KR100276482B1 - Tape Reel Feeding Device of Surface Mounter - Google Patents

Abstract

The present invention relates to a surface mounter for automatically mounting a surface mount component on a printed circuit board. According to the present invention, a drive wheel for transporting a tape reel to a frame is rotatably installed, and an upper surface of the frame is rotatably provided with a cover having an opening, and an opening and closing plate is provided on the cover, thereby providing a tape of a surface mounter. A reel feeding apparatus, comprising: a motor installed on a frame and repeating forward and reverse rotation for a set time; Conversion means for changing the rotational motion according to the drive of the motor into a linear motion; A slider fixed to the converting means and reciprocating by driving of a motor; A lever rotatably installed on all of the sliders to rotate the latch wheel; A latch rotatably installed on the frame to fix the latch wheel so that the driving wheel does not rotate in a reverse direction; Link means for maintaining a latched state of the latch holding the latch wheel when restoring the slider; An elastic member installed between the slider and the motor so as to elastically move the slider forward when the slider is advanced and gradually return by elasticity at the time of restoration; It is composed of a support bar that is fitted to the lower portion of the tape reel passing through the cover installed in the frame.

Description

Tape Reel Feeding Device of Surface Mounter

The present invention relates to a surface mounter for automatically mounting a surface mount component on a printed circuit board, and more specifically, peeling off the tape taped on the upper surface while transferring the tape reel by one pitch, and then into the recess of the tape reel. A tape reel feeding apparatus of a surface mounter, which allows a picker of a head portion to pick up an inserted surface mount component.

In recent years in the development of electrical and electronic products, the trend has been to increase the density, miniaturization, and diversification of electronic components, and the development thereof is becoming more and more intense.

In particular, Surface Mounting Technology (SMT) using surface mounters for assembly production of printed circuit boards (PCBs) used in electrical and electronic components is being accelerated.

The surface mounter is a core equipment of the surface mount assembly equipment for mounting a surface mounting device (SMD) on a printed circuit board. The surface mounter receives various surface mount components from a component supplyer and transfers them to the mounting position of the printed circuit board. Equipment to be mounted on the substrate.

Types are classified into high-speed machines and general-purpose machines according to their functions. The high-speed machines are configured to assemble many parts in a short time, so the mounting speed is high, which is suitable for mass production, but the mounting precision is low. Since the machine is configured to be suitable for the mounting of various parts, the mounting precision is high and the mounting of various parts is possible.

The surface mounter includes a feeder part for supplying mounting parts (hereinafter referred to as a `` tape feeder ''), an X-Y table part for determining a working position, a conveyor part for conveying a printed circuit board to be worked on, and a mounting part from a tape feeder. It consists of a head and the like which are picked up in sequence and mounted on a printed circuit board.

The tape feeder is inserted into the concave groove to transfer the tape taped with vinyl by one pitch with the vinyl peeled off so that the picker can sequentially pick up the mounting parts in the concave groove one by one.

1 is a front view showing a tape reel feeding apparatus of a conventional surface mounter, Figure 2 is a perspective view showing a state in which the cover is removed from the conventional feeding device, Figure 3 is a tape reel feeding apparatus of a conventional surface mounter A perspective view showing an opening and closing plate.

First, a motor 102 mounted on an intermediate portion of the frame 100 to generate power, a worm 103 fixed to an axis of the motor 102 and rotating as the motor is driven, and the worm 103 A sensor 104 installed close to the worm to detect the rotation angle of the worm and a worm gear 105 mounted to the worm so as to be engaged with the worm so as to switch the rotational force of the worm in a right direction; The drive wheel 107 provided in the frame 100 and the drive wheel of the worm gear 105 to move the tape reel in the direction of the arrow as the feed hole 98 formed on the tape reel 106 is rotated. A timing belt 109 connected between pulleys 96 and 97 fixed to 107 and transmitting the driving force of the motor 102 to the driving wheel 107 side, and the vinyl 111 from the tape reel 106. As the) peels off, the picker picks up the mounting parts inserted into the recess groove 92. An opening 112 formed in the cover to transfer the tape reel, and a bent piece 94 for closing the recessed groove so that the mounting part is not separated from the recessed groove 92 positioned in the opening during the transfer of the tape reel. Mounting the opening and closing plate 113, the guide groove 114 formed in the cover 110 to guide the sliding of the opening and closing plate, the drive means for moving forward and backward the opening and closing plate, and various components necessary for driving the motor Control board 115 and the like.

