JP2006224256A - Suction nozzle device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction nozzle device which can quickly perform the movement and response of the suction and release of an object to be sucked, and which is small-sized and lightweight. <P>SOLUTION: In the suction nozzle device for the suction and carriage of the object, a suction port, a switching control supply port, a vacuum supply port, and a vacuum breaking supply port are opened on the outside peripheral portion of the suction nozzle device, and a switching device for switching the communication or the closure of a vacuum passage and/or a breakage passage is formed inside the suction nozzle device, wherein the switching device is composed of a piston B which slides inside a cylinder A by a compressive fluid supplied from the switching control supply port and an elastic member A, a valve seal A for switching the opening and closing of the vacuum passage by the slide of the piston B, and a valve seal B for switching the breakage passage by opening and closing the breakage passage by a positive pressure fluid supplied from the vacuum breaking supply port. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a suction nozzle device used for suction conveyance of articles.

  In the prior art, an adsorption nozzle is attached to the head portion of the adsorption conveyance device, and an ejector in which an adsorption hole of the adsorption nozzle is integrated with a switching device, a vacuum source, a switching device and a vacuum source by a pipe tube connected to the adsorption nozzle Switching between suction and release of articles to the suction nozzle is performed by a switching device at a remote location.

The head portion of the adsorption / conveyance device is required to reduce the weight in order to operate at an ultra-high speed, and high speed is required for the operation and response of the adsorption / release of the article / object to be adsorbed. At the start and stop of these adsorption and release operations, an amount of air corresponding to the internal volume of the path length of the piping tube is exhausted, the article is adsorbed by the suction nozzle, and the same amount or more of air is supplied to the piping tube. This is an operation model in which articles are released from the suction nozzle later, and the path length of the piping tube between the suction nozzle and the vacuum source hinders speeding up of the operation and response. That is, it takes a long time to discharge the volume of air in the pipe tube during the adsorption and release operations, and it takes a long time to supply air to release the vacuum state in the pipe tube. The following documents describe a vacuum supply unit with a suction pad in which an adapter unit for attaching a suction pad is engaged with a manifold unit, and a vacuum supply valve portion and an electromagnetic valve are provided on the manifold unit.
Japanese Patent Laid-Open No. 5-69365

  Since the suction nozzle attached to the head part of the suction conveyance device and the switching device that drives the suction and release of the suction nozzle are arranged at separate positions, the operation and response of the suction and release of articles and objects to be adsorbed is slow. There is a problem. To provide a suction nozzle device that solves the problem of incorporating a switching device for switching between suction and release into a suction nozzle that is compact and lightweight for speeding up the operation of suctioning and releasing articles and objects. It is.

   In the suction nozzle to be sucked and transported, a suction port, a switching control supply port, a vacuum supply port, and a vacuum break supply port are formed in the outer peripheral portion of the suction nozzle device, and the vacuum path and / or breakage path is connected and closed. Is a suction nozzle device formed inside the suction nozzle device, and vacuum is always supplied to the vacuum path from the vacuum supply port, and switching between conduction and closure is performed by the switching device in the vicinity of the nozzle head. Therefore, the operation of adsorbing and releasing the object to be adsorbed, the response speed is increased, and it is small and lightweight.

  Further, a switching device for switching between conduction and closing of the vacuum path includes a piston B that reciprocally slides inside the cylinder A by a compressed fluid and an elastic body A from a switching control supply port, and a sliding path of the piston B to the vacuum path. And a suction nozzle device comprising a valve seal A for switching conduction / closing of the suction port, and a switching device for switching conduction / closing of the breakage path are connected to the piston B by the positive pressure fluid from the vacuum breaking supply port. A suction nozzle device comprising a valve seal B that opens and closes contact and switches conduction and closing of the breakage path and suction port. The vacuum path that is always supplied with vacuum is connected and closed by the valve seal A with compressed fluid. In order to switch the destruction path with a positive pressure fluid, the adsorption and release operations and response of the object to be adsorbed are speeded up, and it is small and lightweight.

  The suction nozzle device according to the present invention will be described in detail below. In addition, the following description shows one structure of the suction nozzle apparatus which concerns on this invention, and is not specifically limited only to description content.

  In the suction nozzle device according to the present invention, in the suction nozzle for sucking and conveying, a suction port, a switching control supply port, a vacuum supply port and a vacuum breaking supply port are formed in the outer peripheral portion of the suction nozzle device, and a vacuum path And / or a switching device for switching conduction / closing of the breakage path is formed inside the suction nozzle device, and the switching device for switching conduction / closing of the vacuum path is compressed fluid and elastic body from the switching control supply port. A switching device which comprises a piston B which reciprocally slides inside the cylinder A by A and a valve seal A which switches conduction / closing of the vacuum path and the suction port by sliding of the piston B, and which switches conduction / closing of the breaking path. Consists of a valve seal B that opens and closes contact with the piston B by a positive pressure fluid from the vacuum break supply port to switch the breakage path and the suction port between conduction and closure. A preferred arrangement is that there is a piston B inside the cylinder A, a valve seal B inside the piston B, and the valve seal B, the piston B and the cylinder A are coaxial.

