A skew correcting mechanism for a roller hearth furnace

Abstract

The present application belongs to the technical field of conveying mechanism auxiliary, and discloses a sagger deviation correction mechanism of roller furnace, which comprises a conveying mechanism and a group of saggars placed thereon. Through the cooperation of the correction assembly and other structures, when the sagger deviates, the second correction rod is folded and pushes the counterweight frame up through the connecting rod, and is higher than the other counterweight frame. The counterweight block slides to the first correction rod. Under the deviation state, the supporting force of the conveying roller on the sagger is uneven, the counterweight frame and the counterweight block increase the weight on one side of the sagger, the force applied to the folding of the first correction rod increases, the conveying roller drives the roller to rotate instead of directly contacting the correction rod, and four factors are added. The other side of the sagger is preferentially moved by the conveying roller rotation, and when the two correction rods are located on the same axis, the sagger can move normally. The position deviation during the sagger placement is solved, so that the sagger is stuck on the furnace wall or scratches appear between the sagger and the furnace wall, and the sintering condition is affected.

Description

Technical Field

[0001] This invention belongs to the field of auxiliary technology of conveying mechanisms, specifically a sagger deviation correction mechanism for a roller furnace. Background Technology

[0002] As a continuous industrial heating device, the roller furnace can drive the load through the high temperature zone at a uniform speed by rotating the parallel rollers inside, so as to achieve sintering, drying or heat treatment. This mechanism is generally called a conveying device. Among them, ceramics, lithium battery materials and other materials need to be processed by roller furnace. However, these materials are usually placed in saggers first and then sent into the roller furnace.

[0003] It is important to note that if the material or sagger deviates from the centerline during roller conveyor transport, it may be due to uneven rollers, uneven load, or mechanical wear. If this causes jamming or scraping of the furnace wall, it will lead to reduced sintering uniformity or even production stoppage. In the current technology, the sagger is usually placed in the roller furnace manually, by crane, or by robot. This makes it difficult to ensure that the sagger is centered on the conveyor roller. If the material or sagger deviates from the centerline of the conveyor roller in the roller furnace, it is unlikely that it can be corrected manually. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides a sagger deviation correction mechanism for a roller furnace, which solves the problem that it is difficult to ensure that the sagger is located on the center line of the conveyor roller when the sagger is placed directly, and it is difficult to manually correct the deviation if it occurs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sagger deviation correction mechanism for a roller furnace, comprising a conveying mechanism and a set of saggers placed thereon, and further comprising;

[0006] A protective frame is installed around the outer periphery of the sagger;

[0007] Two alignment components are symmetrically arranged on the outer periphery of the protective frame;

[0008] One of the aforementioned correction components includes a counterweight frame slidably mounted on the outer periphery of a protective frame, a connecting rod hinged to the outer side of the counterweight frame, a correction rod hinged to the outer periphery of the protective frame, two rollers rotatably mounted at the lower end of the correction rod, the end of the connecting rod hinged to the middle of the rollers, and a guide plate hinged to the end of the counterweight frame.

[0009] The conveying mechanism includes a support mechanism and conveying rollers;

[0010] A counterweight is mounted on both guide plates, and the correction rod is located between two adjacent conveyor rollers.

[0011] Preferably, the ends of the two guide plates abut against each other, and the two guide plates are combined into a whole with the counterweight movably fitted on its outside.

[0012] Preferably, the correction rod is arc-shaped. The counterweight frame can not descend further after falling to the hinge point at the top of the correction rod due to gravity. At this time, the counterweight frame pushes the correction rod to fold through the connecting rod, but the correction rod does not contact the outer periphery of the protective frame.

[0013] Preferably, an auxiliary mechanism is symmetrically installed on both sides of the protective frame;

[0014] One of the auxiliary mechanisms includes a pusher plate slidably mounted on the side of the protective frame, a turntable rotatably mounted on the pusher plate, and the top of the pusher plate connected to the counterweight frame via a pusher rod.

[0015] Preferably, when the correction rod passes through each conveyor roller, it can be blocked by the conveyor roller and repeatedly folded. The folding of the correction rod can push the counterweight frame to move up and down through the connecting rod.

[0016] The counterweight frame moves back and forth, and its position can be changed by pulling the push plate through the push rod.

[0017] Preferably, the protective frame is provided with a positioning mechanism inside. The positioning mechanism includes an auxiliary frame, and the auxiliary frame is provided with a set of locators, each of which is located in the inner wall of the protective frame.

