JP4147971B2 - Belt-shaped body transport roller and belt-shaped body transport device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a belt-shaped body transport device used in a manufacturing process of a taping component in which an electronic component is held on a tape, and a belt-shaped body transport roller used therefor.
[0002]
[Prior art]
As a conventional tape (strip-shaped body) transport mechanism used in a manufacturing process of a taping component in which an electronic component is held on a tape, a transport mechanism as described below has been conventionally known.
[0003]
[Conventional example 1]
As shown in FIGS. 4A and 4B, this transport mechanism (conventional example 1) applies tension to the timing belt 53 that transmits driving from the reference side sprocket 51 to the driven side sprocket 52 by an idler 54. Thus, for example, a predetermined tension is applied to a tape (band-like body) 55 such as an embossed tape. Further, an insertion portion 56 for inserting a tip into a recess (not shown) of the tape 55 is disposed in the vicinity of the rear reference side sprocket 51, and the tip is inserted in the vicinity of the front driven sprocket 52. A sealing portion 57 is provided for sealing the recessed portion.
[0004]
4A shows an example in which tension is applied using a timing belt 53 by one idler 54, and FIG. 4B shows an upper portion of the timing belt 53 using two idlers 54a and 54b. The example which applied tension to two places of the lower part is shown.
[0005]
[Conventional example 2]
As shown in FIG. 5, the transport mechanism of the conventional example 2 has a reference side sprocket 51 disposed on the front side of the tape (band-like body) 55 in the advancing direction and a friction brake mechanism incorporated in the rear side sprocket 62. When the tape 55 is fed, a predetermined tension is applied to the tape 55 that is being transported by the friction brake mechanism of the rear sprocket 62 so that a tension is applied from the rear. I am doing so.
In FIG. 5, the parts denoted by the same reference numerals as those in FIGS. 4A and 4B indicate the same or corresponding parts.
[0006]
[Conventional Example 3]
As shown in FIG. 6, the transport mechanism of the conventional example 3 has a reference side sprocket 51 disposed on the rear side in the traveling direction of a tape (band) 55, and a driven sprocket 52 on the front side in the traveling direction is a torque motor (see FIG. 6). In this case, a predetermined tension is applied to the tape 55 so as to always apply a pulling force to the tape 55.
In FIG. 6, the same reference numerals as those in FIGS. 4A and 4B indicate the same or corresponding parts.
[0007]
[Problems to be solved by the invention]
However, in the case of the transport mechanism of the above-described conventional example 1, the structure becomes complicated. In particular, when two idlers 54a and 54b are used and tension is applied to the upper part and the lower part of the timing belt 53, There is a problem that the number of parts increases and the equipment cost increases. Further, the calculation of the tension applied to the tape 55 is complicated, and it is difficult to adjust the tension.
[0008]
Further, in the case of the transport mechanism of Conventional Example 2, since the reference side sprocket 51 is on the front side in the traveling direction, there is a problem that the positional accuracy of the tape 55 in the chip insertion portion 56 is low. Further, since the tension is applied by the friction brake mechanism, the tension is applied only when the tape is being fed. Therefore, there is a problem that the variation in the tension is large and the tape 55 is slack.
[0009]
In the case of the transport mechanism of Conventional Example 3, the reference-side sprocket 51 is on the rear side, but since tension is applied by a torque motor, the tension fluctuates when the tape 55 is pitch-fed. There is a point. In addition, when the torque motor cannot follow the tape feed acceleration, the tape 55 will sag, and there is a problem that the feed speed of the tape 55 cannot be increased.
