Multi-layer rack unstacking device in annealing furnace

Abstract

The utility model discloses a multilayer rack unstacking device in an annealing furnace, which comprises a furnace top fixed guide frame, a furnace top lifting frame, a lifting driving device, two clamping arm rods and two side pushing driving devices, the furnace top fixed guide frame is arranged at the top of the annealing furnace, the furnace top lifting frame is arranged on the furnace top fixed guide frame, and the lifting driving device is arranged on the furnace top lifting frame. The upper portions of the two clamping arm rods are rotationally connected with the furnace top lifting frame respectively, the top ends of the two clamping arm rods are connected with the two side pushing driving devices respectively, and the bottom ends of the two clamping arm rods extend downwards into the annealing furnace. The material rack conveying device is arranged on the annealing furnace, so that material racks in the annealing furnace can be stacked up and down, workpieces are stacked up and down, when the material racks are conveyed out of the annealing furnace, the material racks are clamped and lifted upwards through the material rack conveying device, the annealing furnace only outputs one material rack for quenching treatment each time, and after the material racks in the annealing furnace are conveyed out, the workpieces are conveyed out through the material rack conveying device. And the material racks are placed on the conveying rollers of the material returning furnace, so that the material racks are output from the material returning furnace one by one.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of annealing furnace in-furnace multilayer rack disassembling and stacking device, belong to heat treatment equipment technical field. BACKGROUND

[0002] Annealing furnace is common heat treatment equipment, and the heat treatment of workpiece is usually more complex, such as air quenching treatment in air after annealing, etc., if using single-layer rack in annealing furnace, in the case of meeting factory capacity, more workpieces are annealed at the same time, the heat treatment equipment will be very long, usually due to the production site limit of heat treatment equipment, it cannot be placed too long heat treatment equipment, and single-layer rack is changed into multilayer rack stacked together, so although the length of heat treatment equipment is shortened, it can be effectively placed in the factory workshop, but several racks are stacked together, due to the thickness of workpiece and the height limit of rack, air quenching treatment cannot be carried out on multilayer rack in effective time, so the current way to meet the factory capacity is to increase the length of annealing furnace. SUMMARY

[0003] The utility model aims at providing a kind of annealing furnace in-furnace multilayer rack disassembling and stacking device, to solve the technical defects that heat treatment equipment in prior art cannot air quenching on the workpiece on multilayer rack, and can only lengthen heat treatment equipment, and too long heat treatment equipment is limited by site.

[0004] To solve the above problems, the technical scheme adopted by the utility model is: annealing furnace multilayer material frame disstacking device, including furnace top fixed guide frame, furnace top lifting frame, lifting drive device, two clamping arm rods and two side pushing drive devices, the furnace top fixed guide frame is arranged at the top of the annealing furnace, the furnace top lifting frame is arranged on the furnace top fixed guide frame and can move up and down relative to the furnace top fixed guide frame, the lifting drive device is connected with the furnace top lifting frame and is used for providing power for the movement of the furnace top lifting frame on the furnace top fixed guide frame, the upper parts of the two clamping arm rods are rotatably connected with the furnace top lifting frame, the top ends of the two clamping arm rods are connected with the two side pushing drive devices respectively, the bottom ends of the two clamping arm rods downwardly extend into the annealing furnace, the two clamping arm rods are rotated relative to the furnace top lifting frame from the direction of the material frame on both sides to the direction of clamping the material frame, then the furnace top lifting frame is moved upwardly for lifting the material frame upwardly from the conveying roller of the annealing furnace, the clamping arm rod for clamping the material frame is moved downwardly, then is rotated to the direction of being away from the material frame to release the material frame, and the material frame is placed on the conveying roller of the annealing furnace.The utility model is arranged on the annealing furnace, can make the material frame be placed in the annealing furnace in the up-down stack, thereby making the workpieces be stacked together, when outputting from the annealing furnace, the utility model clamps the material frame and lifts it upwardly, so that the annealing furnace outputs only one material frame for quenching treatment each time, and after the material frame is conveyed out of the annealing furnace, the material frame is placed on the conveying roller of the annealing furnace, and the material frame is stacked up and down, when the same number of workpieces enter the annealing furnace, the length of the annealing furnace can be reduced, thereby reducing the length of the annealing furnace and reducing the limitation of the site on the annealing furnace.

