JP2008273720A - Tape reel device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tape reel device of simple structure allowing a tape roll to be easily fit on it and capable of appropriately holding tape rolls with shaft holes of different diameters. <P>SOLUTION: The tape reel device comprises a reel shaft having a diameter smaller than that of a shaft hole Rb of a tape roll R, a reel shaft formed with an air flow path in the shaft center thereof, a bearing frame 21 turnably supporting the reel shaft on one side, a bellows shaft 33 provided freely to be extendable in the axial direction on a projecting side of the reel shaft and communicate with the air flow path and to be inflated by air so as to hold the tape roll R, and a compressed air supply means for supplying air from the bearing frame 21 side into the bellows shaft 33 through the air flow path so as to inflate the bellows shaft 33. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a tape reel device to which a tape roll in which a tape-shaped member is wound around a core is detachably mounted in an axial direction.

Conventionally, though not this type of tape reel device, a device using an air chuck mechanism is known as a workpiece support mechanism that is attached to a spindle of a machine tool and supports a workpiece. This air chuck mechanism is composed of a plurality of fan-shaped gripping claws having an arc-shaped gripping portion, and is formed by a cylindrically formed molding claw, an air supply device that pumps air, and a driving force of supplied air. And a gripping claw slide mechanism that slides each gripping claw in the radial direction of the forming claw (see Patent Document 1). The air chuck mechanism slides each gripping claw outward by the gripping claw slide mechanism with the workpiece set outside the gripping part of each gripping claw, and abuts the gripping part on the inner peripheral surface of the workpiece. Let the workpiece hold. By using such an air check mechanism, it is possible to easily attach the workpiece and to appropriately hold a workpiece having a different diameter on the inner peripheral surface.
JP 2003-170306 A

  By applying such an air chuck mechanism to the tape reel device, it is considered that the tape roll can be easily attached and detached. However, since the conventional air chuck mechanism receives a large processing load via the workpiece, there is a problem that the configuration becomes complicated and the entire cost of the tape reel device is increased.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a tape reel device having a simple structure in which a tape roll can be easily attached and a tape roll having a different shaft hole diameter can be appropriately held.

  The tape reel device of the present invention is a tape reel device in which a tape roll having a tape-shaped member wound around a core is detachably mounted in the axial direction, and is formed with a diameter smaller than the shaft hole of the tape roll, A reel shaft that forms an air flow path, a bearing that rotatably supports the reel shaft on one side, and a projecting side of the reel shaft are provided to be extendable in the axial direction, communicate with the air flow path, and expand by air. And a compressed air supply means for supplying air into the telescopic shaft from the bearing side via the air flow path and expanding the telescopic shaft. .

  According to this configuration, after setting the tape roll outside the telescopic shaft, the telescopic shaft is inflated so that the telescopic shaft comes into contact with the inner peripheral surface of the tape roll and holds the tape roll. For this reason, attachment of a tape roll is easy and the tape roll from which the diameter of a shaft hole differs can be hold | maintained appropriately. In addition, the present apparatus can have a simple configuration, and the cost for production of the present apparatus can be reduced. Furthermore, since the telescopic shaft is configured to be stretchable in the axial direction, after the tape roll is applied in a contracted state, the telescopic shaft can be extended to extend the space for mounting the tape roll and the telescopic shaft. Space can be overlapped, and space efficiency can be improved.

  In this case, the reel shaft is composed of a plurality of cylindrical shafts connected in a nested manner, and the telescopic shaft has one end fixed to the proximal cylindrical shaft and the other end fixed to the distal end of the distal cylindrical shaft. In addition, it is preferable that a communication hole communicating with the telescopic shaft is formed at least on the cylindrical shaft on the distal end side.

  According to this configuration, since the reel shaft is constituted by a plurality of cylindrical shafts connected in a nested manner, the reel shaft can be expanded and contracted in the axial direction, so that it corresponds to the axial length of the tape roll. Thus, the telescopic shaft can be extended and the telescopic shaft that is telescopic can be appropriately supported.

