A combined drying tunnel for coating line

Abstract

The present invention relates to the field of coating lines, and in particular to a combined drying tunnel for coating lines, comprising a base, on which drying tunnel one, drying tunnel two, and a discharging conveyor are sequentially connected, wherein an electric drive conveyor belt is arranged in the drying tunnel one, one end of the electric drive conveyor belt is installed with a material unloading rocker arm and extends into the drying tunnel two, and a rotating baking plate is installed in the drying tunnel two, and a plurality of self-rotating plates are rotatably installed on the upper part of the rotating baking plate, and the bottom of the self-rotating plates are connected with planetary gears, and each planetary gear is meshed and connected with a fixed gear arranged at the bottom of the rotating baking plate. In the present invention, the workpiece is dried through the drying tunnel one, and enters the drying tunnel two through the rotating baking plate for rotary drying, wherein the rotating baking plate cooperates with the self-rotating plate, the planetary gears, and the fixed gears to realize the self-rotating plate, and then drives the workpiece to rotate and dry, ensuring that all parts of the workpiece can be fully dried, avoiding the problem of uneven drying that may exist in the traditional drying tunnel, effectively improving the drying operation efficiency, and ensuring the quality of the finished workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of coating lines, and in particular to a combined drying tunnel for coating lines. Background Art

[0002] The working principle of the coating line is to place the workpiece to be coated on the conveying mechanism, and then take it to the pre-treatment station through the conveying mechanism for strict surface treatment to ensure that the surface quality meets the coating requirements. Then, the workpiece is sent to the spray painting room and accurately coated under the control of the spray painting robot. After the spray painting is completed, the product enters the drying tunnel for curing and can be off the line after drying.

[0003] In order to improve the spraying quality, some existing coating lines implement multiple coating and drying operations, that is, a drying operation is performed after coating one side of the workpiece, and a secondary coating and drying operation is performed afterwards, which can effectively ensure the stability and consistency of product quality. Although the current traditional coating line drying tunnel can meet the basic drying needs, in actual use, the workpiece is mostly stationary when entering the drying tunnel, and the contact method between the workpiece and the drying heat source is relatively single, resulting in incomplete and insufficient drying of local parts of the workpiece, affecting the drying efficiency, and the final quality of the workpiece cannot be guaranteed. Therefore, there is an urgent need for a combined drying tunnel for a coating line. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a combined drying tunnel for a coating line.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A combined drying tunnel for a coating line comprises a base, wherein a drying tunnel 1, a drying tunnel 2 and a material discharging conveying tunnel are sequentially connected and arranged on the upper part of the base, wherein an electric drive conveying belt is arranged in the drying tunnel 1, a material discharging rocker arm is arranged at one end of the electric drive conveying belt and extends into the drying tunnel 2, a rotating drying plate is arranged in the drying tunnel 2, a plurality of self-rotating plates are rotatably arranged on the upper part of the rotating drying plate, a planetary gear is connected to the bottom of the self-rotating plate, and each planetary gear is meshed and connected with a fixed gear arranged below the rotating drying plate;

[0007] A driving motor is provided at the bottom of the second baking tunnel, and an output end of the driving motor extends into a transmission cabin provided inside the base and is fixedly connected with a driving gear, one side of the driving gear is connected with a transmission gear plate through tooth groove meshing and synchronously transmits and connects with a hollow shaft, the bottom end of the hollow shaft is rotatably mounted on the bottom wall of the transmission cabin, and the top end extends out of the base and is fixedly connected with the bottom wall of the rotating baking plate, wherein a fixed cylinder is rotatably connected to the bottom of the rotating baking plate, the bottom end of the fixed cylinder is fixedly mounted on the base, and a hollow shaft is rotatably mounted in the fixed cylinder.

[0008] In addition, a preferred structure is that a control panel is provided outside the second drying tunnel, and the control panel is electrically connected to the electric drive conveyor belt, the drive motor, the cylinder part, and the hot drying mechanism.

