JPH0428480B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a double frame structure consisting of a main frame that receives a press load and a sub-frame dedicated to attaching equipment, which are arranged in a non-contact state with each other. Regarding press machines.

[Prior Art] The general structure of a conventional press machine will be explained using FIG. 5 (front view) and FIG. 6 (right side view).

In the figure, a press machine 100 has a single frame structure in which a crown 1, a column 2, and a bed 4, which are arranged from top to bottom, are tightened and fixed together with tie rods 3.

Inside crown 1 are the motor, flywheel,
It has a built-in drive mechanism consisting of a clutch, brake, crankshaft, etc. The slide 5, which is vertically slidably guided by the columns 2, 2, is moved up and down by this drive mechanism.

In addition, the bed 4 has a bolster 6 to which the lower mold is attached.
is mounted, and one upper die is attached to the slide 5. Openings H are provided at the front and rear of the left and right columns 2, 2 (in the direction perpendicular to the plane of the paper in FIG. 5) for convenience of mold replacement work and to secure a movement area for the workpiece transport mechanism. 19 in FIG. 6 is a mold viewing window.

Furthermore, equipment is attached to the columns 2, 2. The equipment includes a main operation panel 25 for driving and controlling the motor, an air operation panel 26, a solenoid valve unit, and other oil pumps necessary for press operation.
This includes devices such as solenoid valves, limit switches, etc. Furthermore, a heavy deck 22A and a ladder 27A are fixedly attached above it.

By the way, in the press equipment 100, when the press work involves vibration, especially when punching work is performed at high speed, the impact and vibration are excessive, causing vibration pollution in the surrounding area. Therefore, a method is often used in which the press machine 100, that is, the entire frame structure is installed on the frame 9 via the vibration isolator 30A.

Examples of press machines having the same frame-integrated structure as described above include Japanese Utility Model Publication No. 53-11425 and Design Registration No. 527764.

[Problems to be Solved by the Invention] However, the above conventional structure has the following problems.

For large press machines with a press load of 1000 TON or more, the selection of the vibration isolator 30A is extremely troublesome and complicated, but if selected carefully, vibration pollution to the surrounding area can be prevented.

However, the equipment (25, 2) attached directly to the press machine 100 (for example, columns 2, 2)
6) It is not possible to prevent vibrations transmitted to As a result, equipment failures and damage occur.

This problem will be completely solved as further automation and labor-saving are required, and as equipment becomes more sophisticated, complex, and miniaturized (for example, the main operation panel 25 is replaced with an electronic circuit such as a transistor or IC from an electromagnetic relay circuit). This is becoming an important issue that must be addressed.

On the other hand, as a vibration prevention measure from the equipment side,
It is practiced that each piece of equipment is individually attached to the press bodies 2, 2 via a vibration isolating table using anti-vibration rubber or the like.

However, according to this plan, equipment 25, 26
The number of them is large and increasing, and their individual sizes and shapes also vary greatly. Therefore,
Selection of individual vibration isolation tables is troublesome, installation and adjustment work is difficult, and the cost burden increases. Furthermore, although vibrations can be alleviated, it is impossible to completely absorb them, so it cannot be called a drastic measure.

As a result, it becomes necessary to modify each mounting position and mounting method. In other words,
The entire press machine becomes larger than necessary, and the rigidity of some parts must also be increased, which is a great disadvantage. This has the disadvantage of further increasing the size of the vibration isolator 30A.

In contrast, it is conceivable to attach equipment such as electronic circuits that are particularly susceptible to vibration to the wall of the building in which the press machine 100 is housed. However, this not only causes problems with driving operations, but also
The cost increases significantly due to the length of the piping.

In addition, Japanese Utility Model Publication No. 41-12559 discloses that two or more steel plates 2 with their centers cut out are vertically installed in parallel, and the cut-out portions (notches 1) are used. An impact machining body is provided, consisting of a workbench 5 on which the workpiece is placed, and a ram portion 7 placed above the workbench 5. In order to ensure the center position of the body, the four corners of the body are sloped. A support structure is disclosed in which the holding fittings adjustable on the side of the steel plate frame 2 are also provided with slopes so that the center position of the main body can be easily secured by adjusting the setting of the holding fittings.

That is, it has a structure in which a processing table 5 integrated with a main body peripheral wall 6 is disposed on a steel plate frame 2 with a notch 1.

However, even with this new support structure for the impact processing main body, the entire structure is attached to the bottom plate 17 by the shock absorber 4, so the overall shape and dimensions cannot be reduced and the equipment cannot be vibration-proofed.

Further, Japanese Patent Publication No. 55-11440 discloses a press that is installed on a soundproof frame 4 via a vibration isolation mechanism 3 made of an air spring at a position above the center of gravity of the press body 1. The soundproof frame 4 is in a relationship to support the press body 1. That is, it is supported by the soundproof frame 4 together with the exterior pallet 2 via a plurality of roller guides 8 . Moreover, the accessories 11, 12, and 13 are attached to this soundproof frame. Therefore, from the point of view of vibration, the press body 1 and the soundproof frame 4 are integral, so it is not possible to dampen the equipment and it is not possible to downsize the press body 1.

