Conveying kiln car of graphite crucible tunnel kiln

Abstract

The invention belongs to the field of graphite crucible tunnel kilns, and particularly relates to a conveying kiln car of a graphite crucible tunnel kiln, which comprises a support and a kiln car arranged on the support, the kiln car is provided with a clamping jaw mechanism, the clamping jaw mechanism comprises a fixing frame, a supporting clamp and a binding belt device, the fixing frame is fixedly connected with the tail end of a lifting arm, and the supporting clamp is fixedly connected with the tail end of the lifting arm. The supporting clamp is arranged at the lower end of the fixing frame in a scissor shape, the binding belt device is arranged on the upper side of the fixing frame, the binding belt device comprises a belt body and a winding shaft, and the belt body pulls the graphite crucible to incline by means of rotation of the winding shaft. The belt body pulls the graphite crucible to incline, the supporting clamps are clamped into the gaps to support the bottom of the graphite crucible, most supporting force is shared through the supporting clamps, side wall stress is reduced, damage in the lifting and conveying process is avoided, the workshop environment is conveniently maintained, the danger of fragment falling is avoided, the energy-saving technology can be smoothly implemented, and the production efficiency is improved. And after discharging, the graphite crucible is subjected to defect treatment or elimination in the trimming link in a unified manner.

Description

Technical Field

[0001] The present invention belongs to the field of energy-saving processes for graphite crucible tunnel kilns, and particularly relates to a conveying kiln car for a graphite crucible tunnel kiln. Background Art

[0002] After die-casting and forming, the graphite crucible can be sold as a finished product after being air-dried, baked, and shaped. The graphite crucible can be used to hold powders that need to be baked at high temperatures, such as the negative electrode powder of new energy batteries. In order to save energy and improve the production efficiency per unit time, the energy-saving process is to directly pour the negative electrode powder into the blank of the graphite crucible after air-drying, and then send the graphite crucible into the tunnel kiln for baking, so that the graphite crucible and the negative electrode powder contained therein are baked simultaneously, making full use of fuel and process time, thereby achieving the effect of energy conservation and efficiency improvement.

[0003] The tunnel kiln uses a pusher plate for conveying. The pusher plates push against each other on the slideway of the tunnel kiln to move forward. The baked graphite crucibles are pushed out from the tail end of the tunnel kiln. Subsequently, workers lift the graphite crucibles off the pusher plates of the tunnel kiln through straps or lifting clamps. The pusher plates are recycled to the entrance of the tunnel kiln for reuse. The graphite crucibles are hoisted onto the conveying roller path and sent to the unloading station along the conveying roller path, and are turned and shaped after unloading.

[0004] However, the implementation of this energy-saving process also brings certain drawbacks. Since the graphite crucibles are baked in a blank state, there may be defects such as cracks and breakages. Therefore, using the traditional hoisting method, once there are defects in the graphite crucibles, it is easy to cause the graphite crucibles to break, and the internal negative electrode powder spills, polluting the workshop environment and causing material waste. Therefore, in the transfer and conveying link at the tail end of the tunnel kiln, workers need to operate carefully, but there are still cases where the crucibles break due to improper force application of the clamping jaws, which restricts the popularization of the energy-saving process. Summary of the Invention

[0005] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a conveying kiln car for a graphite crucible tunnel kiln, which can improve the safety during the transfer and conveying of graphite crucibles from the tail end of the tunnel kiln, reduce the frequency of graphite crucible breakage, and improve production efficiency.

