JPH0567540B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use The present invention is directed to a large number of stored screws, rivets,
The present invention relates to a device for removing misaligned components from a shoot rail in a component supply device that aligns and supplies components such as pins to predetermined positions.

Prior Art Generally, when supplying individual parts to an automatic screw tightening machine, automatic riveting machine, automatic pin press-fitting machine, etc., a large number of parts are stored in a hopper, and the parts are moved by a scooping plate that swings vertically. It is scooped up and transferred to the shoot rail, and then forced to move by gravity or by vibration of the shoot rail to the separation supply unit at the tip of the shoot rail. in this case,
Instead of the legs of all parts being at the bottom and the lower surface of the head moving along the shoot rail,
The heads may overlap each other and move on the shoot rail in a floating, tilted or overturned state. Therefore, a misaligned parts removal device is installed at the entrance of the shoot rail, which allows only aligned parts to pass through and has a removal plate with a cutout for removing misaligned parts.The advancement of this removal plate removes misaligned parts. The part is configured to be returned into the hopper.

The removal plate 24 of this misaligned parts removal device is the third
As shown in the figure, a slide shaft 22 arranged to reciprocate in a straight line along the shoot rail 19
This slide shaft 22
is locked to one end of a rotary lever 17 that is rotatably arranged. Further, a hit pin 30 is attached to the other end of the rotary lever 17, and this hit pin 30 engages with the guide roller 11 which rotates under rotation of a rotational drive source (not shown) to scoop the scoop. It is configured to engage with an arm 8 that rotates about one point together with the plate 6. Therefore, this rotating lever 17 is configured to rotate as the arm 8 and the scoop plate 6 rise, and return to rotation as the arm 8 and the scoop plate 6 descend, thereby reciprocating the removal plate 24.

Problems to be Solved by the Invention In the above-mentioned misaligned parts removal device of the parts supply device,
When the arm 8 and the scoop plate 6 are in the lowered position,
The exclusion plate 24 stops at a position slightly protruding into the hopper 4 from the end of the shoot rail 19. When the guide roller 11 rotates under the rotation of the rotational drive source and the arm 8 and scoop plate 6 rise,
The abutment pin 30 abuts against the upper surface of the arm 8, the rotation lever 17 rotates, and the removal plate 24 retreats from the end of the shoot rail 19 together with the slide shaft 22. Furthermore, when the guide roller 11 rotates and its rotational direction becomes the downward direction, the scoop plate 6 descends, and along with this, the contact pin 30 and the rotation lever 17 also rotate back, and the slide shaft 24 and the removal plate 2 advances towards the end of the shoot rail 19. At the same time, the exclusion plate 24
Return the misaligned screws 3 on 9 into the hopper 4.

At this time, since the advance of the exclusion plate 24 and the descent of the scoop plate 6 are started at the same time, the exclusion plate 24 has reached the end of the shoot rail 19 by the time the scoop plate 6 is completely separated from the end of the shoot rail 9. If there are a large number of misaligned screws 3 on the shoot rail 19, they may become caught between the exclusion plate 24 and the scoop plate 6, causing damage to the exclusion plate 24 or damage to the surface of the component. There are disadvantages such as damage to the

Means for Solving the Problems The present invention aims to eliminate the above-mentioned drawbacks.
A scooping plate is arranged to be movable back and forth within the hopper, thereby scooping up parts and supplying them to the shoot rail. An arm that rotates around a single point is integrally attached to the scoop plate, and a guide roller that rotates together with a crank that rotates in response to rotation of a rotational drive source is arranged so as to come into contact with this arm. ing.

On the other hand, a slide shaft is slidably disposed along the shoot rail, and an exclusion plate is attached to one end of the slide shaft. Further, the slide shaft is locked to one end of a rotary lever that is rotatably disposed below the slide shaft, and is configured to reciprocate in a straight line as the rotary lever rotates.

