Intelligent baking oven for electronic components

Abstract

The invention relates to the field of electronic component baking, in particular to an electronic component intelligent baking oven which comprises a machine table, a baking oven fixedly connected to the machine table and the like. The oven is movably connected with an oven door; a heating pipe is arranged on the machine table; the machine table is provided with a control panel; a plurality of material trays are arranged on the machine table; four wheels are mounted on the lowermost tray; two limiting grooves are formed in the machine table; all the wheels are in rolling connection with the machine table; and each limiting groove is matched with two wheels. According to the drying device, vertical heat conduction is achieved through the cooperation of the stacking design of the trays and the heat conduction grooves, uniform distribution of hot air of all layers is ensured through the self-adaptive communication structure of the T-shaped plates and the backflow cavities, and by combining multi-stage treatment of the air purifier and the UV purifier, heat energy recycling and waste gas purification are achieved while the drying efficiency of an electronic element body is improved; the energy consumption is obviously reduced; and the drying quality consistency is ensured.

Description

Technical Field

[0001] The present invention relates to the field of electronic component baking, and in particular to an intelligent baking oven for electronic components. Background Art

[0002] In the electronic component packaging process, the baking process plays a decisive role in the curing quality of the packaging material. In the existing technology, the baking of electronic components is mainly to remove solvents and residues in the packaging process and ensure the curing of the packaging material between the tube shell and the pins. The existing technology has the following defects: First, the traditional flat tray stacking method leads to the obstruction of hot air circulation, and the heating intensity of the lower layer components is lower than that of the upper layer. The multi-layer stacking further aggravates the heat shielding effect and cannot take into account both thermal efficiency and temperature uniformity; Second, the heat field distribution in the oven is uneven, and the temperature difference between the edge and the center area is large. These problems directly affect the packaging airtightness and mechanical strength of the diode, resulting in a high product failure rate, which seriously restricts the reliability improvement of the diode product. Summary of the Invention

[0003] In order to overcome the shortcomings of existing diode baking technology, such as uneven hot air circulation and large differences in oven thermal field distribution caused by the stacking of flat trays, which seriously affect the air tightness and mechanical strength of the package, the present invention provides an intelligent baking oven for electronic components.

[0004] The technical solution of the present invention is: an intelligent baking oven for electronic components, comprising a machine table and an oven fixedly connected to the machine table; the oven is movably connected to a box door; a heating tube is provided on the machine table; the machine table is provided with a control panel; it also includes a material tray; several material trays are provided on the machine table; the lowest material tray is equipped with four wheels; two limit slots are provided on the machine table; all wheels are rollingly connected to the machine table; each limit slot cooperates with two wheels; four limit rods are detachably connected to the lowest material tray; all limit rods are perpendicular to the material tray; several H-shaped material racks are fixed to each material tray; all limit rods are slidably connected to other material trays; the upper parts of all material racks on each material tray are in contact with the bottoms of other material trays; several heat conduction grooves are provided in each material tray; and several material racks are spanned above each heat conduction groove.

[0005] More preferably, the upper portion of the material rack is designed to have a ram-horn-shaped expansion.

[0006] More preferably, a pump is further included; the oven is equipped with the pump; the oven is provided with a reflux chamber; the air inlet of the pump is connected to the oven; and the air outlet of the pump is connected to the reflux chamber.

[0007] More preferably, an air purifier and a UV purifier are also included; an air purifier for removing water and adsorbing VOCs is installed between the air inlet of the pump and the oven; a UV purifier for deeply decomposing residual VOCs is installed between the air outlet of the pump and the reflux chamber.

[0008] More preferably, it also includes an elastic part; a plurality of elastic parts are fixed in the reflux chamber; a plurality of T-shaped plates are slidably connected to the oven; each T-shaped plate is fixed to the adjacent elastic part; all T-shaped plates pass through the front wall of the reflux chamber; each T-shaped plate has a guide chamber; each guide chamber has a reflux port connected to it; the reflux chamber is connected to each reflux port; each tray has a hot flow chamber; each hot flow chamber has a through groove, and each through groove cooperates with a T-shaped plate; each guide chamber is connected to a hot flow chamber; a plurality of air holes are connected between the hot flow chamber on each tray and the corresponding heat conduction groove; a plurality of pins are fixed to the rear of each hot flow chamber; each T-shaped plate is in contact with and cooperates with the adjacent pins.

