JPH0698440B2 - Rivet feeder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rivet supply device, and more particularly to a rivet supply device in which a large number of rivets are aligned and delivered from one end thereof. The rivet supply apparatus of the present invention is particularly effective when used when it is necessary to pierce a large number of parts with a large number of rivets, such as a metal press product.

[0002]

2. Description of the Related Art Conventionally, as a rivet supplying device, a rivet receiving device mounted on a sliding member is provided with a sliding member that reciprocates at the front end of an alignment groove for aligning a large number of rivets and sequentially taking out and sending out from the front end side. The receiving groove of the member supports the neck of the rivet from the alignment groove, and after moving laterally,
There is used a device in which the rivet receiving member is moved so that the receiving groove is removed from under the neck of the rivet and is fed into the rivet feeding hole. For example, this is a multi-rivet piercing device described in Japanese Patent Publication No. 51-8235.

[0003]

SUMMARY OF THE INVENTION However, such an apparatus has the following problems as shown in FIGS. 6 and 7 of the above publication.
The rivet receiving member 20 movably attached to the sliding member 17 at a right angle to the reciprocating direction moves in the same direction together with the sliding member 17, and at that time, the cam roller 31 attached to the rivet receiving member 20 supports the supporting member. It is customary to ride on the inclined cam plate 18 attached to 16 so that the receiving groove 20 is separated from the front end of the alignment groove 8. By the way, the maximum distance between the rivet receiving member 20 and the front end of the alignment groove 8, that is, the cam lift amount h is h = stan θ, where s is the moving distance of the sliding member 17 and θ is the cam inclination angle as shown in FIG.
Since the cam inclination angle θ cannot be increased beyond a certain limit, the moving distance s of the sliding member 17 cannot be unnecessarily reduced. In the embodiment described in the above publication, the pitch between the alignment grooves 8 must be larger than the moving distance, so that the pitch must be increased. Then, an electromagnetic vibrator is normally used to align the rivets in the alignment groove 8, but since the usable range of the width direction of the rivet is limited, if the pitch is large, the number of alignment grooves is reduced, and the number of rivet piercings is reduced. There was a problem that it could not be used for many target products. The present invention has been made against the background of such circumstances.
An object of the present invention is to provide a rivet supply device that can reduce the pitch of the alignment grooves and increase the number of alignment grooves.

[0004]

The present invention, which has been made to achieve such an object, is configured as follows. A rivet aligning member having a predetermined number of rivet aligning grooves capable of supplying rivets from a rivet supplying hopper, and arranged near the front end of the rivet aligning groove and capable of reciprocating in a direction perpendicular to the rivet aligning groove. A first sliding member, and a rivet feed hole which is attached to the first sliding member in contact with the front end of the rivet aligning groove and is capable of reciprocating in a direction perpendicular to the rivet aligning groove and corresponding to the rivet aligning groove. The second sliding member is attached to the second sliding member such that the second sliding member can reciprocate in a direction perpendicular to the reciprocating direction of the second sliding member, and on the rivet feed hole from the front end of the rivet alignment groove. A rivet receiving member having a receiving groove formed to receive the neck portion of the rivet, and the rivet aligned in each alignment groove can be taken out laterally from the front end side and delivered from the rivet feed hole. In the feeding device, the range of the reciprocating movement of the second sliding member is between the front end of the rivet alignment groove and a position offset from the front end, and the receiving groove of the rivet receiving member is located at the retracted end thereof. It is located at the front end of the rivet alignment groove and can receive under the neck of the rivet. At the forward end, the second sliding member stops and the receiving groove is located out of the front end of the rivet alignment groove. With the cam device provided between the first sliding member and the rivet receiving member as the first sliding member advances,
A rivet feeding device in which the receiving groove is moved away from the front edge of the rivet aligning groove and is removed from under the neck of the rivet. The rivet supply device described in B A, wherein a suction tube is connected to each rivet feed hole provided in the second sliding member, and the rivet can be conveyed to a predetermined place by an air flow by suction.