[0018] Preferably, the positioner includes a gear rotatably mounted in the inner wall of the protective frame, a toothed plate meshing with the gear is installed at the bottom of the auxiliary frame, and a positioning post is movably engaged with the inner wall of the protective frame, the positioning post being threadedly connected to the gear.

[0019] Preferably, the side of the positioning post is on the same side as the inner wall of the protective frame, and both ends of the top of the auxiliary frame are threaded with a hanging lug. All the structures in the correction mechanism are made of high-temperature resistant materials.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] This invention, through the coordinated arrangement of a correction component and other structures, ensures that when the sagger shifts, the second correction rod folds up and pushes the counterweight frame upwards via a connecting rod, making it higher than the other counterweight frame. The counterweight block slides towards the first correction rod. In the shifted state, the support force of the conveyor roller on the sagger is uneven, the weight on one side of the sagger pressed by the counterweight frame and counterweight block increases, and the force applied to the first correction rod as it folds up increases. The conveyor roller drives the roller to rotate instead of directly contacting the correction rod. With these four factors combined, the other side of the sagger is preferentially rotated and moved by the conveyor roller. When the two correction rods are on the same axis, the sagger can move normally. This solves the problem of the sagger shifting during placement, which could cause it to get stuck on the furnace wall or scrape against the furnace wall, affecting sintering.

[0022] By setting up a correction component and other structures, this invention ensures that when the sagger is rotated and moved normally by the conveyor roller, the supporting force of the conveyor roller on the sagger is uniform. The friction between the two guide plates will increase the resistance to the movement of the two guide plates relative to each other. Even if the correction work is completed and the counterweight is biased to one side of the correction component, it will not cause the difference in the downward bending force applied to the two correction rods to be too large, thus preventing the sagger from shifting twice.

[0023] This invention utilizes a combination of a correction component and auxiliary mechanisms. The correction rod, after being blocked by the conveyor roller, reciprocates and folds. The counterweight frame moves up and down and pulls the guide plate reciprocally via the guide rod. When the sagger is not on the central axis of the conveyor roller, if the sagger is too close to the furnace wall, the turntable will preferentially contact the inner wall of the support mechanism, pushing the device back to the correct trajectory. This prevents the sagger from getting stuck on the furnace wall. Furthermore, the intermittent movement of the turntable reduces the vibration caused by the turntable rotating and rolling on the support mechanism, thereby reducing the uneven sintering caused by vibration. Attached Figure Description

[0024] Figure 1 This is a first schematic diagram of the appearance structure of the present invention;

[0025] Figure 2 This is a schematic diagram showing the positions of the correction mechanism and the sagger after disassembly in this invention;

[0026] Figure 3 This is a second schematic diagram of the appearance structure of the present invention;

[0027] Figure 4 This is a front view of the alignment rod and conveyor roller structure of the present invention.

[0028] Figure 5 This is a schematic diagram showing the interaction between the protective frame of the present invention after offset and the conveying mechanism structure;

[0029] Figure 6 This is a schematic diagram showing the positions of the correction rod and the conveyor roller after the protective frame of the present invention has shifted.

[0030] Figure 7 This is a schematic diagram of the internal structure of the protective frame of the present invention.

[0031] Figure 8 This is a schematic diagram showing the cooperation between the positioner and the protective frame structure of the present invention.

[0032] In the diagram: 1. Conveying mechanism; 11. Support mechanism; 12. Conveying roller; 2. Sagger; 3. Protective frame; 4. Positioning mechanism; 41. Auxiliary frame; 42. Lug; 43. Positioner; 431. Gear; 432. Tooth plate; 433. Positioning column; 5. Correction assembly; 51. Counterweight frame; 52. Connecting rod; 53. Correction rod; 54. Roller; 55. Guide plate; 6. Counterweight block; 7. Auxiliary mechanism; 71. Push plate; 72. Turntable; 73. Push rod. Detailed Implementation

[0033] 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.

[0034] like Figures 1 to 8 As shown, the present invention provides a sagger deviation correction mechanism for a roller furnace, including a conveying mechanism 1 and a set of saggers 2 placed thereon, and further comprising;

[0035] A protective frame 3 is set on the outer periphery of the sagger 2;

[0036] Two correction components 5 are symmetrically arranged on the outer periphery of the protective frame 3;

[0037] One of the correction components 5 includes a counterweight frame 51 that is slidably mounted on the outer periphery of the protective frame 3. A connecting rod 52 is hinged to the outside of the counterweight frame 51. A correction rod 53 is hinged to the outer periphery of the protective frame 3. Two rollers 54 are rotatably mounted on the lower end of the correction rod 53. The end of the connecting rod 52 is hinged to the middle of the rollers 54. A guide plate 55 is hinged to the end of the counterweight frame 51.

