JPH066324U - Substrate transfer device - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide an inexpensive conveyor width adjusting mechanism for an upstream device and a downstream device. [Structure] The motor control unit A (2) is instructed by a width change command unit (26) of the screen printing machine (1).
5) controls the drive motor (22) to adjust the width of the conveyors (12A) (12B) of the screen printing machine (1). Then, the conveyor width adjusting operation of the conveyors (12A) (12B) is delayed by the set time set in the on-delay timer relay (37), and the motor control unit B (2
9) controls the drive motor (23) to match the width of the conveyors (15A) (15B) of the conveyor device (16) with the width of the conveyors (12A) (12B) of the screen printing machine (1).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a substrate transfer device that transfers a substrate from an upstream device to a downstream device.

[0002]

[Prior art]

 As a conventional technique of this kind, there is one disclosed in Japanese Utility Model Laid-Open No. 60-22864. This is to adjust the conveyor of the upstream side device and the downstream side device according to the substrate width when handling substrates with different substrate widths.

However, each device has a similar variable width mechanism, so that the device is expensive.

[0004]

[Problems to be solved by the device]

 Therefore, it is an object to provide an inexpensive conveyor width adjusting mechanism for an upstream device and a downstream device.

[0005]

[Means for Solving the Problems]

 Therefore, the present invention is a board transfer device that changes the width of each conveyor according to the board width of the board to be handled when transferring the board from the upstream side device to the downstream side device. A change command unit, a first motor control unit that controls a first drive motor that adjusts the conveyor width of the upstream side device by a command from the width change command unit, and a downstream by a command from the width change command unit. A second motor control unit that controls a second drive motor that adjusts the conveyor width of the side device and a timer that transmits the command from the width change command unit to the second motor control unit with a slight delay are provided. It is a thing.

[0006]

With the above configuration, the first motor control unit controls the first drive motor to adjust the conveyor width of the upstream device according to a command from the width change command unit of the upstream device. Then, the second motor control unit controls the second drive motor to delay the conveyor width adjustment operation of the conveyor by the set time set by the timer so that the conveyor width of the downstream device is set to the upstream device. Match the conveyor width.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, (1) is a screen printer as an upstream side device.

(2) is a printed circuit board, which is an object to be printed, on which cream solder is applied in a desired pattern so that electronic components can be mounted on the upper surface, and is, for example, a rectangular thin plate.

(3) is a mounting table for mounting the substrate (2) and adsorbing the substrate (2) on the upper surface by a vacuum pump (not shown), and (4) is the mounting table (3) described later. It is a moving table that is moved in a direction orthogonal to the moving direction of the pair of squeegees (11A) and (11B). (5) (5) is for supporting the substrate (2) at the coating position, and is a support that can be moved by a cylinder (not shown), and can be supported not only on the left and right sides but also on the front and back by a support (not shown). I support you. (6) is a drive motor as means for moving the moving table (4) in the orthogonal direction as described above, and (7) and (7) are cylinders for moving the moving table (4) up and down.

Reference numeral (8) denotes a screen, which has, for example, a substantially square shape and is composed of a screen plate (9) formed in a desired circuit pattern and a screen frame (10) surrounding the plate (9). The screen plate (9) may be a metal / mesh mixed type in which the main part is a metal and the periphery of the main part is a mesh, or may be all metal.

While pressing the screen plate (9) of the screen (8) against the substrate (2), (11A) and (11B) move horizontally by a driving means (not shown) to move the screen plate (10) on the screen plate (10). This is a pair of squeegees for applying cream solder onto the substrate (2), and the pair of squeegees (11A) (11B) are alternately lowered and raised for each coating operation. That is, when applying the squeegee (11A) to the substrate (2), the squeegee (11A) is lowered and the other squeegee (11B) is raised, and the other squeegee (11B) is applied. In this case, the squeegee (11B) is lowered and the squeegee (11A) is raised.

