An extrusion molding device for manufacturing graphite electrodes

Abstract

The present invention discloses an extrusion molding device for manufacturing graphite electrodes, which belongs to the technical field of graphite electrode molding devices, including a table and a pressure plate arranged above the table, wherein a plurality of pressure heads are fixedly installed on the bottom surface of the pressure plate, and a plurality of molding holes cooperating with the pressure heads are opened on the top surface of the table, wherein a push block is slidably assembled inside the molding hole, and the bottom end of the push block is rotatably connected to a lifting rod, which passes downward through the table and is threadedly connected to the table; when the pressure head moves out of the molding hole, it drives the ring to rotate again, and when the push block just pushes the molded product to move above the table, the slider can move out of the slide groove, thereby preventing the lifting rod from continuing to move upward. Based on the above structure, even if the amount of raw materials in each molding hole is different, when the push block pushes the molded product to move just above the table, the slider can be disengaged from the slide groove, so that the push block remains stable, which is conducive to the push plate to push out each molded product.

Description

Technical Field

[0001] The present invention relates to the technical field of graphite electrode forming devices, in particular 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 and coal tar as binder. They are made through the process of raw material calcination, crushing and grinding, batching, mixing, molding, roasting, impregnation, graphitization and mechanical processing. They are an important high-temperature conductive material for electric furnace steelmaking.

[0003] Chinese patent CN222407344U discloses a graphite electrode extrusion molding device, in which a discharge hopper is fixed on one side of a support, a stopper is fixed on the top of the support, an electric push rod is fixed on the side of the stopper away from the discharge hopper, a push plate is fixed on the piston rod of the electric push rod, the stopper pushes the formed graphite electrode in the through groove to move upward, and the piston rod of the electric push rod drives the push plate to move, which is conducive to pushing the formed graphite electrode into a collection container, saving time and effort.

[0004] The above-mentioned device has multiple through slots on the support, and uses the cooperation of the pressing block and the stop block to extrude the raw material. This method is suitable for batch production of electrodes of the same size. When the heights of the electrodes to be produced are 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 molding 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 molding device for manufacturing graphite electrodes, so as to solve the problem that the existing device proposed in the above background technology has multiple through grooves on the support and uses the cooperation of the pressing block and the stop block to extrude the raw material. 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 inconvenient to operate through this device.

[0007] Based on the above ideas, the present invention provides the following technical solutions: an extrusion molding device for manufacturing graphite electrodes, comprising a table and a pressure plate arranged above the table, a plurality of pressure heads fixedly mounted on the bottom surface of the pressure plate, a plurality of forming holes cooperating with the pressure heads being provided on the top surface of the table, a push block being slidably assembled inside the forming hole, a lifting rod being rotatably connected to the bottom end of the push block, the lifting rod passing downward through the table and being threadedly connected to the table, a collar being sleeved on the outer side of the lifting rod, a slider being elastically connected to the inner wall of the collar, a sliding groove being slidably cooperating with the slider being provided on the outer peripheral wall of the lifting rod, an annular plate being rotatably sleeved on the outer side of the collar, and the annular plate and the collar being matched through an extrusion assembly;

[0008] The collar is provided with a traction assembly that cooperates with the slider, and a driven gear is installed at one end of the traction assembly that passes through the collar. A gear ring that meshes with the driven gear is provided at the lower position of the collar. When the collar rotates relative to the gear ring, the traction assembly can pull the slider so that the slider moves in a direction away from the lifting rod. When the slider moves out of the slide groove, the push block can move to the top position of the forming hole.

[0009] As a further solution of the present invention: a push plate is provided on one side of the top of the platform.

[0010] As a further solution of the present invention: the traction assembly includes a rotating shaft, a reel is provided on the outside of the rotating shaft through a one-way bearing rotation sleeve, a pull rope is fixed between the outer wall of the reel and the slider, and the driven gear can drive the rotating shaft to rotate synchronously.

[0011] As a further solution of the present invention: the extrusion assembly includes a pressure block arranged on the inner wall of the annular plate and elastically matched with the annular plate, and a groove matching with the pressure block is opened on the outer peripheral wall of the ring. The number of grooves is set to be multiple and distributed in an annular array on the outer peripheral wall of the ring, and the end of the pressure block located inside the groove is an arc surface.

