JPS5852037Y2 - Vacuum suction fixture for fixing workpieces - Google Patents

Description

[Detailed description of the invention] The present invention relates to a fixture used to fix a workpiece when machining a workpiece with a relatively wide machining surface.
Using vacuum suction, attachment and detachment of the adherend is facilitated, and fixation in a fixed position can be performed extremely easily.

Next, to explain the details with reference to the drawings, in Figs. 1 and 2, 1 is a base plate, 2 is a large number of mounting holes arranged at appropriate intervals in the vertical and horizontal directions, and 3 is a supporting member 4 in an appropriate position.
The height of the suction cup 3 can be adjusted by means of a screw 4' of the support member 4.

Each suction cup 3 is connected by a hose 5 to a pressure reducing device 6 containing an air ejector pump.

6a is the pressure gauge for the ejector pump, 6bu vacuum gauge, 6
c is the vacuum side filter, 6d is the vacuum-normal pressure switching valve operation switch, and the ejector pump in the vacuum device 6 is connected to the connection port 6e.
It is connected to a compressor in a workplace, etc., and the inside of the vacuum system is maintained at a predetermined degree of vacuum by an automatic valve device, etc.

6f is a power switch of the device.

Reference numeral 7.7' denotes a positioning stopper rod and support rod that are fixed at required locations around the base plate 1 through mounting holes 2, 2 in a substantially opposing manner, and the upper edge of the stopper rod T has an angular cross-section. A notch is formed to form a locking edge 1a for locking an adherend, and a restraining plate 8 is attached to the upper end of the support rod γ with a set screw 9.

To fix a workpiece to this fixture, first fix the stopper rod 7 and the support rod 7' to the mounting holes 2 at appropriate positions according to the outer peripheral shape of the adherend A, and then attach the suction cup 3 to the support member 4. The head of the mounting screw 3a inside the suction cup 3 is adjusted to be at the same height as the surface of the stopper rod 7 on which the adherend is placed.

This adjustment can be done, for example, by moving the adherend A to the stopper rod 7 and the support rod 7.
This can be easily done by adjusting the height of each suction cup while placing it on the mounting surface of 1 and slightly pressing it downward, and bringing the head of the mounting screw 3a into contact with the adherend A.

Next, lightly tighten the setscrews 9 of the retainer plate 8 to determine the position.
If the changeover valve switch 6d is operated to reduce the pressure inside the suction cup 3,
Since the adherend A is sucked by the suction cup 3 and fixed at a fixed position on the base plate 1, processing such as drilling and shaping can be performed.

After processing, loosen the set screw 9 and operate the selector valve switch 6d to return the inside of the suction cup 3 to normal pressure, and the adherend A'
Since it can be removed extremely easily, the next adherend can be sequentially attached and fixed in the same manner as described above.

The suction by this suction cup is extremely strong, so normally, after placing the adherend A on the stopper rod 7 and the support rod 7', it can be held down by simply suctioning it with one hand in the direction of one of the stopper rods 7. The position in the front, rear, left and right directions can be easily determined without using the plate 8 or the like.

Fig. 3 and Fig. 4 show an example of a fixture that can be used extremely conveniently when the lower surface of the adherend has unevenness or an inclined surface. A compression spring 10 is interposed therebetween, and a suction cup which can be tilted back and forth and left and right by a ball joint 11 is used at a position corresponding to the inclined surface of the adherend B.

Numeral 12 is a set screw for fixing the suction cups 3, 3', etc. to the support member 4. This set screw 12 is extended by a flexible shaft 13 at an appropriate position 1 around the base plate, and a handle 14 is fixed to the end thereof. ing.

(Figures 5 and 6). Reference numeral 15 denotes a support fitting for the end of the flexible shaft 13.

To explain how to use this fixture, first, as in the previous example, align the stopper rod 7 and the support rod 7' with the adherend B, and
Support members 4, 4 such as suction cups 3, 3 are arranged and fixed on the top.
'... are arranged and fixed in the mounting holes 2 at the required positions.

Next, place the adherend B on the stopper rod 7 and the support rod 7', hold it down lightly, and loosen the set screw 12 with the handle 14. It rises due to the pressure and comes into contact with the lower surface of the adherend B, so if the selector valve switch 6d is activated at this time to reduce the pressure on the suction cups 3 and 3', the suction cups 3 and 3' will be attracted to the adherend B, At 1, the head of the set screw 3a+3a' of the pad comes into contact with the adherend B, and the pad further rises.

