CN113942860A

CN113942860A - Transmission mechanism for horizontal conveying substrate

Info

Publication number: CN113942860A
Application number: CN202011025572.7A
Authority: CN
Inventors: 施振四; 陈柏廷; 谢明哲; 简胜德
Original assignee: Taijun Technology Co ltd
Current assignee: Taijun Technology Co ltd
Priority date: 2020-07-17
Filing date: 2020-09-25
Publication date: 2022-01-18
Also published as: TW202204233A

Abstract

The invention discloses a transmission mechanism for horizontally conveying substrates, which comprises: a plurality of roller groups, arrange in proper order along this base plate advancing direction, every group roller group includes: a plurality of supporting rollers for conveying the substrate; two guide rollers for guiding the substrate when the substrate is conveyed; at least one central caterpillar drive wheel arranged between the rollers for supporting; the side track transmission wheel is arranged between the roller for supporting and the roller for guiding; the plurality of anti-falling plate tracks are connected between the central track transmission wheels of the two roller groups, and the central track transmission wheels drive the anti-falling plate tracks; and a plurality of transmission tracks connected between the side track transmission wheels of the two roller groups, so that the side track transmission wheels drive the transmission tracks.

Description

Transmission mechanism for horizontal conveying substrate

Technical Field

The present invention relates to a transmission mechanism for horizontally conveying substrates, and more particularly to a transmission mechanism for horizontally conveying substrates with zero-clamping plates and a track for preventing the plates from falling.

Background

As electronic products have become smaller and higher speed, circuit boards have been developed from single-sided boards to double-sided boards and multi-layer boards. Among them, the double-sided circuit board and the multi-layer circuit board have a large circuit area and a high assembly density, and are widely used.

The multilayer circuit board has many manufacturing processes, which generally includes inner layer circuit manufacturing, inner layer inspection, pressing, drilling, electroplating, outer layer conductive circuit manufacturing, circuit electroplating, outer layer inspection, solder mask, surface processing, cutting and forming, and the like. In order to improve the production efficiency, a substrate transport system is usually used to transport the substrate manufactured in the previous process to the worktable of the next process for manufacturing.

Referring to fig. 1a and 1b, a first known transmission mechanism for conveying a substrate is shown. The transmission mechanism 9 can provide the narrow and wide substrates 2 with both sides for simultaneous operation, such as hard board products or soft board products with a width of 200-300 mm. In order to prevent the substrate from falling off during the conveyance of the substrate, the rollers 91 are arranged very closely to each other. Although there is no risk of dropping the board, the clearance of the rollers 91 is too small, and the range of spraying the substrate 2 by the nozzle 92 is limited.

Referring to fig. 3a and 3b, a second conventional transmission mechanism for transferring a substrate is shown. The transmission mechanism 8 can also provide the narrow and wide substrates 2 to be placed on both sides for simultaneous operation, such as hard board products or soft board products with the width of 200-300 mm. The second transmission mechanism 8 removes part of the roller 81, and can be 5-10 times the pitch (pitch) of the first transmission mechanism. Although the range of the substrate 2 sprayed by the nozzle 82 is raised, there is a risk of dropping the substrate during the conveyance of the substrate, as shown in fig. 4.

Taiwan patent publication No. I351377 discloses a substrate conveying system, which includes a first conveying device, a second conveying device and a transferring device. The first transmission device comprises a plurality of first transmission units which are distributed at intervals, and the second transmission device comprises a plurality of second transmission units which are distributed at intervals. A first channel is formed between two adjacent first conveying units, and a second channel is formed between two adjacent second conveying units. The transfer device comprises a lifting device and a plurality of bearing pieces fixed on the lifting device. The lifting device is arranged in a relative sliding mode relative to the first channel and the second channel, so that the bearing piece can move along the first channel and the second channel. The substrate conveying system is convenient for converting the conveying direction of the substrate and high in conveying efficiency.

However, the above patent document does not address the problem of increasing the extent to which the substrate is sprayed without risking dropping the substrate.

Therefore, there is a need to provide a transmission mechanism for horizontally conveying substrates, which can solve the above-mentioned problems.

Disclosure of Invention

An object of the present invention is to provide a driving mechanism for horizontally conveying a substrate with a track for preventing the substrate from falling off, which can improve the spraying range of the substrate without the risk of the substrate falling off.

According to the above object, the present invention provides a transmission mechanism for horizontally conveying a substrate, comprising: a plurality of roller groups, arrange in proper order along this base plate advancing direction, every group roller group includes: a plurality of rollers for supporting, disposed in a central region of the roller group, for conveying the substrate; two rollers for guiding are arranged in the two side areas of the roller group and used for guiding the substrate when the substrate is conveyed; at least one central caterpillar drive wheel arranged between the rollers for supporting; the side track transmission wheel is arranged between the roller for supporting and the roller for guiding; the plurality of anti-falling plate tracks are connected between the central track transmission wheels of the two roller groups, and the central track transmission wheels drive the anti-falling plate tracks; and a plurality of transmission tracks connected between the side track transmission wheels of the two roller groups, so that the side track transmission wheels drive the transmission tracks.