[0010]
The present invention solves the above-mentioned problems, and it is possible to apply a stable tension to the belt-like body during both movement and stop of the belt-like body without requiring a complicated mechanism. And it aims at providing the conveyance roller and strip | belt-shaped body conveyance apparatus of a strip | belt-shaped body with easy adjustment of a tension | tensile_strength.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the belt-shaped conveyance roller of the present invention (Claim 1) is:
A substantially cylindrical sprocket that holds the strip,
A wheel coupled to the rotating shaft;
An arc-shaped first joint fixed to the sprocket;
An arc-shaped second joint fixed to the wheel,
The sum of the central angle of the first joint and the central angle of the second joint is less than 360 °, and the first joint and the second joint have a predetermined gap in the circumferential direction between one of the circumferential end surfaces. Are arranged adjacent to each other in the circumferential direction so as to face each other,
An elastic member that urges the first joint and the second joint away from each other is disposed in the gap.
[0012]
The belt-shaped conveyance roller of the present invention (Claim 1) includes a substantially cylindrical sprocket that holds the belt-shaped body, a wheel that is connected to the rotating shaft, an arc-shaped first joint that is fixed to the sprocket, and a wheel. An arc-shaped second joint that is fixed to the center of the first joint and the second joint so that the sum of the central angles is less than 360 °. In the gap (buffer) between the circumferential end surfaces of the first joint and the second joint that are arranged adjacent to each other in the circumferential direction so as to face each other via a predetermined gap (buffer) in the circumferential direction, Since the elastic member that urges the first joint and the second joint in the circumferential direction is disposed, the belt-like body is moved and stopped without requiring a complicated mechanism. Becomes stable tension even in the case of either can be applied to strip.
[0013]
That is, by disposing an elastic member for biasing the first joint and the second joint in the circumferential direction in the gap (buffer) between the circumferential end surfaces of the first and second joints facing each other. Even when the wheel (rotating shaft) stops, the sprocket can be rotated by an external force by the amount of the buffer, and when the sprocket is rotated in the direction in which the elastic member is compressed, the sprocket becomes an elastic member. The urging force tries to return to the original position (position where a predetermined buffer is secured). Accordingly, by using the transport roller of the present invention having such a mechanism as a driving roller or a driven roller of a tape feeding mechanism used for taping an electronic component in a manufacturing process of the taping component, for example, the movement of the belt-shaped body is performed. In both cases of the middle and the stopped state, it is possible to stably apply the tension by the urging force of the elastic member to the belt-like body between the driving roller and the driven roller.
[0014]
In addition, since it is easy to calculate the strength of the tension applied from the elastic member to the belt-like body, it is possible to easily adjust the magnitude of the tension applied to the belt-like body by replacing the elastic member with one having a predetermined characteristic. it can.
[0015]
In order to reliably perform the function of the transport roller of the present invention, it is necessary that the belt-like body is held on the sprocket of the transport roller against the applied tension.
[0016]
There is no particular restriction on the structure (mechanism) for holding the belt-like body by the sprocket constituting the conveying roller of the present invention,
(a) a configuration in which a fitting protrusion for holding a belt-like body in which a feed hole is formed is provided on the sprocket side;
(b) Configuration using a suction roll as a sprocket,
(c) A configuration in which the sprocket itself is formed of a material having a large frictional force such as rubber is exemplified.
[0017]
In addition, as a strip | belt-shaped body, the embossing tape etc. which are used for taping components are illustrated. However, the band-shaped body is not limited to an embossed tape or the like, and may be a green sheet formed on a carrier film, or may be a band-shaped metal tape or the like.
[0018]
Further, the belt-like body conveyance device of the present invention (Claim 2) is:
A belt-shaped body transport device comprising two transport rollers for holding and transporting the belt-shaped body, and a driving means for driving the transport roller,
The transport roller according to claim 1 is used for any one of the transport rollers.
[0019]
In the belt-like body conveyance device comprising two conveyance rollers for holding and conveying the belt-like body and driving means for driving the conveyance roller, the conveyance roller according to claim 1 is used as one of the conveyance rollers. Accordingly, even when pitch feeding is performed, it is possible to stably apply tension due to the urging force of the elastic member to the belt-like body between the two transport rollers.
[0020]
Therefore, for example, as a tape feeding mechanism used for taping an electronic component in the manufacturing process of the taping component, by using the belt-like body transport device of the present invention, the tape can be reliably and accurately positioned under a predetermined tension. Therefore, it is possible to efficiently manufacture a highly reliable taping component.