Therefore, in the state in which the cover 110 is opened, the feed hole 98 formed along one side of the tape reel 106 is inserted into the protrusion 94 of the driving wheel 107, and then the tape reel 106 is covered by the cover 110. When the cover 110 is closed and the cover 110 is closed, the mounting parts in the recessed grooves 92 are picked up by the picker while the tape reel 106 is transported by one pitch according to the driving of the motor 102. Can be mounted sequentially.

That is, when the motor 102 is driven by the application of power and the worm 103 is rotated, the sensor 104 detects the rotation angle of the worm and the tape reel 106 is conveyed by one pitch. It will stop running.

As such, when the motor 102 is driven so that the tape reel 106 is conveyed by one pitch, the power is transferred to the worm gear 105 engaged with the worm 103 in a state in which power is switched at right angles, thereby being fixed to the worm gear 105. The pulley 96 is rotated and thus the power is transmitted to the drive wheel 107 through the timing belt 109 to rotate the drive wheel 107 so that the tape reel 106 is conveyed by one pitch.

As described above, in the state in which the driving wheel 107 is conveyed by one pitch, the opening and closing plate 113 is positioned on the opening 112 to close the opening 112. Even if an impact due to vibration or the like is applied to the feeder, the mounting parts in the concave groove 108 are not separated outward.

When the tape reel 106 is conveyed by one pitch by the above-described operation, and the mounting part in the recessed groove 92 is positioned on the opening 112, the opening and closing plate 113 is formed in the cover 110. Since the opening 112 is opened by moving in the direction of the arrow along 114, the picker can absorb the mounting parts located in the recessed groove 92 and mount them on the printed circuit board.

At this time, the vinyl 111 peeled off from the tape reel 106 is wound on a separate bobbin.

On the other hand, after the mounting part is mounted on the printed circuit board from the recessed groove 92 located on the opening 112, the opening and closing plate 113 is moved to the left side by the driving means and the opening 112 is opened by the opening and closing plate. ), The motor 102 is driven again to transfer the tape reel 106 by one pitch, so that the mounting parts contained in the recessed grooves 92 of the tape reel 106 are sequentially mounted on the printed circuit board. You can do it.

In this case, the driving force of the motor 102 is transmitted to the driving wheel 107 using the worm 103 and the worm gear 105 without using a spur gear.

Because, when using a spur gear, the motor 102 to be installed in the frame 100 should be installed in parallel with the rotation axis of the driving wheel, so that the width of the tape feeder is increased, thereby increasing the number of tape feeders installed in the surface mounter. Because it is limited.

Therefore, in order to mount a large number of components, it is necessary to install several surface mounters, which are expensive equipments, and thus, the power transmission direction of the motor 102 is switched using the worm 103 and the worm gear 105, and then the timing belt 109 is used. To transmit power to the drive wheel 107.

However, this method had the following problems.

First, the number of parts is increased because the opening and closing plate 113 is moved forward and backward by a separate driving means to prevent the mounting parts located on the open part 112 from being dislodged by impact or the like during the transfer of the tape reel 106. This increases the volume of the tape feeder as well as increases the cost of manufacturing.

Second, since the power of the motor 102 is transmitted to the driving wheel 107 by the timing belt 109, a separate sensor 104 must be used to control the driving of the motor, and accordingly, a close loop loop) control is required, so a complicated control board 15 is required.

