TWI330057B - Printed circuit board conveyer structure of reflow oven and reflow oven using the same - Google Patents

Description

1330057 950062 22205twf.doc/e IX. Description of the Invention: [Technical Field] The present invention relates to a load-bearing transmission structure, and more particularly to a circuit board-bearing transmission structure of a reflow furnace. [Prior Art]

At present, the way to mount an electronic component on a printed circuit board (PCB) can be mainly divided into pin through hole (PTH) and surface mount technology (surface mount technology ' SMT) Two ways of joining. The pin insertion is performed by inserting a pin of an electronic component into a drilled printed circuit board, and then bonding the pin to the circuit board with a solder paste (s〇Mer paste) The electronic components of the dual inline package (ΜΡ) type are the most representative. The method of joining is to connect the end of the lead of the electronic component ((4)) directly to the pad on the surface of the printed circuit board without soldering the board.

In the process of implanting an electronic component into a printed circuit board, firstly, a solder paste is first applied to the pad which requires the upper component, and then the solder diode is printed on the printed circuit board, and finally the upper component is printed. The printing (four) Ϊί is fed into the reflow furnace through the braided transmission element (her w er), and the piece is fixed on the printed circuit board and melted, so that the electronic zero (four) circuit board is electrically connected with the Wei board. During the assembly process, the electronic strip-shaped transmission components located around the printed circuit board are moved, even g 1330057 950062 22205twf.d〇c/e to the ground. Fig. 1A is a schematic view showing that a printed circuit board is dropped by a handle. Please refer to 1A, the printed circuit board (the lost piece 52' and the contact area is the area where the strip-shaped transmission element (not, 1) is in contact with the printed circuit board 50. Originally in the area 5〇a = configured with - electronics The part 52, but is struck by the belt-like transmission element, causes the electronic component 52 on the contact area 50a to fall, leaving an empty fastener slot 54.

Figure 1B is a schematic illustration of the transfer of a printed circuit board to a conventional reflow oven. Please refer to FIG. 1B. In order to avoid the occurrence of the electronic component 52 colliding on the strip-shaped transmission component ιι 〇/, the P-brush board 5 如图 as shown in FIG. 1A, the electronic component is dropped. A partless area 60a is provided on the printed circuit board 6A. However, since the central portion of the printed circuit board 60 is not suitable for providing the parts-free area 6A due to the arrangement of the electronic components 62, the strip-shaped transmission member 110 can support the printed circuit board 6's only from both sides. Reflowed

