A mesh belt furnace conveyor belt correction device and method

Abstract

This invention belongs to the field of mesh belt furnace technology and discloses a mesh belt furnace conveyor belt correction device and method, including a mesh belt furnace body, on which a conveyor belt is provided. Laser displacement sensors for monitoring conveyor belt deviation are fixedly connected to both sides of one end of the mesh belt furnace body. A correction part is provided on the mesh belt furnace body. By using laser displacement sensors to monitor the edge position of the conveyor belt in real time, and cooperating with a PLC control system to construct a closed-loop control system, the correction action can be triggered in a timely manner when the conveyor belt shows a deviation trend but has not experienced serious deviation. This overcomes the lag defect of traditional passive correction. Through a rotating pressing structure, the cone rod is precisely engaged with the conveyor belt. The continuous driving force generated by the rotation of the turntable drives the arc-shaped moving plate to move in a specific direction, realizing the active traction and reset of the deviated conveyor belt. The correction direction and amplitude are controllable, and the reset process does not interfere with the normal material conveying operation of the conveyor belt, further improving the stability of equipment operation.

Description

Technical Field

[0001] This invention belongs to the field of mesh belt furnace technology, specifically a mesh belt furnace conveyor belt correction device and method. Background Technology

[0002] A mesh belt furnace is an industrial heat treatment equipment that continuously transports workpieces via a high-temperature resistant mesh belt. It is mainly used for sintering powder metallurgy products, reducing metal powders, and pre-firing, firing, or heat treatment processes of electronic products in a protective atmosphere or air. Its core structure includes the furnace body, mesh belt drive system, and temperature control system. The furnace body is divided into functional zones such as the feeding section, pre-firing section, and sintering section.

[0003] In actual production, conveyor belts need to carry workpieces at high speed for extended periods, and are prone to deviation due to various factors. These include uneven stress caused by manufacturing precision deviations of the conveyor belt itself, parallelism errors in the installation of the drive and driven rollers, and unilateral impact forces caused by eccentric placement of workpieces. All of these factors can cause the conveyor belt to deviate and move during continuous material conveying. The friction caused by deviation will accelerate the wear of the conveyor belt and rollers. In severe cases of deviation, the conveyor belt may fall out of the support range of the drive or driven rollers, causing equipment downtime and other hazards. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention provides a conveyor belt correction device and method for a mesh belt furnace.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mesh belt furnace conveyor belt correction device, comprising a mesh belt furnace body, a conveyor belt mounted on the mesh belt furnace body, and laser displacement sensors for monitoring conveyor belt offset fixedly connected to both sides of one end of the mesh belt furnace body. The mesh belt furnace body is provided with a correction section, which includes hollow rollers capable of rotating and fitting with both ends of the conveyor belt. A slot is formed on one end of each of the two hollow rollers, and an arc surface is slidably connected to each slot. The conveyor belt has multiple through grooves on its curved surface, and each set of grooves has a tapered rod slidably connected to its inner wall. Each set of tapered rods can intermittently engage with both ends of the conveyor belt. A rotary transmission structure is provided between the two hollow rollers, and a rotary pressing structure is provided between each set of tapered rods and the two hollow rollers to control the extension and retraction of each set of tapered rods. A set of oppositely symmetrical piston negative pressure structures is also provided between the rotary pressing structure and the hollow rollers.

[0006] Preferably, the rotary transmission structure includes bearings fixedly connected to the roller bodies on both sides of the two hollow rollers, and the roller bodies of the two hollow rollers rotate through the mesh belt furnace body, while the outer rings of the two sets of bearings are fixedly connected to the inner cavity plate of the mesh belt furnace body.

[0007] A motor is fixedly connected to one side of the hollow roller, and a frame is fixedly connected to the bottom outer wall of the motor. The frame is fixedly connected to the outer wall of the mesh belt furnace body, and a synchronous belt is fixedly connected to one side of the two hollow rollers.