SUMMARY OF THE INVENTION An object of the present invention is to provide a press machine with a double frame structure that completely prevents vibration pollution to the surrounding area and vibration-proofs equipment, and can reduce the overall size.

[Means for Solving the Problems] The present invention achieves the above object by comprising a main frame that directly receives a press load and a sub-frame that is unrelated to the press load.

That is, the present invention provides a main frame in which a crown with a built-in crankshaft, a pair of left and right columns for vertically slidingly guiding a slide, and a bed on which a bolster is mounted are integrally tightened with four tie rods;
A vibration isolator is installed between the main frame and the pedestal to prevent vibrations caused by the press load from being transmitted to the pedestal, and is installed at the four corners of the main frame and at positions avoiding the front and rear openings of the main frame. It includes four pillar members erected without contact with the main frame, and these pillar members are integrally connected by an upper deck, and a sub-frame is installed directly on the pedestal, and a sub-frame is attached to this sub-frame. This press machine has a double frame structure and is equipped with flexible cables and tubes that connect equipment and the main frame.

[Operation] According to the present invention having the above configuration, the press load is received by the main frame and absorbed by the vibration isolator. Therefore, vibration pollution to the surrounding area can be prevented.
In addition, the main frame only needs to have a structure that can receive press loads, and there is no need to attach other equipment, so the size can be reduced.

On the other hand, the sub-frame is independent and non-contact with the main frame, so vibrations caused by press loads are avoided.
There is no vibration from the main frame itself. Therefore,
There is no need to take individual anti-vibration measures for the equipment, and it is sufficient to simply attach it to the sub-frame, eliminating any failures or damage caused by press load vibration. Vibrations between both frames are relaxed and absorbed by flexible cables, etc., and are not transmitted to the sub-frame.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 4, the press machine 100 with the double frame structure includes a main frame 10 that directly receives the press load, a vibration isolator 30 for the main frame 10, and a main frame 10 that receives the press load, that is, the main frame 10. is an independent and unrelated subframe 20, and this subframe 2
The main frame 10 is equipped with a tube 40 that connects the main frame 10 with the equipment 25, 26 attached to the main frame 10, which prevents vibration pollution to the surrounding area, downsizes the main frame 10 that is subject to press loads, and completely protects the equipment. It is structured so that both problems can be solved at once.

First, the main frame 10 receives the press load directly, and as shown in FIGS. (see) tie rod 1
It is a one-piece piece that is tightened and fixed in step 3. That is, it is formed to include a drive mechanism built into the crown 11 and a power transmission member including the slide 15.

The upper crown 11 houses a motor, a flywheel, a clutch/brake, a crankshaft, etc., and the slide 15 shown in FIG.
2 and 12 via a gib or the like so as to be vertically slidable. Further, a bolster 16 to which a lower die is attached is placed on the upper surface of the bed 14 in which a dictation device and the like are housed. The upper die is attached to the lower surface of the slide 15 so as to face the lower die.

That is, the main frame 10 only needs to be equipped with devices that are directly necessary for press working, and the main frame 10 can be made smaller and lighter.

Therefore, a large impact that occurs when pressing is performed by moving the slide 15 up and down and working together with the upper die and the lower die is directly transmitted to the main frame 10.

In order to absorb this vibration, the main frame 10
is attached to a pedestal 9 installed on a foundation surface via a known vibration isolator 30, as shown in FIG. This is to prevent vibration pollution to the surrounding area.

Further, as shown in FIGS. 1 and 4, the main frame 10 has a structure in which the crown 11 and the bed 14 are connected via a pair of left and right columns 12, 12, and the main frame 10 has a structure in which the crown 11 and the bed 14 are connected via a pair of left and right columns 12, 12, and the front and rear (in the vertical direction in FIG. 3) ) is open (opening H) so that the slide 15 and bolster 16 can be seen from the outside, as shown in FIG. Therefore, the upper and lower molds can be exchanged from the front and rear, and a movement area for the mechanism for supplying and discharging blanks and products can be secured.

Incidentally, in this press machine 100 (main frame 10), in order to facilitate the replacement of the molds (upper mold, lower mold), the entire press machine 100 is not covered with a soundproof cover as in, for example, Japanese Patent Publication No. 11440/1983. . This is because even if it is covered with a soundproof cover, no soundproofing effect can be expected due to the magnitude of the press load. Moreover, this has the disadvantage of causing an increase in internal temperature and reducing press working accuracy.

Now, as shown in FIGS. 3 and 4, one of the sub-frames 20 has four frames installed upright at the four corners of the main frame 10 and at positions avoiding the front and rear openings H and H of the main frame 10. and a deck 22 with a handrail that connects the upper ends of these support members 21.
(See FIGS. 1 and 3).
Further, as shown in FIG. 2, a ladder 27 for climbing up to the deck 22 is also provided.