  The tape reel device of the present invention is a tape reel device in which a tape roll having a tape-shaped member wound around a core is detachably mounted in the axial direction, and is formed with a diameter smaller than the shaft hole of the tape roll, A reel shaft that forms an air flow path, a bearing that rotatably supports the reel shaft on one side, and an outer peripheral portion of the reel shaft that extends in the axial direction and expands and contracts in the radial direction. A plurality of bellows members that expand by the air introduced into the path and hold the tape roll, and a compression that supplies air from the bearing side to the plurality of bellows members via the air flow path and expands each bellows member in the radial direction. And an air supply means.

  According to this structure, after setting a tape roll to the outer side of each bellows member, each bellows member is contact | abutted to the internal peripheral surface of a tape roll by expanding each bellows member, and hold | maintains a tape roll. For this reason, attachment of a tape roll is easy and the tape roll from which the diameter of a shaft hole differs can be hold | maintained appropriately. In addition, the present apparatus can have a simple configuration, and the cost for production of the present apparatus can be reduced.

  In this case, the reel shaft is preferably composed of a plurality of cylindrical shafts connected in a nested manner, and the plurality of bellows members are preferably provided at least on the cylindrical shaft on the distal end side.

  According to this configuration, since the reel shaft is composed of a plurality of cylindrical shafts connected in a nested manner, the reel shaft can be expanded and contracted in the protruding direction, so that the tapes having different lengths in the width direction can be used. The roll can be appropriately held, and the installation space can be reduced when the apparatus is not used. Also, if the reel shaft is extended after the tape roll is applied with the reel shaft contracted, the tape roll mounting space and the space for extending the reel shaft can be overlapped, improving space efficiency. Can be made.

  In these cases, it is preferable that the plurality of cylindrical shafts are slidably engaged with each other in a rotationally stopped state.

  According to this configuration, the tape roll can be appropriately rotated as a retractable reel shaft.

Hereinafter, a tape reel device according to an embodiment of the present invention will be described with reference to the accompanying drawings. This tape reel device supports a tape roll for supply material in which a carrier tape (tape-like member) on which a plurality of workpieces are attached is wound around a core in a liquid crystal panel mounting process or a backlight assembly line, and a tape The carrier tape is fed out from the roll and supplied to the mounting apparatus. Note that the tape reel device is driven by a tape take-up device for taking up the supplied carrier tape and feeds the tape roll.
Here, before explaining the details of the tape reel device, a tape roll as a support object will be explained.

  The tape roll R includes a carrier tape T and a core Ra that is formed in a cylindrical shape and on which the carrier tape T is wound (see FIG. 1). There are a plurality of types of tape rolls R having different lengths in the width direction (axial direction) and diameters of the shaft holes Rb. In addition, the workpiece | work affixed on the carrier tape T is a sheet-like thing, and is affixed on the surface of the carrier tape T with a predetermined pitch.

  As shown in FIG. 1, the tape reel device 1 includes a machine base 11, a roll holding shaft 12 that holds the tape roll R in its shaft hole Rb, and a roll holding shaft 12 that is installed on the machine base 11. An apparatus frame 13 that is horizontally and rotatably supported; a brake mechanism 14 that is supported by the apparatus frame 13 and that is disposed at a base end portion of the roll holding shaft 12 to prevent idling of the roll holding shaft 12; An unillustrated air supply device (air supply means) for supplying air to the roll holding shaft 12. A control device (not shown) is connected to each power system of the tape reel device 1 to control each drive operation.

  The apparatus frame 13 is erected on the machine base 11 and supports the bearing frame 21 and the case-like frame 22 while supporting the roll holding shaft 12, the case-like frame 22 that supports the braking mechanism 14, and the machine frame 11. And a main frame 23. The main frame 23 is a plate having a circular through hole.

  The bearing frame 21 is integrally formed by a circular tube frame portion 27 provided so as to penetrate the main frame 23 and a flange-shaped disk frame portion 26 provided at an end portion of the circular tube frame portion 27. The circular tube frame portion 27 supports the roll holding shaft 12 horizontally and rotatably via a pair of ball bearings 38 and 38 to be described later. An air inflow hole 27 a for supplying air from an air supply device is formed below the circular tube frame portion 27.

