JP2001048348A - Suction nozzle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction nozzle device that can regulate conveying speed depending on objects through such a change in ejecting speed as involves no drop in suction force, and can thus prevent damage to objects and move them to the next step smoothly. SOLUTION: A suction nozzle device 1 spouts compressed air in the direction of an ejection opening 2B from an injection nozzle 3 formed in that internal surface of a suction nozzle 2 which is nearer to a suction opening 2A to thus generate negative pressure about the suction opening 2A so that objects are introduced by suction into the suction opening 2A and are ejected from the ejection opening 2B. The suction nozzle device 1 includes a speed regulation opening 5 formed in the internal surface of the auction nozzle 2 downstream of the compressed air spouting position, a filter 6 or micro-slit disposed over the speed regulation opening 5, and a negative pressure generating part 7 connected to the speed regulation opening 5 to generate variable negative pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction nozzle device capable of preventing an object from being damaged and smoothly moving to the next process.

[0002]

2. Description of the Related Art Conventionally, an ejector or suction nozzle (hereinafter, collectively referred to as a vacuum) for generating a vacuum using compressed air, sucking an object from an inlet, discharging an object from an outlet, and transporting the object. The suction nozzle device is, for example, as shown in FIG.

A conventional suction nozzle device 4 shown in FIG.
0 is the compressed air supplied from the compressed air supply source 41,
The pressure is adjusted to an arbitrary pressure by the pressure regulator 42 and the pressure gauge 43, and the pressure is supplied into the suction nozzle 45 through the compressed air supply port 44, and the supplied compressed air is formed on the inner peripheral surface of the suction nozzle 45. The injection nozzle 46 injects the object in the conveying direction of the object, and the injection nozzle 46 generates a negative pressure in the opposite conveying direction by the injection of the compressed air, so that the suction port 4
7, the object is sucked in, and the object is discharged from the outlet 48.

[0004]

However, in recent years,
With the reduction in size and weight of electronic devices, electronic components used in electronic devices have also been reduced in size and weight. For example, electronic components called extremely small chip components may be used.

[0005] However, the conventional suction nozzle device operates while maintaining a constant suction force and adjusts the transfer speed when it is used in the process of manufacturing, inspecting, and assembling the above-mentioned micro chip components. When ejecting micro chip components from a conventional suction nozzle device, the small and light micro chips may violently collide with the structure and break or bounce off, deteriorating the quality of the next process. There was a problem that it was not possible to move smoothly.

The present invention has been made to solve the above-mentioned problem, and can adjust the conveying speed according to the object by changing the discharging speed without reducing the suction force. It is an object of the present invention to provide a suction nozzle device capable of preventing the operation from being performed and smoothly moving to the next process.

[0007]

In order to achieve the above object, a suction nozzle device according to the present invention has a speed adjusting port formed on an inner surface of a suction nozzle on a downstream side of a compressed air injection position, and the speed adjusting port is provided with a speed adjusting port. A filter or a minute slit is provided so as to cover the mouth, and a negative pressure generating unit is connected to the speed adjusting port, and the negative pressure generating unit variably generates a negative pressure around the speed adjusting port. . By doing so, it is possible to change only the speed of discharging the object without reducing the suction force around the suction port.

[0008]

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speed adjusting port formed on an inner surface of a suction nozzle downstream of a compressed air injection position, a filter or a minute slit provided to cover the speed adjusting port, and a speed adjusting port. A negative pressure generating unit connected to the mouth and variably generating a negative pressure.

According to the suction nozzle device of the present invention having the above-described structure, compressed air is injected from the inner surface of the suction nozzle to the discharge port toward the discharge port to generate a negative pressure around the suction port. When suctioning an object from the suction port and discharging the object suctioned from the suction port from the discharge port, a negative pressure, that is, a suction force, is applied around the speed adjustment port on the downstream side of the compressed air injection position in the suction nozzle. By generating the negative pressure by the negative pressure generating unit, the discharged object can be decelerated.

In the suction nozzle device of the present invention, the filter or the minute slit is provided so as to cover the speed adjusting port. This is to prevent an extremely large negative pressure from being applied and the object to be sucked into the speed adjustment port. Preferably, the filter or the minute slit covers the speed adjustment port,
Unnecessary collision of the object in the suction nozzle can be prevented by providing the surface of the suction nozzle flush with the inner surface of the suction nozzle so that no step is formed in the flow path through which the object passes.

Although it is possible to decelerate the discharged object by, for example, reducing the injection amount of the compressed air, the suction force around the suction port is reduced by doing so,
There is a possibility that the transport efficiency may be deteriorated. In other words, what is problematic is the ejection speed when ejecting the object, and if the ejection speed is uniform as in the past, if the object is minute and lightweight, the ejected object is located at the ejection destination Collision with structures and damage, or jumping out of the line,
Proper transport cannot be performed.

