KR19980060373U - Parts mounting device - Google Patents

Abstract

The present invention relates to a component mounting apparatus, comprising: a component mounting apparatus having a movement recognition head unit capable of recognizing and correcting a position of a component according to the adsorption and mounting of the component as an image on a robot moving in the XY direction. The recognition head unit captures an image of the part between the left and right adsorption nozzles capable of adsorbing the parts, a vertical drive unit for driving the left and right adsorption nozzles up and down, and the left and right adsorption nozzles respectively. Right angle prism with 45 ° incidence angle and 45 ° reflection angle, which forms a recognition camera that sends to the recognition monitor and is positioned below the left and right adsorption nozzles and the recognition camera to accurately transmit the image of the part. And a prism moving means for allowing the right-angle prism to move left and right without interference with respect to the vertical movement of the suction nozzles. And it characterized in that.

Therefore, the present invention can perfectly match the tolerance for the angle of the optical path by the right-angle prism can not only improve the positioning accuracy further, but also increase the productivity by reducing the machining and assembly errors.

Description

Parts mounting device

The present invention relates to a component mounting apparatus, and more particularly, to a component mounting apparatus that can more accurately recognize the image of the electronic component entered through the optical path to reduce the mounting position error of the component.

As a conventional embodiment, Fig. 1 shows a schematic diagram of a component mounting apparatus disclosed in Japanese Patent Laid-Open No. Hei 4-107986.

As shown in FIG. 1, the conventional apparatus is provided with a suction nozzle unit 2 that sucks the electronic component 1 to be movable up and down, and a plurality of recognition cameras 3 are located on one side of the suction nozzle unit 2. (4) is installed to recognize the image of the component (1) in accordance with the irradiation of the light source (5).

A reflector 6 inclined at an angle of 45 ° is attached and fixed to the mounting plate 13 under the suction nozzle unit 2, and the illumination light emitted from the light source 5 is reflected on the reflector 6. And enters the recognition cameras 3 and 4.

Here, the recognition camera (3) (4) is mounted to the cylinder (7), is installed so as to move left and right, inside the cylinder (7) is inclined 45 ° opposite to the inclination direction of the reflector (6) Reflectors 8, 9 and 10 are incorporated.

In addition, the reflector 6 is deflected without mutual interference with the vertical movement of the nozzle unit 2.

In such a conventional apparatus, the suction nozzle unit 2 moves up and down by a slide crank mechanism (not shown) to suck the electronic component 1 from the component supply unit 11 and mount it on the substrate 12. At this time, the illumination light irradiated from the light source 5 is recognized through the optical path incident from the reflector 6 below the nozzle part 2 to the other reflector 8, 9, 10 via the electronic component 1. The image of the component 1 is picked up according to the degree of observation required by the cameras 3 and 4.

In the prior art, the reflectors 6, 8, 9 and 10 constituting the optical path must be fixed while maintaining an inclination of 45 ° accurately. In particular, in the mutually opposing reflectors 6 and 8, For example, when a positioning error of 0.1 mm occurs, a component recognition error of 0.2 mm, which is twice that of the same, occurs.

However, the reflector 6 should be attached to the mounting plate 13, so that the assembly position is accurately determined when component machining errors such as dimensions and angles, assembly errors, and relative errors between the two reflectors 6 and 8 are accumulated. There is a difficult problem.

In addition, the adjustment and measurement of angles and dimensions after assembly are very difficult, which makes it difficult to secure the positioning accuracy and lacks productivity due to the difficulty of assembly and adjustment. There is also a problem that must be restarted from the initial assembly stage.

Therefore, the present invention was devised to solve the above-described problems, and an object of the present invention is to secure a high precision positioning degree, and to facilitate the assembly and adjustment of equipment, and to improve the productivity of the component mounting device. To provide.

