Automatic double-layer glass printing dust-free baking line

Abstract

The utility model discloses an automatic double-layer glass printing dust-free baking line which is characterized in that the automatic double-layer glass printing dust-free baking line comprises a feeding buffer mechanism, a feeding mechanism, a furnace body, a discharging mechanism and a discharging buffer mechanism which are sequentially arranged in the direction of the baking line, and the furnace body comprises a heating section and a cooling section connected with the heating section; the heating section and the cooling section are provided with an upper channel and a lower channel which are oppositely arranged up and down and isolated from each other, and the feeding buffering mechanism is used for buffering and laying materials and conveying the materials to the lower channel of the heating section after the materials are fully laid, or the fully-laid materials are conveyed to the upper channel of the heating section through the feeding mechanism. Materials flowing through the heating section and the cooling section are conveyed to the discharging temporary storage mechanism from the lower channel, or materials in the upper channel are conveyed to the discharging temporary storage mechanism through the discharging mechanism. The upper channel and the lower channel are arranged on the heating section and the cooling section of the furnace body, and materials are temporarily stored and laid, so that the space of a production line is saved, and meanwhile, the baking efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of baking, in particular to an automatic double-layer glass printing dust-free baking line. Background Art

[0002] Traditional walking tunnel furnaces have hot air circulation systems, single-layer conveyor belts, etc. Glass and other materials enter the drying channel of the tunnel furnace through the single-layer conveyor belt, and are dried by circulating hot air. However, since materials can only be conveyed in a single layer, the production line of traditional walking tunnel furnaces is long, the space occupied is large, and only a single row of materials can be baked at a time, resulting in low baking efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide an automated double-layer glass printing dust-free baking line that saves production line space and improves baking efficiency, so as to solve the problems of long tunnel furnace production line, large space occupation and low baking efficiency proposed in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An automated double-layer glass printing dust-free baking line comprises a feed buffer mechanism, a loading mechanism, a furnace body, a discharge mechanism and a discharge buffer mechanism which are sequentially arranged along the baking line direction, the furnace body comprises a heating section and a cooling section connected to the heating section, the heating section and the cooling section are both provided with an upper channel and a lower channel which are arranged opposite to each other and isolated from each other, the feed buffer mechanism is used to cache and spread the material and convey the material to the lower channel of the heating section after the material is fully spread, or convey the fully spread material to the upper channel of the heating section through the loading mechanism, the material flowing through the heating section and the cooling section in sequence is conveyed from the lower channel to the discharge buffer mechanism, or convey the material in the upper channel to the discharge buffer mechanism through the discharge mechanism.

[0006] Preferably, the feed buffer mechanism comprises a base frame and a plurality of feed diversion components arranged on the base frame at intervals in a direction perpendicular to the baking line, and the plurality of feed diversion components transport materials independently.

[0007] Preferably, the feed diversion assembly includes a first rotating shaft and a first roller, a plurality of the first rotating shafts are arranged on the base frame at intervals along the baking line direction, the first rotating shaft is rotatably arranged and its axis is perpendicular to the baking line direction, and a plurality of the first rollers are spaced and fixedly sleeved on the first rotating shaft.

[0008] Preferably, the feed buffer mechanism includes a transfer assembly, which includes a first screw rod, a slide, a second motor, a first cylinder and a lifting frame. The first screw rod is rotatably arranged at the lower part of the base frame below the first rotating shaft, the slide is threadedly connected to the first screw rod, and the second motor connected to one end of the first screw rod is fixedly arranged on the base frame. The piston rod of the first cylinder fixed on the top of the slide is upwardly connected to the lifting frame for lifting materials.

[0009] Preferably, the feeding mechanism includes a support frame, a lifting platform and two lifting components. The lifting platform is arranged in the middle of the support frame for lifting along the vertical direction, and the two lifting components are respectively arranged on both sides of the support frame to drive the lifting platform to rise and fall.

[0010] Preferably, the lifting assembly includes a second screw rod and a third motor. The second screw rod is rotatably arranged on the support frame along the vertical direction. The output shaft of the third motor arranged on the support frame is connected to one end of the second screw rod. The two ends of the lifting platform are respectively threadedly connected to the second screw rods of the two lifting assemblies.

