Correcting device and method for conveyor belt of mesh belt furnace

Abstract

The invention belongs to the technical field of mesh belt furnaces, and particularly relates to a mesh belt furnace conveying belt deviation rectifying device and method. Comprising a rack, a conveying belt and a first deviation rectifying assembly, tensioning wheels are rotationally arranged at the two ends of the rack, the tensioning wheels at the two ends of the rack are rotationally sleeved with the conveying belt, two sets of supporting chains are arranged on the inner side of the conveying belt, and the first deviation rectifying assembly is connected to the rack and located at the top of the inner side of the conveying belt; the first deviation rectifying assembly comprises a deviation rectifying wheel and two sets of deviation rectifying rods, the two sets of deviation rectifying rods are connected to the deviation rectifying wheel in a central symmetry mode, gears are rotationally connected to the two sets of deviation rectifying rods, and the two gears are located on the outer side faces of the front ends and the rear ends of the two sets of supporting chains correspondingly; the deviation rectifying wheel abuts against the conveying belt to be pulled to accumulate force, and the conveying belt is slowly pulled to be reset after the deviation rectifying wheel accumulates force. The conveying belt is slowly pulled back when deviating, and deformation caused by rapid stress of the conveying belt is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of mesh belt furnaces, and particularly relates to a mesh belt furnace conveyor belt deviation rectification device and method thereof. Background Art

[0002] A mesh belt furnace is a continuous heat treatment device widely used in industries such as metal processing, powder metallurgy, ceramic sintering, and electronic component manufacturing. Its core structure consists of a high-temperature resistant mesh belt transmission system, a heating furnace chamber, a cooling system, and a control system, and can achieve various heat treatment processes such as quenching, tempering, brazing, sintering, and annealing. Among them, the conveyor belt is the core component of the mesh belt furnace, directly bearing workpieces and suffering from high temperature, mechanical loads, and chemical corrosion. Its performance directly affects the stability, lifespan, and product quality of the furnace. Generally, both ends of the conveyor belt are tensioned and driven through tensioning wheels, and materials are placed in the central area of the conveyor belt, causing the central part of the conveyor belt to collapse and deform under long-term high temperature and pulling forces on the conveyor belt. The centers and both sides of the tensioning wheels deviate under uneven forces, and then it is easy for the axes of the tensioning wheels to be non-parallel or not perpendicular to the center line of the conveyor belt after tensioning the conveyor belt, resulting in uneven tensions on both sides of the conveyor belt, generating lateral component forces, and causing the conveyor belt to deviate towards the side with greater tension.

[0003] In order to rectify the deviation of the conveyor belt, a mesh belt device with a deviation rectification function and a mesh belt furnace using the device in Chinese Patent CN204902570U. The mesh belt device includes a mesh belt, and a deviation rectification roller for rolling and pressing the side surface of the mesh belt is provided on the side of the mesh belt away from the power input. The deviation rectification roller is rotatably assembled on the central shaft, and the extending direction of the central shaft is perpendicular to the plane where the mesh belt is located. A deviation rectification roller is provided on the side of the mesh belt away from the power input, and the pressing force of the deviation rectification roller on the side surface of the mesh belt can offset the action of the offset component force that drives the mesh belt to deviate towards the side away from the power input, so that the mesh belt maintains a normal working position. However, in this prior art, the deviation of the mesh belt is quickly rectified by the deviation rectification roller, and the temperature of the conveyor belt is relatively high during the operation of the mesh belt furnace. The conveyor belt is easily deformed by the extrusion of the deviation rectification roller on its side surface, resulting in the edges of the conveyor belt curling, further causing uneven forces on the conveyor belt and further deformation, reducing the service life of the conveyor belt.

[0004] In order to avoid uneven deformation of the conveyor belt caused by large forces during rapid deviation rectification of the conveyor belt, a mesh belt furnace conveyor belt deviation rectification device and method are proposed. Summary of the Invention

[0005] To solve the above problems existing in the prior art, the present invention provides a mesh belt furnace conveyor belt deviation rectification device and method thereof.

