JPS6351273B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an automatic sorting device for sorting and sorting electronic parts that require multiple sorting. Electronic components such as variable capacitance diodes need to be classified and sorted according to their capacitance and various characteristics, and therefore an automatic sorting device that can highly classify them is required. As a conventional automatic sorting device of this type capable of multiple classification, electronic components are sequentially supplied from a parts feeder to a chute, and DC
Measure the item and capacity, determine the address (classification location) according to these measured values, and move the lower distributor (chute) horizontally using the XY axis drive to spread the plane.
A method is used in which diodes are dropped into a classification storage section divided in the XY direction (20 x 20) and classified into 400 categories. As described above, the conventional automatic sorting apparatus has the following problems. (1) It is difficult to index up because the classification method uses a cyclical motion that moves addresses along the XY axes. Increasing the number of sections requires a wider installation area. (2) Since the XY axes of the distributor are driven by a pulse motor, if the XY axes or the load balance is disrupted, the device will not operate and may cause misclassification. Furthermore, since the distributor performs a return-to-origin operation, the classification operation takes a lot of time. (3) The shutters and inserters in the classification storage section are prone to wear, which may cause malfunctions in the supply and delivery of diodes, resulting in misclassification. (4) If the diode becomes clogged in the chute or the pulse motor malfunctions, the inability to provide stop feedback may lead to misclassification. (5) Large-scale charging is not possible due to parts feeder supply system. Furthermore, noise generated when the power is turned on and off may cause the inserter or shutter to malfunction. The present invention has been made in order to eliminate the drawbacks of the prior art described above. Therefore, an object of the present invention is to provide an automatic sorting device that is suitable for multiple classifications and can minimize misclassifications. In order to achieve the above object, according to an embodiment of the present invention, there is provided a measuring section for measuring the characteristics of supplied electronic components, and a plurality of shots in one row for classifying the electronic components based on the measurement results of the measuring section. and a plurality of rows of chutes that further classify the electronic components classified by the primary classification portion and move in a direction substantially perpendicular to the row of chutes of the primary classification portion. It has a classification section consisting of a secondary classification section, a plurality of the measurement sections and the primary classification section, and the primary classification section is installed in parallel on the secondary classification section. DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an automatic sorting device for variable capacitance diodes will be described in detail below. 1 and 2 show the overall configuration of an automatic sorting device according to the present invention. Reference numeral 1 designates a magnetic stocker as an electronic component individual supply means for taking out components one by one from a group D of electronic components (diodes) supplied from the outside to the next measuring section. This magnet stocker has two permanent magnets facing each other,
By magnetically attracting the iron leads on both axes of a large number of diodes inserted between them, they are held horizontally and moved laterally, and a circular drum 2 with magnetic chucks arranged around the periphery is rotated to remove one diode. The entire sample is taken out and sent to the measuring section located at the top. The measuring section is provided with several sets, for example, three sets of contacts 3, where the electrodes of the diodes come into contact and the testers 4 and 5 measure the polarity, capacitance, DC characteristics, etc. at the same time. A classification location (address) is determined and stored in the computer's storage device. 6 is a mechanism for extracting the measured diodes, in which the diodes extracted from the circular drum 2 by mechanical means are placed on a conveyor chain 8 through a hopper-like chute 7;
It is sent to the next classification section (c). The primary sorting section is composed of a swinging chute 10 and a row of multiple chute (primary sorting shelves). The diode sent by the conveyance chain 8 passes through a hopper-like chute 9 and enters a swing chute (also called a neck stocker) 10, and the angle of the swing chute is selected by an instruction signal from the storage device, and the diode is Enter the chute of the primary sorting shelf 11 in that direction. This primary classification shelf has 10 categories (A) of chute arranged in one row along the swinging direction of the swinging chute, and the diode is first classified by selecting and entering one of the chute. Ru.
A sensor 12 is provided in each chute of this primary sorting shelf to detect the presence of a diode going in and out, and a secondary sorting section is installed below it via a shutter 13 that opens and closes the bottom of each chute. . The secondary classification section includes a rotary table having a plurality of rows of chute in the circumferential direction corresponding to the rows of chute of the primary classification section, a group of shutters for opening and closing the chute bottom of the rotary table, and a shutter group for opening and closing the chute bottom of the rotary table; It consists of a fixing tape having chute arranged so as to correspond to each chute provided, and a storage part having a storage pin 17 corresponding to each chute is installed under the fixed table. The secondary classification section has 10 divisions in the radial direction of the rotary table corresponding to the 1-row chute of the primary classification section, and 120 divisions along the circumferential direction, and the chute corresponding to 10 x 120 = 1200 classifications in total. The rotation of the table causes each chute to move in a direction perpendicular to the direction of the chute rows of the primary sorting section. After the diodes have been subjected to primary classification in the primary classification section, when the shutter at the target address of the rotary table moves directly below, the shutter opens and the diodes descend, performing secondary classification. When the rotary table and the fixed table reach a predetermined position, the shutter between the rotary table and the fixed table opens, and the diode in the chute of the rotary table reads the target address directly below it through the chute of the fixed table at the corresponding position. are stored in the storage bin 17, and the classification and sorting is completed. A sensor 18 for detecting the presence of a diode is also installed in each chute on the rotary table of the secondary classification section. In the present invention, as shown in the system configuration diagram of FIG. 4, the electronic component supplying means (magnetic stocker) 1a, 1b..., measuring parts 3a, 3b..., and transport parts such as a transport chain, which are the pre-stages of the primary sorting, and primary classification C _a , C _b , C _c ... including swing chute and classification shelf.
A plurality of sets (for example, 4 sets) are arranged together to correspond to one set of secondary classification B. In the figure, 19 is a computer (storage unit), 20 is a control unit, 21 is a tape reader, and 22 is a typewriter. Figure 3 illustrates these classification systems, and the primary classification section C is divided into A divisions (A=10) in the radial direction;
The secondary classification is performed in B divisions (B=120) in the circumferential direction, and the total number of divisions is T=A×B (=1200), and multiple classifications can be processed at once. Primary classification part C is from C _a
Since there are four sets of C _d , the ones that fall from C _a to the rotary table of secondary classification B are assigned every fourth as B _a , B _a ′, and B _a ″, and all four sets are operated at once. The number of sets used for this primary classification section is not limited to four,
It is determined by the ratio of the processing speeds of the primary classification section C and the secondary classification section B. In the present invention, workability, maintainability, and sorting accuracy are improved by separating the measuring section and the sorting and sorting mechanism. By adopting this method, even test items that require a long measurement time t can be processed in t/p by setting the processing speed ratio of primary classification C and secondary classification B to p:1, making it possible to improve the index. can. Note that by providing several contact points in the measuring section, measurements of different characteristics can be performed simultaneously or sequentially, and measurement accuracy can be improved and measurement time can be shortened. The specific effects of the present invention are shown in the table below.