[0011] Preferably, the feeding mechanism includes a first feeding assembly, the first feeding assembly includes a second rotating shaft and a second roller, a plurality of the second rotating shafts are arranged on the lifting platform at intervals along the direction of the baking line, the second rotating shaft is rotatably arranged and its axis is perpendicular to the direction of the baking line, and a plurality of the second rollers are spaced and fixedly mounted on the second rotating shaft.

[0012] Preferably, the furnace body comprises an upper channel and a lower channel of the feeding section arranged at one end of the heating section opposite to the cooling section and extending through the feeding section, and conveyor belts for feeding are horizontally arranged in the upper channel and the lower channel along the baking line direction.

[0013] Preferably, the side walls of the upper channel and the lower channel of the feeding section are provided with an automatic tensioning mechanism, and the automatic tensioning mechanism includes a second cylinder and an anti-deflection roller, the second cylinder is arranged on the inner wall of the upper channel or the lower channel, the conveyor belt is wound on the anti-deflection roller, and one end of the telescopic rod of the second cylinder is connected to the anti-deflection roller for correcting the conveyor belt.

[0014] Preferably, a heating structure is provided in the upper channel and the lower channel of the heating section, and the heating structure includes a hot air blower arranged at the top of the upper channel and electric heating pipes respectively arranged in the upper channel and the lower channel, and the electric heating pipes are installed above the conveyor belt through a detachable bracket.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. By setting the upper and lower channels in the furnace heating section and cooling section and paving the material buffer, the production line space is saved and the baking efficiency is improved;

[0017] 2. The position-limiting photoelectric device sends an adjustment signal to the second cylinder, which drives the anti-deviation roller to move up and down, thereby changing the tensioning friction between the conveyor belt and the conveyor roller, returning the conveyor belt to its initial position, completing the deviation correction and adjusting the tension of the conveyor belt;

[0018] 3. The third cylinder drives the roller surface of the dust-sticking roller to fit tightly with the surface of the conveyor belt, so that the impurities on the surface of the conveyor belt are adsorbed by the dust-sticking roller. Through the filtering device connected to the hot air blower, the air entering the upper channel and the lower channel meets the dust-free requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a side view of the utility model;

[0021] Figure 3 It is a three-dimensional diagram of the material feeding and buffering mechanism and the material loading mechanism of the utility model;

[0022] Figure 4 It is a three-dimensional diagram of the feeding and caching mechanism of the utility model;

[0023] Figure 5 It is a front view of the feeding and caching mechanism of the utility model;

[0024] Figure 6 It is a three-dimensional diagram of the feeding mechanism of the utility model;

[0025] Figure 7 It is a side view of the feeding mechanism of the utility model;

[0026] Figure 8 It is a front view of the feeding mechanism of the utility model;

[0027] Fig. 9 It is a side view of the feeding section of the furnace body of the utility model;

[0028] Fig.10 It is a front view of the heating section of the furnace body of the utility model.

[0029] The markings in the figure correspond to the following:

[0030] 1-feeding buffer mechanism; 11-bottom frame; 12-feeding diversion assembly; 121-first rotating shaft; 122-first roller; 123-first motor; 13-transplanting assembly; 131-first screw rod; 132-sliding seat; 133-second motor; 134-first cylinder; 135-lifting frame; 2-feeding mechanism; 21-support frame; 22-lifting platform; 23-lifting assembly; 231-second screw rod; 232-third motor; 233-synchronous screw motor; 24-first input Material assembly; 241-second rotating shaft; 242-second roller; 25-second feeding assembly; 3-furnace body; 31-heating section; 32-cooling section; 33-feeding section; 301-upper channel; 302-lower channel; 303-conveyor belt; 4-unloading mechanism; 5-discharging buffer mechanism; 6-automatic tensioning mechanism; 61-second cylinder; 62-anti-deviation roller; 7-dust sticking mechanism; 71-third cylinder; 72-dust sticking roller; 8-heating structure; 81-hot air blower; 82-electric heating pipe. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-3 as well as Fig.10 , an automated double-layer glass printing dust-free baking line, comprising a feed buffer mechanism 1, a loading mechanism 2, a furnace body 3, a discharge mechanism 4 and a discharge buffer mechanism 5 arranged in sequence along the baking line direction. The furnace body 3 comprises a heating section 31 and a cooling section 32 connected to the heating section 31, and the heating section 31 and the cooling section 32 are both provided with an upper channel 301 and a lower channel 302 which are arranged in an upper and lower direction and isolated from each other. The material delivered from the previous process is delivered to the feed buffer mechanism 1, and the feed buffer mechanism 1 is used to lay the material buffer and deliver the material to the lower channel 302 of the heating section 31 after the material is fully laid, or to deliver the fully laid material to the upper channel 301 of the heating section 31 through the loading mechanism 2, thereby saving the production line space and improving the baking efficiency. The material flowing through the heating section 31 and the cooling section 32 in sequence is delivered from the lower channel 302 to the discharge buffer mechanism 5, or the material in the upper channel 301 is delivered to the discharge buffer mechanism 5 through the discharge mechanism 4.