[0005] As a further improvement of the utility model, the bottom ends of the two clamping arm rods are fixed with support plates on the side facing each other, which are used for cooperating with the supporting rods fixed on both sides of the material frame in the use state. The utility model cooperates with the supporting rods on both sides of the material frame by arranging the support plates on the clamping arm rods, so as to avoid the downward sliding of the material frame relative to the clamping arm rods in the use state.

[0006] As a further improvement of the utility model, a through hole is formed in the top of the annealing furnace for the clamping arm rod to pass through, the width of the through hole in the left-right direction is greater than the width of the clamping arm rod in the left-right direction, so that the clamping arm rod can swing left and right freely, a sealing fiber cloth is fixed at the through hole in the top of the annealing furnace, the width of the sealing fiber cloth in the left-right direction is greater than the width of the through hole, the clamping arm rod passes through the sealing fiber cloth, and the sealing fiber cloth is used for keeping the sealing between the clamping arm rod and the top of the annealing furnace. The utility model opens the through hole on the annealing furnace, so as to facilitate the downward extension of the clamping arm rod into the annealing furnace, the width of the through hole is greater than the width of the clamping arm rod, so as to provide sufficient space for the left-right swinging of the clamping arm rod, and the utility model arranges the sealing fiber cloth, so as to improve the sealing between the clamping arm rod and the annealing furnace.

[0007] As a further improvement of the utility model, the top end and the bottom end of each through hole are fixed with a piece of sealing fiber cloth respectively, and the clamping arm rod passes through the sealing fiber cloth at the top end and the bottom end of the through hole.

[0008] As a further improvement of the utility model, the material rack descending positioning frame is located at the bottom of the annealing furnace, and the furnace top lifting frame is located directly above the material rack descending positioning frame, the left and right sides of the material rack descending positioning frame extend upwards from between the conveying rollers of the annealing furnace, and are used for positioning the material rack when the clamping arm rod places the material rack downwards.

[0009] As a further improvement of the utility model, the left and right sides of the furnace top fixed guide frame are provided with guide rails in the vertical direction, the guide rails on the left and right sides of the furnace top fixed guide frame are oppositely arranged, the left and right sides of the furnace top lifting frame are provided with guide wheels, and the guide wheels on the left and right sides of the furnace top lifting frame are matched with the guide rails on the left and right sides of the furnace top fixed guide frame respectively.

[0010] As a further improvement of the utility model, the lifting driving device is a lifting driving oil cylinder, the cylinder body of the lifting driving oil cylinder is fixed to the top of the annealing furnace, the piston rod of the lifting driving oil cylinder is upwardly connected with the furnace top lifting frame, and the piston rod of the lifting driving oil cylinder is used for driving the vertical movement of the furnace top lifting frame on the furnace top fixed guide frame.

[0011] As a further improvement of the utility model, the side pushing driving device is a side pushing driving oil cylinder, the cylinder body of the side pushing driving oil cylinder is rotatably arranged on the furnace top lifting frame, the piston rod of the side pushing driving oil cylinder is rotatably connected with the upper end of the clamping arm rod, and the piston rod of the side pushing driving oil cylinder is used for driving the swinging of the clamping arm rod.

[0012] As a further improvement of the utility model, the piston rods of the two side pushing driving oil cylinders are oppositely arranged or arranged in directions away from each other, and the piston rods of the two side pushing driving oil cylinders are synchronously elongated or synchronously contracted.

[0013] As further improvement of the utility model, each clamping arm rod comprises two arm rod bodies, the upper parts of the two arm rod bodies are rotationally connected with the furnace top lifting frame, the top ends of the two arm rod bodies are fixedly connected with the upper connecting rod, the side pushing driving device is connected with the upper connecting rod, and the front and rear ends of the supporting plate are fixedly connected with the bottom ends of the two arm rod bodies.

[0014] In conclusion, the utility model has the advantages of 1, the annealing furnace multi-layer rack disassembling device of the utility model can change the multi-layer rack in the furnace into single-layer rack under the condition of meeting the effective air quenching time of workpieces, and greatly reduces the use area of heat treatment equipment in the workshop.

