JPH07120872B2 - Chip polarity alignment and alignment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION I ... Industrial Application Field Recently, various automatic chip mounting devices have been used to form plates (square plates, disks, etc.) or cylinders (square plates, disks, etc.) such as resistors and capacitors. A small electronic component (cylindrical, cylindrical, etc.) (hereinafter simply referred to as a chip) is automatically and accurately mounted (mounted) on the printed circuit board, and the chip can be soldered onto the printed circuit board in this state. Bonding is performed appropriately.

INDUSTRIAL APPLICABILITY The present invention is an automatic chip mounter of various types, which is a part of the automatic chip mounter, that is, a large number of chip feeding paths (example tubes) fed into a hopper or the like.
Automatically separates and feeds into one row in the inside, and inserts it at an arbitrary position in the middle of the chip feeding path of the chip automatic separating and feeding device that feeds to the predetermined loading hole of the jig board (template) below or the pickup mounting device etc. However, the present invention provides a chip polarity and other measurement alignment device that can measure + -polarity, capacitance, resistance value, etc. of the chip during the separation and feeding of the chip.

II ... Conventional problems and objects of the present invention (1) ... Some of the above chips have positive and negative polarities (eg, diodes, tantalum capacitors, etc.). When it is fed to, the direction of its polarity must be aligned with a certain direction with the same polarity, but the large number of chips loaded with the above hoppers are completely unorganized, and therefore, in the chip feeding path. The separated and fed chips also have different polarities, and naturally the polarities will not match if they are fed directly to the jig board or the like.Therefore, the device of the present invention is provided in the middle of the chip feeding path, The device measures the polarity of the chips and aligns the chips in the direction according to the polarities, so that the polarities of the chips are aligned and fed in a certain direction. (2) ... resistance, Chips such as capacitors have their resistance
It is necessary to check the capacity and other performance, but once
If a defective product is mounted on the printed circuit board, it cannot be replaced, and thus the entire printed circuit board is considered defective. Therefore, before mounting on a printed circuit board, the above-mentioned various performances of each chip are checked by the device of the present invention during the process of separating and feeding chips, and defective products can be eliminated at this stage. It is a thing.

(3) Further, the inventor and the applicant of the present invention have previously proposed Japanese Patent Application No. 57-167385 (Japanese Patent Publication No. 2-44397, Japanese Patent No. 1623491), an invention as another device for achieving the above two objects. The patent application has been filed for the name "Chip polarity detection device", but in the invention according to the application, there are variations in the dimensional system of each chip, especially in its length dimension. And, there is a possibility that trouble may occur in the rotation operation of the rotor that partially retains the tip in its through hole and rotates in the set direction to inspect and eject the tip, so further research is conducted. The present invention has been completed.

III. Means for Solving the Problem That is, according to the present invention, an arbitrary position in the middle of the chip feeding path is divided into an upper feeding path and a lower feeding path, and a lower end opening of the upper feeding path and a lower feeding path. The upper end opening of the above is installed with a set dimension, the through hole for temporarily retaining the chip is vertically penetrated, and the rotary shaft provided with the set angle rotatable and set dimension forward and backward freely in the clockwise or counterclockwise direction, Installed between the lower end opening and the upper end opening, the through hole of the rotary shaft is initially communicated with the lower end opening of the upper feed passage, and is communicated with the upper end opening of the lower feed passage at the forward position of the rotary shaft. In addition, the inspection terminal is installed at the left and right horizontal positions of the rotating shaft in the forward position, and the chip is dropped and supplied into the through hole of the rotating shaft vertically connected from the upper feed path. Insert in the through hole by rotating the rotating shaft clockwise or counterclockwise by a set angle Horizontal position stop, advance of set dimension of rotary shaft, inspection of polarity etc. by contact between tip and terminal at the same position, polarity of rotary shaft at the same position rotated by set angle clockwise or counterclockwise is aligned in a certain direction By discharging the tip to the lower feed path, rotating the rotating shaft clockwise or counterclockwise at a set angle and returning to the original state by retracting the set dimension, the polarity of the tip is measured and the polarity is kept constant. The above-mentioned problems are solved by a device for aligning and measuring the polarity of chips, which is characterized in that they are fed in the same direction.