[0038] The conveying mechanism 1 includes a support mechanism 11 and a conveying roller 12;

[0039] A counterweight 6 is fitted on both guide plates 55, and the correction rod 53 is located between two adjacent conveyor rollers 12.

[0040] The ends of the two guide plates 55 abut against each other, and the two guide plates 55 are combined into a whole, with the counterweight 6 movably sleeved on its outside.

[0041] Using the above solution: If the position of the crucible 2 along with the protective frame 3 shifts during placement, and it is no longer located on the center line of the conveyor roller 12, then the two correction components 5 will respectively appear in... Figure 5The state is such that the first correction rod 53 is located between two adjacent conveyor rollers 12, and the second correction rod 53 is located on top of the conveyor roller 12. For ease of subsequent reference, the first correction rod 53 will be referred to as the first correction rod 53 and the second correction rod 53 as the second correction rod 53.

[0042] Among them, the second correction rod 53 is folded and pushes the counterweight frame 51 to rise through the connecting rod 52, and is higher than the other counterweight frame 51. At this time, the two guide plates 55 are tilted, and the counterweight block 6 will slide towards the first correction rod 53, so that the load weight on the counterweight frame 51 at the top of the first correction rod 53 increases.

[0043] First, in the offset state, the supporting force of the conveyor roller 12 on the sagger 2 is also uneven. Second, the heavier counterweight frame 51 presses more on one side of the sagger 2 than on the other side. Third, the force applied to the correction rod 53 by the connecting rod 52 to fold downward increases. Therefore, when the conveyor roller 12 rotates and moves the sagger 2, the first correction rod 53 will be more difficult to fold than in the initial state. Finally, there is a roller 54 on the correction rod 53. The roller 54 always contacts the conveyor roller 12 first. Therefore, the rotation of the conveyor roller 12 will drive the roller 54 to rotate, instead of the conveyor roller 12 directly contacting the correction rod 53. This causes the conveyor roller 12 to drive the correction rod 53 to move upward, which in turn causes the sagger 2 to experience stronger turbulence.

[0044] During this process, due to the uneven support force of the conveyor roller 12, the weight deviation of the counterweight 6, the restraint of the first correction rod 53, and the movable installation of the roller 54, the side of the sagger 2 with the second roller 54 is preferentially rotated and moved by the conveyor roller 12 during the rotation of the conveyor roller 12. Only when the two correction rods 53 are located between the same two adjacent conveyor rollers 12 can the sagger 2 move normally again.

[0045] At this time, the supporting force of the conveying roller 12 on the sagger 2 is uniform, and the height difference between the two counterweight frames 51 will inevitably pull the two guide plates 55 to move relative to each other. There is friction between the two guide plates 55 and the counterweight block 6. The existence of friction will increase the resistance to the relative movement of the two guide plates 55. Therefore, even if the counterweight block 6 is biased to either side of the correction component 5, it will not cause the two correction rods 53 to be subjected to a large difference in downward bending force, thus causing the sagger 2 to shift again. Unless there is a large obstruction on the conveying roller 12 or the influence of foreign objects at the bottom of the sagger 2 is too great, the sagger 2 will shift again. This actually solves the problem of the sagger 2 shifting position during placement, which causes it to get stuck on the furnace wall or scrape against the furnace wall, affecting sintering.

[0046] like Figures 1-6As shown, the correction rod 53 is arc-shaped. The counterweight frame 51 can not descend after falling to the hinge point at the top of the correction rod 53 due to gravity. At this time, the counterweight frame 51 pushes the correction rod 53 to fold through the connecting rod 52, but the correction rod 53 does not contact the outer periphery of the protective frame 3.

[0047] Using the above scheme: after the correction rod 53 passes through a conveyor roller 12, the counterweight frame 51 presses the correction rod 53 downward through the connecting rod 52. However, due to the limitation of the track, the correction rod 53 will not descend rapidly and violently impact the outer periphery of the protective frame 3 or the next conveyor roller 12, thereby avoiding the problem of uneven sintering caused by the vibration generated by the impact.

[0048] like Figures 1-8 As shown, an auxiliary mechanism 7 is symmetrically installed on both sides of the protective frame 3;

[0049] One of the auxiliary mechanisms 7 includes a pusher plate 71 that is slidably mounted on the side of the protective frame 3. A turntable 72 is rotatably mounted on the pusher plate 71. The top of the pusher plate 71 is connected to the counterweight frame 51 via a pusher rod 73.