The component mounting apparatus according to the present invention for achieving the above object is a component mounting having a moving recognition head that can recognize and correct the position of the component according to the adsorption and mounting of the component to the robot moving in the XY direction as an image In the apparatus, the movement recognition head portion between the left and right adsorption nozzle unit capable of adsorbing the component, the vertical drive unit for driving the left and right adsorption nozzle unit up and down respectively, and between the left and right adsorption nozzle unit 45 ° angle of incidence and 45 °, forming a recognition camera that captures the image of the part and sends it to the recognition monitor, and an optical path positioned below the left and right suction nozzles and the recognition camera to accurately transmit the image of the part. A right angle prism having a reflection angle of and a right angle prism to move left and right without interference with respect to the vertical movement of the suction nozzles. And prism movement means.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view schematically showing the construction and operation of a conventional component mounting apparatus.

Figure 2 is a perspective view schematically showing the configuration of the component mounting apparatus according to the present invention.

3 is a view schematically showing an operating state of a component mounting apparatus according to the present invention.

Figure 4 is a schematic view showing the configuration and operation of the component mounting apparatus according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

30: electronic component, 42: left suction nozzle portion,

44: right side suction nozzle portion, 52, 54: up and down drive portion,

60: recognition camera, 70: right angle prism,

80, 800: prism moving means, 82, 820: guide member,

84: drive belt, 86a, 86b, 86c: support member,

88, 880: drive motor, 89: timing pulley,

100: movement recognition head portion, 200: robot,

300: recognition monitor, 830: connecting rod,

842, 844: hinge pins, 860: wheels.

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

2 is a perspective view schematically showing the configuration of a component mounting apparatus according to the present invention.

In the drawing, the movement recognition head unit 100 is mounted on the robot 200 moving in the XY direction, and the movement recognition head unit 100 may adsorb the electronic component 30 on the head base 20. The left side suction nozzle part 42 and the right side suction nozzle part 44 are attached, and the recognition camera 60 is provided between the left and right side suction nozzle parts 42 and 44.

The left and right suction nozzle parts 42 and 44 are coupled to the upper and lower driving parts 52 and 54 so as to slide up and down, respectively, and the recognition camera 60 is connected to the recognition monitor 300. It is combined to reproduce the image of the.

In particular, a right angle prism 70 is formed below the left and right suction nozzles 42 and 44 and the recognition camera 60, and the right angle prism 70 has angles of incidence and reflection angles. 45 degrees each, consisting of a V or an inverted triangle whose sum is 90 degrees.

Of course, the left and right suction nozzles 42 and 44 or the lower ends of the recognition camera 60 are provided with lighting units that are not shown to illuminate the electronic component 30, respectively.

On the other hand, reference numeral 80 denotes a prism moving means, which allows the prism 70 to be moved to the left and right without interference with respect to the vertical movement of the left and right suction nozzle parts 42 and 44.

That is, the prism 70 is coupled to the horizontal sliding motion on the guide member 82, and is coupled to the drive belt 84 by a connecting bracket (not shown).

The drive belt 84 is supported by the support members 86a, 86b and 86c so as to maintain a constant movement path, and the drive belt 84 is attached to the distal end of the drive motor 88. Coupled to the pulley 89.

Moreover, FIG. 4 shows another embodiment of the present invention, and includes a right angle prism 70 as a reflector of the electronic component 30 and a configuration and arrangement of adsorption nozzles 42 and 44 and a recognition camera 60. Is the same as the embodiment described above, but the prism moving means 800 for causing the right-angle prism 70 to reciprocally slide horizontally is different from each other.

That is, the prism moving means 800 is coupled to the right angle prism 70 so as to horizontally slide on the guide member 820, and is coupled by a hinge pin 842 to one side of the connecting rod 830. . The other side of the connecting rod 830 is also slidably coupled by a wheel 860 mounted on the shaft 882 of the drive motor 880 and another hinge pin 884.

The overall operation of the component mounting apparatus according to the present invention provided as described above will be described with reference to FIGS. 3 and 4.

