KR20020069639A - Device of tape automatic cutting for surface mounting machine - Google Patents

Abstract

PURPOSE: An automatic tape cutter of a surface mounted tape is provided to reduce an unnecessary flow line and an operating time of a worker and improve a mounting error due to a slack tape by simplifying a structure of the automatic tape cutter. CONSTITUTION: A DC motor(20) provides rotary power to a movable horizontal blade(12). The rotary power of the DC motor(20) is transmitted to an eccentric cam by a drive gear(40) and a driven gear(58). A limit switch(34) is used for designating a basic position of the movable horizontal blade(12) as a starting point. A timer is used for controlling operations of the DC motor(20) according to a switching operation of the limit switch(34). The eccentric cam is used for changing the rotary power to the straight movement. A cam floor(26b) is installed in the driven gear(58) in order to move the movable horizontal blade(12) to a straight direction. A shaft(14) and an LM bush(10) are used for guiding the movement of the movable horizontal blade(12). A synchro-shaft is used for transmitting the rotary power of the DC motor(20).

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 problems as described above is to provide an automatic tape cutting device for a surface mounter that can reduce unnecessary movement of the operator, and save time.

Another object of the present invention is 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.

Still another object of the present invention is to provide an automatic tape cutting apparatus for a surface mounter, which can increase the utilization of the internal space by simplifying the structure of the automatic tape cutter, etc., and to enable a more stable and reliable tape cutting operation.

The present invention according to the first aspect for achieving the object as described above is provided with a fixed horizontal blade and a moving horizontal blade, the DC motor for transmitting power to the moving horizontal blade, and adjusts the operation of the DC motor in time A timer, a spur gear train for transmitting the rotational force generated by the DC motor to the eccentric cam, an eccentric cam for converting the rotational force transmitted from the gear train into a linear motion, and a linear movement of the horizontal blade in close contact with the eccentric cam. Cam follower set to make, the inlet for guiding the tape from the parts supply device having the fixed horizontal blade and the movable horizontal blade, the box for storing the cut tape, the shaft and LM for guiding the linear movement of the moving blade For surface mounter having a bushing and having a bush which can transmit the rotational force of the DC motor to the left and right sides of the device simultaneously It proposes a tape automated cutting device.

1 is a side view showing the configuration of an automatic tape cutting device for an eccentric cam type surface mounter according to a first 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 plan view showing a spring return state of the tape cutter shown in FIG.

5A and 5B are side views showing an operating state of the automatic tape cutting device shown in FIG.

Figure 6 is a side view showing the configuration of the automatic tape cutting device of the eccentric cam flower according to a second embodiment of the present invention.

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

8A to 8B are side views showing an operating state of the automatic tape cutting device shown in FIG.

FIG. 9 is a flowchart illustrating a control method of the controller shown in FIGS. 1 and 2.

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

10: fixed horizontal blade 12: moving horizontal blade

16: eccentric cam 18: tension spring

20: drive motor 24: controller

26a: Cam Followers Set 26b: Camflower

34: limit switch 42: synchro shaft

60: camblock

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.

First, the automatic tape cutting device for a surface mounter to be proposed in the present invention is classified into an eccentric cam type tape cutter and an eccentric cam flower type tape cutter according to a power transmission method, and their detailed configurations will be described in the following embodiments. It will be clearly understood by 1,2.

The configuration of the tape automatic cutting device of the eccentric cam type according to the first embodiment of the present invention is as shown in Figs. Referring to the drawings, the device to be implemented in the present invention includes a fixed horizontal blade 10 and a horizontal horizontal blade 12 for cutting the tape directly.

The outer case 38 has an inlet 32 for guiding the tape into the cutting device of the present invention, and the box 30 is a space capable of holding the cut tape. The leveling foot 36 artificially adjusts the height of the cutting device and balances the cutting device.

The eccentric cam 16 linearly moves the movable horizontal blade 12, and the DC motor 20 provides a driving force for driving the eccentric cam 16. The shaft 14 becomes a reference axis when the moving horizontal blade 12 makes a linear movement, and the LM bush 10 contacts the shaft 14 to guide linearly. The cam follower set 26a serves to gently push the movable horizontal blade 12 in contact with the eccentric cam 16 described above, and the tension spring 18 has the cam follower set 26a always eccentric. Pull to contact the outer ring of the cam (16).

The controller 24 is composed of software and hardware for directly controlling the operation of the cutting device of the present invention, and the limit switch 34 is used as an interrupt for designating the basic position of the aforementioned horizontal blade 12 as the origin. The emergency stop button 52 installed in front of the cutting device described above is a button for coping with an emergency, and the timer 46 is for giving a delay time between the operation and the operation of the cutting device of the present invention. The I / O switch 48 is a switch for setting the operation preparation mode, and the on / off switch 50 is a switch for supplying power to the cutting device of the present invention.