Therefore, at this time... by twisting the handle 14 and tightening the set screw 12, the suction cups 3, 3' are fixed to the support member 4 at that position, and the height can be determined. Since body B is completely fixed on base plate 1,
Thereafter, in the same manner as in the previous example, force transfer and exchange of workpieces can be performed.

Moreover, according to this device, even if there are variations in the unevenness etc. of each adherend B, when suctioning the suction cups 3 and 3', the set screw 1
By loosening and re-tightening 2, the height of the suction cup can be adjusted in response to changes in the unevenness.

Figure 7 shows an example of a suction cup that can be adjusted in height and tilted freely;
The pad 3b' is attached to the tilting part 3c/ of the ball joint 11' with a set screw 3I, and the joint base 3I is slidably fitted into the support member 4 and is pressed upward by the compression spring 10'. The head of the set screw 12 is fitted into a notched groove 16 provided in the joint base 3d', and the suction cup can be moved up and down within the notched groove 16.

A spring 17 returns the tilting head 30' to its normal position.

Figures 8 to 10 show an example of mounting the stopper rod 7 and the support rod 7'.The base plate 1 has mounting holes 2゜2... and grooves 18, 18U... at predetermined intervals. Installed horizontally and vertically,
The bottom surfaces of the stopper rod 7 and support rod T' are provided with protrusions 19, 19 that fit into the grooves 18, and due to the engagement of the protrusions 19 and the grooves 18, the stopper rods are held in a predetermined position without rotating. It can be installed in any position.

The protruding strip 19 may be provided only on one side of the bottom surface of the stopper rod.

As described above, the fixing device of the present invention fixes the support rod γ and the stopper rod 7 having the locking edge 7a on the upper edge at required locations around the base plate 1, and attaches the support rod 7' and the stopper rod 7 onto the support rod 7' and the stopper rod 7. An adherend, which is a workpiece, is positioned and placed on the locking edge 7a, and suction cups 3, 3, . is brought into contact with the adherend, and the suction cups 3, 3, . Because the workpiece is fixed to the position, attachment and detachment of the adherend can be done extremely quickly with one-touch operation, and it can always be firmly fixed in the predetermined machining position, which allows workpieces of the same shape to be machined one after another. In addition, as mentioned above, a large number of mounting holes 2, 2, etc. are arranged at appropriate intervals on the upper surface of the base plate 1, and the support rod 7' and the stopper rod 7 are inserted into the mounting holes 2. Since the support member 4 etc. of the button and suction cup 3 are attached,
By appropriately selecting the mounting holes 2, it has practical effects such as being able to quickly respond to workpieces with different sizes, shapes, etc.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a plan view, Fig. 2 is a front view, Fig. 3 is a plan view showing another embodiment, Fig. 4 is a front view of the same, and Fig. 5 is a stop view. FIG. 6 is an enlarged plan view of the screw operation handle, FIG. 6 is a front view thereof, FIG. 7 is an enlarged vertical sectional view showing an example of a suction cup, and FIGS. 8 to 10 are enlarged examples of how to attach a stopper rod support rod, etc. 8 is a partial plan view of the base plate, FIG. 9 is a longitudinal sectional view thereof, and FIG. 10 is a partial longitudinal sectional view of the stopper rod. In the diagram, 1... Base board, 2, 2'... Mounting holes, 3, 3'
... Suction cup, 4... Support member, 5... Hose, 6...
... Vacuum device, γ... Stopper rod, γ... Support rod, 10,1σ... Compression spring, 11... Ball joint, 12
... Set screw, 13 ... Flexible shaft, 14 ... Handle.

Claims (1)

[Scope of utility model registration request] A stopper rod is provided with a large number of mounting holes 2, 2... arranged at appropriate intervals on the upper surface of the base plate 1, and has support rods 7' formed at required locations around the base plate 1 and a locking edge 7a on the upper edge. 7 is fixed through the mounting hole 2, and a plurality of suction cups 3, 3, . . . are installed in the mounting holes 2, 2, . The suction cups 3, 3, . A vacuum suction type for fixing workpieces configured to fix the adherend onto the stopper rod 7 and the support rod 7' by connecting ゜3... to the same pressure reducing device 6 via a switching valve to reduce the pressure. Fixture.