JP2019038653A - Component-suction conveyor - Google Patents

Abstract

To provide a component-suction conveyor capable of suppressing inertial force and thermal deformation and of improving the processing number of electronic components per unit time by increasing the conveyance speed.SOLUTION: A component-suction conveyor has a rotor part that has a substantially disk-like outer shape and a plurality of arm fitting parts provided along a circumferential direction and is to be rotated by a motor, and a plurality of arm parts respectively having arm support parts attached to the arm fitting parts and rotatable together with the rotor part and suction parts having suction heads capable of sucking electronic components and provided vertically movable with respect to the arm support parts, in which at least one of the rotor part and the arm support part consists of carbon-fiber plastic.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a component sucking and conveying machine that sucks and conveys electronic components such as chip components in a circumferential direction.

  In an inspection process or packaging of an electronic component such as a chip component, a component sucking and conveying machine that sucks and conveys the electronic component in the circumferential direction is used. In the component suction and transport machine that transports in the circumferential direction, a plurality of devices are arranged at predetermined positions along the circumferential direction of the component suction device, and the electronic components to be transported are from the devices disposed in the circumferential direction. Then, a predetermined process is performed (see Patent Document 1).

JP 2012-116529 A

  However, the conventional component suction and conveyance machine has a problem that it is difficult to increase the component speed and increase the number of electronic components processed per unit time because the inertial force acting on the apparatus is large. Also, when trying to improve the number of electronic components processed per unit time by increasing the component speed, the support member included in the device is deformed due to the influence of heat generated by the motor, which is the power for rotation, and the electronic components are transported. There is a problem that the positional accuracy is lowered.

  The present invention is made in view of such a situation, and is capable of suppressing inertia force and thermal deformation, and is capable of suppressing the number of electronic components processed per unit time by increasing the component conveyance speed. It aims at providing a conveyance machine.

The component suction conveyance machine according to the present invention is
A rotor portion having a substantially disk-like outer shape, having a plurality of arm mounting portions provided along the circumferential direction, and rotated by a motor;
An arm support portion which is attached to the arm attachment portion and can rotate together with the rotor portion; and a component suction portion which has a suction head capable of sucking electronic components and is provided so as to be vertically movable with respect to the arm support portion; And a plurality of arm portions each having
At least one of the rotor part and the arm support part is made of carbon fiber plastic.

  In the component adsorption machine according to the present invention, at least one of the rotor part and the arm support part is made of carbon fiber plastic. The rotor part and the arm support part made of carbon fiber plastic are lighter than the conventional rotor part or arm support part made of metal or alloy such as aluminum, and such a component adsorber is generated at the time of rotation. The inertial force can be suppressed, and even if the same motor is used, it can be driven at a higher speed. Carbon fiber plastic also has a smaller coefficient of thermal expansion and higher rigidity than the materials that make up the conventional rotor and arm support parts in terms of the amount of thermal deformation. It is possible to suppress deformation caused by inertia load that sometimes occurs.

  For example, the carbon fiber plastic may be pitch-based.

  The carbon fiber plastic constituting the rotor part and the arm support part is not particularly limited. For example, a PAN-based or pitch-based carbon fiber plastic can be adopted, but it is preferable to use a pitch-based carbon fiber plastic. Since pitch-based carbon fiber plastics are particularly high in rigidity, deformation can be suitably suppressed by using a pitch-based carbon fiber plastic rotor portion and arm support portion.

The arm support portion may be made of carbon fiber plastic,
The suction head may be formed with a nozzle made of an insulating material that insulates the electronic component from the arm support portion.

  In such a component sucking and conveying machine, the nozzle formed in the sucking head can inspect the electrical characteristics of the electronic component appropriately during the sucking and conveying, for example, by insulating the electronic component and the arm support portion. Is possible.