On the other hand, as shown in Figure 2 the drive shaft 40 for transmitting the driving force generated in the DC motor 20 to the left / right side of the cutting device of the present invention at the same time on the shaft of the above-described DC motor 20 is Is installed. The drive gear 40 is meshed with a driven gear 58 which transfers the aforementioned driving force to the synchro shaft 42 again. At this time, the driven gear 58 is attached to the eccentric cam 16, the eccentric cam 16 serves to push the cam follower set (26a).

On the other hand, as shown in FIG. 4, the above-described eccentric cam 16 is attached to the cam follower set 26a, and the movable horizontal blade 12 is assembled to the cutter frame 56 moving together. A tension spring 18 is connected to the follower 26a, the spring bracat 54 and the spring bracat 54. On the other hand, the LM bush 28 is fastened to the cutter frame 56 for smooth movement, and the LM bush 28 contacts the shaft 14 to serve as a reference for forward and rearward movement.

Hereinafter, an operation process of the automatic tape cutting apparatus using the eccentric cam method configured as described above will be described in detail with reference to FIGS. 5 and 9.

1. Operate in normal mode ;

When the on / off switch 50 for supplying power to the above-described automatic cutting device is turned on, power is supplied to the cutting device. In the I / O switch 48 which switches to the operation preparation mode of the DC motor 20 after power is supplied to the delivery device, when the I button of the I / O switch 48 is pressed, the DC motor 20 ) Rotates arbitrarily, catches the signal of the limit switch 34, and finds the reference position of the horizontal blade 12 to stop. This is the end of the preparation for use of the cutting device of the present invention.

After the preparation is completed according to the above-described operation, the controller 24 of the cutting device counters the time as shown in FIG. 9 and rotates the DC motor 20 when the delay time set by the timer 46 is reached. The rotational force of the DC motor 20 is transmitted to the eccentric cam 16 by the drive gear 40 and the driven gear 58, which pushes the cam follower set 26a while rotating. . The cam follower set 26a is fixed to the cutter frame 56 to which the movable horizontal blade 12 is assembled, thereby receiving the rotational movement of the eccentric cam 16 to convert the horizontal horizontal blade 12 into a linear motion. give. At this time, the LM bush 28 is assembled to the cutter frame 56 to which the movable horizontal blade 12 is assembled, thereby performing a linear movement on the shaft 14 which is a linear guide surface. Subsequently, as the movable horizontal blade 12 and the fixed horizontal blade 10 cross each other, the tape between the two blades is cut.

Thereafter, after the tape is cut, the eccentric cam 16 is continuously rotated and the cam follower set 26a is kept in close contact with the outer ring of the eccentric cam 16 while returning by the spring force of the tension spring 18. Therefore, the horizontal blade 12 moves back to the origin. At this time, in the process of returning, the limit switch 34 is contacted, and the controller 24 receiving the contact signal of the limit switch 34 immediately stops the rotation of the DC motor 20 to move the horizontal blade to the initial starting position ( 12) to be located.

Next, the controller 24 calculates a counter again and repeats the above-described operation.

2. Run as test motor ;

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.

The configuration of the automatic tape cutting device of the eccentric cam flower type according to the second embodiment of the present invention is as shown in Figs. Referring to the drawings, the device to be implemented in the present invention includes a fixed horizontal blade 10 and a horizontal horizontal blade 12 for cutting the tape directly.

The outer case 38 has an inlet 32 for guiding the tape into the device, and the box 30 is a space that can hold the cut tape. The leveling foot 36 artificially adjusts the height of the cutting device and balances the cutting device.

The cam block 60 is directly coupled to the cutter frame 56 to which the above-described horizontal horizontal blade 12 is coupled to transmit a linear motion, and the driven gear 58 is inserted into the slot of the cam block 60. The cam camer 26b is assembled to produce a rotational motion. The drive gear 40 transmits the driving force of the DC motor 20 to the driven gear 58 described above. At this time, the DC motor 20 provides a driving force for rotating the drive gear 40. The shaft 14 becomes a reference axis when the moving horizontal blade 12 makes a linear movement, and the LM bush 10 contacts the shaft 14 to guide linearly.

The controller 24 is composed of software and hardware for directly controlling the operation of the cutting device of the present invention, and the limit switch 34 is used as an interrupt for designating the basic position of the aforementioned horizontal blade 12 as the origin.

