JPH09124132A - Transfer device and transferring method for headed shaft-like part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably make a normal hanging state, so as to improve efficiency in high-speed pneumatic conveyance, by connecting a parts feeder to a supplying pipe by a delivering hose, injecting conveying air into the delivering hose, and providing an interrupting mechanism to the supplying pipe. SOLUTION: A bolt 13 is vigorously conveyed in a delivering hose 10 from a parts feeder 6 by pneumatic conveyance and forcibly once stopped by a stopper piece 28. When the stopper piece 28 is drawn down by an air cylinder 30, the bolt 13 passes a passing hole 29 at low speed and is so transferred as to be smoothly slipped on the upper surface of a guide rail 16, a shaft part is inserted in a space part between the rail members 19 by its own weight and made into the hanging state. Since there is a possibility that the bolt 13 is laterally flicked for some reason, it is regulated by guide plates 23, 23. In the bolt 13 having the high gravity point, air is blown from nozzles 45, 46, the hanging state is stabilized, and conveyance is promoted by operating a vibrator 38.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in the technical field in which a shaft-shaped component with a head is transferred to a guide rail in a hanging state. A typical example of the component is a bolt with a head. can give.

[0002]

2. Description of the Related Art A shaft portion of a shaft-like component with a head is inserted between guide rails composed of a pair of rail members arranged in parallel, and the head portion of this component is slid on the upper surface of the guide rail to suspend the head. In the case of the transfer type, there is a problem that the above-described sliding cannot be normally performed unless the shaft-shaped component is properly suspended from the guide rail. One end of such a guide rail is connected to, for example, a component distribution mechanism, and the other end is connected to a parts feeder via a conveying means. If the parts are not suspended from the carrying means when they are transferred to the guide rails, normal transfer by the guide rails cannot be performed. Therefore,
A transporting means as shown in FIG. 13 is adopted. That is, two wire rods 1 and 2 are arranged in parallel, the shaft portion 4 of the bolt 3 is inserted between them, and the head 5 is placed on the upper side of the wire rods 1 and 2 to suspend the head. The conveying means by the wire rods 1 and 2 is installed from the parts feeder toward the guide rail. This conveying means is inclined so that it becomes lower as it moves away from the parts feeder,
The parts are suspended from the neck, slide down on the wire rods 1 and 2, reach the guide rail, and are transferred to the guide rail in the suspended state.

[0003]

With the above-described transporting means, it is necessary to maintain the hanging state at all times. Therefore, if the wire rods 1 and 2 have too high a height difference or their traveling directions are curved. The bolt 3 is tilted so that a normal hanging posture cannot be obtained.
It may happen that it falls off between two. Further, if the so-called steep inclination is made by lowering the traveling direction of the conveying means too much, the parts will have an excessive downhill speed and impactally enter the guide rails, and at this time, there is a problem that the parts are flipped off from the guide rails. Occur. Further, when such a transportation means is installed over a long distance, there is a problem in that the transportation is stopped there because it is caught at some point because it depends on downhill due to its own weight. Further, such downhill has a certain limit even if an attempt is made to increase the conveying speed, which is disadvantageous for improving the conveying efficiency.

[0004]

