Device for conveying panel products to pass through reflow oven

Abstract

The utility model discloses a device for conveying a panel product to pass through a reflow oven, and the device comprises a carrying platform which comprises an upper surface used for containing the panel product and a downward pressing part used for providing downward pressing force for the contained panel product; and the movable trolley is used for bearing the carrying table to move in the reflow oven at a variable speed. According to the technical scheme, at least warping of the panel during reflow soldering can be restrained, and the problem that impact and fragment are easily caused by shaking of the panel is solved.

Description

Technical Field

[0001] The present application relates to an apparatus for conveying panel products through a reflow oven. Background Art

[0002] In the prior art, reference Figure 1 As shown, the reflow process for the panel 10 is to heat the panel 10 by moving the panel 10 with the conveyor belt 20. When a small die (e.g., 2 mm or less) is attached to a large panel 10 (e.g., a 600 mm×600 mm panel, hereinafter referred to as a 600 mm panel), the warpage generated will be greater than that of a larger die, especially after passing through a reflow furnace (e.g., Figure 1 As shown). And because the warping is as Figure 1 When the smiley face is shown, the panel 10 will shake on the conveyor belt 20 of the reflow furnace, and there will be a risk of collision and fragmentation in the lower height area of ​​the reflow furnace 30 (such as the exit 32). Large warping will also cause the risk of panel fragmentation during the robot gripping and conveying process after the reflow process is completed. Because the conveying speed of the single conveyor belt 20 in each temperature section of the reflow furnace 30 is fixed, it is not easy to control the ball height of large panels.

[0003] The packaging industry does not yet have a technology suitable for reflow of large panels. Utility Model Content

[0004] In view of the above problems, the present application proposes a device for transporting panel products through a reflow furnace, which can at least suppress the warping of the panel during the reflow period and solve the problem of impact and fragmentation caused by panel shaking.

[0005] According to one aspect of the present application, there is provided a device for transporting panel products through a reflow furnace, the device comprising a carrier and a movable trolley, the carrier comprising an upper surface for accommodating the panel product and a downward pressure member for providing downward pressure to the accommodated panel product; the movable trolley is used to carry the carrier and perform variable speed movement in the reflow furnace.

[0006] In some embodiments, a magnet is embedded in the movable trolley so that the movable trolley cooperates with the magnetic structure in the reflow furnace, so that the movable trolley does not contact the reflow furnace when moving in the reflow furnace.

[0007] In some embodiments, the magnets are enclosed within the mobile trolley and are not exposed to the outside.

[0008] In some embodiments, the carrier is detachably mounted on a mobile trolley.

[0009] In some embodiments, after the carrier and the moving trolley are combined, a cavity is formed at the joint surface of the carrier and the moving trolley, and after the cavity is evacuated, the carrier is stably placed on the moving trolley.

[0010] In some embodiments, the cavity does not overlap with the edge of the moving cart and the edge of the carrier in the vertical direction.

[0011] In some embodiments, the hold-down member is disposed at an edge of the carrier.

[0012] In some embodiments, the device for transporting the panel product through the reflow furnace further includes: a trolley track, which is located in the reflow furnace and is used to define the moving track of the moving trolley.

[0013] In some embodiments, the trolley track has a U-shape in a top view.

[0014] In some embodiments, the reflow oven has a product exit, through which the panel products unloaded from the moving trolley are moved out of the reflow oven, and the product exit is located at a middle section of the moving track of the moving trolley in the reflow oven.

[0015] In the above technical solution, by setting a pressing piece to press down and fix the panel, the panel (especially large panel) can be prevented from warping when heated in the reflow furnace, avoiding panel shaking due to warping, thereby solving the problem of collision and fragmentation caused by panel shaking. By controlling the mobile trolley to carry the panel to move at a variable speed in the reflow furnace, the panel can absorb heat evenly in the reflow furnace, which is conducive to improving the high uniformity of the input and output ends, and improving the product yield and output; it can also avoid the collision between the reflowed panel and the panel in the subsequent process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the prior art of using a conveyor belt to drive the panel for reflow welding.

[0018] Figure 2A and Figure 2B 4 is a cross-sectional schematic diagram of an apparatus for conveying a panel product through a reflow furnace according to an embodiment of the present application.

