KR100387313B1 - Nozzle Percepting System - Google Patents

Abstract

The present invention relates to a nozzle recognition device, in the apparatus for automatically recognizing the nozzles stored in the nozzle replacement device in the surface mounting system, a plurality of the nozzle replacement device is arranged in the plane and the load is inserted between each and At the same time, a plurality of contact pins are installed in each plane to connect the nozzle storage unit to which the driving current is supplied to at least one contact pin, and the contact pins to which the driving current is supplied among the plurality of contact pins respectively provided to the nozzle storage unit. In addition to the contact pin to which the driving current is supplied, a nozzle having a plurality of connection grooves formed on the bottom surface of the reflecting plate so that the driving current flows to any one of the other contact pins, and the driving current signals output from the plurality of nozzle storage units, respectively. An A / D converter for receiving a signal and converting it into a digital signal and outputting the digital signal from the A / D converter It is characterized in that it is provided with a controller that receives the signal to recognize the ID of the nozzle seated on the plurality of nozzle storage unit and generates and outputs the nozzle ID signal recognized by the external request.

Description

Nozzle Percepting System

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle recognition device, and in particular, a nozzle recognition device capable of automatically recognizing identification of a nozzle mounted on a nozzle replacement device for storing a nozzle mounted on a printed circuit board by picking up parts from a surface mounting system. It is about.

The surface mount system consists of a base frame, an X-Y gantry, a head unit, a printed circuit board feeder, and a component feeder. The X-Y gantry is assembled on the base frame to move in the X-Y axis direction of the head unit. The head unit is assembled and moved to the X-Y gantry to mount the parts supplied through the parts supply device on the printed circuit board. The printed circuit board on which the component is mounted is transferred to the component mounting working position by the printed circuit board transfer device.

The configuration of a surface mounting system for mounting a component on a printed circuit board transferred to a component mounting working position will be described in more detail with reference to the accompanying drawings. 1 is a perspective view of a conventional surface mounting system. As shown, the surface mounting system 10 includes a base frame 11, an XY gantry 12, a plurality of head units 13 and 14, a printed circuit board transfer device 15 and a component supply device 16. It consists of. The base frame 11 is used to support the overall load of the surface mounting system 10, and the X-Y gantry 12 is assembled to the plane of the base frame 11.

The XY gantry 12 includes a Y-axis stator frame 12a, a Y-axis permanent magnet 12b, a Y-axis mover 12c, an X-axis stator frame 12d, an X-axis permanent magnet 12e, and an X-axis mover It consists of 12f. The Y-axis permanent magnet 12b composed of a plurality of N and S poles is assembled on the inner wall of the Y-axis stator frame 12a, and the X-axis permanent magnet 12e composed of a plurality of N and S poles has an X axis. It is assembled to the inner wall of the stator frame 12d. The Y-axis mover 12c is assembled inside the Y-axis stator frame 12a to which the Y-axis permanent magnet 12b is assembled, and the X-axis mover 12f is provided inside the X-axis stator frame 12d. Are assembled.

The first head unit 13 of the plurality of head units 13 and 14 is assembled in the plane of the X-axis mover 12f. The first head unit 13 assembled in the plane of the X-axis mover 12f is armature coil and X-axis permanent when electric signals are supplied to a plurality of armature coils (not shown) assembled to the X-axis mover 12f. The thrust generated between the magnets 12e moves in the X-axis direction. In order to move the first head unit 13 in the Y-axis direction, the X-axis stator frame 12d is moved in the Y-axis direction.

In order to move the X-axis stator frame 12d in the Y-axis direction, the X-axis stator frame 12d is formed integrally with the Y-axis mover 12c. The Y-axis mover 12c in which the X-axis stator frame 12d is integrally formed is a plurality of armature coils (not shown) assembled inside the Y-axis stator frame 12a and assembled to the Y-axis mover 12c. When the electric signal is supplied, thrust is generated between the electric coil and the Y-axis permanent magnet 12b, and the Y-axis mover 12c moves in the Y-axis direction by this thrust.

