workbench (27) which is long in the lateral direction. In the example shown in FIG. 3, four invisible presses (26) are arranged in a “field shape” on each of the left and right ends, and two are installed in the center of the workbench (27). The invisible presses (26) are placed side by side and in contact with each other. The respective invisible presses (26) are individually moved up and down by corresponding pneumatic lift levers (20) provided on the front cover (28) surface of the workbench (27).

In each of the invisible presses (26), the work surface of the upper structure (1) coincides with the work surface (29) of the work table (27) at a position where the upper structure (1) is raised. The height (H) of the upper structure (1) is defined.

A plurality of foot switches (23) for opening and closing the electric circuit of the hydraulic solenoid valve (22) are arranged on the floor surface, and a power source (24), a foot switch (23), and a limit switch (21). Are wired as follows.

After connecting the limit switch (21) in series to the electric circuit of each hydraulic solenoid valve (22),
The electric circuits of all hydraulic solenoid valves (22) are connected in parallel, and the power supply (24) circuit in which each foot switch (23) is connected in parallel and the electric circuit of the hydraulic solenoid valve (22) are connected in series. This allows the foot switch (2
By stepping on 3), only the covert press (26) which is raised and is in the working position can be operated, and consideration is given so that the lowered covert press (26) does not malfunction. .

On the upper surface of the workbench (27), there are provided crosspieces (30) parallel to each other at right angles to the lengthwise direction, and the crosspieces (30) are provided at both outer ends of the workbench (27). Since the receiving frame (31) is provided at the same height as the upper surface of the, the long processing member (32) can be placed on the receiving frame (31) for work.

(33) is a lower mold of the mold (6), (34)
Is a punch pin.

[0020]

EFFECTS OF THE INVENTION The invisible press of the present invention and the long object processing apparatus using the invisible press have the following features. 1: Press machine is upper structure (1) and lower structure (2)
The upper structure (1) is configured to move up and down with respect to the lower structure (2) by separating the upper structure (1) and the lower structure (2). Since it can be lowered, when the long working member (32) is continuously processed on the same workbench (27), the unnecessary other hidden press (26) does not get in the way. Therefore, the work efficiency is good and the total processing cost can be reduced.

2: The hydraulic mechanism (8) of the press machine called on the workbench (27) by the pneumatic lifting lever (20).
Only the hydraulic mechanism (8) of the covert press (26) that operates in response to the pressing of the foot switch (23) and descends and sinks.
Has electrical wiring so that it will not work, so even if you accidentally step on the foot switch (23) during work, another press (26) that is descending and substituting will operate, causing an unexpected disaster. There is no fear.

3: Conventionally, when a large number of press work is performed on a long work member (32), a large number of press machines are arranged in a large factory, and the long work member (32) is provided for each work. In addition to having to move between a large number of press machines to perform work, not only time and effort are required for the work, but also it is an obstacle to other workers and efficiency can be improved. I could not do it. With the workbench (27) of the present invention, a large number of press work can all be performed on a single workbench (27), so that not only the work efficiency is good, but also the operator's fatigue is small and the factory site is small. It can be small. Therefore, the amount of capital investment can be small and the product cost can be reduced.

4: Since a plurality of presses are arranged on both ends and the center of the workbench (27), there are two types of presses at both ends, which are the most common in the case of processing a long processing member (32). The center part can be processed most efficiently and the work can be done quickly. Therefore, it can be processed at the lowest cost.

5: The receiving frames (3
1), the member (32) can be slid over the receiving frame (31) when the long processing member (32) is processed, so that the member (32) collides with the submerged invisible press (26), There is no need to worry about damaging this, and the work is easy.

[0025]

[Brief description of drawings]

FIG. 1 is a perspective view of an invisible press according to the present invention.

FIG. 2 is a side view showing a use state of the invisible microscope press of the present invention, showing a state in which one of the two invisible microscope presses on the right side is raised and the other on the left side is lowered. thing.

FIG. 3 is a perspective view of a long product processing apparatus using the invisible press of the present invention.

[Fig. 4] Similarly, an electrical wiring diagram.

