JP2022172437A - Component feeding control device and control method - Google Patents

Abstract

To form an opposing air flow by opposing the reverse air flow in a component supply passage at the proper time to prevent components from going backwards and make it possible to convey components at high speed.SOLUTION: A conveying air jet 27, which opens onto a component supply passage 9 and injects conveying air into a component 1, is provided in a passage member 6. An opposing air jet 34, opening in the supply passage 9 and set to inject an opposing air stream in a state opposite to the reverse air stream 33 in a direction opposite to that of the component conveying air, is provided in the passage member 6. An injection start timing from the opposing air jet 34 is configured to be at or about the same time as the injection start timing from the conveying air jet 27. The flow velocity of the reverse air flow 33 is set to be eliminated or to be such that no reverse return of the component 1 occurs.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a parts feed control device and a control method for injecting carrier air into a parts supply passage to cause parts to reach a target location.

Japanese Unexamined Patent Application Publication No. 2007-320769 describes a method of injecting conveying air into a component supply passage formed in a passage member to cause the components to reach their target locations.

Japanese Patent Application Laid-Open No. 2007-320769

The above Patent Document 1 describes that air is continuously injected to the parts in the parts supply passage so that the parts reach the target location. It is also described that the first of the following parts waiting in line is given a preliminary air injection to start the transfer.

In such a prior art, since air is continuously injected to the parts, the air pressure in the part supply passage between this air injection port and the succeeding parts increases, and the air pressure toward the succeeding standby parts is reversed. A phenomenon occurs in which an air flow is generated and the part placed in the free state is pushed back. As measures to prevent such a push-back phenomenon, a pressing member that presses the component against the inner surface of the component supply passage, or an electromagnet or a retractable permanent magnet that attracts the component to the inner surface of the component supply passage is known.

However, in the case of such a method, for example, in the case of a disc-shaped part having a diameter of about 5 mm, it is difficult in terms of accuracy control to accurately press a predetermined portion of the part with the pressing member. Alternatively, if magnetic force is used, a special structure must be employed in order to separate only one from the row of standby parts due to residual magnetism.

The present invention has been provided to solve the above-mentioned problems, and forms an opposing air flow opposing the reverse air flow generated in the component supply passage at an appropriate time to prevent the component from returning, Together, it enables high-speed conveyance of parts.

The invention according to claim 1 is a parts supply control device,
In a type in which conveying air is injected into a parts supply passage formed in a passage member to reach the target location of the parts,
a conveying air injection port that opens into the component supply passage and injects conveying air to the component is provided in the passage member;
The passage member is provided with an opposed air injection port that opens into the component supply passage and injects a counter air flow in a state of being opposed to a reverse air flow generated by the conveying air in a direction opposite to the component conveying direction,
It is characterized in that the injection start timing from the opposed air injection port is arranged to coincide with the injection start timing from the carrier air injection port.

The part is conveyed toward the target location by blowing the conveying air from the conveying air injection port onto the part. The conveying air blown onto the parts plays a role of pushing and conveying the parts toward the target location, and at the same time, generates a reverse air flow toward the succeeding standby parts. Since the opposing airflow that opposes the reverse airflow is jetted from the opposing air injection port, the flow velocity of the reverse airflow is eliminated or the speed is reduced to such an extent that the succeeding standby parts do not reverse. Therefore, the factor that causes the subsequent standby component to move backward is eliminated, and the component can be reliably prevented from moving backward.

If the pressing member is configured to press against the part in order to prevent the part from returning, it is difficult to accurately press the part at a predetermined position if the part is miniaturized. For example, when components are waiting in a row, there may be slight gaps between the components, and as a result of the displacement of the stop position of the component, it becomes difficult to hold down the correct position of the component. In the present invention, the flow rate of the reverse air flow to the subsequent component that is waiting is eliminated or the flow speed of the reverse air flow is reduced so that the standby component cannot move back. Even if there is an error in the position, the return prevention is reliably achieved.

Since there are no members that come into direct contact with the parts, such as stopper members or pressing members that inhibit the movement of the parts, there is no malfunction or breakage of these members at all. Operational reliability is improved.

