JPH0331539B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Use) The present invention relates to an automatic continuous riveter and is used in the industrial field of manufacturing and selling riveters and other tools.

(Prior Art) In order to efficiently perform riveting work, there is a device that automatically supplies rivets to the nosepiece of a riveter, such as the Utility Model No. 55-12992.
As shown in the figure, there is a machine base equipped with a rivet supply base pipe at the rear and an operating switch mechanism for supplying compressed air into the base pipe, and a machine base installed on this machine base so as to be able to slide back and forth. , and a sliding member integrally equipped with a push-in hole for the tip of the riveter at its front end, and a pivotably mounted opening/closable member on the sliding member slightly behind the push-in hole, which normally resists the internal spring. When the tip is opened by the guide member and the tip is closed by the internal spring as the sliding member retreats, a protruding hole for the rivet shaft is formed at the tip to match the position of the nosepiece hole of the riveter. A rivet supply device main body consisting of two pivoting members configured as shown in FIG. A rivet automatic rivet comprising a spring member and a rivet supply guide tube whose tip end is inserted into the rivet supply device main body and whose base end faces the rivet supply base pipe and communicates with the base pipe. Feeding devices are known.

(Problems to be Solved by the Invention) However, the above device is limited to the function of automatically supplying the rivet to the nosepiece.
After loading the rivet, it is semi-automatic, requiring the worker to operate the riveter and drive the required number of rivets as before, which improves work efficiency and reduces the number of workers. I regret that this is not enough.

The present invention was developed and completed in order to solve the above problems, and includes everything from feeding the rivet, loading the nosepiece, moving the riveter to the location where the riveting is required, driving the rivet, and discharging the rivet cutting shaft. An object of the present invention is to provide a riveter that can automatically and continuously perform a series of riveting operations.

(Means for Solving the Problems) In order to achieve the above object, the automatic continuous riveter according to the present invention includes a riveter main body and a riveter main body that is rotated at a required angle in a direction intersecting the axial direction of the riveter main body. It consists of an actuator that moves the riveter, and a rivet supply mechanism that loads the rivet into the nosepiece of the riveter body.
The riveter main body is equipped with a fluid supply and discharge member that presses fluid into the cylinder to move the piston forward and backward to perform the required riveting, and is also equipped with a suction and discharge part for the rivet cutting shaft at the rear, and the actuator is installed with its rotating shaft attached to the main frame of the riveter main body, and the rivet supply mechanism has a rivet supply mechanism that is connected to a rivet supply chute pipe and is arranged on a plate so as to be able to slide back and forth from side to side. A pair of left and right fingers each having a supply passage, and a pair of fingers that slide back and forth in the left and right directions to widen and narrow the rivet supply passage, and to widen and narrow the pore for protruding the rivet shaft provided at the front end of the passage. It consists of an openable and closable rivet supply member consisting of a guide plate disposed on the finger so as to be slidable back and forth, and a cylinder equipped with a piston for sliding the guide plate back and forth,
The nose piece of the rivet main body is configured such that the nose piece of the rivet main body can normally be provided at the front end of the supply member of the rivet supply mechanism via a stopper for positioning rivet loading provided near the front end, and
The rivet is configured to be able to be loaded into the nosepiece through the supply path formed by the rivet supply member, and the rivet is air-fed from the shute pipe.
The present invention is characterized in that the riveter main body is rotated at a predetermined angle by the rotational operation of the rotary shaft of the actuator, so that riveting is performed automatically and continuously.

(Function) Since the automatic continuous riveter according to the present invention is configured as described above, the rivets from the rivet supply source are fed by air to the rivet supply mechanism via the shute pipe, and are supplied by the supply member of the supply mechanism. Via the feed channel formed, it is guided and fed to the front side of the nosepiece of the riveter, which has been placed beforehand. Next, the rivet is loaded into the nosepiece, but after a few seconds, the actuator rotates,
Therefore, the riveter is rotated to the required position.
When the riveter is moved to the location where riveting is required according to a predetermined program, the piston inside the cylinder reciprocates due to the fluid pressure flowing in and out from the supply/discharge member to drive the rivet and remove the cut rivet. The shaft is sucked and discharged to the rear of the riveter, and then the riveter body returns to its original position due to the double rotation of the actuator, thus completing one cycle of riveting.

The above-mentioned series of operations are automatically and continuously performed by using, for example, a detection mechanism such as a micro switch, a time switch, a transmission switch mechanism, and a sensor mechanism.