IV ... Example-1 Hereinafter, an example of the present invention will be sequentially described with reference to the drawings (FIGS. 1 to 3). In various automatic chip mounting apparatuses, a chip feeding path of an automatic chip separation / feeding apparatus (eg, The upper feed path A ₁ and the lower feed path A ₂ are divided by separating arbitrary positions in the middle of the tube), and the lower end opening ₁ of the upper feed path A 1 and the upper end opening ₂ of the lower feed path A ₂ are separated. The set dimension l is installed at a distance, the through hole 3 for temporarily retaining the tip t is vertically penetrated, and the set angle can be rotated clockwise or counterclockwise by a set angle, and the set dimension l (same as the dimension between 1 and 2 above). ) A rotating shaft B provided so as to be able to move forward and backward is installed between the lower end opening 1 and the upper end opening 2, and the through hole 3 of the rotating shaft B is initially set to the lower end opening ₁ of the upper feeding path A _1. It is provided so as to communicate with the upper end opening ₂ of the lower feeding path A ₂ at the forward position of the rotating shaft B. The terminal 4 for inspection is installed at the left and right horizontal positions of the rotary shaft B of the chip t, and the chip t is dropped and supplied from the upper flow passage A ₁ into the through hole 3 of the rotary shaft B. The tip t in the through hole 3 is horizontally stopped by rotating clockwise or counterclockwise and a set angle (eg, 90 ° clockwise), and the set dimension l of the rotation axis B is advanced.
+-Due to contact between the tip t and the terminal 4 at the same forward position
The lower feed path A of the chip that aligns the polarity in a fixed direction by the inspection of the polarity, etc., and the rotation or rotation of the rotation axis B at the same position in the clockwise or counterclockwise direction and the set angle (eg, 90 ° clockwise or counterclockwise). _By ejecting to ₂ , rotating the rotation axis B clockwise or counterclockwise at a set angle (eg 180 ° or 360 ° clockwise or counterclockwise) and returning to the original state by retracting the set dimension l. The chip polarity / inspection alignment device of the present invention is configured so that the chip polarities and the like are measured and the polarities are aligned and fed in a fixed direction.

V ... Operation (Embodiment 1) The operation of the above embodiment will be described below.
(Refer to FIG. 3) (1) ... A large number of chips t which are separated from a hopper or the like (not shown) and are continuous in one line in the vertical direction in the upper feed path A ₁ .
Since the lowest chip t of is dropped into the through hole 3 perpendicular to the rotation axis B and the feed path A ₁ does not communicate downward,
It is stopped in the through hole 3. ((A) in FIG. 3) (2) ... Then, the rotating shaft B is rotated, for example, by 90 ° in the clockwise direction to bring the tip t in the through hole 3 into a horizontal state.

(3) ... Next, the rotary shaft B is appropriately advanced to a set dimension l, that is, the position of the through hole 3 is directly above the upper end opening ₂ of the lower feed path A ₂ , and the rotary shaft B is installed at this position. Both ends of the chip t are brought into contact with the terminal 4 for detecting the polarity and the like, and the + -polarity and the like are measured. ((B) in FIG. 3) (4) ... In the case of (c) a, when the rotational axis B is fed by the command issued by the measurement result, for example, the negative pole is aligned downward. Rotate 90 degrees counterclockwise,
(C) In the case of (b), it rotates 90 ° clockwise, and this rotation causes the tip t to be in communication with the through hole 3.
It is discharged to the upper end opening ₂ of A _{2 with} the negative pole aligned downward. ((C) and (d) in FIG. 3) (5) ... The rotating shaft B which has finished discharging the tip t is restored and rotated clockwise or counterclockwise to return the through hole 3 to the vertical state. Further, the same size l as the forward dimension l is retracted to return to the original position, and the lower end opening ₁ of the upper feeding path A 1 and the through hole 3 are in communication with each other, so that the through hole 3 is next in position. Chips are dropped and loaded.