Since the counter air flow is opposed to the reverse air flow, the degree of air pressure drop behind the part being transported is slowed down, that is, the pressure drop behind the part is reduced. In other words, the opposing air flow is injected in a state in which it is added to the injected carrier air. Therefore, it is possible to maintain a sufficient pneumatic conveying force for the parts, reduce the decrease in the conveying speed, and shorten the conveying time.

In order to improve production efficiency, the speed of conveying air is increased to increase the speed of conveying parts. Reversals such as are more likely to occur. However, by utilizing the opposing air flow according to the present invention, even if the flow velocity of the conveying air is increased, it is possible to reliably prevent the parts from returning, which is effective in improving productivity. The opposing airflow can be strengthened in accordance with the degree of speed increase of the conveying airflow, eliminating the need to add special components.

Even if the parts are small and lightweight, the reverse air flow can be reliably prevented because the counter air flow acts on the reverse air flow. Also, even if the parts are made of non-magnetic material, they do not use magnets, so they are not affected by the type of material.

If a pick-out mechanism or an escape mechanism is employed for ejecting only one of the first parts in the queue of waiting parts and moving the second part to the forefront position, such a mechanism may be provided with the above-described mechanism. When the reverse airflow is blown, the first freed part is not transported. However, in the present invention, the reverse air flow is stopped and eliminated, or the reverse air flow is reduced to such an extent that the components do not return, so that the above mechanism can be operated normally.

The invention according to claim 2 is a component supply control method,
In a type in which conveying air is injected into a parts supply passage formed in a passage member to reach the target location of the parts,
a conveying air injection port that opens into the component supply passage and injects conveying air to the component is provided in the passage member;
A component provided in the passage member with an opposing air injection port that opens into the component supply passage and injects a counter air flow in a state opposed to a reverse air flow generated by the conveying air in a direction opposite to the component conveying direction. Prepare the feed control device,
The injection start timing from the opposing air injection port is set to coincide with the injection start timing from the carrier air injection port to eliminate the flow velocity of the reverse air flow, or It is characterized by slowing down to the extent that it does not reverse.

In the above method invention, either the flow velocity of the reverse air flow is eliminated by setting the injection start timing from the opposed air injection port to coincide with the injection start timing from the carrier air injection port, or Or, since the following parts are slowed down to the extent that they do not move back, the pressure factor that pushes back the following standby parts disappears, and the following parts can be made to wait in the normal position, and orderly and accurate parts supply can be achieved. come true.

The injection start timing from the opposing air injection port is the same as the injection start timing from the carrier air injection port, or the injection start timing from the opposite air injection port is slightly earlier than the injection start timing from the carrier air injection port. Alternatively, the injection start timing from the opposing air injection port is set to be slightly later than the injection start timing from the carrier air injection port. is doing.

When the injection start timing from the opposing air injection port coincides with the injection start timing from the carrier air injection port, in the component supply passage space between the carrier air injection port and the standby component, toward the standby component The phenomenon is such that the jetted air from the opposed air jet port collides with the backward air flow. In addition, when the injection start timing from the opposed air injection port is earlier than the injection start timing from the carrier air injection port, the air in the component supply passage space between the carrier air injection port and the standby component moves in the transport direction. Since the restrained air flow is formed, the phenomenon occurs in which the air from the carrier air injection port cannot go in the opposite direction. Furthermore, when the injection start timing from the opposing air injection port is later than the injection start timing from the carrier air injection port, the standby component is placed in the component supply passage space between the carrier air injection port and the standby component. The reverse airflow toward the standby parts is blown against the standby parts, and the standby parts are pushed back slightly in the opposite direction, but the airflow from the opposing air injection port flows later and the reverse airflow is pushed back. As a result, the speed of the reverse air flow disappears, or the speed of the following parts is reduced to the extent that they do not reverse.

It is sectional drawing of the whole apparatus, and sectional drawing of a partial location. 4A and 4B are a plan view and a cross-sectional view of a passage member; FIG. FIG. 4 is a perspective view of a part; It is a control system diagram with working air and signal lines added.

Next, a mode for carrying out the parts feeding control device and the control method of the present invention will be described.

1 to 4 show Embodiment 1 of the present invention.