[0012] As a further solution of the present invention: a support frame is provided below the lifting rod, and top rods are fixedly provided on both sides above the support frame. A connecting ring is provided on the outside of the lifting rod, and the gear ring is fixedly provided on the outside of the connecting ring. The top end of the top rod is fixedly connected to the connecting ring.

[0013] As a further solution of the present invention: a sprocket is provided on the outer fixed sleeve of the annular plate, and a chain is engaged on the outer side of the sprocket.

[0014] As a further solution of the present invention: a guard plate is provided on the outer side of the chain, and the chain is located on the guard plate and between the sprocket and the guard plate.

[0015] As a further solution of the present invention: a circular shaft is provided at the driven gear, the driven gear is fixedly sleeved on the outside of the circular shaft, and the bottom end of the rotating shaft is fixedly connected to the circular shaft.

[0016] As a further solution of the present invention: a groove for slidingly cooperating with the slider is provided on the inner wall of the collar, and a spring is fixedly provided between the inner end surface of the groove and the slider.

[0017] As a further solution of the present invention: a storage groove for accommodating the roll is provided at the inner end surface of the groove.

[0018] Compared with the prior art, the beneficial effect of the present invention is that: this device uses the traction component set up, so that in the process of the ring driving the lifting rod to move upward, the traction component can pull the slider to slide outward relative to the lifting rod, and when the push block pushes the raw material to be between the pressure head and the push block, the ring stops rotating, so that the slider can remain stable in the slide groove. Subsequently, when the pressure head moves out of the forming hole, it drives the ring to rotate again. When the push block just pushes the formed product to move above the table, the slider can move out of the slide groove, thereby preventing the lifting rod from continuing to move upward. Based on the above structure, even if the amount of raw materials in each forming hole is different, when the push block pushes the formed product just to move above the table, the slider can be disengaged from the slide groove, so that the push block remains stable, which is conducive to the push plate to push out each formed product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the push block, lifting rod and table structure of the present invention;

[0023] Figure 4 This invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0024] Figure 5 This is a schematic diagram of the cooperation between the ring gear and the driven gear of the present invention;

[0025] Figure 6 This is a schematic diagram of the collar of the present invention being sleeved on the outside of the lifting rod;

[0026] Figure 7 It is a schematic diagram of the connecting ring and gear ring structure of the present invention;

[0027] Figure 8 It is a schematic structural diagram of the traction assembly of the present invention;

[0028] Figure 9 It is a schematic diagram of the briquetting structure of the present invention;

[0029] Figure 10 This invention Figure 7 Schematic diagram of the enlarged structure at point B.

[0030] In the figure: 1. table; 101. forming hole; 2. push plate; 3. pressure plate; 301. pressure head; 4. motor; 5. lifting rod; 501. slide; 6. guard plate; 601. support rod; 7. fixed rod; 8. driven gear; 9. rotating shaft; 10. collar; 11. gear ring; 12. reel; 13. push block; 14. slider; 15. annular plate; 1501. pressure block; 16. ejector rod; 17. connecting ring; 18. sliding sleeve; 19. pull rope; 20. support frame; 21. chain. DETAILED DESCRIPTION

[0031] like Figures 1-10 As shown, an extrusion molding device for manufacturing graphite electrodes includes a table 1 and a pressure plate 3 arranged above the table 1. A plurality of pressure heads 301 are fixedly installed on the bottom surface of the pressure plate 3. The pressure heads 301 are columnar structures, and a plurality of forming holes 101 are provided on the top surface of the table 1 to match the pressure heads 301. The apertures of the plurality of forming holes 101 can be different. A push block 13 is slidably assembled at the bottom end of the forming hole 101. The push block 13 matches the aperture of the forming hole 101. In actual use, the raw material is introduced into the forming hole 101, and then the pressure plate 3 is driven to move downward. When the pressure head 301 enters the forming hole 101, the raw material can be extruded and molded. After the extrusion is completed, the push block 13 is driven to move upward to push the formed raw material upward.