[0009] More preferably, the pin rod side is covered with a foam protective sleeve.

[0010] More preferably, it further includes a guide bar; the machine table is fixed with two guide bars; each guide bar corresponds to a limiting slot; and all the guide bars are located inside the oven.

[0011] More preferably, it further includes an arc-shaped piece; the box door is equipped with the arc-shaped piece; and the arc-shaped piece is in contact with the bottom material tray.

[0012] More preferably, the limiting groove is an inclined groove with a lower front and a higher rear.

[0013] More preferably, the air purifier includes an air chamber; there are two air chambers in the air purifier; the front air chamber is connected to the oven; the rear air chamber is connected to the pump; each air chamber is detachably connected to a top cover; each top cover is detachably connected to a filter box; a gap is left between the filter box and the inner wall of the air chamber, and a number of air permeable grooves are opened on the filter box; a flexible rubber material conduit is detachably connected between the two filter boxes; each filter box is connected to two card pins; the two ends of the conduit are each matched with the two card pins that fix it to the filter box.

[0014] The beneficial effects are: 1. The present invention realizes vertical heat conduction through the stacking design of the material trays and the heat conduction groove, and uses the adaptive connecting structure of the T-shaped plate and the reflux cavity to ensure uniform distribution of hot air in each layer. Combined with the multi-stage processing of the air purifier and the UV purifier, it realizes heat energy recycling and exhaust gas purification while improving the drying efficiency of the electronic components, significantly reducing energy consumption and ensuring the consistency of drying quality.

[0015] 2. The dual-chamber structure is combined with a filter box equipped with color-changing silica gel and activated carbon to achieve moisture and VOC classification. The modular and detachable filter box structure ensures the thermal energy circulation efficiency of the oven while significantly reducing maintenance difficulty and operating costs, ensuring the drying quality and environmental safety of the electronic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the electronic component intelligent baking oven of the present invention; Figure 2 Schematic diagram of the internal structure of the oven of the present invention; Figure 3 This is a schematic diagram of the installation position of the electronic component body of the present invention; Figure 4 This is a side view of the interior of the reflux chamber of the present invention; Figure 5 A partial cross-sectional view of a T-shaped plate of the present invention; Figure 6 It is an internal side view of the air purifier of the present invention; Figure 7 This is a schematic diagram of the catheter installation position of the present invention.

[0017] In the accompanying drawings: 111-electronic component body, 1-machine, 2-oven, 3-box door, 4-material tray, 5-wheel, 6-limit rod, 7-material rack, 8-pump, 9-air purifier, 10-UV purifier, 11-elastic part, 12-T-shaped plate, 13-pin rod, 14-guide bar, 15-arc-shaped sheet, 101-limiting groove, 201-reflux chamber, 401-heat conduction groove, 402-heat flow chamber, 403-air hole, 1201-flow guide chamber, 1202-reflux port, 901-air chamber, 902-top cover, 903-filter box, 904-duct, 905-pin. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0019] The first embodiment: an electronic component intelligent baking oven, according to Figure 1-Figure 5 As shown, the machine comprises a table 1, an oven 2 and an oven door 3; the oven 2 is fixedly connected to the upper portion of the machine 1; the oven door 3 is hingedly connected to the front of the oven 2; a heating pipe is provided on the machine 1, and the heating pipe is located inside the oven 2; the machine 1 is provided with a control panel, and the control panel is located on the right side of the oven 2; It also includes a material tray 4, wheels 5, limit rods 6 and material racks 7; several material trays 4 distributed up and down are provided on the machine 1; four circumferentially distributed wheels 5 are installed on the lower part of the lowest material tray 4; two limit slots 101 distributed left and right are opened on the machine 1; all wheels 5 are rollingly connected to the machine 1; each limit slot 101 cooperates with two wheels 5; four circumferentially distributed limit rods 6 are detachably connected to the lowest material tray 4; all limit rods 6 are perpendicular to the material tray 4; several evenly distributed material racks 7 are fixed to each material tray 4; all limit rods 6 are slidably connected to other material trays 4; the top of the material rack 7 of each material tray 4 supports the adjacent upper material tray 4; several evenly distributed heat conduction grooves 401 are opened in each material tray 4; several evenly distributed material racks 7 are spanned above each heat conduction groove 401.