(Embodiments) Below, embodiments of the present invention will be described based on the accompanying drawings. The automatic continuous riveter according to the present invention can be roughly divided into a riveter main body A, and a riveter main body A set at a required angle. It consists of an actuator B that rotates in a direction intersecting the axial direction, and a rivet supply mechanism C that supplies the rivet from its supply source to a predetermined position.

In this embodiment, the riveter main body A is constructed in the same manner as a known hydraulic riveter, with an oil cylinder 1 and an oil piston 2 provided on the rear side of the main frame 3. An oil supply/discharge member 6 having a first oil supply/discharge port 4 and a second oil supply/discharge port 5 is attached to the first side. The first oil supply/discharge port 4 communicates with the inside of the cylinder 1 on the front side of the piston 2 via a first passage 7, and the second oil supply/discharge port 5 communicates with the piston via a second passage 8. It communicates with the inside of the cylinder 1 at the rear side of the cylinder 2. Further, the piston shaft 9 of the piston 2 is formed hollow, and a discharge guide pipe 1 of the rivet cutting shaft is installed in the front half of the piston shaft 9.
0 is inserted, and on the rear end side there are a suction air speed increasing nozzle 11 whose pipe diameter is gradually reduced, and a discharge pipe 12.
is fitted through a cap 13, and a discharge hose 14 is connected to the discharge pipe 12. In the head frame 15 attached to the front side of the main frame 3, there is provided a jacket case 16 whose base end is attached to the tip of the piston shaft 9. Inside the jacket case 16, a jacket is arranged in a known manner. 17, a journal 18, and a journal pressing spring 19 are housed, respectively, and a nose piece 20 is screwed onto the tip of the head frame 15.

Further, the actuator B has its rotating shaft 2.
1 is fixedly attached to the other side of the main frame 3 of the riveter main body A, and as shown in FIGS. 4 and 5, for example, a vane 22 is installed inside to rotate at the same time as the rotating shaft 21. Air chamber 23 on the circumferential side of
At the same time, air supply and discharge ports 24 and 25 are provided on both sides of the vane 22, and two air supply pipes 26 shown schematically in FIG. 2 are connected to the air supply and discharge ports 24 and 25 as appropriate. In the figure, 27 indicates a cover.

Further, the rivet supply mechanism C
A pin 30, 3 is installed approximately in the center of a pair of left and right fingers 29, 29 arranged on the top of the left and right fingers so as to be able to slide back and forth from side to side.
A rivet supplying member 31 consisting of a rivet supplying member 31 with 0 symmetrically arranged upright, and a pair of left and right elongated holes arranged on the upper surface of the supplying member and opening in a V-shape and expanding and tilting toward the rivet supply side. A guide plate 33 that is reciprocally slidable back and forth and has guide holes 32, 32 consisting of
, a touch plate 34 erected at the center of the guide plate 33 , and a rivet whose tip portion is arranged on the upper surface of the rear portion of the plate 28 so that the tip portion faces the rear intermediate portion of both fingers 29 , 29 . A feeding chute pipe 35 and the shute pipe 3
Finger 29 placed above the tip of 5,
It is composed of 29 air cylinders 36 for opening and closing.

The pins 30, 30 standing on the fingers 29, 29 are inserted into the guide holes 32, 32 of the guide plate 33, respectively, and when the guide plate 33 is advanced, the guide holes 32, 32 and the pin 30 are inserted into the guide holes 32, 32, respectively. , 30 through both fingers 29, 29
By bringing the rivet supply path 37 close and closing its tip, a pore for protruding the rivet shaft, which will be described later, is formed, and when the guide plate 33 is retreated, the guide holes 32, 32 and pins 30, 30 are closed. The fingers 29, 29 are separated through the rivet, and the rivet supply path 37 is expanded to open its tip, and the above-mentioned shoot pipe 35 is communicated with the supply path 37.

The air cylinder 36 also has two air supply/discharge ports 38 and 39, and an air piston 4 whose protruding tip is fixed to the rear part of the touch plate 34.
0, and when air is supplied from one air supply/discharge port 38 and the air piston 40 is advanced, the guide plate 33 is advanced to close the tips of both fingers 29, 29 as described above, and Air is supplied from the other air supply/discharge port 39 through the flow path 41, and when the air piston 40 is retracted, the guide plate 33 is retracted and the tips of the fingers 29, 29 are opened as described above. (See Figures 6 and 7).