This sub-frame 20 as a whole includes the vibration isolator 3
0, that is, it is independently erected on the pedestal 9 without being connected to the main frame 10. Moreover, the main frame 10 is disposed at an appropriate distance so that a non-contact state can be maintained. In this embodiment, each support member 21 and deck 22 are arranged with a space of 30 mm from the main frame 10.

Therefore, no press load is transmitted to the sub-frame 20 either directly or indirectly.
Furthermore, vibrations of the main frame 10 due to press loads are not transmitted.

Thus, vibration-sensitive pumps, tanks, solenoid valves, limit switches, rotary cam switches,
Wiring, piping, etc., main operation panel 25, pneumatic operation panel 26
Equipment necessary for press operation and control, such as various operation panels, including various operation panels, are attached to the sub frame 20, and these equipment and the main frame 10 are connected via flexible cables and tubes 40 (see Fig. 2). They are connected and isolated from vibrations during press processing.

According to this embodiment, the main frame 10 (11, 12, 13,
14, 15, 16) are attached to the pedestal 9 via the lower vibration isolator 30, and the accessories 25, 26 are attached to the sub-frame 20, which is installed directly on the pedestal 9 without being connected to the main frame 10, and both 10, 20 are connected by flexible cables 40, etc., so it is possible to prevent both vibration pollution to the surrounding area and vibration isolation of equipment at the same time, and the main frame (press body) 10 itself is more compact than the conventional structure. It can be made smaller and lighter.

Moreover, the main frame 10 and the sub frame 20 are
Since they are arranged at appropriate intervals, the main frame 1 based on the press load as well as the press load
Even zero vibrations are not transmitted to the sub frame 20. This will eliminate malfunctions and damage to equipment.

Further, the sub frame 20 includes four parts of the main frame 10.
The structure includes four pillar members 21 that are erected at the corners to avoid the front and rear openings H of the main frame 10, making it easy to replace the molds of the press machine 100 and supply and discharge blanks and products. There is no problem in securing the movement area of the mechanism.

Furthermore, since the equipment is attached to the vibration-free sub-frame 20, it can be fixed at a convenient location without using a separate vibration-isolating stand. Therefore, installation work is easy, operation is easy, and costs can be reduced.

Furthermore, since the sub-frame 20 is provided with a deck 22 and a ladder 27, maintenance and inspection of internal components such as the motor in the crown 11 are facilitated, and
Further, in conjunction with the reduction in size and weight of the main frame 10, the weight of the subframe 20, accessories 25, 26, etc., deck 22, ladder 27, etc. can be reduced, thereby making it possible to significantly reduce the size of the vibration isolator 30.

[Effects of the Invention] As described above, according to the present invention, the main frame that directly receives the press load is attached to the pedestal via a vibration isolator, while the four columns on which equipment necessary for press operation and control are attached are attached. Since the sub-frame made up of the members is directly attached to the frame without contacting or unrelated to the main frame, and the two are connected by a flexible cable or the like, it has the following excellent effects.

(1) The main frame that bears the load is completely vibration-proofed, preventing vibration pollution to the surrounding area.

(2) Since the sub-frame that houses the equipment is in non-contact with the main frame with a spacing of approximately 30 mm, vibrations are not transmitted and equipment can be equipped without the need for individual vibration isolation stands. Not only is this easier, but there are fewer failures and the lifespan is longer.

(3) Since the shapes and dimensions of the main frame and the sub-frame can be reduced to the necessary minimum, the overall size can be made relatively small.

(4) Since the main frame and sub-frame are placed close to each other, cables and tubes can be shortened. Moreover, since the cables and the like are flexible, vibrations are not transmitted to the sub-frame.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a right side view, FIG. 3 is a plan view, and FIG.
The figure is a cross-sectional view based on the arrow line - in FIG. Further, FIG. 5 is a front view of the conventional example, and FIG. 6 is a right side view thereof. 1... Crown, 2... Column, 3... Tie rod, 4... Bed, 5... Slide, 6... Bolster, 9... Mount, 10... Main frame, 11
... Crown, 12 ... Column, 13 ... Tie rod, 14 ... Bed, 15 ... Slide, 16
... Bolster, 20 ... Sub-frame, 21 ... Strut member, 22 ... Deck, 25 ... Main operation panel (equipment), 26 ... Air operation panel (equipment), 27 ...
Ladder, 30... vibration isolator.

Claims (1)

[Scope of Claims] 1. A main frame formed by integrally tightening a crown with a built-in crankshaft, a pair of left and right columns that vertically slidingly guide a slide, and a bed on which a bolster is placed, with four tie rods; A vibration isolator is installed between the main frame and the pedestal to prevent vibrations caused by the press load from being transmitted to the pedestal, and is installed at the four corners of the main frame and at positions avoiding the front and rear openings of the main frame. It includes a sub-frame that is installed directly on the pedestal and that includes four pillar members that stand upright without contact with the main frame, these support members are integrally connected by an upper deck, and a sub-frame that is attached to this sub-frame. A press machine with a double frame structure, comprising: flexible cables and tubes that connect equipment and the main frame;