JPH0344435B2 - - Google Patents

Description

[Detailed description of the invention] [Table of contents] ●Overview ●Field of industrial application (Figure 7) ●Prior art ●Problems to be solved by the invention ●Means for solving the problems ●Operations ●Implementation Example (Figs. 1, 2, 3, 4, 5, 6) Effects of the invention [Summary] Positioning member for positioning the leaded electronic component 10 at the lower end of the inclined guide rail 31 constituting the inclined part 30 362 is provided, and a holding member 44-27 is provided for pressing and fixing the electronic component 10 positioned on the inclined surface to the hand 44 of the hand section 40.
By providing gripping claws 44-10 and 44-11 for gripping the electronic component 10 via the lead 11, it is possible to reliably grip the electronic component 10 on an inclined surface with a simple structure. .

[Industrial application field]

The present invention relates to an electronic component insertion device for inserting a large number of electronic components of the same type onto a printed board in order to perform heating tests on leaded electronic components such as ICs (integrated circuit components), and particularly relates to an electronic component insertion device for inserting a large number of electronic components of the same type onto a printed board. The present invention relates to a mechanism for gripping electronic components positioned at a position.

For example, an IC as an example of an electronic component with leads.
has a lead 11 as shown by the reference numeral 10 in FIG. is formed with a certain degree of safety factor (margin). However, a large number of ICs
There may be a mixture of defective products or near-defective products that have some kind of defect or low reliability. Therefore, before ICs are actually mounted on printed circuit boards, they are often subjected to high-temperature heating tests (commonly known as burn-in tests) to ensure the quality of the ICs. This high-temperature heating test is conducted under adverse conditions by housing a large number of the same type of IC in a constant temperature chamber. That is, many pieces (for example,
100 ICs) are inserted, a plurality of printed boards (for example, 10 boards) are housed in a box-shaped shelf in multiple tiers, and the shelves (usually multiple) are stacked in a thermostatic oven. After fitting and connecting the connectors of each printed board to the connectors provided in the thermostatic oven, the temperature inside the thermostatic oven is raised to a predetermined high temperature (e.g.
120℃) and apply a voltage equivalent to that during actual use (e.g. 5V) to each IC to generate heat, and maintain this state for a predetermined period of time (e.g. 72 hours, 48 hours). A high temperature heating test is carried out. As a result of this high-temperature heating test, ICs with some defects are broken or damaged and become defective products. After this heating test, each IC is functionally tested by a tester to determine whether it is good or bad, and only good products are mounted on the printed board.

[Conventional technology]

Conventionally, when conducting high-temperature heating tests on a large number of leaded electronic components such as ICs of the same type, in most cases workers wear a grounding band to connect to the ground and connect the printed circuit board for testing. ICs were inserted manually, either directly or one by one into multiple sockets mounted on a printed circuit board.

[Problem that the invention seeks to solve]

In the above conventional technology, the test printed board
Since the ICs are inserted manually one by one, a lot of time is required for insertion, which is very inefficient.

The present invention was created in view of these problems, and is capable of reliably gripping leaded electronic components positioned on the inclined part of an electronic component insertion device with a simple structure, and is capable of automatically handling electronic components. It is an object of the present invention to provide an electronic component gripping mechanism at an inclined portion of an electronic component insertion device that can contribute to smooth insertion.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention includes a sloped part 30 for transferring leaded electronic components 10 of the same type, and a device adjacent to the lower end side of the sloped part 30 and arranged around a predetermined fulcrum. Inclined part 30
It has a band part 40 rotatably disposed toward the slanted part 30, and the slanted part 30 is a slanted guide rail 3 for allowing the electronic component 10 to slide downward by its own weight.
1, and a positioning member 362 for positioning the electronic component 10 on the inclined surface of the guide rail 31 via the lead 11 is provided at the lower end of the guide rail 31, The hand 44 has a hand 44 for gripping the electronic component 10 positioned on the guide rail 31.
Pressing member 44- for pressing and fixing the
27, and a pair of gripping claws 4 for gripping the press-fixed electronic component 10 via its lead 11.
4-10 and 44-11, there is provided an electronic component gripping mechanism in an inclined portion of an electronic component insertion device.