[0006] The object of the present invention can be achieved by the following technical solutions:

[0007] A belt deviation rectification device for a mesh belt furnace of the present invention includes a frame, a conveyor belt and a first deviation rectification component. Tensioning wheels are rotatably arranged at both ends of the frame. The conveyor belt is rotatably sleeved on the tensioning wheels at both ends of the frame. Two groups of support chains are arranged inside the conveyor belt. The first deviation rectification component is connected to the frame and is located at the top inside the conveyor belt. The first deviation rectification component includes a deviation rectification wheel and two groups of deviation rectification rods. The two groups of deviation rectification rods are symmetrically connected to the deviation rectification wheel at the center. Gears are rotatably connected to the two groups of deviation rectification rods. The two gears are respectively located on the outer sides of the front ends and the rear ends of the two groups of support chains. The deviation rectification wheel is in contact with and pulled by the conveyor belt to store energy. After the deviation rectification wheel stores energy, it slowly pulls the conveyor belt back to its original position.

[0008] Further, a connecting rod is arranged at the bottom of the deviation rectification wheel. The connecting rod is connected to the frame. The deviation rectification wheel is rotatably connected to the connecting rod. A torsion spring is arranged between the deviation rectification wheel and the connecting rod. The deviation rectification wheel rotates and drives the torsion spring to store energy.

[0009] Further, the deviation rectification rod is slidably connected to the deviation rectification wheel. A locking mechanism is arranged inside the deviation rectification rod. The gear is in contact with and meshes with the support chain and drives the locking mechanism to be engaged with the deviation rectification wheel.

[0010] Further, the locking mechanism includes a sliding rod and a locking rod. A ratchet tooth is arranged on the side of the gear. The sliding rod is slidably arranged inside the deviation rectification rod. The locking rod is rotatably arranged inside the deviation rectification rod to form a seesaw structure. The locking rod is located on one side of the deviation rectification wheel. The sliding rod is located on one side of the gear. The top of the sliding rod abuts against the side of the ratchet tooth. The ratchet tooth rotates and pushes the sliding rod to buckle the locking rod on the deviation rectification wheel.

[0011] Further, both ends of the sliding rod are spherical structures.

[0012] Further, a large spring is arranged inside the deviation rectification rod. The large spring abuts against the lower part of the spherical structure of the sliding rod. The large spring pushes the sliding rod to reset when the ratchet tooth is stationary and releases the buckling of the locking rod and the deviation rectification wheel.

[0013] Further, it further includes a second deviation rectification component. The second deviation rectification component has the same structure as the first deviation rectification component. The second deviation rectification component is connected to the frame and is located at the bottom inside the conveyor belt. The positions of the two groups of gears on the second deviation rectification component are symmetrical to the positions of the two groups of gears on the first deviation rectification component in the vertical projection plane.

[0014] A method for correcting the deviation of the conveyor belt of a mesh belt furnace. After the gears on the first deviation correction component and the second deviation correction component are engaged with the support chain, the deviation correction wheel is pulled to store energy, and after the deviation correction wheel stores energy, it slowly corrects and pulls back the conveyor belt and releases the elastic force.

[0015] The beneficial effects of the present invention are as follows: When the conveyor belt deviates, the support chain on the conveyor belt will come into contact and engage with the gear, and the gear will rotate as the conveyor belt moves. Since the rotational friction force of the gear is relatively large, a relatively large force is required to drive the gear to rotate. At this time, the support chain on the conveyor belt will form a certain pulling force on the deviation correction wheel through the gear. After the deviation correction wheel is subjected to the pulling force, it stores energy and blocks the continuous deviation of the conveyor belt. Until the conveyor belt is stable, the stored energy of the deviation correction wheel is released and the conveyor belt is pulled back again through the deviation correction rod and the gear. During this process, the stored energy of the deviation correction wheel is slowly released. Therefore, the acting force on the conveyor belt in a short period of time is relatively small, and the deformation amount can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the first correction component of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the second correction component of the present invention;

