TWM574671U - Oven with air bearing - Google Patents

Abstract

The utility model relates to an oven with an air bearing, which comprises a box body, a conveying part and a heating part; the box body has an inner space and an opening, and the inner space is provided with a supporting plate adjacent to opposite sides of the opening respectively The feed portion is disposed on the support plate and comprises a plurality of air bearing, the air bearing is rotatably disposed on the support plate; a material to be processed passes through the feed port and the discharge port Abutting on each of the air bearing; the heating part is disposed in the inner space and uniformly heating the material belt; thereby achieving heating and conveying in the process of conveying the belt, because the supporting wheel of the air bearing is used as the material belt The conveying medium can convey the belt at a lower tension to reduce the tension deformation of the belt and the slip friction between the supporting wheels to prevent the belt to be processed from being damaged.

Description

Oven with air bearing

The present invention relates to a bearing, and more particularly to an air bearing supported by a fluid.

The existing Flexible Printed Circuit Board (FCC) is a Flip Chip Bonding on a flexible circuit board substrate when manufactured by Chip on Film (COF). The technology of placing the driver IC and its electronic components directly on the film (Film), the circuit and the surface of the circuit can be made on the hard substrate by the method of printing the etch resist as compared with the conventional printed circuit board. To achieve a lighter, thinner and shorter purpose. In the process of flip chip bonding technology, the glue is initially dried in an oven, but to ensure that the product can be completely dehumidified and the colloid hardens, long-term baking is required. 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 arranged inside the casing for heating and baking the soft circuit board to be conveyed, and the bearings used are all general ball bearings. The large frictional force easily causes the friction of the flexible circuit board due to the rotation of the bearing, thereby causing the surface of the flexible circuit board to be scratched and causing the coating to fall off.

Therefore, the prior art oven, which has the problems and disadvantages as described above in the overall construction of the flexible circuit board, needs to be improved.

In view of the shortcomings and deficiencies of the prior art, the present invention provides an oven having an air bearing, which can be heated and baked by the heating part and the air bearing in the oven, and the conveying part is conveyed. During the belt process, the friction between the belt and the air bearing is reduced.

In order to achieve the above new object, the technical means adopted by the present invention is to design an oven having an air bearing, which is used for heating a strip, and comprises: a box body having an inner space and communicating with the inner space An opening is disposed on a side of the box, and a support plate is disposed on the inner space of the opening, and a feed port and a discharge port are respectively adjacent to opposite sides of the opening, and The feed port and the discharge port are in communication with the inner space for the tape to enter and exit; a conveying portion is disposed on a side of the support plate facing the opening, and comprises: a plurality of air bearing bearings, Rotatablely disposed on the support plate, the tape is wound around each of the air bearing; a heating portion is disposed in the inner space and mounted on the support plate and adjacent to the moving path of the strip.

The utility model has the advantages that the air bearing is rotatably disposed on the support plate in the oven body, and the material belt is pressed against the air bearing, thereby designing the material belt to be in the process of conveying. The belt is input with low tension to reduce the tension deformation of the belt. In addition, the friction between the rotating and the air bearing can be reduced to prevent the surface of the belt from being scratched.

Further, in the oven having an air bearing, each of the air bearing comprises: a fixing base which is a hollow cylinder and is fixed on the supporting plate; and an intake shaft which is hollow a columnar body connected to the fixing base at one end, comprising: an air inlet extending from an end of the intake shaft along an axial direction of the intake shaft; at least one air passage passing through the air inlet An outer wall surface of the shaft and communicating with the air inlet; a gas guide inner ring, which is a hollow cylinder, the wall surface of which is a hollow structure and has a gas-filling space, and the outer surface of the wall surface has a plurality of first guides a venting hole, the inner surface of the wall surface is through at least one second air guiding hole, the air guiding inner ring is sleeved on the air intake shaft and each of the second air guiding holes corresponds to each of the air outlet channels; and a rotating outer ring is a a hollow cylinder, and is sleeved on the inner ring of the air guide; the two side stops, each of the side stops is a hollow annular piece, and the two side blocks are respectively sleeved on the intake shaft and located outside the rotation On both sides of the ring, the two side stops are respectively connected to the two sides of the inner ring of the air guide and There is a gap between the rotating outer rings; a positioning locking block, which is a hollow cylinder, and is sleeved on the other end of the intake shaft relative to the fixing seat; a supporting wheel, which is a hollow cylinder, and a sleeve The rotating outer ring is disposed on the two ends of the supporting wheel.