Third, since the width of the bent piece 94 of the opening and closing plate 113 which prevents the mounting component from being detached is narrow, the area for pressing the mounting component is narrowed when the tape reel 106 is transported, thereby preventing the mounting component from being separated. Decreases.

Fourth, because the bending piece 94 is bent and molded, the flatness of the bent piece located on the upper side of the mounting part is dropped, and thus, the transfer part of the tape reel 106 hits the mounting part or the top surface of the tape reel in the recessed groove. There was a problem that the mounting parts bounce off.

The present invention has been made to solve such a problem in the prior art, the push link to the latch to determine the position of the feeder while at the same time allowing the driving force of the motor installed in parallel with the conveying direction of the tape reel directly to the drive wheel It aims to have accurate positioning power without shaking.

Another object of the present invention is to provide a tape reel feeder device of a surface mounter which can be used in common without any distinction between the embossing type and the paper type according to the tape shape.

1 is a front view showing a tape reel feeding apparatus of a conventional surface mounter

Figure 2 is a perspective view showing a state in which the cover removed from the conventional feeding device

Figure 3 is a perspective view showing the opening and closing plate of the tape reel feeding apparatus of the conventional surface mounter

Figure 4 is a front view showing the tape reel feeding apparatus of the present invention

5 is a perspective view of FIG. 4

*** Explanation of symbols for main parts of drawing ***

10 motor 12 screw shaft

14 elastic member 16 slider

18: drive wheel 20: axis

22: latch wheel 23: protrusion

24: lever 25: latch

26, 27, 29, 35: hinge pin 28: connecting link

30: push link 32: push

34: long hole 36: support bar

38: fixing means 40: projection

According to the present invention, a drive wheel for transporting a tape reel to a frame is rotatably installed, and an upper surface of the frame is rotatably provided with a cover having an opening, and an opening and closing plate is provided on the cover, thereby providing a tape of a surface mounter. In reel feeding apparatus,

A motor which is installed in the frame and rotates forward and backward repeatedly for a set time; Conversion means for changing the rotational motion according to the drive of the motor into a linear motion; A slider fixed to the converting means and reciprocating by driving of a motor; A lever rotatably installed on all of the sliders to rotate the latch wheel; A latch rotatably installed on the frame to fix the latch wheel so that the driving wheel does not rotate in a reverse direction; Link means for maintaining a latched state of the latch holding the latch wheel when restoring the slider; An elastic member installed between the slider and the motor so as to elastically move the slider forward when the slider is advanced and gradually return by elasticity at the time of restoration; It is characterized in that it is composed of a support bar that is fitted to the lower portion of the tape reel passing through the cover installed in the frame.

The link means includes a connecting link connected to a lower side of the slider; A push link rotatably connected to the other side of the connecting link; It is installed on one end of the push link is characterized in that consisting of a pressing piece for pressing the latch to prevent the reverse rotation of the latch wheel.

The support bar is a rectangular bar having a planar shape that is installed at the bottom when passing through the tape reel to be detachable.

The slider is characterized in that the linear reciprocating movement by the guide pin is fitted into the long hole formed on one side.

Hereinafter, the tape reel feeding apparatus of the surface mounter of the present invention with reference to the accompanying drawings.

A motor 10 installed in the frame 100 to repeatedly forward and reverse the set time; Conversion means for changing the rotational motion according to the drive of the motor 10 into a linear motion; A slider 16 fixed to the converting means and reciprocating by driving of the motor 10; A lever (24) rotatably installed on all of the sliders (16) to rotate the latch wheel (22); A latch (25) rotatably installed on the frame (100) to fix the latch wheel (22) so that the driving wheel (18) does not rotate in the reverse direction; Link means for maintaining a latched state of the latch 25 holding the latch wheel 22 when restoring the slider 16; An elastic member 14 installed between the slider 16 and the motor 10 so as to elastically advance the slider when the slider 16 is moved forward and to be gradually returned by elasticity when the slider 16 is restored; It consists of a support bar 36 which is fitted to the lower portion of the tape reel passing through the cover installed in the frame 100.