As the Y-axis mover 12c moves, the X-axis stator frame 12d integrally formed in the Y-axis mover 12c moves in the Y-axis direction, so that the first head unit 13 moves in the Y-axis direction. Done. Similar to the first head unit 13 moving in the XY axis direction, the second head unit 14 of the plurality of head units 13 and 14 is moved in the XY axis direction in the same manner as the first head unit 13. Will move. The first head unit 13 and the second head unit 14 moving in the X-Y axis direction are mounted on the printed circuit board transferred by the printed circuit board transfer device 15.

A nozzle 20 is provided on the bottom surfaces of the first head unit 13 and the second head unit 14, which picks up the component and moves the printed circuit board to be mounted thereon. The nozzle 20 will be described with reference to FIG. 2 as follows.

As shown in FIG. 2, the nozzle 20 includes a nozzle tip 20a, a reflector 20b, and a holder 20c. The nozzle tip 20a adsorbs the component by the pressure of the air entering and exiting through the holder 20c or places it on the printed circuit board, and the reflector plate 20b determines whether the component adsorbed on the nozzle tip 20a is adsorbed in place. It is used to reflect light generated by a vision device (not shown). The holder 20c forms a socket (not shown) and a connection hole provided on the bottom of the first head unit 13 and the second head unit 14, respectively.

Nozzle 20 is a first head unit 13 and the second head unit 14 is a plurality of nozzles (15) in a state in which a plurality of nozzles are stored in the first nozzle replacement device (not shown) during the component mounting operation using the surface mounting system After moving to the nozzle replacement apparatus, the nozzles required for the surface mounting work are automatically connected to the first head unit 13 and the second head unit 14 according to the work program of the surface mounting system. Here, the plurality of nozzles 20 provided in the nozzle replacement device is mounted in order by the operator in the replacement device according to the surface mounting operation. That is, the first head unit 13 and the second head unit 14 in the state in which the nozzle 20 is mounted on the nozzle replacement device in order according to the shape of the parts in order in accordance with the order of the surface mounting operation Will be replaced.

When a worker mounts a plurality of nozzles to an initial nozzle replacement apparatus for a component mounting operation as in the related art, it is difficult to discriminate with the naked eye due to the miniaturization of the nozzle tip. As such, when the nozzle mounting order is changed due to an operator's mistake in the nozzle replacement device, the nozzle may not pick up the parts correctly, and thus, there may be a problem in that a component mounting error occurs.

An object of the present invention is to recognize the ID given to the nozzle in the nozzle replacement apparatus for storing a plurality of nozzles in the surface mounting system to automatically recognize the nozzle required for the component mounting irrespective of the position mounted on the nozzle replacement apparatus It is to provide a nozzle recognition device that can be mounted on the head unit.

Another object of the present invention is to provide a unique number to the nozzle and to recognize the given ID in the nozzle replacement device to prevent errors in the parts mounting operation due to incorrect mounting of the nozzle.

1 is a perspective view of a surface mount system,

2 is a perspective view of the nozzle shown in FIG.

3 is a block diagram of a nozzle recognition device according to the present invention;

4 is a bottom view of the nozzle according to the present invention;

5 is a perspective view of the nozzle and the nozzle storage shown in FIGS. 3 and 4.

<Code Description of Main Parts of Drawing>

100: nozzle replacement device 101: nozzle storage unit

101a: housing P1 to P6: contact pin

120: nozzle 121: holder

122: reflector 123: nozzle tip

130: A / D converter 140: controller

In order to achieve the above object, the present invention is a plurality of nozzles are arranged in the plane of the replacement device, and the load is inserted between each of the plurality of contact pins are installed in each plane is driven by at least one contact pin. It is connected with the contact pin for supplying the driving current and the contact pin for driving current among the plurality of contact pins respectively provided in the nozzle storage part and the nozzle storage part, which are supplied with current, and driven by any one of the other contact pins. A nozzle having a plurality of connection grooves formed on a bottom surface of the reflector to flow current, an A / D converter which receives drive current signals output from the plurality of nozzle storage units, converts them into digital signals, and outputs them; Receives the digital signal output from the A / D converter and recognizes the identification of the nozzles mounted on the plurality of nozzle storage parts. Provided is a controller for generating and outputting a nozzle ID signal recognized by the sub-request.