Further, the oven having the air bearing is arranged, wherein the plurality of air bearing are arranged at equal intervals in the horizontal direction of the upper and lower rows.

Further, the oven having an air bearing, wherein the heating portion comprises a plurality of heating rods disposed on the supporting plate and adjacent to the strip.

Further, the air bearing has an air bearing, wherein the air guiding inner ring further comprises an air guiding outer column, an air guiding inner column and two washers, wherein the air guiding outer column is a hollow cylinder, the first An air guiding hole penetrates the air guiding outer column, the air guiding inner column is a hollow cylinder, the second air guiding hole penetrates the air guiding inner column, and the two gaskets are fixed on the air guiding inner column and the air guiding outer column The air guide outer column is kept at a specific distance from the air guide inner column.

The technical means adopted by the present invention for achieving a predetermined new purpose are further explained below in conjunction with the drawings and the preferred embodiments of the present invention.

Referring to FIG. 1 and FIG. 2 , the oven with the air bearing of the present invention comprises a casing 10 , a conveying portion 20 and a heating portion 40 .

The box body 10 has an inner space and an opening 11 communicating with the inner space. The opening 11 is disposed on one side of the box body 10, and a support plate 12 is disposed opposite to the inner space of the opening 11, adjacent to opposite sides of the opening 11. There is a feed port 13 and a discharge port 14 respectively, and the feed port 13 and the discharge port 14 are connected to the inner space; in the embodiment, the inner space of the case 10 is provided with a support plate 12 for supporting The plate 12 divides the internal space into a front space and a rear space. The front space has a front opening 11 and the two sides adjacent to the opening 11 respectively have a feed opening 13 and a discharge opening 14 respectively. The space box 10 is provided with an opening toward the rear, and the feeding port and the discharging port on both sides are the same as the front space, but not limited thereto, the box 10 can also be assembled into a single side. In order to facilitate understanding of the following description, the structure in the space in front of the casing 10 will be described as an example.

The conveying portion 20 is disposed on a side of the support plate 12 facing the opening 11 and includes a plurality of air bearing 21, and the air bearing 21 is rotatably disposed on the support plate 12. A strip 30 passes through the inlet 13 and the outlet 14 and abuts against the outer surface of each of the air bearing 21 of the conveying portion 20. In the present embodiment, the strip 30 is an object to be heated, such as a flexible circuit board. And other materials.

Referring to FIG. 3 and FIG. 4, in the present embodiment, each of the plurality of air bearing 21 is arranged at an equal interval between the upper and lower rows, that is, one of the air bearing 21 of the upper row is positioned in the lower row in the longitudinal direction. Between adjacent two air bearing 21, and each air bearing 21 includes a fixing seat 211, an air intake shaft 212, an air guiding inner ring 213, a rotating outer ring 214, two side stops 215, and a positioning. The locking block 216, a supporting wheel 217 and two cover bodies 218, the fixing base 211 is a hollow cylinder and is fixed on the supporting plate 12. In the embodiment, each of the plurality of air bearing 21 is fixed to the fixed seat 211. The installation is disposed on the support plate 12.

As shown in FIG. 4 to FIG. 6 , the intake shaft 212 is a hollow cylindrical body, and one end is fixed to the fixed seat 211 . The intake shaft 212 includes an air inlet 2121 and at least one air passage 2122 . 2121 extends from one end of the intake shaft 212 along the axial direction of the intake shaft 212. In the present embodiment, the inlet end of the intake passage 2121, that is, the end of the intake shaft 212 connected to the fixed seat 211, the intake passage 2121 extends. Up to the middle of the intake shaft 212, but not limited thereto, the extension distance can be changed according to the user's needs; the air outlet 2122 is disposed on the outer wall surface of the intake shaft 212 and communicates with the air inlet 2121. In the present embodiment, the air outlets 2122 are four, and are distributed around the intake shaft 212 at an angle of a central angle, and are connected to the air inlet 2121, but not limited thereto, the number of air outlets 2122 can be determined according to user requirements. Make a change.

The air guide inner ring 213 is a hollow cylinder, the wall surface of which is hollow and has a space for air. 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 air guide outer column 2135 is a hollow cylinder, and the first air guiding hole 2131 is connected to the accommodating space, the air guiding inner column 2134 is a hollow cylinder, and the second air guiding hole 2132 is inserted through the air guiding inner column 2134. In communication with the accommodating space, the air guide inner column 2134 is sleeved and fixed to the air intake shaft 212, and each of the second air guide holes 2132 corresponds to each air outlet 2122, the air guide inner column 2134 does not rotate, and the air guide outer column 2135 is replaced by two washers. 2133 is disposed at both ends of the outer wall surface of the air guide inner column 2134, so that the air guide outer column 2135 is sleeved outside the air guide inner column 2134 and maintained at a specific distance, but not limited thereto, the air guide inner ring 213 may also be One-piece construction.

