JPS62216686A - Automatic measuring and classifying apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field 1 The present invention relates to electrical components such as semiconductor devices, for example.

This invention relates to an automatic measuring and sorting device that automatically sorts objects to be sorted, such as mechanical parts, containers, foods, etc., into accumulation positions determined by property based on properties measured during transportation.

[Prior Art] Conventionally, an automatic measuring and sorting device includes a conveyance device that conveys the objects to be sorted fed by a feeder at a required conveyance interval opened by a WIi feed gate device, and a conveyance device that conveys the objects to be sorted fed by a feeder at a required conveyance interval made by a WIi feed gate device, and a A device that is equipped with a measuring device that measures the properties of sorted items, a sorting device that connects a conveyance device to one of the stacking positions downstream of the measuring device, and a sorting positioning device that switches the connection and stacking position of the sorting device. Are known.

In the above-mentioned conventional device, the sorting device is switched by the sorting positioning device according to the measurement results of the measuring device, and the objects to be sorted are guided to the accumulation position determined according to their properties via the sorting device. be.

[Problems to be Solved by the Invention] However, in the conventional device, when the sorting device is not directed to the correct collection position due to malfunction,
Unable to detect this, a sorting error will occur. In addition, even if the sorting device is switched correctly, the first item to be sorted may be caught in the sorting device, pushed by the next item, and sent to the wrong stacking position along with the next item. Sorting errors also occur due to misalignment.

The above-mentioned sorting errors are a cause of lowering product reliability.

[Means for solving the problems] The means taken to solve the above problems will be explained with reference to FIG. 1, which corresponds to an embodiment of the present invention.2 The present invention provides: a conveying device 2 for conveying l, and (2) J
[Measurement devices 3 and 2 that measure the properties of the objects to be sorted 1 to be transported during the IT transport device 2. (3) On the downstream side of the measurement device 3, the transport device 2 is moved to one of the accumulation positions 4a, 4b or Sorting device 5 connected to 4c
(4) Accumulation position 4a according to the measurement result by the measuring device 3
, 4b or 4C, a sorting positioning device 6 that switches the connection position of the sorting device 5; (5) an accumulation position 4a to which the sorting device 5 is connected;
4b or 4c; (8) passing sensors 8a, 8b, 8c provided immediately before each accumulation position 4a, 4b, 4c; (7) measuring device 3; Accumulation position 4a indicated by the results.

4b or 4C, a collection position 4a, 4b or 4C indicated by the sorting position confirmation device 7, and a collection position 4a indicated by the passage sensor 8a, 8b or 8C.

Sorting of the next object to be sorted l is not performed until the three items 4b or 4c match.

This is a technical measure that has been taken.

[Function] When the sorting device 5 malfunctions, the correct stacking position 4a
, 4b or 4c, the accumulation position 4a, 4b or 4c indicated by the measuring device 3 and the accumulation position 4a, 4b or 4c indicated by the sorting position confirmation device 7 will not match,
Sorting will be canceled. Therefore, it is possible to prevent mis-allocation due to such malfunctions.

On the other hand, when the preceding object 1 to be sorted is caught in the sorting device 5, none of the 1-pass sensors 8a, 8b, and 8c detect the passage of the object 1 to be sorted. Showing concentration position 1i4a, 4b or 4
Even if c matches, the distribution is canceled. Therefore, sorting errors due to the objects 1 to be sorted being caught are also prevented. Furthermore, if the objects 1 to be sorted are sent to the wrong accumulation position 4a, 4b or 4c, the measuring device 3 and the sorting position confirmation device 2
Accumulation position 4a, 4b or 4c indicated by I7 and accumulation position 4a, 4b or 4 indicated by passing sensor 8a, 8b or 8c
If c does not match, the distribution is canceled, so this can be detected.

[Example] As shown in FIG.
are connected, and the objects to be sorted l supplied from the feeder 9 are transported by the transport device 2.

The object to be sorted 1 is a semiconductor element (
For example, transistors, Hall elements, Hall ICs, etc.)
It has an element head 1a and a lead lb protruding from the element head 1a.

As shown in FIG. 3, the conveying device 2 is an inclined chute in which two plates are arranged in parallel at an appropriate interval and are inclined from the upstream side to the downstream side. The objects 1 to be sorted are conveyed by sliding down the slope along the slope with the leads 1b inserted between two plates of an inclined chute, which is the conveying device 2, and with the element heads 1a suspended on the inclined chute. It is something that will be done.

A transport gate device 10 located upstream of the transport device 2
is as shown in FIGS. 3 and 4, and has a first stopper 12 and a second stopper 13 that are alternately raised and lowered by an air actuator 11. The first stopper 12 comes into contact with the front surface of the first object to be sorted 1 when descending, and the second stopper 13 contacts the front surface of the first object to be sorted 1 when descending.
! This is to press down the f-th item to be sorted l from above. When the second object 1 to be sorted is held down by the second stop/par 13 and the first stopper 12 is raised, only the first object 1 to be sorted can be sent out.Then, the first stopper 12 is lowered. By raising the second stopper 13 and repeating the same operation at a predetermined timing, the objects to be sorted l are sent out one by one at a predetermined interval.

The measuring device 3 located in the middle of the conveying device 2 has a fifth
A guide block 14 fixed along the conveying device 2 and a guide block 14 as shown in FIGS.
A stopper block 15 that is moved up and down immediately downstream of the
It has a measuring block 18 that is moved forward and backward toward the conveying device 2 from the side thereof. This measuring device 3 lowers the stopper block 15 to stop the conveyed objects l to come into contact with the stopper block 15, and then moves the measuring block 16 forward and uses the positioning bin 17 to move the objects to be sorted. 1 is pressed against the guide block 14 to position it, and the contactor 18 is brought into contact with the lead lb of the semiconductor element, which is the object to be sorted 1, through the notch 18 of the conveying device 2 to measure its electrical characteristics. It is something. After measurement, the measuring block 16 moves back and the stopper block 15
also rises and sends out the object 1 to be sorted.

