KR20120033221A - Carrier tape feeder - Google Patents

Abstract

PURPOSE: A carrier tape feeder is provided to simultaneously pick up a plurality of components by preventing another component from being separated from a receiving space. CONSTITUTION: A component pickup unit(200) is comprised of a tape shutter(202), a tape guider(201), and a connection member(205). The tape guider guides a transfer of the carrier tape to a component pickup position. The connection member combines a tape guider with a tape shutter. A cover vinyl separating unit(203) is formed on one side of the tape shutter and folds the separated cover vinyl to discharge the cover vinyl.

Description

Carrier tape feeder

The present invention relates to a carrier tape supply apparatus, and more particularly, to a carrier tape supply apparatus capable of continuously supplying a carrier tape containing a component to a component mounter.

The chip mounter is vacuum picked and picked up by the nozzle of the head to pick and place the small parts supplied by the part feeder, and then the parts to be mounted. Is a device that is mounted at a high speed and high accuracy on a predetermined printed circuit board.

Recently, with the development of electronic technology, electronic products are becoming higher and smaller in size, and accordingly, the mounting of components in electronic products is made of high density. As such, in order to mount components in electronic products at high density, high precision component mounting is required. Accordingly, technology for mounting components on printed circuit boards has been developed.

The technology for mounting a component on a printed circuit board is a surface mount technology (SMT) method that mounts a small, high-density component directly on the surface of a printed circuit board, away from the conventional through-hole method. The component mounting technology can be classified into tape roll type, tray type and stick type according to the type of supplying the parts to the surface mounter. According to the shape accommodated, it is divided into a tape feeder, a tray feeder, a stick feeder, and the like. Among these, the tape feeder is the most widely used because it has the advantage of supplying parts at high speed and in large quantities.

Carrier tape is taped by cover vinyl after small electronic parts such as semiconductor chips are accommodated in a component storage space formed at a predetermined interval on the base tape, and taped on one side at predetermined intervals in the longitudinal direction of the tape. A tape feed hole is formed and is generally commercialized in a state of being wound on a reel. The carrier tape is removed by the carrier tape feeder mounted on the component mounter to separate the cover vinyl by the pitch transferred from the base tape while moving the transfer hole by a predetermined pitch, and removing the cover vinyl in the exposed part storage space. The electronic components are picked up by the adsorption nozzle of the mounter.

The conventional tape feeder was configured to pick up one component at a time from the suction nozzle of the component mounter. That is, the cover vinyl is removed from the conveyed carrier tape so that one part is exposed, and the adsorption nozzle is picked up with the exposed part, and the adsorption nozzle is picked up after the part is mounted. lost. However, such a conventional method has a problem of lack of productivity in the component mounting speed, so there is a great need to develop a new technology that can improve the component mounting speed.

Accordingly, an object of the present invention is to provide a carrier tape supply apparatus in which a plurality of adsorption nozzles simultaneously pick up a plurality of parts to improve productivity, and the cover vinyl separated from the carrier tape can be discharged in a stable folded state. It is.

In order to achieve the above object, the present invention provides a component pickup portion comprising a carrier tape supply portion, a tape guider for guiding the transfer of the carrier tape to a position where the component is to be picked up, and a tape shutter for separating the cover vinyl and exposing the component to be picked up; And a cover vinyl discharge part configured to fold and discharge the separated cover vinyl, and the tape shutter is configured to expose a plurality of parts.

According to an embodiment of the present disclosure, a component exposure separator may be formed in the tape shutter to cover an upper portion of at least one of the plurality of component receiving spaces.

According to another embodiment of the present invention, the cover vinyl outlet may include a compression roller for pressing the folded cover vinyl.

According to another embodiment of the present invention, the cover vinyl outlet may include a pull roller that causes wrinkles in the cover vinyl.

According to another embodiment of the present invention, the component pick-up unit carrier tape supply apparatus characterized in that it comprises a sprocket detection and position adjustment for detecting and adjusting the stop position of the sprocket.