Further, the other end of the rotary lever extends on the travel path of the guide roller, and the guide roller abutting surface on the lower surface has a cam surface formed of an arcuate surface co-centered with the crank, and a cam surface formed earlier than the cam surface. A flat surface is formed that comes into contact with the guide roller. In addition, a locking pin is installed in the crank to which the guide roller is attached, which is located at the rear of the rotation of the crank and comes into contact with the cam surface of the rotating lever. The interlocking pin is configured to abut against the rotation lever.

Function In the above misaligned parts removal device, when the scoop plate is at the lowest position in the hopper, the removal plate is in a position slightly protruding from the end of the chute rail in the hopper, but the guide roller rotates and the arm When the scoop plate rises, the scoop plate scoops up the parts while the guide roller comes into contact with the rotating lever and the rotating lever begins to rotate. Therefore, the slide shaft and the removal plate are retracted from the end of the shoot rail by the swinging movement of the other end of the rotary lever, and the parts scooped up by the scoop plate can be supplied onto the shoot rail.

Further, when the guide roller reaches its highest position and its rotational direction becomes a downward direction, the arm and the scoop plate are lowered together, and the upper surface of the scoop plate is separated from the end of the shoot rail. At this time,
Since the locking pin located at the rear of the rotation of the guide roller engages with the cam surface of the rotating lever, the rotating lever continues to stop at that position, and the slide shaft and exclusion plate are moved to the retreated position. is maintained.

When the guide roller further rotates and the arm and scoop plate are lowered and the scoop plate is completely separated from the end of the shoot rail, the locking pin separates from the cam surface of the pivot lever and the pivot lever is attached by the spring. It is forced back into rotation. Therefore, the slide shaft and the removal plate move forward toward the end of the shoot rail, and the misaligned parts on the shoot rail can be removed. Moreover, at this time, the scoop plate is completely separated from the end of the shoot rail, so even if there are many misaligned parts on the shoot rail,
These can be reliably swept away into the hopper.

Embodiments Hereinafter, embodiments will be described with reference to the drawings. In FIG. 1, A is a parts supply device, which has a frame 2 fixed to a base plate 1. A hopper 4 for storing a screw 3, which is an example of a component, is fixed to the frame 2 via a mounting plate 5. A fan-shaped scoop plate 6 is guided in the hopper 4 in a reciprocating manner, and the inner peripheral surface of the scoop plate 6 slides along the arcuate surface 5a formed on the mounting plate 5. The outer peripheral surface is configured to slide along a sliding surface 7a of a partition plate 7 fixed to the hopper. Further, a groove is formed in the upper part of the scoop plate 6, and the groove is configured to scoop up a large number of screws 3 stored in the hopper 4.

An arm 8 is fixed to the lower end of the scoop plate 6, and one end of the arm 8 is rotatably attached to the frame 2 about a support shaft 9. In addition, a guide groove 8a is cut in the center of the arm 8, and the guide groove 8a is made up of a circular arc portion co-centered with the crank 10 (described later) and a straight portion extending at both ends thereof. The arm 8 is configured to swing back and forth due to the circular motion of the sliding motion.

Further, a rotational drive source (not shown) is attached to the frame 2 via a mounting plate 5, and its rotation is rotatably held above the frame 2 via a transmission mechanism consisting of a belt 13 and a pulley 14. It is transmitted to the main shaft 15. A crank 10 is attached to the main shaft 15 so as to rotate together with the main shaft 15.
A guide roller 11 is attached at a predetermined distance from. The guide roller 11 is located within the guide groove 8a of the arm 8, and is configured to slide within the guide groove 8a as it rotates about the main shaft 15. The crank 10 also has a locking pin 1 located at the rear of the rotation thereof.
6 is implanted, and this locking pin 16 is located on the moving path of the guide roller 11, and the guide roller 11 is connected to the cam surface 1 of the rotating lever 17, which will be described later.
The rotating lever 17 is configured so that it comes into contact with the cam surface 17a at the same time as it leaves the guide roller 7a, and the posture of the rotating lever 17 is maintained for a while even after the guide roller 11 leaves the guide roller 11.