[Effect]

The leaded electronic component 10 is positioned on the lower end inclined surface of the guide rail 31 of the inclined part 30 via the lead 11 by the positioning member 362,
Next, the electronic component 10 is pressed and fixed on the inclined surface by the holding member 44-27 of the hand 44, and after the positioning member 362 is retracted from the lead 11, the gripping claws 44-10, 44- of the hand 44 are 1
1 to press the lead 11 inward from the left and right sides, the lead-equipped electronic component 10 can be easily gripped.

〔Example〕

1 to 6 are diagrams for explaining an embodiment of the present invention. FIG. 1 is a side view A and a front view B of a hand 44 according to an embodiment of the present invention, and FIG. 3 is a schematic side view of an electronic component insertion device equipped with an embodiment of the invention, FIG. 4 is an external perspective view of the electronic component insertion device of FIG. 3,
FIG. 5 is a plan view of the test printed board 15, and FIG. 6 is a side view A and an end view B of a stake 22 for accommodating a leaded IC 10 as a leaded electronic component. When looking at Figure 3, the left hand side is called the rear side of the device and each part, the right hand side is called the front side (front side), and when looking from the front side to the rear side, the left hand side is called the left side, and the right hand side is called the right side. The same applies to other figures as well.

First, let us explain the overall structure and operation of this insertion device in the third section.
This will be briefly explained with reference to FIG. This device basically consists of a stake stock section 20 provided at the rear of the device, an inclined section 30 for feeding IC (electronic components) provided at the front side of this stock section 20,
A hand part 40 provided on the lower end side (front side) of this inclined part 30, and an XY table part 50 provided from the lower part of this hand part 40 to the front side.
, an elevator section 60 provided on the front side of this XY table section 50, and a printed board operating section 70 provided on the front side of this elevator section 60.

The stake stock section 20 includes a plurality of stake cassettes 21 (four in this example) arranged in parallel with their front ends tilted downward at a predetermined angle α (α=35° in this example), and the cassettes 21. 21 and a plurality of (for example, 10) stakes 22 that are stacked and housed in the stack. Statsuku 22
As shown in FIG. 6, a long length (for example,
It is formed to have a length of about 300 to 600 mm) and accommodates a plurality of ICs 10 (for example, about 20 to 30) in series. In FIGS. 3 and 4, reference numeral 211 is a stake front end receiving member provided on the lower surface of the cassette 21 and movable in the front-rear direction, 212 is a stake rear end receiving member, and 213 is a stake provided between the receiving members 211 and 212. An opening 214 for allowing the empty stake 22 to pass through and fall is a gate opening/closing plate provided at the lower part of the front end surface of the cassette 21 and movable up and down;
Reference numeral 23 indicates a receiving box for empty stakes 22, and 24 and 25 indicate cassette support frames, respectively. Statsuku 22
At the same time, the IC housed in the cassette 21 slides downward due to its own weight from the opening at the front end of the cassette, and is delivered to an inclined section 30, which will be described later. Then, the empty stake 22 falls into the receiving box 23 and is stored therein.

Similarly to the cassette 21, the inclined portion 30 has an inclination angle α
(in this case, α=35°), and has a plurality of (four in this case) guide rails 31 provided corresponding to each of the above-mentioned cassettes 21, and the upper end of this guide rail 31 IC guide member 32, stake stabbing member 33 and receiving member actuating piece 34
A pair of cylinders 351 and 352 are provided at the intermediate portion as the IC intermittent feeding mechanism 35, and a guide plate 361 is provided at the lower end as the IC positioning mechanism 36.
and a positioning piece 362 are provided. In addition, 37
3 represents a vibration cylinder for imparting impact vibration to the guide rail 31, and 38 represents a guide rail support frame.

