JP6876392B2 - Supply device for tape for transferring electronic components - Google Patents

Description

The present invention relates to a device for supplying a tape for transferring electronic components, and more specifically, by making it possible to accurately detect a transfer hole of the tape for transferring electronic components, accurate transfer of the tape for transferring electronic components by a sprocket is performed. The present invention relates to a tape supply device for transferring electronic components.

An electronic component mounting machine is a device for mounting electronic components on a printed circuit board (PCB), and supplies various electronic components such as integrated circuits, diodes, capacitors, resistors, etc. from the electronic component supply machine. After receiving and transferring it to the mounting position of the printed circuit board, the work of mounting it on the printed circuit board is carried out.

Such an electronic component mounting machine is provided with an electronic component transfer tape supply device for supplying electronic components, a conveyor for transferring a printed circuit board, and a nozzle, and sucks electronic components from the electronic component transfer tape supply device. It includes a head assembly to be mounted on the printed circuit board and an electronic component transfer device for moving the head assembly in the vertical or horizontal direction, and the like.

The electronic component transfer tape supply device provided to the electronic component mounting machine includes an electronic component reel in which a plurality of electronic components are wound and unwound after being wound with the attached transfer tape in an aligned state, and can be unwound from the electronic component reel. The transfer tape that comes out is transferred to the electronic component mounting position by the sprocket.

Therefore, a transfer hole corresponding to the pitch of the sprocket is formed on one side of the transfer tape, and a hole sensing portion for detecting the transfer hole of the transfer tape is formed in the supply device of the electronic component transfer tape.

That is, the hole sensing unit senses the transfer hole of the transfer tape unwinding from the electronic component reel and transmits the signal to the control unit, whereby the control unit calculates the distance between the center of the transfer hole of the transfer tape and the sprocket. By controlling the drive and drive speed of the sprocket, the sprocket accurately transfers the transfer tape to the electronic component mounting position.

Such a hole sensing unit generally includes a light emitting unit that irradiates light and a light receiving unit that receives light emitted from the light emitting unit, and the light emitted from the light emitting unit passes through the transfer hole. By measuring the amount of light received by the light receiving unit, the presence or absence of a transfer hole is detected.

However, in the case of the conventional hole sensing part, when the transfer tape is made of opaque paper or synthetic resin material, the transfer hole is detected relatively accurately, but when the transfer tape is made of a transparent or translucent material, it is accurate. In some cases, the transfer hole is not sensed, and in this case, the transfer hole of the transfer tape does not mesh accurately with the teeth of the sprocket, which makes it impossible to smoothly transfer the transfer tape.

Korean Patent Application Publication No. 2008-0041864

The present invention has been devised by paying attention to the above-mentioned various problems, and the technical problem to be solved by the present invention is that even when the transfer tape is made of a transparent or translucent material. It is an object of the present invention to provide an electronic component transfer tape supply device that accurately senses a transfer hole of a transfer tape so that accurate component mounting can be performed by smooth transfer of the transfer tape.

The subject matter of the present invention is not limited to the subject matter mentioned above, and other issues not mentioned above will be clearly understood by those skilled in the art from the following description.

The device for supplying the electronic component transfer tape according to the embodiment of the present invention for solving the above problems is the transfer tape having a plurality of transfer holes formed therein, and the transfer tape arranged and transferred on the transfer path of the transfer tape. The hole sensing unit that senses the transfer hole of the transfer tape, the sprocket that meshes with the transfer hole of the transfer tape and transfers the transfer tape to the component mounting position, and the transfer hole from the signal detected by the hole sensing unit. And a control unit that calculates the distance of the sprocket and controls the driving distance and the driving speed of the sprocket, the hole sensing unit includes when the center of the transfer hole of the transfer tape passes through the hole sensing unit. , A polarizing filter may be included that reduces the amount of light transmitted by the edges of the transfer holes to detect the presence and center of the transfer holes.