First, the parts to be fed will be described.

There are various forms of delivered parts. As shown in FIG. 3(A), the component 1 has a disc-shaped main body 2 and a cylindrical protrusion 3 integrally provided at the center thereof. The protrusion 3 has a female thread 4 formed therein. . It is a so-called disk-shaped nut. Alternatively, the component 1 shown in FIG. 3(B) has a through hole 5 in the center of the rectangular parallelepiped main body 2 . In this embodiment, the parts shown in the former FIG. 3(A) are fed.

Next, the passage member will be explained.

The passage member 6 is a part that controls the feeding of parts, and may be of a straight feeder type in which the passage member 6 is installed in a horizontal posture and conveying vibrations are applied to the passage member 6, such as sliding down conveyance by inclination. Here it is a downhill type with a slope. As shown in FIG. 1(B), a sliding plate 7 made of an elongated plate member is fixed with an elongated cover plate 8 having a cross-sectional shape suitable for the shape of the component to form a closed cross-sectional structure. is formed. Here, the sliding plate 7 and the cover plate 8 are made of stainless steel.

The cross-sectional shape of the component supply passage 9 is suitable for the outer shape of the component 1, and is a convex shape having a wide portion 10 through which the main body 2 passes and a narrow portion 11 through which the projection 3 passes. A space 12 is formed between the wide part 10 or the narrow part 11 and the part 1 so that the part 1 can slide down smoothly. A shallow groove 7a is formed in the central portion of the sliding plate 7 to discharge impurities such as antirust oil and to reduce the frictional resistance of the lower surface of the main body 2. As shown in FIG. For ease of viewing, FIG. 2A shows a state in which the cover plate 8 is removed.

A parts feeder 14 is attached to a stationary member 13 such as a machine frame of the apparatus, and a supply hose 15 extending therefrom is joined to the upper side of the passage member 6 . The supply hose 15 is made of a synthetic resin material such as urethane resin or polypropylene resin. The parts 1 are fed to the passage member 6 by the conveying air blown into the outlet portion of the parts feeder 14 .

A feed hose 17 is connected to the lower end of the passage member 6 via a fitting 16 . The part 1 passes through a feed hose 17 to reach a destination such as a screwdriver. The cross-sectional shape of the passage of the supply hose 17 is the same as the cross-sectional shape of the component supply passage of the passage member 6 shown in FIG. 1(B). The feed hose 17 is also made of a synthetic resin material such as urethane resin or polypropylene resin.

Next, the clipping mechanism will be explained.

The picking-out mechanism 18 has a function of sending out only one component at the forefront from the components 1 waiting in the component supply passage 9 in a row, and is also called an escape mechanism. The part row consists of six parts 1a, 1b, 1c, 1d, 1e, and 1f.

A first restricting member 20, which prohibits sliding down of the foremost component 1a, protrudes into the component supply passage 9 and receives the front side of the main body 2, thereby suppressing sliding down of the entire row of components. Various advance/retreat driving means such as an electromagnetic solenoid and an air cylinder can be used to advance/retreat the first restricting member 20 . Here, it is an air cylinder 21 and its piston rod constitutes the first restricting member 20 . The same reference numeral 20 is also attached to the piston rod.

A second restricting member 22 for inhibiting the sliding down of the second component 1b protrudes into the component supply passage 9 and receives the front side of the projection 3, thereby suppressing the sliding down of the row of components after the component 1b. Various advance/retreat driving means such as an electromagnetic solenoid and an air cylinder can be used to advance/retreat the second restricting member 22 . Here, it is the air cylinder 23 and its piston rod constitutes the second restricting member 22 . The same reference numeral 22 is also attached to the piston rod.

FIG. 1 shows a state in which the first restricting member 20 and the second restricting member 22 protrude into the component supply passage 9. As shown in FIG. Here, when the first restricting member 20 is retracted by the retracting operation of the air cylinder 20, only the foremost component 1a slides leftward in FIG. The part 1a that has descended so far is indicated by a chain double-dashed line. Thereafter, when the first restricting member 20 protrudes into the component supply passage 9 and the second restricting member 22 retreats from the component supplying passage 9, the second component 1b slides down and is received by the first restricting member 20.例文帳に追加At the same time, the second restricting member 22 enters the component supply passage 9 and receives the third component 1c.