The hand portion 40 has a support shaft 4 on a pair of left and right side plates 41.
Rotating plate 42 rotatably supported via 11
, a hand support plate 43 supported by the rotary plate 42 so as to be movable up and down, and a hand support plate 43 arranged in parallel corresponding to each guide rail 31 of the inclined portion 30 .
A plurality of hands 44 (four in this case) are fixed to the rotating plate 42, a cylinder 45 is fixed to the rotating plate 42 for moving the hands 44 up and down together with the hand support plate 43, and a rod 461 is rotated. It has a cylinder 46 that is connected to the moving plate 42 and rotates the hand 44 in the front and back direction about the support shaft 411. The hand 44 is formed with an IC gripping mechanism and an IC insertion mechanism, and is located on the inclined center line _C2 at an inclined angle β (in this case, β=35°) with respect to the vertical center line _C1 . The IC 10 is held at the first rotational position P ₁ and the IC 10 is inserted onto the printed circuit board 15 (in this case, onto the socket 18) at the second rotational position on the vertical center line C ₁ .

The XY table section 50 has an XY table 51 on which a printed board 15 is placed and fixed.
It moves in the XY directions and positions the printed board 15 in correspondence with the IC 10 that is held by the hand 44 and is to be inserted. The printed board 15 is formed as a test printed board as shown in FIG. 5, and has a connector 16 at one end, a pull-back hole 17 at the other end, and a socket 1 on the top surface.
A total of 100 8s are mounted in 8 rows, with 13 and 12 arranged in every other row, and a reinforcing frame 19 with an L-shaped cross section is fixed to the outer periphery.

The elevator section 60 includes a pair of left and right endless chains 61 (see FIG. 4) that can be raised and lowered, and this chain 61 pulls in a shelf (not shown) that accommodates a plurality of stages (for example, 10 stages) of printed boards 15. The shelf is placed on the chain 61, and the shelf is moved up and down in accordance with the aforementioned XY table 51 as necessary. Note that 62 indicates an operation panel.

The printed board actuator 70 is disposed on a base 71 so as to be slidable in the left-right direction (in the direction of arrow B in FIG. 4), and a shelf holder 72 having a plurality of spherical openings is attached to a chain at the bottom of the base 71. 61. The actuating part 70 has a shelf 72
When placed on top, as shown in FIG. 4, the shelf is moved to the side (to the right in this case), and after being accommodated in the elevator section 60 from the pedestal 72, it is moved to the center in the left-right direction. The printed board 15 in the shelf is pushed out onto the XY table 51 by an operating rod (not shown) installed in the actuating part 70,
And the pull-back hole 17 of the printed board 15 after inserting the IC.
(FIG. 5) and pull the printed board 15 back into the shelf.

Now, this embodiment will be explained with reference to FIGS. 1 and 2. In this embodiment, an IC with leads is mounted on an inclined surface positioned on the lower end of a guide rail 31.
(Leaded electronic component) 10, that is, is characterized by a gripping mechanism for the IC 10 at the first rotational position _P1 of the hand 44 shown in FIG. 3 described above. In this embodiment, the guide rail 31 is basically arranged at an angle.
and a positioning piece (positioning member) 362 disposed at the lower end of the guide rail 31, and for pressing and fixing the IC 10 positioned on the slope of the guide rail 31 (on the upper surface of the lower end) onto the slope. The holding member 44-27 and the IC1 fixed by this pressure
A hand 44 is provided with gripping claws 44-10 and 44-11 for gripping 0 via its lead 11.

As shown in FIGS. 3 and 4, the guide rail 31 is
In this example, four cassettes are arranged in parallel corresponding to each cassette 21 of the stake stock section 20, and are fixed on the support frame 38 at an inclined angle α (α=35° in this example). be done. The positioning piece 362 is
As a component of the IC positioning mechanism 36, the lower end of the guide rail 31 is provided with a
The guide rail 31 has a pair of left and right receiving claws 362a adjacent to both left and right side surfaces of the guide rail 31, and is driven by a cylinder 364. The positioning piece 362 is held at the predetermined position shown in FIG. 3 when positioning the IC 10,
The lead 11 of the IC 10 that has slid downward is received by the receiving claw 362a, and the IC 10 is moved to a predetermined position on the slope of the guide rail 31, that is, the lead 11 of the IC 10 is slid downward.
The hand 44 is positioned at a position corresponding to the first rotational position indicated by _P1 .