Means for Solving the Problems and Their Functions The present invention has been provided to solve the above-mentioned problems.
The present invention focuses on the behavior of parts that are transferred to the guide rails in the transitional period, based on the idea that the transportation means toward the guide rails is formed of a tubular member and air transportation is adopted. First, the invention of claim 1 inserts a shaft portion of a shaft-shaped component with a head between guide rails composed of a pair of rail members arranged in parallel, and slides the head of the component on the upper surface of the guide rail. In the case of a type in which the parts are transported in a hanging state, the parts feeder and the supply pipe that opens near the end of the guide rail are connected by a delivery hose so that the carrier air is blown into the delivery hose near the parts feeder. It is characterized by the fact that an interrupting mechanism is installed near the opening of the supply pipe to temporarily stop and then pass the parts.Parts that have been transported by air at high speed are temporarily stopped by the interrupting mechanism. Then, it is transferred onto the guide rail at a slow speed. The invention of claim 2 is characterized in that, in the invention of claim 1, the supply pipe and the guide rail are arranged so as to have a substantially parallel relative positional relationship. In addition to the action of the interrupting mechanism of the invention of claim 1, Then, the parts are smoothly transferred onto the guide rails, and the behavior of the parts in the transitional period of transfer becomes smooth. According to a third aspect of the present invention, in the first aspect, a guide plate is erected on the guide rail near the supply pipe, and an air nozzle for pressing the head of the component with an air flow is installed. Even if the parts bounce abnormally on the guide rails, the guide plate prevents them from falling, and even if the center of gravity of the hanging parts is high, the air flow The suspension of the neck is normally maintained by pressing the heads of the parts. According to a fourth aspect of the present invention, the shaft portion of the shaft-shaped component with a head is inserted between the guide rails formed of a pair of rail members arranged in parallel,
In the type in which the head of the component is slid on the upper surface of the guide rail and is transferred in a suspended state, air is jetted to the shaft portion of the component to promote rotation of the component to establish a suspended state. In this method, air pressure is applied to the shaft portion of the component that is being transferred onto the guide rail in a substantially horizontal direction or inclined to some extent to promote rotation of the component around its head, It is sure that it will be hanging.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the illustrated examples. First, the overall layout of the apparatus will be described with reference to FIG. 2. The parts feeder 6 includes a vibrating section 7 and a circular bowl 8 arranged on the vibrating section 7.
The bowl 8 is provided with an outlet pipe 9, to which a flexible delivery hose 10 made of synthetic resin is connected. A bowl-shaped shaft-shaped component as shown in FIGS. 9 and 10, that is, an iron bolt is contained in the bowl 8, and the bolt is sequentially delivered from the outlet pipe 9 by vibrating the bowl 8. It is a thing. The air nozzle 11 is opened in the vicinity of the parts feeder, that is, inside the outlet pipe 9, and the air hose 12 is connected to it.
The air hose 12 is set to have various lengths, but for example, it may extend from 2 to 3 m to about 10 m when it is long. In addition, when the dimensions of the bolt are illustrated,
The head has a diameter of 10 mm and the shaft has a length of about 12 mm. The bolt 13 shown in FIG. 9 is a shaft portion 15 which is slightly longer than the normal head portion 14, and the center of gravity thereof is located considerably below. On the other hand, the bolt in Figure 10 is a so-called stubby type,
The center of gravity is at a very high position.

The guide rail 16 is fixed to a stationary member 17 by a support leg 18, and is integrated by a bolt 21 with a distance piece 20 interposed between a pair of rail members 19 arranged in parallel. . Guide rail 16
1 is in an inclined state in which the right side is lowered as shown in FIG. 1, and the distribution mechanism 22 is connected to the right end. Guide rail 16
As shown in FIG. 3, guide plates 23, 23 are welded along the outer sides of the rail members 19, 19 and the distance between both guide plates is wider at the top. Reference numeral 24 is the upper surface of the guide rail 16.