[0008] Preferably, the rotating pressing structure includes two sets of T-shaped locking blocks fixedly connected to the arc-shaped moving plate. The inner wall of the hollow roller is provided with a T-shaped groove that can slide and engage with the two sets of T-shaped locking blocks. Arc-shaped baffles are slidably connected to both sides of the hollow roller. Arc-shaped grooves are provided in both sides of the hollow roller. The inner walls of the two arc-shaped grooves are respectively slidably connected to the two arc-shaped baffles. Two springs are fixedly connected between the other end of the two arc-shaped baffles and the inner walls of both sides of the hollow roller.

[0009] Preferably, a micro motor is fixedly connected to the inner wall of one end of the hollow roller, a threaded rod is fixedly connected to the shaft of the micro motor, two turntables are threadedly connected to the rod, and an inclined abutment is slidably connected to the discs of the two turntables.

[0010] Preferably, the other end plate of the inclined plate is fixedly connected to the rods of multiple conical rods, and two springs are fixedly connected between the other end plate of the inclined plate and the inner wall of the arc-shaped moving plate. Two clamping plates are fixedly connected to one end plate of the inclined plate. The two clamping plates can intermittently fit and connect with the two turntables respectively, and the two clamping plates can also intermittently fit and connect with the threaded rod.

[0011] Preferably, the piston negative pressure structure includes a piston rod, a piston cylinder is slidably connected to the piston rod, a sleeve rod is fixedly connected to the outer wall of the piston cylinder, and the bottom end of the sleeve rod is fixedly connected to the inner wall of the hollow roller.

[0012] Preferably, an oil supply pipe is fixedly connected through the piston cylinder, the pipe body of the oil supply pipe is fixedly connected through the hollow roller body, an oil guide groove is opened through the side roller body of the hollow roller, and an L-shaped branch oil pipe is fixedly connected to each groove of the oil guide groove opened in the hollow roller.

[0013] Preferably, an oil extraction pipe is also fixedly connected through the piston cylinder, and an oil plug is tightly fitted into one end of the oil extraction pipe. Two springs are fixedly connected between the oil plug plate and the piston cylinder.

[0014] Preferably, an oil tank is fixedly connected through the other side of the spring three tube, and the bottom outer wall of the oil tank is fixedly connected to the bottom inner wall of the hollow roller.

[0015] A method for correcting the belt alignment of a mesh belt furnace, comprising the following steps:

[0016] Step 1: The mesh belt furnace body is running. The motor drives the hollow roller and the synchronous belt to rotate. During the rotation, the synchronous belt will drive another hollow roller to rotate synchronously. The rotation of the two hollow rollers will drive the conveyor belt to transport the workpiece material. When the conveyor belt is passively rotating and conveying material, the installed laser displacement sensor will monitor the rotation position of the conveyor belt on the hollow roller in real time. The detection direction of the laser displacement sensor is perpendicular to the edge of the conveyor belt. When the distance exceeds the preset threshold, a deviation signal is sent to the PLC control system.

[0017] Step 2: At that time, the PLC control system starts the micro motor inside the hollow roller, which drives the threaded rod to rotate. The rotating threaded rod will simultaneously drive the two turntables to rotate and move, which will have the effect of pressing and offsetting the inclined plate. At the same time, multiple cone rods will extend through the arc-shaped moving plate due to the pressure of the inclined plate. At the same time, the clamping plate and the threaded rod no longer contact each other. Multiple cone rods are inserted into the conveyor belt. During the continuous passive rotation of the turntable, when they come into contact with the clamping plate, the continuous moving force will indirectly drive the arc-shaped moving plate to move as a whole, which is used to correct the offset of the conveyor belt.

[0018] Step 3: During the passive rotation and movement of the two turntables, the two piston rods driven in real time will move horizontally within the corresponding piston cylinders, generating extrusion and suction forces within the cylinders. As a result, the oil in the piston cylinders will be extruded through the oil supply pipe into the oil guide groove. Subsequently, the oil in the oil guide grooves will be guided into the bearings through the L-shaped branch oil pipes for lubrication, ensuring the smoothness of the overall rotation. When suction forces are generated within the piston cylinders, the oil in the oil tank will be drawn through the oil extraction pipe and introduced into the piston cylinders. At the moment the suction force is generated, it will immediately cause the oil plug to detach from the opening of the oil extraction pipe, stretching the spring and causing it to deform. Then, when the lubricating oil is squeezed out, the oil plug will immediately seal the opening of the oil extraction pipe again, achieving unidirectional flow of the oil.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention employs a laser displacement sensor to monitor the edge position of the conveyor belt in real time, and constructs a closed-loop control system with a PLC control system. When the conveyor belt shows a tendency to deviate but has not seriously deviated, it can promptly trigger a correction action, overcoming the lag defect of traditional passive correction. Through a rotating pressing structure, the cone rod is precisely engaged with the conveyor belt, and the continuous driving force generated by the rotation of the turntable drives the arc-shaped moving plate to move in a specific direction, realizing the active traction and reset of the deviated conveyor belt. The correction direction and amplitude are controllable, and the reset process does not interfere with the normal material conveying operation of the conveyor belt, further improving the stability of equipment operation.