[0006] The specific technical solution adopted by the present invention is:

[0007] A conveying kiln car for a graphite crucible tunnel kiln, comprising a bracket mounted on the rear end of the tunnel kiln, a kiln car being arranged on the bracket, the kiln car being reciprocated between the rear end of the tunnel kiln and a conveying roller by means of a track arranged on the bracket, the kiln car being connected to a clamping mechanism by means of a lifting arm, the lifting arm having the freedom to be lifted and lowered relative to the kiln car, the clamping mechanism comprising a fixed frame, a supporting clamp and a binding device, the fixed frame being fixedly connected to the end of the lifting arm, the supporting clamp being arranged in a scissor-like shape at the lower end of the fixed frame, the binding device being arranged on the upper side of the fixed frame, the binding device comprising an N-shaped belt body and a winding shaft arranged at the open end of the belt body, the belt body pulling the graphite crucible to tilt by means of the rotation of the winding shaft, and the supporting clamp having the freedom to swing to the bottom gap where the graphite crucible tilts and tilts.

[0008] A mounting frame is provided at the bottom of the fixed frame, and a driving gear and a passive gear are provided on the mounting frame. Two groups of support clips are provided and are respectively fixedly connected to the rotating shafts of the driving gear and the passive gear. The rotating shaft of the driving gear is also connected to a closing motor. The driving gear has a degree of rotational freedom with the help of the driving of the closing motor. The driving gear meshes with the passive gear for transmission and drives the two groups of support clips to close or open.

[0009] The free end of the support clamp is provided with a support sheet, and the support sheet is inserted into the bottom gap of the inclined and tilted graphite crucible with the help of the swing of the support clamp.

[0010] The mounting frame is also provided with a top angle, which abuts against one side of the bottom of the graphite crucible and limits the bottom of the other side of the graphite crucible so that it tilts up as the belt body is pulled.

[0011] The fixed frame is of a door-shaped structure and a slider is nested in the gap of the fixed frame. The slider has the freedom to slide up and down along the gap of the fixed frame. The slider is provided with a limiting pad that abuts against the graphite crucible. The limiting pad is provided with a protruding platform and an inwardly contracted retracting platform, and the protruding platform is located above the retracting platform.

[0012] A lifting motor is fixedly arranged on the slider, a lifting gear is arranged at the output end of the lifting motor, a rack is arranged on the inner wall of the gap of the fixed frame, and the lifting motor drives the slider to rise and fall in the gap of the fixed frame by means of the meshing of the lifting gear and the rack.

[0013] The reeling shaft is symmetrically arranged on both sides of the fixed frame. A reeling motor is also arranged on the fixed frame. The reeling motor is drivingly connected to the reeling shaft.

[0014] The through direction of the n-shaped grooves of the strip body is arranged along the vertical direction and is used to fit the graphite crucible. The vertical height of the strip body is not less than the width between the two free ends of the strip body.

[0015] The beneficial effects of the present invention are as follows:

[0016] The kiln car of the present invention is used in conjunction with a tunnel kiln and is installed on the output track at the tail end of the tunnel kiln. The output track in this part is used to store and transport the graphite crucibles after roasting and cooling. The graphite crucible has a barrel-shaped structure with a sealed bottom. The bottom of the graphite crucible is thick, and cracks usually occur on the relatively weak top opening side edge and the side wall. Therefore, in the present invention, the graphite crucible is tilted by the belt body, so that a gap is formed at the bottom of the graphite crucible, and the support clamp is clamped into this gap to support the bottom of the graphite crucible. The upper end of the graphite crucible is tightened against the fixed frame of the jaw mechanism by the belt body.

[0017] Most of the supporting force is shared by the support clamp, reducing the force on the side wall, avoiding damage during lifting and transportation, facilitating the maintenance of the workshop environment, and avoiding the danger of debris falling, so that the energy-saving process can be smoothly implemented. After unloading, the graphite crucibles can be uniformly processed for defects or discarded in the trimming process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic diagram of the state when the graphite crucible is tilted;

[0020] Figure 3 is Figure 1 a schematic diagram of the left view direction of the jaw mechanism in

[0021] Figure 4 a schematic diagram of the top view direction of the support clamp;