In this case, the hole sensing unit includes a light emitting unit that irradiates light and a light receiving unit that receives light emitted from the light emitting unit and transmits a signal based on the amount of light received by the control unit. The transfer tape can be transferred across between the light emitting unit and the light receiving unit.

Here, the polarizing filter may be arranged between the light emitting unit and the transfer tape, may be arranged between the light receiving unit and the transfer tape, and may be arranged between the light emitting unit and the transfer tape, and between the light emitting unit and the transfer tape. It can also be arranged between the light receiving unit and the transfer tape.

Further, the transfer tape may be made of a transparent or translucent material.

Other specific contents of the present invention are included in the detailed description and drawings.

According to the electronic component transfer tape supply device according to the embodiment of the present invention, even when the transfer tape is made of a transparent or translucent material, the transfer holes of the transfer tape are accurately sensed, so that the transfer tape can be used. The effect of accurate component mounting due to smooth transfer can be provided.

The effects according to the present invention are not limited by the contents illustrated above, and various effects are included in the present specification.

It is a schematic block diagram of the supply device of the electronic component transfer tape by embodiment of this invention. It is a partially enlarged perspective view which shows the mounting position of the hole sensing part provided in the supply device of the electronic component transfer tape by embodiment of this invention. It is a perspective view of the reel which is an electronic component provided to the supply device of the tape for transferring an electronic component by embodiment of this invention. FIG. 5 is a partially enlarged perspective view showing a configuration in which a transfer tape is transferred by a sprocket in the electronic component transfer tape supply device according to the embodiment of the present invention. It is a block diagram which shows schematic the structure and operation relation of the hole sensing part provided in the supply device of the conventional electronic component transfer tape. It is a block diagram which shows schematic the structure and operation relation of the hole sensing part provided in the supply device of the conventional electronic component transfer tape. 5 is a graph showing the amount of light received by the light receiving unit of the hole sensing unit according to FIGS. 5 and 6. It is a block diagram which shows schematic the structure and operation relation of the hole sensing part provided in the supply device of the electronic component transfer tape by embodiment of this invention. It is a block diagram which shows schematic the structure and operation relation of the hole sensing part provided in the supply device of the electronic component transfer tape by embodiment of this invention. It is a block diagram which shows schematic the structure and operation relation of the hole sensing part provided in the supply device of the electronic component transfer tape by embodiment of this invention. It is a block diagram which shows schematic the structure and operation relation of the hole sensing part provided in the supply device of the electronic component transfer tape by embodiment of this invention. 8 is a drawing showing a graph showing the amount of light received by the light receiving unit of the hole sensing unit according to FIGS. 8 to 11. It is a block diagram which shows schematic the structure and operation relation of the hole sensing part provided in the supply device of the electronic component transfer tape by another Embodiment of this invention. It is a block diagram which shows schematic the structure and operation relation of the hole sensing part provided in the supply device of the electronic component transfer tape by another Embodiment of this invention.

The advantages and features of the present invention and the methods for achieving them will be clarified in the embodiments described in detail below with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but is realized in various forms different from each other, and the present embodiment merely completes the disclosure of the present invention, and the present invention It is provided to fully inform a person having ordinary knowledge in the technical field to which the invention belongs, and the present invention is defined only by the scope of the claims. The size and relative size of the components displayed in the drawings may be exaggerated for clarity. The same reference numerals refer to the same components throughout the specification.

The embodiments described in the present specification will be described with reference to the ideal cross-sectional view and schematic view of the present invention. Therefore, the form and structure of the illustrated figure may be deformed depending on the manufacturing technique or the like. Further, in each of the drawings illustrated in the present invention, each component may be enlarged or reduced for convenience of explanation.

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

FIG. 1 is a schematic configuration diagram of a tape supply device for transferring electronic components according to an embodiment of the present invention. FIG. 2 is a partially enlarged perspective view showing a mounting position of a hole sensing portion provided in the supply device for the electronic component transfer tape according to the embodiment of the present invention. FIG. 3 is a perspective view of an electronic component reel provided in the electronic component transfer tape supply device according to the embodiment of the present invention. FIG. 4 is a partially enlarged perspective view showing a configuration in which the transfer tape is transferred by a sprocket in the electronic component transfer tape supply device according to the embodiment of the present invention.