Furthermore, a linear vibration unit B is attached to the frame 2, and this linear vibration unit B
A shoot rail mounting base 18 is attached to the. A shoot rail 19 having a groove with a width corresponding to the leg diameter of the screw 3 is fixed almost horizontally to the shoot rail mounting base 18, and an automatic screw tightening machine ( A separate supply unit C is arranged for supplying the water (not shown). Further, one end of the shoot rail 19 is configured to protrude into the hopper 4, so that the screw 3 scooped up by the scoop plate 6 flows down and is transferred to the shoot rail 19.

A guide block 21 forming a part of the misaligned parts removing device is fixed to the frame 2 via a mounting block 20.
1 is guided by a slide shaft 22 that is movable parallel to the shoot rail 19. A removal plate mounting block 23 is fixed to one end of this slide shaft 22, and by elastically biasing this removal plate mounting block 23, the slide shaft 22 integrated therewith is urged in a direction to protrude toward the hopper 4 side. It is configured to A removal plate 24 having a notch of a size corresponding to the head of the screw 3 is rotatably attached to the removal plate mounting block 23, and is configured to remove misaligned screws 3. ing. Further, a stop ring 25 is fixed to the other end of the slide shaft 22.
5 comes into contact with the guide block 21, and the tip of the exclusion plate 24 is regulated so as to reach the end of the shoot rail 19. Moreover, the guide block 21
A slit 21a extending in the direction of movement of the slide shaft 22 is cut in the slit 21.
Inside a is a pin 2 fixed to the slide shaft 22.
6 is arranged so as to protrude and move.

On the other hand, the slide shaft 22 is attached to the frame 2.
A rotary lever 17 is rotatably mounted below the rotary lever 17, and the pin 26 is configured to engage with one end of the rotary lever 17.
Further, the other end of the rotary lever 17 is formed to extend to a position on the moving path of the guide roller 11, and a cam surface 17a and a flat surface 17b are provided at the position where the guide roller 11 contacts the lower surface. It is formed. The flat surface 17b is the guide roller 11
The rotary lever 17 is configured to rotate during the upward rotation of the crank 10, while the cam surface 17a is formed of an arcuate surface that is co-centered with the crank 10. The rotating lever 17 is configured to stop rotating.

In the above-mentioned component supply device, the crank 10 rotates in response to the rotation of the rotational drive source, and the guide roller 11 moves along the guide groove 8a of the arm 8 accordingly. Therefore, the scooping plate 6 rises within the hopper 4, thereby scooping up the screw 3. At the same time, the guide roller 11 moves the rotation lever 17
The rotating lever 17 comes into contact with the flat surface 17a of the main surface of the
rotates and the slide shaft 22 and exclusion plate 24 retreat from the end of the shoot rail 19, so the screws 3 scooped up by the scoop plate 6 flow down onto the shoot rail 19 and are aligned in a line on the shoot rail 19. Supplied. The crank 10 further rotates, and the guide roller 1 moves into the guide groove 8.
When reaching the arc portion a, the arm 8 and the scoop plate 6 stop at that position, and the screw 3 scooped up by the scoop plate 6 is reliably transferred to the shoot rail 19. When the guide roller 11 further rotates and its rotation direction becomes the downward direction, the arm 8 moves along the guide groove 8a of the guide roller 11.
It is pushed down and lowered. At the same time, the guide roller 11 separates from the cam surface 17a of the rotating lever 17, but as shown in FIG.
Since the locking pin 16 located at the rear of rotation continues to engage with the cam surface 17a of the rotating lever 17, the rotating lever 17 stops at that position. Therefore, the scoop plate 6 can be lowered and then stopped at that position for a while, and the upper surface of the scoop plate 6 is completely separated from the end of the shoot rail 19. After that, the locking pin 16 is moved to the rotating lever 17.
When the cam surface 17a is separated from the cam surface 17a, the rotary lever 17 returns to rotation, advances the slide shaft 22 and the exclusion plate 24 toward the end of the shoot rail 19, and hops out the misaligned screws 3 on the shoot rail 19. It can be dropped within 4. Moreover, at this time, the scoop plate 6 has completely separated from the end of the shoot rail 19, so the shoot rail 19
Even if there are a large number of misaligned screws 3 on the top, they can be reliably dropped into the hopper 4.