By repeating the above operation, the parts are sent out one by one. The air cylinders 21 and 23 are provided with sensors 24 and 25 for detecting a state in which the first regulating member 20 and the second regulating member 22 have advanced into the component supply passage 9 and a state in which they have retreated from the component supply passage 9. installed. These sensors 24 and 25 are generally adopted capacitive proximity sensors.

FIG. 1 shows the part 1a that has reached the vicinity of the inlet of the feeding hose 17 after the foremost part 1a has been sent out by the operation of the cutting mechanism 18, as described above. Therefore, the foremost component in the waiting component line at this time is the component 1b positioned second.

Next, the carrier air injection port will be explained.

A conveying air injection port 27 is provided in the sliding plate 7 near the left lower end (conveying direction side) of the passage member 6 to allow the component 1 to reach the target location at high speed. A conveying air injection port 27 is formed in the sliding plate 7 by forming an inclined air hole 28 so that air can be injected in the conveying direction. A sensor 29 is attached to the supply hose 17 to detect the component 1a (shown by the chain double-dashed line) that slides down from the cutting mechanism 18 and passes the carrier air injection port 27 immediately after the component 1a. An air supply pipe 30 is connected to the air hole 28, and this air supply pipe 30 extends from an air switching valve which will be described later. The sensor 29 is of the same type as the sensors 24 and 25 of the working air switching valve.

As is clear from FIG. 1, the carrier air injection port 27 is provided in the passage member 6 between the component 1a shown by the two-dot chain line and the foremost component 1b on standby. That is, the sliding plate 7 in the space S is opened.

In order to ensure that the part 1a stopped by the first restricting member 20 starts sliding down, an auxiliary injection port 31 is opened and an air supply pipe 32 is connected thereto. When the lower surface of the main body 2 adheres to the surface of the sliding plate 7 with anticorrosive oil or the like, the adhered portion is peeled off by the air jetted from the auxiliary injection port 31 to smoothly start sliding down.

Next, the opposing air injection port will be explained.

When the carrier air is jetted from the carrier air jet port 27, the foremost part 1a indicated by the two-dot chain line is vigorously transported in the direction of the arrow and reaches the target location. Since a gap similar to the gap 12 is present between the part 1a in the supply hose 17 and the inner surface of the part supply passage 9, the amount of air passing through the gap 12 is reduced. As a result, the air pressure behind the foremost component 1a becomes high, and in the space S from the conveying air injection port 27 to the component 1b received by the first restricting member 20, a reverse air flow is generated in the direction opposite to the conveying direction. Occur. This reverse airflow is indicated by arrow 33 . A section from the conveying air injection port 27 to the part 1b received by the first restricting member 20 is denoted by L. As shown in FIG.

When the reverse airflow 33 as described above is generated, even if the first regulating member 20 moves backward, the foremost part 1a receives the dynamic pressure of the reversed air and cannot start descent, or waits in line. A phenomenon occurs in which the parts 1b to 1f that are in contact with each other move backward and are pushed back.

In order to solve such a problem, an opposing air injection port is opened in the component supply passage 9 and injects a counter air flow in a state of facing a reverse air flow 33 generated by the conveying air in a direction opposite to the component conveying direction. 34 is provided in the passage member 6 . As shown in FIG. 2B, oblique air holes 35 are formed in the cover member 8 and an air supply pipe 36 is joined thereto. The air hole 35 is inclined so that the opposite air injection port 34 at the tip is lowered, and the opposite air injection port 34 opens toward the boundary between the main body 2 and the projection 3 . In FIG. 2(A), the air supply pipe 36 is illustrated by a chain double-dashed line. In this way, the air injected from the opposing air injection port 34 flows substantially in the conveying direction.

When the opposed air flow is jetted from the opposed air jet port 34 , the air flows into the space S through the gap 12 . Here, they collide with the reverse airflow 33 and cancel each other out. In practice, it is believed that both colliding airflows become turbulent, eliminating or weakening an orderly airflow as indicated at 33 . In this way, the reverse air flow 33 has no flow velocity, or is so slow that it is not possible to push back the component 1b.

