JPS61216829A - Riveting device - Google Patents

Abstract

PURPOSE:To drive properly and surely a rivet on the necessary position for the body to be worked by driving onto the body to be worked from the lower part under the vacuum action the rivet holding with suction the head part into the suction hole of the upper end of the pressing lever which is movable vertically against a work panel. CONSTITUTION:A rivet R is held on the recessed part 34' of pressing lever 34 with release of a shutter 30. A conducting body 35 itself is automatically pushed up, also the opening part 35' thereof is widened when the rivet R reaches the opening part 35' of the conducting body 35 with the ascent of the pressing lever 34 by the ascent of a guide lever 32. The rivet R is riveted onto the body to be worked in the state of being held at the prescribed position when the guide lever 32 is ascended by the prescribed distance. The proper and sure driving of the rivet on the necessary position of the body to be worked is thus enabled at all times.

Description

[Detailed Description of the Invention] 3-1 Industrial Application Field This invention is applicable to workpieces with narrow gaps, workpieces with complex shapes, and other cases where it is extremely difficult or impossible to rivet from above. The present invention relates to a rivet driving device that can appropriately and reliably perform rivet driving work by setting a part of the head downwardly and utilizing vacuum from below the workpiece.

3-2 Conventional technology The work of driving rivets into a conventional workpiece is similar to the
As shown in Figure C, a workpiece 4, for example, two plate-shaped bodies, is placed on an anvil 3 set on the bottom 2 of a C-shaped machine frame. The general method is to press the head 7 of a desired stud 6 by lowering the punching tool 5 which moves up and down. However, since the punching machine 5 suppresses and absorbs the head 7 of the rivet 6 from above, it is necessary to increase the size of the attachment mechanism (not shown), which may result in a slight slippage. In a confined space, a part of the sorption mechanism comes into contact with the workpiece 4 and becomes inoperable, making it extremely difficult or impossible to perform riveting work in narrow spaces. In addition, the middle layer W of the workpiece 4 may be too long and the reach β dimension of the punching tool 5 may make it impossible to drive rivets.Furthermore, the shape of the workpiece 4 is complicated Therefore, it is difficult to avoid drawbacks such as the impossibility of driving a rivet to a desired position more than once.

3-3 Problems that the present invention aims to solve I: Causes such as narrower spacing, insufficient reach, complex shapes, etc. C: Overcoming the bottlenecks in nail driving work based on It is an object of the present invention to provide a rivet driving device that can properly and reliably drive rivets into desired positions C2 of a workpiece.

3-4 Structure To describe one embodiment of the present invention with reference to FIGS. 1 to 5, four pillars 3 (first Although only two are shown in the figure, two in the front and back are considered, and the work board with an inverted U-shaped cross section is attached to the upper ends of these pillars 13] 4
While drilling a through hole in C, near the edge of this work panel 14,
A holding plate]6 is fixed to the upper ends of four guide rods 15 (same as the above-mentioned pillar 13) fixed upright, and the holding plate]6
Inside the hydraulic cylinder C, which is fixed upright and fixed approximately in the center of the cylinder, two sliding pistons (not shown) are tightly fitted, and a connecting piece a is hung down and formed at the lower end of the piston rod fixed to the lower surface of the piston. , While fitting the rectangular part at the upper end of this connecting piece a (nine-threaded rod) 8 to 0 tightness, fix the male screw S of the screw 418 and the lower part of the central protruding part Pζ of the lifting plate 19 so that the piston It can be raised and lowered integrally with the raising and lowering of the rod 17, and the vicinity of the edge of the lifting plate 19 is engaged with and penetrated by one of the guide rods 15, so that the lifting plate 19 can be vertically raised and lowered at all times.

