CN112789959A

CN112789959A - Working machine

Info

Publication number: CN112789959A
Application number: CN201880098244.4A
Authority: CN
Inventors: 大岛宽之; 神尾龙平
Original assignee: Fuji Corp
Current assignee: Fuji Corp
Priority date: 2018-10-02
Filing date: 2018-10-02
Publication date: 2021-05-11
Anticipated expiration: 2038-10-02
Also published as: CN112789959B; WO2020070809A1; JPWO2020070809A1; JP7075498B2

Abstract

The work implement includes a work head for selectively mounting components constituting a circuit and components not constituting the circuit.

Description

Working machine

Technical Field

The present invention relates to a working machine for performing mounting work of elements constituting a circuit.

Background

The following patent documents describe an example of a working machine for performing an operation of mounting elements constituting a circuit.

Documents of the prior art

Patent document 1: japanese laid-open patent publication No. 8-236984

Patent document 2: japanese laid-open patent publication No. 11-298137

Disclosure of Invention

Problems to be solved by the invention

In some cases, the work machine performs mounting work of not only the components constituting the circuit but also components not constituting the circuit. The present invention has been made in view of such circumstances, and an object of the present invention is to appropriately perform mounting work of elements constituting a circuit and mounting work of elements not constituting a circuit.

Means for solving the problems

In order to solve the above problem, the present specification discloses a work machine including a work head that performs a mounting work of selectively mounting components constituting a circuit and components not constituting the circuit.

Effects of the invention

According to the present disclosure, a mounting work of selectively mounting components constituting a circuit and components not constituting a circuit is performed by a work head. This makes it possible to appropriately perform the mounting work of the elements constituting the circuit and the mounting work of the elements not constituting the circuit.

Drawings

Fig. 1 is a perspective view showing an electronic component mounting machine.

Fig. 2 is a perspective view showing the carriage.

Fig. 3 is a sectional view showing the suction nozzle.

Fig. 4 is a block diagram showing the control device.

Fig. 5 is a perspective view showing the carriage in a state where the element cover is placed.

Fig. 6 is a perspective view showing the carriage in a state where the electric element is placed.

Fig. 7 is a perspective view showing the carriage in a state where the electric component and the component cover are placed.

Detailed Description

Hereinafter, examples of the present invention will be described in detail with reference to the drawings as modes for carrying out the present invention.

An electronic-component mounting machine 10 of an embodiment of the present invention is shown in fig. 1. The electronic component mounter 10 is a device for performing mounting work of an electric component on a carriage. The electronic component mounting apparatus 10 includes: a conveying device 20, a moving device (see fig. 4)22, a mounting head 24, a supply device 26, a component camera 28, a marking camera (see fig. 4)30, a nozzle table 32, a cover stage 34, and a control device (see fig. 4) 36.

The conveyor device 20 includes a pair of conveyor belts 50 and an electromagnetic motor (see fig. 4)52 for circulating the conveyor belts 50. The pair of conveyor belts 50 are disposed so as to extend in the X-axis direction at substantially the center of the base 53 in the Y-axis direction. The carriage 54 is supported by the pair of conveyor belts 50, and the carriage 54 is conveyed in the X-axis direction by the driving of the electromagnetic motor 52. The transfer device 20 further includes a clamping device (see fig. 4) 56. The gripping device 56 fixedly holds the carriage 54 supported by the conveyor belt 50 at a predetermined working position (the position in which the carriage 54 is illustrated in fig. 1). The transport device 20 further includes a suction device (see fig. 4) 57. The suction device 57 is disposed between the pair of conveyor belts 50, and sucks the electric components placed on the carriage 54 from the lower surface side of the carriage 54 held by the clamp device 56.

More specifically, as shown in fig. 2, the carrier 54 is formed into a substantially rectangular flat plate shape, and a plurality of component mounting portions 60 for mounting the electrical components (see fig. 5)58 are formed on the carrier 54. In addition, a plurality of through holes 62 penetrating in the vertical direction are formed in each of the plurality of element mounting portions 60. Also, at the position where the carriage 54 is held by the gripping device 56, the suction device 57 communicates with each of the plurality of through holes 62 from the lower surface side of the carriage 54. Thereby, the electric component 58 mounted on the carrier 54 is attracted by the attraction device 57 from the lower surface side of the carrier 54. In the carrier 54, the plurality of magnets 66 are embedded in the upper surface of the carrier 54 so as to sandwich each of the plurality of component mounting portions 60. Thus, an element cover (see fig. 1)67, which will be described later in detail, is fixed to the carriage 54 by the magnet 66.

