JP3310036B2 - Component verifying device for chip mounter and method of cleaning component verifying device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention measures the characteristics of components.
The present invention relates to a component verifying device for a chip mounter and a method for cleaning the component verifying device.

[0002]

2. Description of the Related Art There is known an electronic element automatic mounting apparatus called a chip mounter which automatically installs electronic elements such as diodes, resistors and capacitors at predetermined positions on a substrate. This chip mounter has the electrical characteristics of electronic devices, such as resistance, capacitor,
A verification device is provided for measuring and checking diode polarity and the like in advance before mounting the electronic element on a substrate. This verification device moves the contacts in a direction approaching each other when measuring the characteristics of the pair of contacts and the components so that the components are brought into contact between the contacts. It is composed of a contact moving means for moving the parts in the separating direction, and a characteristic measuring device for measuring the characteristic of the part based on a signal from the contact holding the part.

[0003]

When the verifying device is used, dirt adheres to the contact, and if left unattended, the characteristic check cannot be performed accurately due to the dirt. . Therefore, although workers etc. clean using absorbent cotton and cotton swabs, etc., they are not performed regularly because they are performed by humans, and troublesome cleaning is omitted. However, there is a problem that reliability is reduced.

Accordingly, a first aspect of the present invention is to provide a component verifying device for a chip mounter which enables cleaning of a contact to be automatically performed at an arbitrary time and has improved reliability in characteristic measurement. An object of the present invention is to provide a method of cleaning a component verification device.

According to a second aspect of the present invention, the cleaning of the contact can be automatically performed at an arbitrary time, and the gripping force of the contact at the time of cleaning can be optimally set. further enhanced Ji reliability of more reliably can perform become characteristic measurement than iNVENTION
An object of the present invention is to provide a component verifying device of a top mounter and a method of cleaning the component verifying device.

[0006]

Means for Solving the Problems A chip mouse according to the first invention is provided.
In order to achieve the above-mentioned object, a part verification device of the intermediary device, in measuring a characteristic of a part, moves the contacts in a direction approaching each other to bring the part into contact between the contacts, When the characteristic measurement of the component is completed, a contact moving unit that moves the contact in a direction away from each other, and a characteristic measuring device that measures the characteristic of the component by a signal from the contact that has contacted the component. A chip mounter component verifying device comprising: a cleaning pad for cleaning a contact surface of the contact, cleaning pad moving means for moving the cleaning pad between the contacts, and a cleaning start signal. A cleaning start signal generating means for generating the cleaning start signal, and A controller for controlling the operation of the child moving means and the cleaning pad moving means ,
The moving force of the contact moving means is used to clean the contact.
Switchable between time and when measuring the characteristics of the parts
Means .

According to a second aspect of the present invention, there is provided a method for cleaning a component verifying device of a chip mounter , comprising: a pair of contacts; A contact moving means for moving in a direction of approach, a cleaning pad for cleaning a contact surface of the contact, a cleaning pad moving means for moving the cleaning pad between the contacts, and a cleaning start Chippuma with a cleaning start signal generating means for generating a signal, the
In the cleaning method of the component verification device of the Unter , the following operation is performed by receiving the cleaning start signal. Moving the cleaning pad between the contacts ; disconnecting the contacts from the time of measuring the characteristics of the component;
Moving the cleaning pad in a direction approaching each other with the changed moving force to contact the cleaning pad, further moving the cleaning pad forward or backward,
And when the contact is cleaned by the cleaning pad, the contact is retracted to the original position.

[0008]

The chip in the first and second means is provided.
According to the component verifying device of the mounter and the cleaning method of the verifying device, when the controller 10 receives the cleaning start signal from the cleaning start signal generating means 7, the cleaning pad 4 (44) is moved by the cleaning pad moving means 5 (14). 1 and the contacts 1 are moved by the contact moving means 2 in directions approaching each other, and the cleaning pads 4 (4
4) is held between the contacts 1. Cleaning pad 4
In step (44), the gripping surface of the contact 1 is further advanced or retracted in that state, and the contact 1 is then retracted to the original standby position. Thus, the cleaning of the contact 1 is automatically performed at an arbitrary time.

