JPS6338030Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a material support device in a punch press, and more specifically, it is equipped with an air-float type free ball bearing that does not damage the surface of the material when moving the material for processing by the punch press. The present invention relates to a material support device.

Conventionally, so-called free ball bearings have been widely used as a support device for moving materials to the processing position of a punch press. The ball of this free ball bearing has the feature that it can respond to the movement of the material it supports in all directions, and even though there is no problem with the material being supported by rolling friction, the bottom of the ball is between the ball seat and the ball seat. It had a structure that supported the load through sliding friction.

Therefore, a supply of lubricating oil is essential, and if there is poor lubrication, in extreme cases, the ball will no longer rotate, and the rolling friction between the material and the ball will be replaced by sliding friction, causing damage to the surface of the material. It was hot. However, punch presses handle relatively wide plate materials,
When a large number of free ball bearings are installed and the load surface pressure is low, complete maintenance is difficult due to the generation of dust and chips, which causes sliding friction between individual balls and ball seats. Scratches appeared on soft surfaces such as aluminum plates and painted plates, reducing the value of the product.

As mentioned above, the present invention has been developed to overcome the disadvantages especially in the material support device of a punch press, and preferred embodiments thereof will be described in detail below with reference to the drawings.

Fig. 1 shows a front view of a turret type automatic punch press as an example of implementing the present invention. An upper turret 7 supported on the machine frame and rotatable, and a lower turret 9 supported on the lower machine frame and freely rotatable are provided horizontally apart from each other. The die mold 13 is provided on the circumference of the turret in correspondence with the punch mold 13, and the upper turret 7 and the lower turret 9 are rotated and positioned synchronously while being separated from each other, and a desired pair of the punch mold 11 and the die mold 13 is formed. Striker 17 attached to the lower end of the ram 15 of the press
Place the punch die 11 and die die 13 directly below the
This processing machine performs a punching process on the material 19 placed between the two.

FIG. 2 is a sectional view taken in the direction of the - arrow in FIG. 1, with the left and right column portions of the machine frame 3 omitted and mainly showing a table provided with a large number of air float type free ball bearings 21.

The first fixed table 23 is shown on the left side of the lower turret 9 in FIG. 9 is maintained at a plane (referred to as a material transfer plane 27) that is, for example, 2.0 mm higher than the connecting pass line plane 25.

Next, an air float type free ball bearing 21b is provided in the center of the lower turret 9 and rotates together with the die mold 13, but as shown in FIG. By means of the hydraulic cylinder 31, the upper part of the ball can be placed at one of two levels: the pass line plane 25 and the material movement plane 27.

A second fixed table 33 is arranged on the right side of the lower turret 9 in FIG. Many rows of air float type free ball bearings 21c are provided. (21 and 29 shown above with suffixes are similar to the base 29 or the same air float type free ball bearing 21.
However, they are shown separately because the shape of the base is different and the level of rise and fall is different. ) The ball bearing 21c described above allows the height of the apex of the ball to be selected from two positions: the material movement surface 27 and a position lower than the top surface of the table 33, and the gripping claws described later move closer to the lower turret 9. It is composed of guide posts and fluid pressure cylinders so that they do not interfere with each other during the process, and each row is submerged. (Illustrations omitted) Among the above-mentioned ball bearings 21c, two air float type free ball bearings 21 are arranged within, for example, 300 mm from the die mold 13.
d is equipped with a fluid pressure cylinder and a guide post overlappingly on the base 29c, and when the other ball bearing 21c is located on the material movement surface 27, it descends to the pass line surface 25 and moves the material during processing. When the material is pressed against the upper surface of the die 13, a difference of 2.0 mm is created in the above example, which acts to relieve bending stress on the material.

Furthermore, the lower turret 9 is a second fixed table 33.
Air float type free ball bearings 21a, which do not move vertically at all, are provided on the left and right portions (upper and lower in FIG. 2) adjacent to the bearings. This is the same as the bearing provided on the first fixed table 23, and the upper surface of the ball always remains aligned with the material movement surface 27.

The two tables sandwiching the second fixed table 33 in the X-axis direction are movable tables 35,
As shown in Fig. 1, the machine frame 3 of the punch press 1
It is guided by a guide bracket 37 and a guide rail 39 provided above the guide bracket 37 in the horizontal part below the frame, and is movable in the Y-axis direction.

Left and right movable table 35 and second fixed table 3
A carriage base 41 is provided which straddles and connects the left and right movable tables 35 and the carriage base 4, which is driven by an electric motor 43 shown in FIG.
1 is integrally moved and positioned by numerical control in the Y-axis direction.