[0032] In order to drive the push block 13 to move, this solution provides a lifting rod 5 at the bottom end of the push block 13. Specifically, the top end of the lifting rod 5 is rotatably connected to the push block 13, and the lifting rod 5 passes downward through the table 1 and is threadedly connected to the table 1. A ring 10 is sleeved on the outside of the lifting rod 5, and a slider 14 is elastically connected to the inner wall of the ring 10, and a sliding groove 501 that slides with the slider 14 is provided on the outer peripheral wall of the lifting rod 5. Through this structure, the ring 10 can drive the lifting rod 5 to rotate and the lifting rod 5 can slide relative to the ring 10. During specific use, when the slider 14 is moved out of the sliding groove 501, the push block 13 can move to the top position of the forming hole 101, so that the top surface of the push block 13 is aligned with the top surface of the table 1 or slightly higher than the top surface of the table 1.

[0033] In order to drive the ring 10 to rotate, the present invention provides an annular plate 15 on the outer side of the ring 10. The annular plate 15 and the ring 10 can be connected by a bearing. The annular plate 15 and the ring 10 are matched by an extrusion assembly. A sprocket is fixed on the outer side of the annular plate 15. Figure 2 、 Figure 6 As shown, the outer side of the sprocket is engaged with a chain 21, which can drive the ring 10 to rotate, and then drive the lifting rod 5 to move in the vertical direction. Figure 1As shown, a motor 4 is provided at the sprocket at the end of the chain 21 , and the output shaft of the motor 4 is drivingly connected to the sprocket at the end of the chain 21 , thereby driving the chain 21 to rotate.

[0034] The collar 10 is provided with a traction assembly that cooperates with the slider 14. The end of the traction assembly passing through the collar 10 is installed with a driven gear 8, and the outer side of the lifting rod 5 and the lower position of the collar 10 is provided with a gear ring 11 that meshes with the driven gear 8. When actually used, the raw material is put into the forming hole 101, and the pressing head 301 is driven by the pressing plate 3 to enter the forming hole 101 and remain stable. Figure 3 In the state shown, the chain 21 drives the sprocket to rotate, thereby driving 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 pressure head 301. After that, as the sprocket continues to rotate, the annular plate 15 can rotate relative to the collar 10. When the pressure 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.

[0035] A push plate 2 is provided on one side of the top of the table 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 convenient for taking it out.

[0036] like Figure 3-Figure 9 As shown, the traction assembly includes a rotating shaft 9, and a drum 12 is provided on the outside of the rotating shaft 9 through a one-way bearing sleeve. The one-way bearing is used to make the rotating shaft 9 only rotate in one direction relative to the drum 12. A pull rope 19 is fixed between the outer wall of the drum 12 and the slider 14, and the driven gear 8 can drive the rotating shaft 9 to rotate synchronously.

[0037] A support frame 20 is provided below the lifting rod 5, and push rods 16 are fixedly provided on both sides above the support frame 20. Specifically, a connecting ring 17 is sleeved on the outside of the lifting rod 5, and the gear ring 11 is fixedly sleeved on the outside of the connecting ring 17. The top end of the push rod 16 is inserted into the connecting ring 17 and fixedly connected to the connecting ring 17.

[0038] The extrusion assembly includes a pressure block 1501 arranged on the inner wall of the annular plate 15 and elastically matched with the annular plate 15. A notch that matches the pressure block 1501 is opened on the outer peripheral wall of the collar 10. The number of notches is set to be multiple and distributed in an annular array on the outer peripheral wall of the collar 10. Figure 4 、 Figure 9As shown, one end of the pressing block 1501 located inside the slot is an arc surface, and the arc surface is not completely inside the slot. Through this structure, when the pressure between the pressing block 1501 and the slot increases, the pressing block 1501 can be moved out of the slot.

[0039] The sprocket 15 is driven by the chain 21 to move, and the sprocket can drive the annular plate 15 to rotate, and then the ring 10 is driven to rotate by the extrusion assembly. The cooperation between the slider 14 and the slide groove 501 enables the ring 10 to drive the lifting rod 5 to rotate. Due to the threaded cooperation between the lifting rod 5 and the table 1, the lifting rod 5 can drive the push block 13 to move upward during the rotation, thereby squeezing the raw material in the forming hole 101 between the ram 301 and the push block 13. In this process, the driven gear 8 at the bottom of the ring 10 can mesh with the ring gear 11, and the ring gear 11 can drive the driven gear 8 to rotate, thereby driving the rotating shaft 9 and the reel 12 to rotate. As the reel 12 gradually reels the pull rope 19, the slider 14 will gradually slide in the direction away from the lifting rod 5.