[0015] 2, compared with the prior art heat treatment equipment that can only process single-layer racks, the utility model effectively increases the production capacity requirement of the heat treatment equipment.

[0016] 3, the utility model uses lifting driving oil cylinders and side pushing driving oil cylinders, which have lower failure rate and reliable operation compared with the use of cylinders.

[0017] 4, the utility model drives the two clamping arm rods on both sides of the furnace through the side pushing driving oil cylinder, and when the clamping arm rods are loosened, the lifting driving oil cylinder can drive the clamping arm rods to move up and down to the specified position, and then the side pushing driving oil cylinder clamps the specified rack, which is not affected by the number of layers of the rack, and can divide the multi-layer rack into single-layer, double-layer, three-layer and other layer racks in the high-temperature furnace.

[0018] 5, the utility model uses furnace top opening sealing multi-layer sealing fiber cloth, which effectively adheres to the two clamping arm rods, reduces the heat loss caused by the opening of the furnace, saves the use energy consumption caused by the heating of the equipment, such as the reduction of natural gas or power consumption. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the front view of the utility model (the clamping arm rod clamps the rack).

[0020] Figure 2 It is the front view of the utility model (the clamping arm rod loosens the rack).

[0021] Figure 3 It is the left view of the utility model.

[0022] Wherein: 1, the furnace top fixed guide frame; 2, the furnace top lifting frame; 3, lifting drive oil cylinder; 4, clamping arm; 5, side push drive oil cylinder; 6, material frame; 7, conveying roller; 8, brace; 9, sealing fiber cloth; 10, material frame descending positioning frame; 11, guide rail; 12, guide wheel; 13, arm body; 14, upper connecting rod; 15, positioning support rod; 16, lower positioning connecting rod; 17, upper positioning connecting rod; 18, positioning rod; 19, furnace top guide support rod; 20, front and rear connecting rod; 21, left and right connecting rod; 22, lifting support rod; 23, bottom connecting rod; 24, top connecting rod; 25, oil cylinder connecting rod; 26, support plate. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application will be further described in conjunction with the accompanying drawings.

[0024] As Figures 1 to 3 shown in the annealing furnace multi-layer material frame disassembling device, including furnace top fixed guide frame 1, furnace top lifting frame 2, lifting drive device, two clamping arms 4 and two side push drive devices.

[0025] As Figures 1 to 3 shown, the furnace top fixed guide frame 1 is fixed on the top of the annealing furnace, and the furnace top fixed guide frame 1 is located on the top of the discharge port end of the annealing furnace, and the furnace top lifting frame 2 is arranged on the furnace top fixed guide frame 1 and can move up and down relative to the furnace top fixed guide frame 1, and the lifting drive device is connected with the furnace top lifting frame 2 and is used for providing power for the movement of the furnace top lifting frame 2 on the furnace top fixed guide frame 1, that is, the lifting drive device in the present application drives the furnace top lifting frame 2 to move upward or downward on the furnace top fixed guide frame 1.

[0026] As Figure 1 and Figure 2 shown, the upper parts of the two clamping arms 4 are respectively connected with the furnace top lifting frame 2, the top ends of the two clamping arms 4 are respectively connected with the two side push drive devices, wherein the side push drive devices are installed on the furnace top lifting frame 2, and the bottom ends of the two clamping arms 4 extend into the annealing furnace downward and move up and down synchronously with the movement of the furnace top lifting frame 2, wherein when the furnace top lifting frame 2 moves downward to the lowest position and the clamping arms 4 are in the vertical state, the bottom ends of the clamping arms 4 are still located above the conveying rollers 7 in the annealing furnace, and after the two clamping arms 4 are rotated from both sides to the direction of the material frame 6 relative to the furnace top lifting frame 2 and clamp the material frame 6, the clamping arms 4 move upward with the furnace top lifting frame 2 to lift the material frame 6 upward from the conveying rollers 7 in the annealing furnace, and after the clamping arms 4 clamping the material frame 6 move downward, the clamping arms 4 are rotated to the direction away from the material frame 6 to release the material frame 6, so as to place the material frame 6 on the conveying rollers 7 in the annealing furnace.