In this case, the nozzle storage unit is installed in the plane of the nozzle replacement device for housing the nozzle; And a plurality of contact pins assembled in a plane of the housing and installed to be inserted into the housing when the connection groove formed in the bottom surface of the reflector of the nozzle is not connected.

In addition, the surface of the reflector plate of the nozzle is coated with an insulating material so that the remaining area except for a plurality of connection grooves is insulated upon contact with the contact pins of the nozzle storage part.

Therefore, in the present invention, by recognizing the ID of the plurality of nozzles in the nozzle replacement device in which the nozzles used for mounting the parts on the printed circuit board in the surface mounting system are stored, it is possible to prevent errors in the parts mounting operation due to the incorrect mounting of the nozzles. Can be.

(Example)

Hereinafter, the nozzle recognition apparatus according to the present invention will be described with reference to the accompanying drawings.

3 is a block diagram of a nozzle recognition device according to the present invention, Figure 4 is a bottom view of the nozzle according to the present invention. As shown in the drawing, a plurality of nozzles are arranged in the plane of the replacement device 100, and loads R1, R2,..., R12 are inserted therebetween and a plurality of contact pins P1, P2, Nozzle holders 101, 102, ..., 112, and nozzle storage parts 101, 102, ..., 112, which are provided with ..., P6 and are provided with a drive current supplied to at least one of the contact pins P1, P2, ..., P6. The contact pins P1, P2, ..., P6 to which the driving current is supplied among the plurality of contact pins P1, P2, ..., P6 respectively installed in the contact pins P1, P2, A plurality of connection grooves H1 are formed on the bottom surface of the reflector plate 122 so that the driving current flows to any one of the other contact pins P1, P2, ..., P6, in addition to the ..., P6. A / D converter 10 for receiving driving current signals output from nozzles 120 formed with H2, ..., H6, and a plurality of nozzle storage units 101, 102, ..., 112, and converting them into digital signals ) And A / D converters (13 Receiving a digital signal output from the 0) controller for recognizing the ID of the nozzle 120 seated on the plurality of nozzle storage (101, 102, ..., 112) and generates and outputs the nozzle ID signal recognized by an external request ( 140).

Referring to the configuration and operation of the nozzle recognition device according to the invention in more detail as follows.

The nozzle recognition apparatus of the present invention is largely composed of a plurality of nozzle storage units 101, 102,..., 112, a plurality of nozzles 120, an A / D converter 10, and a controller 140. First, before describing the configuration and operation of the present invention, the reflective plate 122 provided in the plurality of nozzles 120 is formed of a conductive material or a plurality of connection grooves formed in the reflective plate 122 when the conductive plate is not formed of a conductive material. H1, H2, ..., H6) are connected and connected by a conductive material.

Here, the plurality of connecting grooves H1, H2, ..., H6 formed in the reflecting plate 122 shown in FIG. 4 have six connecting grooves H1, H2, ..., for one convenience of the reflection plate 122. Although H6) is shown, it is revealed in advance that it is actually formed of a combination of plural (H1, H2) or plural (H1, H3) and the like.

The size of the nozzle 120 picking up the component is different according to the appearance of the surface mounting component, and in order to recognize where each nozzle 120 is stored in the nozzle replacement apparatus 100, first, the nozzle replacement apparatus 100 is placed on a plane of the nozzle replacement apparatus 100. As shown in FIG. 3, a plurality of nozzle storage parts 101, 102,..., 112 are provided. The plurality of nozzle storage portions 101, 102, ..., 112 shown in FIG. 3 shows an embodiment in which a total of 12 nozzles are arranged in two rows in the horizontal direction. Loads R1, R2, ..., R12 between the nozzle storage portions 101, 102, ..., 112 in order to recognize the IDs of the nozzles 120 seated in the twelve nozzle storage portions 101, 102, ..., 112, respectively. ) Is inserted and installed.

