JPH0751840Y2 - Substrate transfer mechanism - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substrate transfer mechanism, and more particularly to a substrate transfer device suitable for transferring a substrate after dipping.

[0002]

2. Description of the Related Art A conventional substrate transfer mechanism is constructed as shown in FIGS. 8 and 9, and 11 in FIG.
The two rails that make up 0 are shown. These rails 11 are arranged at a predetermined interval suitable for supporting the substrate 15, and a groove 12 for inserting and supporting the belt 13 is formed near the upper end portion of the rail 11. Pulleys 17 for rotating the belt 13 are arranged at both ends of the rail 11, and the pulleys 17 facing each other are provided.
Are connected by a support rod 18. And support rod 18
Is rotated by a motor (not shown), the pulley 17 rotates, the rotation of the pulley 17 is transmitted to the belt 13, and the substrate 15 is conveyed. During this transportation, the electronic component 16 is set on the substrate 15. Reference numeral 19 indicates a rail width adjusting mechanism that adjusts the interval between the rails 11 according to the size of the board 15.

[0003]

A large amount of flux adheres to the substrate 15 coming out of the solder bath, and in the above-described conventional substrate transfer mechanism 10, the above-mentioned space is present between the belt 13 and the rail 11. There is a problem that the rotation of the belt 13 becomes difficult as the flux is clogged and the substrate 15 is transported more.

The present invention has been devised in view of the above problems, and it is an object of the present invention to provide a substrate transfer mechanism capable of smoothly transferring a large amount of substrates with a large amount of flux adhered thereto. Has an aim.

[0005]

In order to achieve the above object, a substrate transfer mechanism according to the present invention is a substrate transfer mechanism for transferring a substrate after dipping, wherein two rails for guiding the substrate are the same as those of the mechanism. A roller, which is arranged on both sides and is composed of a small roller portion that supports the substrate from below and a large roller portion that supports the substrate from a side end portion, is rotatably attached to the inner slope of the rail. Characterized by being lined up.

[0006]

According to the above construction, the roller for supporting and transporting the substrate is composed of the small roller portion for supporting the substrate from below and the large roller portion for supporting the substrate from the side end portion. Since the inner side surfaces of the rails are rotatably rotatably arranged, the substrate and the roller come into point contact with each other, which is different from the conventional surface contact between the substrate and the belt. The amount adhered to is extremely small. Further, since it is point-contact type, the frictional resistance between the bottom surface of the substrate and the roller is small, and the power required to convey the substrate is small.

Moreover, since the substrate is supported by the small roller portion and the large roller portion from the lower side and both end portions, stable conveyance is possible.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a substrate transfer mechanism according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an outline of the board transfer mechanism 30, and rails 3 are provided on both sides of the board transfer mechanism 30 with a predetermined interval regulated by the board 15.
2, 32 are provided. The rail 32 has an inner sloped surface 33 whose lower portion protrudes inward.
A plurality of rollers 34 are rotatably attached to the.
The roller 34 is a small roller portion 3 that supports the substrate 15 from below.
5 and a large roller portion 36 that supports the substrate 15 from the side end portion thereof, and a belt engaging portion 37 is formed on the inner side slope 33 side of the large roller portion 36 as shown in FIG. The roller portion 35, the large roller portion 36, and the belt engaging portion 37 are integrally formed. The roller 34 is rotatably supported by a support bolt 38 fixed to the inner inclined surface 33, and is rotated by driving a belt 39 engaged with the belt engaging portion 37. The belt 39 is driven by a motor (not shown).

The size of the substrate 15 that is normally transported is 120.
The diameter of the large roller portion 36 is set to about 20 mm according to the size of the substrate 15,
The distance between the rollers 34 is set to about 1 mm.

When the substrate 15 is carried in the substrate carrying mechanism 30 having such a structure, the motor is rotated and the belt 39 is driven in accordance with the rotation of the motor. By driving the belt 39, the rotational force is transmitted to the belt engaging portion 37, and the roller 34 is rotated. As the roller 34 rotates, the small roller portion 35 and the large roller portion 36
The substrate 15 supported by is transported.

At the time of this transportation, the substrate 15 is held by the small roller portion 3.
5, the large roller portion 36 is supported in a point contact manner as shown in FIG.
Also, the amount of adhesion to the large roller portion 36 can be extremely reduced. Further, by forming the roller 34 from a material such as Teflon (registered trademark) that does not easily adhere to the flux, the amount of the flux adhered to the roller 34 can be further reduced. Further, the belt engaging portion 37 is separated from the substrate 15 side by the large roller portion 36, so that flux does not enter between the belt engaging portion 37 and the belt 39,
The rotation of the roller 34 by the belt 39 is not hindered. Therefore, it is possible to ensure smooth conveyance of the substrate 15 due to the rotation of the roller 34.