The metal supply pipe 25 is made of, for example, stainless steel, and has a circular cross section here, and is connected to the delivery hose 10. Intermittent mechanism 26
Plays a role of stopping the bolt 13 that has vigorously entered the supply pipe 25 and then passing it at a low speed. A stopper piece 28 is inserted into the case 27 so that the stopper piece 28 can slide forward and backward. A passage hole 29 is opened in one of the pieces, an air cylinder 30 is fixed to the case 27, and a piston rod 31 of the air cylinder 30 is connected to the stopper piece 28. The right end of the supply pipe 25 is inserted between the guide plates 23, 23, and opens in front of the guide rail 16 in FIG. The open end may extend to overlap the upper surface 24 of the guide rail. In the state of FIG. 1, the stopper piece 28 is closing the passage of the supply pipe 25 and the bolt 13 is once stopped, and the stopper piece 28 is pulled down by the air cylinder 30 so that the passage hole 29 forms the passage hole 29. If the bolt 13 passes through the passage hole 29, the bolt 13 slides down the inside of the supply pipe at a low speed and is transferred onto the upper surface 24 of the guide rail 16. In order to allow the bolts 13 to slide down in the supply pipe 25, the supply pipe 25 has a structure shown in FIG.
As described above, the supply pipe 25 and the guide rail 16 are in a substantially parallel relative positional relationship. The term “substantially parallel” means a state in which the bolt 13 from the supply pipe 25 can be smoothly transferred and mounted on the upper surface 24 of the guide rail, and conversely, as shown in FIG. If the supply pipe 25 is inclined, the bolt 13 from the supply pipe enters the upper surface 24 of the guide rail at a steep angle. Since it may occur that a proper hanging state is not obtained due to being flipped, it means that such a situation is dealt with, and the function of the intermittent mechanism is taken into consideration. In an actual case, the allowable angle formed by the supply pipe 25 and the guide rail 16 is, for example, about 20 degrees. The auxiliary member 32 shown in FIG. 6 is connected to the end of the guide rail 16. This is an inverted U-shaped member made of wire and has elongated legs 33, 33 connected to the upper surface 24 by smooth welding. The auxiliary member 32 has a form in which the guide rail 16 is extended rearward. Also. Reference numeral 34 is a support leg for fixing the supply pipe 25 to the stationary member 17.

A regulating bar 35 is installed above the center of the guide rail 16 to prevent the head portion 14 of the bolt from jumping up by some external force. This will be described with reference to FIG. 5. The support arm 36 is fixed to the guide rail 16 with the bolt 21, and the arm is bent as shown in the drawing so that the regulation bar 35 fixed with the bolt 37 causes the guide bar 19 to move. , Located just above the center of 19.

When the inclination of the guide rail 16 is gentle, the vibrator 38 shown in the figure is attached. Explaining it according to FIG. 4, an iron piece 39 is fixed to the lateral side surface of the guide member 19 with a bolt 21,
A support plate 41 is connected to a spring plate 40 fixed to it, and an electromagnetic solenoid 42 is attached thereon.
Since the movement itself approaches and separates from the iron piece 39, the spring plate 40 flexes left and right and vibrates. This is transmitted to the guide member 19 via the iron piece 39, and the entire guide rail 16 vibrates. This causes the bolt 13 to slide down. In order to make the vibration of the guide rail 16 appropriate, an elastic body 49 such as rubber may be interposed between the support leg 18 and the guide rail 16 as shown in FIG.

Stays 43 and 44 are welded to the guide plate 23 and the rail member 19, respectively, and air nozzles 45 and 4 are attached thereto.
6 is attached, and by bending the stay 43 as shown in FIG.
It is designed to aim at the central part of 9,19. Both air nozzles hold the head securely with air pressure in the case of a stubby bolt having a high center of gravity as shown in FIG. Reference numerals 47 and 48 are air hoses connected to the air nozzles 45 and 46.