Next, the auxiliary opposed air injection port will be explained.

Since the reverse air flow 33 is substantially extinguished at the opening of the opposed air jet port 34, it is sufficiently effective to prevent the subsequent parts 1b to 1f from coming back, but the foremost part of the waiting parts row It works most effectively to prevent the part 1a from returning back. As a precaution, an auxiliary opposing air injection port 38 is provided near the rear end of the row of parts in order to prevent the following parts 1b-1f from moving backward. This arrangement is the same as that of the opposed air injection port 34 described above, and the air holes 39 and the air supply pipe 40 are arranged in the same manner.

The air injected from the auxiliary opposed air injection port 38 passes through the air gap 12 and reaches the section S, where the flow velocity of the reverse air flow 33 is reduced or eliminated. When the component 1a is to be conveyed at even a little higher speed, the air injection from the conveying air injection port 27 is strengthened. It is important to arrange the auxiliary opposing air jets 38 in preparation for such a case.

In the above explanation, the phenomenon in which the flow speed of the reverse air flow 33 disappears or becomes weak is mainly described. The elements acting on the part under pressure are also acting secondarily.

Next, lubricant supply will be described.

For example, if the main body 2 of the part 1 has a diameter of about 8 mm and is small and lightweight, the inertial force of the part cannot be fully utilized. In particular, when the feeding hose 17 has a length of 2 m to 3 m and is curved, this problem becomes serious.

In order to solve such a problem, the lubricant is supplied to the air supply pipe 30 connected to the conveying air injection port 27 so that the lubricant spreads to the inner surface of the supply hose 17 and adheres thereto.

A container 42 containing a liquid lubricant 41 is attached to the air supply pipe 30 , and the upper end of a suction pipe 43 inserted into the liquid of the lubricant 41 opens to the air supply pipe 30 . The liquid lubricant 41 is sucked up by the flow velocity of the carrier air flowing through the air supply pipe 30 , becomes atomized, floats in the carrier air, and is sent to the supply hose 17 . Particles of the lubricant 41 adhere to the inner surface of the feed hose 17 along with the flow of the carrier air, forming a lubricating film thereon. As an example of the lubricant 41, silicone oil or a liquid containing silicone oil as a main component is used.

Therefore, the part 1 is smoothly conveyed under the condition that frictional resistance with the inner surface of the supply hose is small. In particular, at a portion where the feeding hose 17 is curved, the part 1 slides while strongly contacting the inner surface of the feeding hose on the curved outer peripheral side due to the centrifugal force. The amount of wear on the inner surface of the hose becomes abnormally large. Such a problem is also resolved by supplying the lubricant 41 .

Next, the operation of the component feeding control device will be explained.

The operation will be explained mainly with reference to FIG. 4, which is a control system diagram. In FIG. 4, arrows are signal transmission lines, and solid lines are supply and exhaust pipes for working air. Signals from each sensor 24 , 25 , 29 , etc. are transmitted to controller 44 . The control device 44 is composed of a sequence circuit and a simple computer device. A command signal from the controller 44 is transmitted to the air switching valve 45, which switches the air according to the command signal and sends the air to each air cylinder and injection port in a predetermined order.

The working air supplied to the air cylinder 21 puts the first restricting member 20 in the projecting position and prohibits the foremost part 1a from sliding down. At that time, the operation air supplied to the air cylinder 23 prevents the second component 1b from sliding down by the second restricting member 22 as well.

Here, when the air switching valve 45 is switched by the command signal from the control device 44 to operate the air cylinder 21 and the first restricting member 20 retreats, only the foremost component 1a slides down. At this time, the adhesion of the main body 2 is peeled off by the air jet from the auxiliary injection port 31 .

Then, when the first restricting member 20 advances again and the second restricting member 22 retreats, the second part 1b slides down and is received by the first restricting member 20.例文帳に追加At the same time, the second regulating member 22 advances again and prohibits the sliding down of the parts after the third part 1c. At this stage, the forefront component 1a has moved to the position indicated by the two-dot chain line in FIG.