[0021]
In the belt-like body conveyance device of the present invention, the conveyance roller driving means may be provided on each of the two conveyance rollers, or only on one side. In addition, when each of the two transport rollers is provided with a driving unit, a mechanism for synchronizing the rotations of the two transport rollers is necessary. Further, when the driving means is provided only on one of the conveying rollers, a drive transmission mechanism such as an endless belt that transmits the driving force to the other conveying roller may be required.
[0022]
According to a third aspect of the present invention, there is provided a belt-like body conveyance device in which one of the two conveyance rollers is a driving roller disposed on the front side in the conveyance direction of the belt-like body and the other conveyance roller is a conveyance roller for the belt-like body. A driven roller disposed on the rear side in the direction, wherein the driven roller is a conveying roller according to claim 1.
[0023]
In the case where one of the two transport rollers is a driving roller disposed on the front side in the transport direction of the belt-shaped body and the other is a driven roller disposed on the rear side in the transport direction of the strip-shaped body, By using the conveying roller according to the first aspect, it is possible to reliably convey the belt-like body in a state where a predetermined tension is applied with high positional accuracy, and it is possible to make the present invention more effective.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be shown and the features thereof will be described in more detail.
[0025]
[Conveyor roller]
FIG. 1A is an exploded perspective view showing the configuration of a transport roller according to an embodiment of the present invention, and FIGS. 1B and 1C are views for explaining the operation of the transport roller of FIG.
The conveying roller 1 is fixed to the substantially cylindrical sprocket 2 that holds the belt-like body 15, the wheel 3 that is connected to the rotation shaft, the arc-shaped first joint 4 that is fixed to the sprocket 2, and the wheel 3. Arc-shaped second joint 5.
[0026]
The sum of the central angle of the first joint 4 and the central angle of the second joint 5 is less than 360 ° (in this embodiment, 345 ° (FIG. 1B)), and the first joint 4 and the second joint 5 are The circumferential end faces (4a, 5a) are arranged adjacent to each other in the circumferential direction so as to face each other with a predetermined gap (buffer) 6 in the circumferential direction. The angle θ is set to 15 °.
And the direction which spaces apart the 1st joint 4 and the 2nd joint 5 between the circumferential direction end surface 4a of the 1st joint 4 and the circumferential direction end surface 5a of the 2nd joint 5 which opposes via the clearance gap (buffer) 6. FIG. An elastic member (coil spring in this embodiment) 7 for biasing is provided.
[0027]
[Strip transporter]
FIG. 2 is a view showing a main part of a belt-like body transport device 20 using the transport roller 1 as a driven roller 12. The belt-like body transporting device 20 is used as a tape feeding mechanism of a taping machine used for taping an electronic component in a taping component manufacturing process, and holds and transports the belt-like body (for example, an embossed tape) 15. The driving roller 11 and the driven roller 12 are provided, and power is transmitted from the driving roller 11 to the driven roller 12 by a timing belt (endless belt) 13.
Further, the driving roller 11 is disposed on the rear side in the conveying direction (direction indicated by the arrow A) of the belt-like body 15, and the driven roller 12 is disposed on the front side in the conveying direction. It is comprised so that it may synchronize and rotate via 13.
[0028]
And in this strip | belt-shaped object conveyance apparatus 20, the conveyance roller 1 concerning one Embodiment of this invention comprised as shown in FIG.
An insertion portion 16 for inserting a chip into a concave portion (not shown) of the embossed tape 15 is disposed in the vicinity of the driving roller 11 on the rear side in the transport direction, and in the vicinity of the driven roller 12 side on the front side. A seal portion 17 is provided for sealing the recess into which the chip is inserted.
[0029]
[Operation of belt conveyor]
Next, operation | movement of the strip | belt-shaped material conveyance apparatus 20 comprised in this way is demonstrated, referring FIG.1 and FIG.3.
