KR20040000814A - Buffer For Electronic Elements Feeding Apparatus - Google Patents

Abstract

PURPOSE: A buffer for an electronic component supply system is provided to reduce the working time by transferring stably a pallet including electronic components. CONSTITUTION: An electronic component supply system includes an elevator, a buffer, a transfer, an automatic nozzle exchange apparatus, and a pocket portion. The buffer(200) for an electronic component supply system includes a buffer case(220), a locking device(250), a first and a second fastening devices(260,261), and a first and a second stage cylinders(230,240). A pallet is loaded on the buffer case(220). The locking device(250) is installed at a front portion of the buffer case(220). The locking device(250) is formed with the first and the second locking shafts connected to the first and the second cylinders. The first and the second fastening devices(260,261) are installed at a rear portion of the buffer case(220). The first and the second stage cylinders(230,240) are used for elevating the buffer case(220) as much as the first stage and the second stage, respectively.

Description

Buffer For Electronic Elements Feeding Apparatus}

The present invention relates to a buffer of an electronic component supply apparatus, and more particularly, to a buffer of an electronic component supply apparatus for supplying a pallet on which an electronic component is mounted and collecting empty pallets.

In recent years, miniaturization of products is progressing, as can be easily seen from a mobile phone. Due to this effect, the size of the electronic circuit board is also reduced, and miniaturization corresponding to the high-density mounting of electronic components is progressing.

On the other hand, for the high performance and high density of electronic components themselves, large-scale chips such as QFP (Quad Flat Package), CSP (Chip Scale Package), and module chips are also progressing, and opportunities for mounting such large electronic components on circuit boards are increasing.

The large-scale electronic components are accommodated in a tray in a flat arrangement so that a plurality of the electronic components can be stably supplied while handling a plurality of small volumes.

In addition, in recent years, large-scale products have progressed in multifunctionality, and it is necessary to mount various kinds of electronic components on one circuit board, or in small products, there is a tendency of miniaturization of various kinds of products. In a component mounting apparatus, it is expected to be able to supply various kinds of electronic components as needed every time.

Conventionally, a large number of trays containing electronic components of different types are provided, stored in one tray storage unit, and handled, and a tray containing the required electronic components can be taken out and supplied each time.

1 is a view schematically showing a conventional electronic component supply apparatus. As shown in FIG. 1, the tray a containing the electronic components is supported by the support plate b and stored in multiple stages in the tray accommodating part c which is lifted up and down. The tray accommodating part (c) is elevated by the elevating mechanism (e), and each supporting plate (b) or the accommodating part thereof is appropriately corresponding to the height of the component supply part (d), so that the component supply part (d) and the number of trays corresponding thereto. Whenever the support plate b is withdrawn from the storage part of the payment part c by the withdrawal mechanism p, and the withdrawal of the support plate b is carried out, the electronic parts in the tray a supported by it are parts. It is supplied to the handling mechanism f and provided for handling by it. The component handling mechanism f has a mounting head portion i that is moved by moving axes g and h in the XY two directions perpendicular to each other, and an adsorption nozzle j mounted to this mounting head portion i (Fig. In step 1, the electronic component to be supplied is picked up by the tool changing station and transported to the component mounting portion m, and mounted at the predetermined position of the circuit board n positioned thereon. By repeating such an operation, a predetermined electronic component is mounted on the circuit board n to manufacture the electronic circuit board.

When the tray a is emptied by the supply of the electronic component in the component supply part d, the component handling mechanism f moves the suction nozzle j of the mounting head part i as shown in FIG. Temporary replacement of the suction pad o is performed at the tool changing station.

Subsequently, the empty tray a on the support plate b at the component supply position is sucked up by the replaced tray suction pad o. In this state, the support plate b is accommodated in the storage portion corresponding to the tray storage portion c by the storage mechanism p. At this time, since the upper and lower passages q in the component supply part d open back to the back of the storage mechanism p by the storage of the support plate b, the empty tray lifted up by the tray suction pad o ( The tray a discharged and discharged through the upper and lower passages q opened on the waste conveyor r under the upper and lower passages q is discharged by the waste conveyer r and the waste window s. Is discarded out of the device.

However, the conventional apparatus has a structure in which the waste conveyor is stacked in two stages with the component supply part, and since the empty tray supplying the component is discarded, the component mounting operation is stopped every time the empty tray is discharged. The efficiency decreases. In addition, each time the mounting head part discharges the empty tray, and each time the discharge head is discharged and returns to the component mounting operation, it is wasteful to replace the suction nozzle with the tray suction pad and the tray suction pad with the suction nozzle. As a result, the work efficiency is also lowered.

Accordingly, an object of the present invention is to solve the conventional problems as described above, to provide a buffer of the electronic component supply device that can supply the parts while the intake / withdrawal is made more precisely and quickly while simplifying the overall structure. It is at that point.

