JPH0340943B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is a method for moving electronic components to be measured into a measurement section in a constant temperature chamber in order to test the operation of electronic components such as IC (integrated circuit) devices in a low-temperature atmosphere. The present invention relates to an electronic component transport device that transports electronic components, and particularly relates to an electronic component transport device that can prevent jamming of electronic components and increase the number of electronic components that can be processed.

BACKGROUND TECHNOLOGY As shown in FIG. 4, a conventional electronic component transport device of this type has an appropriate inclination angle for supplying an electronic component 2 to be measured stored in a magazine 1 to a measuring section 4 in a constant temperature oven section 3. It also had a sorting chute 7 with an appropriate inclination angle for sorting the electronic components 2 and storing them in the magazine 6 according to the measurement results of the measuring section 4. Note that the reference numeral 4' is a cable connected to the electronic component tester. In order to perform a low temperature test, liquid nitrogen is introduced into the thermostatic chamber 3 to maintain the temperature within the chamber at the set temperature. It may leak out. For example, as shown in FIG. 5, nitrogen gas flows out as shown by arrows A and A' from the shutter 10 that moves up and down on the exit 9 side of the thermostatic chamber 3, and dew condenses on the surface of the classification chute 7. Something happened. At this time, the electronic component 2 sliding on the sliding surface of the classification chute 7 was attracted to the dew condensation portion and became unable to slide, causing jamming. Therefore, conventionally, as shown in FIG. 5, pressurized air is blown from a stopper 11 provided at the terminal end of the classification chute 7 from diagonally downward to diagonally upward as shown by arrow B to remove the nitrogen gas. This prevents jamming by drying or blowing away condensation caused by water leakage.

Problems to be Solved by the Invention However, in the above-mentioned prior art, the blowing direction of the pressurized air to prevent jamming intersects with the sliding direction C of the electronic component 2 at an acute angle as shown by arrow B. The above pressure air is in the above sliding direction C.
It had a vector component B′ in the opposite direction. Therefore, the electronic component 2 sliding on the classification chute 7 in the direction of arrow C is braked by the vector component B', and its sliding speed is reduced. As a result, the number of items to be sorted by the sorting chute 7 and stored in the magazine 6 is reduced. Therefore, an object of the present invention is to solve such problems.

Means for Solving the Problems According to the present invention, the above-mentioned problems can be solved by a classification chute having an appropriate inclination angle for supplying electronic components to be measured stored in a magazine to a measuring section in a thermostatic chamber section for low-temperature testing. and a sorting chute with an appropriate inclination angle for sorting and storing electronic components in magazines according to the measurement results of the measuring section, in the vicinity of the inlet of the thermostatic oven section of the sorting chute or the thermostatic oven section of the sorting chute. An air passage whose blowing direction intersects the sliding direction of the electronic component at an acute angle from the lower surface side toward the sliding surface side of the electronic component is bored somewhere near the outlet, and the electronic component is flown through this air passage. The problem is solved by providing an electronic component transport device characterized in that pressure air having a vector component along the sliding direction C is blown out diagonally upward.

Function The electronic component conveying device according to the present invention has an air passage formed from the lower surface side of the distribution chute or the sorting chute toward the sliding surface side of the electronic component and having a blowing direction that intersects at an acute angle with the sliding direction of the electronic component, By blowing out pressure air having a vector component along the sliding direction of the electronic components obliquely upward through this air passage, condensation adhering to the surface of the distribution chute or classification chute is dried or blown away, and
Electronic components sliding on the distribution chute or sorting chute are pushed out along the sliding direction.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The electronic component transport device according to the present invention is similar to the conventional example shown in FIG.
It has a distribution chute 5 with an appropriate inclination angle for supplying electronic components 2 to be measured such as devices to a measuring section 4 in a constant temperature chamber section 3 for low-temperature testing, and classifies the electronic components 2 based on the measurement results of the measuring section 4. magazine 6
It has a sorting chute 7 with an appropriate angle of inclination to accommodate the classification chute 7.

The distribution chute 5, as shown in FIG.
It is located on the entrance 8 side of the thermostatic oven section 3, and supplies the electronic components 2 to be measured stored in the magazine 1 to the thermostatic oven section 3 by automatic sliding.
The inlet 8 of the constant temperature bath section 3 of this distribution shoe 5
In the vicinity toward
2 is drilled. This air passage 12 blows out pressurized air obliquely upward as shown by arrow D to the sliding surface of the distribution chute 5, and the blowing direction D of this pressure air is the sliding direction of the electronic component 2 on the distribution chute 5. It intersects with E at an acute angle. A nozzle member 14 in which a nozzle 13 continuous with the air passage 12 is formed is provided on the lower surface side of the distribution chute 5, and a throttle valve 15 is provided.
is provided. This throttle valve 15 connects the pressure air supply pipe 16 and the nozzle 13, and also adjusts the flow rate of the pressure air.