The side view (partial cross section) of the hand 44 is shown in Fig. 1.
It is constructed as shown in (a) and front view (partial cross section) (b). That is, a frame-shaped outer frame 44-1 serving as a hand body is fixedly provided on the lower surface of the hand support plate 43. As shown in FIG.
2b are vertically slidably connected to each other via a spherical opening 44-3. In the upper member 44-2a of the inner frame 44-2, as shown in Figure B, a pair of left and right pins 44-4 are provided so as to penetrate parallel to the center line _C3 (Figure A) and to be freely slidable. be done. The upper end of the pin 44-4 passes through the upper member 44-1a of the outer frame 44-1, contacts the upper surface of the hand support plate 43, and is fixed upward. A spring receiver 44-4a is provided on the upper part of the pin 44-4, and this spring receiver 44-4a
A compression spring 44-5 is wound around the pin 44-4 and disposed between the inner frame 44-2 and the upper surface of the upper member 44-2a of the inner frame 44-2. A total of two springs 44-5 are provided with a preload of a predetermined pressure (in this example, the two springs 44-5 have a preload of 4 kg in total). Therefore, due to this spring 44-5, the lower end surface of the side member 44-2b of the inner frame 44-2 is applied to the upper surface of the lower member 44-1c of the outer frame 44-1 by a total of 4 kg.
It is constantly pressed with the pressure of . A left and right pair of support shafts 44-6 and 44-7 are disposed to penetrate through the side member 44-2b of the inner frame 44-2 (see FIG. 2). Support shaft 44-
6, 44-7, grip arms 44-9, 44-8 are rotatably supported as a left and right pair.
The lower sides of -8 and 44-9 are arranged so that they can be opened and closed in the left-right direction, that is, in the direction of arrow D shown in FIG. The gripping arm 44-8 has a side surface shaped like an L-shape as shown in FIG.
As described above, the end portion of a is rotatably supported on the support shaft 44-7, and a gripping claw 44-10 is fixed to the lower portion 44-8b. Gripping arm 44-9
is the upper portion 4 of the gripping arm 44-8.
4-9a is rotated left and right as shown in figure B,
The lower portion 44-9b is formed oppositely in the front and back as shown in Figure A, and the upper portion 44-9a
As described above, the end portion of the is rotatably supported on the support shaft 44-6, and the lower portion 44-9b is provided with the gripping claw 4.
4-11 is fixedly installed. Gripping arm 44-8, 4
Operating holes 44-8c and 44-9c of the same shape are aligned and formed through the center portions of the upper portions 44-8a and 44-9a, respectively. An operating ring 44- is inserted into these operating holes 44-8c and 44-9c.
12, 44-13 are loosely fitted, respectively. The operating rings 44-12, 44-13 are the support pins 44
-14 (see figure B) is rotatably supported. The support pin 44-14 is connected to the gripping arm upper portion 44-8a, 4
The actuating plates 44-15 are respectively protruded and fixed on the front and rear surfaces of the actuating plates 44-15, which are arranged to be movable up and down between the actuating plates 4-9a. The actuating plate 44-15 is connected to a piston rod 44-31 of a cylinder 44-31 that is fixed along the center line _C3 on the upper surface of the upper member 44-2a of the inner frame 44-2.
It is connected and fixed to the tip of a (see figure 2). Therefore,
Due to the vertical movement of the piston rod 44-31a, the gripping arms 44-8, 44-9 are moved against the support shaft 44-31a.
7 and 44-6, respectively, and the actuating plate 4
4-15, the lower portions 44-8b and 44-9b side open and close in the left-right direction (in the direction of arrow D in Fig. Being exercised. The gripping claws 44-10, 44-11 are connected to the gripping arms 44-8,
It is opened and closed together with 44-9. Gripping claw 44-1
0,44-11 due to this opening and closing movement, IC1
Grasp or release 0. As shown in the figure, a frame-shaped socket holding member 44 is installed inside the inner frame 44-2.