In some embodiments, the diameter of the leveling roller is greater than the diameter of the support roller.

In some embodiments, the diameter of the central track drive wheel is less than the diameter of the support roller. The height of the anti-falling plate crawler belt is lower than that of the supporting roller.

In some embodiments, the drop guard track has a 2mm difference in height from the support rollers.

In some embodiments, the anti-falling plate track is made of acid and alkali resistant material.

In some embodiments, the acid-base resistant material is teflon (PTFE), teflon (FFD), teflon (PFA), or teflon (ETFE).

In some embodiments, the diameter of the side track drive wheels is less than or equal to the diameter of the central track drive wheel.

In some embodiments, the supporting rollers, the guiding rollers, the central track transmission wheel and the side track transmission wheels are made of materials resistant to foreign material adhesion.

In some embodiments, the foreign material repellent material is teflon (PFA).

In some embodiments, the plurality of fall arrest plate tracks are filamentary.

According to the transmission mechanism for horizontally conveying the substrate, the guide rollers can guide the substrate when conveying the substrate. When the plurality of anti-falling plate shoes are used for conveying the substrate, the substrate can be prevented from falling. Compared with the prior art, the distance between the rollers for supporting is larger, so that the spraying range of the substrate can be improved. The acid and alkali resistant material of the anti-falling plate crawler belt can prevent the anti-falling plate crawler belt from being damaged by residual medicament on the base plate when the plate falls. The roller for supporting, the roller for guiding, the central crawler belt driving wheel and the side crawler belt driving wheels are made of anti-foreign matter and anti-adhesion materials, so that adhesion during conveying of the substrate can be avoided.

Drawings

FIGS. 1a and 1b are schematic top and side views of a first known substrate transport mechanism, showing a substrate being transported;

FIG. 2 is a schematic cross-sectional view of a roller of a first known driving mechanism for conveying a substrate, showing the spraying range of the substrate;

FIGS. 3a and 3b are schematic top and side views of a second known substrate transport mechanism, showing a substrate being transported;

FIG. 4 is a schematic cross-sectional view of a roller of a second known driving mechanism for conveying a substrate, showing the spraying range of the substrate;

FIGS. 5a and 5b are schematic plan and perspective views of a driving mechanism for horizontally transferring a substrate according to an embodiment of the present invention;

FIGS. 6a and 6b are schematic top and side views of a horizontal substrate transport transmission mechanism according to an embodiment of the present invention, showing a substrate being transported;

FIG. 7 is a cross-sectional view of a roller for horizontally transporting a substrate according to an embodiment of the invention, showing the spraying range of the substrate.

Symbolic illustration in the drawings:

1, a transmission mechanism;

10 roller groups;

11 a roller for supporting;

12 a roller for guiding;

13 a central track drive wheel;

14 side track transmission wheels;

15 anti-falling plate crawler belts;

16 drive tracks;

17 a nozzle;

2 a substrate;

8, a transmission mechanism;

81 rollers;

82 a nozzle;

9, a transmission mechanism;

91 a roller;

92 a nozzle;

d, spacing;

d height difference.

Detailed Description

In order to make the aforementioned and other objects, features and characteristics of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Fig. 5a and 5b are schematic plan and perspective views of a transmission mechanism for horizontally conveying substrates according to an embodiment of the invention. The substrate may be a circuit board, a hard board, or a soft board. This transmission mechanism 1 includes: a plurality of roller groups 10, a plurality of anti-falling plate crawler belts 15 and a plurality of transmission crawler belts 16. The plurality of roller groups 10 are arranged in sequence along the substrate traveling direction. Each group of roller groups 10 comprises: a plurality of rollers 11 for supporting, two rollers 12 for guiding, at least one central crawler belt wheel 13 and at least one lateral crawler belt wheel 14.

Referring to fig. 5a and 5b, the supporting rollers 11 are disposed in a central region of the roller assembly 10 for conveying the substrate. The supporting rollers 11 are solid rollers. The diameter of the supporting roller 11 is, for example, about 30 mm. The two guiding rollers 12 are disposed at two side regions of the roller group for guiding the substrate when the substrate is conveyed. For example, the diameter of the guide roller 12 is about 45 mm. The central track drive 13 is disposed between the support rollers 11. For example, the diameter of the central track drive wheel 13 is about 28 to 30 mm. The side track transmission wheel 14 is arranged between the supporting roller 11 and the guiding roller 12. For example, the diameter of the side track drive wheels 14 is about 28 mm.