[0021] This invention utilizes a combined design of a piston negative pressure structure and a rotating pressure structure. The rotation of a turntable drives the reciprocating motion of the piston rod, generating alternating extrusion and suction forces within the piston cylinder. This achieves automatic suction and directional delivery of lubricating oil, precisely providing lubrication to bearing components. This design eliminates the need for an additional lubrication power source, synchronously driving the lubrication process through a correction mechanism.

[0022] This invention utilizes a detachable connection structure of T-shaped blocks and T-shaped grooves to enable rapid assembly and disassembly of the arc-shaped shift plate, facilitating workers' inspection and maintenance of the correction components within the roller body. Simultaneously, the oil tank is equipped with a T-shaped locking post-type oil replenishment structure, allowing for direct replenishment after the arc-shaped shift plate is removed, simplifying the lubrication and maintenance process and reducing labor intensity and maintenance costs. Furthermore, the sealing structure composed of the arc-shaped baffle and spring effectively prevents high-temperature dust from entering the hollow roller cavity, delaying component aging and extending equipment lifespan. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the mesh belt furnace body of the present invention;

[0025] Figure 3 This is a partial structural diagram of the correction section of the present invention;

[0026] Figure 4 For the present invention Figure 3 A magnified view of the structure at point A in the middle;

[0027] Figure 5 This is a partial cross-sectional structural diagram of the hollow roller of the present invention;

[0028] Figure 6 This is a schematic diagram of a partial structure of the oil pipeline of the present invention;

[0029] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at point B in the middle;

[0030] Figure 8This is a partial cross-section of the piston cylinder of the present invention, as well as a schematic diagram of the disassembled structure of the spring, oil plug, and oil extraction pipe.

[0031] In the picture:

[0032] 1. Mesh belt furnace body; 101. Conveyor belt; 102. Laser displacement sensor;

[0033] 2. Correction unit; 201. Hollow roller; 202. Bearing; 203. Motor; 204. Synchronous belt; 205. Arc-shaped shift plate; 206. T-shaped clamp; 207. T-shaped slide groove; 208. Arc-shaped baffle; 209. Arc-shaped slide groove; 210. Spring 1; 211. Miniature motor; 212. Threaded rod; 213. Turntable; 214. Inclined abutment plate; 215. Conical rod; 216. Spring 2; 217. Clamping plate; 218. Piston rod; 219. Piston cylinder; 220. Sleeve rod; 221. Oil delivery pipe; 222. Oil guide groove; 223. L-shaped branch oil pipe; 224. Oil extraction pipe; 225. Oil plug; 226. Spring 3; 227. Oil tank. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1 to 8 As shown, the present invention provides a conveyor belt correction device for a mesh belt furnace, including a mesh belt furnace body 1, a conveyor belt 101 mounted on the mesh belt furnace body 1, and laser displacement sensors 102 for monitoring the offset of the conveyor belt 101 fixedly connected to both sides of one end of the mesh belt furnace body 1. A correction part 2 is provided on the mesh belt furnace body 1, and the correction part 2 includes hollow rollers 201 that can be rotatably connected to both ends of the conveyor belt 101. A slot is opened on one end of each hollow roller 201, and an arc-shaped sliding plate 205 is slidably connected to each slot. Each of the arc-shaped moving plates 205 has multiple rod grooves through it, and each set of rod grooves has a tapered rod 215 that is slidably connected to its inner wall. Each set of tapered rods 215 can intermittently engage with both ends of the conveyor belt 101. A rotary transmission structure is provided between the two hollow rollers 201, and a rotary pressing structure is provided between each set of tapered rods 215 and the two hollow rollers 201 respectively to control the extension and retraction of each set of tapered rods 215. A set of oppositely symmetrical piston negative pressure structures is also provided between the rotary pressing structure and the hollow rollers 201.