In the middle, the central portion of the printed circuit board 60 is easily bent and deformed due to no support. [Invention] The object of the present invention is to provide a circuit board carrying transmission structure of a reflow furnace to solve the problem of reflowing when the circuit board is being transferred. Board deformation problem. Another object of the present invention is to provide a reflow furnace in which the circuit board carrying and transporting structure can solve the problem of the connection production when the circuit board is transported and the collision of the electronic components caused by the original operation of the transport circuit board. In order to achieve the above or other purposes, the present invention provides an electric reflow furnace 1330057 950062 222 〇 5 twf.doc / e = bearing, transmission structure, which is suitable for transmission - printed circuit board, and its characteristics are characterized by a transmission component 1 To carry and transport the printed circuit board, the transmission component (10) is provided with an auxiliary carrier element, and the component comprises a body, a plurality of supports and a plurality of positioning members. It is disposed on the body and protrudes from the body to withstand the printed circuit. These positioning members are provided with a body-lifting member having a - convex portion, wherein the convex portion serves to stop the printed circuit board. In the embodiment, the above body is a chain or a belt. - Body molding. 'Mingzhi-Cheng Shiyan towel, the above-mentioned body and these branch members are sprayed for eight months, and each of the above-mentioned support members is further s, σ. And the locking portion is locked to the body by a locking device. In the case of the - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - The support member of the upper returning-step package includes the convex portion and the locking portion as one body, and the positioning member is included in the locating member. In the embodiment, the above-mentioned each-support member is further step-packed. Most of the Ο 'is located in the lock, Gan Zhan η, 丨 ...... forming. In one embodiment of the invention, it is integrally formed. In the embodiment of the present invention, each of the above-mentioned one-piece pieces further includes an S-locking portion, and the lock gj portion is turned over to the body by a lock. In an embodiment of the invention, each of the positioning members is further provided with a - convex portion and the convex portion is locked to the locking portion by a locking member, and is printed at 950062 22205 twf.doc/e Circuit board. In an embodiment of the invention, each of the positioning members further includes a convex portion located on the locking portion, and the convex portion is integrally formed with the locking portion. In one embodiment of the invention, each of the positioning members has a height that is higher than each of the supports. In one embodiment of the invention, the distance between the positioning members is the length or width of the printed circuit board. To achieve the above or other objects, the present invention further provides a reflow furnace suitable for reflowing a printed circuit board and having a plurality of strip-shaped transmission elements for carrying and transporting the printed circuit board. The reflow furnace is characterized in that an inner side of the belt-like transmission member is provided with an auxiliary carrier member, and the auxiliary carrier member has a body, a plurality of supports and a plurality of positioning members. These supports are fitted to the body and protrude from the body to withstand the parts of the printed circuit board. Each of the clamping members is disposed on the body, and each of the positioning members has a convex portion, wherein the convex portion is used for stopping the printed circuit board. In an embodiment of the invention, the body is a chain or a belt. In an embodiment of the invention, the body is integrally formed with the supports. Person - In the embodiment of the present invention, each of the above-mentioned support members is further locked by a lock 5, and the lock portion is locked to the body by a lock. Person - in the embodiment of the present invention, the top-shaped each of the support further includes 3 two convex portions, and the convex portion is locked to the locking portion by the locking member to withstand the printed circuit board No parts. In the embodiment of the present invention, each of the support members further includes a protruding portion on the locking portion, wherein the protruding portion is integrally formed with the locking portion. 1330057 950062 22205twf.doc/e. In one embodiment of the invention, the body described above is integrally formed with the positioning members. In an embodiment of the invention, each of the positioning members further includes a locking portion, and the locking portion is locked to the body by a locking member. In one embodiment of the invention, each of the positioning members further includes a projection, and the projection is secured to the locking portion by a locking member to position the printed circuit board. In an embodiment of the invention, each of the positioning members further includes a convex portion located on the locking portion, and the convex portion is integrally formed with the locking portion. In one embodiment of the invention, each of the positioning members has a height that is higher than each of the supports. In one embodiment of the invention, the distance between the positioning members is the length or width of the printed circuit board. In one embodiment of the invention, the reflow oven described above has a transfer platform disposed in front of the strip drive members. In an embodiment of the invention, the transfer platform has a stop element for holding the printed circuit board, and the printed circuit board is released when the printed circuit board is spaced apart from the positioning member by a predetermined distance. The board is positioned to enable this printed circuit board to be slid short distances. The circuit board carrying transmission structure of the present invention can be configured with auxiliary supporting components to support the printed circuit board, which can prevent the printed circuit board from being thermally deformed and maintain the shape of the printed circuit board. Further, 9:S) 1330057 950062 22205twf.doc/e on the auxiliary carrier member of the present invention is a schematic view showing the configuration of the auxiliary carrier member, and is an enlarged view of the area A in Fig. 3A. Referring to Figures 3A and 3B, the auxiliary carrier 230 includes a body 232' plurality of supports 234 and a plurality of positioning members 236. The body 232 is, for example, a chain or a belt. The support member 234 is disposed on the body 232 and protrudes from the body 232 to be used to bear against the parts of the printed circuit board 70. In another embodiment, not shown, the body 2 can be integrally formed with the supports 234.

It should be noted that in the auxiliary bearing member 23A of the embodiment, the two positioning members 236_the distance is U, and the L1 can be in accordance with the different leaf-setting printing road plates. The positioning member 236 only needs to be Corresponding to the absence of parts of the printed circuit board 70. Further, the support member 234 includes a convex portion 234a and a locking portion 234b. The protruding portion 234a is locked to the locking portion 234b by the locking member 238, and the locking portion 234b is locked to the body 232 by the locking member 2; 38, wherein the mouthpieces 238, 238 can be screwed, card Hook, rivet (twist or buckle. This