[0009] In addition, a preferred structure is that a rotating seat 1 is installed at the bottom of one side of the electric drive conveyor belt, a pair of unloading rocker arms are rotatably installed on the outer side of the rotating seat 1 through a rotating shaft, a plurality of guide rollers are rotatably connected between the unloading rocker arms, and a rotating baking plate is correspondingly arranged at the oblique lower side of the unloading rocker arms;

[0010] A torsion spring is provided at the rotation connection between the unloading rocker arm and the rotating seat, and the torsion spring provides a torsion force for the unloading rocker arm to always rotate obliquely upward.

[0011] In addition, a preferred structure is that a cylinder mounting frame is passed through the middle of the hollow shaft, the bottom of the cylinder mounting frame is fixedly installed on the bottom end of the transmission cabin, and the top end extends out of the hollow shaft and the rotating baking plate in sequence and is fixedly connected to the bottom end of the cylinder member, the cylinder member is installed in a through hole set in the middle of the rotating baking plate, and a certain gap is left with the inner wall of the through hole, wherein the through hole is connected to the hollow shaft.

[0012] In addition, a preferred structure is that an arc frame is installed at the bottom end of the unloading rocker arm through a lower support plate, a rotating baking plate is provided obliquely above the arc frame, and a plurality of pressing blocks are installed at the bottom of the rotating baking plate. When the pressing blocks are in squeeze contact with the arc frame, the unloading rocker arm is pressed down and rotated around the rotating seat.

[0013] In addition, a preferred structure is that a fixed gear is installed on the upper part of the fixed cylinder, arc grooves are correspondingly opened on both sides of the fixed gear, no tooth grooves are arranged in the arc grooves, and the inner wall of the arc grooves is a magnetic wall.

[0014] In addition, a preferred structure is that the outer side of the fixed gear is connected to a plurality of planetary gears through tooth-groove meshing transmission, a pair of magnetic blocks are provided in the middle of the upper end of each planetary gear, and each magnetic block is magnetically connected to the corresponding magnetic wall.

[0015] In addition, a preferred structure is that a plurality of mounting grooves are provided on the upper part of the rotating baking plate, a through hole is provided in the middle of the mounting groove, a spring telescopic rod is rotatably installed in the through hole, a planetary gear is fixedly connected to the bottom end of the spring telescopic rod, and the top end passes through the mounting plate and is fixedly connected to the bottom end of the rotating plate;

[0016] The mounting plate and the rotating plate are both rotatably mounted in the mounting groove, and a plurality of mounting openings are provided on the upper part of the rotating plate, and limiting grooves are provided on both sides of the inner walls of the mounting openings, and an L-shaped plate is installed on one side of the limiting groove through a limiting column, and the middle part of the L-shaped plate is rotatably connected to the rotating seat 2, wherein the rotating seat 2 is fixedly mounted on the upper part of the mounting plate, and a limiting roller is installed on the other end of the L-shaped plate, and the limiting roller is fitted in the mounting opening in a natural state.

[0017] In addition, a preferred structure is that a heat drying mechanism is provided in both the first drying channel and the second drying channel.

[0018] The beneficial effects of the present invention are:

[0019] In the present invention, the workpiece enters the first drying tunnel through the conveying mechanism for preliminary drying treatment, and in the process of continuous conveying, enters the second drying tunnel through the rotating drying plate for more comprehensive rotary drying operation, wherein the rotating drying plate cooperates with the rotating plate, the planetary gear, and the fixed gear to realize the self-rotation operation of the rotating plate, thereby driving the function of rotary drying of the workpiece, ensuring that the workpiece is evenly heated as it rotates in the drying tunnel, ensuring that all parts of the workpiece can be fully dried, avoiding the problem of uneven drying that may exist in the traditional drying tunnel, effectively improving the drying operation efficiency, and ensuring the quality of the workpiece finished product.