According to the verifying device of the second means, when the controller 10 receives the cleaning start signal from the cleaning start signal generating means 7, the cleaning pad 4 (44) is moved by the cleaning pad moving means 5 (14). The contact pad 1 (44) is moved between the contacts 1 by the contact moving means 2 with a moving force at the time of cleaning different from that at the time of the characteristic measurement. Is gripped with a gripping force different from that at the time of the characteristic measurement. In this state, the cleaning pad 4 (44) further advances or retracts to clean the grip surface of the contact 1, and then the contact 1 retreats to the original standby position. As described above, the cleaning of the contact 1 is automatically performed at an arbitrary time, and the gripping force at the time of cleaning the contact 1 can be optimally set.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a schematic configuration diagram of a verifying device and its peripheral portion showing an embodiment of the present invention, and the verifying device is installed at a predetermined position on a chip mounter. In the figure, reference numeral 13 denotes an electronic element such as a diode, a resistor, and a capacitor mounted on an electronic element supply device (not shown) on the chip mounter. Reference numeral 14 denotes a drive source (not shown) in the X and Y directions on the chip mounter. The movable head 15 has various types of nozzles 16,
1 shows an auto tool changer equipped with 16a and 16b. When a substrate (not shown) is transported to a predetermined position on a chip mounter, an optimum nozzle according to the size of the electronic element 13 is selected from the auto tool changer 15. Then, the electronic device 13 is mounted on the tip of the head 14 (nozzle 16 in the figure). The electronic device 13 mounted on the electronic device supply device is vacuum-adsorbed by the nozzle 16 and mounted to a predetermined position on the substrate. Thirteen substrates are mounted.

In the vicinity of the auto-tool changer 15, verification for measuring and checking in advance electrical characteristics of the electronic element 13, such as resistance value, capacitor capacity, diode polarity, etc., before mounting the electronic element 13 on a substrate. A device is provided. This verification device will be described below. Reference numeral 1 denotes a pair of contacts 1, 1, which are fixed to the tips of the sliders 2a, 2a, respectively. Linear guides (not shown) are formed on the surfaces of the sliders 2a, 2a on the base 17 side and the base 17, respectively, and the sliders 2a, 2a are opposed to the contacts 1, 1 in the direction in which the contacts 1, 1 face (indicated by arrows in the drawing). (A, B directions). Links 2 are provided at the ends of the sliders 2a, 2a.
The ends of b and 2b are rotatably mounted by pins 2c and 2c, respectively, and the ends of the links 2b and 2b are rotatably mounted on the link 2d by pins 2e. A linear guide (not shown) is formed on the surface of the link 2d on the base 17 side and on the base 17, and the link 2d is slidable in the vertical direction (the direction of arrow C in the figure). The link 2d is fixed to a piston portion 2g slidable in the vertical direction of a double-acting air cylinder 2f, and the double-acting air cylinder 2f is fixed to a base 17 via a bracket 2h. Therefore, when the piston portion 2g of the double acting air cylinder 2f rises, the link 2d also rises, and the links 2b, 2b are connected to the pins 2e.
Is pivoted in the opening direction with the fulcrum as a fulcrum, and the sliders 2a, 2a and the contacts 1, 1 are separated from each other (indicated by arrow A in the drawing).
Direction). Double acting air cylinder 2
When the piston portion 2g of f descends, the link 2d also descends,
The links 2b, 2b rotate in the closing direction with the pin 2e as a fulcrum, and the sliders 2a, 2a and the contacts 1, 1 move in directions approaching each other (in the direction of arrow B in the figure).

An air passage 2 for venting and exhausting the double-acting air cylinder 2f is provided upstream of the double-acting air cylinder 2f (toward the air supply source 2p in the figure).
i and 2j are connected respectively. The air passage 2i is connected to the piston 2g when the piston 2g is lifted.
Air is supplied to the air passages 2i and 2j at the time of lowering of the speed g. Speed controllers 2k and 2m are interposed in the air passages 2i and 2j, respectively. Can be changed to appropriate values. A 5-port solenoid valve 2n is connected upstream of the air passages 2i and 2j.
Is supplied to the air passages 2i and 2j in accordance with a signal given to the air passage, and the air is exhausted from the air passages 2i and 2j.

A switching solenoid valve 11a composed of a four-way valve is connected upstream of the 5-port solenoid valve 2n. An air supply source for supplying air at a constant pressure is provided upstream of the solenoid valve 11a. Pressure reducing valves 11b and 11c for reducing the pressure of the air from 2p to different pressures are connected respectively. The pressure reducing valve 11b is used to hold the contact force of the contact 1 during the characteristic measurement, that is, the piston portion 2g of the double-acting air cylinder 2f.
The pressure of the pressure reducing valve 11c is adjusted so that the gripping force of the contact 1 at the time of cleaning is optimized, and the pressure of the pressure reducing valve 11c is optimized between the time of cleaning and the time of characteristic measurement by the electromagnetic valve 11a. The air pressure supplied to the double-acting air cylinder 2f can be selectively switched.
Here, in the present embodiment, the pressure (the pressure on the side of the pressure reducing valve 11b) at the time of the characteristic measurement is such that when the contact 1 grips the electronic element 13, the electronic element 13 is not damaged and the electronic element 13 is not affected. 13 is set to a pressure that does not drop off from the contact 1, and the pressure during cleaning (the pressure on the pressure reducing valve 11c side) is set to be higher than the pressure during measurement of this characteristic (to be described in detail later). .

