Extrusion forming device for graphite electrode manufacturing

Abstract

The invention discloses an extrusion forming device for graphite electrode manufacturing, and belongs to the technical field of graphite electrode forming devices.The extrusion forming device comprises a platen and a pressing plate arranged above the platen, a plurality of pressing heads are fixedly installed on the bottom face of the pressing plate, a plurality of forming holes matched with the pressing heads are formed in the top face of the platen, and push blocks are slidably assembled in the forming holes; the bottom end of the push block is rotationally connected with a lifting rod, and the lifting rod downwards penetrates through the table plate and is in threaded connection with the table plate; after the pressing head moves out of the forming holes, the lantern ring is driven to rotate again, and when the pushing block just pushes the formed product to move to the position above the platen, the sliding block can move out of the sliding groove, and then the lifting rod is prevented from continuing to move upwards. When the push block pushes the formed products to just move to the position above the platen, the sliding block can be separated from the sliding groove, so that the push block is kept stable, and the push plate can push out all the formed products conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of graphite electrode forming devices, and particularly relates to an extrusion forming device for manufacturing graphite electrodes. Background Art

[0002] Graphite electrodes are made from petroleum coke and needle coke as raw materials, coal tar pitch as a binder, through processes such as raw material calcination, crushing and grinding, batching, kneading, forming, roasting, impregnation, graphitization, and machining. They are important high-temperature conductive materials for electric arc furnaces.

[0003] Chinese Patent CN222407344U discloses an extrusion forming device for graphite electrodes. A discharge hopper is fixed on one side of a support, a stop seat is fixed at the top of the support, an electric push rod is fixed on the side of the stop seat away from the discharge hopper, a push plate is fixed on the piston rod of the electric push rod, and the stop block pushes the formed graphite electrode in the through groove upward. The piston rod of the electric push rod drives the push plate to move, which is beneficial for pushing the formed graphite electrode into the collection container, saving time and effort.

[0004] The above device opens multiple through grooves on the support and uses the cooperation of a pressing block and a stop block to extrude raw materials. This method is suitable for batch production of electrodes of the same size. When the height of the electrodes to be produced is different, it is more inconvenient to operate through this device. In summary, this device still has room for improvement.

[0005] Therefore, it is necessary to provide an extrusion forming device for manufacturing graphite electrodes to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide an extrusion forming device for manufacturing graphite electrodes to solve the problem in the above background art that the existing device opens multiple through grooves on the support and uses the cooperation of a pressing block and a stop block to extrude raw materials. This method is suitable for batch production of electrodes of the same size. When the height of the electrodes to be produced is different, it is more inconvenient to operate through this device.

[0007] Based on the above idea, the present invention provides the following technical solution: An extrusion forming device for manufacturing graphite electrodes includes a table board and a pressing plate arranged above the table board. A plurality of pressing heads are fixedly installed on the bottom surface of the pressing plate. A plurality of forming holes matching the pressing heads are opened on the top surface of the table board. A pushing block is slidably assembled inside the forming hole. The bottom end of the pushing block is rotatably connected to a lifting rod. The lifting rod passes downward through the table board and is threadedly connected to the table board. A collar is sleeved outside the lifting rod. A slider is elastically connected to the inner wall of the collar. A sliding groove for sliding cooperation with the slider is opened on the outer peripheral wall of the lifting rod. An annular plate is rotatably sleeved outside the collar, and the annular plate and the collar are cooperated through an extrusion assembly; A traction component that cooperates with the slider is arranged at the collar. One end of the traction component passing through the collar is equipped with a driven gear. A toothed ring that meshes with the driven gear is arranged at the position below the collar. When the collar rotates relative to the toothed ring, the traction component can pull the slider so that the slider moves in a direction away from the lifting rod. When the slider moves out of the chute, the push block can move to the top position of the forming hole.

[0008] As a further scheme of the present invention: A push plate is arranged on one side of the top of the table board.

[0009] As a further scheme of the present invention: The traction component includes a rotating shaft. A winding drum is rotatably sleeved on the outer side of the rotating shaft through a one-way bearing. A pulling rope is fixedly arranged between the outer side wall of the winding drum and the slider. The driven gear can drive the rotating shaft to rotate synchronously.

[0010] As a further scheme of the present invention: The extrusion component includes a pressing block arranged on the inner wall of the annular plate and elastically cooperating with the annular plate. A notch that cooperates with the pressing block is opened on the outer peripheral wall of the collar. The number of notches is set to be multiple and is distributed in an annular array on the outer peripheral wall of the collar. One end of the pressing block located inside the notch is an arc surface.