[0033] See also Figure 3-5The feed buffer mechanism 1 includes a base frame 11 and a plurality of feed diverter assemblies 12 arranged on the base frame 11 at intervals in a direction perpendicular to the baking line, and the plurality of feed diverter assemblies 12 independently transport materials. In this embodiment, the feed buffer mechanism 1 includes three feed diverter assemblies 12 arranged side by side, and the feed diverter assemblies 12 include a first rotating shaft 121 and a first roller 122, and the plurality of first rotating shafts 121 are arranged on the base frame 11 at intervals in the direction of the baking line. The first rotating shaft 121 is rotatably arranged and its axis is perpendicular to the direction of the baking line, and the plurality of first rollers 122 are spaced and fixedly sleeved on the first rotating shaft 121.

[0034] In this embodiment, the feed diversion assembly 12 further includes a first motor 123 for driving the first rotating shaft 121 to rotate. The first motor 123 drives the first rotating shaft 121 to rotate by gear meshing or belt transmission. The gear or belt structure in the prior art can be used, and its structure is not repeated here. The first roller 122 rolls and drives the material forward under the indirect drive of the first motor 123. The first roller 122 can use a PEEK roller sheet to reduce scratches on the material.

[0035] See also Figure 5 The feed buffer mechanism 1 includes a transfer assembly 13, which includes a first screw rod 131, a slide 132, a second motor 133, a first cylinder 134 and a lifting frame 135. The first screw rod 131 is rotatably arranged at the lower part of the base frame 11 below the first rotating shaft 121, and the slide 132 is threadedly connected to the first screw rod 131. The second motor 133 connected to one end of the first screw rod 131 is fixedly arranged on the base frame 11, and is used to drive the first screw rod 131 to rotate, so that the slide 132 moves back and forth along the axial direction of the first screw rod 131 under the drive of the first screw rod 131. The piston rod of the first cylinder 134 fixed on the top of the slide 132 is upwardly connected to the lifting frame 135 for lifting the material, so that the lifting frame 135 can lift the material on the feed diverter assembly 12 located in the middle position and place it on the first roller 122 of the feed diverter assembly 12 on both sides, so as to spread it on the top of the first roller 122 and cache it.

[0036] The lifting frame 135 includes a bottom plate and a plurality of push rods (not shown) vertically arranged on the bottom plate, and the top ends of the plurality of push rods pass through two adjacent first rotating shafts 121 to lift the material upward. In this embodiment, a suction cup is arranged at the top end of the push rod, and the suction cup firmly sucks the bottom surface of the material to prevent the material from falling from the lifting frame 135 during the movement of the lifting frame 135 and causing damage to the material.

[0037] See also Figure 6-8The feeding mechanism 2 includes a support frame 21, a lifting platform 22 and two lifting components 23. The lifting frame is arranged at the front end of the base frame 11, and the lifting platform 22 is arranged in the middle of the support frame 21 to be lifted and lowered in the vertical direction. The two lifting components 23 are respectively arranged on both sides of the support frame 21 to drive the lifting platform 22 to lift and lower. The lifting component 23 includes a second screw rod 231 and a third motor 232. The second screw rod 231 is rotatably arranged on the support frame 21 in the vertical direction. The output shaft of the third motor 232 arranged on the support frame 21 is connected to one end of the second screw rod 231, which is used to drive the second screw rod 231 to rotate. The two ends of the lifting platform 22 are respectively threadedly connected to the second screw rod 231 of the two lifting components 23. When the second screw rod 231 rotates, the lifting platform 22 is driven to lift and lower along the axial direction of the second screw rod 231. The two third motors 232 are respectively connected to a synchronous screw motor 233, and the two third motors 232 are driven by the synchronous screw motor 233 to drive the second screw rod 231 to rotate synchronously.