In addition, for example, the rotor portion may be made of carbon fiber plastic, and the rotor portion has a plurality of through holes arranged between one of the plurality of arm attachment portions and the other one in the circumferential direction. It may be formed.

  Since the rotor part in which the through-hole is formed is particularly lightweight, the component suction conveyance machine having such a rotor part is suitable for high-speed driving. Moreover, since such a rotor part also has a favorable heat dissipation characteristic and high rigidity, such a component adsorption | suction conveyance machine also has the favorable position accuracy of the electronic component at the time of conveyance.

FIG. 1 is a schematic perspective view of a component suction conveyance machine according to an embodiment of the present invention. FIG. 2 is a schematic perspective view showing an arm portion of the component suction conveyance machine shown in FIG. FIG. 3 is a conceptual diagram showing a state in which the arm portion shown in FIG. 2 is in the raised position. FIG. 4 is a conceptual diagram showing a state in which the arm portion shown in FIG. 2 is in the lowered position.

  Hereinafter, the component suction conveyance device 10 and the driving method of the component suction conveyance device 10 according to the present invention will be described in detail with reference to embodiments.

  FIG. 1 is a schematic perspective view showing a component suction conveyance machine 10 according to the first embodiment of the present invention. The component sucking and conveying machine 10 sucks an electronic component 50 (see FIGS. 3 and 4) that is an object to be transported, and transports the sucked electronic component 50 in the circumferential direction. The component suction conveyance machine 10 includes a rotor unit 20 having a substantially disk-shaped outer shape, and a plurality of arm units 30 attached to the rotor unit 20.

  The rotor part 20 of the component suction conveyance machine 10 has a plurality of arm attachment parts 22 (see FIG. 3) provided along the circumferential direction. As shown in FIG. 3, an arm portion 30 is attached to each arm attachment portion 22.

  As shown in FIG. 1, the arm attachment portions 22 are arranged at a predetermined interval along the circumferential direction. 1, arm attachment portions 22 are provided at 24 locations along the circumferential direction of the rotor portion 20, and the arm attachment portions 22 are provided every 15 degrees along the circumferential direction. However, the number and interval of the arm attachment portions 22 provided in the rotor portion 20 are not limited to the example shown in FIG.

  An inter-arm through hole 24 is formed between one arm attachment portion 22 and another arm attachment portion 22. By forming the inter-arm through hole 24 between the two adjacent arm attachment portions 22 in the circumferential direction, the rotor portion 20 can be reduced in weight and inertia generated during rotation can be suppressed. In the rotor portion 20 shown in FIG. 1, the inter-arm through holes 24 and the arm attachment portions 22 are alternately arranged along the circumferential direction. In the component adsorbing / conveying device 10, a plurality of (as many as the arm attachment portions 22) inter-arm through holes 24 are formed, so that the balance between securing the rigidity of the rotor portion 20 and weight reduction is achieved. However, the number of inter-arm through holes 24 is not limited to this, and the number of inter-arm through holes 24 may be larger or smaller than the number of arm mounting portions 22.

  In the rotor part 20, a central through hole 26 for fixing the rotor part 20 to a rotating shaft (not shown) of the motor is formed on the inner diameter side of the arm attachment part 22. The rotor unit 20 is fixed to the rotation shaft of the motor through the central through hole 26 and is rotated by the motor. For example, the motor that drives the rotor unit 20 intermittently rotates the rotor unit 20 at an angle that is the same as the installation interval (15 degrees) of the arm attachment unit 22 in the rotor unit 20 or an integer multiple of the installation interval. The component suction conveyance device 10 conveys the electronic component 50 sucked and held by the arm mounting portion 22 in the circumferential direction by rotational driving by a motor.