Therefore, the suction nozzle device of the present invention variably reduces the discharge speed downstream from the compressed air injection position in the suction nozzle as described above. In this way, even when the suction force is maintained as it is or when the suction force is further increased, only the discharge speed can be variably reduced, so that
Even a minute and lightweight object is not damaged, and stable conveyance can be performed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a suction nozzle device according to the present invention will be described below with reference to FIGS. FIG. 1 shows the configuration of a suction nozzle device according to a first embodiment of the present invention. FIG. 2 shows the configuration of a second embodiment of the suction nozzle device of the present invention. FIG. 3 shows the configuration of a third embodiment of the suction nozzle device of the present invention.

(First Embodiment) A suction nozzle device 1 of the present invention shown in FIG. 1 is configured as follows.
Reference numeral 2 denotes a suction nozzle in which a flow path for sucking an object from the suction port 2A and discharging the object from the discharge port 2B is formed.

3 is provided from the air reservoir 3a provided at a position separated from the inner peripheral surface on the suction port 2A side in the flow path of the suction nozzle 2, from an appropriate position on the inner peripheral surface of the suction nozzle 2. , An injection nozzle for injecting compressed air toward the discharge port 2B side. A part of the air reservoir 3a communicates with the outside of the suction nozzle 2, and a compressed air supply port 3b is formed at the outer edge of the suction nozzle 2 communicating with the air reservoir 3a.

Reference numeral 4 denotes a compressed air injection section which is connected to the compressed air supply port 3b and injects compressed air from the injection nozzle 3. The compressed air injection unit 4 includes a compressed air supply source 4A for supplying compressed air, an adjuster 4B for adjusting the pressure of the compressed air supplied from the compressed air supply source 4A,
It comprises a pressure gauge 4C for measuring the pressure of the compressed air supplied through the regulator 4B.

Reference numeral 5 denotes a speed adjusting port formed on the inner surface of the suction nozzle 2 on the downstream side of the injection nozzle 3.
A part of the speed adjusting port 5 communicates with the outside of the suction nozzle 2, and a negative pressure introducing port 5 a is formed at an outer edge of the suction nozzle 2 communicating with the speed adjusting port 5. 6
For example, a filter provided so as to cover the speed adjustment port 5 so that an object does not enter the speed adjustment port 5 and to be flush with the flow path surface of the suction nozzle 2 so that the object does not get caught in the speed adjustment port 5 It is.

Reference numeral 7 denotes a negative pressure generator connected to the negative pressure inlet 5a and variably generating a negative pressure. Negative pressure generator 7
Is supplied with compressed air from the above-mentioned compressed air supply source 4A. The regulator 7A adjusts the pressure of the supplied compressed air, and measures the pressure of the compressed air supplied through the regulator 7A. It comprises a pressure gauge 7B and a negative pressure generator 7C which generates a negative pressure, that is, a suction force by injecting compressed air passing through the pressure gauge 7B, and which is in principle the same as a conventional suction nozzle.

The suction nozzle device 1 of the first embodiment having the above-described structure operates as follows. Compressed air supply source 4A
, A regulator 4B, a pressure gauge 4C, a compressed air supply port 3b,
When compressed air is supplied to the injection nozzle 3 through the air reservoir 3c and the compressed air is injected from the injection nozzle 3 toward the discharge port 2B, a negative pressure is generated around the suction port 2A. Is sucked from the suction port 2A. And the object is
After being sucked to the position of the injection nozzle 3 in the suction nozzle 2, the object is sent to the outlet 2B by the compressed air injected from the injection nozzle 3, and the object is discharged from the outlet 2B.

At this time, in order to reduce the discharge speed of the object discharged from the discharge port 2B, the negative pressure generating unit 7 measures the pressure of the compressed air supplied from the compressed air supply source 4A by referring to the pressure gauge 7B. It is adjusted by the adjuster 7A while adjusting. The adjusted compressed air is supplied to the negative pressure generator 7C, and the negative pressure generator 7C generates a negative pressure.

Then, due to the negative pressure generated by the negative pressure generator 7C, a force for sucking an object acts around the speed adjusting port 5 through the negative pressure introducing port 5a, and therefore the position of the injection nozzle 3 in the suction nozzle 2 is reduced. Is decelerated at the position of the speed adjustment port 5 and discharged from the discharge port 2B. Further, even if the object decelerated in this way comes into contact with the inner peripheral surface of the suction nozzle 2, the filter 6 is provided, so that the object does not get caught on the speed adjustment port 5 or unnecessarily collide.