[0020] At the same time, during the rotation of the rotating drying plate, the arc frame arranged at the bottom of the unloading rocker arm is squeezed and pressed down by the pressing block, so that the workpiece is guided into the rotating drying plate for loading due to the influence of the inclination. This process is highly stable and orderly, ensuring that each workpiece can maintain a precise and stable state during the unloading operation, thereby fully guaranteeing the stability and consistency of the entire drying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the external structure of a combined drying tunnel for a coating line proposed by the present invention;

[0022] Figure 2 This is a cross-sectional view of the internal structure of a combined drying oven for a coating line proposed by the present invention;

[0023] Figure 3 Schematic diagram of the electric drive conveyor belt connection structure proposed by the present invention Figure 1 ;

[0024] Figure 4 Schematic diagram of the electric drive conveyor belt connection structure proposed by the present invention Figure 2 ;

[0025] Figure 5 This is a schematic diagram of the structure of the unloading rocker arm proposed by the present invention;

[0026] Figure 6 This is a schematic diagram of the docking of the unloading rocker arm and the rotating baking plate proposed in the present invention;

[0027] Figure 7 This is a schematic diagram of the bottom structure of the rotating baking tray proposed by the present invention;

[0028] Figure 8 This is an exploded schematic diagram of the rotating baking plate connection structure proposed by the present invention;

[0029] Fig. 9This is a schematic diagram of the arc frame and the pressing block docking structure proposed by the present invention;

[0030] Fig.10 This is a schematic diagram of the transmission structure of the rotating baking plate proposed by the present invention;

[0031] Fig.11 This is a schematic diagram of the external structure of the fixed gear proposed by the present invention;

[0032] Fig.12 This is a schematic diagram of the planetary gear docking structure proposed by the present invention;

[0033] Fig.13 A cross-sectional view of the rotating disk connection structure proposed by the present invention;

[0034] Fig.14 This is a schematic plan view of the self-rotating disk connection structure proposed by the present invention;

[0035] Fig.15 This is a schematic diagram of the installation structure of the limiting roller proposed in the present invention.

[0036] In the figure: 1, base; 2, drying channel 1; 3, drying channel 2; 4, discharge conveyor; 5, electric drive conveyor belt; 6, control panel; 7, hot drying mechanism; 8, rotating drying plate; 81, self-rotating plate; 9, cylinder parts; 91, cylinder mounting frame; 10, unloading rocker arm; 11, guide roller; 12, lower support plate; 13, arc frame; 14, rotating shaft; 15, rotating seat 1; 16, pressure block; 17, torsion spring; 18, driving motor; 1 81. driving gear; 19. fixing cylinder; 20. fixing gear; 201. arc groove; 202. magnetic wall; 21. planetary gear; 22. spring telescopic rod; 23. magnetic block; 24. mounting plate; 25. mounting groove; 26. limiting roller; 27. transmission gear plate; 271. hollow shaft; 28. transmission cabin; 29. ​​mounting port; 30. limiting groove; 31. L-shaped plate; 311. limiting column; 32. rotating seat II. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] Reference Figure 1-2 A combined drying tunnel for a coating line comprises a base 1, a drying tunnel 1 2, a drying tunnel 2 3, and a discharging conveyor 4 are respectively arranged on the upper part of the base 1 and are interconnected, wherein the inner walls of the drying tunnels 1 2 and 2 3 are provided with a plurality of hot drying mechanisms 7, and an electric drive conveyor belt 5 is arranged in the middle of the drying tunnel 1 2, and a rotating drying plate 8 is arranged between the electric drive conveyor belts 5 on both sides, and the rotating drying plate 8 is rotatably installed in the drying tunnel 2 3 by a driving motor 18;

[0039] Furthermore, a control panel 6 is provided on the outer side of the second drying tunnel 3 , and the control panel 6 is electrically connected to the electric drive conveyor belt 5 , the drive motor 18 , the cylinder part 9 , and the hot drying mechanism 7 .

