JPH10242690A - Board transfer system in electronic part mounting line and endless belt replacing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a board transfer system in an electronic part mounting line where an endless belt can be replaced quickly and easily, and a method for replacing an endless belt. SOLUTION: A protrusion for guiding an endless belt 1 is removed partially to obtain a removed part A. At the time of replacing the belt 1, the removed part A of the belt 1 is aligned with any one end part of a guide member 3. After the belt 1 is loosened, the removed part A is bent in a horizontal plane and a row of following protrusion 1A are moved to the opposite end part along the guide member 3 while being guided by a row of protrusions 1A contiguous to the removed part A. Subsequently, the row of protrusions 1A is separated entirely from a guide groove 3a and the belt 1 is removed from the guide member 3. According to the method, the belt 1 can be replaced quickly and easily while mounting a pressing member as it is.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for transferring substrates on an electronic component mounting line, such as an electronic component mounting device, a screen printing device for cream solder, and a visual inspection device for electronic components.

[0002]

2. Description of the Related Art Electronic component mounting lines such as an electronic component mounting device, a screen printing device for cream solder, and a visual inspection device for electronic components are used to mount electronic components on a substrate conveyed on a conveyor and to perform a visual inspection. Various operations are performed. Belt conveyors are widely used as conveyors. Hereinafter, a substrate transfer device in a conventional electronic component mounting line will be described with reference to the drawings.

FIG. 8 is a partial perspective view of a substrate transfer device in a conventional electronic component mounting line. In FIG.
Reference numeral 1 denotes an endless belt, and a projection 1a is provided at the center of the lower surface thereof. The projections 1 a are formed in a large number as a projection row along the longitudinal direction of the belt 1. Belt 1
Travels on the upper surface of the guide member 3 integrated with the frame 2. A guide groove 3a is provided on the upper surface of the guide member 3 along the longitudinal direction, and the projection 1a is fitted into the guide groove 3a. Reference numeral 4 denotes a holding member, which is detachably mounted on the frame 2 by bolts 5. The pressing member 4 guides the upper surface of the belt 1 when the belt 1 runs.

The belt 1 is wound around a driving pulley or a driven pulley (not shown). As the driving pulley rotates, the belt 1 runs on the guide member 3. Protrusion 1a
Are fitted in the guide grooves 3a, so that the belt 1 does not slip off from the pulleys during running and does not shift laterally on the guide member 3.

[0005]

However, the belt provided with the guide protrusions 1a does not cause the belt to be displaced or displaced during running, but is inconvenient for removing and attaching the belt when replacing the belt. That is, the belt 1 is sandwiched between the guide member 3 and the holding member 4,
It is regulated in the vertical direction. The protrusion 1a is restricted in the horizontal direction by fitting into the guide groove 3a.
Therefore, in order to replace the belt 1, it is necessary to remove the pressing member 4 and then to release the projection 1a from the guide groove 3a.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for transferring a substrate in an electronic component mounting line and a method for replacing the endless belt, which can easily replace the endless belt.

[0007]

According to the present invention, there is provided an apparatus for transporting a substrate in an electronic component mounting line, comprising: an endless belt for transporting the substrate; and a guide member on the lower surface side of the endless belt for guiding the traveling of the endless belt. And a pressing member on the upper surface side of the endless belt for pressing the upper surface side of the endless belt, a projection row is provided on the lower surface of the endless belt along the longitudinal direction thereof, and A guide groove into which the projection row is fitted is formed along the longitudinal direction, and the projection row is partially removed. The removed portion is used as a leading section for removing the endless belt from the guide groove.

Further, according to the present invention, there is provided a method of exchanging an endless belt of an apparatus for transporting a substrate in an electronic component mounting line, wherein the endless belt for transporting a substrate and the traveling of the endless belt on the lower surface side of the endless belt are guided. A guide member, and a pressing member on the upper surface side of the endless belt for pressing the upper surface side of the endless belt, a projection row is provided on the lower surface of the endless belt along the longitudinal direction thereof, and the upper surface of the guide member A method of exchanging an endless belt of a substrate transport device in an electronic component mounting line in which a guide groove in which the projection row is fitted is formed along the longitudinal direction thereof, wherein a removal portion in which the projection row is partially removed is provided as a guide member. A step of loosening the endless belt, a step of bending the removing section in a horizontal plane, and projecting a projection row of a portion protruding from an end of the guide member to the guide section. The step of displacing inward of the guide member, and using the projection row displaced inward of the guide member as a leading portion, moving the succeeding projection row along the side surface of the guide member to the opposite end to move the entire projection row. Removing the endless belt from the guide member by detaching from the guide groove.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, when exchanging an endless belt, first, the removing section is located at one end of the guide member, the endless belt is loosened, and the removing section is bent in a horizontal plane to thereby remove the guide member. The projection row at the portion protruding from the end is displaced inward of the guide member. Next, the projection row is moved to the opposite end along the side surface of the guide member using the projection row as a leading portion, whereby the projection row is separated from the guide groove, and the endless belt can be removed from the guide member.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a board transfer device in an electronic component mounting line according to an embodiment of the present invention, FIG. 2 is a front view of the board transfer device in the electronic component mounting line, and FIG. , FIG. 4 is a partial plan view of the board transfer device in the electronic component mounting line, FIG. 5 is a side view of a belt of the board transfer device in the electronic component mounting line, and FIG. 7 (a), 7 (b), 7 (c), 7 (d), and 7 (a), 7 (b), 7 (d), and 7 (c) are enlarged sectional views of a belt of a substrate transfer device in the electronic component mounting line.
(E) is a partial plan view of the board transfer device in the electronic component mounting line.