[0019] Figure 3 is a schematic top view of a reflow furnace according to an embodiment of the present application.

[0020] Figure 4 It is a schematic top view of the trolley track of the mobile trolley according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0022] The following disclosure provides many different embodiments or examples for realizing different features of the provided subject matter. Specific examples of components and arrangements will be described below to simplify the present invention. Of course, these are merely examples and are not intended to limit the present invention. For example, in the following description, forming a first component above or on a second component may include an embodiment in which the first component and the second component are in direct contact, and may also include an embodiment in which an additional component is formed between the first component and the second component so that the first component and the second component may not be in direct contact. Moreover, the present invention may repeatedly refer to numbers and / or letters in various examples. This repetition is only for simplicity and clarity, and does not itself represent the relationship between the various embodiments and / or configurations discussed.

[0023] In addition, the embodiments and features in the embodiments of the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] The embodiment of the present application provides a device for transporting panel products through a reflow furnace, referring to Figure 2A and Figure 2B As shown, the device 100 for transporting a panel product through a reflow furnace provided by the present application may include a carrier 120, and a mobile trolley 140 for carrying the carrier 120. The carrier 120 has an upper surface 120u for accommodating a panel product 150 (hereinafter referred to as the panel 150), and a pressing member 160 for providing a downward pressure on the panel 150. In some embodiments, the downward pressure provided by the pressing member 160 can press the edge of the panel 150 toward the carrier 120.

[0025] The above-mentioned device 100 of the present application, by setting a pressing member 160 to press down the panel 150, can suppress the warping of the panel 150 (especially large panels) during reflow heating (for example, suppressing smiley face-shaped warping), avoid panel shaking due to warping, and thus solve the problem of panel shaking easily causing impact and fragmentation.

[0026] The upper surface 150u of the panel 150 may have an input / output terminal 154, which may be, for example, a solder ball. The height of the input / output terminal 154 (such as a solder ball) is a product specification that needs to be controlled. In some embodiments, the mobile trolley 140 may carry the carrier 120 to move at a variable speed in the reflow furnace, so that after reflow, the height uniformity of the input / output terminal 154 may meet the expected specifications.

[0027] Specifically, in the traditional method, the panel is fixed in the reflow furnace for reflow, and a metal mesh belt is usually used to carry 12" (inch) and 8" wafers. Considering that the 600mm panel is a large-size wafer, and the metal mesh belt design will absorb heat unevenly for the 600mm panel, it will cause uneven ball height after the solder balls are melted. The mobile trolley 140 of the present application can carry the carrier 120 and the panel 150 to move at a variable speed in the reflow furnace. For example, the travel speed of the mobile trolley 140 can be controlled in sections according to different temperature sections in the reflow furnace, so that the panel 150 can absorb heat evenly in the reflow furnace, so as to improve the height uniformity of the input and output terminals 154, so that the height / width of the input and output terminals 154 after the panel 150 is reflowed can meet the required expected specifications, thereby improving the product yield and output. For example, for a 300mm panel, it is estimated that 48 ball planting / reflow outputs can be achieved per hour; for a 600mm panel, it is estimated that 12 ball planting / reflow outputs can be achieved per hour. In addition, when the processing speed of the subsequent process after reflow is slow, the moving speed of the mobile trolley 140 can be controlled to be variable. For example, the moving speed of the mobile trolley 140 can be controlled according to the processing speed of the subsequent process, and the panel can be prevented from colliding with the panels in the subsequent process.

[0028] In some embodiments, a magnet (not shown) may be embedded in the movable trolley 140, and the magnet is enclosed in the movable trolley 140 and is not exposed to the outside. By providing the magnet, the movable trolley 140 can be matched with the magnetic structure in the reflow furnace, which can prevent the movable trolley 140 from contacting the reflow furnace when moving in the reflow furnace, thereby avoiding the problem of the panel colliding with the reflow furnace and causing fragments.