-16, 44-17 are arranged, and these presser members 44-16, 44-17 are connected to the inner frame 44-2 via a spherical opening 44-18 so as to be slidable in the vertical direction. And presser member 44-16,4
4-17 are arranged as a left and right pair, as shown in FIG. As shown in FIG.
9 are fixedly installed, two each, for a total of four parallel to the center line _C3 . Each of these pins 44-19 is
Its upper end side slidably passes through the upper member 44-2a of the inner frame 44-2, and is locked in a hanging state of the upper member 44-2a by a receiving ring 44-20 provided at its upper end. . Upper member 44- of inner frame 44-2
A compression spring 44-21 is connected to each pin 44-2a between the lower surface of the pin 2a and the upper surface of the holding members 44-16, 44-17.
19, respectively. Therefore, a total of four springs 44-21 are provided, and are provided with a predetermined preload for the total of the four springs (in the case of this example, the preload for the total of the four is set to approximately 1.5 kg). . As a result, the socket pressing members 44-16, 44-17
is suspended from the inner frame 44-2 via the support pin 44-19, and the compression spring 4 is in a free state.
4-21, total approximately 1.5Kg (1 presser member 1 individual)
It is constantly pressed downward with a pressure of 0.75Kg).
As shown in the figure, the lower member 44- of the outer frame 44-1
1c, a pair of front and rear support pins 44-22 (only the front and rear pins are shown) are attached to the lower member 4 about the center line _C3 .
4-1c so as to be slidable therethrough. These pins 44-22 are secured to the upper surface of the lower member 44-1c by a receiving ring 44-23 provided at an intermediate portion thereof. As shown in Figure A, a spring receiving plate 44-24 having an inverted L-shaped cross section is fixed on the inner surface of the lower member 44-1c, and the pin 44-2
The upper end portion of 2 is slidably penetrated therethrough.
This spring receiving plate 44-24 and receiving ring 44-2
3, a compression spring 44-25 is connected to each pin 44-2.
2, respectively. This spring 44
-25 are provided in total, and are provided with a predetermined preload for the total of the two pieces (in the case of this example, the preload for the two pieces in total is set to about 2 kg). Therefore, pin 44
-22 is pressed onto the upper surface of the outer frame lower member 44-1c via the receiving ring 44-23 by the spring 44-25 with a total pressure of about 2 kg (1 kg per pin) in the free state. And these bearing pins 4
A pushing plate 44-26 for pushing the IC 10 is fixedly installed at the lower end of 4-22. The push-in plate 44-26 is disposed with a slight gap between the lower surface of the outer frame lower member 44-1c and the lower surface of the outer frame lower member 44-1c. Push plate 44-
As shown in Fig. 26, a holding member 44-27 for pressing the IC 10 is located approximately at the center of the
It is arranged parallel to C ₃ and slidably penetrates the push plate 44-26. The holding member 44-27 has a head 44-27a for pressing the IC10 at its lower end, and a receiving ring 44-28 fixed at its upper end.
is secured to the upper surface of the push-in plate 44-26. The lower surface of the pushing plate 44-26 and the holding member 44
- Compression spring 44 between head 44-27a of 27
-27. This spring 44-2
9 is arranged with a predetermined preload (in this example, the preload is set to about 0.05 kg). Therefore, in the free state, the holding member 44-27 is constantly pressed downward by the spring 44-29 with a pressure of about 0.05 kg, and its head 44-27a is pushed downward from the lowest surface of the pushing plate 44-26. It stands out. In FIG. 1A, reference numeral 44-30 indicates a micro switch fixed in a recess of the lower outer frame member 44-1c.
This micro switch 44-30 is used when an abnormal situation such as incorrect insertion of the IC10 occurs.
4-26, and serves to send out an abnormal signal.