(6) By repeating the operations of the above (1) to (5), the chips in the chip feeding path are aligned in the positive and negative polarities in a certain direction, and various inspections are performed as necessary. It will be continuously fed at a high speed to the lower jig board.

(7) Further, when the polarity to be aligned is changed from the above (for example, the + pole is directed downward), the rotation direction and the angle of the rotary shaft can be appropriately set accordingly.

(8) When the chip capacitance or resistance value is to be measured, the amplifier connected to the terminal 4 is replaced with a target amplifier, and, for example, a defective chip is detected as a result of inspection. Occasionally, the operator is instructed to do so, and the position, number, etc. of the chip feed path where the defective chip is detected are displayed on the operator's monitor TV, and (9) ... Also, for example, the defective chip discharge path E May be provided (FIG. 2), and only the defective chip may be discharged from the path E. At this time, for example, the genuine tip has the rotation axis B
Rotate 90 ° clockwise or counterclockwise to drop chip feed path A ₂ and feed the defective chip. Rotating shaft B rotates 45 ° counterclockwise and the discharge path E is closed. 15 is opened and provided so as to discharge to the defective chip discharge furnace E.

VI ... Embodiment 2 What is shown in FIGS. 4 to 7 is the rotary shaft 3 of the device of the present invention.
It is an example of a specific configuration of the main part centered on.

That is, to explain the embodiment, similarly to the above, in various automatic chip mounting apparatuses, an arbitrary position in the middle of the chip feeding path of the automatic chip separating and feeding apparatus is divided to separate the upper feeding path A ₁ and the lower feeding path. The feed path A ₂ is provided, and the lower end opening ₁ of the upper feed path A ₁ and the upper end opening ₂ of the lower feed path A ₂ are installed at a set distance l, and a through hole 3 for temporarily retaining the tip t is provided at the tip end. The axis of rotation B that extends vertically extends through the lower end opening 1 and the upper end opening 2
Installed in between, the through hole 3 of the rotating shaft B is initially communicated with the lower end opening ₁ of the upper feeding path A ₁ , and the upper opening ₂ of the lower feeding path A ₂ is in the forward position of the rotating shaft B. The terminal 4 for inspection is installed at the left and right horizontal positions of the rotating shaft B at the forward position, and the rear end of the rotating shaft B is provided at the front end of the central shaft hole 5 of the coupling C. It is inserted and fixed and provided integrally with the coupling C. The coupling C has a flat portion 6, a gradient portion 6'and a mountain top portion 7 which are continuously formed on the outer peripheral surface of the tip portion thereof, and the mountain top portion 7 is formed.
A cam portion 9 having a recessed portion 8 formed therein is bored, and a slit 10 penetrating the central shaft hole 5 is cut behind the cam portion 9 so as to be slidably fitted in the slit 10. The key 11 is inserted into the rotary shaft 12 of the pulse motor D which is loosely inserted from the rear end of the central shaft hole 5.
To secure the coupling and the rotary shaft 12 secured to it.
However, the key 11 in the slit 10 is used as a guide so as to be able to move forward and backward by a set dimension 1 and to be rotated by a set angle in a clockwise or counterclockwise direction by rotation of the pulse motor D.
In addition, the cam roller 13 is installed at a fixed position and the coupling C
The cam roller 13 is constantly brought into pressure contact with the cam portion 9 by the elastic force of the spring 14 installed between the pulse motor D and the pulse motor D to form a tip polarity and other inspection and alignment device.