A characteristic measuring device 3 is connected to the contacts 1, 1, and by contacting the electronic element 13 between the contacts 1, 1, the electrical characteristics of the electronic element 13 are measured. Can be measured and checked.

Here, the contacts 1 and 2 of the verification device
A single-acting air cylinder 5a as a cleaning-pad moving means is provided substantially directly below the space between the first and second fixing pads 1. The single-acting air cylinder 5a is fixed to the base 17. The piston portion 5b of the single-acting air cylinder 5a is slidable in a direction perpendicular to the moving direction of the contact 1 (the direction indicated by arrows A and B in the drawing). Is provided with a cleaning pad 4 made of a material such as sponge or felt. An air passage 5c for venting the air to the single-acting air cylinder 5a and exhausting the air from the single-acting air cylinder 5a is connected to the upstream side of the single-acting air cylinder 5a (toward the air supply source 5f in the figure). ing. A speed controller 5d is interposed in the air passage 5c so that the lowering speed of the piston portion 5b can be set to an appropriate value by the speed controller 5d. A cleaning pad solenoid valve 5e is provided upstream of the air passage 5c.
An air supply source 5f for supplying air of a constant pressure is connected to the upstream side of the cleaning pad solenoid valve 5e. When the cleaning pad solenoid valve 5e is turned on, air of a constant pressure is supplied to the air passage 5c. When supplied and turned off, the air supplied from the air passage 5c is exhausted.

Further, the verifying device is provided with a cleaning start signal generating means 7 for generating a cleaning start signal in response to a command for instructing verification.
The controller 10 sends control signals to the switching electromagnetic valve 11a, the 5-port electromagnetic valve 2n, and the cleaning pad electromagnetic valve 5e in response to a signal from the cleaning start signal generating means 7. This controller 10
Is a microcomputer configured to achieve the same functions as the switching control means 12, the cleaning pad control means 8, and the contact control means 9 in FIG. In FIG. 1, solid arrows indicate electric signal lines, dashed lines indicate lines for transmitting mechanical operations, and dotted lines indicate blocks and electric signal lines required for the second invention. I have. A program capable of achieving the above functions is written in the ROM in the controller 10, and each set value and data table are stored and processed. FIG. 3 shows a flowchart of the program written in the ROM.

The operation of the apparatus will be described according to the following program.
An embodiment of the method according to the invention will be described. When the program starts, in step 1, the electronic device 1
In step 2, it is determined whether or not the mount command includes a command for instructing verification. If not, this flow is executed to execute another operation. Then, the process proceeds to another routine. In some cases, the process proceeds to step 3, and in step 3, the cleaning operation is started before the verify operation. This cleaning operation is performed by sending a signal for switching to the moving force at the time of cleaning to the switching solenoid valve 11a, a signal for turning on the air passage 2j to the 5-port solenoid valve 2n, and an ON signal to the cleaning pad solenoid valve 5e. Will be Here, the switching solenoid valve 11
When a receives the signal for switching to the moving force at the time of cleaning, the air on the pressure reducing valve 11c side is selected, and the 5-port solenoid valve 2n receives the optimal pressure reducing valve 1 as the cleaning pressure.
The air on the 1c side is supplied. At about the same time, the 5-port solenoid valve 2n receives a signal to turn on the air passage 2j, so that the air from the switching solenoid valve 11a is throttled by the speed controller 2m and sent to the double-acting air cylinder 2f via the air passage 2j. The piston 2g slowly descends, and the link 2d descends due to the lowering operation of the piston 2g, and the links 2b, 2b
e in the closing direction about the fulcrum, the sliders 2a, 2
a and the contacts 1 and 1 move in directions approaching each other (the direction of arrow B in the figure). On the other hand, since the cleaning pad solenoid valve 5e receives the ON signal in parallel with these operations, the air from the air supply source 5f is not throttled by the speed controller 5d and is sent to the single-acting air cylinder 5a via the air passage 5c. The piston 5b is supplied quickly and rises quickly, and the lifting operation of the piston 5b also raises the cleaning pad 4 by the stroke. Then, the cleaning pad 4 is gripped between the contacts 1 and 1, the cleaning pad solenoid valve 5e receives the off signal, and the air supplied to the single-acting air cylinder 5a is throttled and released by the speed controller 5d. ,
As a result, the cleaning pad 4 descends slowly,
Retract to the original position. The cleaning surface of the contact pad 1 is cleaned by the lowering operation of the cleaning pad 4 held between the contact pads 1 and 1. When this cleaning operation is performed, the 5-port solenoid valve 2n
Receives a signal to turn on the air passage 2i, the air from the switching solenoid valve 11a is throttled by the speed controller 2k, and the double-acting air cylinder 2 is passed through the air passage 2i.
f, the piston 2g slowly rises, and the contacts 1, 1 move in directions away from each other (in the direction of arrow A in the figure). The operation timing of this series of cleaning operations is controlled by a signal from a timer or a sensor (not shown).