[0011] As a further scheme of the present invention: A support frame is arranged below the lifting rod. Two sides above the support frame are fixedly provided with top rods. A connecting ring is sleeved on the outer side of the lifting rod. The toothed ring is fixedly sleeved on the outer side of the connecting ring. The top ends of the top rods are fixedly connected to the connecting ring.

[0012] As a further scheme of the present invention: A sprocket is fixedly sleeved on the outer side of the annular plate. A chain meshes with the sprocket on the outer side.

[0013] As a further scheme of the present invention: A guard plate is arranged on the outer side of the chain. The chain is located on the guard plate and is between the sprocket and the guard plate.

[0014] As a further scheme of the present invention: A round shaft is arranged at the driven gear. The driven gear is fixedly sleeved on the outer side of the round shaft. The bottom end of the rotating shaft is fixedly connected to the round shaft.

[0015] As a further scheme of the present invention: A groove that slidably cooperates with the slider is opened on the inner wall of the collar. A spring is fixedly arranged between the inner end face of the groove and the slider.

[0016] As a further scheme of the present invention: A storage groove for accommodating the winding drum is opened on the inner end face of the groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the traction assembly provided in this device, when the collar drives the lifting rod to move upward, the traction assembly can pull the slider to slide outward relative to the lifting rod. After the push block pushes the raw material between the pressing head and the push block, the collar stops rotating, enabling the slider to remain stable within the chute. Subsequently, when the pressing head moves out of the forming hole, the collar is driven to rotate again. When the push block just pushes the formed product to move above the table board, the slider can move out of the chute, thereby preventing the lifting rod from continuing to move upward. Based on the above structure, even if the amount of raw material in each forming hole is different, when the push block just pushes the formed product to move exactly above the table board, the slider can disengage from the chute, keeping the push block stable, which is beneficial for the push board to push out each formed product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the drawings and embodiments: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a three-dimensional structure diagram of the present invention; Figure 3 is a schematic diagram of the structure of the push block, lifting rod and table board of the present invention; Figure 4 is the present invention Figure 3 magnified structure diagram at A; Figure 5 is a schematic diagram of the cooperation between the toothed ring and the driven gear of the present invention; Figure 6 is a schematic diagram of the collar sleeved outside the lifting rod of the present invention; Figure 7 is a schematic diagram of the structure of the connecting ring and the toothed ring of the present invention; Figure 8 is a schematic diagram of the structure of the traction assembly of the present invention; Figure 9 is a schematic diagram of the structure of the pressing block of the present invention; Figure 10 is the present invention Figure 7 magnified structure diagram at B.

[0019] In the figure: 1, table board; 101, forming hole; 2, push board; 3, pressing plate; 301, pressing head; 4, motor; 5, lifting rod; 501, chute; 6, guard plate; 601, support rod; 7, fixed rod; 8, driven gear; 9, rotating shaft; 10, collar; 11, toothed ring; 12, reel; 13, push block; 14, slider; 15, annular plate; 1501, pressing block; 16, ejector rod; 17, connecting ring; 18, sliding sleeve; 19, pulling rope; 20, support frame; 21, chain. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] As shown Figures 1-10 in the figure, an extrusion molding device for manufacturing graphite electrodes includes a table board 1 and a pressing plate 3 arranged above the table board 1. A plurality of pressing heads 301 are fixedly installed on the bottom surface of the pressing plate 3. The pressing heads 301 are columnar structures, and a plurality of molding holes 101 matching the pressing heads 301 are formed on the top surface of the table board 1. The apertures of the plurality of molding holes 101 can be different. A pushing block 13 is slidably assembled at the inner bottom end of the molding hole 101. The pushing block 13 matches the aperture of the molding hole 101. During actual use, raw materials are introduced into the molding hole 101, and then the pressing plate 3 is driven to move downward. When the pressing head 301 enters the molding hole 101, the raw materials can be extruded and molded. After the extrusion is completed, driving the pushing block 13 to move upward can push the molded raw materials upward

[0021] To drive the pushing block 13 to move, a lifting rod 5 is arranged at the bottom end of the pushing block 13 in this solution. Specifically, the top end of the lifting rod 5 is rotatably connected to the pushing block 13, and the lifting rod 5 passes through the table board 1 downward and is threadedly connected to the table board 1. A collar 10 is sleeved outside the lifting rod 5. An elastic connection is provided between the inner wall of the collar 10 and a slider 14, and a sliding groove 501 slidably matched with the slider 14 is formed on the outer peripheral wall of the lifting rod 5. Through this structure, the collar 10 can drive the lifting rod 5 to rotate and the lifting rod 5 can slide relative to the collar 10. During specific use, when the slider 14 moves out of the sliding groove 501, the pushing block 13 can move to the top position of the molding hole 101, so that the top surface of the pushing block 13 is aligned with the top surface of the table board 1 or slightly higher than the top surface of the table board 1