[0030]
(1) In transporting the embossed tape 15 which is a belt-shaped body, first, the sprocket 2 of the driven roller 12 is moved in the transport direction (arrow A) as shown in FIGS. 3 (a) and 3 (b). By rotating in the opposite direction (the direction indicated by the arrow B and the direction in which the coil spring 7 is compressed) to the driven roller 12 by the elastic force (biasing force) of the coil spring 7. A force (tension) to rotate in the transport direction is always applied.
That is, since the coil spring 7 is disposed in the gap (buffer) 6 between the circumferential end surface 4 a of the first joint 4 and the circumferential end surface 5 a of the second joint 5, Since the two joints 5 are urged away from each other and the sprocket 2 can be rotated by an external force by an angle θ of the gap (buffer) 6, the first force is applied by the urging force of the coil spring 7. The joint 4 and the second joint 5 try to return to their original positions (positions where a predetermined buffer is secured).
[0031]
(2) Then, in the state (1), the embossed tape 15 is sequentially set on the driving roller 11 and the driven roller 12 as shown in FIGS.
In this manner, as shown in FIG. 3C, in the state where the embossed tape 15 is set on the driving roller 11 and the driven roller 12, the conveying direction (arrow) is applied to the driven roller 12 by the elastic force of the coil spring 7. Since a force to rotate in the direction indicated by A) is applied, the embossed tape 15 to be conveyed by the driving roller 11 is always applied with a constant tension between the driving roller 11 and the driven roller 12. .
Therefore, even when the embossed tape 15 is pitch-fed, the tension applied to the embossed tape 15 can be made constant. Accordingly, it is possible to prevent the embossed tape 15 from sagging and to keep the positional accuracy of the embossed tape 15 high.
Therefore, by using this belt-shaped body conveyance device 20, it is possible to tap the electronic component reliably, and to manufacture a taping component that is efficient and highly reliable.
[0032]
In the transport roller 1 of the above embodiment, the magnitude of the tension applied to the embossed tape 15 can be easily adjusted by replacing the coil spring (elastic member) 7 with one having a predetermined characteristic (elasticity). it can.
[0033]
Furthermore, in the above-described embodiment, the case where the embossed tape is conveyed as a band has been described as an example. The present invention can be widely applied to the case where the belt-like body is conveyed.
[0034]
Moreover, in the said embodiment, although the conveyance roller of this invention is used as a driven roller, it is also possible to use as a drive roller. In the above embodiment, the drive roller is disposed on the rear side in the transport direction and the driven roller is disposed on the front side in the transport direction. However, the driven roller is disposed on the rear side in the transport direction and driven forward in the transport direction. It is also possible to configure so that a roller is provided.
[0035]
In the above embodiment, one of the two rollers is a driving roller and the other is a driven roller, and is configured to transmit power from the driving roller to the driven roller by a timing belt (endless belt). Although the case has been described as an example, each of the two transport rollers may have a driving unit. However, when each of the two transport rollers is provided with a driving unit, a mechanism for synchronizing the rotations of the two transport rollers is required.
[0036]
The invention of the present application is not limited to the above embodiment in other points as well, and relates to the size of the gap (buffer) between the first joint and the second joint, the type of elastic member, the use of the belt-like body conveyance device, etc. Various applications and modifications can be made within the scope of the invention.
[0037]
【The invention's effect】
As described above, the belt-shaped conveyance roller according to the present invention (Claim 1) includes the substantially cylindrical sprocket that holds the belt-shaped body, the wheel connected to the rotation shaft, and the arc-shaped first roller fixed to the sprocket. 1 joint and an arc-shaped second joint fixed to the wheel, the sum of the central angles of the first joint and the second joint is less than 360 °, and the first joint and the second joint are connected in the circumferential direction. A gap (buffer) is disposed adjacent to each other in the circumferential direction so that one of the end faces faces each other with a predetermined buffer (gap) between the circumferential end faces of the first and second joints facing each other. In addition, since an elastic member that urges the first joint and the second joint in a direction to separate them is disposed, the belt-shaped body can be pitch-fed without requiring a complicated mechanism. In either case the or stopped during the movement of the strip in the, it is possible to apply a stable tension to the strip.
