JPH0717263B2 - Head bar feeder - Google Patents

Description

Description: TECHNICAL FIELD The present invention automatically feeds headed rods such as welding bolts and drawn rivets in a line, separates these aligned headed rods one by one, The present invention relates to a headed rod supplying device that continuously supplies an automatic tightening tool or the like.

2. Description of the Related Art As a conventional technique, for example, as shown in Japanese Patent Publication No. 52-15862, head rods sent in line on a chute with their heads on top and falling by their own weight. Since it is separated by and sent under pressure as it is, it is supplied so that the head of the headed rod is at the back for the next step.

Hereinafter, an example of the above-described conventional headed rod supplying device will be described with reference to the drawings.

In FIG. 5, reference numeral 1 denotes a large number of headed rods 2 and a chute 3
It is a feeder for aligning with. Reference numeral 4 is a head retainer for preventing the aligned headed rods 2 from rising from the chute 3. Reference numeral 5 denotes a separating / feeding device that separates the aligned headed rods 2 one by one and sends them to a predetermined place by compressed air. 6 is a bar material 2 with a head separated by the separation feeding device 5.
It is a carrier pipe for sending to a predetermined place. Reference numeral 7 is an air pipe which is in constant communication with the compressed air source, 7a is an air pipe which is directly connected to the air pipe 7, and 8 is an air pipe which is connected to the air pipe 7 through a valve 9 for constantly connecting and disconnecting the compressed air.

Next, the operation will be described.

First, when the valve 9 is opened, the separating / feeding device 5 operates in one direction to separate one of the headed rods 2 on the chute 3 and to inject compressed air into the conveying pipe 6, and when the valve 9 is closed, it separates. The feeding device 5 operates in the opposite direction to drop the headed bar 2 that was previously separated into the carrier pipe 6. When the valve 9 is opened and closed again, one of the headed rods 2 on the chute 3 is separated and dropped into the conveying pipe in the same manner as described above, but this time, the headed rod 2 is dropped into the conveying pipe 6. When the compressed air was previously jetted to the carrier pipe 6, the headed rod 2 dropped into the carrier pipe 6 last time is transferred to a predetermined place. By repeating this operation, the headed rod 2 can be continuously fed to a predetermined place.

Next, the essential parts of the separating / feeding device 5 of FIG. 5 will be described in detail with reference to FIGS. 6, 7, 8, and 9.

In FIG. 6, reference numeral 10 denotes a main body of the separating / feeding device 5, which has a round hole 13 for fitting a plunger 12 shown in FIG. Is the ninth
As shown in the figure, there are air holes 14 and 15 at both ends, and air pipe joints 16 and 17 are screwed in to communicate air pipes 7a and 8. The right end of the plunger 12 fitted in the round hole 13 of the main body 10 faces the stopper 24 screwed into the cylinder head 23 fixed to the main body 10, and the plate 25 is fitted to the screw part 12a at the left end thereof and the nut is fitted. Fixed by 26,
As shown in FIGS. 6 and 8, a shutter 28 fitted so as to be slidable on a groove 27 of the main body 10 is firmly fixed to the upper right portion of the plate 25. The shutter 28 has a vertical hole 29 in a position aligned with the drop hole 11 of the main body 10 when the plunger 12 is at the right end. The vertical hole 29 is fitted to the groove 31 at the upper part of the main body 10 and the drop hole 11 and the chute 3 are formed. The lower end of the finger 30 for alternately isolating and communicating with and is firmly fixed. The finger 30 is formed with a claw portion 30a for receiving the headed rod 2 and an inclined groove portion 30b. Also the 8th
As shown in the figure, the plunger 12 is formed with a step between a large diameter portion 36 and a small diameter portion 36a with which the ball 35 elastically contacts. Next, as shown in FIGS. 7 and 8, a hose joint 18 is fitted to the lower end of the drop hole 11 of the main body 10 and fixed by a presser foot 19 and a bolt 20. One end of is fitted. Further, inside the hose joint 18, air holes 45 and 46 are provided for communicating the small diameter portion 22 having the slot 21 and the air hole 15 of the main body 10. Rod 3 in air hole 46
3 are fitted so that they can slide, a rod spring 32 that constantly urges the rod 33 toward the plate 25 is on the right end of the rod 33, and a rod position adjustment bolt 34 is on the left end.
It is attached to 25, and the inside of the hose joint 18 and the air hole 15 communicate with each other when the plunger 12 comes to the left end.