[0036] Using the above scheme: The detection direction of the laser displacement sensor 102 is perpendicular to the edge of the conveyor belt 101. When the distance exceeds the preset threshold, a deviation signal is sent to the PLC control system. The PLC control system starts the micro motor 211 in the hollow roller 201, which drives the threaded rod 212 to rotate and the two turntables 213 to rotate and move, so as to achieve the effect of pressing and deflecting the inclined plate 214. At the same time, multiple cone rods 215 will extend through the arc-shaped moving plate 205 due to the compression of the inclined plate 214. At the same time, the clamping plate 217 and the threaded rod 212 no longer contact each other. Thus, multiple cone rods 215 will penetrate into the conveyor belt 101. During the continuous passive rotation of the turntable 213, when it contacts and presses against the clamping plate 217, the continuous moving force will indirectly drive the arc-shaped moving plate 205 to move as a whole, which is used to correct the deviation of the conveyor belt 101.

[0037] During the passive rotation of the two turntables 213, the two piston rods 218 driven by them will move horizontally within the corresponding piston cylinders 219, generating extrusion and suction forces within the cylinders. As a result, the oil in the piston cylinders 219 will be extruded through the oil supply pipe 221 and guided into the oil guide groove 222. Subsequently, the oil in the oil guide groove 222 will be guided into the bearing 202 through the L-shaped branch oil pipe 223, which will lubricate it and prevent jamming caused by long-term rotational friction within the plate, which would be detrimental to the smooth rotation of the hollow roller 201.

[0038] The rotary transmission structure includes bearings 202 fixedly connected to the roller bodies on both sides of two hollow rollers 201. The roller bodies of the two hollow rollers 201 rotate through the mesh belt furnace body 1. The outer rings of the two sets of bearings 202 are fixedly connected to the inner cavity plate of the mesh belt furnace body 1. A motor 203 is fixedly connected to one side of the roller body of one hollow roller 201. A frame is fixedly connected to the bottom outer wall of the motor 203. The frame is fixedly connected to the outer wall of the mesh belt furnace body 1. A synchronous belt 204 is fixedly connected to one side of the roller bodies of the two hollow rollers 201.

[0039] The above solution is adopted: such as Figure 2 As shown, the starter motor 203 drives the hollow roller 201 and the synchronous belt 204 to rotate. During rotation, the synchronous belt 204 drives another hollow roller 201 to rotate synchronously. Thus, the rotation of the two hollow rollers 201 drives the conveyor belt 101 to transport the workpiece material. When the conveyor belt 101 is passively rotating to transport material, the installed laser displacement sensor 102 monitors the rotation position of the conveyor belt 101 on the hollow roller 201 in real time. The detection direction of the laser displacement sensor 102 is perpendicular to the edge of the conveyor belt 101. When the distance exceeds the preset threshold, a deviation signal is sent to the PLC control system.

[0040] The rotating pressing structure includes two sets of T-shaped locking blocks 206 fixedly connected to the arc-shaped moving plate 205. The inner wall of the hollow roller 201 has T-shaped grooves 207 that can slide and engage with the two sets of T-shaped locking blocks 206. Arc-shaped baffles 208 are slidably connected to the inner walls of both sides of the hollow roller 201. Arc-shaped grooves 209 are also provided in the inner walls of both sides of the hollow roller 201, and the inner walls of the two arc-shaped grooves 209 are respectively connected to the two arc-shaped baffles 208. The two curved baffles 208 are connected and fixedly connected to the other end plate and the inner wall of the two sides of the hollow roller 201. A micro motor 211 is fixedly connected to the inner wall of one end of the hollow roller 201. A threaded rod 212 is fixedly connected to the shaft of the micro motor 211. Two turntables 213 are threadedly connected to the rod of the threaded rod 212. An inclined plate 214 is connected to the disc of the two turntables 213 in a sliding fit.