(Second Embodiment) In the suction nozzle device 11 of the present invention shown in FIG. 2, the negative pressure generating section 7 is provided outside the suction nozzle 2 in the suction nozzle device 1 shown in FIG. In the second embodiment, the negative pressure generator 7 is provided on the suction nozzle 2. Hereinafter, only the configuration different from the suction nozzle device 1 shown in FIG. 1 will be described, and the same configuration will be denoted by the same reference numeral and description thereof will be omitted.

The negative pressure generating section 17 is provided in the suction nozzle 2 and introduces compressed air to the negative pressure generating section 17 from the middle of the compressed air flow path from the compressed air supply port 3b to the air reservoir 3a. A channel 17a is formed. Channel 17
a is a connection part 17b of the negative pressure generator 17C in the middle thereof.
The opening 17c is formed in the overlapping portion of the flow path 17a and the connecting portion 17b, and a needle as the adjuster 17A is inserted into the opening 17c.

Suction nozzle device 11 of second embodiment
By operating the adjuster 17A to increase the opening amount of the opening 17c, the flow rate of the compressed air flowing to the negative pressure generator 17C increases, so that the negative pressure generated around the speed adjusting port 5 increases. The discharge speed of the object can be reduced.

(Third Embodiment) A suction nozzle device 11 of the present invention shown in FIG. 3 is connected to a speed adjusting port 5 from a position of an injection nozzle 3 in a suction nozzle 2 of the suction nozzle device 1 shown in FIG. Insulating grooves 10b
Is formed. Hereinafter, only the configuration different from the suction nozzle device 1 shown in FIG. 1 will be described, and the same configuration will be denoted by the same reference numeral and description thereof will be omitted.

The insulating groove 10 b is provided to prevent the negative pressure generated around the speed adjusting port 5 from affecting the periphery of the injection nozzle 3, and a part of the insulating groove 10 b communicates with the outside of the suction nozzle 2. An opening 10a that is open to the atmosphere is formed at an outer edge of the suction nozzle 2 communicating with the insulating groove 10b.

Suction nozzle device 21 of the third embodiment
The operation of reducing the discharge speed of the object is the same as that in the first embodiment described above, and the compressed air injected from the injection nozzle 3 and the air sucked from the speed adjustment port 5 are supplied to the insulating groove 10b and By forming the opening 10a, it is possible to prevent mutual influence. The configuration of the third embodiment can be applied to the suction nozzle device 11 of the second embodiment.

As described above, the suction nozzle devices 1, 1
1 and 21 are provided with a speed adjusting port 5 at a position downstream of the injection nozzle 3 in the suction nozzle 2.
By providing the negative pressure generating parts 7 and 17 for generating negative pressure around the object, only the discharge speed can be reduced without reducing the suction force of the object, and therefore, a minute and lightweight object is conveyed. In this case, the discharge speed is reduced to prevent the object from being damaged, and stable conveyance can be performed.

It should be noted that the present invention is not limited to the above-described embodiment, and various modifications are possible. For example, in the above-described embodiment, the filter 6 is used. The same operation and effect as described above can be obtained by using.

[0030]

As described above, in the suction nozzle device of the present invention, the speed adjusting port is formed on the inner surface of the suction nozzle on the downstream side of the injection position of the compressed air, and the filter or the fine filter is formed so as to cover the speed adjusting port. A slit is provided and a negative pressure generator that variably generates negative pressure is connected to the speed adjustment port, so the discharge speed can be adjusted without reducing the suction force, and a small and lightweight micro tip as an object When the object is conveyed, it is possible to prevent the object from violently colliding with the structure and being damaged or rebounded, thereby preventing the quality from being impaired and smoothly moving to the next step in the conveyance.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a first embodiment of a suction nozzle device of the present invention.

FIG. 2 is a diagram showing a configuration of a second embodiment of the suction nozzle device of the present invention.

FIG. 3 is a diagram showing a configuration of a suction nozzle device according to a third embodiment of the present invention.

FIG. 4 is a view showing a conventional suction nozzle device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction nozzle device 2 Suction nozzle 2A Suction port 2B Discharge port 3 Injection nozzle 4 Compressed air injection part 5 Speed adjustment port 6 Filter 7 Negative pressure generation part 7C Negative pressure generator 10a Open port 10b Insulation groove 11 Suction nozzle device 17 Negative pressure Generator 17C Negative pressure generator

Claims (1)

[Claims] 1. Injecting compressed air from an inner surface of a suction nozzle to a discharge port toward the discharge port to generate a negative pressure around the suction port, sucking an object from the suction port, and suctioning the object. A suction nozzle device for discharging an object sucked from a mouth from the discharge port, wherein a speed adjustment port formed on an inner surface of the suction nozzle on the downstream side of the injection position of the compressed air, so as to cover the speed adjustment port. A suction nozzle device comprising: a filter or a minute slit provided; and a negative pressure generator connected to the speed adjusting port and variably generating a negative pressure.