[0022] In the drawings, 1, support; 2, kiln car; 3, track; 4, lifting arm; 5, fixed frame; 6, support clamp; 7, belt body; 8, take-up reel; 9, mounting frame; 10, driving gear; 11, driven gear; 12, closing motor; 13, support plate; 14, top corner; 15, slider; 16, limit pad; 17, lifting motor; 18, take-up motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present invention will be further described below in conjunction with the drawings and specific embodiments:

[0024] The specific embodiment is as Figure 1As shown, the present invention is a conveying kiln car 2 for a graphite crucible tunnel kiln, comprising a bracket 1 mounted at the rear end of the tunnel kiln, a kiln car 2 being arranged on the bracket 1, the kiln car 2 reciprocatingly moving between the rear end of the tunnel kiln and the conveying roller by means of a track 3 arranged on the bracket 1, the kiln car 2 being connected to a clamping mechanism by means of a lifting arm 4, the lifting arm 4 having the freedom to lift relative to the kiln car 2, the clamping mechanism comprising a fixed frame 5, a supporting clamp 6 and a binding device, the fixed frame 5 being fixedly connected to the end of the lifting arm 4, the supporting clamp 6 being arranged in a scissors shape at the lower end of the fixed frame 5, the binding device being arranged on the upper side of the fixed frame 5, the binding device comprising an n-shaped belt body 7 and a winding shaft 8 arranged at the open end of the belt body 7, the belt body 7 pulling the graphite crucible to tilt by means of the rotation of the winding shaft 8, the supporting clamp 6 having the freedom to swing to the bottom gap where the graphite crucible tilts and tilts.

[0025] Figure 1 The middle clamp mechanism is a cross-sectional diagram. The kiln car 2 of the present invention is used in conjunction with the tunnel kiln and is mounted on the output track 3 at the rear end of the tunnel kiln. The output track 3 of this part is used to store and transport the graphite crucible after roasting and cooling. The graphite crucible is a barrel-shaped structure with a bottom seal. The bottom of the graphite crucible is thick, and cracks usually occur on the relatively weak top opening side edge and side wall. Therefore, the present invention pulls the graphite crucible to tilt through the belt body 7, so that the bottom of the graphite crucible tilts up a gap, and clamps the support clamp 6 into the gap, thereby supporting the bottom of the graphite crucible. The upper end of the graphite crucible is tightened against the fixed frame 5 of the clamp mechanism through the belt body 7. That is, most of the supporting force is shared by the support clamp 6, the force on the side wall is reduced, and damage during the lifting and transportation process is avoided. It is also convenient to maintain the workshop environment and avoid the risk of falling fragments, so that the energy-saving process can be smoothly implemented. The graphite crucible after unloading can be uniformly processed or eliminated in the finishing link.

[0026] Further, such as Figure 1 and Figure 3 As shown, a mounting frame 9 is provided at the bottom of the fixed frame 5, and a driving gear 10 and a passive gear 11 are provided on the mounting frame 9. Two groups of support clips 6 are provided and are fixedly connected to the rotating shafts of the driving gear 10 and the passive gear 11 respectively. The rotating shaft of the driving gear 10 is also connected to a closing motor 12. The driving gear 10 has a rotational freedom by means of the drive of the closing motor 12. The driving gear 10 is meshed with the passive gear 11 for transmission and drives the two groups of support clips 6 to close or open.

[0027] The mounting frame 9 is arranged at the front side of the fixed frame 5 and protrudes from the side wall of the fixed frame 5, thereby providing an avoidance space for the inclination of the graphite crucible. By rotating the closing motor 12, the driving gear 10 connected to its output end is driven to rotate, and the driving gear 10 drives the passive gear 11 to rotate through meshing transmission. The supporting clips 6 on both sides are fixedly connected to the driving gear 10 and the passive gear 11 through their respective rotating shafts, thereby achieving the action of driving the supporting clips 6 on both sides to close and open at the same time.

[0028] Further, such as Figure 4 As shown, a support sheet 13 is provided at the free end of the support clamp 6, and the support sheet 13 is inserted into the bottom gap of the tilted and tilted graphite crucible with the help of the swing of the support clamp 6.