[0020] The material rack 7 is H-shaped, and adjacent material racks 7 are used to suspend and limit an electronic component body 111.

[0021] The upper portion of the material rack 7 is designed with a horn-shaped expansion, which facilitates the removal and placement of the electronic component body 111 and reduces scratches, as well as reduces scratches and wear between the material rack 7 and the upper material tray 4.

[0022] It also includes a pump 8; the pump 8 is installed on the upper part of the oven 2; a reflux chamber 201 is opened at the rear of the oven 2; the air inlet of the pump 8 is connected to the oven 2; and the air outlet of the pump 8 is connected to the reflux chamber 201.

[0023] It also includes an air purifier 9 and a UV purifier 10; the air purifier 9 is installed between the air inlet of the pump 8 and the oven 2; the air purifier 9 is used for removing water and adsorbing VOCs; the UV purifier 10 is installed between the air outlet of the pump 8 and the reflux chamber 201; the UV purifier 10 decomposes residual VOCs through photocatalysis.

[0024] The oven 201 further comprises an elastic member 11, a T-shaped plate 12 and a pin 13; a plurality of elastic members 11 are fixedly connected to the reflux chamber 201; the elastic member 11 is a spring; a plurality of T-shaped plates 12 are slidably connected to the rear of the oven 2 and distributed vertically; each T-shaped plate 12 is fixedly connected to the adjacent elastic member 11; all T-shaped plates 12 pass through the front wall of the reflux chamber 201; each T-shaped plate 12 has a guide chamber 1201; each guide chamber 1201 has a reflux port 1202; the reflux chamber 201 and each reflux port 12 are connected to each other. 02 are all connected; each material tray 4 has a heat flow cavity 402; each heat flow cavity 402 has a through groove at the rear, and each through groove cooperates with a T-shaped plate 12; each guide cavity 1201 is connected with a heat flow cavity 402; a plurality of evenly distributed air holes 403 are connected between the heat flow cavity 402 on each material tray 4 and the corresponding heat conduction groove 401; a plurality of left and right distributed pins 13 are fixed to the rear of each heat flow cavity 402; each T-shaped plate 12 is in contact with and cooperates with the adjacent pins 13.

[0025] The side of the pin rod 13 is covered with a foam protective sleeve to prevent the T-shaped plate 12 from being damaged when the T-shaped plate 12 contacts the pin rod 13 .

[0026] It also includes a guide bar 14 ; the machine 1 is fixedly connected to two guide bars 14 distributed on the left and right; each guide bar 14 corresponds to a limiting groove 101 ; all the guide bars 14 are located in the oven 2 .

[0027] The box door 3 further includes an arc-shaped piece 15 ; the arc-shaped piece 15 is installed at the lower part of the box door 3 ; the arc-shaped piece 15 contacts and cooperates with the lowermost material tray 4 .

[0028] The limiting groove 101 is an inclined groove, which is lower at the front and higher at the back, so as to facilitate guiding the wheel 5 to come out of the limiting groove 101 and cooperate with the guide bar 14.