When the carrier air is jetted from the carrier air jet port 27 at the stage of this movement position, the part 1a shown by the two-dot chain line is transported at high speed and reaches the target location. In accordance with a command signal from the control device 44 , the opposite airflow 33 generated by the air injection from the carrier air injection port 27 is opposed to the opposite airflow from the opposite air injection port 34 . Due to this so-called collision flow, the flow speed of the reverse air flow 33 disappears, or it becomes a low-speed flow that causes no actual damage. At the same time, a command signal from the control device 44 also causes an opposing air flow to be jetted from the auxiliary opposing air jet port 38, thereby completely preventing the backward movement of the row of components.

The injection start timing from the opposing air injection port 34 coincides with the injection start timing from the carrier air injection port 27 . It has three aspects.

The first is a case where the injection start timing from the opposed air injection port 34 and the injection start timing from the carrier air injection port 27 are the same. In the component supply passage space S between the carrier air jetting port 27 and the standby components, a phenomenon occurs in which the air jetted from the opposing air jetting port 34 collides with the reverse air flow 33 directed toward the standby components at the same time. .

The second case is when the injection start timing from the opposing air injection port 34 is earlier than the injection start timing from the carrier air injection port 27 . In the component supply passage space S between the carrier air jetting port 27 and the standby components, a restraining air flow directed in the transporting direction is already formed, so the air from the carrier air jetting port 27 cannot flow in the opposite direction. phenomenon.

The third case is when the injection start timing from the opposed air injection port 34 is later than the injection start timing from the carrier air injection port 27 . In the component supply passage space S between the carrier air injection port 27 and the standby component, a reverse air flow 33 directed toward the standby component is blown to the standby component, and the standby component is slightly pushed back in the opposite direction. A phenomenon in which the air flow from the opposed air jet port 34 flows later and the reverse air flow 33 is pushed back, the flow speed of the reverse air flow 33 disappears, or the speed of the subsequent parts is reduced to the extent that it does not reverse. becomes. In this case, it is necessary to select the injection timing so as not to be too late.

Although the above description of the embodiment mainly focuses on the parts feed control device, it also includes the description of the parts feed control method.

It should be noted that, instead of the various air cylinders described above, it is also possible to adopt an electric motor that outputs forward/backward movements.

The effects of the embodiment described above are as follows.

The component 1 is transported toward the target location by blowing the component 1 with the transport air from the transport air injection port 27 . The conveying air blown onto the part 1 plays a role of pushing out and conveying the part 1 toward the target location, and at the same time, generates a reverse air flow 33 directed toward the succeeding standby parts. Since the opposing airflow that opposes the reverse airflow 33 is jetted from the opposing air injection port 34, the flow speed of the reverse airflow 33 is eliminated, or the speed is reduced to the extent that the succeeding standby parts do not reverse. . Therefore, the factor that causes the subsequent standby component to move backward is eliminated, and the component 1 can be reliably prevented from moving backward.

If the pressing member is configured to press against the part in order to prevent the part from returning, it is difficult to accurately press the part at a predetermined position if the part is miniaturized. For example, when components are waiting in a row, there may be slight gaps between the components, and as a result of the displacement of the stop position of the component, it becomes difficult to hold down the correct position of the component. In the present embodiment, the flow velocity of the reverse air flow 33 for the succeeding component that is on standby is eliminated or the flow velocity of the reverse air flow 33 is reduced so that the standby component cannot move back. Even if there is an error in the stop position of the part, it is possible to reliably prevent the part from returning.

Since there is no member that directly contacts the component 1, such as a stopper member or a pressing member that prohibits component movement, there is no malfunction or breakage of these members at all. operation reliability is improved.

Since the counter air flow is opposed to the reverse air flow 33, the degree of air pressure drop behind the component 1 during transport is slowed down, that is, the pressure drop behind the component is reduced. In other words, the opposing air flow is injected in a state in which it is added to the injected carrier air. Therefore, a sufficient value of pneumatic conveying force for the part 1 can be maintained, reduction in the conveying speed can be reduced, and the conveying time can be shortened.