  A plurality of devices (not shown) are arranged on the outer diameter side of the rotor unit 20 so as to surround the rotor unit 20. As an apparatus arranged around the rotor unit 20, for example, a supply device that supplies the electronic component 50 to the component adsorption unit 34 (see FIG. 2) of the arm unit 30 or the component adsorption unit 34 of the arm unit 30 is adsorbed. The electronic device 50 is ejected by the discharge device, the characteristic inspection device for inspecting the electrical characteristics of the electronic component 50 adsorbed by the component adsorbing portion 34 of the arm portion 30, and the adsorbing portion 34 of the arm portion 30. An appearance inspection device for inspecting the appearance of the electronic component 50 can be used. However, the apparatus arrange | positioned around the rotor part 20 is not specifically limited.

  The device arranged around the rotor unit 20 performs a predetermined operation on the arm unit 30 that is rotated and moved by the rotor unit 20 or the electronic component 50 that is sucked and held by the arm unit 30, so that the component suction conveyance machine 10. The electronic component 50 can be supplied and discharged, or the electronic component 50 being transported can be inspected by the component suction transporting machine 10.

  FIG. 2 is an enlarged schematic view showing one of the arm portions 30 included in the component suction conveyance machine 10 shown in FIG. The arm part 30 of the component suction conveyance machine 10 is attached to an arm attachment part 22 provided in the rotor part 20 shown in FIG. 1 and rotates in the circumferential direction of the rotor part 20 together with the rotor part 20. The component suction conveyance machine 10 has a total of 24 arm portions 30. However, the number of the arm parts 30 included in the component suction conveyance machine 10 is not limited to this, and the arm parts 30 may not be attached to some of the arm attachment parts 22. In FIG. 1, the spring 38 and the like included in the arm portion 30 are not shown.

  As shown in FIG. 2, the arm portion 30 is attached to the arm attachment portion 22 and can be rotated together with the rotor portion 20, and a component suction portion 34 provided to be movable up and down with respect to the arm support portion 32. And have. Further, the arm portion 30 includes a spring 38 that urges the component suction portion 34 upward. As shown in FIG. 3, the pusher 40 is separated from the head 39 of the component suction portion 34. During this time, the component suction part 34 is pushed upward.

  The arm support portion 32 has a substantially L-shaped outer shape, and as shown in FIG. 3, a first portion 32 a extending in the horizontal direction is fixed to the arm attachment portion 22 via a bolt 42. The first portion 32 a is disposed so as to extend in the radial direction of the rotor portion 20.

  The second portion 32b of the arm support portion 32 extends downward from the outer diameter direction end portion of the first portion 32a. A through-hole penetrating the second portion 32b in the vertical direction is formed inside the second portion 32b, and a part of the component adsorbing portion 34 is provided in the through-hole formed in the second portion 32b. The support portion 32 is provided so as to be movable in the vertical direction. The first portion 32a and the second portion 32b of the arm support portion 32 may be integrally formed with one member, or may be formed by joining a plurality of members.

  The component suction unit 34 is in contact with the suction head 36 that sucks the electronic component 50, the head 39 that contacts the pusher 40 shown in FIGS. 3 and 4, and receives the force that the pusher 40 pushes down the component suction unit 34, and the suction head 36 and a head portion 39 are connected, and a slide portion 35 is inserted through the inside of the arm support portion 30.

  As shown in FIG. 3, the suction head 36 constitutes a lower end portion of the component suction portion 34, and at least a part thereof is exposed below the second portion 32 b in the arm support portion 32. A nozzle capable of sucking the electronic component 50 is formed at the lower end of the suction head 36, and a vacuum hose (not shown) connected to the vacuum hose connecting portion 39a of the head 39 is formed on the nozzle of the suction head 36. The negative pressure is transmitted through. The adsorption of the electronic component 50 by the adsorption head 36 and the switching of the separation of the electronic component 50 by the negative pressure transmission stop or the positive pressure transmission are controlled by a control unit (not shown).