Although there are various functions of the distribution mechanism 22, here, the head 14 of the bolt is connected to the robot arm 5.
An example in which the chuck 51 is moved to 0 is shown. That is, the sliding piece 53 is inserted in the outer case 52 in a retractable state, and the recess 5 for housing the shaft portion 15 of the bolt is formed.
4 is formed in the vertical direction of the drawing. Outer case 5
2 has a through groove 55 for allowing the shaft portion 15 to pass therethrough.
4, the guide rail 16 is welded to the outer case 52 in conformity with the through groove 55 as is clear from FIG. An air cylinder 56 is connected to the outer case 52, and its piston rod 57 is fixed to the sliding piece 53. The upper surfaces of the outer case 52 and the sliding piece 53 are flat and continuous and flush with each other.
Therefore, in the bolt 13 transferred with the guide rail 16 suspended from the neck, the shaft portion 15 moves from the through groove 55 to the concave portion 5.
4, the head 14 of the bolt protrudes from the upper surface of the sliding piece 53 as shown in FIG. Then, when the sliding piece 53 is moved downward in FIG. 7 by the operation of the air cylinder 56, the bolt also moves together with it and the head 14 stops at the position shown by the chain double-dashed line in FIG.
1 and the arm 50 and the chuck 51 pick up the head 14 and supply it to another destination. A magnet (permanent magnet) is used to smoothly insert the bolt 13 into the recess 54. Although various structures are conceivable for installing the magnets, the magnet 58 having a rectangular parallelepiped shape is used here as the outer case 5.
It is fixed to the upper surface of 2 with bolts 59, and the magnet 5
8 is located right beside the recess 54 in FIG. 7,
The sliding piece 53 is installed so that it does not interfere with the movement of the sliding piece 53. As another method of disposing the magnets, although not shown, there is a method of embedding the magnets inside the sliding piece 53 or in the outer case 52. In the above embodiment, the air hose to the air cylinder and the electric wire to the vibrator are not shown, but they can be implemented by a conventionally known means. Further, although the supply pipe 25 described above is in the form of a pipe having a circular closed cross section, the cross section in which the upper part is opened between the case 27 and the guide rail 16 as shown in FIG. Such a gutter-shaped cross section is also possible, and the supply pipe of the present invention is a concept including such a cross-sectional shape.

The operation of this embodiment will be described below. The bolts 13 are vigorously conveyed at high speed in the delivery hose 10 by air conveyance from the parts feeder 6 and are forcibly stopped temporarily by the stopper piece 28. In the case of FIG. 1, the number of stopped bolts 13 is two, and when the stopper pieces 28 are pulled down by the air cylinder 30, the bolts 13 pass through the passage holes 29 at a low speed and reach the upper surface 24 of the guide rail 16. Reprinted. The bolt behavior at this time is shown in FIG. 11, and the bolt 13 from the supply pipe 25
Slides smoothly on the upper surface 24, and the shaft portion 15 enters the space between the rail members 19 by its own weight and is in a hanging state. At this time, the bolt 13 may be laterally flipped for some reason, and the guide plates 23, 23 regulate it. When the bolt has a high center of gravity as shown in FIG. 10, blow air from the direction shown by the arrow in FIG.
Make the hanging state stable. The vibrator 38 is operated in order to accelerate the conveyance of the guide rail 16.

An embodiment of the invention of the transfer method will be described with reference to FIGS. 15 and 16. The basic idea behind this is to inject air into the shaft portion 15 of the bolt 13 to cause the bolt 13 to move.
Is rotated around the head 14 and is pushed down to take a normal posture of hanging the neck.
Suitable for stubby type bolts with a high center of gravity such as. In both figures, the air nozzle 60 shows the supply pipe 25.
The stay 61 for this purpose is installed downward near the end of the rail member, and one end of the stay 61 is welded to the rail member 19 and the other end is welded to the air nozzle 60. Reference numeral 62 is an air hose. This embodiment employs the above-mentioned auxiliary member 32 in which the guide rail 16 is extended rearward.
Therefore, the auxiliary member 32 is arranged between the end of the supply pipe 25 and the guide rail 16.

The operation of this embodiment will be described. In FIG. 15, air is injected where the bolt 13 emerges from the supply pipe 25, and its air pressure acts on the shaft portion 15. Therefore, the bolt 13 rotates counterclockwise about its head 14. , Only the shaft portion 15 is inserted between the legs 33, 33, and FIG.
A normal hanging state such as 6 is obtained. Then, it receives the transfer vibration of the vibrator 38 and slides down on the guide rail 16.

In the embodiment shown in FIG. 2 above, the auxiliary member 32 is used. When the auxiliary member 32 is stopped, the supply pipe is opened above the end of the guide rail and comes out of the supply pipe. Air may be injected into the bolt as described above.