The above-mentioned carriage base 41 is provided with a horizontal guide mechanism 45, and an electric motor 47 moves the
A carriage 49 is provided which can be moved and positioned numerically in the axial direction.

The carriage 49 is provided with material gripping claws 51 for gripping and moving the material.

As mentioned above, since the left and right movable tables 35 move integrally with the carriage 49 in the Y-axis direction,
A free ball bearing is not required on the movable table 35, and a roller 53 is rotatably provided to support the load when moving the material only in the X-axis direction. However, when the material 19 is newly moved onto the second fixed table 33 or the left and right movable tables 35, or when the finished product is moved and carried out on the table, it must be possible to move it in the Y-axis direction as well. Roller 5 of left and right movable table 35
Between 3 and 3 is a fluid pressure cylinder 5 as shown in FIG.
5 and a guide post 57, an air float type free ball bearing 21e is provided on the base 29e.

The above-mentioned roller 53 is fixed in position, and the upper surface of the roller is aligned with the material moving surface 27, and the free ball bearing 21e has the top of the ball protruding higher than the material moving surface 27 as necessary.
While the carriage 51 is gripping the material, it sinks lower than the upper surface of the roller and waits.

The apparatus of this embodiment described in detail above is installed on the material movement and positioning table of a punch press, and includes a movable table, a second fixed table, a first fixed table,
A type that is used at the center of the die mold and whose height level remains unchanged.
Since it is equipped with a device that can be used at two height levels, the large number of air-float free ball bearings rotate lightly due to rolling friction, which prevents damage to the surface of the soft material. It is played.

As can be understood from the above description of the embodiments, the gist of the present invention is as stated in the claims for utility model registration. A pass line surface 25 and a pass line surface 2 that connect the upper surface of the die mold 13 are located at the center of the lower turret 9 supporting the mold 13 and at a position close to the lower turret 9.
Free ball bearings 21b and 21d are provided which are movable up and down between the material moving surface 27 which is higher than 5. Therefore, in the present invention, when the material is moved, the material is supported by the material moving surface 27 and does not come into contact with the upper surface of the die mold 13, thereby preventing scratches from being caused on the lower surface of the material. It is something.

In addition, in the present invention, the side table 35 that supports the material is provided with a roller 53 that supports the material on the material moving surface 27 and is rotatable in the same direction when the material is moved in the X-axis direction. On the table 35, the material is supported by line contact, and the surface pressure is small, so that even if the material is rapidly moved in the X-axis direction, scratches and the like will not occur.

Furthermore, in the present invention, the side table 35
is provided with a plurality of free ball bearings 21e that can freely protrude above the material transfer surface 27, so when carrying the material onto the side table 35, it is easy to carry the material onto the side table 35 without worrying about the rotation direction of the roller 53. It can be transported to

In other words, according to the present invention, the lower surface of the material does not come into contact with the die when the material is moved, and the contact surface pressure on the side table is reduced, making it possible to move the material at high speed and prevent scratches. It is something that never occurs.

[Brief explanation of drawings]

Fig. 1 is a front view of a numerically controlled automatic turret punch press shown as an example of a punch press equipped with the device of the present invention, Fig. 2 is a sectional view taken along the - sectional arrow in Fig. 4th cross-sectional view of the figure
The figure is a cross-sectional view taken along the - arrow in FIG. 2. Explanation of symbols representing main parts in the drawings, 1...
Punch press, 7... Upper turret, 9... Lower turret, 21a to 21e... Air float type free ball bearing, 23... First fixed table, 2
5...Pass line surface, 27...Material movement surface, 29b~
29d...Base, 33...Second fixed table, 35...
Movable table, 51... material gripping claw.

Claims (1)

[Scope of utility model registration request] A pass line surface 25 connecting the upper surface of the plurality of die molds 13 and a material movement higher than the pass line surface 25 are placed in the center of the lower turret 9 supporting a plurality of die molds 13 near the outer periphery and in a position close to the lower turret 9. A carriage 49 is provided with free ball bearings 21b and 21d that are movable up and down between the surface 27 and moves the material relative to the die mold 13.
A side table 35 that moves in the Y direction integrally with the
A plurality of rollers 53 are provided which support the material on the material movement surface 27 and are rotatable in the same direction when the carriage 49 moves in the X-axis direction, and a plurality of rollers 53 which can freely protrude above the material movement surface 27 are provided. A material support device in a punch press, characterized in that a ball bearing 21e is provided on a side table 35.