[0050] When the correction rod 53 passes through each conveyor roller 12, it can be blocked by the conveyor roller 12 and repeatedly folded. The folding of the correction rod 53 can push the counterweight frame 51 to move up and down through the connecting rod 52.

[0051] The counterweight frame 51 moves back and forth, and the position of the push plate 71 can be changed by the push rod 73.

[0052] Using the above scheme: when the conveyor roller 12 drives the sagger 2 to move normally, the correction rod 53 is blocked by the conveyor roller 12 and is in a reciprocating flipping state, that is, the counterweight frame 51 moves up and down back and forth, and pulls the pusher plate 71 and the turntable 72 to move back and forth on the horizontal plane through the pusher rod 73. The turntable 72 can move outward intermittently. When the position of the sagger 2 is not on the central axis of the conveyor roller 12, if the sagger 2 is too close to the furnace wall, the turntable 72 will first contact the inner wall of the support mechanism 11, thereby pushing the device back to the correct trajectory, further preventing the sagger 2 from getting stuck on the furnace wall;

[0053] Furthermore, by intermittently causing the turntable 72 to abut against the inner wall of the support mechanism 11, the vibration caused by the rotation of the turntable 72 and its rolling on the support mechanism 11 can be reduced, thereby reducing the uneven sintering caused by vibration.

[0054] like Figures 1-8 As shown, a positioning mechanism 4 is provided inside the protective frame 3. The positioning mechanism 4 includes an auxiliary frame 41, and a set of positioners 43 are provided in the auxiliary frame 41. Each positioner 43 is located in the inner wall of the protective frame 3.

[0055] The positioner 43 includes a gear 431 rotatably mounted in the inner wall of the protective frame 3, a toothed plate 432 that meshes with the gear 431 installed at the bottom of the auxiliary frame 41, and a positioning post 433 movably engaged in the inner wall of the protective frame 3, with the positioning post 433 threadedly connected to the gear 431.

[0056] Using the above scheme: Before the protective frame 3 is fitted onto the crucible 2, the auxiliary frame 41 needs to be pulled first, so that it drives the toothed plate 432 to rise and drive the gear 431 to rotate. Since the positioning post 433 is engaged with the inner wall of the protective frame 3, the positioning post 433 will extend into the inner wall of the protective frame 3, and finally its side is on the same plane as the inner wall of the protective frame 3.

[0057] After the protective frame 3 is placed on the crucible 2, the auxiliary frame 41 is released and it naturally descends. The toothed plate 432 is pushed to rotate in the opposite direction again. At this time, the positioning pin 433 extends into the interior of the protective frame 3, thus closely adhering to the outer periphery of the crucible 2. This can effectively fix the crucible 2. Gravity serves as the driving force for the positioning pin 433, and the thread also has a self-locking capability, which greatly reduces the number of structures and makes the design of the positioning mechanism 4 more reasonable and applicable to actual situations.

[0058] There are several positioners 43, which are located in the inner wall of the protective frame 3. This ensures that at least two opposite surfaces can be fixed by the positioning post 433 when the device is working, thereby improving the applicability of the device.

[0059] like Figures 1-8 As shown, the side of the positioning post 433 is on the same side as the inner wall of the protective frame 3. Both ends of the top of the auxiliary frame 41 are threaded with a hanging ear 42. All the structures in the correction mechanism are made of high temperature resistant materials.

[0060] Using the above solution: If the volume of the sagger 2 is large, other structures also need to be increased proportionally, which will directly increase the weight of the device. In order to reduce labor costs, when using hoisting equipment, the device can be moved by the lugs 42. The lugs 42 are threaded on the auxiliary frame 41, so the auxiliary frame 41 can be pulled directly during hoisting, thereby causing the positioning column 433 to be in a retracted state and to be more conveniently installed on the sagger 2, further reducing the workflow. An anti-falling mechanism is also provided between the toothed plate 432 and the protective frame 3 to prevent the toothed plate 432 from falling directly from the inside of the protective frame 3 during hoisting.

[0061] Working principle and usage process of this invention:

[0062] If the sagger 2 is misaligned, one of the correction rods 53 is located between two adjacent conveyor rollers 12, and the other correction rod 53 is located on top of the conveyor roller 12;

[0063] The correction rod 53 located at the top of the conveyor roller 12 is folded up and pushes the counterweight frame 51 to rise through the connecting rod 52, and is higher than the other counterweight frame 51. The counterweight block 6 slides to the lower correction rod 53 through the inclined guide plate 55, increasing the load weight of its top counterweight frame 51.