[0022] To drive the collar 10 to rotate, an annular plate 15 is rotatably sleeved outside the collar 10 in this solution. The annular plate 15 and the collar 10 can be rotatably connected through a bearing, and the annular plate 15 and the collar 10 are matched through an extrusion component. A sprocket is fixedly sleeved outside the annular plate 15. Combined Figure 2 with Figure 6 as shown in the figure, a chain 21 is engaged with the outside of the sprocket. In this way, the collar 10 can be driven to rotate, and then the lifting rod 5 can be driven to move in the vertical direction. Combined Figure 1 as shown in the figure, a motor 4 is arranged at the sprocket at the end of the chain 21. The output shaft of the motor 4 is in transmission connection with the sprocket at the end of the chain 21 to drive the chain 21 to rotate

[0023] A traction component matched with the slider 14 is arranged at the collar 10. One end of the traction component passing through the collar 10 is installed with a driven gear 8, and a tooth ring 11 meshed with the driven gear 8 is arranged outside the lifting rod 5 and at a position below the collar 10. During actual use, raw materials are put into the molding hole 101, and the pressing head 301 is driven by the pressing plate 3 to enter the molding hole 101 and remain stable. Specifically as Figure 3The state shown in the figure. At this time, the chain 21 drives the sprocket to rotate, and then drives the collar 10 to rotate, so that the lifting rod 5 can move upward. During this process, the push block 13 moves upward until the raw material is squeezed between the push block 13 and the pressing head 301. After that, as the sprocket continues to rotate, the annular plate 15 can rotate relative to the collar 10. When the pressing head 301 is withdrawn from the forming hole 101, the chain 21 drives the sprocket to rotate again, so that the lifting rod 5 can drive the push block 13 to move upward to push the formed product out of the forming hole 101; A push plate 2 is provided on one side of the top of the platen 1. According to the above description, when the push block 13 just pushes the formed product out of the forming hole 101, the push plate 2 can push the formed product out from under the pressing plate 3, which is beneficial for taking it.

[0024] As Figures 3-9 shown, the traction assembly includes a rotating shaft 9. A winding drum 12 is sleeved on the outer side of the rotating shaft 9 through a one-way bearing. The one-way bearing enables the rotating shaft 9 to rotate only in one direction relative to the winding drum 12. A pull rope 19 is fixedly arranged between the outer side wall of the winding drum 12 and the slider 14. The driven gear 8 can drive the rotating shaft 9 to rotate synchronously.

[0025] A support frame 20 is arranged below the lifting rod 5. Two sides above the support frame 20 are fixedly provided with ejector rods 16. Specifically, a connecting ring 17 is sleeved outside the lifting rod 5, and the toothed ring 11 is fixedly sleeved outside the connecting ring 17. The top ends of the ejector rods 16 are inserted into the connecting ring 17 and fixedly connected to the connecting ring 17.

[0026] The extrusion assembly includes a pressing block 1501 arranged on the inner wall of the annular plate 15 and elastically matched with the annular plate 15. A notch matched with the pressing block 1501 is formed on the outer peripheral wall of the collar 10. The number of notches is set to be multiple and is distributed in an annular array on the outer peripheral wall of the collar 10. Referring to Figure 4 、 Figure 9 shown, one end of the pressing block 1501 located inside the notch is an arc surface, and the arc surface is not completely in the notch. With this structure, when the pressure between the pressing block 1501 and the notch increases, the pressing block 1501 can move out of the notch.