As described above, when the cleaning operation is performed in step 3, the process proceeds to step 4, and in step 4
, A verify operation is started. This verifying operation is exactly the same as the conventional verifying operation. In this verifying operation, a signal for switching to the moving force at the time of verification is sent to the switching solenoid valve 11a, and a signal for turning on the air passage 2j is sent to the 5-port solenoid valve 2n. No signal is sent to the cleaning pad solenoid valve 5e. Here, when the switching electromagnetic valve 11a receives a signal for switching to the moving force at the time of verification, the pressure reducing valve 1
The air on the side 1b is selected, and the air on the side of the pressure reducing valve 11b is supplied to the 5-port solenoid valve 2n as an optimal pressure at the time of verification. The subsequent operations of the contacts 1 and 1 are the same as those at the time of the above-described cleaning, and thus description thereof will be omitted.

On the other hand, when a command to perform verification is received,
An optimal nozzle according to the size of the electronic element 13 is selected from the auto tool changer 15 and mounted on the tip of the head 14, and the nozzle 16 vacuum-adsorbs the electronic element 13 mounted on the electronic element supply device. Element 13
Is supplied between the contacts 1 and 1 and is gripped between the contacts 1 and 1. Then, an electric signal is sent to the characteristic measuring device 3, and the electric characteristics of the electronic element 13 are measured and checked. The characteristic check of the verification device is set so as to be performed only for the first electronic element mounted on the electronic element supply device or every time the electronic element is mounted.

When the verify operation is completed in this way, the process proceeds to step 5, where the electronic element 1
3 is mounted on the substrate. This mounting operation is performed by moving the verified electronic element 13 to a predetermined position on the substrate and mounting it on the substrate. When the mounting operation in step 5 is completed, this flow ends.

In this embodiment, the cleaning pad 4 is made of a material such as sponge or felt, and the pressure during cleaning (pressure on the pressure reducing valve 11c side) is changed to the pressure during characteristic measurement (pressure on the pressure reducing valve 11b side). Pressure), the cleaning pad 4 can be moved so as to rub against the gripping surface of the contact 1 to reliably clean the gripping surface. When the pad 4 is made of a material having a large coefficient of friction, such as a file, for example, the pressure at the time of cleaning is changed to the pressure at the time of characteristic measurement in order to smoothly move the cleaning pad 4 while being held by the contact 1. It is necessary to set it to be rather low.

As described above, according to the present embodiment, the contact 1
Cleaning is automatically performed before the verify operation, so that the cleaning can be performed regularly without forgetting, and the reliability of the characteristic measurement is improved. Moreover, in the present embodiment, the gripping force is switched between the cleaning and the verification by the electromagnetic valve 11a, that is, the gripping force of the contact 1 at the time of cleaning is optimally set by the switching electromagnetic valve 11a. Therefore, the contact 1 can be reliably cleaned.

The cleaning pad 4 of the above embodiment is used.
May be configured to be attachable to the head 14, and the head 14 may be used as a cleaning pad moving unit. That is, the cleaning pad 44 as shown in FIG.
5, when a command for verifying is received, a cleaning pad 44 is selectively mounted on the head 14 from the auto tool changer 15 before the verify operation, and the cleaning pad 44 is vertically moved to contact the contact 1. Then, the cleaning pad 44 is moved by moving the cleaning head 44 forward by further moving the head 14 to clean the gripping surface, so that the cleaning surface can be appropriately repeated. With this configuration, the single-acting air cylinder 5a having the piston portion 5b, the air passage 5c, the speed controller 5d, the cleaning pad solenoid valve 5e, and the air supply source 5f become unnecessary, so that cleaning can be performed at low cost. There is an effect that the mechanism 6 can be configured.