  The case-like frame 22 is formed in a bottomed cylindrical shape, and the opening side is attached to the main frame 23. A braking mechanism 14 is supported on the bottomed portion of the case-like frame 22. The bearing frame 21 supports the roll holding shaft 12 horizontally, and the case-like frame 22 is disposed so as to cover the base end side (main shaft 31 described later) of the braking mechanism 14 and the roll holding shaft 12.

  The brake mechanism 14 has a sliding contact portion (not shown) on the shaft side, and generates resistance against rotational movement by bringing the sliding contact portion into sliding contact with the inner surface of the housing, thereby braking the rotation of the roll holding shaft 12. The braking mechanism 14 applies tension to the carrier tape T that is being sent and prevents the carrier tape T from sagging when the winding device stops.

  The roll holding shaft 12 includes a main shaft 31 rotatably supported by the apparatus frame 13 (bearing frame 21), a main reel shaft 32 fixed to a tip portion of the main shaft 31, and a main reel shaft at an intermediate portion of the main reel shaft 32. A bellows shaft (expandable shaft) 33 provided so as to cover 32, a proximal-side tape presser 34 and a distal-side tape presser 35 that are positioned so as to sandwich the carrier tape T wound outside the main reel shaft 32; It has. The “reel shaft” referred to in the claims includes a main shaft 31 and a main reel shaft 32.

  Between the bearing frame 21 and the main shaft 31, a pair of ball bearings 38, 38 that rotatably support the main shaft 31 are incorporated. The pair of ball bearings 38, 38 are disposed at both ends of the bearing frame 21, and an air supply device is provided between the pair of ball bearings 38, 38 in the circular tube frame portion 27 (bearing frame 21). An annular air chamber 39 into which the air enters is formed. A pair of O-rings 40, 40 are respectively provided on the air chamber 39 side of the pair of ball bearings 38, 38, and the air flowing into the air chamber 39 from the air inflow hole 27 a is on the ball bearing 38, 38 side. It is configured not to leak. A stopper nut 41 that presses the ball bearing 38 is disposed on the proximal end side of the main shaft 31.

  The base end portion of the main shaft 31 is locked to the braking mechanism 14, the intermediate portion is rotatably supported by the bearing frame 21, and the main reel shaft 32 is pivotally attached to the distal end portion. An air inflow passage 31 a communicating with the main reel shaft 32 is formed at the shaft center of the main shaft 31. The main shaft 31 is formed with a radial communication hole 31b that communicates the air chamber 39 and the air inflow channel 31a. The air that has flowed into the air chamber 39 from the air supply device via the air inflow hole 27a is sent to the bellows shaft 33 through the air inflow passage 31a.

  The main reel shaft 32 includes three cylindrical shafts 44, 45, 46, a proximal cylindrical shaft 44, a middle cylindrical shaft 45, and a distal cylindrical shaft 46 connected in a nested manner, and a distal cylindrical shaft 46. And a reel end member 47 provided at the tip. The three cylindrical shafts 44, 45, and 46 are formed to have a smaller diameter toward the tip. The proximal cylindrical shaft 44 is formed with a proximal pin long hole 44a extending in the axial direction, and the intermediate tubular shaft 45 has a proximal guide pin 45a engaged with the proximal pin long hole 44a. Is formed. The distal cylindrical shaft 46 is formed with a distal pin long hole 46a extending in the axial direction, and the intermediate cylindrical shaft 45 is formed with a distal guide pin 45b that engages with the distal pin long hole 46a. Accordingly, the proximal cylindrical shaft 44, the intermediate cylindrical shaft 45, and the distal cylindrical shaft 46 are configured to be slidable with each other in a rotationally stopped state. Since the proximal cylindrical shaft 44 is fixed to the main shaft 31, the intermediate cylindrical shaft 45 projects from the proximal cylindrical shaft 44 and the distal tubular shaft 46 projects from the intermediate cylindrical shaft 45. Yes.