First, as shown in FIG. 1, the electronic component transfer tape supply device 100 according to the embodiment of the present invention includes a main body in which a transfer path for the transfer tape 150 is formed.

An introduction portion 110 of the transfer tape 150 is formed at the tip of the transfer path of the main body, and the transfer tape 150 guided to the transfer path via the introduction portion 110 is transferred to the component mounting position by the sprocket 130 installed at the rear stage of the main body. Is done.

As shown in FIG. 3, the transfer tape 150 is stored in a state of being wound around the electronic component reel 140, is unwound from the tip, and is supplied to the transfer path via the introduction portion 110 of the main body.

A storage space for accommodating a plurality of electronic components 152 at a positive pitch is formed in the transfer tape 150, and various electronic components 152 such as integrated circuits, diodes, capacitors, resistors, etc. are stored in this storage space. The upper part thereof is sealed with a cover tape 154.

Here, a plurality of transfer holes 160 are formed at regular intervals on one side edge of the transfer tape 150, and the intervals of the transfer holes 160 correspond to the pitch intervals of the teeth of the sprocket 130.

Therefore, when the transfer tape 150 wound around the electronic component reel 140 is supplied through the transfer path of the main body, the transfer holes 160 formed on the edges of the transfer tape 150 are meshed with the teeth of the sprocket 130, and the sprocket 130 is engaged. The transfer tape 150 is transferred to the electronic component mounting position according to the driving speed of the electronic component.

In this way, the process in which the transfer hole 160 meshes with the teeth of the sprocket 130 and is transferred to the electronic component mounting position while the transfer tape 150 moves along the transfer path is very precise and is therefore transferred. The distance between the center of the transfer hole 160 of the transfer tape 150 and the sprocket 130 must be controlled very precisely.

Therefore, the electronic component transfer tape supply device 100 is provided with a hole sensing unit 200 for sensing the transfer hole 160 of the transfer tape 150.

That is, as shown in FIGS. 1 and 2, in the main body of the electronic component transfer tape supply device 100, the presence or absence of the transfer hole 160 of the transfer tape 150 on the transfer path of the transfer tape 150 is detected and detected. A hole sensing unit 200 that transmits a signal to the control unit 300 is provided.

The hole sensing unit 200 includes a light emitting unit 210 that irradiates light and a light receiving unit 220 that receives light emitted from the light emitting unit 210. Further, the electronic component transfer tape supply device 100 sets the distance between the center of the transfer hole 160 of the transfer tape 150, which receives the input of the light amount signal received from the light receiving unit 220 and passes through, and the transfer hole 160 and the sprocket 130. By calculation, it may include a control unit 300 for controlling the drive and drive speed of the sprocket 130.

Here, the control unit 300 can control the drive and drive speed of the sprocket 130 by applying a control signal to the motor 120 that drives the sprocket 130 in response to the input signal.

When the transfer tape 150 passes through the hole sensing unit 200, the light emitted from the light emitting unit 210 of the hole sensing unit 200 is received by the light receiving unit 220 only when it passes through the transfer hole 160 of the transfer tape 150, and receives light. The unit 220 transmits a signal based on the amount of received light to the control unit 300, so that the hole sensing unit 200 can detect the presence or absence of the transfer hole 160 of the transfer tape 150.

Further, the control unit 300 calculates the distance between the center of the transfer hole 160 of the transfer tape 150 and the sprocket 130 based on a signal such as the amount of light received from the hole sensing unit 200, and the motor of the sprocket 130 according to the calculated value. By applying a drive signal to the sprocket 130, the transfer hole 160 of the transfer tape 150 is controlled to be accurately meshed with the teeth of the sprocket 130.