The lower end of the threaded rod 20 which is screwed into the middle g of the lifting plate 19 is fixed to the spring receiver 21, and the spring receiver 21 is stretched between this spring receiver 21 and the recess V below the lifting plate]9. The coil spring 22 always elastically urges the lift plate 9 upward, and an anvil k is attached to the lower end of the support 23, which has an inverted U-shaped cross section and is fixed to the lower surface C of the lift plate 19 inside these screws Jm20. At the same time, the elevator plate 19
- Attach the support piece 25 to the lower end of the hanging screw plume 24.

A coil spring 26 stretched between the support piece 25 and the lifting plate 19 always springs and urges the lifting plate 9 upward. However, the screw 1i20. Spring receiver 2] Coil spring 22 and C-threaded rod 24° bearing piece 25. The members including the coil springs 26 are each referred to as a positioner E, and each of the workpieces fog is positioned at a predetermined position 1/ on the working plate 4.
g/.

A connection piece that is fixed and fixed upright on the base]2, and that fixes a connecting plate 27 to the upper end of the hydraulic cylinder 2 on the inside of the pillar [3], and fixes and stands upright on the end of the connecting plate 27. The upper end of 28 is attached to the lower surface C of the work panel 14, while a through hole ic of a bush 29 added in the middle of the connecting piece 28 is fitted with a guide culm 32, which will be described later, so as to be able to rise and fall freely. Connection piece 2
A shutter 3 is installed at the tip of the through hole U, which is drilled 52 above 8.
0 is attached to the chute m, and is communicated with the rivet supply case 31, which is the root of the chute m, and a horizontal feeder n can be vibrated directly below the horizontal point of the chute m. A guide culm 32 is provided on the upper surface of a piston (not shown) that is tightly fitted into the hydraulic cylinder 2 so as to be able to rise and fall freely.
A through hole q' of a mounting piece q fixed above the guide culm 32 is connected to a vacuum source l (not shown) via a pipe 33, and a suction hole y whose lower end communicates with this through hole q is connected. Press the lower end of J134.

A pair of opposing outer covers 41 are fixed and erected on the upper surface of the mounting piece q and cover the pressing rod 34 and the guide culm 32.
41, and near each of these bendable ends t
: Pass both ends of the threaded rod 37 through the holding pieces 38.38 placed on the upper surface of the bushing 29, and tighten the respective nuts 39.3.
Coil spring 4 that can be screwed together and tightened with 9 and wound around a screw rod 37
0, the lower part of the outer cover 41, 41 is constantly biased to suppress the inner wall surface of the holding piece 38. 35' is normally opened to such an extent that the body j of the rivet is in close contact with it, and as the pressing force 434 is increased, the workpiece f2 of the head t of the rivet is opened.
It expands when penetrating to g, and after the riveting work is completed - 121 again
i! It is possible to return to the solid line position of Kl, and the above-mentioned shoe) m (: a continuous supply path 36 The lower end of the stud R is opened, and the head t of the stud R can be placed in the arcuate recess 34 formed at the upper end of the presser 834.

In the vicinity of the shutter 30, when a proximity switch (not shown) is set and the press 1A34 detects that there is no stud R at the solid line position of jltlJ, the shutter 30 is opened by an electric signal 21-, and - When the rivet R is fed into the supply path 365 and held in the recess 341 of the pressing rod 34, a proximity switch (not shown) issues an operating command to the vacuum pump, starts driving, and maintains the suction action during the rivet driving operation. After the work is completed, the suction action of the vacuum pump is stopped. The arrangement of these devices makes it possible to return the pistons in the hydraulic cylinders C and Zt to their original states.

Since the function, structure, etc. are not the purpose or gist of the present invention, they are omitted. In the figure, S is a predetermined distance when the anvil is raised and lowered, and S is a predetermined distance when the guide culm 32 is raised and lowered.