In the figure, L ₁ , L ₂ , L ₃ , and L ₄ detect the position of each member placed at the required fixed location in order to automatically and continuously perform riveting, respectively.
In addition, a detection switch (limit switch, micro switch) 42 is used to issue a detection signal and automatically move each member to a required location or perform a necessary action automatically according to a preset program. When both fingers 29, 29 are closed, the protruding holes 43 of the rivet shaft formed at the tips thereof are provided at the four corners of the guide plate 33 in order to smoothly and reliably slide the guide plate 33 back and forth. Rollers 44 are guide rails for rolling the rollers 43 provided on both upper surfaces of the plate 28 on both sides of the guide plate 33; 45 is a stopper for positioning the rivet loading onto the nose piece 20 of the riveter main body A when loading the rivet; Reference numerals 46 and 47 indicate air supply and discharge ports of the air supply pipe 26 provided in the back plate 48, respectively.

Next, the one-cycle riveting operation of the present invention will be explained according to the above embodiment.

First, as shown in FIGS. 1 and 2, the head frame 15 of the riveter main body A detects the detection switch L ₁ arranged above the positioning stopper 45 provided on the front surface of the fingers 29, 29 of the rivet supply mechanism C. By touching the switch and activating the switch, it is detected that the nose piece 20 is in a position where the rivet R can be sucked, and a detection signal is generated.

In response to the detection signal, the rivet R is fed from a rivet supply source (not shown) through the shute pipe 35 into the rivet feeding path 37 formed when both fingers 19, 19 are in a closed state, The shaft part of the rivet is made to protrude from the small hole 42 formed at the front end of the nose piece 2.
Loaded to 0. At this time, air is flowing rearward inside the riveter main body A due to the suction action from the vacuum device, so the rivet continues to be attracted to the nosepiece 20.

After a few seconds, air is supplied to one air supply/discharge port 39 of the air cylinder 36.
The air piston 40 retreats and the guide plate 3
3 and therefore both fingers 29,2
9 is opened, the upper end of the touch plate 34 contacts the detection switch _L2 and activates the switch, thereby detecting that both fingers 29, 29 are opened and generating a detection signal.

In this way, the rivet R is completely attached to the nose piece 20.
The detection switch is activated a few seconds later.
Air is supplied from one air supply/discharge port 46 provided in the back plate 48 in response to a signal from _L2 , and the air is supplied from the air supply/discharge port 24 into the actuator B via one air supply pipe 26. Then, as shown in Fig. 4, the vane 22 is rotated to the right to rotate the rotating shaft 21 of the actuator B in the direction of the arrow, and the air riveter body A is rotated 90 degrees to the position of the stopper 49 provided directly below. When the oil cylinder 1 contacts the detection switch _L3 and operates the switch, it is detected that the nose piece 20 of the air riveter body A has been positioned, and a detection signal is output.
Therefore, the riveter main body A issues a detection signal indicating that it is positioned downward and ready for riveting.

In response to this signal, air is fed into the cylinder from the air supply/discharge port 38 of the air cylinder 36, and the air piston 40 is advanced to advance the guide plate 33. Therefore, both fingers 2
9 and 29 are closed, and at the same time, the touch plate 34 contacts the detection switch _L4 to actuate the switch, thereby detecting that both fingers 29 and 29 are closed and emitting a detection signal.

In response to this signal, the entire riveter unit according to the present invention is moved to the required riveting part (caulking part) by appropriate means such as a robot device (not shown), and the first oil supply of the oil cylinder 1 is moved. Oil is forced into the front side of the piston in the cylinder through the exhaust port 4, the oil piston 2 is moved back, and the jaw 17 is pulled to drive the required riveting.

After a few seconds, oil is forced into the rear side of the piston inside the cylinder from the second oil supply/discharge port 5 of the oil cylinder 1, and the oil piston 2 is moved forward and returned to its original position. Due to this return movement of the piston 2, the jaw 17 comes into contact with the nose piece 20, expands the jaw 17, releases the cutting shaft (mandrel) of the rivet R, and moves the cutting shaft backward by the suction action from the vacuum device. The liquid is discharged to a predetermined position via a discharge guide pipe 10, a discharge pipe 12, and a shoot hose 14 provided in the hollow part of the piston.