VII ... Operation (Embodiment 2) The operation of the apparatus of the above embodiment will be described in the case where the negative electrode of the tip t is aligned downward for feeding. (1) ... Continuously in one line in the upper feeding path A ₁ . The lowest chip t of the many chips t that are running is the through hole 3 perpendicular to the rotation axis B.
It is dropped and loaded into the hole and is retained in the hole. ((A) in FIG. 4) At this time, the cam roller 13 is pressed against the crest portion 7 (90 ° position) of the cam portion 9 of the coupling C. (Refer to FIG. 7, which is a development view of the shape of the cam portion 9. For convenience of explanation, the cam roller 13 in the stationary fixed position moves, contrary to the actual situation,
The cam portion 9 is shown as immovable. (2) ... Then, the pulse motor D is rotated and the rotary shaft B is rotated 90 ° clockwise through the coupling C to bring the through hole 3, that is, the tip t therein into a horizontal state. The rotation of the pulse motor D is performed by rotating the rotary shaft 12 → the key 11 fitted in the slit 10 of the coupling C → the key 11 and the slit 10.
The rotation is transmitted in the order of collision with the inner surface and rotation of the rotary shaft B having its rear end fixed to the central shaft hole 5 of the coupling C.

In the course of this rotation, the cam roller 13 falls from the peak 7 and reaches the 0 ° (= 360 °) position of the flat portion 6.

Therefore, when the cam roller 13 drops from the crest 7 (90 ° position) to the 0 ° position (flat portion 6), the coupling C, that is, the rotating shaft B, which is constantly pressed by the spring 14, advances by the falling dimension l. Then, the through hole 3 reaches immediately above the upper end opening ₂ of the lower feeding path A ₂ .

(3) Then, the terminals 4 for inspection installed at the same horizontal position as the chip t in the horizontal state at the above-mentioned position come into contact with both ends of the chip t to perform the inspection of the polarity and the like. Instruct the operator of the inspection result, and in the case of the instruction, the pulse motor D rotates 90 ° counterclockwise in the case of Fig. 3 (c) a [Fig. 7, from 0 ° (= 360 °) position] 9
It reaches the 0 ° position, that is, the inside of the recessed portion 8. ], − With the pole facing downward, and discharged to the upper end opening 2. In the case of FIG.
It rotates 90 ° clockwise [from Fig. 7, 360 ° (= 0 °) position to 270 ° position. ] Similarly, it is discharged to the upper end opening 2 with the negative electrode facing downward. (Fig. 3, (d) a,
(D) b) (4) ... Rotating shaft B that ejects the tip t to the lower feeding path A ₂ .
In the case of (d) a, rotate 360 ° clockwise (7th
From the 90 ° position in the figure, go through 0 ° = 360 °, 270 °, 180 °, 90
Return to the summit 7 at the ° position. ), (D) b,
It rotates 180 ° clockwise (in FIG. 7, it returns from the 270 ° position to 180 ° and then to the 90 ° mountain top 7), and the cam roller 13 climbs up the slope 6'from the flat part 6 and the mountain top 7 moves. Therefore, the rotation axis b retreats by the ascending dimension l (the same dimension as the falling dimension l), and thus the rotationally restored through hole 3 communicates with the lower end opening ₁ of the upper feeding path A ₁ at the original position. Then, the next chip t is dropped and loaded into the hole 3.

(5) By repeating the operations of the above (1) to (4), the tips t in the tip feeding path are aligned in the positive and negative polarities in a certain direction, and various inspections are performed as necessary. hand,
It will be continuously supplied at a high speed to the jig board below.

(6) ... Also, when changing the polarity to be aligned from the above,
It is possible to set the rotation direction of the rotating shaft B to the opposite direction to the above (3) and (4).

VIII ... Effect (1) ... Some chips have + and-polarity (eg, diodes, tantalum capacitors, etc.). When this chip is fed to a jig board or a pick-up mount device, etc. The direction must be aligned in a fixed direction with the same polarity, but the device of the present invention detects the polarity of the chips fed in an unsorted state in which the polarities are varied up and down in the chip feeding path. , It has an excellent feature that it can align the chips in a certain direction for high-speed feeding by aligning the direction according to the polarity.