When the left side adsorption nozzle unit 42 descends and then adsorbs the electronic component 30 supplied to the component supply unit (not shown), the drive motor 88 rotates 180 degrees counterclockwise. In this case, the right angle prism 70, which has been avoided on the right side suction nozzle part 44, is moved toward the left side suction nozzle 22, and the electronic component 30 sucked through the prism 70 is transferred to the recognition camera 60. Make it aware.

At this time, when the drive belt 82 engaged with the timing pulley 89 is supported by the support members 86a, 86b and 86c in accordance with the rotation of the drive motor 88, the drive belt 82 rotates in one direction. As the 82 is driven, the rectangular prism 70 also slides horizontally on the guide member 82. At the same time, the right suction nozzle 44 lowers and absorbs the electronic component 30 supplied by the component supply unit (not shown) by using the gap in which the right-angle prism 70 is deviated, and then rises again.

On the other hand, the right angle prism 70 that has completed the recognition of the electronic component 30 adsorbed to the left suction nozzle portion 42 is again rotated by 180 ° clockwise in the right suction nozzle portion 44. ), The robot 200 transfers the entire movement recognizing head unit 100 to a mounting position of a printed circuit board (not shown) which has already been determined. At this time, the electronic component 30 adsorbed to the right suction nozzle portion 44 during transfer is recognized by the recognition camera 60, and at the same time, the left suction nozzle portion 42 mounts the component 30.

Thereafter, when the left mounting is completed, the robot 200 transfers the center of the right suction nozzle unit 44 to the next mounting position, and accurately mounts the electronic component 30 at the desired position by the correction data. At this time, the incidence angle of 45 ° and the reflection angle of 45 ° are accurately maintained by the right angle prism 70, so that the electronic component 11 can be accurately recognized.

In addition, in the other embodiment illustrated in FIG. 4, the mounting and recognition method of the electronic component 30 is the same as in the above-described embodiment, but the right-angle prism 70 is coupled to the shaft 882 of the driving motor 880. The slide crank structure is horizontally reciprocated on the guide member 820 by receiving power by the connecting rod 830 according to the forward and reverse rotation of the wheel 860.

Of course, the present invention is not limited to mounting only the electronic component as illustrated in the present embodiment, and it is natural that the electronic component can be used in an apparatus that recognizes and processes optically at high speed and high accuracy.

According to the present invention described above, the tolerance for the angle of the optical path can be perfectly matched by the right-angle prism, so that not only can the positioning accuracy be further improved, but also the machining and assembly errors can be reduced to increase the productivity.

Claims (4)

A component mounting apparatus having a movement recognition head portion capable of recognizing and correcting a position of a component according to the adsorption and mounting of the component as an image on a robot moving in the XY direction, wherein the movement recognition head portion is capable of absorbing the component. A left and right suction nozzle unit, a vertical drive unit for driving the left and right suction nozzle units up and down, respectively, a recognition camera which captures an image of a part between the left and right suction nozzle units, and sends the image to a recognition monitor, and the left A right angle prism having an angle of incidence of 45 ° and a reflection angle of 45 °, positioned under the right side suction nozzle and the recognition camera to form an optical path to accurately transmit the image of the part, And a prism movement means for allowing movement to the left and right without interference with respect to the movement. The method of claim 1, wherein the prism movement means is a guide member for guiding the prism to move horizontally, a drive belt coupled to interlock with the prism, and can maintain the movement direction of the drive belt constant And a support member for driving the drive belt in engagement with the timing pulley. According to claim 1, wherein the prism moving means is a sliding guide reciprocating the prism by a guide member for guiding the prism to move horizontally, a wheel that rotates in accordance with the operation of the drive means, and a hinge pin for the rotational force of the wheel Component mounting apparatus comprising a connecting rod for transmitting so that. 4. The component mounting apparatus according to claim 2 or 3, wherein the driving means is a motor capable of forward and reverse rotation.