  The head portion 39 shown in FIGS. 3 and 4 constitutes the upper end portion of the component suction portion 34 and is located above the second portion 32 b of the arm support portion 32. When the rotor unit 20 is rotated by a predetermined angle, and the arm unit 30 attached to the rotor unit 20 is moved immediately above the device disposed around the rotor unit 20 and stopped, the arm unit 30 as shown in FIG. The pusher 40 descends from above and contacts the head 39. When the pusher 40 is further lowered, the component suction portion 34 is lowered while contracting the spring 38, and the suction head 36 and the electronic component 50 sucked by the suction head 36 are moved by the device disposed around the rotor portion 20. It moves to a predetermined position where it can be processed.

  The rotational movement and stop of the rotor unit 20 and the arm unit 30 in the component suction conveyance machine 10 and the vertical movement of the component suction unit 34 by the pusher 40 shown in FIGS. 3 and 4 are controlled by a control unit (not shown). The control unit controls driving of, for example, a motor that rotates the rotor unit 20 and a servo motor that moves the pusher 40 up and down. The control unit that controls the transmission of the negative pressure to the suction head 36 and the control unit that controls the rotational movement of the arm unit 30 and the vertical movement of the pusher 40 may be the same control unit or different control units. May be.

  Here, at least one of the rotor part 20 (refer FIG. 1) and the arm support part 32 (refer FIG. 2) in the components adsorption conveyance machine 10 consists of carbon fiber plastics. Such a rotor part 20 and the arm support part 32 are lighter in weight than a conventional rotor part or arm support part made of a metal such as aluminum or an alloy, and such a component adsorber is generated during rotation. The inertial force can be suppressed, and even if the same motor is used, it can be driven at a higher speed.

  In addition, since the carbon fiber plastic has a small amount of thermal deformation and higher rigidity than the material constituting the conventional rotor part and arm support part, it is possible to suppress deformation due to heat generated by a motor or the like. In particular, the rotor unit 20 may be applied with the pressing force from the pusher 40 shown in FIG. 4 from a plurality of pushers 40 at the same time. Deformation can be prevented and the conveyance position accuracy of the electronic component 50 can be increased.

  In particular, the component suction conveyance machine 10 has a large number of arm portions 30, and the arm portions 30 are attached to the outer diameter side of the rotor portion 20, so that the moving speed is fast. Therefore, by configuring the arm support portion 32 of carbon fiber plastic, it is possible to effectively suppress the inertial force (inertia) acting on the component suction conveyance device 10 and to accelerate and decelerate the electronic component 50 in a short time. Therefore, the component suction conveyance device 10 can convey the electronic component 50 at high speed.

  When the arm support portion 32 is made of carbon fiber plastic, the nozzle of the suction head 36 shown in FIG. 2 is made of an insulating material such as resin or ceramic that insulates the electronic component 50 from the arm support portion 32. Is preferred. In such a component suction / conveyance device 10, the suction head 36 insulates the electronic component 50 from the arm support portion 32, so that, for example, the electrical characteristics of the electronic component 50 can be appropriately inspected during suction conveyance. It is. The entire suction head 36 may be made of an insulating material, or only a part of the suction head 26, for example, only the nozzle that sucks the electronic component 50 may be made of an insulating material.

  At least one of the rotor unit 20 and the arm support unit 32 may be made of carbon fiber plastic. However, in order to realize high-speed and high-precision transport of the electronic component 50 by the component adsorption transporter 10, the rotor unit 20 and the arm support are supported. It is preferable that both of the parts 32 are made of carbon fiber plastic (for example, also called CFRP).

  The carbon fiber plastic constituting the rotor portion 20 and the arm support portion 32 is not particularly limited. For example, a PAN-based or pitch-based carbon fiber plastic can be employed, and a pitch system having a high elastic modulus is preferable. . In addition, the resin contained in the carbon fiber plastic is not particularly limited, and examples thereof include an epoxy resin, an unsaturated polyester, and phenol, and an epoxy resin is preferable. Further, the carbon fiber plastic may be a unidirectionally laminated carbon fiber plastic in which the directions of the carbon fibers are aligned, and is a pseudo isotropic laminated carbon fiber plastic in which the direction of the carbon fiber is changed. Also good.