[0040] Reference Figure 3-5 A material unloading rocker arm 10 is provided on the side of the electric-driven conveyor belt 5 facing the drying tunnel 2 3, and a plurality of guide rollers 11 are rotatably installed in the middle of the material unloading rocker arm 10. Each guide roller 11 is arranged in sequence at equal intervals and is installed at an angle, and in a natural state, each guide roller 11 is parallel to the electric-driven conveyor belt 5.

[0041] A lower supporting plate 12 is installed at the bottom of the unloading rocker arm 10 , an arc frame 13 is installed at one end of the lower supporting plate 12 , and an arc-shaped protrusion is provided in the middle of the arc frame 13 .

[0042] Furthermore, a rotating seat 15 is installed at the bottom of one end of the electric-driven conveyor belt 5, and a discharge rocker arm 10 is rotatably installed at both ends of the rotating seat 15 through a rotating shaft 14, wherein a torsion spring 17 is provided at the rotating connection between the rotating shaft 14 and the rotating seat 15, and the torsion spring 17 provides a torque force for the discharge rocker arm 10 to always keep it upward.

[0043] Reference Figure 6 , 9 One end of the unloading rocker arm 10 is connected with the outer side of the rotating baking plate 8, wherein a plurality of pressing blocks 16 are arranged at the bottom of the rotating baking plate 8, the pressing blocks 16 are arc-shaped protrusions, and the pressing blocks 16 are matched with the arc-shaped frame 13 arranged at the bottom of the unloading rocker arm 10, and during the rotation of the rotating baking plate 8, the pressing blocks 16 are squeezed and contacted with the upper wall of the arc-shaped frame 13, and drive the unloading rocker arm 10 to press and rotate downward toward one side of the rotating baking plate 8.

[0044] Reference Figure 7-8 , 10-14, a transmission cabin 28 is provided on the base 1 below the drying channel 2 3, a hollow shaft 271 is rotatably installed in the middle of the transmission cabin 28, the top of the hollow shaft 271 is fixedly connected to the bottom of the rotating baking plate 8, wherein the bottom end of the hollow shaft 271 is rotatably installed at the bottom end of the transmission cabin 28, and a transmission gear disc 27 is provided on the outer side of the bottom of the hollow shaft 271, one side of the transmission gear disc 27 is connected with a driving gear 181 through tooth groove meshing, the driving gear 181 is drivingly connected to the output end of the driving motor 18, and the driving motor 18 is installed on one side of the base 1.

[0045] Furthermore, a fixed cylinder 19 is arranged outside the hollow shaft 271 , and the fixed cylinder 19 is fixedly installed on the upper part of the base 1 and sleeved on the outer side of the hollow shaft 271 , wherein the upper end of the fixed cylinder 19 is rotatably connected to the bottom end of the rotating baking plate 8 .

[0046] A fixed gear 20 is installed on the upper part of the fixed cylinder 19 , and arc grooves 201 are opened on both sides of the fixed gear 20 . The arc grooves 201 correspond to the positions of the drying channel 2 and the discharge conveying channel 4 respectively, and the inner wall of the arc groove 201 is a magnetic wall 202 .

[0047] Furthermore, a plurality of mounting grooves 25 are provided on the upper portion of the rotating baking plate 8, a through hole is provided in the middle portion of each mounting groove 25, a spring telescopic rod 22 is rotatably installed in the through hole through a bearing member, the telescopic end of the spring telescopic rod 22 extends out of the upper portion of the rotating baking plate 8 and passes through the mounting plate 24 and is connected to the self-rotating plate 81, the self-rotating plate 81 and the mounting plate 24 are both rotatably installed in the mounting grooves 25, wherein a plurality of mounting openings 29 are provided on the outer side of the self-rotating plate 81, and a limiting roller 26 is limitedly installed in the mounting openings 29.