The cut 234a may also be a snap fit, a snap fit, a riveted or other structural fit to be secured to the latch 234b. Similarly, the latch 234b = can be secured to the body 232 by snap fit, snap fit, riveting, or other configuration. (4) The convex portion 234a may be formed integrally with the locking portion 23, the locking portion 234b may be integrally formed with the body 232, or the convex portion 234a, and the locking portion 234b may be integrally formed with the body 232. The positioning member 236 is disposed on the body 232, and each of the positioning members moves the convex portion 236a and the -_ portion 236b. Wherein, the convex portion is taken to stop the printed circuit board 70, and the locking portion 236b is locked by the fastener: 11 (S.) 1330057 950062 222 〇 Stwf.doc/e body 232. The function of the locking portion 236b of the positioning member 236 and the locking portion 23 are the same, and therefore will not be described again. In addition, the convex portion 236a is integrally formed with the locking portion 236b, but in another embodiment, the convex portion 236a can be locked to the locking portion 236b by a locking member 238 to position the printed circuit board. 7〇. In addition, the height H1 of the positioning member 236 is greater than the height H2 of the support member 234, so that after the support member 234 is pressed against the printed circuit board 70, the positioning member 236 can also limit the printed circuit board 70. Please refer to FIG. 2 and FIG. 3A. The stop element 222 of 2 catches the first printed circuit board 70. When the positioning member 236 on the auxiliary carrier element 230 is spaced a predetermined distance from the stop element 222, the stop element 222 can be lowered, translated or otherwise suitable. The printed circuit board 70 is released to achieve a short distance sliding position between the printed circuit board 70 and the positioning member 236. The printed circuit board will first be contacted by the positioning member 236 for positioning, and then the support member 234 will sequentially withstand the no-part portion of the printed circuit board 70 as the body 232 of the auxiliary carrier member 230 is driven. Figure 4A is a schematic illustration of the printed circuit board of Figure 2 after it has been transferred to a ribbon drive member. After the stop element 222 is released from the printed circuit board 70 in FIG. 2, and then referring to FIG. 4A, the board length or board width L2 of the printed circuit board 70 is the same as the distance L1 between the two positioning members 236 in FIG. The circuit board 70 is adapted to be positioned between the two positioning members 236. It should be noted that the strip-shaped transmission component 210 supports both sides of the printed circuit board 70, and the auxiliary carrier component 230 is disposed on the inner side of the printed circuit board 7'' so as to support the central portion of the printed circuit board 70, so that the printing 12 s 1330057 950062 22205twf.doc/e The brush circuit board 70 is not easily deformed during the reflow process. In addition, the stop element 224 of FIG. 4A can capture the printed circuit board 70' of the second block and can control the stop element 224 to release the printed circuit of the second block by using a programmable logic controller (PLC). The time of the board 70 is such that after the first printed circuit board 7 is transported by the strip-shaped transmission component 210 and the auxiliary carrier component 230, a second

The printed circuit board 70 of the block is immediately transferred to the belt-like transmission member 21A and the auxiliary carrier member 230.

4B is an enlarged schematic view of a region B of FIG. 4A. Referring next to Fig. 4B, the positioning member 236 is caught by the printed circuit board 7A to prevent the printed circuit board 7 from being deflected or slipped during the reflow process of the transferred process. One of these supports 234 is located below the electronic component 72. Since the support member is the convex portion 234a supporting the printed circuit board 7〇, the protruding portion 23 can avoid the two pins 72a of the electronic component 72, so that the electronic component 72 does not touch the missing member 234a (four) Moved or dropped. In addition, although the coffee machine sub-part 72 is used as an example, it is a double-sided I^^, and the printing 1st board 7G can also be used. When the bottom surface of the printed circuit board has a part, V, the support member 234 holds the printed circuit board 70 without any occurrence. "When the electronic component 72 is skewed or dropped due to contact, the electronic component is placed under the printable circuit board 70 to retain the appropriate 'removal of J, the electric actuator 72, so that the ribbon transmission member 21〇

13 1330057 950062 22205twf.doc/e is able to maintain a distance from the electronic component 72. Although the present embodiment is disposed on the body 232 of the auxiliary carrier member 230 with the support member 234 and the positioning member 236, the holder 234 and the positioning member 236 may be configured with the belt-shaped transmission member 210 as is known to those skilled in the art. on. As a result, the printed circuit board 7 can be placed without the component-free area to increase the sheet area utilization rate. In summary, the present invention has at least the following advantages:

1. Multiple auxiliary carrier elements can be configured to support the printed circuit board according to requirements, and the printed circuit board can be prevented from being bent and deformed. Second, the support member on the belt-shaped transmission component can be elastically arranged, even if electronic components are disposed on both sides of the printed circuit board, the situation that the strip-shaped transmission component touches the electronic components of the four-in-one can be avoided, and the integrity of the printed circuit board is maintained. . Third, the printed circuit board to be reflowed does not need to be additionally equipped with no parts area, and the usable area of the printed circuit board can be effectively utilized. The invention has been disclosed above by way of example, but it is not intended to be limiting.

: This i:: in the field of surgery has the usual knowledge of 'not to take this too ^ spirit _ inside' when it can be used to make some changes, because the scope of protection is defined as the scope of the patent application [Simple description of the drawing] A schematic diagram of 1330057 950062 22205twf.doc/e, in which electronic components are dropped after the printed circuit board is collided. Fig. 3A is a schematic view showing the configuration of an auxiliary bearing member. Fig. 3B is an enlarged schematic view of the area A in Fig. 3A. Figure 4A is a schematic illustration of the printed circuit board of Figure 2 after it has been transferred to a ribbon drive member. 4B is an enlarged schematic view of a region B of FIG. 4A. [Main component symbol description] 50, 60: Printed circuit board ^ 50a: Contact area 52, 62: Electronic part 54: Part slot 60a. No part area 100: Reflow oven 110: Ribbon transmission element 70: Printed circuit board 72: electronic part #72a: pin 200: reflow oven 210: belt-shaped transmission element 220: transfer platform 222, 224: stop element 230: auxiliary carrier element 232: body 234: support