(2) ... In addition, it is essential to check the resistance, capacitance, and other performance of chips such as resistors and capacitors before mounting them on the printed circuit board. Once mounted,
Although the entire printed circuit board may be defective, the device of the present invention can perform the above-mentioned various checks on each chip during the process of separating and supplying the chips, and reject the defective chips at this stage. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a schematic configuration of the first embodiment of the device of the present invention, FIG. 2 is a sectional view taken along the line A′-A ″, and FIG. 3 (a), (b), (c), ( D) is an explanatory view showing the order of action, and FIG. 4 is a partially cutaway front view of the second embodiment having a specific configuration.
(A) is a view in which the rotary shaft is in the original position, (b) is a view in which the rotary shaft is moved forward by the set dimension, FIG. 5 is its B'-B ″ cross-sectional view, and FIG. 6 is a main part of the configuration of FIG. Fig. 7 is a developed view of the cam section showing the working relationship with the cam roller Symbol A ₁ ...... Upper feed path A ₂ ...... Lower feed path B ...... Rotary axis C ...... Coupling D ... Pulse motor E ... Defective tip discharge hole t ... Chip l ... Set forward / backward dimension 1 ... Lower end opening 2 ... Upper end opening 3 ... Through hole 4 ... Terminal 5 ... Center axis hole 6 ... Flat part 6 '... Gradient part 7 ... Peak part 8 ... Recessed part 9 ... Cam part 10 ... Slit 11 ... Key 12 ... Rotating shaft (pulse motor) 13 ... Cam roller 14 ... … Spring 15… Closure piece

Claims (2)

[Claims] 1. An upper feed path and a lower feed path are divided by dividing an arbitrary position in the middle of the chip feed path, and a lower end opening of the upper feed path and an upper opening of the lower feed path are separated by a set dimension. Installed, the through-hole for temporarily retaining the chip is vertically penetrated, and the rotary shaft is provided between the lower end opening and the upper end opening so that the rotating shaft can be rotated clockwise or counterclockwise by the set angle and the set dimension can be moved forward and backward. The through hole of the rotary shaft is initially connected to the lower end opening of the upper feed passage so as to communicate with the upper end opening of the lower feed passage at the forward position of the rotary shaft. It is made by installing the terminals for inspection at the left and right horizontal positions of the rotating shaft, and the chip is dropped into the through hole of the rotating shaft vertically connected from the upper feed path, and the chip is rotated clockwise or counterclockwise. The horizontal position of the insert in the through hole is stopped and the rotation axis is set by rotating the set angle in the clockwise direction. Dimensional advancement, inspection of polarity etc. by contact between tip and terminal at the same position, to lower feed path of chip where polarity is aligned in a certain direction by clockwise or counterclockwise rotation of the rotating shaft at the same position The chip polarity is measured and the polarity is aligned in a certain direction by repeatedly ejecting, rotating the rotating shaft clockwise or counterclockwise by a set angle, and returning to the original state by retracting the set dimensions. A device for detecting and arranging chip polarities, etc. 2. The chip polarity alignment measuring and aligning device according to claim 1, wherein the rotating shaft vertically penetrates a through hole for temporarily retaining the chip at a tip portion, and a rear end portion of the rotating shaft. The coupling is integrally fixed to the front end of the central axis hole of the coupling and provided integrally with the coupling. The coupling has a flat portion, a gradient portion and a peak portion continuously formed on the outer peripheral surface of the tip portion. A key in which a cam portion having a recessed portion is formed inwardly of the mountain top, and a slit penetrating the central shaft hole is cut behind the cam portion and slidably fitted in the slit. , The rotation shaft of the pulse motor loosely inserted from the rear end of the central shaft hole is fixed, and the rotation shaft of the coupling and the pulse motor fixed to the coupling can move forward and backward by the set dimension with the key in the slit as a guide, and Clockwise or counterclockwise depending on the rotation of the pulse motor Provided freely set angle rotation direction, also established the cam roller in place,
Chip polarity and other inspection alignment device, in which the cam roller is constantly pressed against the cam part by the elastic force of the spring installed between the coupling and the pulse motor.