JPH044165Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is used to inspect minute parts such as small screws, measure their external dimensions, and classify them into good and defective parts. This invention relates to an inspection machine for minute parts that automatically performs work, and is characterized by being constructed so that the inspection work can be accomplished extremely quickly.

(Prior Art) Conventionally, inspection of minute parts such as screws has relied on a sampling inspection method. The measurement usually relies on a measuring instrument such as a caliper or a magnifying glass.

(Problem to be solved by the invention) In recent years, work such as screw tightening has come to be carried out unmanned by the adoption of automatic machines.
In this case, if the screw dimensions are not standard, the machine will stop each time. Therefore, the accuracy of the screw dimensions is extremely important, and it is necessary to use a full-item inspection method instead of the above-mentioned sampling inspection method. However, in the work style described above where inspection relies on measuring instruments such as calipers or magnifying glasses,
It takes too much time and is completely inappropriate for a full-item inspection system.

The present invention is characterized in that it attempts to solve the above-mentioned problems.

(Means for Solving Problems) The present invention provides a passage 2 for dropping proper parts and a passage 3 for dropping unsuitable parts below the guide passage 1 for inspection of minute parts, and both dropping passages 2. , 3 is provided, and a lamp 7 and a light signal detection camera 8 are installed at approximately the center of the inspection guide path 1 so as to face each other across the path 1. A controller 9 is connected to the camera 8 to determine whether the data signal sent through the camera 8 is appropriate or inappropriate and to cause the sorting gate 4 to perform a predetermined operation. A first roll 5 is installed above the passage 1 and rotates so as to receive the microcomponent A supplied into the passage 1 at its periphery and then send it downward. A second roll 6 is installed which rotates intermittently so as to once receive the minute part A at its periphery and then send it downward. This relates to an inspection machine for minute parts characterized in that the speed is slower and lower than the intermittent circumferential speed of the second roll 6.

(Function) In the state shown in FIG.
It is received by the roll 5 and the first
Based on the rotation of the roll 5, the product falls through the inspection guide path 1. The falling micro parts A
This time, it is received by the second roll 6 which rotates intermittently, and after stopping once, it is dropped again.

At this time, the microcomponent A that has been temporarily stopped is
At this stage, the lamp 7 and the optical signal detection camera 8
Its external dimensions are read through the , which is converted into an electrical signal and sent to the controller 9.

The electrical signal sent is compared with the standard data set in advance in the controller 9 to determine whether it is suitable or not, and then the sorting gate 4 is caused to perform a predetermined operation based on the determined output. Become.

Therefore, the minute parts A once stopped via the second roll 6 are determined to be suitable or unsuitable, and based on the operation of the sorting gate 4, are placed in the proper parts falling passage 2 or the unsuitable parts falling passage. It will be guided to one of the passageways 3.

(Example) An example of the configuration of the present invention shown in the drawings will be described in detail as follows.

In FIG. 1, reference numeral 1 denotes a guide passage for inspecting minute parts, 2 a passage for dropping proper parts, and 3 a passage for dropping unsuitable parts which are connected so as to branch from the upper end of the passage 2 for dropping proper parts. , both passages 2 and 3 are connected to the lower end of the guide passage 1 for inspecting minute parts.

Reference numeral 4 denotes a sorting gate installed at the starting end of both passages 2 and 3, which allows inspected minute parts falling from the inspection guide passage 1 to be transferred to a passage for proper parts dropping according to whether they are good or bad. This is for sorting and guiding to either the 2nd side or the 3rd side of the path for dropping inappropriate parts. Further, the sorting gate 4 is configured to be operated via an electromagnetic solenoid, and the operation is configured to be automatically performed based on a signal sent from a controller 9, which will be described later. be.

Reference numeral 5 denotes a first roll installed near the upper end of the inspection guide passage 1, and the peripheral edge of the first roll 5 faces the inside of the inspection guide passage 1. It is configured so that the supplied microcomponent A is rotated so as to be sent downward after being received by the peripheral edge.

Reference numeral 6 denotes a second roll installed below the first roll 5 (in FIG. 1, the second roll 6
The second roll 6 is attached in a direction perpendicular to the first roll 5), and the second roll 6 has its periphery facing the inside of the inspection guide passage 1, and the second roll 6 is attached in a direction perpendicular to the first roll 5. It is configured such that the minute parts A being fed are rotated intermittently such that they are temporarily stopped at the periphery and then sent downward. M is the second
This is a motor for rotating the roll 6.