[0029] In some embodiments, the mobile trolley 140 has wheels 142, and the mobile trolley 140 is moved by the wheels 142. Different mobile trolleys 140 (and the panels 150 thereon) can be independently controlled to have different speed changes. In some embodiments, the carrier 120 is detachably mounted on the mobile trolley 140. After the carrier 120 and the mobile trolley 140 are combined, a cavity 130 is formed at the joint surface of the carrier 120 and the mobile trolley 140. After the cavity 130 is evacuated, the carrier 120 is stably mounted on the mobile trolley 140. Figure 2A and Figure 2BIn the illustrated embodiment, the cavity 130 does not overlap with the edge 140s of the moving dolly 140 and the edge 120s of the stage 120 in the vertical direction. In the lateral direction, the edge 120s of the stage 120 and the edge 140s of the moving dolly 140 are both located outside the cavity 130, and the edge 140s of the moving dolly 140 is located outside the edge of the stage 120.

[0030] Continue to refer Figure 2A and Figure 2B As shown, the pressing member 160 is disposed on the upper surface 120u of the carrier 120. The pressing member 160 may be located at the edge of the upper surface 120u of the carrier 120. The pressing member 160 may be disposed on the opposite side of the panel 150 in the lateral direction. In some embodiments, the carrier 120 and the panel 150 may have a rectangular shape in a top-down perspective, and the pressing member 160 may be disposed at the four sides of the rectangular shape of the carrier 120 to press down the four sides of the panel 150. Since the heat of the reflow may cause the panel 150 (especially a large panel) to have a large warping, by arranging the pressing members 160 on the four sides of the panel 150, it is helpful to suppress the warping of the panel (such as smiley face-like warping), and prevent the panel from shaking and hitting the exit of the reflow furnace, thereby avoiding the risk of fragmentation.

[0031] In some embodiments, the pressing member 160 is configured as a clamp that can clamp the panel 150 between the pressing member 160 and the carrier 120. Specifically, the pressing member 160 may include a lower portion 162 connected to the upper surface 120u of the carrier 120, and an upper portion 164 connected to the lower portion 162. The upper portion 164 is rotatably connected to the lower portion 162, and the upper portion 164 can be rotated relative to the lower portion 162. Figure 2A and Figure 2B The panel 150 is rotated in the vertical plane shown to press down on the panel 150 via the upper portion 164 and provide downward force to the panel 150.

[0032] refer to Figure 2A As shown, the upper portion 164 has an end portion 160e that is not connected to the lower portion 162. The end portion 160e of the upper portion 164 is rotated away from the panel 150, and the panel 150 can be removed from the stage 120. Figure 2B As shown, the end 160e of the upper portion 164 is rotated to press down on the panel 150, and a downward force is provided to the panel 150, so that the panel 150 is clamped between the upper portion 164 of the pressing member 160 and the carrier 120. During the reflow of the panel 150, the pressing member 160 remains in a state of pressing down the panel 150. In some embodiments, the panel 150 may include an active area 150F and a peripheral area 150P, and the active area 150F has an input and output terminal 154. Figure 2BAs shown, the force application point of the pressing member 160 on the panel 150 (such as the contact point between the upper portion 164 and the upper surface 150u) does not overlap with the effective area 150F, and the force application point of the pressing member 160 (such as the end) overlaps with the peripheral area 150P of the panel 150. In other embodiments, the pressing member 160 can provide downward pressure on the panel 150 in any other applicable structure and manner.

[0033] Figure 3 FIG. 2 is a schematic top view of a reflow furnace 200 according to an embodiment of the present application. Figure 3 As shown, one side of the reflow furnace 200 (eg Figure 3 The product entrance 202 of the reflow furnace 200 is arranged on the left side (as shown in FIG. Figure 3 The product outlet 204 of the reflow furnace 200 is provided on the right side of the figure. Figure 2A , Figure 2B and Figure 3 As shown, in some embodiments, after the panel 150 is loaded on the moving trolley 140 and the panel 150 is pressed down by the pressing member 160, the moving trolley 140 carries the panel 150 and moves from the product entrance 202 into the reflow furnace 200. After the panel 150 undergoes reflow, the panel 150 can be unloaded from the moving trolley 140 and moved out of the reflow furnace 200 from the product exit 204. In some embodiments, a trolley track can be provided in the reflow furnace 200 (as shown in the following reference Figure 4 ) to define the moving track of the mobile trolley 140. In some embodiments, the trolley track can be set Figure 3 In the area 200A shown by the dotted line.