[0016]

[Effect] According to the present invention, the parts sent out from the parts feeder at high speed are temporarily stopped at the part of the supply pipe and then transferred onto the guide rail at an appropriate low speed. It will not be flipped by the upper surface of the, and it will definitely shift to the normal hanging state. Furthermore, since it becomes possible to eject the carrier air into the delivery hose in the vicinity of the parts feeder, even if the delivery hose is extremely long, it is possible to improve the efficiency by high-speed air transportation. Since the relative positions of the supply pipe and the guide rail are set substantially parallel to each other, the parts are smoothly transferred by sliding on the guide rail, and the hanging state is organically related to the speed control described above. It will certainly happen. Since the guide plate is installed on the guide rail and the head of the part is pressed with air,
Even stubby parts with a high center of gravity are transferred while maintaining the normal hanging state. This is a method in which air is jetted to the shaft of the component to rotate the component around its head, so even a stubby component with a high center of gravity is positively forcibly displaced to the hanging posture. It will be realized. As described above, the present invention solves the above-mentioned problems such as the lateral inclination of the conveying means and the steep inclination in the conveying direction.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal side view showing an embodiment of the present invention.

FIG. 2 is an external side view showing the entire apparatus.

FIG. 3 is a sectional view taken along line (3)-(3) of FIG. 1;

FIG. 4 is a sectional view taken along line (4)-(4) of FIG. 1;

FIG. 5 is a sectional view taken along line (5)-(5) of FIG. 1;

FIG. 6 is a partial plan view showing an end portion of a guide rail.

FIG. 7 is a plan view of the dispensing device.

FIG. 8 is a front view of the dispensing device.

FIG. 9 is an external side view of the bolt.

FIG. 10 is an external side view of the bolt.

FIG. 11 is a schematic side view showing a relative positional relationship between a supply pipe and a guide rail.

FIG. 12 is a schematic side view showing a relative positional relationship between a supply pipe and a guide rail.

FIG. 13 is a vertical sectional view showing a conventional conveying means.

FIG. 14 is a perspective view showing a modified example of the supply pipe.

FIG. 15 is a vertical sectional side view showing an operating state of another embodiment.

FIG. 16 is a vertical cross-sectional side view showing an operating state of another embodiment.

[Explanation of symbols]

 19 rail member 16 guide rail 14 head 13 shaft-like component 15 shaft 24 upper surface 6 parts feeder 25 supply pipe 10 delivery hose 11 air nozzle 26 interrupting mechanism 23 guide plate 45, 46 air nozzle

Claims (4)

[Claims] 1. A shaft portion of a shaft-shaped component with a head is inserted between guide rails composed of a pair of rail members arranged in parallel, and the head of the component is slid on the upper surface of the guide rail in a suspended state. In the transfer type, the parts feeder and the supply pipe that opens near the end of the guide rail are connected by a delivery hose, and the carrier air is ejected into the delivery hose in the vicinity of the parts feeder. An apparatus for transferring a shaft-shaped component with a head, characterized in that an interrupting mechanism for temporarily stopping the component and then allowing the component to pass therethrough is installed near the opening of the pipe. 2. The apparatus for transporting a shaft-shaped component with a head according to claim 1, wherein the supply pipe and the guide rail are arranged so as to have a substantially parallel relative positional relationship. 3. The head according to claim 1, wherein a guide plate is erected on a guide rail near the supply pipe, and an air nozzle for pressing the head of the component with an air flow is installed. Transfer device for shaft-like parts with parts. 4. A shaft portion of a shaft-shaped component with a head is inserted between guide rails composed of a pair of rail members arranged in parallel, and the head of the component is slid on the upper surface of the guide rail in a suspended state. A method for transferring a shaft-shaped part with a head, characterized in that, in a transfer type, air is jetted to a shaft part of the part to accelerate rotation of the part and make a hanging state.