1 is a schematic view showing the configuration of a conventional component supply apparatus,

2 is a view showing an electronic component supply apparatus equipped with a buffer of the present invention;

Figure 3 is a view showing the back of the electronic component supply apparatus,

4 shows a buffer of the present invention.

<Explanation of symbols for main parts of drawing>

100: elevator P: pallet

150: Magazine 160: Frame

200: buffer 210: base plate

220: buffer case 230: single stage cylinder

240: two-stage cylinder 250: locking device

252: first locking cylinder 253: second locking cylinder

254: first locking shaft 255: second locking shaft

260: first locking device 261: second locking device

262: locking member 264: groove

266: projection 268: cylinder

290: Transfer 300: Head

400: Automatic nozzle changer 500: Pocket part

600: discharge conveyor N: nozzle

The present invention, the frame and; A magazine installed inside the frame to accommodate a plurality of pallets; An elevator capable of transporting the pallet by seating the pallet drawn out from the magazine and then moving up and down; A buffer capable of drawing in pallets conveyed from the elevator and drawing out empty pallets housed therein; A transfer that can seat an empty pallet inside the buffer and simultaneously withdraw the pallet from the buffer and transfer it to a working position; A head portion capable of picking up an electronic component from the pallet drawn out by the transfer; An X-axis frame made of an LM guide to move the head portion in the X-axis direction; An automatic nozzle exchanger installed at a lower portion of the X-axis frame and capable of supplying a nozzle by moving in the Y-axis direction with respect to the head portion moving in the X-axis direction; A pocket part which rises and falls when the electronic component is seated by the head part; In the electronic component supply apparatus, characterized in that it comprises a discharge conveyor capable of discharging the electronic component determined by the head portion, the buffer is a buffer case on which the pallet can be mounted, and the front portion of the buffer case A locking device comprising a first and second cylinders and first and second locking shafts connected to and driven by the first and second cylinders, first and second locking devices installed at a rear portion of the buffer case, It is installed on one side lower and the first stage cylinder that can raise / lower the buffer case 1 stage and the buffer base plate is installed on one side of the upper stage and characterized by consisting of a two stage cylinder that can raise / lower the buffer case do.

The first and second locking devices of the buffer include a plurality of locking members installed to support one side of the pallet, a groove formed on one side of the locking member, and a locking member coupled to the groove and supporting the pallet. And a locking cylinder capable of driving the protrusion and a protrusion that can be selectively opened.

Hereinafter, the electronic component supply apparatus of the present invention will be described with reference to the accompanying drawings.

2 is a perspective view of the buffer of the present invention mounted on the electronic component supply apparatus. The buffer of the present invention is provided inside the electronic component supply apparatus. As shown in Figure 2, the electronic component supply apparatus of the present invention and the elevator (100); A magazine 150 installed at one side of the elevator 100; A buffer 200 installed above the magazine 150; A transfer 290 installed at one side of the buffer 200; An X-axis frame 201 formed of a linear motion (LM) guide installed above the transfer 290; A head portion 300 moving relative to the X-axis frame 201 and configured to pick and place electronic components; A pocket part 500 in which an electronic component is mounted by the head part 300; To the discharge nozzle 600 and the automatic nozzle exchanger 400 which is installed between the head portion 300 and the pocket portion 500 can discharge the defective electronic components conveyed to the pocket portion 500. It is composed.

The transfer 290 may be installed at one side of the motor 291, a base block 292 connected to and driven by the motor 291, and one side of the base block 292 to hold one side of the pallet P. And a pallet gripping device 293.

The transfer 290 may be located at the lower working position of the head unit 300 by drawing in / out the pallet P mounted in the buffer 200.

The discharge conveyor 600 may be installed at one side of the electronic component supply apparatus so as to be positioned below the X-axis frame 201, and may discharge a component determined to be defective.

Reference numeral 158 denotes a driving cylinder.

3 is a perspective view showing a rear surface of the electronic component supply apparatus of the present invention. As shown in FIG. 3, the electronic component supply device includes a buffer 200 at an inner upper portion of the frame 160 and a magazine 150 at a lower portion of the buffer 200. An elevator 100 is installed at the front of the magazine 150, and the elevator 100 may insert the pallet P into the magazine 150. A drive motor 110 capable of driving the elevator 100 is installed at an upper portion of the frame 160, and a Z belt 111 is installed at one side of the drive motor 110.

The magazine 150 is configured to be movable in the direction of the arrow along a pair of guide rails 152 provided on the base plate 162 by driving of the drive cylinder 158 (see FIG. 2).