[0005]

In the rivet supply device configured as described above, the first sliding member and the first sliding member provided so as to be movable relative to the second sliding member to which the rivet receiving member is attached, The cam device provided between the rivet receiving member and the rivet receiving member moves in the lateral direction (direction perpendicular to the rivet aligning groove) and in the direction in which the receiving groove of the rivet receiving member moves away from the front end of the rivet aligning groove. Work so that they can be done separately.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 3, reference numeral 10 denotes a rivet aligning member, which is formed by stacking a guide plate 18 having rivet guide grooves 16 at the same intervals on an align plate 14 having rivet align grooves 12 at a predetermined interval, and The front end is arranged so that it has a slightly downward slope. Rivet alignment member 1
An electromagnetic vibrator 19 is attached below 0 so that the rivet supplied from the rivet supply hopper 20 can be aligned in the alignment groove 12 by vibration. Guide plate 18
As shown in FIG. 3A, the guide groove 16 has a V-shaped cross section.
3B, the aligning plate 12 is formed with the aligning groove 12 that supports the underside of the rivet and aligns the shaft portion downward. Drop holes 22 are provided on both sides of the intermediate portion of the alignment groove 12 so that the rivet on the alignment groove 12 is not dropped into the alignment groove 12 and is dropped.

As shown in FIGS. 2 and 5, the mounting member 26 mounted on the front end member 24 disposed below the front end side of the alignment groove of the alignment plate 14 serves as a first sliding member via a slide bearing 28. Slide base 30 is aligned groove 12
It is reciprocally movable in a direction perpendicular to and is supported by a cantilever. Then, a slider 34 as a second sliding member is attached to the slide base 30 via a slide bearing 32, and can reciprocate in the same direction as the slide base 30 while being in contact with the front end of the alignment groove 12. . As shown in FIG. 6, the slider 34 has a U-shaped rivet feed hole 36 corresponding to the alignment groove 12, and a tube adapter 38 is projected below the U-shaped rivet feed hole 36. Also, the slide base 30
As shown in FIG. 7, the central part is hollowed out in the longitudinal direction so that the tube adapter 38 does not interfere with the reciprocating motion. In FIG. 6, reference numeral 40 denotes a mounting recess of the slide bearing 32, and 42 denotes a guide mounting groove of a slide bearing 44 described later.

Further, a shutter base 46 is attached to the slider 34 via a pair of slide bearings 44 so as to be capable of reciprocating in a direction perpendicular to the reciprocating direction of the slider 34. Further, the shutter base 46 has an alignment groove 1
The shutter 50 having the receiving groove 48 corresponding to No.
And a rivet receiving member. The receiving groove 48 is adapted to receive the neck portion of the rivet from the front end of the alignment groove 12. Further, a compression spring 56 is provided between the pair of spring seat plates 54 fixed to both projections of the slide 34 and the presser 52 so that the receiving groove of the shutter 50 contacts the front end of the alignment plate 14. It is energized. That is, the tip end portion of the rod-shaped member 58 planted in the shutter retainer 52 is freely fitted in and out of the hole provided in the spring seat plate 54, and the compression spring 56 is attached to the rod-shaped member 58, so that the shutter 50 side. The end portion is pressed against the front end of the alignment groove 12.

Further, a cam roller 60 is attached to the lower surface side of the shutter base 46, and the slide base 3 is provided.
An inclined cam plate 62 is provided on the side surface of 0, and when the slider base 30 moves relative to the slider 34,
The cam roller 60 is pushed down, the side end of the shutter 50 is separated from the front end of the alignment groove 12, and the receiving groove 48 supporting the rivet is formed.
Moves away from under the rivet. A pressing plate 64 guides the upper surface of the shutter 50 and has a U-shaped recess into which the head of the rivet can be fitted.
Supports the head of the rivet when it moves away from the rivet, and acts so that the rivet does not move in the movement direction of the shutter. Reference numeral 66 denotes a transparent holding plate, which can be moved in the vertical direction, although its movement in the horizontal direction is restricted. That is, the heads of the bolts attached to the aligning plate 14 are fitted into the holes provided in the holding plate 66, and the holding plate 66 itself cannot move in the horizontal direction but floats in the vertical direction to hold the rivet head and press the rivet. Alignment no drooling occurs.