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

The side stop block 215 is a hollow annular piece body, and is disposed on the two sides of the rotating outer ring 214 of the intake shaft 212, and the two side stops 215 are respectively connected to the two sides of the inner air guide ring 213 and rotate outside. There is a gap between the rings 214. In other words, the length of the cylinder rotating the outer ring 214 is smaller than the length of the cylinder of the inner ring 213 of the air guide, so that the two ends of the outer ring 214 are not protruded from the inner ring 213 of the air guide. When floating, the side stops 215 do not rotate and maintain a certain distance from the rotating outer ring 214.

The positioning lock 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 block 216 is engaged with the intake shaft 212 and does not rotate. The air guide inner ring 213, the rotating outer ring 214 and the side block 215 are assembled on the intake shaft 212, but not limited thereto, the air guide inner ring 213, the outer ring 214 and the side block can be rotated. The 215 assembly is located on the intake shaft 212.

The supporting wheel 217 is a hollow cylinder, and the fixing sleeve is disposed on the rotating outer ring 214 to rotate synchronously. The material belt 30 abuts against the supporting wheel 217, and the cover body 218 is respectively disposed on both end faces of the supporting wheel 217, in this embodiment. The cover body 218 is locked to the support wheel 217 such that one side of the air bearing 21 is pushed by the positioning lock block 216, and the other side is pushed by the side of the cover 218 near the side of the fixed seat 211. The support wheel 217 is positioned on the intake shaft 212, but not limited thereto, and may be other fixed manners.

In addition, for further description of the gas flow path of the air bearing 21, the user inputs the gas into the air inlet 2121 through the end of the intake shaft 212, and flows into the second air guiding hole 2132 of the inner ring 213 through the air outlet 2122. The air space is further blown toward the rotating outer ring 214 through the air flow space toward the first air guiding hole 2131, and flows out through the gap between the cover body 218 and the intake shaft 212 via the gap between the side block 215 and the rotating outer ring 214. To the outside.

The heating unit 40 is disposed in the inner space of the casing 10 and can heat the material belt 30. In the embodiment, the heating unit 40 includes a plurality of heating rods 41 disposed on the support plate 12 adjacent to the material belt 30. For heating the strip 30, but not limited thereto, the heating unit 40 can be a hot fan or an infrared heating box, and only a device capable of achieving heating efficiency can be used.

Referring to FIG. 1 and FIG. 7, the application method of the oven of the air bearing of the present invention comprises the following steps:

a. The tape 30 is fed from the feeding port 13 of the conveying portion 20 and staggered up and down around each of the air bearing 21;

b. The air is further introduced into the intake passage 2121. of the intake shaft 212, so that the air enters the hollow wall surface of the air guide inner ring 213 through the plurality of second air guide holes 2132 via the at least one air outlet passage 2122, and from the plurality of first guides The air hole 2131 is blown to push 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 is rotated by the urging force of the material belt 30;

c. The heating unit 40 performs a heating operation on the material belt 30;

d. The tape 30 is output from the discharge port 14 of the conveying portion 20.

In the present embodiment, the conveying portion 20 inputs the strip 30 with a low tension, and the strip 30 enters the inner space from the feeding port 13 and is sequentially wound around the respective air bearing 21 in order, in detail, the aforementioned low The tension is compared with the prior art using the structure of the ball bearing, and the embodiment will be transmitted in the form of lower tension. In the prior art, when the belt 30 is in the process of transmission, a large friction is generated between the belt 30 and the ball bearing. The force causes the belt 30 to withstand a large tension and then pulls and breaks; and the present invention reduces the friction between the belt 30 and the support wheel 217 by using an air-floating bearing, thereby The tape 30 is conveyed in a low tension form to reduce the deformation, pulling and breaking of the tape 30 due to the tension; and after the tape 30 enters the internal space, it is placed against the lower half of the lower air bearing 21 and above. The upper half of the air bearing 21 is alternately wound until the strip 30 exits the discharge port 14.

In the foregoing process, since the air bearing 21 is used, the air is used as a medium to rotate in a nearly zero friction manner to prevent the surface of the tape 30 from sliding and scratching.