In this case, the link means includes a connecting link 28 connected to the lower side of the slider 16; A push link 30 rotatably connected to the other side of the connecting link 28; It is composed of a pressing piece 32 is installed at one end of the push link 30 to press the latch 25 for preventing the reverse rotation of the latch wheel 22, the support bar 36 is a tape reel It is a rectangular bar having a plane is installed at the bottom when the passage is free to detachable, the slider 16 is linearly reciprocated by a hinge pin 35 is fitted to the long hole 34 formed on one side do.

4 is a front view showing the tape reel feeding apparatus of the present invention, Figure 5 is a perspective view of FIG.

In the configuration of the present invention, the same parts as those of the conventional configuration will be omitted and the same reference numerals will be given.

A motor 10 that is repeatedly rotated forward and backward for a predetermined time is installed in the frame 100. The rotational motion of the motor 10 is switched to linear motion by the power switching means, and the slider 16 is rotated. The screw shaft 12 is fastened so as to be transmitted to the screw shaft 12, and the elastic member 14 is inserted into the screw shaft 12 to control the slider 16 reciprocating by the driving force of the motor 10.

A long hole 34 is formed at one side of the slider 16, and the hinge pin 35 is fixedly coupled to the long hole 34 to guide the left and right linearly reciprocating.

In the slider 16, a lever 24 for rotating the latch wheel 22 fixed to the drive shaft 18 and the same shaft 20 is provided on all of the sliders 16 so as to be rotatable. Between the motor and the motor 10, the lever 24 maintains the latched state with the protrusion 23 of the latch wheel 22 when the slider 16 moves forward, and the lever 24 is returned to the initial state when the slider is restored. An elastic member 14 for interposing is provided.

At this time, the resilient member 14 is elastically tensioned when the slider 16 is moved forward to maintain the latching state of the lever 24, and serves to attenuate so that the slider 16 can be slowly returned.

On the other hand, the lower portion of the frame 100, the latch 24, the hinge pin 26, which latches the projection 23 of the latch wheel 22 to prevent the drive wheel 18 from rotating in the reverse direction when the slider 16 is restored. It is rotatably installed around, and the link part is provided in the right part of the latch 25 so that the latch 25 may be released when the slider 16 returns to an initial state.

The link means includes a connecting link 28 connected to a lower side of the slider 16 by a hinge pin 27, and a push link 30 connected to a side of the connecting link 28 by a hinge pin 29. ) And a pressing piece 32 connected to the push link 30 by the hinge pin 31.

At this time, the connecting link 28 and the push link 30 is installed to rotate corresponding to each other around the hinge pin 29 as the slider 16 is linearly moved, and the pressing piece 32 moves together to latch. The latch 25 that prevents the reverse rotation of the wheel 22 is released or fixed.

On the other hand, the upper part of the frame 100 is fitted with a long rectangular support bar 36 is freely detachable in the lower portion through which the tape reel 106 passes, and is fixed to both ends by the fixing means (38).

The support bar 36 is formed to have a flat surface so as to be usable when using a paper-type tape reel, and to be separated from the frame 100 when feeding the embossed tape reel.

In contrast to the above-described configuration, the support bar 36 described above is provided with a recess into which the mounting parts are inserted into the support bar 36 so that the support bar 36 can be coupled when the embossing type is used and detachable when the paper type tape reel is used. It will be appreciated that those skilled in the art can easily change.

Referring to the operation of the present invention made as described above are as follows.

The feed hole 98 formed in the tape reel 106 is fitted into the protrusion 40 formed in the drive wheel 18, and then power is applied to the motor 10.

As described above, the powered motor 10 is driven in the forward direction to rotate the screw shaft 12, and the rotational movement of the screw shaft 12 is transmitted to the slider 16 to be advanced by the set stroke. At this time, the slider 16 is linearly moved by the hinge pin 35 fixedly inserted into the long hole 40.