As shown in FIGS. 1 and 4, the slide base 3
A compression spring 70 is mounted between the spring seat block 68 mounted on the slider 34 and the protrusion of the slider 34.
The other protruding portion of the slider abuts on the stopper 73 attached to the slide base 30 so that the slider 34 and the slide base 30 move together.

As shown in FIGS. 1 and 4, a single-acting fluid pressure cylinder device 74 is mounted on a mounting plate 72 disposed laterally of the rivet aligning member 10, and a solenoid of an electromagnetic switching valve (not shown) is mounted. Is excited, the piston rod protrudes to advance the slide base 30, and when demagnetized, the piston rod retracts. Cylinder device 7
A stopper 76 having a two-step contact surface is attached to the opposite side of the attachment position of No. 4. When the slide base 30 is moved forward by the cylinder device 74, the slider 34
When the end surface of the slider 34 hits the contact surface of the first step, the slider 34 stops, but the slide base 30 further moves forward while compressing the compression spring 70, and hits the second step. It stops when it hits the contact surface. When the piston rod of the cylinder device 74 is retracted, the slide base 30 is pushed back by the compression spring 78 provided between the stopper 76 and the slide base 30 and retracts, and comes into contact with the stopper 80 provided on the mounting plate 72 to stop. However, the slider 34 also retracts together. FIG. 1 shows a normal position in which the electromagnetic switching valve of the cylinder device 74 is demagnetized and the slider 34 and the slide base 30 are stopped at the backward end. In this normal position, the alignment groove 12 and the receiving groove 48 of the shutter 50 are aligned with each other, and the alignment groove 1
The rivets aligned with No. 2 enter the receiving groove 48, and the lower part of the rivet can be supported by the receiving groove 48. When the cylinder device 74 operates from this state and the slider 34 advances and stops by hitting the stopper 76, the receiving groove 48 moves to the left as shown in FIG. 8, and the rivets in the receiving groove 48 are aligned with the alignment groove 1
Will be separated from 2. Further, when the slide base 30 advances from this state, the inclined cam plate 62 attached to the slide base 30 rides on the cam roller 60 attached to the shutter base 46, and the shutter base 46.
By pushing down, the receiving groove 48 of the shutter 50 is also separated from the front end of the alignment groove 12 and left from under the neck of the rivet as shown in FIG. Therefore, the rivet is the rivet feed hole 3
6, it is carried to a predetermined place through a tube (not shown) connected to the tube adapter 38, and the rivet pricking work becomes possible.

In this way, one of the front ends of the rivets aligned in the alignment groove 12 is taken out and moved in the lateral direction, and the receiving groove 48 of the shutter 50 is separated from the front end of the alignment groove 12 and the rivet is riveted. Since the operation of dropping the rivet in the hole 36 can be performed separately, it is possible to arbitrarily set the lateral movement distance of the rivet. That is, the moving distance of the rivet is minimized by adjusting the contact surface of the first step of the stopper 76 so that the moving distance of the rivet in the lateral direction is slightly larger than the width of the alignment groove 12. be able to. By doing so, the pitch of each alignment groove 12 can be reduced, so that the number of alignment grooves per fixed width can be increased, and it can be applied even when the number of rivet stabs is large.

In the apparatus constructed as described above, the rivet supplied from the rivet supply hopper 20 drops on the guide plate 18 and is guided by the vibration of the electromagnetic vibrator 19 into the guide groove 16 while moving forward. Further, in the alignment groove 12, the rivets are sequentially aligned so that the head is on the top and the shaft is on the bottom, and the weight of the pressing plate 66 presses the rivets from above to prevent the alignment from being disturbed. The alignment groove 12
The rivets that did not enter the inside fall on the chute 23 from the drop hole 22 on the way and are collected at one end, where they are returned to the inside of the rivet supply hopper 10 by the air flow reflux device (not shown). With the rivet at the front end of the alignment groove 12 fitted in the receiving groove 48 of the shutter 50, the cylinder device 7
4 operates, the shutter 50 moves together with the slider 34 and stops at a predetermined position. Then, the shutter 50 separates from the front end of the alignment groove 12 and drops into the rivet feed hole 36, and the rivet passes through a tube (not shown) to a predetermined position. Transported to a place. When the cylinder device 74 stops operating, it returns to the initial state, and by repeating this, the rivet can be delivered. The above-described operation of the cylinder device 74 is performed by turning on / off a solenoid or a solenoid switch (not shown) or a timer or a limit switch (not shown). Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and it goes without saying that the present invention can be implemented in various modes without departing from the scope of the present invention.