4 is an enlarged perspective view of a buffer applied to the present invention. As shown in FIG. 4, the buffer 200 is provided with a buffer base plate 210 and a buffer case 220 at one side of the buffer base plate 210 and a lower side of one side of the buffer case 220. The first stage cylinder 230 is installed, and the second stage cylinder 240 is installed above the first stage cylinder 230. The first stage cylinder 230 may raise / lower the pallet P inserted in the buffer case 220 by one stage, and the second stage cylinder 240 may raise / lower the second stage.

The rear part of the buffer case 220 is provided with a locking device 250 that can support one side of the pallet (P), and corresponds to the locking device 250, the front of the buffer case 220 First and second locking devices 260 and 261 may be installed to support the other side of the pallet P. In addition, the first and second stoppers 270 and 280 may be installed at one side of the buffer base plate 210 to contact the upper and lower sides of the buffer case 220 to stop the buffer case 220. Is installed.

The locking device 250 is a first locking cylinder 252 and the first locking shaft 254 connected to one side of the first locking cylinder 252 is installed directly on the corner of one side of the pallet (P) The second locking shaft 255 which can be supported and connected to one side of the second locking cylinder 253 and the second locking cylinder 253 installed to face the first locking cylinder 252 is a pallet. It can support the other edge of one side of (P).

The first locking device 260 is installed at the front of the buffer case 220, a plurality of locking members 262 that can support the other side of the pallet (P) is installed on one side of the buffer case 220. The groove 264 is formed at one side of the locking member 262, and the protrusion 266 is coupled to the groove 264. The protrusion 266 is connected to one side of the locking cylinder 268 is installed.

The protrusion 266 pushes the locking member 262 while being inserted into the groove 264, and the locking member 262 is opened while rotating. The locking member 262 supporting the pallet P among the plurality of locking members 262 is selectively opened. The second locking device 261 is installed to correspond to the first locking device 260, and has the same configuration as the first locking device 260.

The first and second stoppers 270 and 280 may restrain the buffer case 220 while being in contact with upper and lower sides of the buffer case 220 moved by the first and second stage cylinders 230 and 240.

Hereinafter, the configuration and operation of the present invention in more detail as follows.

As shown in FIG. 3, the elevator 100 rises, and the magazine 150 installed inside the rear portion of the frame 160 is driven by the driving cylinder 158 (see FIG. 2) of the frame 160. When moved to the outside, the operator sequentially inserts a plurality of pallets (P) on which a plurality of electronic components are mounted in the magazine 150. In this case, the pallet P inserted by a plurality of alignment bars (not shown) installed at one side of the magazine 150 is stably supported, and the magazine 150 in which the plurality of pallets P is mounted is It is moved back to the inside of the frame 160 and positioned. The elevated elevator 100 descends and is positioned at a predetermined position to wait for the pallet P to be drawn in / out.

When the elevator 100 is positioned up / down in order to withdraw the pallet P to one side of the magazine 150, the restraint of the pallet P on which the plurality of alignment bars mounted on one side of the magazine 150 is mounted is mounted. A plurality of gripping apparatuses (not shown) installed on one side of the elevator 100 move forward to hold one side of the pallet P mounted in the magazine 150, and then move backward. It will be seated on top of the elevator (100).

When the elevator 100 rises together with the pallet P and is located at one side of the buffer 200, the rear part of the buffer 200 is opened. When the elevator 100 introduces the pallet P into the buffer 200, the rear part is blocked.

The buffer 200 is located on one side of the transfer 290 by raising and lowering by the cylinder, in this case, the buffer 200 is opened in front of the pallet (P) on which the electronic component is mounted to the transfer (290) It can be supplied, the front portion is closed when the empty pallet (P) is recovered from the transfer (290).

As shown in FIG. 2, the pallet P inside the buffer 200 is gripped by the transfer 290, and is withdrawn to be positioned at a lower working position of the head part 300, and the head part 300. ) Is lowered to hold the electronic component and then rises.

The head part 300 moves along the X-axis frame 210 to seat the electronic component in the pocket part 500, and the electronic part seated in the pocket part 500 is a mounter installed at one side of the electronic component supply device. And picked up by (not shown). The electronic component conveyed by the mounter and defectively conveyed is discharged by the discharge conveyor 600.

As shown in FIG. 2, the head part 300 seats various kinds of parts in the pocket part 500, and an automatic nozzle exchanger located at an intermediate portion of the head part 300 and the pocket part 500 ( At 400, the respective nozzles having different functions are exchanged and mounted.

The head unit 300 is moved in the X direction by the X-axis frame 210 to replace the nozzle (N) of a different type and located in the upper portion of the automatic nozzle exchanger 400 installed at the lower portion of the automatic nozzle. When the exchange device 400 moves in the Y direction and is positioned correctly, the head part 300 may exchange the nozzle N accurately.