Effects of the Invention As explained above, the present invention positions one end of the rotary lever that acts to reciprocate the removal plate along the shoot rail on the movement path of the guide roller and the locking pin located behind the rotation of the guide roller. The rotation lever is rotated as the arm and the rake plate rise, and a locking pin is provided at the rear of the rotation of the guide roller, so that the locking pin does not rotate for a while after the guide roller is separated from the rotation lever. Since the rotating lever is configured to come into contact with the moving lever, the rotating lever rotates as the rake plate rises, causing the removal plate to retreat from the end of the shoot rail and supplying the parts onto the shoot rail in a line. After the rake plate is lowered, the rotary lever can be stopped in the retracted position for a while, and only when the rake plate is completely separated from the end of the chute rail, the rotary lever returns to rotation to advance the removal plate and eliminate misalignment. parts can be dropped into the hopper, the parts will not be caught between the removal plate and the scoop plate, the scoop plate will not be damaged, and the surface of the parts will not be damaged. There are advantages.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the main parts of the present invention with the cover removed, FIG. 2 is an explanatory diagram of the main parts of the present invention,
FIG. 3 is an explanatory diagram of the main part operation of the conventional example. A... Parts supply device, B... Straight vibration unit, C... Separation supply unit, 1... Base plate, 2... Frame, 3... Screw, 4... Hopper, 5... Mounting plate, 5a... Arc-shaped surface, 6...
...Rake plate, 7...Partition plate, 7a...Sliding surface, 8
...Arm, 8a...Guide groove, 9...Spindle, 1
0...Crank, 11...Guide roller, 13...
...Belt, 14...Pulley, 15...Main shaft, 16
... Locking pin, 17 ... Rotating lever, 17a ...
Cam surface, 17b... Flat surface, 18... Shoot rail mounting base, 19... Shoot rail, 20...
Mounting block, 21...Guide block, 21a
...slit, 22 ... slide shaft, 23 ... exclusion plate mounting block, 24 ... exclusion plate, 25 ... stop ring, 26 ... pin, 30 ... hit pin.

Claims (1)

[Claims] 1. It has a chute rail 19 for supplying parts and a scooping plate 6 that reciprocates within the hopper 4 to scoop up the parts, and an arm 8 that rotates around one point is integrally attached to this scooping plate 6. A guide roller 11 that rotates together with a crank 10 fixed to a main shaft 15 that rotates in response to rotation of a rotational drive source is arranged at a position where it comes into contact with this arm 8.
A rotary lever 17 having one end in the movement path is disposed on the guide roller 11, and the rotary lever 17 allows the arm 8 to reciprocate by moving the arm 8. The shaft 22 is configured to be able to freely reciprocate in a straight line along the shoot rail 19, and the removal plate 2 removes misaligned parts on the shoot rail 19.
In the misaligned parts removal device in the parts supply device configured to remove misaligned parts by 4, the contact surface of the guide roller 11 on the lower surface of the rotary lever 17 is connected to a cam surface formed of an arcuate surface having the same center as the crank 10 and this cam surface. guide roller 11 before
and a flat surface 17b in contact with the crank 1, to which the guide roller 11 is attached.
A device for removing misaligned components in a component supply device, characterized in that a locking pin 16 is installed at the rear of the rotating lever 16 to abut against a cam surface of a rotary lever 17.