Further, since it is easy to calculate the strength of the tension applied from the elastic member to the belt-like body, the tension can be easily adjusted by replacing the elastic member with one having a predetermined characteristic.
[0038]
In addition, since the belt-like body conveying device according to claim 2 uses the conveying roller according to claim 1 described above as one of the two conveying rollers, the two conveying rollers are used even when pitch feeding is performed. It is possible to stably apply tension by the urging force of the elastic member to the belt-like body between them.
Therefore, for example, as a tape feeding mechanism used for taping an electronic component in the manufacturing process of the taping component, by using the belt-like body transport device of the present invention, the tape can be reliably and accurately positioned under a predetermined tension. Therefore, it is possible to efficiently manufacture a highly reliable taping component.
[0039]
Further, as in the belt-shaped body conveyance device according to claim 3, one of the two conveyance rollers is a driving roller disposed on the front side in the conveyance direction of the belt-shaped body, and the other is disposed on the rear side in the conveyance direction of the belt-shaped body. In the case where the driven roller is a driven roller, the belt-like body can be reliably transported with high positional accuracy in a state where a predetermined tension is applied by using the transport roller according to claim 1 described above as the driven roller. Thus, the present invention can be more effectively realized.
[Brief description of the drawings]
1A and 1B are views showing a transport roller according to an embodiment of the present invention, in which FIG. 1A is an exploded perspective view, and FIGS. 1B and 1C are front views showing the operation thereof.
FIG. 2 is a diagram illustrating a main part of a belt-like body transport device including a transport roller according to an embodiment of the present invention as a driven roller.
FIGS. 3A, 3B, and 3C are views for explaining the operation of a belt-like body conveyance device that includes a conveyance roller according to an embodiment of the present invention as a driven roller.
FIGS. 4A and 4B are diagrams showing a conventional belt-like body transport mechanism. FIG.
FIG. 5 is a view showing another example of a conventional belt-like body transport mechanism.
FIG. 6 is a view showing still another example of a conventional belt-like body transport mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Conveyance roller 2 Sprocket 3 Wheel 4 1st joint 5 2nd joint 4a One of the circumferential direction end surfaces of 1st joint 5a One of the circumferential direction end surfaces of 2nd joint 6 Clearance (buffer)
7 Elastic member (coil spring)
11 Driving roller 12 Followed roller 13 Timing belt (endless belt)
15 Embossed tape (band)
16 Chip insertion part 17 Seal part 20 Band-shaped body transport device A Arrow B indicating the transport direction of the band-shaped body Arrow indicating the direction opposite to the transport direction of the strip-shaped body

Claims (3)

A substantially cylindrical sprocket that holds the strip,
A wheel coupled to the rotating shaft;
An arc-shaped first joint fixed to the sprocket;
An arc-shaped second joint fixed to the wheel,
The sum of the central angle of the first joint and the central angle of the second joint is less than 360 °, and the first joint and the second joint have a predetermined gap in the circumferential direction between one of the circumferential end surfaces. Are arranged adjacent to each other in the circumferential direction so as to face each other,
An elastic member for urging the first joint and the second joint in a direction to separate the first joint and the second joint is disposed in the gap. A belt-shaped body transport device comprising two transport rollers for holding and transporting the belt-shaped body, and a driving means for driving the transport roller,
A belt-like body conveyance device, wherein the conveyance roller according to claim 1 is used for any one of the conveyance rollers. Of the two transport rollers, one transport roller is a driving roller disposed on the front side in the transport direction of the belt-shaped body, and the other transport roller is a driven roller disposed on the rear side in the transport direction of the strip-shaped body. 3. The belt-like body conveyance device according to claim 2, wherein the conveyance roller according to claim 1 is used as the driven roller.

Images