In the foregoing process, since the tape 30 is conveyed in a low tension manner, the tension deformation of the tape 30 can be reduced.

In the foregoing process, since the air bearing 21 is arranged in a staggered arrangement, the volume of the entire mechanism can be reduced, and the traveling path of the tape 30 can be increased to extend the heating time.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been disclosed above in the preferred embodiments, it is not intended to limit the present invention, and Generally, those skilled in the art can make some modifications or modifications as equivalent equivalents when using the technical content disclosed above, without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments of the present invention are still within the scope of the present invention.

10‧‧‧ cabinet

11‧‧‧ openings

12‧‧‧Support board

13‧‧‧ Feed inlet

14‧‧‧Outlet

20‧‧‧Transportation Department

21‧‧‧Air bearing

211‧‧‧ fixed seat

212‧‧‧Intake shaft

2121‧‧‧ Inlet

2122‧‧‧Airway

213‧‧‧ gas guiding inner ring

2131‧‧‧First air vent

2132‧‧‧Second air vent

2133‧‧‧Washers

2134‧‧‧Air guide column

2135‧‧‧Gas air column

214‧‧‧Rotating outer ring

215‧‧‧ side stop

216‧‧‧ positioning lock attachment block

217‧‧‧Support wheel

218‧‧‧ cover

30‧‧‧Material

40‧‧‧heating department

41‧‧‧heating rod

Figure 1 is a perspective view of the present invention. Figure 2 is a partial enlarged view of the present invention. Figure 3 is a perspective view of the air bearing of the present invention. Figure 4 is an exploded view of the air bearing of the present invention. Figure 5 is a radial sectional view of the air bearing of the present invention. Figure 6 is an axial sectional view of the air bearing of the present invention. Figure 7 is a schematic view of the operation of the novel air bearing.

Claims (5)

An oven having an air bearing for heating a strip, and comprising: a box having an inner space and an opening communicating with the inner space, the opening being disposed on a side of the box, and A support plate is disposed on the inner space of the opening, and a feed port and a discharge port are respectively adjacent to opposite sides of the opening, and the feed port and the discharge port communicate with the inner space. For conveying the tape in and out; a conveying portion disposed on a side of the supporting plate facing the opening, and comprising: a plurality of air bearing, rotatably disposed on the supporting plate, the tape is wound around Each of the air bearing; a heating portion disposed in the inner space and mounted to the support plate and adjacent to a moving path of the strip. An air-floating bearing oven according to claim 1, wherein each of the air bearing comprises: a fixing seat which is a hollow cylinder and is fixed on the supporting plate; and an intake shaft which is hollow a columnar body connected to the fixing base at one end, comprising: an air inlet extending from an end of the intake shaft along an axial direction of the intake shaft; at least one air passage passing through the air inlet An outer wall surface of the shaft and communicating with the air inlet; a gas guide inner ring, which is a hollow cylinder, the wall surface of which is a hollow structure and has a gas-filling space, and the outer surface of the wall surface has a plurality of first guides a venting hole, the inner surface of the wall surface is through at least one second air guiding hole, the air guiding inner ring is sleeved on the air intake shaft and each of the second air guiding holes corresponds to each of the air outlet channels; and a rotating outer ring is a a hollow cylinder, and is sleeved on the inner ring of the air guide; the two side stops, each of the side stops is a hollow annular piece, and the two side blocks are respectively sleeved on the intake shaft and located outside the rotation On both sides of the ring, the two side stops are respectively connected to the two sides of the inner ring of the air guide and a gap between the outer and outer rings; a positioning lock block, which is a hollow cylinder, and is sleeved on the other end of the intake shaft relative to the fixed seat; a support wheel, which is a hollow cylinder, and a sleeve The rotating outer ring is disposed on the two ends of the supporting wheel. An oven having an air bearing according to claim 1 or 2, wherein the plurality of air bearing are arranged at equal intervals in the horizontal direction of the upper and lower rows. An oven having an air bearing according to claim 3, wherein the heating portion comprises a plurality of heating rods disposed on the support plate adjacent to the strip. The air bearing inner ring according to claim 4, wherein the air guiding inner ring further comprises an air guiding outer column, an air guiding inner column and two washers, wherein the air guiding outer column is a hollow cylinder, the first An air guiding hole penetrates the air guiding outer column, the air guiding inner column is a hollow cylinder, the second air guiding hole penetrates the air guiding inner column, and the two gaskets are fixed on the air guiding inner column and the air guiding outer column The air guide outer column is kept at a specific distance from the air guide inner column.