TWI689695B - Oven with air bearing and its application method - Google Patents

Abstract

The invention is an oven with air bearing and its application method, which includes a box body, a conveying part and a heating part; the box body has an internal space and an opening, the internal space is provided with a supporting plate, which is adjacent to the opening A feed port and a feed port are respectively penetrated on the opposite sides; the conveying part is provided on the support plate and includes a plurality of air float bearings, and the air float bearings are rotatably provided on the support plate; a material belt to be processed penetrates the feed port And the discharge port is close to each air bearing; the heating part is located in the internal space and uniformly heats the material belt; thereby achieving the heating and conveying part in the process of conveying the material belt, because the air bearing is used to support the wheel As the conveying medium of the material belt, the material belt can be conveyed with lower tension to reduce the tension deformation of the material belt and the sliding friction between the support wheels to avoid the material belt from being damaged.

Description

Oven with air bearing and its application method

The invention relates to a bearing, in particular to an air bearing supported by fluid.

The existing flexible printed circuit board (FPC) is produced by chip on film (COF), which is a kind of Flip Chip Bonding on the flexible circuit board substrate Technology, the driver IC and its electronic parts are placed directly on the film (Film). Compared with the traditional printed circuit board, the method of printing etching resist is used to make the circuit lines and drawings on the hard substrate, which can further To achieve the purpose of more light and thin. In the process of flip chip bonding technology, the glue will be initially dried in an oven after coating, but to ensure that the product can be completely dehumidified and harden the colloid, it requires long-term baking. At this stage, special baking is used. The oven of the flexible circuit board, and set the baking time and temperature to bake.

However, in the prior art oven, a plurality of bearings are provided inside the box body for heating and baking the conveyed flexible circuit board. The bearings used are all general ball bearings. The large friction force may easily cause the friction of the flexible circuit board due to the rotation and transportation of the bearing, which may scratch the surface of the flexible circuit board and cause the coating to fall off.

Therefore, the entire oven of the prior art has the above-mentioned problems and shortcomings in the structure of conveying the flexible circuit board, which needs to be improved.

In view of the shortcomings and deficiencies of the prior art, the present invention provides an oven with an air bearing and its application method, which can achieve heating, baking and transportation of the material belt by the heating part and the air bearing provided in the oven In the process of conveying the material belt, the purpose of reducing friction between the material belt and the air bearing is reduced.

In order to achieve the above purpose of the invention, the technical means adopted by the present invention is to design an oven with air bearing, which is used to heat a material belt, and includes: a box body having an internal space and communicating with the internal space An opening provided on a side of the box, and the inner space relative to the opening is provided with a support plate, and a feed port and a feed port are respectively penetrated on opposite sides adjacent to the opening, and The feeding port and the discharging port communicate with the internal space for feeding and discharging of the material belt; a conveying part is provided on a side of the supporting plate facing the opening, and includes: a plurality of air bearing, which The plurality of air bearings are rotatably arranged on the support plate. The plurality of air bearings are arranged in two horizontal rows at equal intervals across each other, and the strip is wound around each air bearing. Each air bearing includes: a fixed seat, It is a hollow cylinder and is fixed on the support plate; an intake shaft, which is a hollow cylindrical body, and one end is connected to the fixing seat, including: an intake passage, which is from the intake shaft One end extends in the direction of the axis of the intake shaft; at least one air outlet, which is penetrated on the outer wall surface of the air inlet shaft and communicates with the air inlet; an air guide inner ring, which is a hollow cylinder, The wall surface is a hollow structure and has a gas-holding space, and the outer surface of the wall surface is penetrated by a plurality of first air guide holes, the inner surface of the wall surface is penetrated by at least one second air guide hole, and the air guide inner ring is sleeved on the inlet An air shaft and each second air guide hole corresponds to each air outlet; A rotating outer ring, which is a hollow cylinder, and sleeved on the gas guide inner ring; two side stoppers, each of the side stoppers is a hollow annular piece, and the two side stoppers are sleeved on the The intake shaft is located on both sides of the rotating outer ring. The two stoppers are respectively connected to the two sides of the air guiding inner ring and have a gap with the rotating outer ring; a positioning lock attachment block, which is a hollow cylinder And sleeved on the other end of the intake shaft relative to the fixed seat; a support wheel, which is a hollow cylinder, and sleeved on the rotating outer ring; two cover bodies, which are respectively covered on the support wheel The two end surfaces of the; a heating portion, which is provided in the internal space and installed on the support plate, and is adjacent to the moving path of the material belt.