  Thus, the main reel shaft 32 is configured to be extendable and contractable in the axial direction by the three cylindrical shafts 44 and 45.46 of the nested type. Therefore, the bellows shaft 33 can be extended corresponding to the length of the tape roll R in the axial direction, and the telescopic bellows shaft 33 can be appropriately supported.

  The distal end cylindrical shaft 46 is formed so that a plurality of communication holes 46 b communicating the air inflow channel 31 a and the inner space of the bellows shaft 33 are dispersed. The air supplied from the main shaft 31 passes through the cylindrical shafts 44, 45, and 46 and flows into the bellows shaft 33 from the plurality of communication holes 46b.

  The reel end member 47 is formed in a bowl shape with a cylindrical portion and a disc portion, and is attached to the tip of the tip cylindrical shaft 46 at the center of the disc portion. Further, an end member screw portion 47a is screwed on the outer peripheral surface (the outer peripheral surface of the cylindrical portion), and a press screw portion 35a of a tip tape presser 35 to be described later is screwed to the end member screw portion 47a. To do. Each component of the main reel shaft 32 is formed with a smaller diameter than the shaft hole Rb of the tape roll R.

  The bellows shaft 33 is formed of a flexible material in a bellows shape, and is configured to protrude forward in the axial direction. One of the bellows shafts 33 is attached to the distal end of the proximal cylindrical shaft 44 and the other is attached to the reel end member 47 so that the air supplied into the bellows shaft 33 does not leak to the outside. It is airtightly bonded. When air is supplied into the bellows shaft 33 and the bellows shaft 33 extends in the axial direction, the main reel shaft 32 extends in the axial direction by the three cylindrical shafts 44, 45 and 46. Although details will be described later, when air flows into the bellows shaft 33, the bellows shaft 33 extends in the axial direction and expands in the radial direction.

  The proximal end tape retainer 34 and the distal end tape retainer 35 are formed in a disc shape with a boss having a hole in the center. The proximal tape presser 34 is pivotally attached to the outer peripheral surface of the proximal cylindrical shaft 44. The front end tape retainer 35 is formed separately from a disc portion 35b and a boss portion 35c, and the end member screw of the reel end member 47 is formed by a retainer screw portion 35a screwed on the inner peripheral surface of the boss portion 35c. Screwed into the portion 47a. When attaching the tape roll R, the front end tape retainer 35 is removed from the reel end member 47, the tape roll R is set on the roll holding shaft 12, and then the disc portion 35 b of the front end tape retainer 35 is attached to the tape roll R. And the boss portion 35c is screwed. At this time, the carrier tape T of the tape roll R is positioned by the proximal end tape retainer 34 and the distal end tape retainer 35.

  Next, with reference to FIG. 2, the attachment operation (attachment / detachment operation) of the tape roll R in the tape reel device 1 will be described. This operation is performed from a state in which the main reel shaft 32 and the bellows shaft 33 are contracted and a state in which the front end tape presser 34 is removed (see FIG. 2A).

  First, the tape roll R is fitted to the roll holding shaft 12 in alignment. At this time, since the bellows shaft 33 is in a contracted state (particularly in the radial direction), the bellows shaft 33 can be easily fitted and loosely fitted between the shaft hole Rb of the tape roll R and the bellows shaft 33. (See FIG. 2B).

  Next, the air supply device is driven to extend and expand the bellows shaft 33. When supplied to the air inflow hole 27a of the bearing frame 21 by the air supply device, the air passes through the air chamber 39, the air inflow passage 31a in the main shaft 31, and the three cylindrical shafts 44, 45, 46, and the tip. Air is supplied to the inside of the bellows shaft 33 from the plurality of communication holes 46 b of the cylindrical shaft 46.