[0041] The other end of the inclined plate 214 is fixedly connected to the rods of multiple tapered rods 215, and two springs 216 are fixedly connected between the other end of the inclined plate 214 and the inner wall of the arc-shaped moving plate 205. Two clamping plates 217 are fixedly connected to one end of the inclined plate 214. The two clamping plates 217 can intermittently fit and connect with the two turntables 213 respectively, and the two clamping plates 217 can also intermittently fit and connect with the threaded rod 212.

[0042] The above solution is adopted: such as Figure 3 and Figure 5 As shown, the micro motor 211 inside the hollow roller 201 is started by the PLC control system, which drives the threaded rod 212 to rotate. The rotating threaded rod 212 will simultaneously drive the two turntables 213 to rotate and move. Based on the inclined surface of one end of the inclined plate 214, it will have a pressing and offset effect on the inclined plate 214. At the same time, the movement of the two turntables 213 due to rotation will also synchronously drive the piston rod 218 connected to it magnetically, and perform corresponding squeezing and pulling effects. The inclined plate 214 that is squeezed will be subjected to force and squeeze the spring 216, causing it to deform. At the same time, multiple cone rods 215 will extend through the arc-shaped moving plate 205 due to the squeezing of the inclined plate 214. At the same time, the clamping plate 217 and the threaded rod 212 will no longer be in contact.

[0043] Therefore, multiple cone rods 215 will be inserted into the conveyor belt 101. During the continuous passive rotation of the turntable 213, when they contact and press against the clamping plate 217, the continuously transmitted moving force will indirectly drive the arc-shaped shifting plate 205 to move as a whole. The conveyor belt 101 used to correct the deviation, and the passively moving arc-shaped shifting plate 205 will be guided and translated within the corresponding T-shaped groove 207 by two sets of installed T-shaped blocks 206. The T-shaped blocks 206 are specifically made of natural rubber. The snap-fit ​​between the grooves 207 facilitates the subsequent disassembly, replacement, or maintenance of the arc-shaped shift plate 205. The ease of disassembly and assembly of the arc-shaped shift plate 205 also allows workers to quickly and easily understand the structure of the correction section 2 inside the hollow roller 201. The arc-shaped baffle 208, which is compressed by the spring 210 within the arc-shaped groove 209 due to the movement of the arc-shaped shift plate 205, provides a real-time seal for the roller body of the hollow roller 201, preventing its inner cavity from being exposed to the working environment and effectively isolating it from the furnace. High-temperature dust enters the inner cavity of the hollow roller 201, delaying component aging and extending equipment lifespan. After the conveyor belt 101 is corrected, the PLC control system immediately drives the micro motor 211 to rotate the threaded rod 212 in the opposite direction a certain number of times, causing the turntable 213 to reset to a state where it does not press against the inclined plate 214. Consequently, the cone rod 215, the inclined plate 214, and the clamping plate 217 will reset under the action of the spring 216, thus preventing the cone rod 215 from pressing against the conveyor belt 101. When the contact is engaged, the previously compressed spring 210 will cause the arc-shaped shift plate 205 and the arc-shaped baffle 208 to reset. Since the contact surface between the arc-shaped shift plate 205 and the conveyor belt 101 is much smaller than the contact surface between the hollow roller 201 and the conveyor belt 101, when the arc-shaped shift plate 205 is passively reset, it will not affect the normal horizontal conveying operation of the conveyor belt 101. At the same time, the conveyor belt 101 transmits workpiece materials in a normal horizontal position and is continuously monitored by the laser displacement sensor 102.

[0044] The piston negative pressure structure includes a piston rod 218, a piston cylinder 219 slidably connected to the piston rod 218, a sleeve rod 220 fixedly connected to the outer wall of the piston cylinder 219, the bottom end of the sleeve rod 220 being fixedly connected to the inner wall of the hollow roller 201, an oil supply pipe 221 being fixedly connected through the cylinder of the piston cylinder 219, the pipe body of the oil supply pipe 221 being fixedly connected through the roller body of the hollow roller 201, and an oil guide groove 222 being formed through the side roller body of the hollow roller 201. Each of the oil guide grooves 222 inside is fixedly connected to an L-shaped branch oil pipe 223. An oil extraction pipe 224 is also fixedly connected through the piston cylinder 219. An oil plug 225 is tightly clamped inside one end of the oil extraction pipe 224. Two springs 226 are fixedly connected between the plug plate of the oil plug 225 and the piston cylinder 219. An oil tank 227 is fixedly connected through the other side of the spring 226. The bottom outer wall of the oil tank 227 is fixedly connected to the bottom inner wall of the hollow roller 201.