After a few more seconds, the back plate 48
Air is supplied from the other air supply/discharge port 47 of the actuator B, and air is supplied from the air supply/discharge port 25 into the actuator B via another air supply pipe 26 (not shown), as shown in FIG. like vane 22
to the left to rotate the rotary shaft 21 of the actuator B in the direction of the arrow, so that the head frame 15 of the air riveter main body A comes into contact with the positioning stopper 45, and the position shown by the solid line in FIG. This device returns the riveting device to the position shown in Figure 3, prepares the next rivet suction body, and completes the one-cycle riveting operation.By repeating this operation, the intended continuous riveting work is fully automatically performed. It is.

A detailed explanation of the series of operations described above will be omitted, but they are performed reliably by various known detection mechanisms (detection switches, detection sensors) according to preset programs. It is not limited to the examples.

(Effects of the Invention) As detailed above, according to the present invention, it is possible to supply rivets to the rivet supply mechanism, load the rivet into the nose piece of the riveter body, and rotate the riveter body by rotating the actuator. , for riveting by pressurizing fluid into the cylinder, discharging the rivet cutting shaft, and returning the riveter body to its original position (rivet loading position) by double rotation of the actuator. Since a series of one-cycle operations can be performed fully automatically using detection mechanisms such as detection switches and detection sensors, for example, the riveter unit can be operated using a robot or the like according to a preset program. By operating the entire unit, it has the great advantage of being able to perform the required riveting operations fully automatically and continuously without any personnel present, which not only saves labor costs but also allows safe operation even under dangerous and harsh working conditions. This has the effect of significantly improving work efficiency.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway plan view taken across the first part, FIG. 2 is a partially cutaway front view taken longitudinally through the first part, and FIG. 3 is a right side view. Figures 4 and 5 are illustrations of the operation of the actuator, Figures 6 and 7 are illustrations of the operation of the rivet supply mechanism, and Figure 8 is a front end view of the rivet supply mechanism with both fingers closed. , FIG. 9 is a front end view with both fingers opened. (Explanation of symbols), A... riveter body, B...
...Actuator, C...Rivet supply mechanism, 1
... Cylinder, 2 ... Piston, 3 ... Main frame, 6 ... Fluid supply and discharge member, 12 ... Discharge pipe, 20 ... Nose piece, 21 ... Rotating shaft of actuator, 28 ... Plate, 29 ... Finger, 31 ... Rivet supply member, 33 ... Guide plate, 35 ... Shout pipe, 36 ...
...Cylinder, 37...Rivet supply path, 40...
...Piston, 42...Shaft protrusion pore, 4
5... Stopper for positioning rivet loading.

Claims (1)

[Scope of Claims] 1. A riveter body, an actuator that rotates the riveter body at a predetermined angle in a direction intersecting its axial direction, and a rivet supply mechanism that loads a rivet into the nosepiece of the riveter body. The riveter main body is equipped with a fluid supply/discharge member that presses fluid into the cylinder to move the piston back and forth to perform the required riveting, and is equipped with a suction/discharge part for the rivet cutting shaft at the rear. The actuator is installed with its rotating shaft attached to the main frame of the riveter body, and the rivet supply mechanism is configured to slide back and forth from side to side on a plate that communicates with the rivet supply chute pipe. A pair of left and right fingers each having a rivet supply passage arranged in a manner that allows the rivet to be supplied, and a rivet shaft protrusion hole provided at the front end of the pair of fingers to widen and narrow the rivet supply passage by sliding the pair of fingers back and forth in the left and right directions. The rivet supply member is made up of an openable and closable rivet supply member consisting of a guide plate that is slidable back and forth on the finger to widen and narrow the rivet, and a cylinder equipped with a piston that slides the guide plate back and forth. The rivet is supplied to the front end of the supply member of the rivet supply mechanism through a stopper for positioning the rivet loading provided near the front end.
The nose piece of the riveter main body is configured to be able to be installed in the normal state, and the rivet supplied with air from the shute pipe is configured to be loaded into the nose piece through the supply path formed by the rivet supply member. An automatic continuous riveter characterized in that the riveter body is configured to be rotatable at a required angle by the rotation of the rotary shaft of the eater, so that riveting is automatically and continuously performed. 2 Feeding the rivet to the rivet supply mechanism, loading the rivet into the nosepiece of the riveter body, rotating the riveter body by rotating the rotating shaft of the actuator, and driving the rivet by pressurizing fluid into the cylinder. 2. The automatic continuous riveter according to claim 1, wherein the automatic continuous driving riveter is configured to automatically and continuously perform the steps of 1.