[0048] Among them, a planetary gear 21 is installed at the bottom of the spring telescopic rod 22, one end of the planetary gear 21 is connected to the fixed gear 20 through tooth groove engagement, and a pair of magnetic blocks 23 are installed in the middle of the upper end of the planetary gear 21, and the magnetic blocks 23 are magnetically connected to the magnetic wall 202 arranged on the outside of the fixed gear 20.

[0049] Furthermore, a cylinder mounting frame 91 is fixedly mounted on the bottom wall of the transmission cabin 28 , and the upper end of the cylinder mounting frame 91 passes through the hollow shaft 271 and the fixing cylinder 19 in sequence and extends into the middle of the rotating baking plate 8 , and is fixedly connected to the bottom end of the cylinder member 9 .

[0050] The cylinder member 9 is installed in a through hole in the middle of the rotating baking plate 8, the through hole corresponds to the hollow shaft 271, and a certain gap is left between the cylinder member 9 and the inner wall of the through hole, wherein the telescopic end of the cylinder member 9 faces the side of the discharge conveyor 4.

[0051] Reference Figure 6 , 13 -15, a plurality of mounting openings 29 are provided on the outer side of the rotating disk 81, and a limiting groove 30 is provided on the inner wall of the mounting opening 29, and a limiting column 311 is slidingly installed in the limiting groove 30, and the limiting column 311 is installed on both sides of the L-shaped plate 31, and the bottom of the L-shaped plate 31 is rotatably connected to the rotating seat 2 32, wherein the rotating seat 2 32 is fixedly installed on the upper end of the mounting disk 24 arranged below the rotating disk 81, and a limiting roller 26 is installed at the other end of the L-shaped plate 31, and the limiting roller 26 fits in the mounting opening 29 in a natural state.

[0052] In this embodiment, the workpiece to be dried enters the drying tunnel 2 through the electric-driven conveyor belt 5, and is subjected to preliminary heat drying treatment by the heat drying mechanism 7 arranged in the drying tunnel 2. As the electric-driven conveyor belt 5 continues to convey, the workpiece gradually moves to the unloading rocker arm 10 arranged on one side of the electric-driven conveyor belt 5, and is supported by a plurality of guide rollers 11 arranged on the unloading rocker arm 10.

[0053] Synchronously, the driving motor 18 arranged inside the second baking tunnel 3 runs and drives the driving gear 181 connected thereto to rotate, and the driving gear 181 rotates and meshes with the driving gear plate 27 on one side of the transmission to drive the hollow shaft 271 to rotate, and the hollow shaft 271 rotates to synchronously drive the rotating baking plate 8 to rotate. During the rotation of the rotating baking plate 8, the self-rotating plate 81 arranged on the rotating baking plate 8 rotates and passes through a place of the unloading rocker arm 10. At this time, the pressing block 16 arranged at the bottom of the rotating baking plate 8 is gradually pressed and contacted with the arc frame 13 arranged at the bottom of the unloading rocker arm 10, and since both are arranged in an arc shape, during the gradual pressing and contacting process between the two, the unloading rocker arm 10 is pressed and rotated around the rotating seat 1 15 under the downward pressure of the pressing block 16. At this time, the workpiece placed in the middle of the unloading rocker arm 10 is affected by the inclination of the rocker arm, slowly tilts downward and moves onto the rotating baking plate 8, and finally moves to the self-rotating plate 81 arranged on the rotating baking plate 8.

[0054] During this process, when the rotating baking plate 8 is rotated 90 degrees by the driving motor 18, that is, when the rotating plate 81 is docked with the unloading rocker arm 10, the driving motor 18 is in an intermittent state and does not operate.

[0055] Next, the workpiece presses down the rotating disk 81 due to its own weight, and the rotating disk 81 descends to a certain extent through the spring telescopic rod 22, and presses down the L-shaped plate 31 through the limiting groove 30 during the downward movement. One end of the L-shaped plate 31 moves downward under the downward pressure, and the setting of the rotating seat 2 32 makes the limiting roller 26 at the other end tilt up, and preliminarily limits the outer wall of the workpiece placed on the rotating disk 81 to prevent it from shifting or falling during transportation.