The carrier tape supply device of the present invention has the following effects.

1. Since the tape shutter of the component pickup part is configured so that a plurality of components can be exposed, a plurality of suction nozzles can pick up a plurality of components at the same time.

2. The part exposure separation part of the tape shutter can prevent other parts from being released from the storage space while some parts are picked up, so that even when the parts are stored at a narrow interval, the parts can be picked up reliably at the same time. .

3. Since the cover vinyl is discharged with the folded state stable, there is no risk of folds after release and tangled with surrounding cover vinyl or equipment.

1 shows the structure of a typical carrier tape.
Figure 2 shows a carrier tape supply apparatus according to an embodiment of the present invention.
3 illustrates a component pickup unit according to an embodiment of the present invention.
4 illustrates a form in which a plurality of components are exposed in the component pickup unit according to the exemplary embodiment of the present invention.
5 illustrates a component pickup unit according to another embodiment of the present invention.
6 illustrates a process of picking up a plurality of components in a component pickup unit according to another exemplary embodiment of the present invention.
Figure 7 schematically shows a cover vinyl outlet according to an embodiment of the present invention.
Figure 8 shows the sprocket detection and position adjustment unit installed in the component pickup of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

The carrier tape supply apparatus of the present invention comprises a carrier tape supply portion, a component pickup portion comprising a tape guider for guiding the transfer of the carrier tape to a position where the component is to be picked up, and a tape shutter for separating the cover vinyl and exposing the component to be picked up; And a cover vinyl discharge part configured to fold and discharge the covered cover vinyl, wherein the tape shutter is configured to expose a plurality of parts.

Figure 1 shows a carrier tape that is generally used, (a) shows a part of the cover tape is separated, (b) shows the A-A 'cut surface of (a). Referring to FIG. 1, the carrier tape 100 consists of a base tape 101 and a cover vinyl 102 bonded thereon. The base tape 101 is made of paper or the like, and the transfer hole 103 is formed at a predetermined interval on one side, and a semiconductor chip (not shown) is accommodated in the component storage space 104 formed at a predetermined depth. The cover vinyl 102 is made of a transparent polymer film and bonded to the base tape 101 by an adhesive layer 105 composed of a first adhesive layer 105a and a second adhesive layer 105b. The size of the component storage space 104 is determined in consideration of the size of the component to be stored, and the spacing between the storage spaces 104 may be determined at appropriate intervals so that a stable pickup can be made.

Figure 2 shows a carrier tape supply apparatus according to an embodiment of the present invention. Referring to FIG. 2, the carrier tape supply device 400 includes a carrier tape supply part 10, a component pickup part 200, and a cover vinyl discharge part 300. The carrier tape supply unit 10 is a portion for continuously supplying the carrier tape, and may include a driving unit for loading the carrier tape, and transferring the carrier tape in the direction of the component pickup unit. The component pick-up unit 200 is a portion for removing the cover vinyl from the conveyed carrier tape so that the component can be picked up, and may include a separating means of the cover vinyl, an exposing means of the component, and the like. The cover vinyl discharge part 300 functions to fold the cover vinyl separated from the carrier tape and discharge it to one side. The carrier tape supply unit, the part pickup unit, and the cover vinyl discharge unit illustrated in the drawings are for explaining the overall configuration of the carrier tape supply apparatus of the present invention, and the specific configuration may be variously modified based on the claims.

