JP2003023291A - Tape feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tape feeder capable of recovering a cover tape after releasing without attaching or detaching the feeder. SOLUTION: The tape feeder supplies a tape holding an electronic component. The tape feeder comprises a pulley driving mechanism 21 for intermittently rotatably driving a pulley feeding mechanism 14 for sending a cover tape 8a coating the component and adhere to an upper surface of the tape 8 and released from the tape 8 before a pickup position in an opposite direction to a tape feeding direction, by a drive pulley 22 in which a sending belt 24 is engaged, a driven pulley 23, and a drive source of a tape feeding mechanism 20, retainer rollers 25, 26 for pressing the tape 8a, and a guide member 29 for guiding the tape 8a sent by the belt 24. Thus, the tape 8a after releasing can be recovered without attaching or detaching the feeder.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape feeder for feeding an electronic component held on a tape at a pitch and supplying the electronic component to a pickup position of an electronic component mounting apparatus. 2. Description of the Related Art In an electronic component mounting apparatus, a method using a tape feeder is known as a method for supplying an electronic component to a pickup position by a transfer head. In this method, a tape holding an electronic component is pulled out from a supply reel, and is pitch-fed in synchronization with the mounting timing of the electronic component. A cover tape is attached to the upper surface of the tape to protect the electronic components and prevent the electronic components from falling off. The cover tape is peeled off from the upper surface of the main tape serving as a base before being sent to the pickup position. The peeled cover tape has conventionally been wound and collected on a dedicated collection reel provided on the main body of the tape feeder. However, in the above-mentioned conventional tape feeder, it is necessary to replace the collecting reel when the cover tape is wound up to the full winding capacity of the collecting reel. Since this collection reel replacement operation is performed with the tape feeder removed, the tape feeder must be attached and detached with the stoppage of the device every time the cover tape is full, causing unnecessary standby time and replacement. There was a problem that it took time to work. Accordingly, an object of the present invention is to provide a tape feeder capable of collecting a peeled cover tape without attaching / detaching the tape feeder. According to a first aspect of the present invention, a tape feeder feeds an electronic component to a pickup position by a transfer head of an electronic component mounting apparatus by feeding a tape holding the electronic component at a pitch. A tape feeder that feeds the tape at a pitch, and a tape feeder that feeds a cover tape attached to an upper surface of the tape so as to cover an electronic component and separated from the tape before the pickup position. A cover tape feed mechanism that feeds in a direction opposite to the direction, the cover tape feed mechanism intermittently rotates the drive pulley and the driven pulley on which the feed belt is tuned by the drive source of the tape feed mechanism. A pulley driving mechanism for driving, and the cover table with respect to the driving pulley and the driven pulley. And a guide means for guiding the cover tape fed in the opposite direction by the feed belt. According to the present invention, by providing a cover tape feeding mechanism for feeding a peeled cover tape in a direction opposite to a tape feeding direction by a feed belt, the cover tape can be collected without being wound up, and the tape feeder can be collected. The cover tape after peeling can be collected without attaching and detaching the cover tape. Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of an electronic component mounting apparatus to which a tape feeder according to one embodiment of the present invention is mounted, FIG. 2 is a side view of the tape feeder according to one embodiment of the present invention,
FIG. 3 is a side view of a main body of the tape feeder according to one embodiment of the present invention, and FIGS. 4 and 5 are side views of a reel holding portion of the tape feeder according to one embodiment of the present invention. First, an electronic component mounting apparatus will be described with reference to FIG. In FIG. 1, a transport path 2 is provided in the electronic component mounting apparatus 1. The transport path 2 transports the substrate 3 and positions the electronic component at a mounting position. A component supply unit 4 is arranged on the front side of the transport path 2, and a number of tape feeders 5 are arranged in the component supply unit 4. The tape feeder 5 stores the electronic components held by the tape, and supplies the electronic components by feeding the tape 8 at a pitch. A transfer head 6 is provided in the electronic component mounting apparatus 1. The transfer head 6 is moved by a head moving mechanism (not shown) and picks up an electronic component from a pickup position of the tape feeder 5. A camera 7 for recognizing electronic components is provided between the transport path 2 and the component supply unit 4. The transfer head 6 holding the electronic component moves from the component supply unit 4 onto the camera 7, where the electronic component is recognized. Thereafter, the transfer head 6 moves onto the substrate 3 and mounts the electronic component on the substrate 3. Next, the tape feeder 5 will be described with reference to FIGS. In FIG. 2, a tape feeder 5 is mounted on a horizontal feeder base 4 a provided in the component supply unit 4. The tape feeder 5 includes a reel holding unit 11 for holding a supply reel 17 containing a tape 8 holding electronic components in a wound state in a reel holder 16.