[0038] See also Figure 6-7 The feeding mechanism 2 includes a first feeding assembly 24, and the first feeding assembly 24 includes a second rotating shaft 241 and a second roller 242. A plurality of the second rotating shafts 241 are arranged on the lifting platform 22 at intervals along the baking line direction. The second rotating shaft 241 is rotatably arranged and its axis is perpendicular to the baking line direction. A plurality of the second rollers 242 are arranged on the second rotating shaft 241 at intervals and fixedly. The first feeding assembly 24 includes a fourth motor (not shown) arranged on the lifting platform 22, and the fourth motor drives the second rotating shaft 241 to rotate by gear meshing or belt transmission. In this embodiment, the second roller 242 on the second rotating shaft 241 is divided into three conveying areas to correspond to the corresponding inlet diversion assemblies 12 respectively.

[0039] The feeding mechanism 2 includes a second feeding assembly 25 disposed between the first feeding assembly 24 and the heating section 31. The second feeding assembly 25 is disposed on the support frame 21 at the front end of the lifting platform 22. The second feeding assembly 25 is disposed up and down on the support frame 21 and is located on one side of the first feeding assembly 24. The structure of the second feeding assembly 25 is the same as that of the first feeding assembly 24 in this embodiment, and will not be repeated here.

[0040] See also Figure 2 , Figure 7 as well as Fig. 9The furnace body 3 includes a feeding section 33 arranged at one end of the heating section 31 relative to the cooling section 32, and the feeding section 33 is connected to the second feeding assembly 25 at one end relative to the heating section 31. The upper channel 301 and the lower channel 302 of the heating section 31 and the cooling section 32 penetrate into the feeding section 33, and a conveyor belt 303 for feeding is horizontally arranged in the upper channel 301 and the lower channel 302 along the baking line direction. The conveyor belt 303 is supported and conveyed by a conveyor roller arranged below the conveyor belt 303, and a plurality of the conveyor rollers are arranged up and down, so that the conveyor belt 303 forms an annular conveying structure. The conveyor belt 303 adopts a Teflon conveyor mesh belt to effectively control the damage of the conveyor belt 303 to the glass. At the same time, the Teflon conveyor mesh belt makes the contact area between the material and the heat source larger, thereby increasing the baking area of ​​the material, thereby improving the baking efficiency of the material.

[0041] See also Fig. 9 The side walls of the upper channel 301 and the lower channel 302 of the feeding section 33 are provided with an automatic tensioning mechanism 6, and the automatic tensioning mechanism 6 includes a second cylinder 61 and an anti-deflection roller 62. The second cylinder 61 is arranged on the inner wall of the upper channel 301 or the lower channel 302, and the conveyor belt 303 is wound around the anti-deflection roller 62. One end of the telescopic rod of the second cylinder 61 is connected with the anti-deflection roller 62 for correcting the deflection of the conveyor belt 303. Both the upper channel 301 and the lower channel 302 are provided with a position-limiting photoelectric device for detecting whether the conveyor belt 303 is deflected. When the position-limiting photoelectric device detects that the conveyor belt 303 is deflected, the position-limiting photoelectric device sends an adjustment signal to the second cylinder 61, and the second cylinder 61 drives the anti-deflection roller 62 to move up and down, thereby changing the tensioning friction between the conveyor belt 303 and the conveyor roller, so that the conveyor belt 303 returns to the initial position, and the conveyor belt 303 is tensioned and adjusted while completing the deflection correction.

[0042] The upper channel 301 and the lower channel 302 of the feeding section 33 are provided with a dust sticking mechanism 7, and the dust sticking mechanism 7 includes a third cylinder 71 and a dust sticking roller 72. The third cylinder 71 is provided on the inner wall of the upper channel 301 or the lower channel 302, and one end of the telescopic rod of the third cylinder 71 is connected to the dust sticking roller 72 which abuts against the surface of the conveyor belt 303. When the conveyor belt 303 needs to be cleaned, the roller surface of the dust sticking roller 72 is driven by the third cylinder 71 to fit tightly with the surface of the conveyor belt 303, so that the impurities on the surface of the conveyor belt 303 are adsorbed by the dust sticking roller 72.