Figure 3 shows a part pick-up unit according to an embodiment of the present invention, (a) is a state showing each component assembled, (b) is an exploded view to show the assembled state of the parts . Referring to FIG. 3, the component pickup unit 200 includes a tape guider 201, a tape shutter 202, and a connecting member 205. The tape guider 201 guides the carrier tape conveyed from the carrier tape supply to be transported to a position where the parts will be picked up along a predetermined path. The tape guider 201 is fixed to the body of the carrier tape supply device by fastening means such as a bolt, and the upper portion thereof is opened by a predetermined length. The tape shutter 202 is fastened to an upper portion of the tape guider 201, and a cover vinyl separator 203 is formed at one end thereof so that the separated cover vinyl can be discharged to one side. Discharge of the cover vinyl is pulled by the cover vinyl discharge portion of the cover vinyl at a constant speed is bent in the cover vinyl separation unit 203 is continuously discharged to one side of the body. The tape shutter 202 is opened at an upper portion by a predetermined length while covering a portion of the upper opened portion of the tape guider 201. The open portion of the tape shutter 202 allows the cover vinyl to be separated so that the parts housed in the part storage space are exposed in the adsorption nozzle direction, which is referred to as the part exposed part 204. The number of parts to be exposed is determined by the length of the part exposing part 204, the size of the part accommodating space, and the forming interval. The connecting member 205 is a means for coupling the tape guider 201 and the tape shutter 202. The tape guider 201 and the tape shutter 202 may be coupled by other coupling means, or are connected in one component. It may be manufactured in a state.

4 illustrates a form in which a plurality of components are exposed in the component pickup unit according to the exemplary embodiment of the present invention. Referring to FIG. 4, when the carrier tape is supplied to the component pickup unit, the carrier tape moves in the longitudinal direction while maintaining a constant position in the width direction in the inner space of the tape guider 201. As the transfer of the carrier tape proceeds, the cover vinyl 102 is continuously separated and discharged to one side of the body, and the cover vinyl is separated and the parts stored in the part storage space are transferred to the part exposed portion 204 of the tape shutter 202. Exposed. When five parts are exposed to the part exposing portion 204, the transfer of the carrier tape is temporarily stopped and the pick up of the parts proceeds. A feature of the present invention is that a plurality of parts can be exposed to the part exposing portion 204 of the tape shutter 202. In the conventional carry tape supply apparatus, since the pick-up of parts is performed using one suction nozzle, only one part is exposed to the part exposed part. However, in the present invention, a plurality of suction nozzles are connected at a predetermined interval. Since the parts are simultaneously picked up in the state, the parts exposing portion 204 of the tape shutter 202 is configured to expose a plurality of parts to be picked up. In addition, in order for the carrier tape supply device of the present invention to pick up a plurality of parts at the same time, the feeding and stopping of the carrier tape must be performed in a special way. Since the conventional carrier tape supply device must pick up the parts stored in one storage space and then pick up the parts stored in the next storage space, the carrier tape is transferred and stopped in one storage space unit. However, since the carrier tape supply apparatus of the present invention picks up the parts stored in several storage spaces at the same time, the transfer and stop of the carrier tape is also made of a plurality of storage space units. For example, in the case of picking up parts at the same time in three storage spaces, after the pickup is completed, the carrier tape is transported by the distance that the three storage spaces are to be transported, and then the parts are picked up after stopping, and then the carriers are transported again by three storage spaces. After transferring and stopping the tape, the parts are picked up again.

As shown in FIG. 3B, in the present invention, the tape guider and the tape shutter are coupled by a connecting member. This is to replace the tape shutter formed with the part exposed parts having various lengths and widths with the tape guider, so as to be able to cope with various models of the carrier tape.

5 illustrates a component pickup unit according to another embodiment of the present invention. Referring to FIG. 5, it can be seen that other parts are the same as the part pick-up part of FIG. 3, but the configuration of the part exposed part is different. The part exposed part is exposed by the part exposed separator 206 to the first part exposed part 204a, the second part exposed part 204b, the third part exposed part 204c, the fourth part exposed part 204d, and the fifth part. The parts are exposed to the exposed portion 204e. The number and the formation positions of the component exposure separator 206 may be variously modified in consideration of the size of the component and the storage interval. The separation of the parts exposed part in this way takes into account the diameter of the adsorption nozzle and the distance between the parts, and the reason thereof will be described with reference to FIG. 6.