This hand 44 is constructed as described above, and as described later, the holding member 44-27 is
10 is pressed and fixed onto an inclined surface, and a pair of left and right gripping claws 44-10, 44-11 can grip this IC 10 via its leads 11. Figure B shows a state in which the IC 10 is held in this manner.

Next, the operation of this embodiment will be explained with reference to FIG. In Fig. 2, Figs. C and E are front views seen from the directions of arrows _E1 and _E2 in Figs.

First, as shown in Figure A, the positioning piece 362 is used to stop and position the IC 10 that has been sliding down the guide rail 31 under its own weight. In this case, the lead 11 of the IC 10 is locked by the receiving claw 362a of the positioning piece 362, and the IC 10 is positioned with the lead 11 as a reference. Next, the hand 44 moves diagonally downward and presses the holding member 44-27.
(head 44-27a) approaches the top surface of IC10.

Next, as shown in FIG.
4-26 (However, the push plate 44
-26's bottom surface does not contact IC10). As a result, a compressive deflection action is generated in the compression spring 44-29, and the pressure of the spring 44-29 causes the holding member 44-27 to press and fix the IC 10 onto the inclined surface of the guide rail 31. At this time, the gripping claw 44-1
0 and 44-11 are located with their tips (lower ends) open on the sides of the left and right leads 11 of the IC 10, as shown in FIG. In addition, the left and right leads 11 of the IC 10 are in a free state, as shown in Figure C, approximately.
It has expanded outward by about 10°.

Next, as shown in FIG. 2, after the IC 10 is pressed and fixed by the holding member 44-27, the positioning piece 362 moves backward (retracts) in front of the guide rail 31.

Next, as shown in Fig. E, the gripping claws 44-10,
The IC 10 is gripped by pressing the leads 11 inward until the left and right leads 11 become approximately parallel to each other with their tips (lower ends) when the leads 44-11 are closed.
The position where the lead 11 is pressed and gripped is preferably the lower part of the lead 11. With the above steps, the gripping operation of the IC 10 is completed.

〔Effect of the invention〕

As explained above, according to the present invention, the positioning piece (positioning member) 362 provided at the lower end of the inclined guide rail 31 constituting the inclined portion 30 positions the guide rail 31 via the lead 11. The electronic component 10 with leads is placed in the hand 44.
After pressing and fixing the lead 11 onto the inclined surface with the holding member 44-27 and retracting the positioning piece 362, the lead 11 is pressed from the side with the pair of gripping claws 44-10 and 44-11. Yotsute electronic parts 1
0 can be held easily and reliably,
With a simple structure, it is possible to realize accurate and smooth automatic insertion of the lead electronic component 10.

[Brief explanation of drawings]

1 is a side view A and a front view B of a hand 44 according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of the operation of the embodiment of the present invention, and FIG. 3 is an electronic A schematic side view of the component insertion device, FIG.
5 is a plan view of the test printed board 15, and FIG. 6 is a side view and an end view of the stay 22 for accommodating a leaded IC 10 as a leaded electronic component. FIG. 7 is a side view A and an end view B of the leaded IC (leadded electronic component) 10. In Figures 1 to 6, 10 is an IC with leads (electronic component with leads), 11 is a lead, 15 is a printed board (for testing), 20 is a stake stock section, 3
0 is an inclined part, 31 is an inclined guide rail, 36 is an inclined part
IC positioning mechanism, 361 is a guide plate, 362 is a positioning piece (positioning member), 362a is a receiving claw,
40 is a hand part, 44 is a hand, 44-1 is an outer frame, 44-2 is an inner frame, 44-5, 44-21, 4
4-25, 44-29 are compression springs, 44-6, 4
4-7 is a support shaft, 44-8, 44-9 are gripping arms, 4
4-10, 44-11 are gripping claws, 44-12, 4
4-13 is an actuation ring, 44-15 is an actuation plate, 4
4-16, 44-17 are socket holding members, 44
-26 is a pushing plate, 44-27 is an IC holding member,
44-27a is the head, 44-31 is the gripping arm 44-
8 and 44-9 are cylinders for opening and closing, and 44-31a is a piston rod.

Claims (1)

[Scope of Claims] 1. A sloped part 30 for transferring leaded electronic components 10 of the same type, and a sloped part 30 arranged adjacent to the lower end side of the sloped part 30 and directed toward the sloped part 30 about a predetermined fulcrum. It has a hand part 40 that is rotatably arranged, and the inclined part 30 is an inclined guide rail 3 for allowing the electronic component 10 to slide downward by its own weight.
1, and a positioning member 362 for positioning the electronic component 10 on the inclined surface of the guide rail 31 via the lead 11 is provided at the lower end of the guide rail 31, It has a hand 44 for gripping the electronic component 10 positioned on the guide rail 31.
Pressing member 44 for pressing and fixing 0 on the inclined surface
-27, and a pair of gripping claws 44-10, 44-11 for gripping the pressed and fixed electronic component 10 via its lead 11. Electronic component gripping mechanism.