[0045] The above solution is adopted: such as Figure 5 , 6 7 and Figure 8 As shown, the passive rotation of the two turntables 213 drives the two piston rods 218, which in turn move horizontally within the corresponding piston cylinders 219, generating extrusion and suction forces within the cylinders (the reciprocating translation of the piston rods 218 generates reciprocating suction and extrusion forces within the piston cylinders 219). Consequently, the oil within the piston cylinders 219 is compressed and guided through the oil supply pipe 221 into the oil guide groove 222. Subsequently, the oil in the oil guide groove 222 is guided through the L-shaped branch oil pipe 223 into the bearing 202, providing lubrication and preventing jamming caused by prolonged rotational friction within the plate, which is detrimental to... The smooth rotation of the hollow roller 201 is ensured. When a suction force is generated inside the piston cylinder 219, the oil in the oil tank 227 is drawn through the oil extraction pipe 224 and introduced into the piston cylinder 219. At the moment the suction force is generated, the oil plug 225 is immediately disengaged from the opening of the oil extraction pipe 224, and the spring 3 226 is stretched to deform. Then, when the lubricating oil is squeezed out, the oil plug 225 will immediately block the opening of the oil extraction pipe 224 again, realizing the unidirectional flow of the oil. Thus, while intelligently and automatically correcting the deviation of the conveyor belt 101, it can also avoid the problem of jamming and uneven rotation during the rotational conveying process.

[0046] One point that needs to be added is that the section of the piston rod 218 that contacts the turntable 213 is a magnetic block, while the turntable 213 is made of metal. Furthermore, a T-shaped locking post is inserted through one side of the top of the oil tank 227. This allows the T-shaped locking post to be removed directly when the arc-shaped moving plate 205 is subsequently removed, so that the lubricating oil in the oil tank 227 can be replenished.

[0047] A method for correcting the belt alignment of a mesh belt furnace, comprising the following steps:

[0048] Step 1: The mesh belt furnace body 1 is operated. The motor 203 is started to drive the hollow roller 201 and the synchronous belt 204 to rotate. During the rotation, the synchronous belt 204 will drive another hollow roller 201 to rotate synchronously. Thus, the rotation of the two hollow rollers 201 will drive the conveyor belt 101 to transport the workpiece material. When the conveyor belt 101 is passively rotating to transport material, the installed laser displacement sensor 102 will monitor the rotation position of the conveyor belt 101 on the hollow roller 201 in real time. The detection direction of the laser displacement sensor 102 is perpendicular to the edge of the conveyor belt 101. When the distance exceeds the preset threshold, a deviation signal is sent to the PLC control system.

[0049] Step 2: At that time, the micro motor 211 inside the hollow roller 201 is started by the PLC control system, which drives the threaded rod 212 to rotate. The rotating threaded rod 212 will simultaneously drive the two turntables 213 to rotate and move, which will have a pressing and offset effect on the inclined plate 214. At the same time, multiple cone rods 215 will extend through the arc-shaped moving plate 205 due to the compression of the inclined plate 214. At the same time, the clamping plate 217 and the threaded rod 212 will no longer be in contact. Multiple cone rods 215 will be inserted into the conveyor belt 101. During the continuous passive rotation of the turntable 213, when it contacts and presses against the clamping plate 217, the continuous moving force will indirectly drive the arc-shaped moving plate 205 to move as a whole, which is used to correct the offset of the conveyor belt 101.