[0029] The working steps of the above embodiment are: Place the bottom tray 4 with wheels 5 on a horizontal surface, and then place each electronic component body 111 on two H-shaped racks 7 using an external manipulator. Figure 3 As shown, until the material rack 7 is full, another material tray 4 is taken and placed on the horizontal table surface, and the above-mentioned placement process of the electronic component body 111 is repeated, and the material tray 4 is filled with the electronic component body 111. The robot transfers the material tray 4 to the top of the bottom material tray 4 for stacking, and the four limit rods 6 penetrate the material tray 4 until the bottom surface of the material tray 4 contacts the horn-shaped material rack 7 below. The lower material rack 7 supports the upper material tray 4 and the components, and thus the above-mentioned operation is repeated to realize the stacking of the material trays 4. When the material trays 4 are stacked, the positions of the respective heat conduction grooves 401 on adjacent material trays 4 correspond to each other, so that when the electronic component body 111 is placed in the oven 2 for baking, the heat from the bottom can be conducted upward through the heat conduction grooves 401 that pass through the upper and lower parts, and the electronic component body 111 is mounted between the two material racks 7. The position of the electronic component body 111 is between the adjacent material trays 4, and the neatly arranged electronic component bodies 111 prevent the electronic component body 111 from completely blocking the upward hot air flow, thereby preventing the upper components from being heated unevenly.

[0030] After the above preparations have been completed, the box door 3 is opened, and the external manipulator is controlled to clamp the material tray 4 with wheels 5, and move the material tray 4 so that each two wheels 5 are located in a limiting groove 101, and then the external manipulator is controlled to push the material tray 4 with wheels 5 to move in the limiting groove 101, to ensure that the wheels 5 move in a straight line, and the setting of the limiting groove 101 will not affect the opening and closing of the box door 3, wherein the limiting groove 101 is inclined, with the front lower and the rear higher. Therefore, when the wheel 5 moves in the limiting groove 101, when the rear wheel 5 reaches the rear end of the limiting groove 101, the rear wheel 5 is flush with the top of the machine 1, and the wheel 5 can smoothly disengage from the limiting groove 101, and the rear wheel 5 is then engaged with the two guide bars 14 in the oven 2. The guide bars 14 limit the wheels 5 until all the wheels 5 enter the oven 2, and then the operator closes the box door 3. Figure 4 As shown, the electronic component body 111 is placed on two H-shaped racks 7, which not only supports the electronic component body 111, but also limits the electronic component body 111 to prevent the wheel 5 from falling off the rack 7 when moving in the inclined limiting groove 101.

[0031] When the box door 3 is closed, the arc-shaped piece 15 on it contacts and pushes the lowest material tray 4 to move backward. When the material tray 4 moves backward, the T-shaped plate 12 is inserted into the groove behind the material tray 4, so that the guide chamber 1201 is connected with the hot flow chamber 402. When the T-shaped plate 12 contacts the pin 13, as the material tray 4 moves backward, the pin 13 on the material tray 4 pushes the T-shaped plate 12 to move backward, and the corresponding elastic member 11 is compressed, and the return port 1202 is connected with the return chamber 201. The setting of the arc-shaped piece 15 can also support the material tray 4 to prevent the material tray 4 from being pushed forward by the elastic member 11 and the hot air blown out from the guide chamber 1201. The material tray 4 moves forward, the T-shaped plate 12 is reset, and the return port 1202 is not connected with the return chamber 201, thereby hindering the heat circulation.

[0032] Next, the heating element in the machine 1 is controlled to start, and the temperature inside the oven 2 is increased. The hot air flows through the vertically connected heat conduction grooves 401 to form an ascending channel, and evenly dry the electronic component bodies 111 of each layer. When the heat gathers at the upper part of the oven 2, the pump 8 is controlled to start. The pump 8 extracts the air from the upper part of the oven 2. When the extracted air passes through the air purifier 9, the air purifier 9 first removes water from the air and then absorbs VOC. Then the pump 8 pumps the air to the reflux chamber 201. Before entering the reflux chamber 201, the air will also pass through the UV purifier 10. The UV purifier 10 decomposes and purifies the VOC remaining in the air, and then the air enters the reflux chamber 201. The number of trays 4 stacked is such that the return port 1202 of the corresponding T-shaped plate 12 is connected to the return chamber 201, and the air in the return chamber 201 enters the guide chamber 1201 through the corresponding return port 1202, and then is ejected to each heat conduction groove 401 through the hot flow cavity 402 and the air hole 403. The electronic component body 111 is located above the corresponding heat conduction groove 401, so the return air ensures that the electronic component body 111 on each tray 4 is fully dried, and the waste heat is reused through air circulation. In addition, the electronic component body 111 at each position on each tray 4 can be accurately dried, thereby reducing the drying time and improving the drying efficiency of the electronic component body 111.