Referring to fig. 5a and 5b, the anti-dropping crawler belts 15 are connected between the central crawler driving wheels 13 of the two roller sets 10, so that the central crawler driving wheels 13 can drive the anti-dropping crawler belts 15. The falling prevention crawler 15 prevents the substrate from falling when the substrate is transferred. In the present embodiment, the plurality of fall arrest caterpillar bands 15 may be filament-shaped. For example, the length of the filamentary dropdown-proof track 15 may be about 250 mm. The anti-falling plate track 15 may be made of acid and alkali resistant material, for example, the following materials are used for the acid and alkali resistant material: teflon (PTFE) is polytetrafluoroethylene, Teflon (FFD) is fluorinated ethylene propylene copolymer, Teflon (PFA) is perfluoroalkyl compound, or Teflon (ETFE) is copolymer of ethylene and tetrafluoroethylene. Alternatively, the anti-fall plate track 15 may be coated with an acid-alkali resistant ceramic film (e.g., alumina) or an acid-alkali resistant metal film (e.g., titanium). The acid and alkali resistant material of the anti-falling plate crawler belt 15 can prevent the anti-falling plate crawler belt 15 from being damaged by residual medicament on the substrate when the plate falls. The plurality of driving tracks 16 are connected between the side track driving wheels 14 of the two roller sets 10, whereby the side track driving wheels 14 drive the driving tracks 16. The diameter of the central track drive wheel 13 is smaller than the diameter of the supporting roller 11.

Referring to fig. 6a, 6b and 7, the pitch (pitch) D of the supporting rollers 11 is 10 times that of the conventional transmission mechanism, so as to increase the spraying range of the substrate 2 by the nozzle 17. The diameter of the guiding roller 12 is larger than that of the supporting roller 11, so that the guiding roller 12 can guide the substrate 2 when the substrate 2 is conveyed. The diameter of the central track transmission wheel 13 is smaller than that of the supporting rollers 11, so that the height of the anti-dropping track 15 is lower than that of the supporting rollers 11, for example, the height difference d between the anti-dropping track 15 and the supporting rollers 11 is 2mm, thereby the anti-dropping track 15 does not prevent the supporting rollers 11 from conveying the substrate 2, but prevents the substrate 2 from dropping when the substrate 2 is conveyed. The diameter of the side track drive wheels 14 is less than or equal to the diameter of the central track drive wheel 13. The supporting roller 11, the guiding roller 12, the central track transmission wheel 13 and the side track transmission wheels 14 may be made of materials resistant to foreign material, such as teflon (PTFE), teflon (FFD) or teflon (PFA). Alternatively, the supporting rollers 11, the guiding rollers 12, the central track transmission wheel 13 and the side track transmission wheels 14 may be coated with an acid-base ceramic film (e.g., silica) resistant to foreign body contamination or a metal film (e.g., titanium) resistant to foreign body contamination. The supporting roller 11, the guiding roller 12, the central track transmission wheel 13 and the side track transmission wheels 14 are made of anti-foreign-body anti-adhesion materials so as to prevent adhesion during conveying the substrate 2.

In summary, the present invention is described only in the preferred embodiments or examples for solving the problems, and is not intended to limit the scope of the present invention. The scope of the invention is to be determined by the following claims and their equivalents.

Claims

1. A drive mechanism for horizontally conveying a substrate, comprising:

a plurality of roller groups, arrange in proper order along this base plate advancing direction, every group roller group includes:

a plurality of rollers for supporting, disposed in a central region of the roller group, for conveying the substrate;

two rollers for guiding are arranged in the two side areas of the roller group and used for guiding the substrate when the substrate is conveyed;

at least one central caterpillar drive wheel arranged between the rollers for supporting; and

at least one side track transmission wheel arranged between the roller for supporting and the roller for guiding;

the plurality of anti-falling plate tracks are connected between the central track transmission wheels of the two roller groups, and the central track transmission wheels drive the anti-falling plate tracks; and

and the plurality of transmission tracks are connected between the side track transmission wheels of the two roller groups, so that the side track transmission wheels drive the transmission tracks.

2. The apparatus of claim 1, wherein the diameter of the guiding roller is larger than the diameter of the supporting roller.

3. A drive mechanism for horizontally transporting a substrate as claimed in claim 1 wherein the diameter of the central track drive wheel is less than the diameter of the support roller.

4. The apparatus of claim 3, wherein the height of the plate falling prevention track is lower than the height of the supporting roller.

5. The apparatus of claim 4, wherein the height difference between the track and the roller is 2 mm.

6. The apparatus of claim 1, wherein the anti-falling crawler belt is made of acid-alkali resistant material.

7. The apparatus of claim 6, wherein the acid-base resistant material is polytetrafluoroethylene, fluorinated ethylene-propylene copolymer, perfluoroalkyl compound, or copolymer of ethylene and tetrafluoroethylene.

8. A drive mechanism for horizontally transporting substrates as claimed in claim 1 wherein the diameter of the side track drive wheels is less than or equal to the diameter of the central track drive wheel.

9. The apparatus of claim 1, wherein the rollers for supporting, the rollers for guiding, the central track transmission wheel and the side track transmission wheels are made of a material resistant to foreign material.

10. The apparatus of claim 9, wherein the anti-contamination material is teflon, fluorinated ethylene-propylene copolymer, or perfluoroalkylated material.

11. The apparatus of claim 1, wherein the plurality of anti-slide tracks are filamentary.