[0027] In actual use, the raw materials are introduced into the forming holes 101, and the amount of raw materials in each forming hole 101 can be different. Then, the pressing plate 3 drives the pressing head 301 to move downward. When the pressing head 301 enters the inside of the forming hole 101, it stops moving. The chain 21 drives the sprocket to move, and the sprocket can drive the annular plate 15 to rotate. Then, through the extrusion assembly, the collar 10 is driven to rotate. Through the cooperation of the slider 14 and the chute 501, the collar 10 can drive the lifting rod 5 to rotate. Also, due to the threaded fit between the lifting rod 5 and the table board 1, when the lifting rod 5 rotates, it can drive the push block 13 to move upward, thereby extruding the raw materials in the forming hole 101 between the pressing head 301 and the push block 13. During this process, the driven gear 8 at the bottom of the collar 10 can mesh with the gear ring 11, and the gear ring 11 can drive the driven gear 8 to rotate, thereby driving the rotating shaft 9 and the winding drum 12 to rotate. As the winding drum 12 gradually winds up the pulling rope 19, the slider 14 will gradually slide away from the lifting rod 5. When the raw materials in the forming hole 101 are pushed between the pressing head 301 and the push block 13, as the chain 21 continues to drive the sprocket to rotate, the pressure between the pressing block 1501 and the notch can increase, so that the annular plate 15 can rotate relative to the collar 10, while the collar 10 remains stationary, enabling the driven gear 8 and the gear ring 11 to remain stable and preventing the continuous winding of the pulling rope 19. When the amount of raw materials in each forming hole 101 is different, the upward moving distances of the push blocks 13 inside each forming hole 101 are also different, making the outward moving distances of the sliders 14 relative to the lifting rod 5 different. When the push blocks 13 in each forming hole 101 move in place, stop the rotation of the chain 21, and drive the pressing head 301 to move downward by the pressing plate 3 to extrude the raw materials in the forming hole 101. After the pressing head 301 moves upward, drive the chain 21 to rotate again. Through the chain 21, the annular plate 15 can be driven to rotate. When the pressing block 1501 aligns with the notch, the pressing block 1501 can pop out and insert into the notch, enabling the annular plate 15 to drive the collar 10 to rotate again, so that the lifting rod 5 can continue to move upward. When the slider 14 completely moves out of the chute 501, the push block 13 can move to the top position of the forming hole 101, thereby pushing the formed product above the table board 1. The push plate 2 is beneficial for pushing the formed product for blanking. After that, driving the chain 21 to rotate in the reverse direction can drive the annular plate 15 to rotate in the reverse direction. During this process, the driven gear 8 meshing with the gear ring 11 can drive the rotating shaft 9 to rotate in the reverse direction, and the pulling force of the pulling rope 19 on the winding drum 12 can cause the winding drum 12 to rotate in the reverse direction following the rotating shaft 9, so that the pulling rope 19 can be loosened from the winding drum 12. When the slider 14 is completely inserted into the inside of the sliding groove 501, the pulling rope 19 loses the pulling force on the winding drum 12. At this time, the rotating shaft 9 will not drive the winding drum 12 to rotate during the reverse rotation process. Through this structure, after the lifting rod 5 and the pushing block 13 are reset, the pulling rope 19 between the slider 14 and the winding drum 12 can be in a nearly straight state, which is beneficial for the next use.

[0028] In summary, through the provided traction assembly in this device, during the process of the collar 10 driving the lifting rod 5 to move upward, the traction assembly can pull the slider 14 to slide outward relative to the lifting rod 5. When the pushing block 13 pushes the raw material between the pressing head 301 and the pushing block 13, the collar 10 stops rotating, so that the slider 14 can be stable in the sliding groove 501. Subsequently, when the pressing head 301 moves out of the forming hole 101, the collar 10 is driven to rotate again. When the pushing block 13 just pushes the formed product to move above the table board 1, the slider 14 can move out of the sliding groove 501, thereby preventing the lifting rod 5 from continuing to move upward. Based on the above structure, even if the amount of raw material in each forming hole 101 is different, when the pushing block 13 just pushes the formed product to move right above the table board 1, the slider 14 can disengage from the sliding groove 501, making the pushing block 13 stable, which is beneficial for the push board 2 to push out each formed product.

[0029] As Figures 1-10 shown, a hydraulic rod is provided above the pressing plate 3, and the telescopic end of the hydraulic rod is fixedly connected to the pressing plate 3. During actual use, the hydraulic rod is fixed to the external frame. Further, sliding sleeves 18 are fixedly arranged on both side surfaces of the table board 1, and guide rods are fixedly arranged on the bottom surface of the pressing plate 3. The guide rods pass through the sliding sleeves 18 and are slidably matched with them to improve the stability of the movement of the pressing plate 3. A telescopic unit is arranged on one side of the push board 2. The telescopic unit can be a cylinder or a hydraulic cylinder, and the output end of the telescopic unit is fixedly connected to the push board 2. The telescopic unit can be fixedly installed on the table board 1 or the external wall.

[0030] A guard plate 6 is arranged on the outer side of the chain 21, so that the chain 21 can be placed on the guard plate 6 and is between the sprocket and the guard plate 6. Through this structure, it is beneficial for the stable operation of the chain 21. A plurality of support rods 601 are fixedly installed on the bottom surface of the guard plate 6, and a fixing rod 7 is fixedly arranged between the support frame 20 and the support rods 601.