[0027] The clamping arm rod 4 in the utility model is first moved upward to the second rack 6 from the bottom to the top before the clamping rack 6, and then is driven by the side pushing driving device to rotate towards the direction of the rack 6, clamping the remaining stacked racks 6 except the lowermost one, and then the clamping arm rod 4 is driven by the furnace top lifting frame 2 to move upward, the clamped rack 6 is lifted upward, and is separated from the lowermost rack on the conveying roller 7, at this time, the conveying roller 7 conveys the lowermost rack 6 out of the annealing furnace for air quenching treatment, after the lowermost rack 6 is conveyed out of the annealing furnace, the furnace top lifting frame 2 moves downward, the clamping arm rod 4 moves downward and places all the clamped racks 6 on the conveying roller 7, and then the clamping arm rod 4 is driven by the side pushing driving device to rotate away from the direction of the rack 6 to loosen all the racks 6, and then the clamping arm rod 4 is moved upward to the second rack 6 from the bottom to the top along with the furnace top lifting frame 2, and the foregoing action is repeated, so that the annealing furnace conveys one rack 6 at a time, and all the stacked racks 6 are conveyed out of the annealing furnace.

[0028] In order to prevent the rack 6 from sliding downward relative to the clamping arm rod 4 when the clamping arm rod 4 clamps the rack 6 in the use state, the utility model is fixed with a support plate 26 on the side of the bottom end of the two clamping arm rods 4, as shown in the drawings, the support plate 26 is in a horizontal state when the clamping arm rod 4 is in a vertical state, and a support rod 8 made of square steel is welded and fixed on the left and right sides of the rack 6, the support plate 26 is used for cooperating with the support rod 8 in the use state, the support plate 26 provides upward support for the support rod 8 from the bottom of the support rod 8, so that the entire rack 6 does not slide downward in the state that the clamping arm rod 4 clamps the rack 6, thereby ensuring that only one rack 6 is conveyed out of the annealing furnace at a time. Figure 3

[0029] The utility model opens the through hole for clamping arm rod 4 to pass in the top of annealing furnace, this through hole is rectangular hole, clamping arm rod 4 from this through hole downward stretches into annealing furnace, and the width of through hole in left and right directions is greater than the width of clamping arm rod 4 in left and right directions, so that clamping arm rod 4 can swing freely left and right, the top of annealing furnace is fixed with sealing fiber cloth 9 in through hole, as shown in the drawings, the width of this sealing fiber cloth 9 in left and right directions is greater than the width of through hole, namely the sealing fiber cloth 9 in the utility model is in the state of slack, clamping arm rod 4 passes sealing fiber cloth 9 and is sealed and fixed with clamping arm rod 4 with the mode of sticking, this sealing fiber cloth 9 is used for keeping the sealing of clamping arm rod 4 and the top of annealing furnace, and the sealing fiber cloth 9 is rectangular, and the edge thereof is pressed on the through hole edge on the annealing furnace with pressing plate and multiple bolts. Figure 1 Figure 2 ​​​

[0030] As Figures 1 to 3 shown, the utility model provides with the material frame down position frame 10, this material frame down position frame 10 is located at the bottom of annealing furnace and furnace top lifting frame 2 is located at the just above of material frame down position frame 10, the main body of material frame down position frame 10 is located below conveying roller 7 in annealing furnace, the left and right sides of material frame down position frame 10 upwardly extend from between conveying roller 7 of annealing furnace, for when the arm lever 4 of clamping is placed material frame, the material frame 6 is positioned. The material frame down position frame 10 in the utility model includes four position support rods 15, four lower position connecting rods 16 and two upper position connecting rods 17, wherein two lower position connecting rods 16 are set to the left and right sides in the front and back direction in annealing furnace, and the other two lower position connecting rods 16 are set along the left and right direction, and the two ends thereof are respectively welded and fixed with two lower position connecting rods 16 along the front and back direction, wherein the bottom end of two position support rods 15 is welded and fixed with two lower position connecting rods 16 on the left side, and the bottom end of the other two position support rods 15 is welded and fixed with two lower position connecting rods 16 on the right side, two upper position connecting rods 17 are all set along the left and right direction, and the two ends thereof are respectively welded and fixed with the upper part of position support rod 15 on the left and right sides, and the height of upper position connecting rod 17 does not exceed the height of conveying roller 7, to avoid the interference to the conveying of material frame 6, the top end of position support rod 15 extends to the above of conveying roller 7 from between conveying roller 7, and the top end between two position support rods 15 on the left side and the top end between two position support rods 15 on the right side are all welded and fixed with position rod 18, and two position rods 18 on the left and right sides position material frame 6 in the using state, so that material frame 6 is placed at the set position on conveying roller 7.