The moving device 22 includes a slider (not shown) to which the mounting head 24 is attached, an X-axis direction sliding mechanism (not shown), and a Y-axis direction sliding mechanism (not shown). The X-axis direction slide mechanism moves the slider in the X-axis direction by the operation of an electromagnetic motor (see fig. 4)68, and the Y-axis direction slide mechanism moves the slider in the Y-axis direction by the operation of an electromagnetic motor (see fig. 4) 69. Thereby, the mounting head 24 is moved to an arbitrary position on the base 53 by the moving device 22.

The mounting head 24 mounts the electric component 58 and has a suction nozzle 70 provided on a lower end surface. Since the suction nozzle 70 is described in japanese patent application No. 2016-552779 filed by the applicant of the present application, for simplicity, as shown in fig. 3, a suction pad 74 is held at a lower end portion of a substantially cylindrical housing 72 so as to be movable in the vertical direction. The suction pad 74 is formed of an elastically deformable material, and a lower end of the suction pad 74 is formed in a horn shape. The inside of the suction pad 74 is hollow, and the hollow inside of the suction pad 74 communicates with a positive/negative pressure supply device (see fig. 4)78 via an air passage 76. Then, negative pressure is supplied to the air passage 76 by the positive/negative pressure supply device 78, whereby the electric element 58 is sucked and held by the suction pad 74. Further, the suction pad 74 moves upward by the supply of the negative pressure to the air passage 76. At this time, the outer edge portion of the adsorption pad 74 is supported by the case 72 at the lower end portion. Thereby, elastic deformation of the suction pad 74 when the electric element 58 is sucked and held is suppressed, and suction and holding of the electric element 58 by the suction pad 74 is ensured. When a slight positive pressure is supplied to the air passage 76 by the positive/negative pressure supply device 78, the holding of the suction pad 74 is released, and the electric element 58 is detached. The mounting head 24 has a nozzle lifting device (see fig. 4)80 for lifting and lowering the nozzles 70, and the mounting head 24 changes the position of the held electric component 58 in the vertical direction by the nozzle lifting device 80. The suction nozzle 70 can be attached to and detached from the mounting head 24 by one touch, and can be replaced with a different type of suction nozzle.

As shown in fig. 1, the supply device 26 is a device that is disposed at an end in the Y-axis direction and supplies the electric component 58 in a state of being placed on the tray 82. The supply device 26 includes a tray storage (not shown) and a tray moving device 84. A plurality of trays 82 are stored in the tray storage. The tray 82 stored in the tray storage is pulled out to a component supply position (a position where the tray 82 is shown in fig. 1) where components are supplied from the tray 82 to the mounting head 24 by the operation of the tray moving device 84.

The parts camera 28 is disposed beside the supply device 26 in an upward state on the base 53. Thus, by moving the mounting head 24 upward of the component camera 28, the component camera 28 can photograph the electric component 58 held by the suction nozzle 70. The slider to which the mounting head 24 is attached, which is fixed to the transfer device 22 in a downward state, of the marking camera 30 is moved to an arbitrary position by the operation of the transfer device 22. Thereby, the marker camera 30 can photograph an arbitrary position on the base 53.

The suction nozzle table 32 is disposed near the side of the feeder 26 opposite to the component camera 28, and includes a suction nozzle tray 88. The suction nozzle tray 88 accommodates a plurality of types of suction nozzles having different nozzle diameters. In the nozzle stage 32, the replacement of the nozzles attached to the mounting head 24 and the nozzles stored in the nozzle tray 88 is automatically performed.

The cover stage 34 is disposed so as to face the supply device 26 with the conveyance device 20 interposed therebetween. The cover table 34 is formed in a flat plate shape, and has an upper surface formed as a space in which the three element covers 67 can be placed without overlapping.

As shown in fig. 4, the control device 36 includes a controller 100 and a plurality of drive circuits 102. The plurality of drive circuits 102 are connected to the

electromagnetic motors

52, 68, 69, the gripping device 56, the suction device 57, the positive/negative pressure supply device 78, the nozzle elevating device 80, and the tray moving device 84. The controller 100 includes a CPU, ROM, RAM, and the like, and is mainly a computer and connected to a plurality of drive circuits 102. Thus, the operations of the transport device 20, the moving device 22, and the like are controlled by the controller 100. The controller 100 is also connected to the image processing device 108. The image processing device 108 is a device for processing the shot data shot by the part camera 28 and the mark camera 30. Thereby, the controller 100 acquires various information from the shot data.