  The nozzle head 2 is formed with a hole of the suction port 3 through which a vacuum and a positive pressure fluid that breaks the object to be sucked and released is formed, and a suction pad 26 as a suction assisting tool may be attached. Alternatively, the nozzle head 2 and the cylinder A7 (which may also serve as a housing) may be fixed by screwing, press-fitting, bonding, or the like. The cylinder A may be integrally processed. The nozzle head 2 is made of a metal such as iron, brass, stainless steel, aluminum, etc., ceramic, plastic, rubber, etc., and has a small diameter such as a cylindrical shape or a polygonal column shape, and preferably has an outer diameter of 50 mm. It is the following cylindrical shape. More preferably, a suction pad made of a rubber material is simultaneously formed in the suction port of the nozzle head.

  The cylinder A7 is fixed or integral with the nozzle head 2, and a cavity in which the piston B18 reciprocally slides is formed. A vacuum path 20 is formed in at least one part of the peripheral wall, and a valve seal A6 (rubber, A step portion that opens and closes the vacuum path by contact with and release from the resin, an O-ring, an elastic body, etc., and is fixed to the supply unit 11 to seal the cavity, such as iron, brass, stainless steel, aluminum, It is a material such as metal, ceramic, plastic, rubber, etc., and has a shape such as a cylindrical column or a polygonal column such as a quadrangular column, preferably a columnar or rectangular column shape of 50 mm or less. More preferably, it is a cylindrical shape or a quadrangular prism shape of 30 mm or less.

  The piston B18 has a structure that reciprocates using the inside of the cylinder A7 as a piston, or a structure that performs a beating operation using a beating body such as a bellows or bellows. The valve seal A6 is freely brought into contact with and released from the stepped portion of the cylinder A7 by a reciprocating movement operation and a beating operation to open and close the vacuum path.

  In the case of reciprocating movement, the supply unit 11 is shielded by the sliding packing B16 and the sliding packing A9, and the cylinder chamber 10 is provided between the supply unit 11 and the supply unit 11 on the supply unit 11 side. Includes an elastic body A8 (an elastic body such as a spring, rubber, etc.) and is provided with a vacuum path that conducts the vacuum path 20 and the valve seal A6, and elastically presses the valve seal B19 against the fracture path B17 at substantially the center axis position. A fracture path is provided by the body B21 (an elastic body such as a spring or rubber). In the case of the beating operation, the beating body is attached to the cylinder A7 as a seal, and the valve seal A, the destruction path B, the valve seal B, and the like are formed.

  The supply unit 11 is provided with a switching control path 22 for conducting compressed fluid in the cylinder chamber 10 between the piston B18 and a supply port 12 for switching control, and a breaking path A14 for conducting positive pressure fluid to the breaking path B17, vacuum. A breaking supply port 13 is provided, a sliding packing B16 through which the piston B18 slides is provided, and is fixed to the cylinder A7.

  The suction nozzle device, consisting of the nozzle head, cylinder A, piston B, supply unit, etc., operates the piston B by controlling the compressed fluid from the supply port for switching control, while the vacuum from the vacuum source is always supplied to the vacuum path. Then, the valve seal A is brought into contact with and released from the stepped portion of the cylinder A, and is connected to and closed from the vacuum path and the suction port. Further, by controlling the positive pressure fluid for vacuum break from the vacuum break supply port, the positive pressure fluid for vacuum break is supplied to the suction port via the valve seal B to cause the vacuum break.

  That is, when the compressed fluid is supplied to the switching control supply port 12, the compressed fluid is supplied to the cylinder chamber 10 through the switching control path 22, and the force of the compressed fluid applied to the cylinder chamber becomes greater than the repulsive force of the spring A8, and the piston B18 is moved. The valve seat C5 and the valve seal A6 slide at the same time as the piston B18 to create a gap between the valve seal A6 and the cylinder A7, thereby establishing a vacuum path that connects the vacuum path 20 and the suction port 3. Then, the object to be adsorbed is vacuum-adsorbed to the adsorbing port 3 (see FIG. 3, vacuum path by solid line and broken line at the time of adsorbing). When the supply of compressed fluid to the switching control supply port 12 is stopped, the force applied to the cylinder chamber disappears and the spring The piston B18 is pushed back by the force of A8, and at the same time, the valve seal A6 is pressed against the cylinder A7 to close the vacuum path. Further, the force of the positive pressure fluid for vacuum break supplied from the vacuum break supply port 13 overcomes the force of the elastic body B21 to push (release) the valve seal B19 to cause the positive pressure fluid to flow, thereby opening the valve seat C hole. 4, a positive pressure fluid is supplied to the suction port 3 to break the vacuum, the supply of the positive pressure fluid to the vacuum break supply port 13 is stopped, and the valve seal B 19 is always pressed against the break passage B 17. Therefore, the vacuum break is stopped and the vacuum leakage at the time of adsorption is prevented.