In order to improve production efficiency, the speed of the conveying air is increased to increase the speed of conveying the parts 1. In such a case, the flow speed and flow rate of the reverse air flow 33 increase. , the reversal as described above is more likely to occur. However, by utilizing the opposing air flow according to this embodiment, even if the flow velocity of the conveying air is increased, the part 1 can be reliably prevented from returning, which is effective in improving productivity. The opposing airflow can be strengthened in accordance with the degree of speed increase of the conveying airflow, eliminating the need to add special components.

Even if the component 1 is small and lightweight, the reverse airflow can be reliably prevented because the opposite airflow acts on the reverse airflow 33 . Also, even if the part 1 is made of a non-magnetic material, since it does not use a magnet, it does not depend on the type of material.

If a pick-out mechanism 18 or an escape mechanism 18 is employed, which feeds out only one component at the forefront of the queue of waiting components and moves the second component to the forefront position, such a mechanism may be used. When the reverse air flow 33 described above is blown, the first freed part 1 (1a) is not conveyed. However, in the present embodiment, the reverse air flow 33 is stopped and eliminated, or the reverse air flow 33 is set to such a low level that the part 1 does not return, so the above mechanism is operated normally. be able to.

An embodiment of the component supply control method includes:
In a type in which conveying air is injected into a parts supply passage formed in a passage member to reach the target location of the parts,
a conveying air injection port that opens into the component supply passage and injects conveying air to the component is provided in the passage member;
A component provided in the passage member with an opposing air injection port that opens into the component supply passage and injects a counter air flow in a state opposed to a reverse air flow generated by the conveying air in a direction opposite to the component conveying direction. Prepare the feed control device,
The injection start timing from the opposing air injection port is set to coincide with the injection start timing from the carrier air injection port, thereby eliminating the flow velocity of the reverse air flow, or It slows down to the extent that it does not go backwards.

In the embodiment of the parts supply control method of the invention, the same effects as those of the parts supply control device can be obtained. The injection start timing from the opposing air injection port 34 is set to coincide with the injection start timing from the carrier air injection port 27 to eliminate the flow velocity of the reverse air flow 33, or to prevent the subsequent component 1 from Since the speed is reduced to such an extent that it does not reverse, the pressure factor for pushing back the following standby parts disappears, the succeeding parts can be made to wait at a normal position, and orderly and accurate parts supply is realized.

As described above, according to the apparatus and method of the present invention, a counter air flow opposing the reverse air flow generated in the component supply passage is formed at an appropriate time to prevent the component from moving back and, at the same time, to can be transported at high speed. Therefore, it can be used in a wide range of industrial fields, such as an automobile body assembly process and a sheet metal assembly process for home electric appliances.

1 Parts 1a to 1f Standby Parts 2 Main Body 3 Projection 4 Internal Thread 6 Passage Member 7 Sliding Plate 8 Cover Plate 9 Parts Supply Passage 12 Gap 18 Cutting Mechanism 20 First Regulating Member 22 Second Regulating Member 27 Conveying Air Injection Port 33 Reverse Air Flow , Arrow 34 Opposed air injection port 38 Auxiliary opposed air injection port S Space L Section

Claims (2)

In a type in which conveying air is injected into a parts supply passage formed in a passage member to reach the target location of the parts,
a conveying air injection port that opens into the component supply passage and injects conveying air to the component is provided in the passage member;
The passage member is provided with an opposed air injection port that opens into the component supply passage and injects a counter air flow in a state of being opposed to a reverse air flow generated by the conveying air in a direction opposite to the component conveying direction,
The parts feed control device is characterized in that the injection start timing from the opposing air injection port is constructed so as to coincide with the injection start timing from the carrier air injection port. In a type in which conveying air is injected into a parts supply passage formed in a passage member to reach the target location of the parts,
a conveying air injection port that opens into the component supply passage and injects conveying air to the component is provided in the passage member;
A component provided in the passage member with an opposing air injection port that opens into the component supply passage and injects a counter air flow in a state opposed to a reverse air flow generated by the conveying air in a direction opposite to the component conveying direction. Prepare the feed control device,
The injection start timing from the opposing air injection port is set to coincide with the injection start timing from the carrier air injection port, thereby eliminating the flow velocity of the reverse air flow, or A parts feeding control method, characterized in that the speed is reduced to such an extent that it does not reverse.

Images