15 1330057 950062 22205twf.doc/e

234a: convex portion 234b: locking portion 236: positioning member 236a: convex portion 236b: locking portion 238, 238': locking member HI, H2: height L1: distance L2: plate length or plate width

Claims (1)

950062 22205twf.d〇c/, X. Patent application scope: 1. A circuit board carrying transmission structure of a reflow furnace, suitable for transmitting a printed circuit board, characterized in that: a plurality of belt-shaped transmission components for carrying and Transmitting the printed circuit board', wherein the inner side of the strip-shaped transmission elements is provided with an auxiliary carrier element, and the auxiliary carrier element comprises a body; the evening support member is disposed on the body and protrudes from the body to withstand The printed circuit board has no parts; and A plurality of positioning members are disposed on the body, and each of the positioning members has a convex portion, wherein the convex portion has a convex portion for stopping the printed circuit board. 2. The circuit board carrying structure of a reflow furnace as described in the scope of claim i is characterized in that the body is a chain or a belt. The circuit board bearing 1 structure of the reflow furnace according to claim 1, wherein the body and the support members are integrally formed. 4. The circuit board carrying structure of a reflow furnace according to the invention of claim 2, wherein each of the support members further comprises a locking portion, and the locking portion is provided by a locking member Locked on the body. The circuit board bearing 3 structure of the reflow furnace according to claim 4, wherein each support member further includes a protruding portion, and the tip is locked by a locking member. On the locking portion, to resist the no-part of the brush circuit board. The transmission structure has a characteristic electric load 1330057 950062 22205twf.doc/e located on the locking portion, wherein the convex portion is integrally formed with the locking portion. 7. If you apply for a patent scope! The circuit board carrying transmission structure of the reflow furnace described in the item is characterized in that the body and the positioning members are integrally formed. 8. If the circuit board carrying transmission structure of the reflow furnace described in the patent application is described, the ship is characterized in that each of the positioning members further comprises a locking portion, and the locking portion is locked by a locking device. On the body. 9. As stated in item 8 of the scope of application for patents The transmission structure is in that each of the locating members has a _ step package = the embossing portion is attached to the locking portion to position the printed circuit board. 10. The circuit board carrying transmission structure of the reflow furnace as recited in Item 8 of the claim, characterized in that each positioning member further comprises a convex portion located on the lock IU portion and the convex portion and the lock Solid part - body forming. 11. The circuit board load transmission structure of the reflow furnace as described in item i of the patent scope is characterized in that the height of each branch is higher than each of the buildings. 12. The circuit board load transmission structure of the reflow furnace described in item i of the material category is the length of the board or the board width of the printed circuit board. 13. A reflow furnace suitable for reflow-printed circuit board having a plurality of strip-shaped transmission elements for carrying and transporting the printed circuit board, the reflow furnace being characterized by: An auxiliary bearing member is disposed on the inner side of the driving member, and the auxiliary device is provided with a body; a plurality of supporting members are disposed on the body and protrude from the body to accommodate the printed circuit board And a plurality of positioning members disposed on the body, and each of the positioning members has a portion, wherein the protruding portion is used to stop the printed circuit board. 14. The reflow furnace of claim 5, wherein the body is a chain or a belt. The reflow furnace of claim 13, wherein the body is integrally formed with the support members. The reflow furnace of claim 13, wherein each of the support members further comprises a latching portion, and the latching portion is secured to the body by means of a firmware. 17. The reflow furnace of claim 16, wherein each support member further comprises a protruding portion, and the protruding portion is locked to the locking portion by a locking member. The reflow furnace of claim 16 is characterized in that each support member further comprises a convex portion on the locking portion, wherein The protruding portion and the locking portion are integrally formed. 19. The reflow furnace of claim 13, wherein the body is integrally formed with the positioning members. The reflow oven of claim 2, wherein each of the positioning members further comprises a locking portion, and the locking portion is locked to the body by a locking member. 19 950062 22205twf.doc/e 22. The reflow furnace of claim 2, wherein each of the positioning members further comprises a convex portion located on the locking portion, the H convex portion and the The locking portion is integrally formed. And child 23. The reflow furnace described in claim 13 of the patent scope is characterized in that The height of each positioning member is higher than each support member. J. 24. The reflow furnace of claim 13, wherein the distance between the positioning members is a plate length or a plate width of the printed circuit board. The reflow furnace of claim 13, wherein the reflow furnace has a transfer platform disposed in front of the strip-shaped transmission elements. The reflow furnace described in each of the implants, supplementing the 2G item, is characterized by being locked to the lock to position the printed circuit board. A reflow oven according to claim 25, wherein the transfer platform has a stop member for holding the printed circuit board, and when the printed circuit board is When one of the positioning members is spaced apart by a predetermined distance, the printed circuit board is released to achieve a short-distance sliding positioning of the printed circuit board. 20 (S