[0026]

[Explanation of symbols]

1 ・ ・ ・ ・ ・ ・ Upper structure 2 ・ ・ ・ ・ ・ ・ ・ ・ Lower structure 3 ・ ・ ・ ・ ・ ・ ・ ・ Lower plate 4 ・ ・ ・ ・ ・ ・..Struts 5 ... Upper plate 6 ... Die-set mold 7 ... Mold spring 8 ...・ ・ ・ ・ ・ ・ Hydraulic mechanism 9 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Hydraulic plunger 10 ・ ・ ・ ・ ・ ・ ・ ・ Upper mold 11 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Hydraulic hose 12 ・ ・・ ・ ・ ・ ・ ・ ・ ・ Substrate 13 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Post 14 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Cradle 15 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Pneumatic cylinder 16 ・・ ・ ・ ・ ・ ・ ・ Slide bush 17 ・ ・ ・ ・ ・ ・ Pneumatic cylinder rod 18 ・ ・ ・ ・ ・ ・ Slide bush ・ Shaft 19 ・ ・ ・ ・ ・・ ・ ・ ・ ・ Scrap discharge cylinder 20 ・ ・ ・ ・ ・・ ・ ・ ・ Pneumatic lift lever 21 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Limit switch 22 ・ ・ ・ ・ ・ ・ Hydraulic solenoid valve 23 ・ ・ ・ ・ ・ ・ Foot switch 24 Power Supply 25 Power Switch 26 Invisible Press 27 Work table 28 ... front cover plate 29 ... work surface 30 ... crosspiece 31 ...・ ・ Receiving frame 32 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Long processing member 33 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Lower mold 34 ・ ・ ・ ・ ・ ・ ・ ・ Punch pin H ・ ・ ・・ ・ ・ ・ ・ ・ ・

Claims (2)

[Claims] 1. A press used for plastic working of metals and plastics, wherein an upper plate (5) is parallel to the lower plate (3) by four columns (4) on the lower plate (3). A hydraulic mechanism (8) which is fixed, inserts and holds a die-set type mold (6) between the lower plate (3) and the upper plate (5), and is attached to the outside of the upper surface of the upper plate (5).
The upper structure (1) for pressing down the die (6) by means of the above, and the pedestal (14) parallel to the substrate (12) by the four columns (13) on the substrate (12). Fixed to the substrate (12)
A plurality of pneumatic cylinders (1
5) and a plurality of ball bearing slide bushes (16) are installed, and the pneumatic cylinder rod (1
7) and slide, bush, shuttle (18),
The upper end of the pneumatic cylinder rod (17) and the upper end of the slide bushing shaft (18) are made to project vertically above the pedestal (14) so that the upper structure (1).
A lower structure (2), which is fixed to a lower plate (3) of the upper structure (1) so that the upper structure (1) can be freely moved up and down by a pneumatic cylinder rod (17), and an upper structure (2). 1) a lower waste plate (3) protruding downward from the lower plate (3), the lower end of which opens to the lower surface of the cradle (14) of the lower structure (2), and the upper structure (1). Pneumatic cylinder (1
A limit switch (21) for opening and closing the electric circuit of the solenoid valve (22) of the hydraulic mechanism (8) by sensing the movement of the lifting lever (20) of 5) and the upper structure (1), and a power supply. (24) Foot switch for opening and closing the circuit (23)
And the Invisible Press. 2. An apparatus for processing a long product using an invisible press according to claim 1, wherein a plurality of invisible presses are provided at both ends and at the center of a workbench (27) which is long in the lateral direction. 26) are installed adjacent to each other in a group form, and each of the invisible presses (26) has a work surface of the upper structure (1) at a position where the upper structure (1) is lifted. ), The elevation height (H) of the upper structure (1) is determined so that it coincides with the work surface (29) of the upper structure (1). At the position corresponding to (26), the same number of pneumatic lifting levers (20) as the number of invisible presses (26) are installed, and the required number of feet for opening and closing the electric circuit of the hydraulic solenoid valve (22) are installed on the floor surface. A switch (23) is arranged to connect the electric circuit of each hydraulic solenoid valve (22) and the limit switch (21). After connecting the individual hydraulic circuits in series, the electric circuits of all the hydraulic solenoid valves (22) are connected in parallel, and the power switch (24) circuit in which each foot switch (23) is connected in parallel, and the hydraulic solenoid valve (22). By connecting with the electric circuit of
By stepping on the foot switch (23) at an arbitrary position, only the covert press (26) that is raised and is in the working position can be operated, and the upper surface of the workbench (27) has a longitudinal direction. Crosspieces (30) parallel to each other are provided at right angles to each other, and a receiving frame (30) having the same height as the upper surface of the crosspiece (30) is provided at both outer ends of the work table (27).
A long object processing device using a hidden press.