[Table] The embodiment of the present invention made it possible to smoothly switch from a resin mold type variable capacitance diode to a DHD (glass-sealed double heat sink diode) type, which greatly contributed to cost reduction. The invention is not limited to the above embodiments. For example 2
In place of the rotary table in the next sorting section, a multi-row chute is installed on the belt body 23, which moves linearly in the horizontal direction in one part and curves vertically in the other part to rotate endlessly, as shown in Figure 5. It may be something that has been done. In the explanation of the present invention, an automatic sorting device for variable capacitance diodes was used as an example, but the present invention is also applicable to general electronic components, especially 2-pole resistors, capacitors, 3-pole transistors, etc., which require multiple classification and grading. It can be applied to everything.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view showing the overall configuration of an automatic sorting device according to the present invention, FIG. 2 is a partially sectional perspective view illustrating each component of the device in FIG. 1, and FIG.
The figure is an explanatory diagram showing the form of classification according to the present invention.
The figure is a system block diagram schematically illustrating a sorting device according to the present invention, and FIG. 5 is a partial perspective view showing an application example of the present invention. 1... Magnetic stocker, 2... Circular drum, 3... Contact (measuring part), 4, 5... Tester,
6... Diode extraction mechanism, 7... Hopper-shaped chute, 8... Conveyance chain, 9... Hopper-shaped chute, 10... Rocking chute, 11... Primary sorting shelf, 12... Sensor, 13... ...Shattuta, 1
4... Rotating table, 15... Shutter, 16...
... fixed table, 17 ... storage bin, 18 ... sensor, 19 ... computer, 20 ... control unit,
21... tape reader, 22... typewriter,
23...Belt body.

Claims (1)

[Scope of Claims] 1. A measuring section for measuring characteristics of supplied electronic components; and a primary classification section having a plurality of chutes in one row for classifying electronic components based on the measurement results of the measuring section; The electronic parts classified in the secondary classification section are further classified, and the classification section is composed of a secondary classification section provided with multiple rows of chute that move in a direction approximately perpendicular to the row of chute of the primary classification section. An electronic component sorting device comprising: a plurality of measurement units and a plurality of primary classification units, and the primary classification unit is installed in parallel on the secondary classification unit. 2. The measurement section and the primary classification section are installed in a one-to-one correspondence.
The electronic component sorting device described in Section 1. 3 The secondary sorting section includes a rotary table having a plurality of rows of chute in the circumferential direction corresponding to the rows of chute of the primary sorting section, and a rotary table arranged so as to correspond to each chute provided on the rotary table. An electronic component sorting device according to claim 1 or 2, comprising a fixed table having a chute.