However, when the transfer tape 150 is made of paper or an opaque material, the light emitted from the light emitting unit 210 is received by the light receiving unit 220 only when it passes through the transfer hole 160, and the light emitting unit 210 and the light receiving unit 220 When passing around the transfer hole 160 between them, the light cannot be transmitted and the light receiving unit 220 does not receive the light, so that the presence or absence of the transfer hole 160 can be easily detected, but the transfer tape 150 is transparent or translucent. In the case of a material, the light emitted from the light emitting unit 210 passes through the entire periphery of the transfer hole 160 or the transfer hole 160, and the presence or absence of the transfer hole 160 is not accurately detected.

As described above, when the transfer tape 150 is made of a transparent or translucent material, the sensing process of the transfer hole 160 by the hole sensing unit 200 will be described with reference to FIGS. 5 to 7.

5 and 6 are configuration diagrams schematically showing the configuration and operation relationship of the hole sensing unit provided in the conventional electronic component transfer tape supply device. FIG. 5 is a configuration diagram showing an operating relationship in which the light emitted from the light emitting unit of the hole sensing unit passes around the transfer hole of the transfer tape, and FIG. 6 is a configuration diagram in which the light emitted from the light emitting unit of the hole sensing unit is transferred. It is a block diagram which shows the operation relation which passes through a transfer hole of a tape.

Further, FIG. 7 is a graph showing the amount of light received by the light receiving unit of the hole sensing unit according to FIGS. 5 and 6.

As shown in FIGS. 5 and 6, when the transfer tape 150 is made of a transparent or translucent material, the light emitted from the light emitting unit 210 is transmitted as it is even when passing around the transfer hole 160 of the transfer tape 150. It is received by the light receiving unit 220. Further, the light emitted from the light emitting unit 210 is also received by the light receiving unit 220 when passing through the transfer hole 160 of the transfer tape 150.

When the transfer tape 150 is made of a transparent or translucent material, the light emitted from the light emitting unit 210 is transmitted through the transfer hole 160 and the periphery of the transfer hole 160 by the light receiving unit 220. The amount of light received is the same as shown in the graph of FIG. 7, which makes the transfer hole 160 have no discriminating power for sensing.

8 and 9 are configuration diagrams schematically showing the configuration and operation relationship of the hole sensing unit provided in the supply device for the electronic component transfer tape according to the embodiment of the present invention. FIG. 8 is a configuration diagram showing an operating relationship in which the light emitted from the light emitting unit of the hole sensing unit passes around the transfer hole of the transfer tape, and FIG. 9 is a configuration diagram showing the operation relationship in which the light emitted from the light emitting unit of the hole sensing unit is transferred. It is a block diagram which shows the operation relation which passes through a transfer hole of a tape.

As shown in FIGS. 8 and 9, the electronic component transfer tape supply device according to the embodiment of the present invention has a polarizing filter 500 arranged between the light emitting unit 210 and the light receiving unit 220 forming the hole sensing unit 200. Further may be included.

In this case, the polarizing filter 500 may be arranged between the transfer tape 150 passing between the light emitting unit 210 and the light receiving unit 220 and the light emitting unit 210.

The polarizing filter 500 functions to cause the irradiated light to vibrate in only one direction when it vibrates in all directions on a line forming a right angle, so that the wave of the light is oscillated in one direction.

Therefore, the light emitted from the light emitting unit 210 passes through the polarizing filter 500, and the wave of the light is performed in one direction, and the light in which the wave of the light is performed in one direction is as shown in FIG. When the transfer tape 150 made of a transparent or translucent material passes around the transfer hole 160, the light is transmitted as it is and is received by the light receiving unit 220.

At this time, a part of the light emitted from the light emitting unit 210 is blocked by the polarizing filter 500. As a result, only a part of the total amount of light emitted from the light emitting unit 210 is received by the light receiving unit 220.

On the other hand, while the transfer tape 150 is being transferred between the light emitting unit 210 and the light receiving unit 220 while the light is being emitted from the light emitting unit 210, as shown in FIG. 9, it is centered on the light emitting unit 210 and the light receiving unit 220. When the transfer hole 160 is located, the light whose light wave is unidirectionally generated by the polarizing filter 500 is refracted or scattered by the peripheral edge of the transfer hole 160 and spreads in all directions without straightness. The amount of light received by the 220 is instantaneously reduced.