[0056] Then, the driving motor 18 runs again to drive the rotating baking plate 8 to rotate. At this time, the planetary gear 21 connected to the bottom of the rotating plate 81 is meshed with the fixed gear 20 arranged under the rotating baking plate 8. During the continuous rotation, the planetary gear 21 rotates to drive the rotating plate 81 to rotate. At this time, the workpiece placed on the rotating plate 81 rotates at a uniform speed and is in full contact with the heat source in the baking tunnel.

[0057] When the workpiece rotates to a place on the discharge conveyor 4, the rotating disc 81 on the other side performs the loading operation. At this time, the cylinder part 9 arranged in the middle of the rotating drying plate 8 is in operation, and the telescopic rod of the cylinder part 9 extends out and ejects the dried workpiece. At this time, the dried workpiece is separated from the rotating disc 81 by the top pressure, and moves and falls to the discharge conveyor 4 for discharge and transportation. At this time, there is no weight of the workpiece on the rotating disc 81, and its limit roller 26 is reset.

[0058] Furthermore, a pair of arc grooves 201 with magnetic walls 202 are correspondingly opened on both sides of the fixed gear 20. During the rotation of the rotating baking plate 8, the planetary gear 21 connected to the bottom of the rotating plate 81 is always engaged with the fixed gear 20, and when it moves to a place of the unloading rocker arm 10 for docking, the planetary gear 21 is separated from the tooth groove of the fixed gear 20 and is located in a place of the arc groove 201. Under the action of magnetism, the magnetic attraction block 23 arranged on the upper part of the planetary gear 21 will be magnetically attracted to the magnetic wall 202, and under the action of magnetism, the planetary gear 21 is driven to perform a correction rotation at a certain angle to meet the smoothness of subsequent operation.

[0059] Next, when the rotating baking plate 8 rotates again, the planetary gear 21 is affected by the magnetic attraction to be corrected at a certain angle, and finally meshes with the first tooth groove arranged outside the arc groove 201 , thereby satisfying the self-rotation operation of the rotating plate 81 .

[0060] Among them, in actual use, when the unloading rocker arm 10 is pressed down and rotated, the rotating shaft 14 rotates to drive the torsion spring 17 to twist to generate a return torque. After the unloading rocker arm 10 is separated from the downward pressure of the pressing block 16, the torsion spring 17 resets to drive the unloading rocker arm 10 to reset.

[0061] In actual application, the hollow shaft 271 rotates inside the fixing cylinder 19 without interfering with the fixing cylinder 19 .

[0062] In actual application, the plurality of pressing blocks 16 disposed at the bottom of the rotating baking plate 8 correspond to the positions of the rotating plate 81 .

[0063] Among them, in actual application, in the gap stage of the driving motor 18, that is, the process of the unloading rocker arm 10 guiding the workpiece to the rotating baking plate 8, on the other side of the discharge conveyor 4, the cylinder part 9 is extended to push the workpiece onto the discharge conveyor 4.

[0064] Among them, in actual application, during the pressing down process of the rotating disk 81, the rotating disk 81 presses down the limiting column 311 and the L-shaped plate 31 through the limiting groove 30, wherein the limiting column 311 moves in the limiting groove 30, and the L-shaped plate 31 rotates to one side, and correspondingly, the limiting roller 26 at the other end of the L-shaped plate 31 is tilted and limits the workpiece on the rotating disk 81.