When the throttle valve 15 is opened to supply pressurized air from the supply pipe 16, the pressurized air is blown out in the direction of arrow D through the nozzle 13 and air passage 12. At this time, since the diagonally upward blowing direction of the pressurized air intersects the sliding direction E of the electronic component 2 at an acute angle as shown by arrow D, the pressure air has a vector component in the direction along the sliding direction E.
It has D′. Therefore, by blowing out the pressurized air in the direction of arrow D, the distribution chute 5 is heated by the low temperature nitrogen gas flowing out from the shutter 10 at the inlet 8 of the thermostatic chamber 3 as shown by the arrows A and A'. Condensation adhering to the surface can be dried or blown away, and the electronic component 2 sliding on the distribution shoe 5 can be pushed out by the vector component D' along the sliding direction E, increasing its sliding speed.

As shown in FIG. 3, the classification shot 7 is as follows:
It is located on the outlet 9 side of the thermostatic oven section 3, and the electronic components 2 are classified as appropriate based on the measurement results of the measurement section 4.
It is stored in the magazine 6 by automatic sliding. In the vicinity of the outlet of the constant temperature chamber section 3 of the classification chute 7, there is provided a cable extending from the lower surface side to the sliding surface side of the electronic components 2 on the upper surface, as in the case of the distribution chute 5 shown in FIGS. 1 and 2. An air passage 12' is bored therein. This air passage 12' blows out pressurized air obliquely upward as shown by arrow F toward the sliding surface of the classification chute 7. It intersects direction C at an acute angle. The nozzle member 14', the throttle valve 15' and the pressure air supply pipe 16' are constructed in the same manner as in the distribution chute 5 of FIG. Therefore, when the throttle valve 15' is opened and pressure air is supplied from the supply pipe 16', pressure air is blown out obliquely upward in the direction of arrow F through the nozzle 13' and the air passage 12', and the pressure air includes a vector component F' in the direction along the sliding direction C of the electronic component 2.

Note that the present invention does not provide air passages 12 or 1 only in either the distribution chute 5 or the classification chute 7.
Although air passages 12 and 12' may be provided in both the distribution chute 5 and the classification chute 7 to blow out pressurized air, air passages 12 and 12' may be provided in each air passage 1.
Pressure air may be blown out from 2, 12'. In the latter case, jamming can be prevented at both the inlet 8 and the outlet 9 of the thermostatic chamber 3, and the sliding speed of the electronic components 2 can be increased to greatly increase the number of electronic components processed.

Effects of the Invention Since the present invention is configured as described above, the distribution chute 5 or the classification chute is controlled by the low temperature nitrogen gas flowing out from the shutter 10 at the inlet 8 or outlet 9 of the constant temperature chamber section 3 for low temperature testing. The dew condensation adhering to the surface of the electronic component 7 can be dried or blown off by blowing diagonally upward pressure air from the air passages 12 and 12' formed in the respective chutes 5 and 7. The electronic component 2 sliding on the distribution chute 5 or the sorting chute 7 can be actively pushed out by the vector component along the sliding direction. Therefore, the jamming prevention effect on each chute 5, 7 of the electronic component 2 can be improved.

Furthermore, the vector component of the pressure air along the sliding direction of the electronic component 2 can push out the electronic component 2 sliding on the distribution chute 5 or the classification chute 7 along the sliding direction, increasing the sliding speed. can do. Therefore, the electronic components 2 to be measured can be promptly supplied to the measurement section 4, and the electronic components 2 after measurement can be promptly classified and stored in the magazine 6, increasing the number of electronic components 2 to be processed for measurement. measurement efficiency can be improved.

[Brief explanation of drawings]

FIG. 1 is a front explanatory view showing the distribution chute portion of the electronic component transfer device according to the present invention, FIG. 2 is a sectional view showing the main part thereof, FIG. 3 is a front explanatory view showing the classification chute portion, The figure is a front view showing the entirety of the conventional electronic component transport device and the present invention, and FIG. 5 is a front explanatory view showing the sorting chute portion of the conventional electronic component transport device. DESCRIPTION OF SYMBOLS 1...Magazine, 2...Electronic components, 3...Thermostat section, 4...Measurement section, 5...Distribution chute, 6...
... Magazine, 7 ... Classification chute, 8 ... Inlet of constant temperature chamber section, 9 ... Outlet of constant temperature chamber section, 12 ... Air passage, 13 ... Nozzle.

Claims (1)

[Scope of Claims] 1. A distribution chute with an appropriate inclination angle for supplying electronic components to be measured stored in a magazine to a measuring section in a thermostatic chamber section for low-temperature tests; In an electronic component transfer device having a sorting chute with an appropriate inclination angle for sorting and storing electronic components in magazines, the electronic components are placed either near the inlet of the thermostatic oven section of the distribution chute or near the outlet of the thermostatic oven section of the sorting chute from the bottom side. An air passage whose blowing direction intersects the sliding direction of the electronic component at an acute angle is bored toward the sliding surface of the electronic component, and through this air passage, pressure air having a vector component along the sliding direction of the electronic component is directed diagonally upward. An electronic component conveying device characterized by blowing out air. 2. The above-mentioned air passage is provided both in the vicinity of the inlet of the constant temperature chamber part of the distribution chute and in the vicinity of the outlet of the constant temperature chamber part of the classification chute, and pressurized air is blown out from each air passage. The electronic component transport device according to scope 1.