[0034] Figure 4 FIG. 1 is a schematic top view of a trolley track 300 of a mobile trolley 140 according to an embodiment of the present application. Figure 4 As shown, in a top view, the trolley track 300 may have a U-shape. Specifically, the trolley track 300 may have two straight sections 302, 304, and the two straight sections 302, 304 may be arranged parallel to each other. The trolley track 300 also includes a curved section 306 connecting the two straight sections 302, 304, so that the trolley track 300 has a U-shape.

[0035] In some embodiments, the end 302e of one straight section 302 may be adjacent to the product entrance 202 of the reflow furnace 200. The product exit 204 is located at the middle section of the moving track of the mobile trolley 140 in the reflow furnace 200, for example, adjacent to the curved section 306. During the reflow process, the mobile trolley 140 carries the panel 150 and moves along the straight section 302 and the curved section 306 of the trolley track 300 from the end 302e to undergo the reflow process. When the mobile trolley 140 moves to the product exit 204 adjacent to the curved section 306, the panel 150 may be unloaded from the mobile trolley 140, and the panel 150 may be moved out of the reflow furnace from the product exit 204. Afterwards, the mobile trolley 140 may continue to move along the curved section 306 and another straight section 304 of the trolley track 300, and leave the reflow furnace after moving to the end 304e of the straight section 304. In some embodiments, the mobile trolley 140 can carry the panel 150 and move it between the product inlet 202 and the product outlet 204 at a variable speed, which can make the panel 150 absorb heat evenly in the reflow furnace, thereby improving the height uniformity of the input and output ends 154.

[0036] In summary, the device of the present application for transporting panel products through the reflow furnace can suppress the warping of the panel (especially large panels) when it is heated in the reflow furnace by setting a pressing piece to press down and fix the panel, thereby avoiding the shaking of the panel due to warping, thereby solving the problem of collision and fragmentation caused by the shaking of the panel. By controlling the mobile trolley carrying the panel to move at a variable speed in the reflow furnace, the panel can absorb heat evenly in the reflow furnace, so as to improve the high uniformity of the input and output ends, improve the product yield and output; it can also avoid the collision between the panel that has completed the reflow and the panel in the subsequent process. In addition, by setting a magnet in the mobile trolley, this can prevent the mobile trolley 1 from contacting the reflow furnace when moving in the reflow furnace, thereby avoiding the problem of the panel colliding with the reflow furnace and causing fragmentation.

[0037] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A device for transporting panel products through a reflow furnace, characterized in that: include: The carrier comprises an upper surface for accommodating the panel product, and a pressing member for providing downward pressure to the accommodated panel product; The mobile trolley is used to carry the carrier to move at a variable speed in the reflow furnace.

2. The device for conveying panel products through a reflow furnace according to claim 1, characterized in that: A magnet is embedded in the movable trolley so that the movable trolley cooperates with the magnetic structure in the reflow furnace, so that the movable trolley does not contact the reflow furnace when moving in the reflow furnace.

3. The device for conveying panel products through a reflow furnace according to claim 2, characterized in that: The magnet is enclosed in the movable trolley and is not exposed to the outside.

4. The device for conveying panel products through a reflow furnace according to claim 1, characterized in that: The carrier is detachably arranged on the mobile trolley.

5. The device for conveying panel products through a reflow furnace according to claim 4, characterized in that: After the carrier and the moving trolley are combined, a cavity is formed at the joint surface of the carrier and the moving trolley. After the cavity is evacuated, the carrier is stably arranged on the moving trolley.

6. The device for conveying panel products through a reflow furnace according to claim 5, characterized in that: The cavity does not overlap with the edge of the moving trolley and the edge of the platform in the vertical direction.

7. The device for conveying panel products through a reflow furnace according to claim 1, characterized in that: The pressing member is arranged at the edge of the carrier.

8. The device for conveying panel products through a reflow furnace according to claim 1, characterized in that: Also includes: The trolley track is located in the reflow furnace and is used to limit the moving track of the mobile trolley.

9. The device for conveying panel products through a reflow furnace according to claim 8, characterized in that: The trolley track has a U-shape when viewed from above.

10. The device for conveying panel products through a reflow furnace according to claim 1, characterized in that: The reflow furnace has a product outlet, through which the panel product unloaded from the moving trolley moves out of the reflow furnace, and the product outlet is located at a middle section of a moving track of the moving trolley in the reflow furnace.

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