In FIG. 7 and FIG. 8, 37, 37a are springs, 38, 38a are the heads of the headed bar 2 disengaged from both sides at the inner end on the drop hole 11 and part of the inner end is inclined. A bar receiving plate engaged with the ball 35 is constantly urged toward the center of the drop hole 11 by springs 37 and 37a, and is slidably provided in a groove 39 provided in the main body 10.

40 is a connector that connects the main body 10 and the chute 3, and is a bolt
It is fixed by 41 and 42. 43 is a cover for preventing the rod receiving plates 38, 38a from floating, and is fixed by bolts 44.

Next, the operation of the separating / feeding device 5 will be described. FIG. 8 shows that the plunger 12 in the round hole 13 of the main body 10 moves to the right until the right end hits the stopper 24 by the air pressure constantly applied to the left end face through the right end air hole 14 connected to the air pipe 7a. The finger 30 moving together with the plunger 12 isolates the chute 3 from the drop hole 11 of the main body 10 and stops the row of the headed rods 2, as shown in FIG. One headed rod 2 has just dropped into the conveying pipe 6 through the drop hole 11 of the main body 10, the vertical hole 29 of the shutter 28 and the inside of the hose joint 18 which are lined up. Then, by opening the valve 9 shown in FIG. 5, the plunger 12 in the round hole 13 of the body 10 in FIG. 8 is compressed by the compressed air sent through the air hole 15 at the right end connected to the air pipe 8 It receives air pressure over the entire surface, and overcomes the air pressure constantly applied to the left end surface through the air hole 14 at the left end and moves to the left. Then, as the plunger 12 moves, the shutter 28 and fingers 30 also move to the left. When the plunger 12 moves in this way, the ball 35 elastically contacting the large diameter portion 36 of the plunger 12 moves out of the large diameter portion 36 and moves to the small diameter portion 36a. The 8th movement of this ball 35
As shown in the figure, the bar receiving plates 38 and 38a are both springs 37 and 3.
The groove 39 is slid inward by the elastic force of 7a, and its tip falls into a drop hole.
Make it protrude above 11. On the other hand, by the movement of the finger 30, the headed rod 2 that has been locked to the finger 30 claw portion 30a is guided into the groove 30b that is inclined only one, and the finger 30 moves to the left in FIG. As a result, the headed bar 2 moves downward, and finally disengages from the claw portion 30a and moves above the drop hole 11. On the drop hole 11, the headed bar 2 is locked at its neck by the protruding ends of the bar receiving plates 38, 38a. Then, when the plunger 12 comes to the leftmost side, the air hole 15 and the air holes 46, 45 shown in FIG. 9 communicate with each other, and the headed rod 2 sent before the headed rod 2 is The compressed air is sent to a predetermined place in the carrier pipe 6. Then, when the valve 9 is closed, the left air pipe 14
Since the compressed air is sent to only the plunger 12, the plunger 12 moves to the right, and the movement of the ball 35 causes the rod receiving plates 38 and 38a to move outward against the elastic force of the springs 37 and 37a. Since it slides, the headed rod 2 that has been locked to the ends of the rod receiving plates 38, 38a falls into the falling hole 11, and the plunger 12 moves to the left again to move to the next position. The cycle is started.

By repeating the above cycle, it is possible to continuously feed the headed bar material.

Problems to be Solved by the Invention However, in the above-mentioned structure, the chute is supported and fed with its head up, and the gap between the bar receiving plates passes through the hose joint to allow free fall to the conveying pipe. Since it is sent by compressed air passing through the main body, the headed bar is sent out behind the head. Therefore, when it is necessary to feed the head first, a device for reversing the bar is required, and there is a problem that the structure is complicated and the size is increased.

The present invention solves the above problems and provides a device for feeding a headed rod with the head first, in a compact and simple structure.