[0031] As Figures 1 to 3 shown, the structure of furnace top fixed guide frame 1 in the utility model includes four furnace top guide support rods 19, two front and back connecting rods 20 and two left and right connecting rods 21, the bottom end of four furnace top guide support rods 19 is detachably installed on the top of annealing furnace by bolt, and the projection of four furnace top guide support rods 19 on horizontal plane is located at four vertices of a rectangle, the front and back two ends of two front and back connecting rods 20 are fixedly connected with the top end of left two furnace top guide support rods 19 and right two furnace top guide support rods 19 respectively, and the left and right two ends of two left and right connecting rods 21 are fixedly connected with two front and back connecting rods 20 respectively. The guide rail 11 is arranged on four furnace top guide support rods 19 of furnace top fixed guide frame 1 along the vertical direction, and the guide rail 11 on the left and right sides of furnace top fixed guide frame 1 is arranged towards each other.

[0032] As Figures 1 to 3As shown, the furnace top lifting frame 2 includes four lifting support rods 22, four bottom connecting rods 23, and four top connecting rods 24. The four bottom connecting rods are connected end to end to form a rectangular frame, and the four top connecting rods 24 are also connected end to end to form a rectangular frame. The top ends of the four lifting support rods 22 are fixedly connected to the connection points of the four top connecting rods 24, and the bottom ends of the four lifting support rods 22 are fixedly connected to the connection points of the four bottom connecting rods 23, making the entire furnace top lifting frame 2 a cuboid frame structure. A hydraulic cylinder connecting rod 25 is fixedly connected to the middle of the left and right top connecting rods 24. The lifting drive device in this invention is a lifting drive hydraulic cylinder 3. The cylinder body of the lifting drive hydraulic cylinder 3 is fixed to the top of the annealing furnace, and the piston rod of the lifting drive hydraulic cylinder 3 moves upward and connects with the hydraulic cylinder of the furnace top lifting frame 2. The cylinder connecting rod 25 is connected, and the piston rod of the lifting drive cylinder 3 is extended and retracted to drive the furnace top lifting frame 2 to move vertically on the furnace top fixed guide frame 1. The top and bottom ends of the four lifting support rods 22 of the furnace top lifting frame 2 are each provided with a guide wheel 12 facing the guide rail 11. The guide wheels 12 on the left and right sides of the furnace top lifting frame 2 cooperate with the guide rails 11 on the left and right sides of the furnace top fixed guide frame 1, so that the furnace top lifting frame 2 can slide on the furnace top fixed guide frame 1. The side push drive device in this utility model is a side push drive cylinder 5. The cylinder body of the side push drive cylinder 5 is rotatably set on the cylinder connecting rod 25 of the furnace top lifting frame 2. The piston rod of the side push drive cylinder 5 is rotatably connected to the upper end of the clamping arm 4. The extension and retraction of the piston rod of the side push drive cylinder 5 is used to drive the clamping arm 4 to swing. In this invention, the piston rods of the two side-push drive cylinders 5 are arranged facing each other or in a direction away from each other, and the piston rods of the two side-push drive cylinders 5 extend or retract synchronously. In the optimal configuration of this invention, the piston rods of the two side-push drive cylinders 5 are arranged in a direction away from each other, and the two side-push drive cylinders 5 are located between the tops of the two clamping arms 4. The piston rods of the two side-push drive cylinders 5 extend synchronously, pushing the bottom ends of the clamping arms 4 to rotate in a direction closer to each other to clamp the material rack 6. The piston rods of the two side-push drive cylinders 5 retract synchronously, which can push the bottom ends of the clamping arms 4 to rotate in a direction farther from each other, thereby releasing and lowering the material rack 6.