[0014]

Since the present invention is configured as described above, it has the following effects. The operation of moving the rivets aligned in the alignment groove one by one from the front end of the row in the direction perpendicular to the alignment groove while supporting the neck under the receiving groove and dropping the rivet into the rivet feed hole below, is the rivet having the receiving groove. After the receiving member moves a predetermined distance in the direction perpendicular to the alignment groove together with the second sliding member that is attached to the first sliding member so as to be relatively movable, both members stop together, and then the first sliding member When the sliding member moves, the cam device provided between the first sliding member and the rivet receiving member moves the rivet receiving member in the direction away from the front end of the alignment groove, so that the receiving groove moves from under the neck of the rivet. Since the rivet is moved away from the front end of the aligning groove, the moving distance of the rivet in the direction perpendicular to the aligning groove can be set to an arbitrarily small value, so that each adjustment can be performed. The pitch between the row grooves is reduced, and as a result, it is possible to increase the number of alignment grooves in the operable constant-width alignment member of the electromagnetic vibrator, and it is also possible to apply the invention to a large number of rivet piercings. Further, since the rivet feed hole for feeding the rivet removed from the receiving groove is provided in the second sliding member and is always located below the receiving groove, there is an advantage that the rivet can be delivered reliably.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing an embodiment of the present invention.

FIG. 2 is a partial side view showing a part of the right side surface of the embodiment.

3A and 3B are views of A in FIG. 1, respectively.
FIG. 3 is a sectional view taken along line A-A and a sectional view taken along line BB.

FIG. 4 is a front view of the embodiment.

FIG. 5 is a partially enlarged cross-sectional view of the same embodiment.

FIG. 6 is a plan view including a partial cross section showing the component of the embodiment.

FIG. 7 is a perspective view showing another component of the embodiment.

FIG. 8 is an explanatory diagram showing an operating state of the embodiment.

FIG. 9 is an explanatory diagram showing another operation state of the embodiment.

FIG. 10 is an explanatory diagram of a cam used in a conventional example.

[Explanation of symbols]

 10 Rivet Aligning Member 12 Alignment Groove 20 Rivet Supply Hopper 30 Slide Base (First Sliding Member) 34 Slider (Second Sliding Member) 36 Riveting Hole

Claims (2)

[Claims] 1. A rivet aligning member having a predetermined number of rivet aligning grooves capable of supplying rivets from a rivet supplying hopper, and arranged near a front end of the rivet aligning grooves.
The first that can reciprocate in the direction perpendicular to the rivet alignment groove
And a second rivet hole which is attached to the first sliding member in contact with the front end of the rivet alignment groove so as to be able to reciprocate in a direction perpendicular to the rivet alignment groove, and which has a rivet feed hole corresponding to the rivet alignment groove. The sliding member and the second sliding member are attached to the second sliding member so as to be capable of reciprocating in a direction perpendicular to the reciprocating direction of the reciprocating member, and on the rivet feed hole, from the front end of the rivet alignment groove to the neck of the rivet. A rivet receiving member having a receiving groove formed to receive the rivet, wherein the rivet aligned in each alignment groove can be taken out laterally from the front end side and delivered from the rivet feed hole.
The range of the reciprocating motion of the sliding member is between the front end of the rivet alignment groove and a position offset from the front end, and the receiving groove of the rivet receiving member is located at the front end of the rivet alignment groove at its retracted end. The second sliding member stops at the forward end and the receiving groove is positioned out of the front end of the rivet alignment groove, and the first sliding member advances in that state. Thus, the rivet supply device is configured so that the cam groove provided between the first sliding member and the rivet receiving member moves the receiving groove in a direction away from the front end edge of the rivet aligning groove and removes it from under the neck of the rivet. 2. The rivet supply device according to claim 1, wherein a suction tube is connected to each rivet feed hole provided in the second sliding member, and the rivet can be conveyed to a predetermined place by an air flow by suction. Rivet feeder.