[0020] Figure 4 It is a schematic diagram of the main structure of the present invention;

[0021] Figure 5 For the present invention Figure 4 The enlarged schematic diagram at position A;

[0022] Figure 6 For the present invention Figure 4 The enlarged schematic diagram at position B;

[0023] Legend: 1, tensioning wheel; 2, conveyor belt; 3, deviation correction wheel; 4, deviation correction rod; 5, gear; 6, support chain; 7, torsion spring; 8, slide bar; 9, locking rod; 10, large spring; 11, ratchet teeth. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, describe in detail the specific embodiments, structures, features, and effects according to the present invention.

[0025] As Figures 1 - 6As shown in the figure, a belt deviation rectifying device for a mesh belt furnace of the present invention includes a frame, a conveyor belt 2, and a first deviation rectifying component. Tension wheels 1 are rotatably arranged at both ends of the frame. The conveyor belt 2 is rotatably sleeved on the tension wheels 1 at both ends of the frame. Two groups of support chains 6 are arranged inside the conveyor belt 2. The first deviation rectifying component is connected to the frame and is located at the top inside the conveyor belt 2. The first deviation rectifying component includes a deviation rectifying wheel 3 and two groups of deviation rectifying rods 4. The two groups of deviation rectifying rods 4 are symmetrically connected to the deviation rectifying wheel 3 at the center. Gears 5 are rotatably connected to both groups of deviation rectifying rods 4. The two gears 5 are respectively located on the outer sides of the front end and the rear end of the two groups of support chains 6. The deviation rectifying wheel 3 is in contact with and pulls to store energy through the conveyor belt 2. After the deviation rectifying wheel 3 stores energy, it slowly pulls the conveyor belt 2 back to its original position;

[0026] Due to the fact that in the prior art, the mesh belt is quickly rectified by a deviation rectifying roller, and when the mesh belt furnace is working, the temperature on the conveyor belt is relatively high. The conveyor belt is easily deformed by the extrusion of the deviation rectifying roller on its side, which may cause the conveyor belt that is easily deformed at high temperatures to be extruded and deformed, and further cause the edges of the conveyor belt to curl, further making the conveyor belt unevenly stressed and further deformed, resulting in a reduced service life of the conveyor belt;

[0027] In order to rectify the conveyor belt 2 when it is offset and apply a force to it slowly to avoid damage to the conveyor belt 2, therefore, two deviation rectifying rods 4 that are symmetrically arranged on the deviation rectifying wheel 3 are located on the outer sides of the two support beams, and as Figure 2 shown in the figure, one of the deviation rectifying rods 4 is located on the right side of the front end of the conveyor belt 2, and the other is located on the left side of the rear end of the conveyor belt 2. The deviation rectifying wheel 3 can store energy when it is stressed. Therefore, after the conveyor belt 2 is offset, the support chain 6 on the conveyor belt 2 will contact and mesh with the gear 5, and the gear 5 will rotate as the conveyor belt 2 moves. The rotational friction of the gear 5 is relatively large, so a relatively large force is required to drive the gear 5 to rotate. At this time, the support chain 6 on the conveyor belt 2 will form a certain pulling force on the deviation rectifying wheel 3 through the gear 5. After the deviation rectifying wheel 3 is pulled and stores energy, it blocks the further offset of the conveyor belt 2. Until the conveyor belt 2 is stable, the stored energy of the deviation rectifying wheel 3 is released and the conveyor belt 2 is pulled back again through the deviation rectifying rod 4 and the gear 5. During this process, the stored energy of the deviation rectifying wheel 3 is slowly released. Therefore, the force applied to the conveyor belt 2 in a short time is relatively small, and the deformation amount can be reduced.