When the slider 16 is moved forward, the lever 24 coupled to the slider is engaged with the latch wheel 22 to move forward. At this time, the driving wheel 18 fixed to the same shaft 20 as the latch wheel is fixed. It rotates angularly, and thus, the tape reel 106 in which the feed hole 98 is inserted into the protrusion 40 of the driving wheel 18 is advanced in a predetermined amount so that the vinyl covering the tape reel is peeled off and the mounting parts are exposed to the outside.

In the above-described operation, the lever 24 is pushed by the protrusion 23 in response to the counterclockwise rotation of the latch wheel 22 installed in the frame 100, and the lever 24 is released from the latch wheel 22. It stops to move forward and is restored to the initial state by the latch 25 to be caught between the projections 23 of the latch wheel 22 to prevent the reversal of the latch wheel 22 when the slider 16 is restored.

In this state, when the motor 10 drives in the reverse direction and rotates the screw shaft 12 in the reverse direction, the slider 16 which has been advanced is returned to its original position.

Subsequently, the lever 24 caught on the protrusion 23 of the latch wheel 22 is rotated by the slider 16 and is detached from the protrusion 23 to restore the slider 17. 14) it is gradually restored without sudden return.

At this time, since the latch 25 is sandwiched between the projections 23 of the latch wheel 22 by the link means, the driving wheel 18 is not rotated in the reverse direction and remains in a stopped state. Accordingly, the tape reel 106 is conveyed by one pitch.

On the other hand, when the tape reel 6 peeled off by the advance of the slider 17 is conveyed one pitch, the cover 110 advances together by the stroke of the slider 17 in accordance with the forward drive of the motor 10. Mounting parts contained in the tape reel 106 is prevented from being thrown out through the opening.

As described above, the present invention has the effect of simplifying the structure, minimizing the volume of the tape feeder, and significantly reducing the manufacturing cost, since the slider is interlocked according to the driving of the motor, and the electronic control method using the motor. Therefore, the intelligent feeder such as automatic pitch adjustment, remaining amount notice, and individual warning function is possible, which provides convenience to the user.

In addition, after the tape reel is moved by one pitch, the picking position is accurately maintained while the mounting parts are stably moved, thereby preventing the mounting parts from being separated.

In addition, since the linear motion of the slider is controlled by the elastic member, the load is less applied to the device, thereby extending the durability and life of the device.

Claims (4)

A drive wheel for transporting the tape reel to the frame is rotatably installed, and a tape reel feeding device of the surface mounter, which is provided by rotatably installing a cover having an opening on the upper surface of the frame and at the same time installing an opening and closing plate on the cover. To A motor which is installed in the frame and rotates forward and backward repeatedly for a set time; Conversion means for changing the rotational motion according to the drive of the motor into a linear motion; A slider fixed to the converting means and reciprocating by driving of a motor; A lever rotatably installed on all of the sliders to rotate the latch wheel; A latch rotatably installed on the frame to fix the latch wheel so that the driving wheel does not rotate in a reverse direction; Link means for maintaining a latched state of the latch holding the latch wheel when restoring the slider; An elastic member installed between the slider and the motor so as to elastically move the slider forward when the slider is advanced and gradually return by elasticity at the time of restoration; Tape reel feeding apparatus of the surface mounter comprising a support bar that is fitted to the lower portion of the tape reel passing through the cover installed in the frame. The method of claim 1, wherein the link means comprises a connecting link connected to the lower side of the slider; A push link rotatably connected to the other side of the connecting link; Tape reel feeding apparatus of the surface mounter is installed on one end of the push link is composed of a pressing piece for pressing the latch to prevent the reverse rotation of the latch wheel. 2. The tape reel feeding apparatus of claim 1, wherein the support bar is a rectangular bar having a flat surface which is installed at the lower portion of the tape reel so as to be detached freely. The tape reel feeding apparatus of claim 1, wherein the slider is linearly reciprocated by a hinge pin fitted to a long hole formed at one side.