In order to achieve the above-mentioned object of the invention, the present invention further provides an application method of an oven with an air bearing, the operation steps are:

a. Input the material belt from the inlet of the conveying part and wind it around each air bearing

b. Introduce air into the intake channel of the intake shaft, so that the air passes through the plurality of second air guide holes through at least one air outlet into the hollow wall surface of the air guide inner ring, and blow out from the plurality of first air guide holes to rotate outside The ring floats and rotates by the force of the material belt

c. The heating part heats the material belt

d. The material belt is output from the outlet of the conveying part

The advantage of the present invention is that, by arranging the air bearing rotatably on the support plate in the oven box, and then attaching the material belt to each air bearing, the design can achieve that the material belt can be transported in the process. Entering the material belt with low tension reduces the tension deformation of the material belt. In addition, it can also reduce friction with the air bearing during rotation to prevent the surface of the material belt from being scratched.

Further, in the oven with an air bearing, the heating part includes a plurality of heating rods, the plurality of heating rods are disposed on the support plate and adjacent to the material belt.

Further, in the oven with air bearing, the inner air guide ring further includes an outer air guide column, an inner air guide column and two gaskets, the outer air guide column is a hollow cylinder, the first An air guide hole penetrates the air guide outer column, the air guide inner column is a hollow cylinder, the second air guide hole penetrates the air guide inner column, and the two gaskets are fixed between the air guide inner column and the air guide outer column The external air-conducting column and the internal air-conducting column maintain a specific distance.

Further, in the application method of the oven with an air bearing, the material tape is wound around the air bearing sequentially from top to bottom after entering the internal space from the feed port.

Further, in the application method of the oven with air bearing, the conveying part conveys the material belt with low tension.

10: cabinet

11: opening

12: Support plate

13: Feed port

14: Outlet

20: Transportation Department

21: air bearing

211: Fixed seat

212: intake shaft

2121: Intake port

2122: Outlet

213: Air-conducting inner ring

2131: First air hole

2132: Second air hole

2133: washer

2134: Inner gas guide column

2135: Outer gas guide column

214: Turn the outer ring

215: Side stop

216: Positioning lock attachment block

217: Support wheel

218: Cover

30: Strip

40: Heating section

41: Heating rod

FIG. 1 is a perspective external view of the present invention.

Fig. 2 is a partially enlarged view of the present invention.

3 is a perspective external view of the air bearing of the present invention.

4 is an exploded view of the air bearing of the present invention.

5 is a radial cross-sectional view of the air bearing of the present invention.

6 is an axial cross-sectional view of the air bearing of the present invention.

7 is a schematic view of the action of the air bearing of the present invention.

In the following, with reference to the drawings and preferred embodiments of the present invention, the technical means adopted by the present invention to achieve the intended purpose of the invention will be further described.

Please refer to FIG. 1 and FIG. 2, the oven with air bearing of the present invention includes a box body 10, a conveying part 20 and a heating part 40.

The cabinet 10 has an internal space and an opening 11 communicating with the internal space. The opening 11 is provided on one side of the cabinet 10, and the internal space relative to the opening 11 is provided with a support plate 12 adjacent to the opposite sides of the opening 11 A feed port 13 and a feed port 14 are respectively penetrated, and the feed port 13 and the feed port 14 communicate with the internal space; in this embodiment, a support plate 12 is provided in the internal space of the box 10 to support The plate 12 divides the internal space into a front space and a rear space. The front space has an opening 11 facing forward, and two sides adjacent to the opening 11 penetrate through a feed port 13 and a discharge port 14, respectively, and the rear The box 10 of the space is provided with openings towards the rear and the inlets and outlets on both sides. The structure is the same as the space in the front, but not limited to this, the box 10 can also be assembled for single use In order to facilitate understanding of the following description, the structure in the space in front of the box 10 is taken as an example for illustration.