First, referring to FIGS. 1 and 2, the overall structure of a board transfer device in an electronic component mounting line will be described. In FIG. 1, reference numeral 1 denotes an endless belt, which has a guide row at the center as described later. The belt 1 runs on the upper surface of the guide member 3. The guide member 3 is integrated with the frame 2. The upper surface of the belt 1 is guided by a pressing member 4. The holding member 4 is mounted on the frame 2 by bolts 5. As shown in FIG. 2, the belt 1 includes a driving pulley 10 and a driven pulley 11.
Has been hung around. The driving pulley 10 is driven by a motor (not shown). The driven pulley 11 can be slid horizontally by a tension bolt (not shown).

As shown in FIGS. 1 and 2, a substrate 6 is placed on the upper surface of the belt 1. Accordingly, the substrate 6 is conveyed by driving the motor and rotating the belt 1. Substrate 6
A transfer head 7 is provided above. A suction nozzle 8 is mounted on the transfer head 7. Suction nozzle 8
Vacuum sucks the electronic component 9 mounted on the substrate 6. The transfer head 7 is moved in the X direction and the Y direction by a movable table (not shown).
The electronic component is mounted horizontally at a predetermined position on the substrate 6.

Next, with reference to FIGS. 3 and 4, details of the mounting portion of the belt 1 will be described. As shown in FIG. 3, the belt 1 has a protrusion 1a at the center of the lower surface along the longitudinal direction. A guide groove 3a is provided on the upper surface of the guide member 3 along the longitudinal direction. A similar groove 10a is provided in the center of the circumferential surface of the pulley 10. When the belt 1 is mounted, the protrusion 1a is fitted in the groove 10a of the pulley 10 and the guide groove 3a of the guide member 3. The upper surface of the belt 1 is guided by a pressing member 4. The holding member 4 is provided with a mounting hole 12. Also, screw holes 1 are provided on the upper surface of the frame 2.
3 has been processed. The holding member 4 is detachably mounted by screwing the bolt 5 into the screw hole 13 through the mounting hole 12. The protrusion 1a of the belt 1 is
a and the guide groove 3a, and furthermore, the upper surface of the belt 1 is guided by the pressing member 4, so that the belt 1 does not come off from the pulley 10 and the lateral displacement on the guide member 3 also occurs. Does not occur.

As shown in FIG. 4, a tapered cut portion 3b is provided at the tip of the guide groove 3a. For this reason, even if the pulley 10 and the guide member 3 are slightly misaligned in the horizontal direction, the protrusion 1a of the belt 1 can smoothly enter the guide groove 3a, so that the protrusion 1a is positioned at the entrance of the guide groove 3a. This prevents damage from being hit by the edge.

Next, the belt 1 will be described with reference to FIGS. The belt 1 is manufactured using an elastomer such as urethane rubber as a material. Since these materials alone are not sufficient in strength, in order to increase the tensile strength, a plurality of wires 1d are buried in the tensile direction and reinforced when the belt 1 is manufactured as shown in FIG. As described above, the belt 1 is provided with guide projections 1a intermittently at the center of the cross section and in a row to form a projection row 1A. In FIG. 6, a cut 1c is formed at the bottom of the recess 1b where the protrusion 1a is cut off. The notch 1 c enhances the flexibility of the belt 1.

Further, as shown in FIG. 5, the protrusion 1a of the belt 1 is partially removed, and a removed portion A is formed.
The function of the removing unit A will be described later. Also, in order that the removal portion A can be easily determined from the upper surface of the belt 1,
A mark M is provided on the upper surface.

The board transfer device in the electronic component mounting line has the above-described configuration, and the operation thereof will be described below with reference to the drawings. In FIG. 2, the substrate 6 is set on the belt 1. As the belt 1 travels, the substrate 6 is transported to a predetermined position. Next, the transfer head 7 performs operations such as mounting of electronic components on the substrate 6. When the operation is completed, the substrate 6 is transferred to the next stage.

By the way, the conveyor belt is generally a consumable part and needs to be periodically replaced. Hereinafter, FIG.
The replacement of the belt 1 will be described with reference to (a), (b), (c), (d), and (e). Here, the holding member 4 is omitted for easy viewing of the drawing. First, the position of the removed portion A of the protrusion 1 a of the belt 1 is confirmed by the mark M on the upper surface of the belt 1. Next, as shown in FIG. 7A, the removed portion A is aligned with one of the ends of the guide member 3 (the end E1 in FIG. 7A). Next, the tension bolt of the driven pulley 11 is loosened, and the driven pulley 11
Slide (see arrow a). With this, belt 1
Is loosened and can be removed from the driven pulley 11.

