KR100395677B1 - Device of tape automatic cutting for surface mounting machine - Google Patents

Abstract

The present invention includes a fixed horizontal blade for cutting the tape directly, and a rotary blade for cutting the tape while rotating; A DC motor for transmitting power to the rotary blades; A limit switch for designating a basic position of the rotary blade as an origin and for switching the driving force of the DC motor; A timer for controlling the operation of the DC motor in time; A gear train for transmitting the rotational force generated by the DC motor to the driven gear through a drive gear and a differential gear; A synchro shaft which simultaneously transmits the rotational force transmitted from the differential gear from left and right sides to the driven gear assembled with the rotary blades; An inlet for guiding the tape from the component supply device with the fixed horizontal blade and the rotary blade; A box for storing the cut tape; An automatic tape cutting device for a surface mounter comprising a shaft and a bearing for guiding rotation of the rotary blade is proposed.

Description

Tape cutting machine for surface mounter {DEVICE OF TAPE AUTOMATIC CUTTING FOR SURFACE MOUNTING MACHINE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mechanism for secondary processing of a part supply tape after supplying parts from a part supply device to a part mounter as a tape cutter for a part mounter. It relates to a device for cutting with.

Due to the development of component mounting equipment, it is indispensable to supply high-speed parts through the component supply device at the present time when the ultra-high speed component mounting machine is popularized, and thus, more and more tapes have to be processed from the component supply device. This required additional work that the operator would need to cut off the tape from time to time to handle the tape.

In addition, in order to focus the attention of the worker on a much more important part in the situation of minimizing the worker in the automated line that is becoming increasingly unmanned and sanctuary, a device capable of automatically cutting the tape was needed.

On the other hand, conventionally, a horizontal blade method, a rotary blade method and the like are used as a method of cutting a tape, and a pneumatic cylinder or a motor is used as a power source for driving each blade.

The equipment has been divided into tape cutters used in rotary high speed equipment and tape cutters used in X-Y high speed and general purpose equipment.

However, since the rotary blade cutter starts to push before the tape is cut because the angle formed by the two rotary blades is large, the tape cannot be cut if the tape is thick, but it continues to push the tape in one direction and eventually does not cut the parts supply device. There is a problem that deviates. In addition, if some parts, such as chip parts, come down to the cutter blade, there is a drawback of stopping the device because it can not cut.

Due to this reason, the use of the horizontal blade method has emerged, and it has become a method of simultaneously cutting a large amount of tape in a small space. However, this method also has a problem in that the impact during cutting and the contact surface pressure of the blade must be considered.

Accordingly, an object of the present invention for solving the above problems is to automatically cut the tape for the surface mounter to increase the utilization of the internal space by simplifying the structure of the automatic tape cutter, and to make the tape cutting work more stable and reliable. In providing a device.

Another object of the present invention is to provide an automatic tape cutting device for a surface mounter, which can reduce unnecessary movement of workers and save time.

It is still another object of the present invention to provide an automatic tape cutting device for a surface mounter, which improves the mounting defects caused by the sagging tape and the aforementioned problems.

The present invention according to the first aspect for achieving the above object is provided with a fixed horizontal blade for cutting the tape directly, and a rotary blade for cutting the tape while rotating; A DC motor for transmitting power to the rotary blades; A limit switch for designating a basic position of the rotary blade as an origin and for switching the driving force of the DC motor; A timer for controlling the operation of the DC motor in time; A gear train for transmitting the rotational force generated by the DC motor to the driven gear through a drive gear and a differential gear; A synchro shaft which simultaneously transmits the rotational force transmitted from the differential gear from left and right sides to the driven gear assembled with the rotary blades; An inlet for guiding the tape from the component supply device with the fixed horizontal blade and the rotary blade; A box for storing the cut tape; An automatic tape cutting device for a surface mounter comprising a shaft and a bearing for guiding rotation of the rotary blade is proposed.

1 is a side view showing the configuration of a tape cutting machine for a surface mounter of a rotary type according to an embodiment of the present invention.

2 is a plan view of the automatic tape cutting device shown in FIG.

3 is a front view of the automatic tape cutting device shown in FIG.

4 is a front view showing a left / right synchronous transfer state of the rotary tape cutter shown in FIG.

Figures 5a to 5d is a side view showing the operating state of the automatic tape cutting device shown in FIG.

6 is a flowchart illustrating a control method of the controller illustrated in FIG. 1.

<Description of the symbols for the main parts of the drawings>

10: fixed horizontal blade 12: rotary blade

18: driven gear 22: controller

28: limit switch 34: synchro shaft

38: timer

DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description of the reference numerals to the components of the drawings, it should be noted that the same reference numerals as much as possible even if displayed on different drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

According to an embodiment of the present invention, the configuration of the tape cutting machine for surface mounter proposed above is as shown in FIGS. 1 and 2. 1 and 2, the device to be implemented in the present invention includes a rotary blade 12 for cutting the tape while rotating with a fixed horizontal blade 10 for cutting the tape directly, the rotary blade 12 Is installed on the outer circumferential surface of the driven gear, which will be described later. In particular, one or more blades are provided to be offset from each other. The outer case 30 has an inlet 24 for guiding the tape into the cutting device of the present invention, and the box 26 is a space capable of holding the cut tape.

On the other hand, the present invention consists of a drive gear 14, a differential gear 16 and a driven gear 18 in a gear train for rotating the rotary blade 12, the driven gear 18 has a rotary blade ( 12) is assembled. DC motor 20 provides a driving force for driving the drive gear 14, and the above-described driven gear 18 and the shaft 46, which is a reference axis when the rotary blade 12 rotates; The bearing 48 is connected.