Regarding the rotation of the first roll 5 and the second roll 6, generally speaking, the circumferential speed of the first roll 5 is slower than the feeding speed of the micro parts A to the inspection guide path 1. In addition, it is desirable that the speed is lower than the intermittent circumferential speed of the second roll 6, preferably about 1/3. This is because, in order to perform the inspection as described below at the position of the second roll 5, it is necessary to feed the minute parts A one after another to the position of the second roll 6 at predetermined intervals.

Reference numeral 7 denotes a lamp installed at the position of the second roll 6, that is, the position where the minute component A is stopped due to intermittent rotation via the second roll 6; A camera for detecting an optical signal installed opposite to the front position of the lamp 7, the camera 8 is for reading the external dimensions of the minute component A in front of the camera 8 and converting this into an electrical signal. It is.

Reference numeral 9 denotes a controller which reads the read signal regarding the minute parts sent through the camera 8 and compares it with preset standard data to determine whether it is suitable or not. It is for. The discrimination output signal of the controller 9 is
As described above, the signal is sent to the electromagnetic solenoid of the sorting gate 4, and the solenoid is operated to cause the gate 4 to carry out a predetermined sorting operation.

The controller 9 is connected to the motor M for rotating the second roll 6 described above, so that the feeding of the micro parts A and the discrimination operation of the controller 9 are synchronized.

FIG. 2 shows another embodiment of the present invention, in which the guide passage 1 for inspecting minute parts is configured not in a vertical configuration as shown in FIG. 1 but in an inclined configuration. The present invention may be implemented in such a form.

(Effects of the invention) The present invention is equipped with a first roll 5 that rotates to receive the micro parts A supplied into the passage 1 at its periphery and send them downwards at the upper side of the inspection guide passage 1. At the same time, a second roll 6 is installed in a position in front of the optical signal detection camera 8 that rotates intermittently so as to once receive the micropart A at its periphery and then send it downward, and furthermore, the peripheral speed of the first roll 5 is increased. is configured to be slower than the supply speed of the minute parts A to the inspection guide path 1 and slower than the intermittent circumferential speed of the second roll 6.

Since the present invention adopts the above configuration, when inspecting minute parts such as small screws,
It will now be possible to provide an inspection machine for minute parts that can automatically and extremely quickly perform the work of measuring the outer dimensions of the parts, distinguishing them into good and defective parts, and sorting them.

That is, based on the above configuration, the minute parts continuously supplied into the inspection guide path 1 are regulated so that they fall at a predetermined interval based on the rotation of the first roll 5. Next, the microcomponent is received via the second roll 6, and
Based on the intermittent rotation, a fall regulation has been established in which the machine is stopped once and then dropped.
Therefore, it is permitted to take a predetermined measuring means such as the optical signal detection camera 8 based on the temporary stop of the microcomponent A.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
The figure is an explanatory system diagram of the present invention, and FIG. 2 is a sectional view of essential parts showing another embodiment of the present invention. 1... Guide path for micro parts inspection, 2... Passage for dropping proper parts, 3... Passage for dropping incorrect parts, 4
... Sorting gate, 5 ... First roll, 6 ... Second roll, 7 ... Lamp, 8 ... Optical signal detection camera, 9 ... Control machine.

Claims (1)

[Scope of utility model registration request] Below the guide path 1 for micro parts inspection, a path 2 for dropping proper parts and a path 3 for dropping unsuitable parts are provided in series, and a sorting gate 4 for switching between both the dropping paths 2 and 3 is provided. Guide passage 1
A lamp 7 and a camera 8 for detecting optical signals are installed facing each other across the passage 1 at approximately the center of the lamp 7, and a data signal sent through the camera 8 is discriminated as appropriate or inappropriate. A controller 9 for performing predetermined operations of the sorting gate 4 is connected to the camera 8, and a micro parts A to be supplied into the inspection guide passage 1 is placed near the upper side of the inspection guide passage 1.
A first roll 5 is installed which rotates so as to receive the small part A at its periphery and then send it downward, and a first roll 5 is installed which rotates so as to send it downward after receiving it at its periphery. A rotating second roll 6 is installed, and the peripheral speed of the first roll 5 is set to be slower than the feeding speed of the micro parts A to the inspection guide path 1 and lower than the intermittent peripheral speed of the second roll 6. An inspection machine for micro parts, characterized by being configured to do so.