On the other hand, the buffer 200 is a locking device 250 is opened to draw the pallet (P) mounted on the electronic component conveyed by the elevator 100, the locking is completed when the insertion of the pallet (P) is completed Device 250 is closed.

The locking device 250 is provided with a first locking shaft 254 operated by the first locking cylinder 252 on one side of the rear portion of the buffer case 220, and corresponding to the rear portion of the buffer case 220 The second locking shaft 255 operated by the second locking cylinder 253 is installed on the other side, and the pallet P may be opened / closed when the pallet P is drawn / drawn.

In addition, the buffer 200 is the first and second locking devices (260, 261) is opened to supply / recover the pallet (P) on which the electronic component is mounted on the transfer 290, the supply / supply of the pallet (P) When the recovery is completed, the first and second locking devices 260 and 261 are closed.

The first and second locking devices 260 and 261 are installed at both sides of the front portion of the buffer case 220. The pallet P on which the electronic component transferred from the elevator 100 is mounted in the buffer case 220 is supplied to the transfer 290, and the empty pallet P can be recovered from the transfer 290. The first and second locking devices 260 and 261 may be opened / closed.

The first and second locking devices 260 and 261 are driven by the cylinder 268 installed at one side of the buffer case 220 to advance the protrusions 266, and the protrusions 266 are inserted into the grooves 264. The groove 264 is pushed. At this time, the locking member 262 in which the groove 264 is formed is opened while rotating by a hinge, and the second locking device 261 installed on the other side of the buffer case 220 is simultaneously driven with the first locking device 260. And the pallet P accommodated in the buffer case 220 may be supplied by driving the transfer 290, and the transfer 290 recovers the empty pallet P and the buffer case 220. ) Can be stored inside.

When the empty pallet (P) is recovered and stored in the buffer case 220, when the cylinder 268 of the first locking device 260 is driven back to drive the projection 266 backward, The protrusion 266 is reversed while being separated from the groove 264, and the locking member 262 is rotated and closed by a spring installed at the hinge. When the first locking device 260 is reversely driven, the second locking device 261 provided on the other side is simultaneously driven to correspond to this, thereby stably supporting the stored pallet P.

One side of the buffer case 220 is coupled to the first stage cylinder 230 and the second stage 240, the first stage can be raised / lowered by the buffer case 220, the first stage cylinder 230, two stages The cylinder 240 may be moved up and down by two stages, so that the pallet P on which the electronic component is mounted is drawn out of the buffer case 220, and the empty pallet P is inside the buffer case 220. Can be imported.

Since the first and second stage cylinders 230 and 240 may raise and lower the buffer case 220 in the first and second stages, the first and second locking devices 260 and 261 selectively lock / lock the locking member 262. Since it can be released, the pallet P can be selectively introduced / extracted, and the buffer case 220 is moved up / down by the first and second stoppers 270 and 280 installed on both sides of the base frame 210. Both sides can be contacted to stop.

As described above, the buffer 200 is stably supplied / recovered by the locking device 250, the first and second locking devices 260 and 261, and the first and second cylinders 230 and 240. Can be.

The buffer of the electronic component supply apparatus of the present invention can stably supply the pallet on which the electronic component is mounted and at the same time recover the empty pallet stably, resulting in a shortening of the working time.

Claims (3)

An elevator capable of transferring pallets; A buffer capable of pallet in / out by the elevator; A transfer capable of transferring from the buffer to a pallet working position; An automatic nozzle changer capable of exchanging various types of nozzles in the head portion; In the electronic component supply device consisting of a pocket portion that rises / descends when the electronic component is seated by the head portion, The buffer is A buffer case on which pallets can be mounted, A locking device installed at a front portion of the buffer case and configured with first and second cylinders and first and second locking shafts connected to and driven therein; First and second locking devices installed at a rear portion of the buffer case; It is installed on one side lower portion of the buffer base plate and a one-stage cylinder that can raise / lower the buffer case by one stage and a two-stage cylinder that is installed on one side upper portion of the buffer base plate and that can raise / lower the buffer case by two stages. An electronic component supply buffer, characterized in that configured. The method of claim 1, The first and second locking devices of the buffer may include a plurality of locking members installed to support one side of the pallet, a groove formed on one side of the locking member, and a locking member coupled to the groove and supporting the pallet. A buffer for an electronic component supply device, comprising: a protrusion that can be selectively opened; and a locking cylinder that can drive the protrusion. The method according to claim 1 or 2, The first and second locking devices of the buffer can selectively open the locking member holding the pallet, and located at the other end of the buffer where transfer is necessary regardless of the pallet from which the elevator is pulled out by the transfer operation. An electronic component supply buffer, characterized in that the individual operation is possible to transfer the pellets to the magazine.