[0028] Specifically, a connecting rod is arranged at the bottom of the deviation rectifying wheel 3. The connecting rod is connected to the frame. The deviation rectifying wheel 3 is rotatably connected to the connecting rod. A torsion spring 7 is arranged between the deviation rectifying wheel 3 and the connecting rod. The deviation rectifying wheel 3 rotates and drives the torsion spring 7 to store energy; after the conveyor belt 2 is offset, the deviation rectifying wheel 3 is pulled through the gear 5 and the deviation rectifying rod 4, so that the deviation rectifying wheel 3 rotates a certain angle after being pulled, and the deviation rectifying wheel 3 forms stored energy under the action of the torsion spring 7. After the conveyor belt 2 stops moving, the elastic force of the torsion spring 7 is released, slowly pulling the conveyor belt 2 back to its original position, reducing the extrusion and pulling force on the conveyor belt 2.

[0029] Since two deviation rectifying rods 4 are provided on the deviation rectifying wheel 3 at the same time, the two ends of the conveyor belt 2 can be deviation rectified simultaneously through the deviation rectifying rods 4. However, the two ends of the conveyor belt 2 are respectively sleeved on two tensioning wheels 1. When only one side of the conveyor belt 2 is offset and the other side is not offset, the pulling force of one deviation rectifying rod 4 on the deviation rectifying wheel 3 will drive the other deviation rectifying rod 4 to move synchronously, resulting in the offset of the conveyor belt 2 on the side that was not originally offset. To avoid this problem, in an embodiment, the deviation rectifying rod 4 is slidably connected to the deviation rectifying wheel 3, and a locking mechanism is provided inside the deviation rectifying rod 4. The gear 5 abuts and meshes with the support chain 6 and drives the locking mechanism to engage with the deviation rectifying wheel 3;

[0030] By providing a locking mechanism inside the deviation rectifying rod 4, after the gear 5 on the deviation rectifying rod 4 meshes with the support chain 6 and rotates, the locking mechanism can be driven by the action of the gear 5 to lock with the deviation rectifying wheel 3. When the conveyor belt 2 is not offset, the gear 5 does not rotate, and the locking mechanism is separated from the deviation rectifying wheel 3. At this time, the deviation rectifying rod 4 is only slidably connected to the side of the deviation rectifying wheel 3. Therefore, when only one side of the conveyor belt 2 is offset, the gear 5 on this side meshes with the support chain 6, and the locking mechanism on this side is locked with the deviation rectifying wheel 3. The deviation rectifying rod 4 on the other side slides relatively on the deviation rectifying wheel 3 while the deviation rectifying wheel 3 rotates, while remaining relatively stationary itself. Specifically, a sleeve needs to be provided on the connecting rod so that the deviation rectifying rod 4 is located inside the sleeve, and a certain frictional force is formed on the deviation rectifying rod 4 through the sleeve to prevent the deviation rectifying rod 4 on the side that is not meshed with the support chain 6 from being driven to act and locked with the deviation rectifying wheel 3 after the deviation rectifying wheel 3 moves.

[0031] Furthermore, as Figure 5 shown, the locking mechanism includes a sliding rod 8 and a locking rod 9. The side of the gear 5 is provided with ratchet teeth 11. The sliding rod 8 is slidably arranged inside the deviation rectifying rod 4, and the locking rod 9 is rotatably arranged inside the deviation rectifying rod 4 to form a seesaw structure. The locking rod 9 is located on one side of the deviation rectifying wheel 3, and the sliding rod 8 is located on the side of the gear 5. The top of the sliding rod 8 abuts against the side of the ratchet teeth 11. The ratchet teeth 11 rotate and push the sliding rod 8 to buckle the locking rod 9 onto the deviation rectifying wheel 3;