  In such a suction nozzle device according to the present invention, a vacuum is constantly supplied to the vacuum path, and the object to be adsorbed can be adsorbed to the suction port at a high speed by the operation of the piston B by the compressed fluid. By supplying the vacuum breaking supply port to the suction port, positive pressure fluid for vacuum breaking can be supplied to the suction port to release the object to be adsorbed from the adsorption port at a high speed. The response is fast, small and light.

  The suction nozzle device according to the present invention is not limited to the description items of the following embodiments, but is for limiting the shape, scale, position, etc., for ease of explanation in the drawings. Not.

Example 1
An embodiment of the suction nozzle device according to the present invention will be described. The suction nozzle device 1 according to the present invention includes a substantially cylindrical nozzle head 2 made of aluminum that penetrates the hole of the suction port 3 (the outer diameter is φ15 mm and an M6 screw for attaching a suction pad to the tip is cut off. Is fitted in a cylindrical mounting portion of an aluminum cylinder A7 (20 * 25 mm and 40 mm long prismatic shape), and the cylinder A7 has a fluid path switching device inside. In addition, an aluminum supply unit 11 having a switching control supply port 12, a vacuum breaking supply port 13, a breaking path A14, and a switching control path 22 is connected to the cylinder A7 at the opposite end of the cylinder A7 from the nozzle head 2. It is mated. (See Figure 1)

  An example of the pipe connection of the suction nozzle device (see FIG. 2) is that the vacuum supply port 15 of the suction nozzle device 1 is piped and connected to an ejector-type vacuum generator (vacuum source 25). The supply port 13 is tubed and connected to a vacuum break control solenoid valve 24, the vacuum break control solenoid valve is connected to a positive pressure fluid source, and the switching control supply port 12 is tubed to provide a vacuum switching control solenoid. The vacuum switching control switching valve connected to the valve 23 is connected to the compressed fluid source.

  The switching device inside the cylinder A7 includes a mechanism for conducting and blocking the vacuum path 20 and the suction port 3 through the valve seal A6, and the vacuum breaking supply port 13 from the vacuum supply port 15 that is always supplied. It consists of a mechanism for connecting and blocking the positive pressure fluid from the breakage path A14, the breakage path B17 and the suction port 3 with a valve seal B19.

  The switching device for the vacuum path is a polyamide resin piston B18 (the maximum part diameter is 12 mm) that slides inside the cylinder A with the air-shielded sliding packing A9, and moves to the supply unit 11 side of the piston B18 during operation. A switching control supply port 12 to which a compressed fluid is supplied and a cylinder chamber 10 that communicates with the switching control path 22 are provided, and a valve seat C hole 4 is provided at a substantially central portion at the end opposite to the cylinder chamber 10 of the piston B. The valve seat C5 is fitted to the piston B18, a valve seal A6 made of an NBR O-ring is formed on the contact surface of the valve seat C5 and the cylinder A7, and an elastic body A8 made of a spring between the cylinder A7 and the piston B18. As a result, the piston B is pressed against the supply unit 11 side, and the valve seat C5 and the cylinder A7 are brought into contact with each other (see FIG. 1). Interrupting the continuity of the suction port 3. When compressed fluid is supplied to the switching control supply port 12, the compressed fluid is supplied to the cylinder chamber 10 through the switching control path 22, the cylinder force of the compressed fluid exceeds the repulsive force of the spring A8, slides on the piston B18, and the valve seat. A clearance is created in the valve seal A6 between C5 and the cylinder A7 to release the conduction between the vacuum path 20 and the suction port 3, and the object to be adsorbed is vacuum-sucked to the suction port 3 (see FIG. 3, solid line and broken line during suction). When the supply of the compressed fluid is stopped, the piston B18 is pushed back by the restoring force of the elastic body A8 and the vacuum path is closed by the valve seal A6 and the cylinder A7.

  Inside the piston B18 is formed a part that is shielded and slid by the supply unit 11 and the sliding packing B16, and a breaking path B17 that is electrically connected to the breaking path A14, and a rubber valve seal that opens and closes the breaking path B17. B19, the valve seal B19 is pressed against the breaking path B17 by the spring elastic body B21 to close the breaking path (see FIG. 1), and the breaking path is opened by the positive pressure fluid supplied to the vacuum breaking supply port 13 Is pushed through the breaking path A14 and the breaking path B17 to open the valve seal B19 against the spring force of the elastic body B21, and the vacuum breaking fluid is supplied to the suction port 3 through the valve seat C hole 4. When the object to be adsorbed is released (see the arrow in FIG. 4, the path of the positive pressure fluid by the solid line of the vacuum break) and the supply of the positive pressure fluid is stopped, the valve seal B19 is moved to the break path B17 by the elastic body B21. Having a switching device for closing the fracture path is contact.