Reference numerals (12A) and (12B) are discharge conveyors for discharging the substrate (2) for which screen printing has been completed by a belt (52) moved via a pulley (51) by a drive motor (not shown). The conveyors (12A) and (12B) have their widths changed by moving the conveyor (12B) to and from the conveyor (12A) by the rotation of the screw shaft (50) driven by the drive motor (22). Adjusted. (13) is an origin detection photosensor attached to one end of the conveyor (12B), and detects an origin detection photosensor dog (not shown) installed on the base (1A) of the screen printing machine (1). .

(15A) and (15B) are conveyors of a conveyor device (16) as a downstream side device, which conveys the substrates (2) conveyed from the discharge conveyors (12A) and (12B) to the conveyors (12A) and (12B). In the same manner as in (1), a belt (55) is moved by a drive motor (not shown) via a pulley (54). Further, the conveyor width is also adjusted by the rotation of the screw shaft (56) by the drive of the drive motor (23). Reference numeral (17) is an origin detection photosensor attached to the conveyor (15B) and detects the origin detection photosensor dog (18) installed on the base (16A) of the conveyor device (16). Reference numeral (19) is a width detection photosensor provided on the conveyor (15B), and detects the width detection photosensor dog (20) installed on the conveyor (12B).

A motor control unit A (25) drives and controls the drive motor (22) by a drive command based on the width data in the width change command unit (26).

(27) is a rotation number detection unit of the drive motor (22).

(29) is a motor control unit B for driving and controlling the drive motor (23). The motor control unit B (29) will be described below with reference to FIG.

(30) is a DC power supply for the screen printing machine (1), and (31) is a DC power supply for the conveyor device (16).

(32), (33), (34), (35) and (36) are relay coils, and are (32A), (33A) (33B) (33C), (34A) (34B) (34C). , (35A) and (36A) (36B) are relay contacts, respectively.

(37) is an on-delay timer relay, which is set to 5 seconds in this embodiment. (37A) is a relay contact.

(39) is an AC power supply.

(40) and (41) are solid state relay coils, and (40A) and (41A) are solid state relay contacts.

(17A), (17B) and (17C) are origin detection photosensor output terminals, and (19A) is a width detection photosensor output terminal.

(48) is a brake pack.

(49) is a width change permission switch for starting the operation of changing the conveyor width of the conveyors (15A) and (15B).

The operation will be described below.

First, the placing table (3) is below the transport level of the discharge conveyors (12A) (12B), and the substrate (2) placed on the conveyors (12A) (12B) is transported. The conveyors (12A) and (12B) are stopped at the placement table (3).

Next, the table (3) is raised from the transfer level by the cylinder (7), the substrate (2) is placed on the table (3), and the table (3) is sucked onto the table (3). It is moved to the printing station together with the moving table (4) by the operation of the drive motor (6). Further, the cylinder (7) raises the printing level, and the support (5) and the like support the substrate (2). Then, for example, one of the squeegees (11A) descends as shown in FIG. 2 and horizontally moves so that the cream solder on the screen plate (9) is transferred to the substrate ( 2) After application, raise the squeegee (11A).

After that, the suction of the placement table (3) is released, and the support by the support table (5) and the like is also released, and the syringe is moved to a level lower than the transport level of the conveyors (12A) and (12B). The tables (3) and (4) are lowered by (7), and the substrate (2) is placed on the conveyors (12A) and (12B) and conveyed. Then, the drive motor (6) returns the tables (3) and (4) to their original positions again, and the one-print coating operation is completed.

Thereafter, the print application operation is continued in the same manner.

Further, the operation of adjusting the conveyor width when handling boards (2) having different board widths will be described.

First, with the width change permission switch (49) turned on, the conveyor width changing automatic setup work of the screen printing machine (1) is started.

A drive command is issued to the motor control unit A (25) based on the board width data in the width change command unit (26), the drive motor (22) is driven, and the conveyor (12B) is moved to the conveyor (12A). The origin detection photosensor (13) is moved in the direction away from the origin until the origin detection photosensor dog is detected. Then, the drive motor (22) is rotated in the reverse direction to prepare the conveyor (12B) at the predetermined position shown in FIG. At this time, the rotation number of the drive motor (22) is detected by the rotation number detection unit (27).