[0031] A rectangular groove that is slidably mated with the pressing block 1501 is formed in the inner wall of the annular plate 15, and a first spring is fixedly arranged between the inner end face of the rectangular groove and the pressing block 1501.

[0032] A groove that is slidably mated with the slider 14 is formed in the inner wall of the collar 10, and a spring is fixedly arranged between the inner end face of the groove and the slider 14. A storage groove for accommodating the reel 12 is formed in the inner end face of the groove. The storage groove communicates with the groove. The top end of the rotating shaft 9 passes through the collar 10 and extends into the storage groove, so that the rotating shaft 9 is rotatably mated with the collar 10. Further, a round shaft is provided at the driven gear 8, so that the driven gear 8 is fixedly sleeved outside the round shaft, and the bottom end of the rotating shaft 9 is fixedly connected to the round shaft.

Claims

1. An extrusion molding device for manufacturing graphite electrodes, comprising a table board and a pressing plate arranged above the table board. A plurality of pressing heads are fixedly installed on the bottom surface of the pressing plate, and a plurality of molding holes matching the pressing heads are formed on the top surface of the table board. A pushing block is slidably assembled inside the molding hole, and it is characterized in that: The bottom end of the pushing block is rotatably connected to a lifting rod, the lifting rod passes through the table board downward and is threadedly connected to the table board. A collar is sleeved on the outer side of the lifting rod, a slider is elastically connected to the inner wall of the collar, a sliding groove which is slidably matched with the slider is formed in the outer peripheral wall of the lifting rod, an annular plate is rotatably sleeved on the outer side of the collar, and the annular plate and the collar are matched through an extrusion assembly; A traction assembly which is matched with the slider is arranged on the collar, a driven gear is installed at one end of the traction assembly passing through the collar, a gear ring which is meshed with the driven gear is arranged at a position below the collar. When the collar rotates relative to the gear ring, the traction assembly can pull the slider to move the slider in a direction away from the lifting rod. After the slider moves out of the sliding groove, the pushing block can move to the top position of the forming hole.

2. The extrusion molding device for manufacturing graphite electrodes according to claim 1, characterized in that: A pushing plate is arranged on one side of the top of the table board.

3. An extrusion molding device for manufacturing graphite electrodes according to claim 1, characterized in that: The traction assembly includes a rotating shaft, a winding drum is rotatably sleeved on the outer side of the rotating shaft through a one-way bearing, a pulling rope is fixedly arranged between the outer side wall of the winding drum and the slider, and the driven gear can drive the rotating shaft to rotate synchronously.

4. An extrusion forming device for manufacturing graphite electrodes according to claim 3, characterized in that: The extrusion assembly includes a pressing block arranged on the inner wall of the annular plate and elastically matched with the annular plate. A notch which is matched with the pressing block is formed in the outer peripheral wall of the collar. The number of the notches is multiple and the notches are distributed in an annular array on the outer peripheral wall of the collar. One end of the pressing block located inside the notch is an arc surface.

5. The extrusion molding device for manufacturing graphite electrodes according to claim 1, characterized in that: A support frame is arranged below the lifting rod, top rods are fixedly arranged on both sides above the support frame, a connecting ring is sleeved on the outer side of the lifting rod, the gear ring is fixedly sleeved on the outer side of the connecting ring, and the top end of the top rod is fixedly connected with the connecting ring.

6. The extrusion forming device for manufacturing graphite electrodes according to claim 1, characterized in that: A sprocket is fixedly sleeved on the outer side of the annular plate, and a chain is meshed with the sprocket.

7. An extrusion molding device for manufacturing graphite electrodes according to claim 6, characterized in that: A guard plate is arranged on the outer side of the chain, and the chain is located on the guard plate and between the sprocket and the guard plate.

8. An extrusion molding device for manufacturing graphite electrodes according to claim 3, characterized in that: A round shaft is arranged at the driven gear, the driven gear is fixedly sleeved on the outer side of the round shaft, and the bottom end of the rotating shaft is fixedly connected with the round shaft.

9. An extrusion molding device for manufacturing graphite electrodes according to claim 3, characterized in that: A groove which is slidably matched with the slider is formed in the inner wall of the collar, and a spring is fixedly arranged between the inner end face of the groove and the slider.

10. An extrusion molding device for manufacturing graphite electrodes according to claim 9, characterized in that: A storage groove for accommodating the winding drum is formed in the inner end face of the groove.

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