[0033] Second embodiment: Based on the first embodiment, Figure 1-Figure 7 As shown, the air purifier 9 includes an air chamber 901, a top cover 902, a filter box 903, a guide tube 904 and a card pin 905; the air purifier 9 has two air chambers 901 distributed front and back; the front air chamber 901 is connected to the oven 2; the rear air chamber 901 is connected to the pump 8; each air chamber 901 is detachably connected to a top cover 902; each top cover 902 is detachably connected to a filter box 903; the front filter box 903 is filled with color-changing silica gel particles; The filter box 903 at the rear is filled with activated carbon particles; there is a gap between the filter box 903 and the inner wall of the air chamber 901, and a number of ventilation grooves are opened on the filter box 903; a detachable conduit 904 is connected between the two filter boxes 903; the conduit 904 is a rubber hose; each filter box 903 is connected to two card pins 905 distributed on the left and right; the two ends of the conduit 904 are respectively matched with two card pins 905, and the card pins 905 are used to fix the conduit 904 on the filter box 903.

[0034] The working steps of the above embodiment are: On the basis of the first embodiment, when extracting the air from the upper part of the oven 2, during the air circulation process, moisture and VOC are generated when the electronic component body 111 is dried, and need to be processed by the air purifier 9. After the pump 8 is started, the air from the upper part of the oven 2 enters the front air chamber 901, and the air chamber 901 is provided with a filter box 903. The color-changing silica gel particles filled in the filter box 903 can absorb the moisture in the air entering the air chamber 901, and then the air enters the rear air chamber 901 through the conduit 904. The air chamber 901 is provided with a filter box 903 containing activated carbon. When the air passes through the filter box 903, the VOC in the air is absorbed, thereby removing the moisture and VOC in the drying process. The residual VOC can also be photodecomposed and purified by the UV purifier 10.

[0035] The air circulation in the oven 2 is mainly for circulating the heat in the oven 2. Therefore, when removing water from the air in the oven 2, the condensation method is not used, but the adsorption method is used to reduce the heat loss. The color-changing silica gel particles are used for absorption, which is low in cost and simple to maintain. However, regular maintenance is required, and the activated carbon also needs to be replaced regularly. Therefore, the two filter boxes 903 are set as a detachable structure. When replacing the filter box 903, only the top cover 902 needs to be removed to extract the filter box 903 in the air chamber 901, and then the filter box 903 is removed from the top cover 902. By unscrewing it upward, the color-changing silica gel or activated carbon particles in the filter box 903 can be replaced. When only one group needs to be replaced, it is only necessary to rotate the card pin 905 on the corresponding top cover 902 so that the card pin 905 no longer fixes the catheter 904 on the corresponding top cover 902, and then the end of the catheter 904 in the top cover 902 can be pulled out, and then the top cover 902 can be lifted upward, and the corresponding filter box 903 can be pulled out from the air chamber 901 at the same time, and then the contents of the corresponding filter box 903 can be replaced and reset.

[0036] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An intelligent baking oven for electronic components, comprising a machine table (1) and an oven (2) fixed to the machine table (1); the oven (2) is movably connected to a door (3); a heating tube is provided on the machine table (1); the machine table (1) is provided with a control panel; and the characteristics are: The machine also includes a material tray (4); a plurality of material trays (4) are provided on the machine (1); four wheels (5) are installed on the lowest material tray (4); two limiting grooves (101) are provided on the machine (1); all wheels (5) are rollingly connected to the machine (1); each limiting groove (101) is matched with two wheels (5); four limiting rods (6) are detachably connected to the lowest material tray (4); all limiting rods (6) are perpendicular to the material tray (4); a plurality of H-shaped material racks (7) are fixedly connected to each material tray (4); all limiting rods (6) are slidingly connected to other material trays (4); the upper part of the material rack (7) on each material tray (4) contacts the bottom of the adjacent material tray (4); a plurality of heat conduction grooves (401) are provided in each material tray (4); and a plurality of material racks (7) are spanned above each heat conduction groove (401).