[0029] Further, such as Figure 4 As shown, the mounting frame 9 is further provided with a top angle 14, which abuts against one side of the bottom of the graphite crucible and limits the bottom of the other side of the graphite crucible so that it tilts up as the belt body 7 is pulled.

[0030] Furthermore, the fixed frame 5 is a door-shaped structure and a slider 15 is nested in the gap of the fixed frame 5. The slider 15 has the freedom to slide up and down along the gap of the fixed frame 5. The slider 15 is provided with a limit pad 16 that abuts against the graphite crucible. The limit pad 16 is provided with a protruding platform and an inwardly contracted retracting platform, and the protruding platform is located above the retracting platform. A lifting motor 17 is fixedly provided on the slider 15, and a lifting gear is provided at the output end of the lifting motor 17. A rack is provided on the inner wall of the gap of the fixed frame 5. The lifting motor 17 drives the slider 15 to rise and fall in the gap of the fixed frame 5 by means of the meshing of the lifting gear and the rack.

[0031] The reel 8 is symmetrically arranged on both sides of the fixed frame 5, and a reel motor 18 is also arranged on the fixed frame 5, and the reel motor 18 is transmission-connected with the reel 8. With the reeling of the reel 8, the extended belt 7 is retracted, thereby tightening the graphite crucible.

[0032] The through direction of the n-shaped groove of the strip body 7 is arranged along the vertical direction and is used to fit the graphite crucible. The vertical height of the strip body 7 is not less than the width between the two free ends of the strip body 7.

[0033] When the present invention is in use, the kiln car 2 is transported along the track 3 to the upper part of the graphite crucible to be conveyed. The clamping support 6 remains open. The lifting motor 17 drives the slider 15 to move upward to a preset upper position. At this position, the inward receiving platform of the limit cushion block 16 provided on the slider 15 can abut and limit the edge of the tilted graphite crucible. The belt body 7 of the present invention is made of sheet rubber material and nylon belts are embedded inside to ensure strength. At the same time, the belt body 7 has a relatively large width in the vertical direction, so that the belt body 7 can support the n-shaped structure under its own hardness. If the belt body 7 fails to expand successfully, it can be expanded by the on-site personnel's auxiliary pulling, and is sleeved onto the graphite crucible as the clamping jaw mechanism moves downward. Subsequently, under the winding and pulling of the winding shaft 8 driven by the winding motor 18, the belt body 7 surrounds the side wall of the graphite crucible and pulls the graphite crucible to an inclined state, as Figure 1 shown. At this time, the upper end of the graphite crucible abuts against the inward receiving platform, and the clamping support 6 at the lower end swings and closes and inserts into the tilted gap. Subsequently, the winding shaft 8 rotates in the reverse direction, and the belt body 7 relaxes. The graphite crucible resets in the direction of being straightened under the action of its own gravity. At this time, the edge of the graphite crucible disengages from the inward receiving platform. Subsequently, the lifting motor 17 rotates in the reverse direction to push the slider 15 to the preset lower position, and then the belt body 7 is tightened again. The graphite crucible tilts again and the side wall abuts against the surface of the protruding platform of the limit cushion block 16, so that the graphite crucible is stably clamped, that is, as Figure 1 shown, so as to ensure that the relatively weak edge is not stressed during the conveying process.

[0034] The kiln car 2 of the present invention is a truss gantry crane, as Figure 1 shown. The lifting arm 4 of the kiln car 2 is lifted by means of gear-rack transmission. After the graphite crucible with a stable clamp is lifted, the kiln car 2 moves along the track 3 to the upper part of the conveying roller path. The lifting arm 4 moves downward until the bottom of the graphite crucible contacts the surface of the conveying roller path. The clamping support 6 opens, and then the belt body 7 relaxes. The graphite crucible is straightened on the surface of the conveying roller path under the action of its own center of gravity. Subsequently, the lifting arm 4 is lifted, and the slider 15 resets, entering the next round of conveying operation.