Means for Solving the Problems In order to solve the above problems, a headed rod feeding device of the present invention is a chute that feeds a headed rod in a head-neck hanging state, and is arranged at one end of the chute. A head feeding device for separating the headed rods sent from a chute one by one and delivering the headed head first, wherein the separation feeding device is A bar-piercing hole that communicates with one end of the chute and that allows the head-bars separated one by one to drop by gravity, and a carrier pipe that conveys the separated head-bars to a predetermined position. A main body having a bar material carrying-out hole having an opening formed on the lower surface connected to, a finger for separating headed bar materials arranged in a line in the chute one by one and feeding the head material into the bar material dropping hole; A bar receiving plate that temporarily releases the head of the separated bar with a head and then opens it. A plunger for operating the finger and the bar member receiving plate, and configured to be movable between a position directly below the bar material dropping hole and a position directly below the bar material unloading hole connected to the plunger, And a rod-receiving hole having an opening on its upper surface so as to form a conveying path integrally air-tightly connected to each of the rod-falling hole and the rod-unloading hole at each moving position and the rod-receiving hole. A slider having an air hole for ejecting compressed air on the bottom surface side of the slider, and a bar material receiving hole formed in the slider, when the bar material receiving hole of the main body is in a position communicating with the air hole. A compressed air source arranged to deliver compressed air.

Effect The present invention receives headed rods separated one by one according to the above-mentioned configuration with the slider, moves them to the carry-out hole, and sends them to the upper portion by compressed air, so that the headed rods are placed with the head first. Can be sent.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings. The same parts as those of the conventional example shown in FIG. 5, FIG. 6, FIG. 7, and FIG.

In FIG. 2, reference numeral 45 denotes a separating and feeding device that separates the aligned headed rods 2 one by one and sends the heads to a predetermined position first by compressed air. Reference numeral 47 is a conveying pipe for feeding the headed bar material 2 separated by the separating and feeding device 45 to a predetermined place. Reference numeral 7b is an air pipe connected to an air pipe 7 which is always in communication with a compressed air source, and is used to flow air for pressure-feeding the separated headed bar 2 upward. Reference numeral 46 is for moving the headed bar 2 separated and dropped by the slider operating in the separating / feeding device 45 to the pressure feeding position.

The operation will be described below.

First, when the valve 9 is opened, the separation feeding device 45 and the slider 46 move in one direction to separate one of the headed rods 2 on the chute 3 and drop it into the slider 46. When the valve 9 is closed, the separation feeding is performed. The device 45 and the slider 46 operate in the opposite direction to separate the head rod 2 in the slider 46, move the headed bar 2 dropped into the slider 46 to the position of the carrier pipe 47, and compress the compressed air passing through the air pipe 7b to the slider 46 and the carrier pipe. The bar material with a head inside the slider 46 is ejected into the slider 47 and is transferred to a predetermined place through the carrier pipe 47. By repeating this operation, the headed bar can be continuously fed to a predetermined place.

Next, the essential parts of the separating / feeding device 45 of FIG. 1 will be described in detail with reference to FIGS. 2, 3, and 4. Incidentally, FIG. 1 is a sectional view taken along the line AA in FIG.

In FIG. 3, reference numeral 48 is a main body of the separating / feeding device 45, and air pipes 8, 7a shown in FIG.
Plunger 12 is slidably fitted by the action of valve 9. The right end of the plunger 12 is opposed to the stopper 24 screwed into the cylinder head 50 fixed to the main body 10, and the left end of the screw portion 12a has a plate 51.
Are fitted together and fixed by the nut 26, and the groove 52 of the main body 48 is provided on the upper right side of the plate 51 as shown in FIGS. 1 and 4.
A slider 46 that is slidably fitted to is firmly fixed. The slider 46 is provided with a bar material receiving hole 53 at a position aligned with the drop hole 49 of the main body 45 when the plunger 12 is at the right end. The lower end of the finger 30 for alternately separating and communicating with the chute 3 is firmly fixed. Next, as shown in FIG. 4, the main body 48 is provided with a bar material discharge hole 55 at a position aligned with the bar material receiving hole 53 of the slider 46 at a position where the slider 46 is moved to the right end. The pipe contact 56 is fitted and fixed by the cover 57, and one end of the carrier pipe 47 is fitted to the upper end of the pipe joint 56. Further, an air hole 58 is provided at the lower end of the rod member receiving hole 53 of the slider 46, and an air hole 59 communicating with the air hole 58 is also provided in the main body 48 at the position where the slider 46 is moved to the right end. There is.