6 is a cross-sectional view taken along line A-A 'of FIG. Referring to FIG. 6A, the carrier tape is transferred from the cover vinyl separator 203 to the part exposed part with the cover vinyl 102 separated, and the suction nozzle 209 picks up the part 106. I wait for it. In this case, five parts are exposed at the part exposure part, and four parts are covered by the part exposure separation part 206 so that the upper portion of the storage space is covered. When the suction nozzle 209 moves downward to pick up the exposed parts, the carrier tape moves by one pitch to expose the parts covered by the part exposure separation unit 206 as shown in FIG. Subsequently, when the pickup of the exposed parts is completed, the movement of the carrier tape is started again, so that the parts are arranged in the form as shown in FIG.

The reason why the components are picked up one by one is because of the size of the suction nozzle 209. The suction nozzle 209 is formed in the lower part of the intake hole and the inside of the intake passage is formed in the tube, in consideration of the structural stability is generally manufactured to a diameter of a predetermined size or more. However, when the spacing between the parts to be picked up is narrow, the spacing between the parts may be smaller than the spacing between the plurality of suction nozzles connected to each other, so that the parts must be picked up one by one. In the process of picking up the part by the suction nozzle 209, the end of the suction nozzle comes into contact with the part, and thus movement in the vertical direction occurs in the entire carrier tape. In this case, when the vertical movement of the carrier tape occurs, other parts that are not picked up may be flipped or moved out of the storage space. No churn occurs. Although the drawing shows that the five suction nozzles pick up the parts at the same time, the parts exposed part can be configured to allow various numbers of parts to be picked up at the same time in consideration of the size of the parts or the size of the suction nozzles. Rather than picking up parts, part exposure separators may be formed to pick up parts across two or more than three.

In the present invention, the separated cover vinyl is folded in half and discharged to the side of the body. The reasons why the cover vinyl is folded and discharged are as follows. The bonding between the cover vinyl and the base tape is by means of an adhesive layer, whereby adhesive may remain on the cover vinyl even after the cover vinyl is separated. If the adhesive layer of cover vinyl is exposed, work can be interrupted by tangling with other cover vinyl or by sticking to the equipment. When the cover vinyl is folded in half and discharged, the first adhesive layer and the second adhesive layer of the cover vinyl are stuck to each other so that the cover vinyl can be discharged without exposing the adhesive. However, since the cover vinyl itself has a certain thickness and a certain amount of elasticity, in some cases, the folded surface of the cover vinyl is unfolded, thereby exposing the adhesive. In the present invention, in order to secure the folding of the cover vinyl, a compression roller is installed in the cover vinyl discharge part.

Figure 7 schematically shows a cover vinyl outlet according to an embodiment of the present invention. Referring to FIG. 7, the cover vinyl 102 is pulled down by the pulling rollers 301a and 301b through the first compression roller 302, the second compression roller 303, and the third compression roller 304. come. The pulling rollers 301a and 301b consist of gears or pulleys with meshing teeth, and the teeth act to allow the cover vinyl 102 to be pulled without slipping, and at the same time, wrinkles are generated in the cover vinyl 102 that is discharged. Function. The discharged cover vinyl flows into the tape cutter (not shown) and is cut to a certain length. When wrinkles occur in the lengthwise direction of the cover vinyl, it is difficult to bend in the width direction. Cutting efficiency to cut by is improved. The compression rollers help the cover vinyl to be discharged in a stable folded state. While the cover vinyl passes through the pressing roller, the conveying angle of the cover vinyl is changed, and thus a force is applied in the direction in which the folded cover vinyl is pushed. As the number of times the cover vinyl passes through the pressing roller increases, the degree of folding of the cover vinyl increases. It will change stably. When this is rearranged using the drawing, in section A, the cover vinyl starts to fold and is completely folded in half before entering section B. Subsequently, in the sections B, C, and D, the folding degree of the cover vinyl becomes more and more firm, and is discharged to the outside by the pulling roller.