  When air is supplied into the bellows shaft 33, the bellows shaft 33 extends in the axial direction and expands in the radial direction. When the bellows shaft 33 extends in the axial direction, the reel end member 47 to which the bellows shaft 33 is attached is pushed toward the front end in the axial direction. As a result, the main reel shaft 32 is moved by the three cylindrical shafts 44, 45, 46. The reel end member 47 extends in the axial direction and moves to the vicinity of the end of the tape roll R. When the bellows shaft 33 expands in the radial direction, the peripheral portion of the bellows shaft 33 abuts on and presses the inner peripheral surface of the tape roll R (core Ra) to firmly hold the tape roll R (FIG. 2 ( c)).

  Thereafter, the leading end tape retainer 35 of the tape roll R is screwed into the reel end member 47, and positioning is performed such that the wound carrier tape T is sandwiched together with the proximal end tape retainer 34 (see FIG. 2D). . Thereby, the attachment operation is completed.

  The removal operation of the tape roll R is performed by performing the attachment operation in the reverse order. That is, first, after removing the front end tape retainer 35, the user presses the reel end member 47 to contract the bellows shaft 33, and then removes the tape roll R from the roll holding shaft 12. Removal operation is performed.

  As described above, since the tape roll R is supported by the expanded bellows shaft 33, the tape roll R can be easily attached and detached, and the tape roll R having a different diameter of the shaft hole Rb is appropriately held. be able to. In addition, the present apparatus can have a simple configuration, and the cost for production of the present apparatus can be reduced. Furthermore, since the bellows shaft 33 is configured to be extendable and contractible in the axial direction, the space for attaching the tape roll R and the space when the bellows shaft 33 is extended can be overlapped, and the space efficiency can be improved.

  Next, with reference to FIG. 3 and FIG. 4, especially a different part is mainly demonstrated about the tape reel apparatus 1 which concerns on 2nd Embodiment of this invention. In this embodiment, the roll holding shaft 12 includes a main shaft 31 that is rotatably supported by the apparatus frame 13, a main reel shaft 32 that is fixed to the tip of the main shaft 31, and a carrier that is wound outside the main reel shaft 32. A base end side tape retainer 34 and a distal end side tape retainer 35 that are positioned so as to sandwich the tape T, and four rectangular bellows (bellows member) that are disposed evenly and radially in the circumferential direction of the main reel shaft 32. 51. The “reel shaft” referred to in the claims includes a main shaft 31 and a main reel shaft 32.

  The main reel shaft 32 includes a base end cylindrical shaft 44 and a front end cylindrical shaft 46 connected in a nested manner, and a reel end disc 52 provided on the front end cylindrical shaft 46, and the reel end The partial disk 52 prevents the air flowing into the distal end cylindrical shaft 46 from leaking from the end. Further, on the outer peripheral surface of the intermediate portion of the distal end cylindrical shaft 46, four bellows installation hole portions 53 extending in the axial direction and provided with the angular bellows 51 are formed. A plurality of air supply holes 54 are formed on the inner peripheral surface of the intermediate portion of the tip cylindrical shaft 46 to communicate with each bellows installation hole 53 and the tip cylindrical shaft 46. Further, on the outer peripheral surface of the distal end portion of the distal cylindrical shaft 46, a cylindrical shaft screw portion 55 that is screwed into the distal end side tape retainer 35 (the boss portion 35c thereof) is formed.

  The rectangular bellows 51 is installed in the bellows installation hole 53 so as to face the radially outer side of the tip cylindrical shaft 46, and has a bellows shape, a rectangular cross section, and extends in the axial direction of the tip cylindrical shaft 46. Is formed. The corner bellows 51 is closed at the tip, and the joint between the corner bellows 51 and the tip cylindrical shaft 46 is airtight. Therefore, when the air that has flowed into the distal cylindrical shaft 46 flows into the angular bellows 51 from the air supply hole 54, the angular bellows 51 extends and protrudes radially outward of the distal cylindrical shaft 46. The protruding end of the bellows 51 is pressed against the inner peripheral surface of the tape roll R, whereby the tape roll R is supported.