The aforementioned conveying portion 20 is provided on a side of the support plate 12 facing the opening 11, and includes a plurality of air bearing 21. The air bearing 21 is rotatably provided on the support plate 12. A material belt 30 penetrates the inlet 13 and the material outlet 14 and is in contact with the outer surface of each air bearing 21 of the conveying section 20. In this embodiment, the material belt 30 is an object to be heated, such as a flexible circuit board Wait for parts.

Please refer to FIG. 3 and FIG. 4. In this embodiment, each of the plural air bearing 21 is arranged horizontally and equidistantly in the upper and lower rows, that is, one of the air bearings 21 in the upper row is located in the lower row in the longitudinal position Between two adjacent air bearing 21, and each air bearing 21 includes a fixed seat 211, an intake shaft 212, an air guide inner ring 213, a rotating outer ring 214, two side stoppers 215, a positioning The locking block 216, a supporting wheel 217 and two covers 218, the fixing base 211 is a hollow cylinder, and is fixed on the supporting plate 12, in this embodiment, each of the plural air bearing 21 is fixed by the base 211 It is installed on the support plate 12.

Please refer to FIG. 4 to FIG. 7, the intake shaft 212 is a hollow cylindrical body, and one end is fixed on the fixed seat 211, the intake shaft 212 includes an intake passage 2121 and at least one outlet passage 2122, the intake passage 2121 extends from one end of the intake shaft 212 along the axis direction of the intake shaft 212. In this embodiment, the intake passage 2121 The inlet end of the intake shaft 212 is connected to the fixed seat 211, the intake passage 2121 extends to about the middle of the intake shaft 212, but not limited to this, the extension distance can be changed according to user needs; The air passage 2122 is penetrated on the outer wall surface of the intake shaft 212 and communicates with the intake passage 2121. In this embodiment, there are four air outlet passages 2122, which are distributed around the intake shaft 212 at a constant center angle and are The channels 2121 are connected, but not limited to this, and the number of outlet channels 2122 can be changed according to user needs.

The air guide inner ring 213 is a hollow cylinder with a hollow structure on the wall surface and a gas containing space. In this embodiment, the air guide inner ring 213 is composed of an air guide inner column 2134, an air guide outer column 2135 and two The washer 2133 is composed of a gas-conducting outer column 2135 which is a hollow cylinder, and a first gas-guiding hole 2131 penetrating therethrough to communicate with the accommodating space, a gas-conducting inner column 2134 a hollow cylinder, and a penetrating second gas-guiding hole 2132 Communicating with the accommodating space, the air guide inner column 2134 is sleeved and fixed to the intake shaft 212 and each second air guide hole 2132 corresponds to each air outlet 2122, the air guide inner column 2134 does not rotate, and the air guide outer column 2135 is passed through two washers 2133 is disposed at both ends of the outer wall surface of the inner air guide column 2134, so that the outer air guide column 2135 is sleeved outside the inner air guide column 2134 and maintains a certain distance, but not limited to this, the inner air guide ring 213 can also be One-piece construction.

The rotating outer ring 214 is a hollow cylinder, and can be rotatably sleeved on the gas guiding inner ring 213 relative to the gas guiding inner ring 213. In this embodiment, the inner diameter of the rotating outer ring 214 is larger than that of the gas guiding inner ring 213 The outer diameter allows the rotating outer ring 214 to rotate coaxially with respect to the gas guiding inner ring 213, and the distance between the rotating outer ring 214 and the gas guiding inner ring 213 can be adjusted appropriately according to the pressure of the gas injected by the user. To achieve the purpose of having air floatation effect.

The side stopper 215 is a hollow ring-shaped piece, and is sleeved on the intake shaft 212 located on both sides of the rotating outer ring 214. The two stoppers 215 are respectively connected to the two sides of the air guiding inner ring 213 and are There is a gap between the rings 214, in other words, the length of the cylinder of the rotating outer ring 214 is shorter than the length of the cylinder of the gas guiding inner ring 213, so that both ends of the rotating outer ring 214 will not protrude from the gas guiding inner ring 213. When floating, the stoppers 215 on both sides do not rotate and maintain a certain distance from the rotating outer ring 214.