2. The electronic component intelligent baking oven according to claim 1, characterized in that: The upper portion of the material rack (7) is designed to have a horn-shaped expansion.

3. The electronic component intelligent baking oven according to claim 2, characterized in that: It also includes a pump (8); the drying oven (2) is equipped with the pump (8); the drying oven (2) is provided with a reflux chamber (201); the air inlet of the pump (8) is connected to the drying oven (2), and the air outlet is connected to the reflux chamber (201).

4. The electronic component intelligent baking oven according to claim 3, characterized in that: The apparatus further comprises an air purifier (9) and a UV purifier (10); an air purifier (9) for removing water from the air extracted from the oven (2) and adsorbing VOCs is installed between the air inlet of the pump (8) and the oven (2); and a UV purifier (10) for photocatalytically decomposing residual VOCs is installed between the air outlet of the pump (8) and the reflux chamber (201).

5. The electronic component intelligent baking oven according to claim 4, characterized in that: The oven (201) further comprises an elastic member (11); a plurality of elastic members (11) are fixedly connected in the reflux chamber (201); a plurality of T-shaped plates (12) are slidably connected to the oven (2); each T-shaped plate (12) is fixedly connected to the adjacent elastic member (11); all T-shaped plates (12) pass through the front wall of the reflux chamber (201); a guide chamber (1201) is provided in each T-shaped plate (1201); each guide chamber (1201) has a reflux port (1202); the reflux chamber (201) is communicated with each reflux port (1202); each A heat flow cavity (402) is provided in each material tray (4); each heat flow cavity (402) is provided with a through slot, and each through slot is matched with a T-shaped plate (12); each flow conducting cavity (1201) is connected with a heat flow cavity (402); a plurality of air holes (403) are connected between the heat flow cavity (402) on each material tray (4) and the corresponding heat conducting slot (401); a plurality of pins (13) are fixed to the rear of each heat flow cavity (402); and each T-shaped plate (12) is in contact with and matched with an adjacent pin (13).

6. The electronic component intelligent baking oven according to claim 5, characterized in that: The side of the pin rod (13) is covered with a foam protective sleeve.

7. The electronic component intelligent baking oven according to claim 6, characterized in that: It also includes guide bars (14); the machine (1) is fixedly connected to two guide bars (14); each guide bar (14) corresponds to a limiting groove (101); and all the guide bars (14) are located in the oven (2).

8. The electronic component intelligent baking oven according to claim 7, characterized in that: It also includes an arc-shaped piece (15); the box door (3) is equipped with the arc-shaped piece (15); the arc-shaped piece (15) contacts and cooperates with the lowermost material tray (4).

9. The intelligent baking oven for electronic components according to any one of claims 1 to 8, characterized in that: The limiting groove (101) is an inclined groove with a lower front and a higher rear.

10. The electronic component intelligent baking oven according to claim 9, characterized in that: The air purifier (9) includes an air chamber (901); two air chambers (901) are provided in the air purifier (9); the front air chamber (901) is connected to the oven (2); the rear air chamber (901) is connected to the pump (8); each air chamber (901) is detachably connected to a top cover (902); each top cover (902) is detachably connected to a filter box (903); a gap is left between the filter box (903) and the inner wall of the air chamber (901), and a plurality of air permeable grooves are provided on the filter box (903); a flexible rubber material conduit (904) is detachably connected between the two filter boxes (903); each filter box (903) is connected to two clamping pins (905); and both ends of the conduit (904) are engaged with the two clamping pins (905) that fix it to the filter box (903).

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