[0032] The locking lever 9 forms a seesaw structure within the deviation rectifying lever 4. At the initial state, one end of the sliding rod 8 presses against the locking lever 9, separating the locking lever 9 from the deviation rectifying wheel 3. At this time, the conveyor belt 2 is not offset. Therefore, the gear 5 and the ratchet teeth 11 remain stationary, and the top of the sliding rod 8 is located at the gap between the teeth of the ratchet teeth 11. After the conveyor belt 2 is offset, the gear 5 and the ratchet teeth 11 rotate. Then, the top of the sliding rod 8 slides and abuts against the top of the ratchet teeth 11 as the ratchet teeth 11 rotate. The rotation of the ratchet teeth 11 pushes the sliding rod 8 to slide downward, and through the sliding rod 8, the locking lever 9 is pushed to swing to the other side and is latched in the groove on the rim surface of the deviation rectifying wheel 3 to form a locking engagement. Through the locking engagement between the locking lever 9 and the deviation rectifying wheel 3, a tensile drive is formed, achieving the effect that only when the gear 5 meshes with the support chain 6 can the deviation rectifying wheel 3 be pulled.

[0033] In order to prevent the sliding rod 8 from being stuck when contacting the ratchet teeth 11, in one embodiment, both ends of the sliding rod 8 are spherical structures. This spherical structure can extend into the gap between the teeth of the ratchet teeth 11 and can also be pushed out after the ratchet teeth 11 rotate.

[0034] Furthermore, a large spring 10 is arranged inside the deviation rectifying lever 4. The large spring 10 abuts against the lower part of the spherical structure of the sliding rod 8. The large spring 10 pushes the sliding rod 8 to reset when the ratchet teeth 11 are stationary and releases the latching between the locking lever 9 and the deviation rectifying wheel 3. After the deviation rectifying lever 4 pulls the conveyor belt 2 to reset under the action of the deviation rectifying wheel 3, the gear 5 and the ratchet teeth 11 no longer rotate. At this time, the large spring 10 will push the sliding rod 8 to reset. The reset of the sliding rod 8 will press against the end of the locking lever 9 away from the deviation rectifying wheel 3 again, separating the locking lever 9 from the groove on the deviation rectifying wheel 3 and unlocking the deviation rectifying lever 4 and the deviation rectifying wheel 3.

[0035] Furthermore, it further includes a second deviation rectifying component. The second deviation rectifying component has the same structure as the first deviation rectifying component. The second deviation rectifying component is connected to the frame and is located at the inner bottom of the conveyor belt 2. The positions of the two groups of gears 5 on the second deviation rectifying component are symmetric with the positions of the two groups of gears 5 on the first deviation rectifying component in the vertical projection plane. As Figure 1 、 Figure 2 and Figure 3 shown, the conveyor belt 2 forms a loop around the two tension wheels 1. The first deviation rectifying component is located at the inner top of the conveyor belt 2, and the second deviation rectifying component is located at the inner bottom of the conveyor belt 2. The two deviation rectifying levers 4 on the first deviation rectifying component are respectively meshed with the front right side and the rear left side of the support chain 6 at the inner top of the conveyor belt 2, while the two deviation rectifying levers 4 on the second deviation rectifying component are respectively meshed with the front left side and the rear right side of the support chain 6 at the inner bottom of the conveyor belt 2. Then, the left and right sides of the front and rear ends of the conveyor belt 2 can be respectively corrected for deviation.

[0036] Working principle: A method for correcting the deviation of the conveyor belt 2 of a mesh belt furnace. After the gears 5 on the first deviation correction component and the second deviation correction component are engaged with the support chain 6, they pull the deviation correction wheel 3 to store energy. After the deviation correction wheel 3 stores energy, it slowly corrects and pulls back the conveyor belt 2 and releases the elastic force. When one end or both ends of the conveyor belt 2 shift to one side, the support chain 6 inside the conveyor belt 2 contacts and engages with the gear 5 on the first deviation correction component or the second deviation correction component. The rotation of the gear 5 drives the ratchet teeth 11 on the gear 5 to rotate. The rotation of the ratchet teeth 11 pushes the slide rod 8 to move downward. The slide rod 8 pushes the locking rod 9 to buckle on the deviation correction wheel 3, so that the deviation correction wheel 3 provides a pulling force along the direction in which the gear 5 is pulled by the support chain 6, causing the deviation correction wheel 3 to rotate and store energy, reducing the displacement of the conveyor belt 2 until it stops. Then, the torsion spring 7 on the deviation correction wheel 3 gradually releases the elastic force, and the conveyor belt 2 is pulled back to its original position by the reset rotation of the deviation correction wheel 3. During this process, the reset time is extended through the deviation correction wheel 3, the acting force on the conveyor belt 2 is reduced, the deformation amount of the conveyor belt 2 is reduced, and the service life of the conveyor belt 2 is improved.