[0050] Step 3: During the passive rotation and movement of the two turntables 213, the two piston rods 218 driven by them will move horizontally within the corresponding piston cylinders 219, generating extrusion and suction forces within the cylinders. As a result, the oil in the piston cylinders 219 will be extruded through the oil supply pipe 221 and guided into the oil guide groove 222. Subsequently, the oil in the oil guide groove 222 will be guided into the bearing 202 through the L-shaped branch oil pipe 223 for lubrication, ensuring the smoothness of the overall rotation. When suction forces are generated within the piston cylinders 219, the oil in the oil tank 227 will be drawn through the oil extraction pipe 224 and introduced into the piston cylinders 219. At the moment the suction forces are generated, the oil plug 225 will immediately disengage from the opening of the oil extraction pipe 224, stretching the spring 3 226 to deform it. Then, when the lubricating oil is squeezed out, the oil plug 225 will immediately block the opening of the oil extraction pipe 224 again, achieving unidirectional flow of the oil.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A conveyor belt correction device for a mesh belt furnace, comprising a mesh belt furnace body (1), characterized in that: The mesh belt furnace body (1) is provided with a conveyor belt (101). Laser displacement sensors (102) for monitoring the offset of the conveyor belt (101) are fixedly connected to both sides of one end of the mesh belt furnace body (1). The mesh belt furnace body (1) is provided with a correction part (2). The correction part (2) includes hollow rollers (201) that can be rotated and connected to both ends of the conveyor belt (101). A slot is opened on one end of the two hollow rollers (201). An arc-shaped moving plate (205) is slidably connected to each slot. Each arc-shaped moving plate (205) has a plate... The body is provided with multiple rod grooves, and each set of rod grooves is fitted and slidably connected with a conical rod (215) in the inner wall. Each set of conical rods (215) can intermittently fit and engage with both ends of the conveyor belt (101). A rotary transmission structure is provided between the two hollow rollers (201). A rotary pressing structure is provided between each set of conical rods (215) and the two hollow rollers (201) respectively to control the extension and retraction of each set of conical rods (215). A set of oppositely symmetrical piston negative pressure structure is also provided between the rotary pressing structure and the hollow rollers (201).

2. The mesh belt furnace conveyor belt correction device according to claim 1, characterized in that: The rotary transmission structure includes bearings (202) fixedly connected to the roller bodies on both sides of the two hollow rollers (201), and the roller bodies of the two hollow rollers (201) rotate through the mesh belt furnace body (1), while the outer rings of the two sets of bearings (202) are fixedly connected to the inner cavity plate of the mesh belt furnace body (1). A motor (203) is fixedly connected to one side of the hollow roller (201), and a frame is fixedly connected to the bottom outer wall of the motor (203). The frame is fixedly connected to the outer wall of the mesh belt furnace body (1), and a synchronous belt (204) is fixedly connected to one side of the two hollow rollers (201).

3. The mesh belt furnace conveyor belt correction device according to claim 2, characterized in that: The rotating pressing structure includes two sets of T-shaped locking blocks (206) fixedly connected to the arc-shaped moving plate (205). The inner wall of the hollow roller (201) is provided with T-shaped grooves (207) that can slide and engage with the two sets of T-shaped locking blocks (206). Arc-shaped baffles (208) are slidably connected to both sides of the inner wall of the hollow roller (201). Arc-shaped grooves (209) are provided to both sides of the hollow roller (201). The inner walls of the two arc-shaped grooves (209) are slidably connected to the two arc-shaped baffles (208) respectively. Two springs (210) are fixedly connected between the other end of the two arc-shaped baffles (208) and the inner walls of both sides of the hollow roller (201).

4. The mesh belt furnace conveyor belt correction device according to claim 3, characterized in that: A micro motor (211) is fixedly connected to the inner wall of one end of the hollow roller (201). A threaded rod (212) is fixedly connected to the shaft of the micro motor (211). Two turntables (213) are threadedly connected to the rod body of the threaded rod (212). An inclined plate (214) is slidably connected to the disc body of the two turntables (213).

5. The mesh belt furnace conveyor belt correction device according to claim 4, characterized in that: The other end plate of the inclined plate (214) is fixedly connected to the rods of multiple cone rods (215), and two springs (216) are fixedly connected between the other end plate of the inclined plate (214) and the inner wall of the arc-shaped moving plate (205). Two clamping plates (217) are fixedly connected to one end plate of the inclined plate (214). The two clamping plates (217) can intermittently fit and connect with the two turntables (213), and the two clamping plates (217) can also intermittently fit and connect with the threaded rod (212).