That is, at the time when the transfer hole 160 of the transfer tape 150 passes through the center of the light emitting unit 210 and the light receiving unit 220, light loss due to refraction or scattering of light due to the edge portion of the transfer hole 160 occurs. Since the amount of light received from the light receiving unit 220 is momentarily reduced, the control unit 300 calculates the distance between the center of the transfer hole 160 of the transfer tape 150 and the sprocket 130 based on the light amount signal transmitted from the light receiving unit 220. The drive and drive speed of the sprocket 130 can be controlled.

Therefore, the transfer holes 160 of the transfer tape 150 are accurately meshed with the teeth of the sprocket 130.

On the other hand, FIGS. 10 and 11 are configuration diagrams schematically showing the configuration and operation relationship of the hole sensing unit provided in the supply device for the electronic component transfer tape according to another embodiment of the present invention. FIG. 10 is a configuration diagram showing an operation relationship in which the light emitted from the light emitting unit of the hole sensing unit passes around the transfer hole of the transfer tape, and FIG. 11 is a configuration diagram showing the operation relationship in which the light emitted from the light emitting unit of the hole sensing unit is transferred. It is a block diagram which shows the operation relation which passes through a transfer hole of a tape.

As shown in FIGS. 10 and 11, when the polarizing filter 500 is arranged between the light emitting unit 210 forming the hole sensing unit 200 and the light receiving unit 220, the polarizing filter 500 is located between the light emitting unit 210 and the light receiving unit 220. It may be placed between the transfer tape 150 passing through the light receiving unit 220 and the light receiving unit 220.

That is, unlike FIGS. 8 and 9, the polarizing filter 500 may be arranged between the light receiving unit 220 and the transfer tape 150.

Therefore, the light emitted from the light emitting unit 210 is transmitted as it is when it passes around the transfer hole 160 with the transfer tape 150 made of a transparent or translucent material, and the transmitted light passes through the polarizing filter 500 and is transmitted. Light is received by the light receiving unit 220 in a state where the wave motion is performed in one direction.

At this time, a part of the light emitted from the light emitting unit 210 is blocked by the polarizing filter 500, so that only a part of the total amount of light emitted from the light emitting unit 210 is received by the light receiving unit 220.

Further, while the transfer tape 150 is transferred between the light emitting unit 210 and the light receiving unit 220 while the light is emitted from the light emitting unit 210, as shown in FIG. 11, the center of the light emitting unit 210 and the light receiving unit 220. When the transfer hole 160 is located, the irradiated light is refracted or scattered by the edge of the transfer hole 160 and spreads in all directions without having straightness, and the light spread in this way is waved by the polarizing filter 500. Is performed in one direction, and the amount of light received by the light receiving unit 220 is momentarily reduced.

That is, at the time when the transfer hole 160 of the transfer tape 150 passes through the center of the light emitting unit 210 and the light receiving unit 220, light loss due to refraction or scattering of light due to the edge portion of the transfer hole 160 occurs. The light in which the loss occurs is filtered by the polarizing filter 500, and the amount of light received from the light receiving unit 220 is momentarily reduced by the wave motion of the light being performed in one direction.

Therefore, the control unit can control the drive and drive speed of the sprocket 130 by calculating the distance between the center of the transfer hole 160 of the transfer tape 150 and the sprocket 130 based on the light intensity signal transmitted from the light receiving unit 220. As a result, the transfer hole 160 of the transfer tape 150 is accurately meshed with the teeth of the sprocket 130.

FIG. 12 is a graph showing the amount of light received by the light receiving unit 220 of the hole sensing unit 200 according to FIGS. 8 to 11. As described above, when the center of the transfer hole 160 passes through the center of the light emitting unit 210 and the light receiving unit 220 when the transfer hole 160 of the transfer tape 150 passes, the position corresponding to the edge portion of the transfer hole 160 momentarily passes. It can be seen that the amount of light received is reduced.