Next, as shown in FIG. 7 (b), the removed portion A of the belt 1 is bent in the horizontal plane, and the portion B projecting row 1A projecting from the end of the guide member 3 is inserted into the guide member 3 ( (See arrow b). Then, FIG.
As shown in (c) and (d), the subsequent terminal row 1A is moved toward the opposite end E2 along the side surface S of the guide member 3 using the projection row 1A as a leading portion (arrows c and c). d
reference). By moving the projection row 1A over the entire length of the guide member 3, all the projection rows 1A are separated from the guide grooves 3a (see arrow e), and as shown in FIG. Removed from 3.

Next, a method for newly attaching the belt 1 will be described. In this case, a procedure reverse to the above-described order of removal may be performed. That is, the belt 1 is set along the side surface S of the guide member 3, and the removal portion A is
(E2 in the example of FIG. 7E). Next, the removal portion A is bent in the horizontal plane to displace the projection row 1A in the direction opposite to the arrow e shown in FIG. 7D, so as to match the position on the extension of the guide groove 3a. Next, the projection row 1A is moved to the left to fit into the guide groove 3a. Next, the projection row 1A is fitted into the guide groove 3a by moving the projection row 1A until the removed portion A reaches the end on the opposite side of the guide member 3 (the direction opposite to the arrow d) (FIG. 7 ( b)). Thereafter, the belt 1 is wound around the pulley 11, and the pulley 11 is slid to adjust the tension, thereby completing the attachment of the belt 1.

[0021]

According to the present invention, there is provided a removing portion in which the protrusion of the endless belt is partially removed, the removing portion is located at the end of the guide member, and the removing portion is bent in a horizontal plane. The endless belt can be quickly and easily replaced while the holding member is mounted by fitting or removing the projection row adjacent to the removing section as a leading section in the guide groove.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view of a board transfer device in an electronic component mounting line according to an embodiment of the present invention.

FIG. 2 is a front view of a board transfer device in the electronic component mounting line according to the embodiment of the present invention;

FIG. 3 is a partial perspective view of a board transfer device in an electronic component mounting line according to an embodiment of the present invention.

FIG. 4 is a partial plan view of a board transfer device in an electronic component mounting line according to an embodiment of the present invention.

FIG. 5 is a side view of a belt of the board transfer device in the electronic component mounting line according to the embodiment of the present invention.

FIG. 6 is an enlarged cross-sectional view of a belt of the board transfer device in the electronic component mounting line according to the embodiment of the present invention.

FIG. 7A is a partial plan view of a board transfer device in an electronic component mounting line according to one embodiment of the present invention; FIG. 7B is a partial plan view of a board transfer device in an electronic component mounting line according to one embodiment of the present invention; Plan view (c) Partial plan view of a board transfer device in an electronic component mounting line according to one embodiment of the present invention (d) Partial plan view of a board transfer device in an electronic component mounting line according to one embodiment of the present invention (E) Partial plan view of a board transfer device in an electronic component mounting line according to an embodiment of the present invention.

FIG. 8 is a partial perspective view of a substrate transfer device in a conventional electronic component mounting line.

[Explanation of symbols]

 Reference Signs List 1 belt 1a protrusion 2 frame 3 guide member 3a guide groove 4 holding member 6 substrate 10 drive pulley

Claims (2)

[Claims] An endless belt for transporting a substrate, a guide member on a lower surface side of the endless belt for guiding the traveling of the endless belt, and an upper surface side of the endless belt on an upper surface side of the endless belt. A holding member for holding down, and a projection row is provided on the lower surface of the endless belt along the longitudinal direction thereof,
Further, a guide groove into which the projection row is fitted is formed along the longitudinal direction on the upper surface of the guide member, and the projection row is partially removed, and the removed portion is used as a leading section for removing the endless belt from the guide groove. A substrate transfer device in an electronic component mounting line. 2. An endless belt for transporting a substrate, a guide member on a lower surface side of the endless belt for guiding the traveling of the endless belt, and an upper surface side of the endless belt on an upper surface side of the endless belt. A holding member for holding down, and a projection row is provided on the lower surface of the endless belt along the longitudinal direction thereof,
Further, the method is a method of exchanging an endless belt of a substrate transfer device in an electronic component mounting line in which a guide groove in which the projection row is fitted is formed along the longitudinal direction on the upper surface of the guide member, and the projection row is partially removed. A step of positioning the removing portion at one end of the guide member, a step of loosening the endless belt, and bending the removing portion in a horizontal plane to project a row of protrusions protruding from the end of the guide member into the guide member. And the projection row displaced inward of the guide member is used as a leading portion, and the subsequent projection row is moved to the opposite end along the side surface of the guide member to move the entire projection row from the guide groove. Removing the endless belt from the guide member by detaching the endless belt from the guide member.