3-5 Effects Since this invention has the above-mentioned configuration, the rivet supply 1×3
The required number of sounds of the phantom rivets R stored in 1 are sent to n21-tm, and halfway there, by the vibration of the horizontal feeder n, they are conveyed one by one to the position of the shutter 30, and the shutter 30 is At position 30, since the proximity switch ≦2, the shutter 30 is opened and one stud R passes through the supply path 36 and presses J! i3
It is held in the recess 341 at the upper end of 4. At this time, the vacuum pump is activated by the proximity switch, and the stud R is sucked into the recess 341 of the press rod 34 through the throat λ hole y of the pipe 33.

Then, as the piston that is applied to the hydraulic cylinder Z rises, the guide 432 rises, so that the pressure rod 34 integral with the guide 432 rises.
The direction rises toward the opening 35' of the induction body 35, and in the middle of this upward movement 52, the holding position of the stud R is successively corrected by sliding contact with the inner peripheral edge of the induction body 35.
is held in a tightly fitted state. On the other hand - the piston rod in the hydraulic cylinder C] 7 is lowered to position the workpiece, and E is the workpiece f.
1g is pressed and held at a predetermined position ζ on the work plate 4, and the anvil k is lowered by a predetermined distance S to lower the workpiece f.
Waiting and waiting for the riveting work to 9g. However, guide culm 32
Pressure due to rise of g2 J! 34 rise ↑-R is the derivative 3
When the guide 432 reaches the opening 35 of No. 5, the guide 35 itself is automatically pushed up and its opening 35' is widened, and when the guide 432 has risen by a predetermined distance S, the stud R is in place. A riveting operation is performed on the workpiece f1g while the workpiece f1g is held in the fixed position at position [(1, gl), and while this riveting operation is being performed, the vacuum pump C:
The suction and adhesion action to 1 is continued, and the predetermined position f+,
The stud R will be driven into the gl accurately. After the work is finished, the suction action stops, and both hydraulic cylinders C9Z return to the solid line positions in Figure 1, waiting for the next riveting work. Note that after the stud R is not driven into the workpiece f1g, the elastic force of the coil spring causes the induction body 35 integral with the outer cover to return to the solid line position in Figure @2.

3-6 Effects According to the present invention, since the workpiece is driven with the head of the rivet positioned downward, narrow gaps between the workpieces and narrow gaps between the workpieces can be avoided. Is the amount too large or the form? J! Because of miscellaneous.

With the neck in the upper position C: lower ↑ This eliminates the difficulties associated with conventional methods, which were extremely difficult or impossible to perform the rivet work.Moreover, suction action ↑ Since the head of the tack is suctioned, @ is always covered. By making it possible to properly and reliably drive the rivets into the desired position of the workpiece, it is possible for 1 worker C: to easily perform the rivet work, and there is no risk of the structure as a whole becoming unnecessarily complicated, so it is easy to use and is inexpensive. The above example uses an open type machine frame (as described above), but it is different from the conventional "C" type machine frame. It is also possible to drive the head of the rivet from below into the workpiece C using the machine frame.

[Brief explanation of drawings]

Figure 3 is the 1-1 line arrow view of Figure 2 - Math Figure 4 is the 2v
4 is an enlarged view of the IV-ff line arrow, and Figure 5 is the V-V of Figure 3.
An enlarged line sectional view, FIG. 14...Working board 34...Press rod R
......Tack f, g...Workpiece k...
...Anvil t...Tack head y...
... Pressure rod suction hole March 2, 1985 Inventor Tsukasa Kondo: ■ t-,,-J ■ Street'IV

Claims (2)

[Claims] (1) The head of the rivet is placed and held on the upper end of a pressure rod with a suction hole that can be raised and lowered relative to the work panel, while the head of the rivet is held on the upper surface of the work panel by an anvil that can be raised and lowered relative to the work panel. A rivet driving device characterized in that the head is driven into a workpiece from below under vacuum action. (2) The fastener driving device according to claim 1, characterized in that the pressing rod with the suction hole can be raised and lowered by a predetermined distance below the work plate, and the anvil can be raised and lowered by a predetermined distance above the work plate.