13 and 14 are structural views schematically showing the configuration and operation relationship of the hole sensing unit provided in the supply device for the electronic component transfer tape according to the other embodiment of the present invention. FIG. 13 is a configuration diagram showing an operating relationship in which the light emitted from the light emitting unit of the hole sensing unit passes around the transfer hole of the transfer tape, and FIG. 14 is a configuration diagram showing the operation relationship in which the light emitted from the light emitting unit of the hole sensing unit is transferred. It is a block diagram which shows the operation relation which passes through a transfer hole of a tape.

As shown in FIGS. 13 and 14, a polarizing filter 500 may be arranged between the light emitting unit 210 forming the hole sensing unit 200 and the light receiving unit 220. In this case, the polarizing filter 500 includes the light emitting unit 210 and the light receiving unit 220. It may be arranged between the transfer tape 150 and the light emitting unit 210 passing between the transfer tape 150 and the light receiving unit 220, respectively.

When the polarizing filter 500 is arranged between the transfer tape 150 and the light emitting unit 210 and between the transfer tape 150 and the light receiving unit 220 in this way, the light emitting unit 210 and the light receiving unit 210 and the light receiving unit are received in the same manner as in the above-described embodiment. When the transfer hole 160 of the transfer tape 150 passes through the center of the unit 220, the amount of light received by the light receiving unit 220 is momentarily reduced due to light scattering and refraction by the edge of the transfer hole 160. Since it is the same as the above-described embodiment, the description thereof will be omitted.

For reference, when the polarizing filter 500 is arranged between the transfer tape 150 and the light emitting unit 210 and between the transfer tape 150 and the light receiving unit 220, the polarizing filter 500 is arranged in one of them. Since the light loss can be further larger than in the case, the amount of light received by the light receiving unit 220 is further reduced as compared with the above-described embodiment.

Those who have ordinary knowledge of the technical field to which the present invention belongs can understand that the present invention can be implemented in other specific forms without changing its technical ideas and essential features. Therefore, it should be understood that the above embodiments are exemplary in all respects and are not limiting. The scope of the present invention is indicated by the scope of claims described later rather than the above detailed description, and all modified or modified forms derived from the meaning and scope of the claims and the concept of equality thereof are included in the scope of the present invention. Must be interpreted as included.

130 Sprocket 150 Transfer tape 160 Transfer hole 200 Hole sensing unit 210 Light emitting unit 220 Light receiving unit 300 Control unit 500 Polarizing filter

Claims (4)

Transfer tape, which is a transparent or translucent material with multiple transfer holes,
A hole sensing unit that is placed on the transfer path of the transfer tape and senses the transfer hole of the transfer tape to be transferred.
A sprocket that meshes with the transfer hole of the transfer tape and transfers the transfer tape to a component mounting position.
A control unit that calculates the distance between the center of the transfer hole and the sprocket from the signal detected by the hole sensing unit and controls the driving distance and the driving speed of the sprocket according to the calculated distance.
The hole sensing unit is
A light emitting unit that irradiates light and
A light receiving unit that receives light emitted from the light emitting unit and transmits a signal corresponding to the amount of light received by the control unit.
A polarizing filter between the light emitting unit and the light receiving unit, in which the center of the transfer hole of the transfer tape is the hole sensing portion while the transfer tape moves across between the light emitting unit and the light receiving unit. when passing, the reduced amount of light transmitted by the edge of the transport holes, senses the center of the presence or absence of the transfer hole and the transfer holes, a polarization filter,
A tape feeder for transferring electronic components, including. The polarizing filter is
The electronic component transfer tape supply device according to claim 1 , which is arranged between the light emitting unit and the transfer tape. The polarizing filter is
The electronic component transfer tape supply device according to claim 1 , which is arranged between the light receiving unit and the transfer tape. The polarizing filter is
The electronic component transfer tape supply device according to claim 1 , which is arranged between the light emitting unit and the transfer tape and between the light receiving unit and the transfer tape.

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