[0037] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the equivalent embodiments of equivalent changes by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A mesh belt furnace conveyor belt deviation correction device, characterized in that: The present invention comprises a frame, a conveyor belt and a first deviation correcting component, wherein tensioning wheels are rotatably provided at both ends of the frame, the conveyor belt is rotatably sleeved on the tensioning wheels at both ends of the frame, two groups of supporting chains are provided on the inner side of the conveyor belt, the first deviation correcting component is connected to the frame and is located at the inner top of the conveyor belt, the first deviation correcting component comprises a deviation correcting wheel and two groups of deviation correcting rods, the two groups of deviation correcting rods are symmetrically connected to the deviation correcting wheel, the two groups of deviation correcting rods are rotatably connected with gears, the two gears are respectively located on the outer side surfaces of the front end and the rear end of the two groups of supporting chains, the deviation correcting wheel abuts against the deviation correcting wheel through the conveyor belt to pull and store force, and the deviation correcting wheel slowly pulls the conveyor belt back to its original position after storing force.

2. The mesh belt furnace conveyor belt deviation correction device according to claim 1, characterized in that: A connecting rod is provided at the bottom of the correcting wheel, the connecting rod is connected to the frame, the correcting wheel is rotatably connected to the connecting rod, a torsion spring is provided between the correcting wheel and the connecting rod, and the correcting wheel rotates and drives the torsion spring to store force.

3. The mesh belt furnace conveyor belt deviation correction device according to claim 1, characterized in that: The deflection correction rod is slidably connected to the deflection correction wheel, a locking mechanism is arranged in the deflection correction rod, and the gear abuts and meshes with the support chain and drives the locking mechanism to engage and connect with the deflection correction wheel.

4. The mesh belt furnace conveyor belt deviation correction device according to claim 3 is characterized in that: The locking mechanism includes a sliding rod and a locking rod. Ratchet teeth are arranged on the side of the gear. The sliding rod is slidably arranged in the correction rod. The locking rod is rotatably arranged in the correction rod to form a seesaw structure. The locking rod is located on one side of the correction wheel, and the sliding rod is located on one side of the gear. The top of the sliding rod abuts against the side of the ratchet teeth. The ratchet teeth rotate and push the sliding rod to buckle the locking rod on the correction wheel.

5. The mesh belt furnace conveyor belt deviation correction device according to claim 4, characterized in that: Both ends of the slide bar are spherical structures.

6. The mesh belt furnace conveyor belt deviation correction device according to claim 5, characterized in that: A large spring is arranged inside the deviation correction rod, and the large spring abuts against the bottom of the spherical structure of the slide rod. The large spring pushes the slide rod to reset when the ratchet teeth are stationary and releases the locking rod from the deviation correction wheel.

7. The mesh belt furnace conveyor belt deviation correction device according to claim 6, characterized in that: It also includes a second correcting component, which has the same structure as the first correcting component. The second correcting component is connected to the frame and is located at the bottom inner side of the conveyor belt. The positions of the two sets of gears on the second correcting component are symmetrical with the positions of the two sets of gears on the first correcting component on the vertical projection plane.

8. A method for correcting the conveyor belt of a mesh belt furnace, applicable to a device for correcting the conveyor belt of a mesh belt furnace as claimed in any one of claims 1 to 7, characterized in that: The gears on the first deviation-correcting assembly and the second deviation-correcting assembly mesh with the supporting chain to pull the deviation-correcting wheel to store force. After the deviation-correcting wheel stores force, it slowly corrects and pulls back the conveyor belt and releases the elastic force.

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