Next, the operation of the separation feeding device 45 will be described. FIG. 3 shows a state in which the plunger 12 slidably attached to the main body 48 is moved to the right by the air tube 7a until its right end hits the stopper 50, and the finger 30 that moves together with the plunger 12 acts as the chute 3. The head holes 2 are stopped by separating the head holes 2 from the drop holes 49 of the main body 48, as shown in FIG. One piece has just dropped into the rod receiving hole 53 of the slider 46. Then, by opening the valve 9 shown in FIG. 2, the plunger 12 in the main body 48 in FIG.
Is moved to the left by the compressed air sent through the air pipe 8. Then, as the plunger 12 moves, the slider 46
And Fig 30 also moves to the left. When the plunger 12 moves in this way, the ball that is in elastic contact with the plunger 12
By the action of 35, as shown in FIG. 4, the bar receiving plates 38, 38a slide inwardly in the groove 39 by the elastic force of the springs 37, 37a, and the tips thereof project above the drop holes 49. Meanwhile fingers 30
By the movement of, the headed rod 2 that has been locked to the claw portion 30a of the finger 30 is guided into the groove portion 30b that is inclined by one, and the finger 30 moves to the left in FIG. Therefore, the headed bar 2 moves downward, and finally disengages from the claw portion 30a and moves above the drop hole 49. On the falling hole 49, the headed rod 2 has the neck portion mentioned above at the rod receiving plate.
It is locked by the protruding ends of 38, 38a. When the plunger 12 comes to the leftmost side, the air hole 59 and the air hole 58 shown in FIG. 4 communicate with each other so that the headed rod 2 sent before the headed rod 2 is compressed air. By the bar material unloading hole 55,
It is sent to a predetermined place through the pipe joint 56 and the conveyance pipe 47. Then, when the valve 9 is closed, the compressed air is sent only to the air pipe 7a, the plunger 12 moves to the right in FIG. 3, and the bar receiving plates 38, 38a slide outward,
The headed rod 2 which has been locked to the ends of the rod receiving plates 38, 38a falls into the drop hole 49, and the plunger 12 moves to the left again to start the next cycle. .

By repeating the above cycle, the headed bar can be continuously separated and sent with the head first.

EFFECTS OF THE INVENTION As described above, according to the present invention, since the headed rod can be delivered from the head in a natural state without changing the direction, it is possible to provide a simple structure, a small size, and a stable separate supply at all times.

[Brief description of drawings]

FIG. 1 is a sectional view of a separation feeding device according to an embodiment of the present invention, FIG. 2 is an overall schematic view of a headed bar material feeding device according to an embodiment of the present invention, and FIG. 3 is a plan view of the separation feeding device. 4, FIG. 4 is a sectional view taken along the line AA when the plunger is moved to the left end in FIG. 3, FIG. 5 is an overall schematic view of a headed bar feeding device showing a conventional example, and FIG. 6 is the same separating and feeding device. A plan view of
7 is a sectional view taken along line BB in FIG. 6, FIG. 8 is a sectional view taken along line CC in FIG. 7, and FIG. 9 is a sectional view taken along line DD in FIG. 2 ... bar with head, 3 ... shoot, 12 ... plunger, 30 ... fingers, 30a ... claws, 30b ... grooves, 38,3
8a …… bar material receiving plate, 45 …… separating feeding device, 46 …… slider, 48 …… main body, 49 …… bar material dropping hole, 53 …… bar material receiving hole, 55 …… bar material unloading hole, 56 …… Pipe joint, 58 …… Air hole, 59 …… Air hole.

Claims (1)

[Claims] 1. A chute for feeding a headed rod in a state of hanging the head and a chute disposed at one end of the chute for separating the headed rods fed from the chute one by one, and A head-equipped bar material feeding device comprising a separation feeding device which is fed first, wherein the separation feeding device communicates with one end of the chute and is separated one by one. A main body having a penetrating hole for penetrating to drop the bar by itself, a bar carrying-out hole having an opening on the lower surface connected to a carrying pipe for carrying the separated headed bar to a predetermined position, and the chute Fingers for separating the headed bar members arranged in a row one by one and feeding them into the bar drop hole, and a bar member receiving plate for temporarily locking the separated headed bar members and then opening them. When,
A plunger for operating the fingers and the bar receiving plate; and a plunger connected to the plunger so as to be movable between a position immediately below the bar falling hole and a position immediately below the bar unloading hole, and Of the bar material receiving hole and the bar material receiving hole having an opening on the upper surface so as to form a conveying path integrally communicating with each of the bar material dropping hole and the bar material carrying-out hole in an airtight manner at each moving position. When a slider having an air hole for ejecting compressed air on the bottom surface side and a rod receiving hole formed on the slider are in a position communicating with the rod discharging hole of the main body, the slider is pressure fed to the air hole. A headed rod supplying device, comprising: a compressed air source arranged to send air.