In the electronic component mounter 10, with the above configuration, the carriage 54 on which the electric component 58 is not mounted is carried in a state where the component cover 67 is placed. Then, in the electronic component mounter 10, the component cover 67 is removed, and the electric component 58 is mounted on the carriage 54 from which the component cover 67 is removed. After the mounting operation of the electric component 58 is completed, the component cover 67 is placed on the carrier 54 on which the electric component 58 is mounted, and the carrier 54 is carried out.

Specifically, as shown in fig. 1, the component cover 67 is formed as a substantially square flat plate, and the length dimension of one side of the component cover 67 is slightly shorter than the length dimension of the short side of the carriage 54. The length of the long side of the carriage 54 is set to be slightly longer than three times the length of one side of the element cover 67. Thus, three element covers 67 can be placed on the upper surface of the carriage 54 so as to be aligned in the longitudinal direction of the carriage 54. In the element cover 67, four square exposure holes 110 are formed in a 2 × 2 array. The exposure hole 110 is slightly smaller than the electrical component 58 intended to be mounted to the carrier 54. Three component covers 67 are mounted on the carrier 54 to which the electric components 58 are not mounted, such that the component mounting portion 60 is exposed through the exposure hole 110. The element cover 67 is formed of a magnetic body such as iron, and is fixed by a magnet 66 embedded in the upper surface of the carrier 54.

Thus, three component covers 67 are placed on the carriage 54 on which no electric component 58 is mounted, and the carriage 54 in this state is carried into the electronic component mounter 10. In addition, 12 component mounting portions 60 are formed on the carriage 54 shown in fig. 1 so that three component covers 67 can be mounted thereon, and 8 component mounting portions 60 are formed on the carriage 54 shown in fig. 2 so that two component covers 67 can be mounted thereon. Then, fig. 5 shows the carrier 54 in a state where two component covers 67 are placed on the carrier 54 in which 8 component placing portions 60 are formed. When the carriage 54 is carried into the electronic component mounting machine 10, the carriage 54 is conveyed to the working position by an instruction of the controller 100, and at this position, the carriage 54 is fixedly held by the clamping device 56. At this time, the through hole 62 formed in the carriage 54 communicates with the suction device 57, and air is sucked from the through hole 62 by the operation of the suction device 57. The mounting head 24 is moved upward of the carriage 54 by an instruction of the controller 100, and the component cover 67 mounted on the carriage 54 is sucked and held by the suction nozzle 70. Next, the component cap 67 held by the suction nozzle 70 is transferred from the carriage 54 onto the cap mounting table 34 by the operation of the transfer device 22.

When the three component covers 67 are transferred from the carriage 54 onto the cover mounting table 34, the marker camera 30 moves above the carriage 54 from which the component covers 67 have been removed by an instruction of the controller 100, and images the carriage 54. Thereby, the shooting data is analyzed in the controller 100, and information on the holding position of the carriage 54 and the like is obtained. In the supply device 26, the tray on which the electric component 58 is mounted is pulled out to the component supply position by the operation of the tray moving device 84 in response to a command from the controller 100.

The mounting head 24 is moved upward of the tray 82 by an instruction of the controller 100, and the electric component 58 is sucked and held by the suction nozzle 70. After the component cover 67 is held by the suction nozzle 70 and is transferred from the carriage 54 onto the cover table 34, the electric component 58 is held without replacing the suction nozzle 70 attached to the mounting head 24. That is, the electric component 58 and the component cover 67 are each held by the same suction nozzle 70 mounted to the mounting head 24.

Next, the mounting head 24 is moved upward of the component camera 28 by an instruction of the controller 100, and the component camera 28 images the electric component 58 held by the suction nozzle 70. Thus, the controller 100 analyzes the imaging data to obtain information on the holding posture, the holding position, and the like of the element. Then, the mounting head 24 is moved upward of the carriage 54 by an instruction of the controller 100, the holding position of the carriage 54, the holding posture of the electrical component 58, and the like are corrected, and the held electrical component 58 is mounted on the component mounting portion 60 of the carriage 54 as shown in fig. 6. At this time, in the component mounting portion 60, air is sucked from the through hole 62, so that the electric component 58 mounted on the component mounting portion 60 is fixed by the suction of air, and positional deviation is prevented.