And a tape feeding unit 10 for feeding the tape 8 pulled out from the supply reel 17 at a pitch. The tape feeding section 10 is mainly composed of a main body section 12 having a horizontally elongated shape. The mounting base 12a provided on the lower surface of the main body section 12 is engaged with an engaging section provided on the feeder base 4a. Is attached to the feeder base 4a. The tape 8 pulled out from the supply reel 17 is sent in the direction of arrow a along the main body 12 and
The cover tape 8a attached to the upper surface of the tape 8 so as to cover the electronic components is peeled off just before the pickup position. The peeled cover tape 8a is folded back here, and is fed by the cover tape feed mechanism 14 in the direction opposite to the tape feed direction (the direction of arrow b). Then, the sent cover tape 8a moves in the cover case 13 and is collected in the collection container 15 arranged rearward. Next, the tape feeding section 10 will be described with reference to FIG. 3, a tape feed mechanism 20 is built in the main body 12, and the tape feed mechanism 20 feeds the tape 8 drawn from the supply reel 17 toward the pickup position by the transfer head 6 (see FIG. 2). I do. The tape feeding mechanism 20 includes a main body 12
There are various types such as a system driven by a drive source such as a motor built in each tape feeder inside, and a system driven through a transmission mechanism such as a link mechanism by a drive source provided in the electronic component mounting device. A driving method can be used. Above the main body 12, a cover tape feeding mechanism 14 is provided. Cover tape feed mechanism 14
Includes a drive pulley 22 and a driven pulley 23 in which a feed belt 24 is adjusted, pressing rollers 25 and 26, and a guide member 29. The drive pulley 22 is rotationally driven by the tape feed mechanism 20 via the pulley drive mechanism 21. The pitch feed operation by the tape feed mechanism 20 is as follows.
The driving pulley 22 converts the driving pulley 22 into an intermittent rotation operation. That is, the pulley drive mechanism 21
The drive pulley 22 is intermittently rotated by the drive source of the tape feed mechanism 20. The pressing rollers 25 and 26 are urged against the driving pulley 22 and the driven pulley 23 by springs 27 and 28, respectively. As shown in the enlarged view of FIG. Press roller 25
As a result, it is pressed against the feed belt 24 adjusted on the outer periphery of the drive pulley 22. In this state, when the drive pulley 22 rotates in the direction of arrow c, the feed belt 2 is rotated.
The tape feeding force in the direction opposite to the tape feeding direction (the direction of arrow d) is transmitted to the cover tape 8a sandwiched between the cover tape 4 and the pressing roller 25 by the frictional force with the feed belt 24. The tape feed force is applied to the feed belt 2 along the path in which the cover tape 8a moves in the direction of the arrow d while being guided by the guide member 29 as guide means.
4 through the contact surface. Therefore, since the frictional force is transmitted through a wider contact range as compared with a method in which the feed force is transmitted simply by being sandwiched between the feed rollers, problems such as breakage of the cover tape 8a do not occur. Instead of using the fixed guide member 29 as the guide means, a feed belt driven similarly to the feed belt 24 is separately provided below the cover tape 8a, and the cover tape 8a is sandwiched between the two feed belts. You may send it while guiding. The cover tape 8a fed by the feed belt 24 is driven by the driven pulley 23 and the pressing roller 26.
And is sent out backward and sent into the collection container 15. An entrainment preventing member 30 is provided downstream of the pressing roller 26, and the cover tape 8 a is sandwiched and sent out by the driven pulley 23 and the pressing roller 26.
Is prevented from jamming and hanging around the pressing roller 26. At the entrance of the collection container 15, a tape introduction part 31 for preventing jamming due to the entanglement of the cover tape 8a is provided. The cover tape 8a sent into the collection container 15 via the tape introduction part 31
Is properly taken out and discarded by opening the rear collection door. The take-out of the cover tape 8a can be carried out even when the apparatus is in operation. As in the case of a cover tape collecting mechanism using a conventional collecting reel, a tape with the stoppage of the apparatus is required to replace the collecting reel every time the collecting reel becomes full. There is no need to perform the work of attaching and detaching the feeder, and wasteful equipment downtime can be eliminated to improve productivity. Next, the reel holding section 11 will be described with reference to FIG. As shown in FIG. 4A, the reel holder 16 of the reel holding unit 11 includes two vertical side plates 32.
The supply reel 17 is accommodated in a gap between the side plates 32A and 32B. The reel holder 16 has a shape inclined in the direction opposite to the tape feeding direction (the direction of arrow e), and two reels 16 are provided below the reel holder 16 so that two supply reels 17 can be accommodated along the inclined direction. Reel sheets 33A and 33B are provided. Of the two reel sheets, the supply reel 17 in use with the tape 8 supplied to the tape feeder 10 pulled out is placed on the upper reel sheet 33A, and the lower reel sheet 33A is placed on the lower reel sheet 33A. A spare supply reel 17 is placed on the sheet 33B. By holding the spare supply reel 17 on the reel holder 16 in advance in this way, it is possible to immediately replace the spare supply reel 17 when parts run out, thereby shortening the time required for reel replacement work. be able to. Here, an example is shown in which only one spare supply reel 17 is prepared, but a plurality of spare supply reels may be provided. When the supply reel 17 is placed on the reel sheets 33A and 33B, as shown in FIG. 4B, the supply reel 17 is supplied to three support rollers 34 provided on the reel sheets 33A and 33B. It is placed with the outer periphery 17b in contact therewith. The support roller 34 is rotatable about a shaft 34a, so that the supply reel 17 is rotatably held. Therefore, rotation of the supply reel 17 when the tape 8 is pulled out from the supply reel 17 in use is allowed. The support roller 34 is provided on the outer periphery 1 of the supply reel 17.