Moreover, the substrate 15 is supported at two points by the small roller portion 35 from below and the large roller portion 36 from the side end portions, so that it is very stably supported by the roller 34.

Further, since the substrate 15 is supported by the rollers 34 in a point contact manner, the frictional resistance between the substrate 15 and the rollers 34 is small when the substrate 15 is conveyed, and the load applied to the motor can be made small. it can.

FIG. 4 shows an essential part of another embodiment of the substrate transfer mechanism according to the present invention. The difference from the embodiment shown in FIGS. 1 to 3 is that the belt engaging portion 41 is formed on the opposite side of the large roller portion 36 with the inner inclined side surface 33 interposed therebetween. With such a configuration, it is possible to more reliably prevent the flux from adhering to the belt 39. Other effects are similar to those of the above-mentioned embodiment.

FIG. 5 shows the essential parts of yet another embodiment. The difference between this embodiment and the embodiment shown in FIG. 4 is that instead of the belt engaging portion 41, a gear is used. Part 43
Is formed, and a gear (not shown) is also interposed between these gear portions 43 so that the driving force is transmitted by the gear portion 43 and the gears instead of the belt 39. . According to this embodiment, the rotational speeds of the plurality of rollers 34 can be easily adjusted arbitrarily. Other effects can be obtained in the same manner as in the case of the embodiment shown in FIGS.

FIGS. 6 and 7 show a slide mechanism 45 for moving the substrate 15 in still another embodiment, and the slide mechanism 45 has support frames 46, 4 at both ends thereof.
The guide rods 47, 47 of the sliding portion 50 are provided between the support frames 46. A cylinder 48 is arranged between the guide rods 47. Support frame 46 and guide rod 47
Penetrates through the sliding portion 50, and the sliding portion 50
It is configured to slide on the cylinder 48 in accordance with the movement of a piston (not shown) installed in the cylinder. Sliding part 50
A slide pin 51 that can move back and forth is provided on the upper part of the board. When the slide portion 50 moves on the cylinder 48 with the slide pin 51 protruding, the substrate 15 is pushed by the slide pin 51 and is conveyed. It has become so. The slide mechanism 45 is arranged below the roller 34.

In the present embodiment, since the substrate 15 is moved by the slide mechanism 45, the motor, the belt 39 and the belt engaging portion 37 are not required, and the roller 34 is rotatably supported on the inner side slope 33. It should have been done. Further, since the substrate 15 is supported by the roller 34 in a point contact manner, the frictional resistance between the substrate 15 and the roller 34 is small, and the power for transporting the substrate 15 can be extremely small.

[0018]

As is apparent from the above description, in the substrate transfer mechanism according to the present invention, two rails for guiding the substrate are arranged on both sides of the mechanism to support the substrate from below. Since a roller composed of a small roller portion and a large roller portion that supports the substrate from the side end is rotatably arranged in a row on the inner slant side surface of the rail, the substrate and the roller are Are in point-contact with each other, and the amount of flux adhered to the roller can be made extremely small. Further, the frictional resistance between the bottom surface of the substrate and the roller is reduced, and therefore the power required to convey the substrate can be reduced.

Moreover, the substrate can be supported from the lower side and both side ends by the small roller portion and the large roller portion, and stable conveyance can be realized.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing an embodiment of a substrate transfer mechanism according to the present invention.

FIG. 2 is a cross-sectional view showing a main part of a substrate transfer mechanism according to an embodiment.

FIG. 3 is a front view showing a main part of the substrate transfer mechanism according to the embodiment.

FIG. 4 is a sectional view showing a main part of a substrate transfer mechanism according to another embodiment.

FIG. 5 is a cross-sectional view showing a main part of a substrate transfer mechanism according to still another embodiment.

FIG. 6 is a plan view showing the outline of a slide mechanism according to still another embodiment.

FIG. 7 is a side view showing an outline of a slide mechanism.

FIG. 8 is a schematic perspective view showing a conventional substrate transfer mechanism.

FIG. 9 is a front sectional view showing a main part of a conventional substrate transfer mechanism.

[Explanation of symbols]

 15 Substrate 30 Substrate Transfer Mechanism 32 Rail 33 Inside Bevel Side 34 Roller 35 Small Roller Part 36 Large Roller Part

Claims (1)

[Scope of utility model registration request] 1. A substrate transport mechanism for transporting a substrate after dipping, wherein two rails for guiding the substrate are provided on both sides of the mechanism, and a small roller portion for supporting the substrate from below, A substrate transfer mechanism, wherein a roller including a large roller portion that supports the substrate from a side end portion is rotatably arranged in a row on the inner side slope of the rail.