The loads R1, R2, ..., R12 inserted and installed between the nozzle storage portions 101, 102, ..., 112 use resistors and the loads R1, R1, R1, R2, ..., 112 between the nozzle storage portions 101, 102, ..., 112 are used. R2, ..., R12 are inserted and driving power supply Vcc is supplied to each nozzle storage part 101,102, ..., 112. Here, the drive power supply (Vcc) is connected to the first pin (P1) to the nozzle storage unit (101,102, ..., 106), the drive power supply (Vcc) to the pin # 3 (P3) to the nozzle storage unit (107, 102, ..., 112). Is connected.

A plurality of contact pins P1, P2,..., And P6 are provided on the planes of the plurality of nozzle storage units 101, 102,... 112 connected to the driving power source Vcc, respectively. Each of the nozzle storage portions 101, 102, ..., 112 provided with a plurality of contact pins P1, P2, ..., P6 is provided with a housing 101a as shown in FIG. 5 and a nozzle 120 inside the housing 101a. ) Is stored.

The inside of the housing 101a is formed to be hollow so that the nozzle 120 is stored, and a plurality of contact pins P1, P2,..., P6 are installed outside. As shown in FIG. 5, the nozzle 120 to which the plurality of connection grooves H1, H2,..., H6 are connected to each of the contact pins P1, P2,..., And P6 has a holder 121, a reflector 122, and It consists of a nozzle tip 123. The holder 121 is connected to a socket (not shown) provided in the head units 13 and 14 (shown in FIG. 1), and the reflector plate 122 checks an error of adsorption of components adsorbed on the nozzle tip 123. It is used to reflect light emitted from a vision device (not shown).

The bottom surface of the reflecting plate 122 reflecting the light irradiated from the vision device is formed by a combination of a plurality of connection grooves (H1, H2), connection grooves (H1, H3), connection grooves (H2, H3). On the bottom surface of the reflector plate 122 in which the plurality of connection grooves H1, H2, ..., H6 are formed, the nozzle storage portions 101, 102, ..., 112 are located in the remaining areas except the plurality of connection grooves H1, H2, ..., H6. The insulating material 122a is applied so as to be insulated when connecting to the contact pins P1, P2, ..., P6. A plurality of connection grooves H1, H2, ..., H6 formed by combination of (H1, H2), (H1, H3), (H2, H3), etc. by applying the insulating material 122a on the bottom surface of the reflecting plate 122 ), So that the driving current does not flow to each of the plurality of contact pins P1, P2, ..., P6 of the nozzle storage portions 101, 102, ..., 112 that are not connected.

The plurality of contact pins P1, P2,..., And P6 connected to the plurality of connection grooves H1, H2,. When a plurality of connection grooves H1, H2, ..., H6 are connected to any one of the contact pins P1, P2, ..., P6 among the remaining contact pins P1, P2, ..., P6, in addition to P1, P3, the driving current Is output through any one of the electric lines and the loads R1, R2, ..., R12. The driving currents respectively output through the loads R1, R2, ..., R12 become nozzle ID signals ID1, ID2, ... ID10 of the plurality of nozzles 120, respectively.