7b at a plurality of positions to supply the reel 1
7 is rotatable holding means for rotatably holding 7. The gap between the side plates 32A and 32B at the upper part of the reel holder 16 (in the direction opposite to the tape feeding direction) is a reel mounting / removing opening through which the supply reel 17 can be freely taken in and out. When the supply reel 17 is placed on the reel sheets 33A and 33B, there is no need to insert a shaft member such as a mounting pin into an opening 17a provided at the center of the supply reel 17, so that the supply reel 17 Supply reel 1 when attaching / detaching
7 can be freely moved within the gap between the side plates 32A and 32B. Therefore, even when the supply reel 17 is replaced while the tape feeder 5 is mounted on the component supply unit 4, the supply reel 17 is moved from the direction opposite to the tape feeding direction on the front side of the component supply unit 4. It is possible to put it in and out freely. When the supply reel 17 is placed on the reel sheet 33A, the side surface of the supply reel 17 is supported by the side plates 32A and 32B, whereby the tape feeding direction is correctly aligned. Side plates 32A, 3
2B is a side support means for adjusting the direction of the supply reel 17 by contacting the side surface of the supply reel 17. In addition, as the side surface supporting means, a frame structure in which a rod member or a tube member is combined, or a structure in which the frame structure and the flat plate member are combined may be used in addition to the flat members such as the side plates 32A and 32B. In the above embodiment, the reel sheet 3
Although the example in which the rotary support rollers 34 of 3A and 33B are used has been described, a reel sheet 35 as shown in FIG. 5 may be used as the reel sheet. In FIG. 5, the reel holder 16 of the reel holding unit 11 'includes two reel sheets 35 on which the supply reel 17 is placed, similarly to the reel sheets 33A and 33B shown in FIG. The reel sheet 35 is provided with a reel support surface 35a that circumscribes the outer periphery 17b of the supply reel 17 at a plurality of positions and has a contact surface with good slidability. Also in this case, when the tape 8 is pulled out from the supply reel 17, the outer periphery 17b slides on the contact surface with the reel support surface 35a, so that the rotation of the supply reel 17 is allowed. In this example, the reel support surface 35a is
By supporting the outer periphery 17b of the cartridge 7 at a plurality of positions, the supply reel 17 is rotatable and held. With the reel holding section 11 having the above configuration, a large number of tape feeders 5 are densely arranged in the component supply section 4 and a tape feeder exists adjacent to a tape feeder to be replaced with a supply reel. Even if there is, the supply reel can be attached and detached from a rearward direction where there is no interference with the adjacent tape feeder, and the supply reel can be easily replaced without removing the tape feeder. According to the present invention, by providing a cover tape feeding mechanism for feeding a cover tape after peeling by a feed belt in a direction opposite to the tape feeding direction, the cover tape can be collected without being wound up. The cover tape after peeling can be collected without attaching and detaching the tape feeder.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of an electronic component mounting apparatus to which a tape feeder according to one embodiment of the present invention is mounted. FIG. 2 is a side view of the tape feeder according to one embodiment of the present invention. FIG. 3 is a side view of a main body of the tape feeder according to one embodiment of the present invention; FIG. 4 is a side view of a reel holding unit of the tape feeder according to one embodiment of the present invention; Side view of reel holding part of tape feeder of form [Description of reference numerals] 1 electronic component mounting device 4 component supply part 5 tape feeder 6 transfer head 8 tape 8a cover tape 10 tape feeding part 11 reel holding part 12 main body part 14 cover Tape feed mechanism 16 reel holder 17 supply reel 20 tape feed mechanism 21 pulley drive mechanism 22 drive pulley 23 driven pulley 25, 26 press roller 29 guide members 33A, 33B, 5 reel seat 34 supporting roller

Claims (1)

Claims 1. A tape feeder for feeding an electronic component to a pickup position by a transfer head of an electronic component mounting apparatus by feeding a tape holding an electronic component at a pitch, wherein the tape has a pitch A tape feed mechanism for feeding,
A cover tape feeding mechanism for feeding a cover tape adhered to the upper surface of the tape so as to cover the electronic component and peeled off from the tape just before the pickup position in a direction opposite to the tape feeding direction by a feed belt; The feed mechanism includes a drive pulley and a driven pulley in which the feed belt is adjusted, a pulley drive mechanism that drives the drive pulley intermittently by a drive source of the tape feed mechanism, and a drive pulley and a driven pulley. A tape feeder comprising: a pressing roller for pressing a cover tape; and guide means for guiding the cover tape fed in the opposite direction by the feed belt.