The objects 1 to be sorted whose properties (in this embodiment, electrical characteristics) have been measured by the measuring device 3 are temporarily put on standby in a standby device 20 located downstream of the conveyance device 2, if necessary.

A sorting device 5 is connected to the downstream end of the conveying device 2, which in this embodiment is a rotary chute. This sorting device 5 connects the conveying device 2 and one of the accumulation positions 4a, 4b, or 4c, and guides the conveyed objects l to be sorted for the measurement method to the accumulation position 4a, 4b, or 4c. .

The sorting device 5 is rotated by the sorting and positioning device 6, so that the sorting device 5 can select any one of the accumulation positions 4a, 4.
It can be switched whether it is connected to b or 4c. The distribution positioning device 6 in this embodiment is a step motor.

The measuring device 3 sends necessary pulses to the sorting and positioning device 6, which is a step motor, depending on the measurement result. As a result, the sorting and positioning device 6 rotates the sorting device 5 to the accumulation position 4a, 4b, or 4c to which the objects 1 having the properties measured by the measuring device 3 are to be delivered.
to the conveying device via the sorting device 5! Connect 12.

The distribution position confirmation device 7 includes a slit plate 21 attached to the drive shaft of a step motor, which is the distribution positioning device 6, and a slit sensor 22 provided around the slit plate 21.
It is composed of a, 22b, and 22c. Although the slit plate 21 has a slit on one periphery, the slit sensors 22a, 22b, and 22c detect when the slit moves as the slit plate 21 rotates.
It detects it. The slit plate 21 and the slit sensors 22a, 22b, and 22c are such that when the slit sensor 22a at the left end in the figure detects a slit in the slit plate 21, the sorting device 5 is connected to the accumulation position 4a at the left end in the figure. Slit sensor 22b
and 22c have a similar relationship with the accumulation positions 4b and 4C, respectively. When the stacking position 4a, 4b, or 4c indicated by the measurement result of the measuring device 3 matches the stacking position 4a, 4b, or 4c indicated by the sorting position confirmation device 7, the standby device 20 is opened and the objects 1 to be sorted are It will be sent to the sorting device 5, and if there is a mismatch, the standby device 20 will remain closed.

Passage sensors 8a, 8b, 8c are provided immediately in front of each accumulation position 4a, 4b, 4c, respectively. The passage sensors 8a, 8b, and 8c are used to confirm the passage of the object to be sorted 1, and are, for example, a combination of an infrared projector and its detector. Then, even though the standby device 20 is opened and the object to be sorted 1 is sent to the sorting device 5, the passage sensor 8a, 8b, or 8c that should detect the passage of the object to be sorted 1 does not detect the passage. (
If none of the passing sensors detect passing, or if a different passing sensor detects passing), then the standby device 2
0 remains closed and interrupts distribution.

In this embodiment, semiconductor elements are used as the objects to be sorted 1, but in addition to such electrical parts, the apparatus can also be used for sorting containers, mechanical parts, foods, etc. The measuring device 3 may be selected depending on the type of the objects 1 to be sorted, and the properties to be measured may be size, shape, composition, etc.

Further, the accumulation positions 4a, 4b, 4c may have two or more layers depending on the number of sorting categories, and accordingly, the passing sensors 8a, 8b, 8c and the slit sensor 22a
, 22b, 22c, etc. may also be increased or decreased.

[Effects of the Invention] According to the present invention, it is possible to prevent sorting errors and to detect the occurrence of sorting errors, so it is possible to prevent a decrease in product reliability due to sorting errors.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of one embodiment of the present invention, Fig. 2 is a perspective view showing an example of the objects to be sorted, Fig. 3 is an enlarged view of the vicinity of the conveyance gate device, and Fig. 4 is the - IV sectional view, FIG. 5 is an enlarged view of the vicinity of the measuring device, and FIG. 6 is a partially cross-sectional view in the direction ■--■ of FIG. 5. 1: Item to be sorted, 1a: Element head, 1b = Lead, 2: Conveying device, 3: Measuring device, 4a to 4
C: Accumulation position, 5: Sorting device. 6: Distribution positioning device, 7: Distribution position confirmation device, 8a to 8C: Passage sensor, 9: Feeder 210: Conveyance gate device. 11: Air actuator. 12: first stopper, 13: second stopper, 14:
Guide block, 15: Stopper block. 16: Measuring block, 17: Positioning bin, 18: vc
Tensor, 19: Notch, 20: Standby device, 21 Nislit plate, 22a to 22c Nisslit sensor.

Claims (1)

[Scope of Claims] 1) A conveyance device that conveys objects to be sorted; a measuring device that measures the properties of the objects to be sorted during the conveyance device; A sorting device that connects to the accumulation position, a sorting positioning device that switches the connection position of the sorting device to the accumulation position according to the measurement result by the measuring device, and a sorting position confirmation that confirms the accumulation position to which the sorting device is connected. It has a device and a passing sensor installed just before each accumulation position, and the accumulation position indicated by the measurement result by the measuring device, the accumulation position indicated by the sorting position confirmation device, and the accumulation position indicated by the passing sensor is An automatic measuring and sorting device characterized in that the next item to be sorted is not sorted until they match.