The emergency stop button 52 installed in front of the cutting device described above is a button for coping with an emergency, and the timer 46 is for giving a delay time between the operation and the operation of the cutting device of the present invention. The I / O switch 48 is a switch for setting the operation preparation mode, and the on / off switch 50 is a switch for supplying power to the cutting device of the present invention.

On the other hand, as shown in Figure 7 in order to transmit the same driving force generated in the above-described DC motor 20 to the left / right side of the cutting device of the present invention at the same time transmitted from the drive gear 40 and the drive gear 40 Cam having a driven gear (58) for transmitting the driven force is subordinate to the synchro shaft 42, the cam flow (26b) attached to the driven gear (58) is coupled to the cutter frame (56) The outer ring is inserted into the slot of the block 60.

Hereinafter, an operation process of the automatic tape cutting device using the eccentric cam flower method configured as described above will be described in detail with reference to FIGS. 8 and 9.

1. Operate in normal mode ;

When the power on / off switch 50 for supplying power to the above-described automatic cutting device is turned on, power is supplied to the cutting device. In the I / O switch 48 which switches to the operation preparation mode of the DC motor 20 after power is supplied to the delivery device, when the I button of the I / O switch 48 is pressed, the DC motor 20 ) Rotates arbitrarily, catches the signal of the limit switch 34, and finds the reference position of the horizontal blade 12 to stop. This completes the preparation for use of the cutting device of the present invention.

After the preparation is completed according to the above-described operation, the controller 24 of the cutting device counters the time as shown in FIG. 9 and rotates the DC motor 20 when the delay time set by the timer 46 is reached. The rotational force of the DC motor 20 is transmitted to the driven gear 58 by the drive gear 40 to eccentrically rotate the cam flow gear 26b coupled to the driven gear 58. At this time, the outer diameter of the cam flower 26b is inserted into the slot of the cam block 60, thereby changing the rotational movement of the driven gear 58 to the linear motion of the cam block 60.

Next, when the above-described cam block 60 has a linear motion, the cutter frame 56 connected to the cam block 60 performs a linear motion, and the horizontal horizontal blades connected to the cutter frame 56 ( 12) also interlocked to make a linear movement. At this time, the LM bush 28 is assembled to the cutter frame 56 to which the movable horizontal blade 12 is assembled, thereby performing a linear movement on the shaft 14 which is a linear guide surface. Subsequently, as the movable horizontal blade 12 and the fixed horizontal blade 10 cross each other, the tape between the two blades is cut.

Subsequently, after the tape is cut, the cam gear 26b is eccentrically rotated while the driven gear 58 is rotated, and the cam block 60 in which the cam flow 26b is inserted into the slot is In the opposite direction in the advancing direction, the moving horizontal blade 12 returns to the origin again. At this time, in the process of returning, the limit switch 34 is contacted, and the controller 24 receiving the contact signal of the limit switch 34 immediately stops the rotation of the DC motor 20 to move the horizontal blade to the initial starting position ( 12) to be located.

Next, the controller 24 calculates a counter again and repeats the above-described operation.

2. Run as test motor ;

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 existing 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 tape cutting device for a surface mounter having a fixed horizontal blade and a movable horizontal blade, A DC motor for transmitting power to the movable horizontal blade; A limit switch for designating a basic position of the horizontal blade as an origin and for switching the driving force of the DC motor; A timer capable of adjusting the operation of the DC motor in time according to the switching of the limit switch; A spur gear train for transmitting the rotational force generated by the DC motor to the eccentric cam; An eccentric cam for converting the rotational force transmitted from the spur gear train into a linear motion; A cam follower set in close contact with the eccentric cam and linearly moving a horizontal moving blade; Eccentric cam-type surface mounter having a shaft for guiding the linear movement of the horizontal blade and LM bush, and a synchro shaft for transmitting the rotational force of the DC motor to the left and right of the device at the same time Tape automatic cutting device. A tape cutting device for a surface mounter having a fixed horizontal blade and a movable horizontal blade, A DC motor for transmitting power to the movable horizontal blade; A limit switch for designating a basic position of the horizontal blade as an origin and for switching the driving force of the DC motor; A timer capable of adjusting the operation of the DC motor in time according to the switching of the limit switch; A spur gear train including a drive gear and a driven gear to transmit the rotational force generated by the DC motor to the cam block; A cam flower mounted on the driven gear and receiving a rotational force from the spur gear train to linearly move the movable horizontal blade; A cam block having a slot for inserting the outer ring of the cam flower to be in contact sliding; Eccentric cam flower type surface having a shaft for guiding the linear movement of the horizontal blade and the LM bush, and a synchro shaft which can transmit the rotational force of the DC motor to the left and right sides of the device at the same time Automatic tape cutting machine for mounting machine. 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.