[0065] Among them, it is worth noting that the spring telescopic rod 22 specifically includes a main and secondary cylinders that are socketed with each other, and the two are connected by a spring to achieve the function of telescopic reset. Its specific principle and structure are already existing technologies, and no further elaboration is made here. In the present technical solution, the main cylinder (fixed end) of the spring telescopic rod 22 is rotatably mounted on the bottom of the rotating baking plate 8 through a bearing member, and the internal secondary cylinder (telescopic rod) passes through the rotating baking plate 8 and the mounting plate 24, and is fixedly connected to the bottom end of the rotating plate 81. Further, the mounting plate 24 is rotatably mounted in the mounting groove 25, and is connected to the rotating plate 81 under the setting of components such as the rotating seat 22 and the L-shaped plate 31, and rotates with the rotation of the rotating plate 81. In addition, although the spring telescopic rod 22 passes through the middle of the mounting plate 24, the mounting plate 24 is not directly connected to the spring telescopic rod 22 to avoid affecting the telescopic function of the rotating plate 81 and the telescopic rod.

[0066] It is worth noting that the discharge conveyor 4 is still provided with a conveyor belt mechanism identical to the electric drive conveyor belt 5 to convey the dried workpieces, and the horizontal height of the conveyor belt is lower than the rotating drying plate 8 to facilitate discharge.

[0067] It is worth noting that the electrically driven conveyor belt 5 is specifically a conveyor belt driven by a motor, and its specific structure and principle are common technical knowledge well known to those skilled in the art, so no further elaboration is given here.

[0068] In the present invention, the workpiece enters the drying tunnel 1 2 through the conveying mechanism for preliminary drying treatment, and in the process of continuous conveying, enters the drying tunnel 2 3 through the rotating drying plate 8 for more comprehensive rotary drying operation, wherein the rotating drying plate 8 cooperates with the rotating plate 81, the planetary gear 21, and the fixed gear 20 to realize the self-rotation operation of the rotating plate 81, thereby driving the function of rotary drying of the workpiece, ensuring that the workpiece is evenly heated as it rotates in the drying tunnel, ensuring that all parts of the workpiece can be fully dried, avoiding the problem of uneven drying that may exist in the traditional drying tunnel, effectively improving the drying operation efficiency, and ensuring the quality of the workpiece finished product.

[0069] At the same time, during the rotation of the rotating baking plate 8, the arc frame 13 arranged at the bottom of the unloading rocker arm 10 is squeezed and pressed down by the pressing block 16, so that the workpiece is guided into the rotating baking plate 8 for loading due to the influence of the inclination. This process has a high degree of stability and orderliness, ensuring that each workpiece can maintain a precise and stable state during the unloading operation, thereby comprehensively ensuring the stability and consistency of the entire drying process.