The positioning lock attachment block 216 is a hollow cylinder, and is sleeved on the other end of the intake shaft 212 relative to the fixed seat 211. In this embodiment, the positioning lock attachment block 216 is engaged with the intake shaft 212 and does not rotate. It is used to assemble the air guide inner ring 213, the rotating outer ring 214 and the side stop 215 on the intake shaft 212, but not limited to this, other can make the air guide inner ring 213, the rotating outer ring 214 and the side stop 215 can assemble components located on the intake shaft 212.

The support wheel 217 is a hollow cylinder, which is fixedly sleeved on the rotating outer ring 214 and rotates synchronously with it. The material belt 30 abuts on the support wheel 217, and the cover body 218 covers the two end surfaces of the support wheel 217 respectively. In this embodiment In the middle, the cover 218 is locked to the support wheel 217, so that one side of the air bearing 21 is pushed against by the positioning lock attachment block 216, and the other side is pushed by the side of the cover 218 close to the side of the fixed seat 211 The support wheel 217 is positioned on the intake shaft 212 against the fixing seat 211, but it is not limited to this, and other fixing methods are also possible.

In addition, for further description of the gas flow path of the air bearing 21, the user enters the gas through the inlet shaft 212 end into the inlet channel 2121, flows through the outlet channel 2122 to the second air guide hole 2132 of the inner air ring 213 to enter the volume The air space flows through the air containing space to the first air guide hole 2131 and blows toward the rotating outer ring 214, flows out through the gap between the cover 218 and the intake shaft 212 through the gap between the side stopper 215 and the rotating outer ring 214 To the outside.

The heating part 40 is provided in the inner space of the box body 10 and can heat the tape 30. In this embodiment, the heating part 40 includes a plurality of heating rods 41. The heating rods 41 are disposed on the support plate 12 and adjacent to the tape 30 It is used to heat the material belt 30, but it is not limited to this. The heating part 40 can be a hot fan or an infrared heating box, as long as the device can achieve the heating effect.

Please refer to FIG. 1 and FIG. 7, the application method of the air bearing bearing oven of the present invention includes the following steps: a. The material belt 30 is input from the feeding port 13 of the conveying part 20 and wound up and down alternately in each Air bearing 21; b. Then introduce air into the intake passage 2121 of the intake shaft 212, so that the air passes through at least one outlet passage 2122 through the plurality of second air guide holes 2132 into the hollow wall surface of the air guide inner ring 213, and from the plurality of first guide The air hole 2131 blows out and pushes against the rotating outer ring 214, so that a gap is formed between the air guiding inner ring 213 and the rotating outer ring 214, and rotates by the force of the tape 30; c. The heating section 40 heats the tape 30 Action; d. The material belt 30 is output from the discharge port 14 of the conveying part 20.

In this embodiment, the conveying section 20 feeds the material belt 30 with low tension, and the material belt 30 enters the inner space from the inlet 13 and is wound around the air bearing 21 in sequence up and down. In detail, the aforementioned low Tension means that compared with the structure of the prior art using ball bearings, this embodiment will be transmitted in the form of lower tension. In the prior art, when the material belt 30 is in the process of transmission, there is greater friction between the material belt 30 and the ball bearing Force, which causes the material belt 30 to bear a large tension and then pull and break; and because the present invention uses an air bearing, it can reduce the friction between the material belt 30 and the support wheel 217, thereby making The material belt 30 is transmitted in the form of low tension to reduce the deformation, pulling and breaking of the material belt 30 due to tension; and after the material belt 30 enters the internal space, it is placed against the lower half of the air bearing 21 below and above The upper half of the air bearing 21 is alternately wound until the material belt 30 leaves the outlet 14.

In the foregoing process, since the air bearing 21 is used, the air is used as the medium to rotate with almost zero friction to prevent the surface of the material belt 30 from sliding and scratching.

In the foregoing process, since the material belt 30 is transmitted in a low-tension manner, the occurrence of tension deformation of the material belt 30 can be reduced.

In the foregoing process, since the air bearing 21 is arranged in a staggered arrangement, the volume of the overall mechanism can be reduced, and the travel path of the material belt 30 can also be increased to extend the heating time.