[0033] like Figures 1 to 3 Figures 1 to 3 As shown, each clamping arm 4 in this utility model includes two arm bodies 13, one in the front and one in the rear. The upper part of the two arm bodies 13 is rotatably connected to the furnace top lifting frame 2. The top ends of the two arm bodies 13 are fixedly connected by an upper connecting rod 14. The free end of the piston rod of the side push driving cylinder 5 is rotatably connected to the middle part of the upper connecting rod 14. The front and rear ends of the support plate 26 are fixedly connected to the bottom ends of the two arm bodies 13, respectively. This can improve the stability of the clamping arm 4 when clamping the material rack 6.

[0034] The parts not particularly mentioned in the above description are all prior art or can be realized by prior art. Moreover, the specific implementation cases described in the utility model are only the preferred implementation cases of the utility model, and are not used to limit the implementation range of the utility model. That is, equivalent changes and modifications made according to the content of the utility model patent range should be regarded as the technical scope of the utility model.

Claims

1. A device for de-stacking a multi-layered magazine in an annealing furnace, characterized in that: The device comprises a furnace top fixed guide frame, a furnace top lifting frame, a lifting driving device, two clamping arm rods and two side pushing driving devices.

2. The annealing furnace in-furnace multi-tiered magazine de-stacking apparatus of claim 1, wherein: The bottom ends of the two clamping arm rods are fixed with support plates on the side facing each other, which are used to cooperate with the support rods fixed on the two sides of the material rack in the use state.

3. The annealing furnace in-furnace multi-tiered magazine de-stacking apparatus of claim 1, wherein: A through hole is formed on the top of the annealing furnace for the clamping arm rods to pass through, and the width of the through hole in the left-right direction is greater than the width of the clamping arm rods in the left-right direction, so that the clamping arm rods can swing freely left and right.

4. The annealing furnace in-furnace multi-tiered rack de-stacking apparatus of claim 3, wherein: The top end and the bottom end of each through hole are fixed with a piece of sealing fiber cloth, and the clamping arm rods pass through the sealing fiber cloths at the top end and the bottom end of the through hole.

5. The annealing furnace in-furnace multi-tiered magazine de-stacking apparatus of claim 1, wherein: The device further comprises a material rack descending positioning frame, which is located at the bottom of the annealing furnace and above the furnace top lifting frame.

6. The annealing furnace in-furnace multi-tiered magazine de-stacking apparatus of claim 1, wherein: The left and right sides of the material rack descending positioning frame extend upward from between the conveying rollers of the annealing furnace, which is used to position the material rack when the clamping arm rods place the material rack downward.

7. The annealing furnace in-furnace multi-tiered magazine de-stacking apparatus of claim 6, wherein: The left and right sides of the furnace top fixed guide frame are provided with guide rails in the vertical direction, and the guide rails on the left and right sides of the furnace top fixed guide frame are oppositely arranged.

8. The annealing furnace in-furnace multi-tiered magazine de-stacking apparatus of claim 1, wherein: The left and right sides of the furnace top lifting frame are provided with guide wheels, and the guide wheels on the left and right sides of the furnace top lifting frame are matched with the guide rails on the left and right sides of the furnace top fixed guide frame.

9. The annealing furnace in-furnace multi-tiered magazine de-stacking apparatus of claim 1, wherein: The lifting driving device is a lifting driving oil cylinder, the cylinder body of which is fixed to the top of the annealing furnace, and the piston rod of the lifting driving oil cylinder is upwardly connected with the furnace top lifting frame. The side pushing driving device is a side pushing driving oil cylinder, the cylinder body of which is rotatably arranged on the furnace top lifting frame, and the piston rod of the side pushing driving oil cylinder is rotatably connected with the upper end of the clamping arm rod. The piston rods of the two side pushing driving oil cylinders are oppositely arranged or arranged in the direction away from each other, and the piston rods of the two side pushing driving oil cylinders are synchronously extended or synchronously retracted.

10. The multi-tiered de-stacker apparatus within an annealing furnace of claim 2, wherein: Each clamping arm rod comprises two arm rod bodies, the upper portions of the two arm rod bodies are rotationally connected with the furnace top lifting frame, the top ends of the two arm rod bodies are fixedly connected by an upper connecting rod, a side pushing driving device is connected with the upper connecting rod, and the front and rear ends of the support plate are fixedly connected with the bottom ends of the two arm rod bodies respectively.

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