The sprocket for transporting the carrier tape is installed in the component pick-up unit, and the rotation of the sprocket is stopped to periodically stop the transfer of the carrier tape while the parts stored in the carrier tape are picked up. Sensors that detect rotation are installed. In the manufacturing process of the carrier tape feeder, minute tolerances may occur for each product, such as the installation position of the sprocket, and thus, the stop position of the carrier tape may occur. There is a need for a means of correction.

In the present invention, by adjusting the position of the sensor for detecting the rotation of the sprocket can be adjusted the stop position of the carrier tape. Figure 8 shows the sprocket detection and position adjustment unit installed in the component pickup of the present invention. Referring to FIG. 8, the sprocket detecting and positioning unit 500 includes a sprocket sensor 502, a sprocket sensor board 503, a sprocket sensor holder 504, and a sprocket sensor position adjusting cam 505. The sprocket sensor 501 may be various kinds of sensors, for example, an optical sensor may be used. The optical sensor is composed of a transmitter for transmitting light and a receiver for receiving light, and since the reception of light is stopped at the optical receiver while the sprocket teeth pass between the transmitter and the receiver, the rotation of the sprocket is sensed. The sprocket sensor 501 is coupled to and fixed to the sprocket sensor board 503, and the sprocket sensor board 503 is coupled to the sprocket sensor holder 504 by a connection portion. At this time, when the sprocket sensor position adjustment cam 505 is rotated, the sprocket sensor holder 504 is moved in the left and right directions so that the horizontal position of the sprocket sensor 502 is adjusted. More specifically, the sprocket sensor position adjustment cam 505 is fixed to the rotating shaft in an eccentric state, so that when the sprocket sensor position adjustment cam 505 rotates, the side of the sprocket sensor position adjustment cam 505 has a sprocket sensor holder ( The entire sprocket sensor holder 504 can be moved in the horizontal direction while pushing the contact surfaces 504a and 504b of the 504. In the above, the method of adjusting the stop position of the carrier tape has been described using an optical sensor. However, various methods may be used. For example, the stop position of the carrier tape may be adjusted using an encoder.

The above description has been made using the embodiments of the technical idea of the present invention, and those skilled in the art to which the present invention pertains various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments described in the present invention are not intended to limit the technical spirit of the present invention but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. It should be apparent that the protection scope of the present invention should be interpreted by the claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

100: carrier tape 101: base tape
102: cover vinyl 103: transfer hole
104: component compartment 105: adhesive surface
106: part 200: part pickup part
201: tape guider 202: tape shutter
203: cover vinyl separating part 204: part exposing part
204a to 204e: first part exposed part to fifth part exposed part
205: connecting member 206: component exposure separator
209: adsorption nozzle 300: cover vinyl discharge portion
301a, 301b: pull roller
302 ~ 304: 1st press roller ~ 3rd press roller
400: carrier tape feeder
500: sprocket detection and positioning unit 501: sprocket
502: sprocket sensor 503: sprocket sensor board
504: sprocket sensor holder 505: sprocket sensor position adjustment cam

Claims (5)

Carrier tape supply;
A part pick-up part comprising a tape guider for guiding the transfer of the carrier tape to a position where the part is to be picked up and a tape shutter for separating the cover vinyl and exposing the part to be picked up; And
It includes; cover vinyl discharge portion for fold out the separated cover vinyl;
And a tape shutter is configured to expose a plurality of parts in order to simultaneously pick up the parts stored in the plurality of storage spaces. The method according to claim 1,
The tape shutter, the carrier tape supply apparatus, characterized in that the component exposure separator is formed to cover the upper portion of at least one of the plurality of transported parts receiving space. The method according to claim 1,
The cover vinyl discharge part comprises a pressing roller for pressing the folded cover vinyl. The method according to claim 1,
And the cover vinyl outlet comprises a pull roller for causing wrinkles in the cover vinyl. The method according to claim 1,
Component pick-up unit carrier tape supply apparatus characterized in that it comprises a sprocket detection and positioning for detecting and adjusting the stop position of the sprocket.

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