When the drive motor (22) is rotated by the drive command issued from the width change command unit (26), the relay coil (36) is excited and the relay contacts (36A) and ( 36B) is closed, the on-delay timer relay (37) is activated, and after the set time (5 seconds) has elapsed, the relay contact (37A) is opened and the relay contact (37B) is closed. The coil (32) is excited to close the relay contact (32A), the relay coil (33) is excited to close the relay contacts (33A) and (33B), and the relay contact (33C) is opened. The excited relay coil (35) is demagnetized, the relay contact (35A) is opened, and the brake pack (48) becomes non-conductive.

On the other hand, by closing the relay contact (33B), the solid-state relay coil (40) is excited to close the solid-state relay contact (40A), and the drive motor (23) of the downstream conveyor device (16) is closed. ) Is also driven and the conveyor (15B) is moved away from the conveyor (15A) until the origin detection photosensor (17) detects the origin detection photosensor dog (18) (see FIG. 7). When the origin is detected, the origin detection photosensor output terminal (17A) is opened, the relay coil (33) is degaussed, the relay contact (33B) is opened, and the solid state relay coil (40) is degaussed. The state relay contact (40A) is opened, and the rotation of the drive motor (23) is stopped.

Further, the origin detection photosensor output terminal (17B) is closed, the relay coil (34) is excited, the relay contacts (34A) and (34B) are closed, and the relay contact (34C) is opened. . The solid state relay coil (41) is excited by the closing of the relay contact (34B), the solid state relay contact (41A) is closed and the drive motor (23) is rotated in the reverse direction, and the width detection photo sensor (19) is moved to the conveyor. It is moved until the width detection photosensor dog (20) provided in (12B) is detected (see FIG. 8). When the dog (20) is detected, the width detection photosensor output terminal (19A) is opened, the relay coil (34) is demagnetized, the relay contact (34B) is opened, and the solid state relay coil (41) is opened. ) Is demagnetized, the solid state relay contact (41A) is opened, and the reverse rotation of the drive motor (23) is stopped. At this time, the relay coil (35) is excited by closing the relay contacts (33C), (34C) and the origin detection photosensor output terminal (17C), and the relay contact (35A) is opened, and the brake pack ( 48) is conducted. As a result, the conveyors (12A) (12B), (15A) (15B) correspond to the width of the base plate (2).

The upstream device may be a coating device that coats the substrate with an adhesive or a component mounting device that mounts a chip component.

[0038]

[Effect of device]

 As described above, according to the present invention, it is possible to provide the inexpensive conveyor width adjusting mechanism for the upstream side device and the downstream side device.

[Brief description of drawings]

FIG. 1 is a configuration circuit diagram of a substrate substrate transfer device.

FIG. 2 is a front view of a screen printing machine.

FIG. 3 is a plan view of a substrate transfer device.

FIG. 4 is a side view of a substrate substrate transfer device.

FIG. 5 is a circuit diagram of a motor control unit.

FIG. 6 is a plan view of a substrate transfer device.

FIG. 7 is a plan view of a substrate substrate transfer device.

FIG. 8 is a plan view of a substrate substrate transfer device.

FIG. 9 is a diagram showing a flowchart of a width changing operation.

[Explanation of symbols]

 (1) Screen printer (2) Printed circuit board (12A) Conveyor (12B) Conveyor (13) Origin detection photo sensor (15A) Conveyor (15B) Conveyor (16) Conveyor device (17) Origin detection photo sensor (18) Origin Dog for detection photo sensor (19) Width detection photo sensor (20) Dog for width detection photo sensor (22) Drive motor (23) Drive motor (25) Motor control unit A (26) Width change command unit (29) Motor control Unit B (37) On-delay timer relay

Claims (1)

[Scope of utility model registration request] 1. A substrate transfer device for changing the width of each conveyor in accordance with the substrate width of a substrate to be handled when a substrate is transferred from an upstream device to a downstream device, wherein a width change provided in the upstream device. A command unit, a first motor control unit that controls a first drive motor that adjusts the conveyor width of the upstream device according to a command from the width change command unit, and a downstream device according to a command from the width change command unit A second motor control unit for controlling a second drive motor for adjusting the conveyor width of the second motor and a timer for transmitting the command from the width change command unit to the second motor control unit with a slight delay. Characteristic board transfer device.