Incidentally, the switching solenoid valve 11a, the pressure reducing valve 1
It is also possible to directly supply the air from the air supply source 2p to the 5-port solenoid valve 2n without using each of 1b and 11c, that is, to make the air pressure for cleaning the same as the air pressure for characteristic measurement. Even with such a configuration, the cleaning of the contact 1 can be automatically performed before the verification operation is performed, so that the reliability of the characteristic measurement can be improved.

Although the invention made by the inventor has been specifically described based on the embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the invention. Needless to say, for example, in the above embodiment, a cleaning start signal is generated by a command for instructing verification, but this cleaning start signal is generated when the manual switch is turned on or when the chip mounter body is turned on. It is also possible to make it occur when the power is turned on.

In the above embodiment, the contact 1 is moved by the double-acting air cylinder 2f. However, the contact 1 can be moved by a single-acting air cylinder instead of the double-acting air cylinder 2f. Alternatively, the switching between the air pressure at the time of cleaning and the air pressure at the time of verification may be performed by a regulator having two solenoid valves and two types of air pressures.

In the above embodiment, the contact 1 is moved by the link mechanism and driven by air. However, the drive by the rack and pinion is performed by a rotary cylinder or a motor. When a motor is used, the switching of the moving force can be performed by torque control or the like using current. Further, a toggle method may be used.

In the above embodiment, the cleaning pad 4 is moved by the air cylinder. However, the cleaning pad 4 can be moved by means other than air.

The present invention is applicable not only to a verifying device for measuring and checking the electrical characteristics of an electronic element,
The present invention is applicable to all devices for measuring the characteristics of an article.

[0030]

As described above, according to the first and second aspects of the present invention,
According to the component verifying device of the chip mounter and the cleaning method of the verifying device, the contact can be automatically cleaned at an arbitrary time, so that the reliability of the characteristic measurement can be improved. Also the first
Verification device for chip mounter according to the second aspect of the present invention
According to the method of cleaning the verifying device, the cleaning of the contact can be automatically performed at an arbitrary time, and the gripping force of the contact at the time of cleaning can be optimally set so that the cleaning can be reliably performed. Therefore, the reliability of the characteristic measurement can be further improved.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of the present invention.

FIG. 2 is a schematic configuration diagram of a verifying device and a peripheral portion thereof according to an embodiment of the present invention.

FIG. 3 is a flowchart of a program stored in a controller in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Contact 2 Contact moving means 3 Characteristic measuring device 4,44 Cleaning pad 5,14 Cleaning pad moving means 6 Cleaning mechanism 7 Cleaning start signal generating means 8 Cleaning pad control means 9 Contact control means 10 Controller 11 Switching means 12 Switching Control means 13 parts

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G01R 31/00 G01R 31/26 G01R 1/06

Claims (2)

(57) [Claims] When measuring the characteristics of a pair of contacts and a component, the contacts are moved in directions approaching each other to bring the component into contact between the contacts, and when the characteristic measurement of the component is completed, A chip moving device for moving the contacts in directions away from each other; and a characteristic measuring device for measuring characteristics of the component based on a signal from the contact in contact with the component.
In the component verification apparatus centers, a cleaning pad for cleaning the contact surfaces of the contacts, the cleaning pad moving means for the cleaning pad is moved toward between the contact children, cleaning starts to generate a cleaning start signal a signal generating means, for receiving the cleaning start signal, and a controller for controlling the operation of the contact moving means and the cleaning pad moving means, the moving force of the contact moving means, cleaning of the contactor
Switchable between switching and when measuring the characteristics of the parts
And a replacement unit . A component verifying device for a chip mounter, comprising: 2. A pair of contacts, contact moving means for moving the contacts in directions approaching each other when cleaning the contacts, and a cleaning pad for cleaning a contact surface of the contacts. If, chip, comprising: a cleaning pad moving means for the cleaning pad is moved toward between the contact child, a cleaning start signal generating means for generating a cleaning start signal, the
Chips in the cleaning method of the component verification apparatus Pumaunta, by receiving the cleaning start signal, characterized in that so as to perform the following operations
How to clean the mounter's parts verification device.
Moving the cleaning pad between the contacts; moving the contacts from the time of measuring the characteristics of the component;
When the cleaning pad is moved forward or backward by moving the cleaning pad in a direction approaching each other by force, and the cleaning pad is further moved forward or backward, and the cleaning pad is used to clean the contact, the contact is removed. Retract to its original position.