6. The mesh belt furnace conveyor belt correction device according to claim 5, characterized in that: The piston negative pressure structure includes a piston rod (218), a piston cylinder (219) is attached and slidably connected to the piston rod (218), a sleeve rod (220) is fixedly connected to the outer wall of the piston cylinder (219), and the bottom end of the sleeve rod (220) is fixedly connected to the inner wall of the hollow roller (201).

7. The mesh belt furnace conveyor belt correction device according to claim 6, characterized in that: An oil supply pipe (221) is fixedly connected through the cylinder of the piston cylinder (219). The pipe body of the oil supply pipe (221) and the roller body of the hollow roller (201) are fixedly connected through the cylinder. An oil guide groove (222) is opened through the side roller body of the hollow roller (201). An L-shaped branch oil pipe (223) is fixedly connected at each groove of the oil guide groove (222) opened in the hollow roller (201).

8. The mesh belt furnace conveyor belt correction device according to claim 7, characterized in that: An oil extraction pipe (224) is also fixedly connected through the piston cylinder (219). An oil plug (225) is tightly clamped inside one end of the oil extraction pipe (224). Two springs (226) are fixedly connected between the plug plate of the oil plug (225) and the piston cylinder (219).

9. The mesh belt furnace conveyor belt correction device according to claim 8, characterized in that: An oil tank (227) is fixedly connected to the other side of the spring three (226) tube. The bottom outer wall of the oil tank (227) is fixedly connected to the bottom inner wall of the hollow roller (201).

10. A method for correcting the belt alignment of a mesh belt furnace conveyor, applied to the mesh belt furnace conveyor belt correction device described in any one of claims 1-9, characterized in that: The steps for corrective operation are as follows: Step 1: The mesh belt furnace body (1) is run. The motor (203) is started to drive the hollow roller (201) and the synchronous belt (204) to rotate. During the rotation, the synchronous belt (204) will drive another hollow roller (201) to rotate synchronously. Thus, the rotation of the two hollow rollers (201) will drive the conveyor belt (101) to transport the workpiece material. When the conveyor belt (101) is passively rotating to transport material, the installed laser displacement sensor (102) will monitor the rotation position of the conveyor belt (101) on the hollow roller (201) in real time. The detection direction of the laser displacement sensor (102) is perpendicular to the edge of the conveyor belt (101). When the distance exceeds the preset threshold, a deviation signal is sent to the PLC control system. Step 2: At that time, the micro motor (211) inside the hollow roller (201) is started by the PLC control system, which drives the threaded rod (212) to rotate. The rotating threaded rod (212) will simultaneously drive the two turntables (213) to rotate and move, which will have the effect of pressing and offsetting the inclined plate (214). At the same time, multiple cone rods (215) will extend through the arc-shaped moving plate (205) due to the squeezing of the inclined plate (214). At the same time, the clamping plate (217) and the threaded rod (212) will no longer be in contact. Multiple cone rods (215) will be inserted into the conveyor belt (101). During the continuous passive rotation of the turntable (213), when it comes into contact with the clamping plate (217), the continuous moving force will indirectly drive the arc-shaped moving plate (205) to move as a whole, which is used to correct the offset of the conveyor belt (101). Step 3: During the passive rotation of the two turntables (213), the two piston rods (218) driven by them will move horizontally within the corresponding piston cylinders (219), generating extrusion and suction forces within the cylinders. As a result, the oil in the piston cylinders (219) will be extruded through the oil supply pipe (221) into the oil guide groove (222). Subsequently, the oil in the oil guide groove (222) will be guided into the bearing (202) through the L-shaped branch oil pipe (223) for lubrication, ensuring the overall rotation... Smoothness, and when the piston cylinder (219) generates suction force, it will draw the oil in the oil tank (227) through the oil extraction pipe (224) and introduce it into the piston cylinder (219). At the moment the suction force is generated, it will immediately drive the oil plug (225) to detach from the pipe opening of the oil extraction pipe (224), stretch the spring three (226) to deform it, and then when the lubricating oil is squeezed out, the oil plug (225) will immediately block the pipe opening of the oil extraction pipe (224) again to realize the one-way flow of the oil.

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