The nozzle ID signals ID1, ID2, ... ID10 respectively outputted through the loads R1, R2, ..., R12 are received by the A / D converter 10. The A / D converter 10 converts the received nozzle ID signals ID1, ID2, ... ID10 into digital signals and outputs them, and the controller 140 converts the nozzle ID signals ID1, ID2, ... ID10 converted into digital signals. Received at). The controller 140 counts the widths of the pulses of the received nozzle ID signals ID1, ID2, ... ID10 to determine which nozzle 120 is currently in the nozzle storage unit 101 among the plurality of (101, 102, ..., 112). The connection grooves H1 and H6 formed on the bottom surface of the reflecting plate 122 are made to flow in two configurations, that is, a combination of (H1, H2) to (H5, H6) and the like. At this time, when the connection grooves through which the current flows are composed of "H1, H2", the remaining connection grooves "H3, H4, H5, H6" are coated with an insulating material 122a so that no current flows. If the connection grooves through which the current flows are composed of "H1 ~ H3", "H2 ~ H5", and "H4 ~ H6", the remaining connection grooves are coated with insulating material, and the connection grooves where no current flows are "H2, H4, H5, H6". &Quot;, " H1, H3, H4, H6 ", " H1, H2, H3, H5 ". And, when the nozzles 120 respectively configured as described above are seated on the nozzle storage portions 101 to 112, respectively. , The load (R1 ~ R by the flow of current in the A / D converter 130) The voltage generated in 12) is measured. First, when the connection grooves through which the current flows are seated at "104" in the nozzle storage unit, the nozzles 120 formed of "H3, H5" are connected to the connection grooves H3 and H5. When the current flowing through the loads "R3 and R5" is transmitted to the A / D converter, the nozzle ID signal becomes "ID2, ID4" in the A / D converter. At this time, the connection grooves "H3, In the process of passing the current flowing from the H5 "to the A / D converter 130, each of the four loads R4, R3, R2, and R1 passes through each of the voltages. As it is lowered, the A / D converter 130 detects the lowered voltage step by step. As a result, the A / D converter accurately detects the type and position of the nozzle 120. Further, the nozzle storage portions of "107 to 112" may be different from the configuration of the nozzle storage portions of "101 to 106". It is installed on the line.

The controller 140 recognizes IDs of the plurality of nozzles 120 mounted on the plurality of nozzle storage units 101, 102,..., 112, and requests a nozzle ID signal from a main controller (not shown) of the surface mount system. The nozzle ID signal is transmitted to the main controller. After checking the received nozzle ID signal, the main controller transfers the head units 13 and 14 (shown in FIG. 1) to the place where the nozzle 120 on which the component is to be mounted is located on the printed circuit board, and selects the desired nozzle 120. The component can then be mounted on a printed circuit board.

As described above, by recognizing the IDs of the plurality of nozzles in the nozzle replacement apparatus in which the nozzles used to mount the parts on the printed circuit board are stored, it is possible to prevent an error in the component mounting operation due to the incorrect mounting of the nozzles.

As described above, the present invention is an error in the component mounting operation due to incorrect mounting of the nozzle by recognizing the ID of the plurality of nozzles in the nozzle replacement device that the nozzle used for mounting the component on the printed circuit board in the surface mounting system is stored. There is an advantage to prevent.

Claims (3)

In the surface mounting system for automatically recognizing the nozzles stored in the nozzle replacement device, A nozzle storage unit in which a plurality of nozzles are arranged in a plane of the nozzle replacement device and a load is inserted between each nozzle and a plurality of contact pins are installed in each plane to supply driving current to at least one contact pin; On the bottom surface of the reflector so that the driving current flows to any one of the other contact pins in addition to the contact pins to which the driving current is supplied, and the contact pins to which the driving current is supplied among the plurality of contact pins respectively installed in the nozzle storage part. A nozzle in which a plurality of connection grooves are formed; An A / D converter which receives driving current signals respectively output from the plurality of nozzle storage units and converts the driving current signals into digital signals; And Nozzle recognition characterized in that the controller receives the digital signal output from the A / D converter to recognize the ID of the nozzle seated on the plurality of nozzle storage unit and generates and outputs the nozzle ID signal recognized by an external request Device. delete The nozzle recognition apparatus according to claim 1, wherein the surface of the reflector of the nozzle is coated with an insulating material so as to insulate the remaining areas except for a plurality of connection grooves when connected to the contact pins of the nozzle storage part.