[0043] See also Figure 1-2 as well as Fig.10A heating structure 8 is provided in the upper channel 301 and the lower channel 302 of the heating section 31, and the heating structure 8 includes a hot air blower 81 provided at the top of the upper channel 301 and electric heating pipes 82 provided in the upper channel 301 and the lower channel 302, respectively. The electric heating pipe 82 is installed above the conveyor belt 303 through a detachable bracket, and the hot air blower 81 is connected to the upper channel 301 and the lower channel 302 through a pipeline. In this embodiment, the electric heating pipe 82 is fixed to the bracket by pulling. The upper channel 301 and the lower channel 302 of the cooling section 32 are provided with a cooling device for cooling the material, and the cooling device can adopt the air cooling or water cooling method in the prior art, which will not be repeated here.

[0044] The heating section 31 and the cooling section 32 of the furnace body 3 are both provided with inspection doors (not shown) for easy inspection. The upper channel 301 and the top of the lower channel 302 of the heating section 31 and the cooling section 32 are both provided with a filter device for filtering air, and the filter device is connected to the hot air blower 81, so that the air entering the upper channel 301 and the lower channel 302 meets the dust-free requirements.

[0045] In this embodiment, the structure of the unloading mechanism 4 is the same as that of the loading mechanism 2, except that the conveying direction is opposite. The structure of the discharge buffer mechanism 5 is the same as that of the feed buffer mechanism 1, except that the conveying direction is opposite, which will not be repeated here.

[0046] The working principle of an automated double-layer glass printing dust-free baking line of the utility model is as follows: when the material delivered from the previous process is delivered to the feed diversion assembly 12 of the feed buffer mechanism 1, the slide 132 of the transplanting assembly 13 is driven by the first screw rod 131 to move axially along the first screw rod 131 to the bottom of the feed diversion assembly 12 at the middle position, and the piston rod of the first cylinder 134 drives the lifting frame 135 to pass through the gap between the first rotating shafts 121 and lift the material on the first roller 122 upward; then the slide 132 is driven by the first screw rod 131 to move axially along the first screw rod 131 to the bottom of the feed diversion assembly 12 on both sides, and the piston rod of the first cylinder 134 contracts downward, so that the material on the lifting frame 135 is placed on the first roller 122; when the material covers the first roller 12 2, the first motors 123 of the plurality of feed diversion components 12 drive the first rollers 122 on the first rotating shaft 121 to rotate, so that the materials are transported to the lifting platform 22 of the feeding mechanism 2, and the first feeding component 24 on the lifting platform 22 can further transport the materials to the second feeding component 25 below, or the lifting platform 22 can be driven to rise along the axial direction of the second screw rod 231 to the second feeding component 25 above through the rotation of the second screw rod 231, and the materials are further transported to the second feeding component 25; then, the second feeding component 25 further transports the materials to the conveyor belt 303 of the feed section 33, and the materials are sequentially transported to the heating section 31 and the cooling section 32 through the conveyor belt 303, and finally, the materials are output from the cooling section 32 through the unloading mechanism 4 and the discharging buffer mechanism 5.

[0047] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated double-layer glass printing dust-free baking line, characterized by: The invention comprises a material feeding buffer mechanism (1), a feeding mechanism (2), a furnace body (3), a feeding mechanism (4) and a material discharging buffer mechanism (5) which are sequentially arranged along the baking line direction. The furnace body (3) comprises a heating section (31) and a cooling section (32) connected to the heating section (31). The heating section (31) and the cooling section (32) are both provided with an upper channel (301) and a lower channel (302) which are arranged in an upper and lower direction and isolated from each other. The material feeding buffer mechanism (1) is used to lay out the material buffer and convey the material to the lower channel (302) of the heating section (31) after the material is fully laid, or convey the fully laid material to the upper channel (301) of the heating section (31) through the feeding mechanism (2), and the material which flows through the heating section (31) and the cooling section (32) in sequence is conveyed from the lower channel (302) to the material discharging buffer mechanism (5), or convey the material in the upper channel (301) to the material discharging buffer mechanism (5) through the feeding mechanism (4).