  When the compressed fluid switched by the external vacuum switching control electromagnetic valve 23 is supplied to or not supplied to the switching control supply port 12, the piston B18 slides due to the spring force and fluid pressure of the elastic body A8, and the valve seat. The C5 valve seal A6 comes into contact with and opens the cylinder A7, the vacuum path is opened and closed, and the object to be adsorbed is released from the suction port 3. When the object to be adsorbed is in close contact with the suction port 3, the piston B18 pushed back by the elastic body A8 is stopped by the valve seal A6 and the cylinder A7 even if the supply of the positive pressure fluid to the switching control supply port 12 is stopped. In order to close the vacuum path, the inside of the suction port 3 is in a negative pressure state, and the state in which the non-adsorbed substance is adsorbed is continued. In order to eliminate this residual continuous adsorption state, the vacuum break control solenoid valve 24 is switched to supply a vacuum positive pressure fluid to the vacuum break supply port 13 to actuate the valve seal B19, thereby opening the valve seat C hole 4 By supplying the fluid to the suction port 3 via the negative pressure state, the negative pressure state is quickly eliminated, and the object to be adsorbed is opened and detached from the nozzle head 2.

  The vacuum state from the external vacuum source is constantly supplied to the vicinity of the vacuum supply port 15, the vacuum path 20, and the valve seal A6, and the adsorption of the object to be adsorbed to the adsorption port 3 at a high speed by opening and closing the valve seal A6. Opening can be performed. The suction speed in the method according to the present invention is higher than that in the method of opening and closing the vacuum source with an external solenoid valve or the like. This is because the speed at which the compressed fluid is supplied to the path to fill the path is faster than the speed at which the path is evacuated to vacuum.

  The suction nozzle according to such an embodiment has a switching operation at a higher speed because it is performed by opening / closing the compressed fluid outside than the suction / release speed of the object to be adsorbed by opening / closing outside the vacuum path. Can do.

  The suction nozzle device according to the present invention incorporates a vacuum switching mechanism using a valve seal A and a destruction switching mechanism using a valve seal B inside, and is a small-sized device that speeds up the operation of adsorbing and releasing the object to be adsorbed and the response. Lightweight and useful.

It is a figure which shows the state at the time of stationary of one embodiment of the suction nozzle apparatus which concerns on this invention. It is a figure which shows the piping of the external connection of one embodiment of the suction nozzle apparatus which concerns on this invention. It is a figure which shows the state at the time of adsorption | suction operation | movement of one embodiment of the adsorption nozzle apparatus which concerns on this invention. It is a figure which shows the state at the time of the vacuum breaking operation | movement of one embodiment of the suction nozzle apparatus which concerns on this invention. It is a figure which shows the other aspect of the suction nozzle apparatus which concerns on this invention.

Explanation of symbols

1 Adsorption nozzle device 2 Nozzle head 3 Adsorption port 4 Valve seat C hole 5 Valve seat C
6 Valve seal A
7 Cylinder A
8 Elastic body A
9 Sliding packing A
10 Cylinder chamber 11 Supply unit 12 Supply port for switching control 13 Supply port for vacuum break 14 Break path A
15 Vacuum supply port 16 Sliding packing B
17 Destruction Path B
18 Piston B
19 Valve seal B
20 Vacuum path 21 Elastic body B
22 Switching control path 23 Vacuum switching control solenoid valve 24 Vacuum break control solenoid valve 25 Vacuum source 26 Suction pad

Claims (3)

 In the suction nozzle to be sucked and transported, a suction port, a switching control supply port, a vacuum supply port, and a vacuum break supply port are formed in the outer peripheral portion of the suction nozzle device, and the vacuum path and / or breakage path is connected and closed. A suction nozzle device, characterized in that a switching device for switching between the two is formed inside the suction nozzle device.   The switching device for switching between conduction and closing of the vacuum path is a piston B that reciprocally slides inside the cylinder A by the compressed fluid and the elastic body A from the switching control supply port, and the vacuum path and adsorption by the sliding of the piston B 2. The suction nozzle device according to claim 1, comprising a valve seal A for switching between opening and closing of the mouth.   The switching device for switching between conduction and closing of the breaking path comprises a valve seal B that opens and closes contact with the piston B by a positive pressure fluid from the vacuum breaking supply port and switches between conduction and closing of the breaking path and the suction port. The suction nozzle device according to claim 1, wherein the suction nozzle device is characterized.

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