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A combined drying tunnel for a coating line, comprising a base (1), characterized in that: The upper part of the base (1) is connected with a drying channel 1 (2), a drying channel 2 (3), and a discharge conveyor channel (4) in sequence, wherein an electric drive conveyor belt (5) is arranged in the drying channel 1 (2), one end of the electric drive conveyor belt (5) is provided with a discharge rocker arm (10) and extends into the drying channel 2 (3), a rotating baking plate (8) is installed in the drying channel 2 (3), a plurality of self-rotating plates (81) are rotatably installed on the upper part of the rotating baking plate (8), the bottom of the self-rotating plate (81) is connected with a planetary gear (21), and each planetary gear (21) is meshed and connected with a fixed gear (20) arranged below the rotating baking plate (8); A driving motor (18) is provided at the bottom of the second baking tunnel (3); the output end of the driving motor (18) extends into a transmission cabin (28) provided inside the base (1) and is fixedly connected to a driving gear (181); one side of the driving gear (181) is connected to a transmission gear plate (27) through tooth groove meshing and is synchronously connected to a hollow shaft (271); the bottom end of the hollow shaft (271) is rotatably mounted on the bottom wall of the transmission cabin (28), and the top end extends out of the base (1) and is fixedly connected to the bottom wall of the rotating baking plate (8); a fixed cylinder (19) is rotatably connected to the bottom of the rotating baking plate (8); the bottom end of the fixed cylinder (19) is fixedly mounted on the base (1), and a hollow shaft (271) is rotatably mounted in the fixed cylinder (19); The bottom end of the unloading rocker arm (10) is mounted with an arc frame (13) through a lower support plate (12); a rotating baking plate (8) is arranged obliquely above the arc frame (13); a plurality of pressing blocks (16) are mounted at the bottom of the rotating baking plate (8); when the pressing blocks (16) are in compression contact with the arc frame (13), the unloading rocker arm (10) is pressed and rotated around a rotating seat (15); A fixed gear (20) is installed on the upper part of the fixed cylinder (19), and arc-shaped grooves (201) are correspondingly opened on both sides of the fixed gear (20), no tooth grooves are arranged in the arc-shaped groove (201), and the inner wall of the arc-shaped groove (201) is a magnetic wall (202); The outer side of the fixed gear (20) is connected to a plurality of planetary gears (21) through tooth-slot meshing transmission, a pair of magnetic blocks (23) is provided at the middle of the upper end of each planetary gear (21), and each magnetic block (23) is magnetically connected to the magnetic wall (202) in a corresponding manner; The upper part of the rotating baking plate (8) is provided with a plurality of mounting grooves (25), the middle part of the mounting groove (25) is provided with a through hole, a spring telescopic rod (22) is rotatably mounted in the through hole, the bottom end of the spring telescopic rod (22) is fixedly connected to a planetary gear (21), and the top end passes through the mounting plate (24) and is fixedly connected to the bottom end of the rotating plate (81); The mounting plate (24) and the self-rotating plate (81) are both rotatably mounted in the mounting groove (25), and a plurality of mounting openings (29) are provided on the upper part of the self-rotating plate (81), and limiting grooves (30) are provided on both sides of the inner wall of the mounting openings (29), and an L-shaped plate (31) is mounted on one side of the limiting groove (30) through a limiting column (311), and the middle part of the L-shaped plate (31) is rotatably connected to the second rotating seat (32), wherein the second rotating seat (32) is fixedly mounted on the upper part of the mounting plate (24), and a limiting roller (26) is mounted on the other end of the L-shaped plate (31), and the limiting roller (26) is fitted and mounted in the mounting opening (29) in a natural state.

2. A combined drying tunnel for a coating line according to claim 1, characterized in that: A control panel (6) is arranged outside the second drying tunnel (3), and the control panel (6) is electrically connected to the electric drive conveyor belt (5), the drive motor (18), the cylinder part (9), and the hot drying mechanism (7).

3. The combined drying tunnel for a coating line according to claim 1, characterized in that: A rotating seat (15) is installed at the bottom of one side of the electric drive conveyor belt (5); a pair of unloading rocker arms (10) are rotatably installed on the outer side of the rotating seat (15) via a rotating shaft (14); a plurality of guide rollers (11) are rotatably connected between the unloading rocker arms (10); and a rotating baking plate (8) is correspondingly arranged obliquely below the unloading rocker arms (10); A torsion spring (17) is provided at the rotation connection between the unloading rocker arm (10) and the rotating seat (15), and the torsion spring (17) provides a torsion force for the unloading rocker arm (10) to always rotate obliquely upward.

4. The combined drying tunnel for a coating line according to claim 1, characterized in that: A cylinder mounting frame (91) is inserted through the middle of the hollow shaft (271); the bottom of the cylinder mounting frame (91) is fixedly mounted on the bottom end of the transmission cabin (28); and the top of the cylinder mounting frame extends out of the hollow shaft (271) and the rotating baking plate (8) in sequence and is fixedly connected to the bottom end of the cylinder member (9); the cylinder member (9) is mounted in a through hole provided in the middle of the rotating baking plate (8) and leaves a certain gap with the inner wall of the through hole, wherein the through hole is connected to the hollow shaft (271).

5. The combined drying tunnel for a coating line according to claim 1, characterized in that: The first drying channel (2) and the second drying channel (3) are both provided with a heat drying mechanism (7).

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