Claims

1. A conveying kiln car for a graphite crucible tunnel kiln, comprising a bracket (1) erected at the tail end of the tunnel kiln, a kiln car (2) is arranged on the bracket (1), the kiln car (2) reciprocates between the tail end of the tunnel kiln and a conveying roller path by means of a track (3) arranged on the bracket (1), the kiln car (2) is connected with a clamping jaw mechanism by means of a lifting arm (4), the lifting arm (4) has a degree of freedom of lifting relative to the kiln car (2), and is characterized in that: The clamp mechanism comprises a fixed frame (5), a support clamp (6) and a binding device. The fixed frame (5) is fixedly connected to the end of the lifting arm (4). The support clamp (6) is arranged in a scissor-like manner at the lower end of the fixed frame (5). The binding device is arranged on the upper side of the fixed frame (5). The binding device comprises an N-shaped belt body (7) and a winding shaft (8) arranged at the open end of the belt body (7). The belt body (7) pulls the graphite crucible to tilt by rotating the winding shaft (8). The support clamp (6) has the freedom to swing to the bottom gap of the graphite crucible when it tilts and tilts.

2. The conveying kiln car of a graphite crucible tunnel kiln according to claim 1, wherein: The bottom of the fixed frame (5) is provided with a mounting frame (9), and a driving gear (10) and a passive gear (11) are provided on the mounting frame (9). Two groups of the supporting clips (6) are provided and are respectively fixedly connected to the rotating shafts of the driving gear (10) and the passive gear (11). The rotating shaft of the driving gear (10) is also connected to a closing motor (12). The driving gear (10) has a rotational freedom by means of the driving of the closing motor (12). The driving gear (10) and the passive gear (11) are meshed and driven to drive the two groups of supporting clips (6) to close or open.

3. The conveying kiln car of a graphite crucible tunnel kiln according to claim 2, wherein: A support sheet (13) is provided at the free end of the support clamp (6), and the support sheet (13) is inserted into the bottom gap of the tilted and raised graphite crucible with the help of the swing of the support clamp (6).

4. The conveying kiln car of a graphite crucible tunnel kiln according to claim 2, characterized in that: The mounting frame (9) is also provided with a top corner (14), which abuts against one side of the bottom of the graphite crucible and limits the bottom of the other side of the graphite crucible so that it tilts up as the belt body (7) is pulled.

5. The conveying kiln car of a graphite crucible tunnel kiln according to claim 1, wherein: The fixed frame (5) is of a door-shaped structure and a slider (15) is nested in the gap of the fixed frame (5). The slider (15) has the freedom to slide up and down along the gap of the fixed frame (5). The slider (15) is provided with a limiting pad (16) that abuts against the graphite crucible. The limiting pad (16) is provided with a protruding platform and an inwardly contracted retracting platform, and the protruding platform is located above the retracting platform.

6. The conveying kiln car of a graphite crucible tunnel kiln according to claim 5, characterized in that: A lifting motor (17) is fixedly arranged on the slider (15), a lifting gear is arranged at the output end of the lifting motor (17), a rack is arranged on the inner wall of the slit of the fixed frame (5), and the lifting motor (17) drives the slider (15) to rise and fall in the slit of the fixed frame (5) by means of the meshing of the lifting gear and the rack.

7. The conveying kiln car of a graphite crucible tunnel kiln according to claim 1, wherein: The reeling shaft (8) is symmetrically arranged on both sides of the fixed frame (5), and a reeling motor (18) is also arranged on the fixed frame (5), and the reeling motor (18) is transmission-connected to the reeling shaft (8).

8. The conveying kiln car of a graphite crucible tunnel kiln according to claim 1, characterized in that: The through direction of the n-shaped groove of the strip body (7) is arranged along the vertical direction and is used to fit a graphite crucible. The vertical height of the strip body (7) is not less than the width between the two free ends of the strip body (7).

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