After the mounting operation of the electric component 58 on the carriage 54 is completed, the component cover 67 transferred on the cover table 34 is returned to the carriage 54. That is, the mounting head 24 is moved upward of the cover mounting table 34 by an instruction of the controller 100, and the component cover 67 placed on the cover mounting table 34 is sucked and held by the suction nozzle 70. Next, the component cap 67 held by the suction nozzle 70 is transferred from the cap mounting table 34 onto the carrier by the operation of the moving device 22. At this time, the component cover 67 is mounted on the carrier 54 to which the electric component 58 is mounted so that the electric component 58 is exposed through the exposure hole 110 although a part of the outer periphery is covered (see fig. 7). Thus, the element cover 67 is fixed to the carriage 54 by the magnet 66, and the outer edge portion of the electric element 58 mounted on the carriage 54 is pressed by the edge portion of the area exposure hole 110 of the element cover 67. In this way, in one electronic component mounter 10, after the component cover 67 is once detached from the carriage 54, the electric component 58 is mounted on the carriage 54, and the component cover 67 is mounted on the carriage 54 again. That is, the component cover 67 is attached to and detached from the carrier 54, and the electric component 58 is mounted on the carrier 54.

When the three component covers 67 are returned from the cover table 34 to the carriage 54, the operation of the suction device 57 is stopped, and the suction of the electric component 58 is released. Subsequently, the clamping of the carriage 54 by the clamping device 56 is released, and the carriage 54 is carried out of the electronic component mounting apparatus 10. At this time, since the electric component 58 mounted on the carriage 54 is pressed by the component cover 67, even in a state where the suction at the time of carrying out the carriage 54 is released, the positional deviation of the electric component 58 at the time of carrying out the carriage 54 can be prevented.

The carriage 54 carried out of the electronic component mounting machine 10 is carried out to, for example, a different electronic component mounting machine located on the downstream side of the electronic component mounting machine 10, and some other electric components 120 are mounted on the electric components 58 through the exposure holes 110 of the component cover 67 mounted on the carriage 54, as shown in fig. 7. Thereby, a product including the electric element 58 is manufactured. Incidentally, the component cover 67 prevents positional deviation of the electrical component 58 during conveyance of the carriage 54 and mounting deviation due to a force applied to the electrical component 58 when the other electrical component 120 is mounted on the electrical component 58, and may be electrically connected to the carriage, but does not constitute an electric circuit. Therefore, after the manufacture of the product constituting the circuit including the electric component 58 is completed, the component cover 67 is removed from the carrier 54. In addition, the carrier 54 is used for conveying the electric element 58 when manufacturing a product constituting an electric circuit, and the product is detached from the carrier 54 after manufacturing the product containing the electric element 58. Thus, the electrical component 58 constitutes an electrical circuit alone or together with other electrical components 120 mounted to the electrical component 58.

In this way, in the electronic component mounter 10, the mounting operation of the electric component 58 and the mounting and dismounting operation of the component cover 67 are selectively executed by the mounting head 24 of one electronic component mounter 10. This eliminates the need for a dedicated mounting head for each of the electric component 58 and the component cover 67, thereby reducing the cost and space. Further, in the maintenance work, it is only necessary to perform maintenance on one mounting head 24, not on the dedicated mounting head for each of the electric component 58 and the component cover 67, and the maintenance work can be reduced.

The electric element 58 is an element constituting an electric circuit, and the element cover 67 is an element not constituting an electric circuit. Therefore, the above description is an example of a case where the mounting head 24 of one electronic component mounter 10 selectively performs the mounting operation of the components constituting the circuit and the mounting and dismounting operation of the components not constituting the circuit. The electric element 58 is an electrically conductive element, and the element cover 67 is an element that is not electrically conductive to the electric element 58 when forming an electric circuit. Therefore, the above description can be said to be an example of a case where the mounting head 24 of one electronic component mounter 10 selectively performs the mounting operation of the electrically conductive component and the mounting and dismounting operation of the component that is not electrically conductive to the electric component 58. Further, the electric component 58 is a component constituting a product manufactured by one or more working machines including the electronic component mounting machine 10, and the component cover 67 is a component not constituting a product manufactured by one or more working machines including the electronic component mounting machine 10. Therefore, the above description can be said to be an example of a case where the mounting head 24 of one electronic component mounter 10 selectively performs the mounting operation of the components constituting the manufactured product and the mounting and dismounting operation of the components not constituting the manufactured product.

In the electronic component mounter 10, the suction nozzles can be automatically mounted to and removed from the mounting head 24, and for example, the suction nozzles can be replaced with suction nozzles having different nozzle diameters, but the electric component 58 and the component cover 67 are selectively held by the same suction nozzle 70. This can save the time required for the nozzle replacement operation, and can shorten the cycle time.