2. The automatic double-layer glass printing dust-free baking line according to claim 1 is characterized by: The material inlet buffer mechanism (1) comprises a base frame (11) and a plurality of material inlet flow diversion components (12) arranged on the base frame (11) at intervals in a direction perpendicular to the baking line, wherein the plurality of material inlet flow diversion components (12) respectively and independently transport materials.

3. The automatic double-layer glass printing dust-free baking line according to claim 2 is characterized by: The inlet flow distribution assembly (12) comprises a first rotating shaft (121) and a first roller (122); a plurality of the first rotating shafts (121) are arranged on the base frame (11) at intervals along the baking line direction; the first rotating shaft (121) is rotatably arranged with its axis perpendicular to the baking line direction; and a plurality of the first rollers (122) are arranged on the first rotating shaft (121) at intervals and fixedly.

4. The automatic double-layer glass printing dust-free baking line according to claim 3 is characterized by: The feeding buffer mechanism (1) comprises a transfer assembly (13), the transfer assembly (13) comprising a first screw rod (131), a slide seat (132), a second motor (133), a first cylinder (134) and a lifting frame (135), the first screw rod (131) being rotatably arranged at the lower part of the base frame (11) below the first rotating shaft (121), the slide seat (132) being threadedly connected to the first screw rod (131), the second motor (133) connected to one end of the first screw rod (131) being fixedly arranged on the base frame (11), and the piston rod of the first cylinder (134) fixed on the top of the slide seat (132) being upwardly connected to the lifting frame (135) for lifting materials.

5. The automatic double-layer glass printing dust-free baking line according to claim 1 is characterized by: The feeding mechanism (2) comprises a support frame (21), a lifting platform (22) and two lifting components (23); the lifting platform (22) is arranged in the middle of the support frame (21) to be lifted in a vertical direction; the two lifting components (23) are respectively arranged on both sides of the support frame (21) to drive the lifting platform (22) to lift.

6. The automatic double-layer glass printing dust-free baking line according to claim 5 is characterized by: The lifting assembly (23) comprises a second screw rod (231) and a third motor (232); the second screw rod (231) is rotatably arranged on the support frame (21) along the vertical direction; the output shaft of the third motor (232) arranged on the support frame (21) is connected to one end of the second screw rod (231); and the two ends of the lifting platform (22) are respectively threadedly connected to the second screw rods (231) of the two lifting assemblies (23).

7. The automatic double-layer glass printing dust-free baking line according to claim 5 is characterized by: The feeding mechanism (2) comprises a first feeding assembly (24), the first feeding assembly (24) comprises a second rotating shaft (241) and a second roller (242), a plurality of the second rotating shafts (241) are arranged on the lifting platform (22) at intervals along the baking line direction, the second rotating shaft (241) is rotatably arranged and its axis is perpendicular to the baking line direction, and a plurality of the second rollers (242) are arranged on the second rotating shaft (241) at intervals and fixedly.

8. The automatic double-layer glass printing dust-free baking line according to claim 1 is characterized by: The furnace body (3) comprises a feeding section (33) arranged at one end of the heating section (31) opposite to the cooling section (32); an upper channel (301) and a lower channel (302) penetrate the feeding section (33); and a conveyor belt (303) for feeding is horizontally arranged in the upper channel (301) and the lower channel (302) along the baking line direction.

9. The automatic double-layer glass printing dust-free baking line according to claim 8 is characterized by: The side walls of the upper channel (301) and the lower channel (302) of the feeding section (33) are provided with an automatic tensioning mechanism (6), and the automatic tensioning mechanism (6) comprises a second cylinder (61) and an anti-deviation roller (62), wherein the second cylinder (61) is arranged on the inner wall of the upper channel (301) or the lower channel (302), and the conveyor belt (303) is wound around the anti-deviation roller (62), and one end of the telescopic rod of the second cylinder (61) is connected to the anti-deviation roller (62) for correcting the deflection of the conveyor belt (303).

10. The automatic double-layer glass printing dust-free baking line according to claim 8 is characterized in that: A heating structure (8) is arranged in the upper channel (301) and the lower channel (302) of the heating section (31), and the heating structure (8) comprises a hot air blower (81) arranged at the top of the upper channel (301) and electric heating pipes (82) respectively arranged in the upper channel (301) and the lower channel (302), and the electric heating pipes (82) are installed above the conveyor belt (303) through a detachable bracket.

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