  As described above, the present invention has been described with reference to the embodiments.However, the present invention is not limited to these embodiments, and the embodiments of various component conveyors in which the rotor portion 20 and the arm support portion 32 are made of carbon fiber plastics are provided. Needless to say, it is included in the technical scope of the present invention. For example, the use of the component suction conveyance machine 10 is not particularly limited, and the component suction conveyance machine 10 is used in the packaging process of the electronic component 50, the inspection process of the electronic component 50, the mounting process of the electronic component 50, and the like. In some cases it is used.

  Hereinafter, although the component adsorption | suction conveyance machine 10 which concerns on this invention is demonstrated still in detail, giving an Example, this invention is not limited only to these Examples.

In the embodiment, the vertical displacement generated at the outer diameter end portion of the arm portion 30 in the component suction conveyance machine 10 having the shape shown in FIG. 1 and the rotor portion 20 and the arm support portion 32 made of carbon fiber plastic. The amount was calculated by structural analysis. The conditions of the examples are as follows.
Diameter of rotor section 20: Φ270mm
Radial length of arm 30: L = 60mm
Radial protrusion amount of the arm part 30 from the rotor part 20: 35 mm
Heat generation temperature of the motor that drives the rotor unit 20: 43 ° C.
Vertical load from pusher 40: 5N

  In the comparative example, it has the shape shown in FIG. 1, except for the component suction conveyance machine that is the same as the example except that the rotor part and the arm support part are made of an aluminum alloy, under the same conditions. The amount of vertical displacement generated at the outer diameter end of the arm portion 30 was calculated by structural analysis. Table 1 shows physical property values and vertical displacement amounts of carbon fiber plastics and aluminum alloys used in Examples and Comparative Examples.

  As shown in Table 1, in the example, the vertical displacement amount is suppressed to about 37.5% of the comparative example, and such a difference is caused by the thermal expansion coefficient of the material constituting the rotor part and the arm support part, It is thought to be due to the difference in thermal conductivity and Young's modulus. Further, the carbon fiber plastic of the example has a specific gravity of about 60.7% as compared with the aluminum alloy of the comparative example, and it can be understood that the component suction conveyance device can suppress the inertia.

DESCRIPTION OF SYMBOLS 10 ... Component adsorption | suction conveyance machine 20 ... Rotor part 22 ... Arm attachment part 24 ... Inter-arm through-hole 26 ... Central part through-hole 30 ... Arm part 32 ... Arm support part 32a ... 1st part 32b ... 2nd part 34 ... Component adsorption Part 35 ... Slide part 36 ... Adsorption head 38 ... Spring 39 ... Head 39a ... Vacuum hose connecting part 40 ... Pusher 42 ... Bolt 50 ... Electronic component

Claims (4)

A rotor portion having a substantially disk-like outer shape, having a plurality of arm mounting portions provided along the circumferential direction, and rotated by a motor;
An arm support portion which is attached to the arm attachment portion and can rotate together with the rotor portion; and a component suction portion which has a suction head capable of sucking electronic components and is provided so as to be vertically movable with respect to the arm support portion; And a plurality of arm portions each having
At least one of the rotor part and the arm support part is a component suction conveyance machine made of carbon fiber plastic.   The component suction conveyance device according to claim 1, wherein the carbon fiber plastic is a pitch system. The arm support portion is made of carbon fiber plastic,
The component suction conveyance device according to claim 1, wherein the suction head is formed with a nozzle made of an insulating material that insulates the electronic component from the arm support portion. The rotor part is made of carbon fiber plastic,
The through-hole arrange | positioned between one of the said several arm attachment parts and other one with respect to the circumferential direction is formed in the said rotor part in any one of Claim 1-3. Parts suction conveyor.

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