Incidentally, in the above-described embodiment, the electronic component mounting machine 10 is an example of a working machine. The mounting head 24 is an example of a working head. The electric element 58 is an example of an element constituting an electric circuit. The element cover 67 is an example of an element that does not constitute a circuit. The suction nozzle 70 is an example of a component holder.

The present invention is not limited to the above-described embodiments, and can be implemented in various modifications and improvements based on knowledge of those skilled in the art. Specifically, for example, in the above-described embodiment, the positional deviation of the electric component 58 is prevented by placing the component cover 67 on the carriage 54 so as to cover a part of the electric component 58, but the positional deviation of the electric component 58 can be prevented by placing a member such as the component cover 67 so as to overlap the electric component 58. For example, a plate-like member may be placed so as to cover the entire electric element 58, or a block-like member may be placed on a part of the upper surface of the electric element 58. The fixing of the element cover 67 to the carriage 54 is not limited to the magnetic body and the magnet, and may be, for example, fixing by a viscous substance or fixing by a soft material such as rubber for the element cover 67. The element cover 67 may be formed using a material heavier than the electric element 58. Further, the carriage 54 may be employed as an element constituting the circuit without finally detaching the carriage 54 from the electric element 58.

In the above embodiment, the mounting work of the electric component 58 and the attaching/detaching work of the component cover 67 are selectively performed by the same suction nozzle 70 attached to the mounting head 24, but the mounting work of the electric component 58 and the attaching/detaching work of the component cover 67 may be selectively performed by different kinds of suction nozzles. That is, for example, the component cover 67 may be held by a suction nozzle having a large nozzle diameter, and the electric component 58 may be held by a suction nozzle having a small nozzle diameter which is automatically replaced from among a plurality of kinds of holders provided in the suction nozzle stage.

In the above-described embodiment, one electronic component mounter 10 has one mounting head 24 and the electric component 58 and the component cover 67 are held by the one mounting head 24, but one electronic component mounter may have two or more mounting heads and the electric component 58 and the component cover 67 may be held by one of the two or more mounting heads. Further, the electric component 58 and the component cover 67 may be held by two or more mounting heads. In the case where the electric component 58 and the component cover 67 are held by two or more mounting heads, the same type of suction nozzle may be mounted on the two or more mounting heads, and the electric component 58 and the component cover 67 may be held by the same type of suction nozzle. On the other hand, different types of suction nozzles may be attached to two or more mounting heads, and the electric component 58 and the component cover 67 may be held by these different types of suction nozzles. Further, the electric component 58 and the component cover 67 may be held and operated at the same time by two or more mounting heads. By using a plurality of mounting heads, it is possible to hold and perform work on various types of electric components and component covers, and further, to achieve a reduction in cycle time. Further, two or more mounting heads may be mounted on one transfer device and transferred simultaneously, or a plurality of transfer devices may be provided in one electronic component mounting apparatus and the mounting heads may be transferred individually. Further, the mounting head provided in one electronic component mounting machine may perform mounting work of components constituting a circuit and removing work of components not constituting a circuit.

In the above embodiment, the electrical component 58 is mounted on the carrier 54, but the electrical component 58 may be mounted on a circuit board or the like. When the electric element 58 is mounted on a circuit board or the like in this manner and the circuit board is electrically connected to the electric element 58, an electric circuit is formed by the circuit board and the electric element 58.

For example, in the above-described embodiment, the mounting work of the electric component 58 and the mounting work of the component cover 67 are selectively performed by the suction nozzle 70, but the mounting work of the electric component 58 and the mounting work of the component cover 67 may be selectively performed by a holder (so-called chuck) that grips the component by two or more claw members. In such a case, if a protrusion or the like to be gripped by a chuck is formed on the element cover 67 or the like, the holding is easy.

The electric element 58 and the other electric elements 120 used in the above embodiment may be different types of electric elements or the same type of electric elements.

Description of the reference numerals

10: electronic component mounting machine (working machine) 24: mounting head (work head) 58: electric element (element constituting a circuit) 67: element cover (element not constituting a circuit) 70: suction nozzle (holder).

Claims

1. A working machine is provided with a working head for selectively mounting components constituting a circuit and components not constituting the circuit.

2. The work machine of claim 1,

the work head is capable of replacing the holder holding the component, and the component constituting the circuit and the component not constituting the circuit are held by the same holder and are subjected to mounting work.

3. The work machine of claim 1,

the work head is capable of replacing the holder holding the component, and holding the component constituting the circuit and the component not constituting the circuit by different holders and performing mounting work.

4. The working machine according to any one of claims 1 to 3,

the work head performs a mounting work for mounting the components constituting the circuit and the components not constituting the circuit so as to overlap each other.