[0064] In the offset state, the supporting force of the conveyor roller 12 on the sagger 2 is uneven. The heavier counterweight frame 51 presses more heavily on one side of the sagger 2, and the force applied to the correction rod 53 through the connecting rod 52 to fold downward increases. When the conveyor roller 12 rotates to move the sagger 2, the correction rod 53 is more difficult to fold. The rotation of the conveyor roller 12 will drive the roller 54 to rotate, instead of the conveyor roller 12 directly contacting the correction rod 53, so that the conveyor roller 12 drives the correction rod 53 to move upward.

[0065] Therefore, during the rotation of the conveyor roller 12, one side of the protective frame 3 of the correction rod 53 located above the conveyor roller 12 is preferentially rotated and moved by the conveyor roller 12 until the two correction rods 53 are located between the same two adjacent conveyor rollers 12, and only then can the casket 2 move normally.

[0066] 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.

[0067] 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 sagger deviation correction mechanism for a roller furnace, comprising a conveying mechanism (1) and a set of saggers (2) placed thereon, characterized in that, Also includes; A protective frame (3) is set on the outer periphery of the sagger (2); Two correction components (5) are symmetrically arranged on the outer periphery of the protective frame (3); One of the correction components (5) includes a counterweight frame (51) slidably mounted on the outer periphery of the protective frame (3), a connecting rod (52) hinged to the outside of the counterweight frame (51), a correction rod (53) hinged to the outer periphery of the protective frame (3), two rollers (54) rotatably mounted on the lower end of the correction rod (53), the end of the connecting rod (52) hinged to the middle of the rollers (54), and a guide plate (55) hinged to the end of the counterweight frame (51). The conveying mechanism (1) includes a support mechanism (11) and a conveying roller (12). A counterweight (6) is fitted on both guide plates (55), and the correction rod (53) is located between two adjacent conveyor rollers (12); The ends of the two guide plates (55) abut against each other, and the two guide plates (55) merge into a whole and the counterweight (6) is movably sleeved on its outside.

2. The sagger deviation correction mechanism for the roller furnace according to claim 1, characterized in that: The correction rod (53) is arc-shaped. The counterweight frame (51) can not descend after falling to the hinge point at the top of the correction rod (53) due to gravity. At this time, the counterweight frame (51) pushes the correction rod (53) to fold through the connecting rod (52), but the correction rod (53) does not contact the outer periphery of the protective frame (3).

3. The sagger deviation correction mechanism for the roller furnace according to claim 1, characterized in that: An auxiliary mechanism (7) is symmetrically installed on both sides of the protective frame (3); One of the auxiliary mechanisms (7) includes a pusher plate (71) slidably mounted on the side of the protective frame (3), a turntable (72) is rotatably mounted on the pusher plate (71), and the top of the pusher plate (71) is connected to the counterweight frame (51) via a pusher rod (73).

4. The sagger deviation correction mechanism for the roller furnace according to claim 3, characterized in that: When the correction rod (53) passes through each conveyor roller (12), it can be blocked by the conveyor roller (12) and repeatedly folded. The folding of the correction rod (53) can push the counterweight frame (51) to move up and down through the connecting rod (52). The counterweight frame (51) moves back and forth, and the position of the push plate (71) can be changed by the push rod (73).

5. The sagger deviation correction mechanism for the roller furnace according to claim 1, characterized in that: The protective frame (3) is provided with a positioning mechanism (4), which includes an auxiliary frame (41). The auxiliary frame (41) is provided with a set of locators (43), and each locator (43) is located in the inner wall of the protective frame (3).

6. The sagger deviation correction mechanism for the roller furnace according to claim 5, characterized in that: The positioner (43) includes a gear (431) rotatably mounted in the inner wall of the protective frame (3), and a toothed plate (432) meshing with the gear (431) is installed at the bottom of the auxiliary frame (41). A positioning post (433) is movably engaged in the inner wall of the protective frame (3), and the positioning post (433) is threadedly connected to the gear (431).

7. The sagger deviation correction mechanism for the roller furnace according to claim 6, characterized in that: The side of the positioning column (433) is on the same side as the inner wall of the protective frame (3). Both ends of the top of the auxiliary frame (41) are threaded with a hanging ear (42). The structures in the correction mechanism are all made of high temperature resistant materials.

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