The above is only the preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as the above with the preferred embodiment, it is not intended to limit the present invention. It is clear that any person with ordinary knowledge in the technical field of the art, without departing from the scope of the technical solution of the present invention, can make some alterations or modifications as equivalents of equivalent changes by using the technical contents disclosed above, but those who have not departed The contents of the technical solution of the present invention, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

10: cabinet

11: opening

12: Support plate

13: Feed port

14: Outlet

20: Transportation Department

21: air bearing

30: Strip

40: Heating section

41: Heating rod

Claims (6)

An oven with an air bearing is used for heating a material belt, and includes: a box body having an internal space and an opening communicating with the internal space, the opening being provided on a side surface of the box body, and The inner space relative to the opening is provided with a supporting plate, and opposite sides adjacent to the opening respectively penetrate a feeding port and a discharging port, and the feeding port and the discharging port communicate with the internal space, It is used for the material to enter and exit; a conveying part, which is disposed on a side of the support plate facing the opening, and includes: a plurality of air bearing, which is rotatably provided on the support plate, the plurality of air bearings are The upper and lower rows are horizontally arranged at equal intervals, and the material belt is wound around each of the air bearing, wherein each air bearing includes: a fixed seat, which is a hollow cylinder and fixed on the support plate; The intake shaft, which is a hollow cylindrical body, and one end is connected to the fixed seat, includes: an intake passage extending from one end of the intake shaft along the axis direction of the intake shaft; at least one outlet passage , Which penetrates the outer wall surface of the intake shaft and communicates with the intake passage; an air guide inner ring, which is a hollow cylinder, whose wall surface is a hollow structure and has a gas-holding space, and the wall surface A plurality of first air guide holes are penetrated through the outer surface, and at least one second air guide hole is penetrated through the inner surface of the wall surface, the air guide inner ring is sleeved on the intake shaft and each second air guide hole corresponds to each air outlet; A rotating outer ring, which is a hollow cylinder, and sleeved on the air guide inner ring; two side stoppers, each of the side stoppers is a hollow ring-shaped piece, and the two side stoppers are respectively sleeved on the The intake shaft is located on both sides of the rotating outer ring, and the stoppers on both sides are respectively connected to the two sides of the air guiding inner ring and have a gap with the rotating outer ring; A positioning lock attachment block, which is a hollow cylinder, sleeved on the other end of the intake shaft relative to the fixed seat; a support wheel, which is a hollow cylinder, sleeved on the rotating outer ring; Two cover bodies are respectively arranged on both end surfaces of the supporting wheel; a heating part is arranged in the internal space and is installed on the supporting plate, and is adjacent to the moving path of the material belt. The oven with an air bearing as recited in claim 1, wherein the heating portion includes a plurality of heating rods, the plurality of heating rods being disposed on the support plate and adjacent to the material belt. The oven with an air bearing as described in claim 1 or 2, wherein the air guide inner ring further includes an air guide outer column, an air guide inner column and two gaskets, the air guide outer column is a hollow cylinder, The first air guide hole penetrates the air guide outer column, the air guide inner column is a hollow cylinder, the second air guide hole penetrates the air guide inner column, and the two gaskets are fixed on the air guide inner column and the air guide outer Between the columns, the gas-conducting outer column and the gas-conducting inner column maintain a specific distance. An application method of an oven with an air bearing, which is applied to the oven with an air bearing of any one of claims 1 to 3, and its operation steps are as follows: a. Input the material belt from the feeding port of the conveying part And around the air bearing; b. Then introduce air into the intake channel of the intake shaft, so that the air passes through the plurality of second air guide holes through at least one air outlet into the hollow wall surface of the air guide inner ring, and Blow out from the plurality of first air holes to suspend the rotating outer ring and rotate by the force of the material belt; c. The heating part heats the material belt; d. The material belt is output from the outlet of the conveying part. The application method of an oven with an air bearing as described in claim 4, wherein the material tape is wound around each air bearing in sequence from the feed inlet to the internal space. The application method of an oven with an air bearing as described in claim 5, wherein the conveying section conveys the material belt with low tension.

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