The synchro shaft 34 may simultaneously transmit the rotational force transmitted from the driving gear 14 to the differential gear 16 at the left and right sides of the cutting device, and the controller 22 may include software for directly controlling the operation of the cutting device. It consists of hardware. The limit switch 28 is used as an interrupt for designating the basic position of the rotary blade 12 as the origin, and the leveling foot 32 artificially adjusts the height of the cutting device and balances the cutting device.

Finally, the present invention includes a transformer 36 for power supply and conversion for supplying power to the cutting device, and an emergency stop button 44 for coping with an emergency situation. In addition, the present invention comprises a timer 38 for giving a delay time between the operation of the cutting device of the present invention, an I / 0 switch 40 for setting an operation preparation mode, and an on / off switch 42 for supplying power. .

Meanwhile, as shown in FIG. 4, a drive gear 14 for assembling the driving force generated by the DC motor 20 to the left and right sides of the cutting device is equally assembled on the shaft of the DC motor 20 described above. In addition, the drive gear 14 is meshed with a differential gear 16 which transfers the aforementioned driving force to the synchro shaft 34 again, and the differential gear 16 rotates in close contact with the driven gear 18. On the other hand, the above-described driven gear 18 is attached to the rotary blade 12, the rotary blade 12 is rotated as the driven gear 18 rotates. At this time, the bearing 48 is inserted in the rotating driven gear 18, and the shaft 46 which is in close contact with the inner ring of the bearing 48 and serves as the center of rotation is provided.

Hereinafter, an operation process of the automatic tape cutting device using the eccentric cam method configured as described above will be described in detail with reference to FIGS. 5 and 6.

1. Operate in normal mode ;

When the on / off switch 42 described above is switched "on", power is supplied to the cutting device of the present invention. In the I / O switch 40 which switches to the operation preparation mode of the DC motor 20 after power is supplied to the cutting device described above, the cutting device is pressed when the I button of the I / O switch 40 is pressed. While 20 rotates arbitrarily, it detects the signal of the limit switch 28, finds the reference position of the rotary blade 12, and stops. This is the end of the preparation for use of the cutting device of the present invention.

After the preparation, the controller 22 of the cutting device counters the time as shown in FIG. 6 and rotates the DC motor 20 when the delay time set by the timer 38 is reached. Subsequently, the rotational force of the DC motor 20 is transmitted to the rotary blade 12 through the drive gear 14, the differential gear 16, and the driven gear 18 constituting the gear train. At this time, the driven gear 18 rotates to rotate the rotary blade 12 which is fastened to the driven gear 18. At this time, the rotary blade 12 is rotated to cut the tape between the fixed blade 10 and the rotary blade 12.

Next, after the tape is cut, the DC motor 20 continues to rotate and the controller 22 checks the signal of the limit switch 28. At this time, the limit switch 28 is in contact with the rotating driven gear 18 and receives the interrupt signal as the contact is broken. The controller 22 receiving this signal immediately stops the rotation of the DC motor 20 so that the rotary blade 12 is positioned at the initial starting position.

After that, the controller 22 calculates a counter again and repeats the above-described operation.

2. Run in test mode ;

Setting the test mode is necessary for testing and finalizing the assembly prior to attaching the outer case 38. There are two DIP switches on the PCB of the controller 24. The mode can be changed. To change the test motor, change the dip switch to test mode.

After that, when the setting is changed to the test mode, the controller 24 ignores the setting value of the timer 46 and starts the operation with the self-programmed timer value. At this time, the sequence of operation is almost the same as the normal operation mode, except that the timer is not countered.

As described above, the automatic tape cutting apparatus according to the embodiment of the present invention achieves many effects as follows.

First, the present invention can save the time of the operator managing the component surface mounting apparatus and at this time the operator has the advantage of being able to do other work related work.

Secondly, productivity is improved because there is no need to stop the equipment in operation to cut the tape, which can contribute to the safety of the operator and the equipment by reducing the need for the operator to access the equipment.

Thirdly, the cutting property is superior to the cutter having a circular blade in the related art, and there is no case that the tape is pushed in, and the work can be performed even when the chip enters.

Fourth, by installing the blade and the frame separately, the blade can be replaced easily after a certain period of use, and also has a synergistic effect of simple maintenance.

Claims (3)

A fixed horizontal blade for cutting the tape directly, and a rotary blade for cutting the tape while rotating; A DC motor for transmitting power to the rotary blades; A limit switch for designating a basic position of the rotary blade as an origin and for switching the driving force of the DC motor; A timer for controlling the operation of the DC motor in time; A gear train for transmitting the rotational force generated by the DC motor to the driven gear through a drive gear and a differential gear; A synchro shaft which simultaneously transmits the rotational force transmitted from the differential gear from left and right sides to the driven gear assembled with the rotary blades; Automatic tape cutting device for a surface mounter comprising a shaft and a bearing for guiding the rotation of the rotary blade. According to claim 1, wherein the rotary blade is installed on the outer peripheral surface of the driven gear, at least one or more blades automatic cutting device for a surface mount machine, characterized in that installed opposite to each other. The method according to claim 1 or 2, A controller incorporating a blocking device to protect the DC motor from overload; An emergency stop button connected to the controller to emergency stop when an emergency occurs; An I / O switch for setting an operation preparation mode of the DC motor separately from power on / off; And a transformer for converting 220V and 110V voltages into 40V and 24V, and further comprising an on / off switch for connecting / blocking power supply to the cutting device.