  By supporting the tape roll R with the square bellows 51 arranged in the four directions of the distal end cylindrical shaft 46 in this way, the tape roll R can be easily attached and the diameter of the shaft hole Rb is different. R can be held appropriately. In addition, the present apparatus can have a simple configuration, and the cost for production of the present apparatus can be reduced. In addition, by configuring the main reel shaft 32 with a plurality of cylindrical shafts 44 and 46 connected by nests, the tape rolls R having different lengths in the width direction can be appropriately held, and the present apparatus The installation space can be reduced when not in use. Further, the space for attaching the tape roll R and the space for extending the main reel shaft 32 can be overlapped, and the space efficiency can be improved.

  With the configuration as described above, after the tape roll R is set outside the bellows shaft 33, the bellows shaft 33 is expanded to contact the inner peripheral surface of the tape roll R, so that the tape roll R is Hold. For this reason, attachment of the tape roll R is easy and the tape roll R from which the diameter of the axial hole Rb differs can be hold | maintained appropriately. In addition, the present apparatus can have a simple configuration, and the cost for production of the present apparatus can be reduced. Further, since the bellows shaft 33 is configured to be extendable in the axial direction, if the tape roll R is applied in a contracted state and then the bellows shaft 33 is extended, the mounting space for the tape roll R and the bellows The space when the shaft 33 is extended can be overlapped, and the space efficiency can be improved.

  In this embodiment, the main reel shaft 32 is configured to extend by the extension force of the bellows shaft 33. However, the user may pull the reel end member 47 to extend the main reel shaft 32. Alternatively, the main reel shaft 32 may be extended by another mechanical mechanism. In addition, the main reel shaft 32 may be contracted manually or automatically.

It is a side sectional view showing typically the tape reel device of this embodiment. It is explanatory drawing shown about the attachment operation | movement of the tape roll in a tape reel apparatus. It is a side sectional view showing typically the roll holding axis of a 2nd embodiment. It is sectional drawing which showed the bellows axis periphery of 2nd Embodiment.

Explanation of symbols

  1: tape reel device, 13: device frame, 31: main shaft, 31a: air inflow channel, 32: main reel shaft, 33: bellows shaft, 44: proximal cylindrical shaft, 45: intermediate cylindrical shaft, 46: Tip cylindrical shaft, 46b: communication hole, T: carrier tape, R: tape roll, Rb: shaft hole

Claims (5)

A tape reel device in which a tape roll in which a tape-shaped member is wound around a core is detachably mounted in an axial direction,
A reel shaft that is formed with a smaller diameter than the shaft hole of the tape roll and that has an air flow path formed in the shaft center;
A bearing that rotatably supports the reel shaft on one side;
A bellows-like telescopic shaft that is provided to be extendable in the axial direction on the protruding side of the reel shaft, communicates with the air flow path, and expands by air to hold the tape roll;
A tape reel device comprising: compressed air supply means for supplying air into the telescopic shaft from the bearing side via the air flow path and expanding the telescopic shaft. The reel shaft is composed of a plurality of cylindrical shafts connected in a nested manner,
The telescopic shaft has one end fixed to the proximal cylindrical shaft and the other end fixed to the distal end of the distal cylindrical shaft,
The tape reel device according to claim 1, wherein a communication hole communicating with the telescopic shaft is formed in at least the cylindrical shaft on the distal end side. A tape reel device in which a tape roll in which a tape-shaped member is wound around a core is detachably mounted in an axial direction,
A reel shaft that is formed with a smaller diameter than the shaft hole of the tape roll and that has an air flow path formed in the shaft center;
A bearing that rotatably supports the reel shaft on one side;
A plurality of bellows members that are provided on the outer periphery of the reel shaft, extend in the axial direction and extend in the radial direction, and expand by air introduced into the air flow path to hold the tape roll;
A tape reel device, comprising: compressed air supply means for supplying air into the plurality of bellows members from the bearing side through the air flow path and expanding each bellows member in a radial direction. . The reel shaft is composed of a plurality of cylindrical shafts connected in a nested manner,
The tape reel device according to claim 3, wherein the plurality of bellows members are provided at least on the cylindrical shaft on the tip side.   The tape reel device according to claim 2 or 4, wherein the plurality of cylindrical shafts are slidably engaged with each other in a rotation-stopped state.

Images