[0040] When the raw material in the forming hole 101 is pushed between the pressure head 301 and the push block 13, as the chain 21 continues to drive the sprocket to rotate, the pressure between the pressure block 1501 and the notch can be increased, so that the annular plate 15 can rotate relative to the collar 10, while the collar 10 is in a stationary state, so that the driven gear 8 and the ring gear 11 can remain stable, and the pull rope 19 can be prevented from being entangled. When the amount of raw material in each forming hole 101 is different, the distance that the push block 13 inside each forming hole 101 moves upward is also different, so that the distance that the slider 14 moves outward relative to the lifting rod 5 is also different. When the push block 13 in each forming hole 101 moves into place, the chain 21 stops rotating, and the pressure head 301 is driven downward by the pressure plate 3 to squeeze the raw material in the forming hole 101;

[0041] When the pressure head 301 moves upward, it drives the chain 21 to rotate again, and the chain 21 can drive the annular plate 15 to rotate. When the pressing block 1501 is aligned with the notch, the pressing block 1501 can pop out and insert into the notch, so that the annular plate 15 can drive the collar 10 to rotate again, so that the lifting rod 5 can continue to move upward. When the slider 14 is completely removed from the slide groove 501, the push block 13 can move to the top position of the forming hole 101, and then push the formed product to the top of the table 1, which is conducive to pushing the formed product for unloading through the push plate 2;

[0042] Afterwards, the annular plate 15 can be driven to rotate in the opposite direction by driving the chain 21. During this process, the engagement of the driven gear 8 and the ring gear 11 can drive the rotating shaft 9 to rotate in the opposite direction, and the pulling force of the pull rope 19 on the reel 12 can cause the reel 12 to rotate in the opposite direction following the rotating shaft 9, so that the pull rope 19 can be loosened from the reel 12. When the slider 14 is fully inserted into the slide groove 501, the pull rope 19 loses the pulling force on the reel 12. At this time, the reel 12 will not be driven to rotate during the reverse rotation of the rotating shaft 9. Through this structure, after the lifting rod 5 and the push block 13 are reset, the pull rope 19 between the slider 14 and the reel 12 can be in a nearly straight state, which is convenient for the next use.

[0043] When the pressing head 301 is moved out of the forming hole 101, the sleeve 10 is driven to rotate again, and when the pushing block 13 just pushes the formed product to move above the table 1, the slide block 14 can move out of the slide groove 501, thereby preventing the lifting rod 5 from continuing to move upward. Based on the above structure, even if the amount of material in each forming hole 101 is different, when the pushing block 13 pushes the formed product to move just above the table 1, the slide block 14 can be disengaged from the slide groove 501, so that the pushing block 13 remains stable, which is conducive to the pushing plate 2 to push out each formed product.

[0044] like Figures 1-10 As shown, a hydraulic rod is provided above the pressure plate 3, and the telescopic end of the hydraulic rod is fixedly connected to the pressure plate 3. In actual use, the hydraulic rod is fixed to the external frame. Furthermore, sliding sleeves 18 are fixedly provided on both side surfaces of the table 1, and a guide rod is fixedly provided on the bottom surface of the pressure plate 3. The guide rod passes through the sliding sleeve 18 and slides with it to improve the stability of the movement of the pressure plate 3. A telescopic unit is provided on one side of the push plate 2. The telescopic unit can be a cylinder or a hydraulic cylinder. The output end of the telescopic unit is fixedly connected to the push plate 2, and the telescopic unit can be fixedly installed on the table 1 or the external wall.

[0045] A guard plate 6 is provided on the outer side of the chain 21, so that the chain 21 can be placed on the guard plate 6 and is located between the sprocket and the guard plate 6. This structure is conducive to 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 provided between the support frame 20 and the support rod 601.

[0046] A rectangular groove is provided on the inner wall of the annular plate 15 to be slidably engaged with the pressing block 1501 , and a first spring is fixedly provided between the inner end surface of the rectangular groove and the pressing block 1501 .

[0047] A groove that slides with the slider 14 is provided on the inner wall of the collar 10, and a spring is fixedly arranged between the inner end surface of the groove and the slider 14. A storage groove for accommodating the reel 12 is provided at the inner end surface of the groove, and the storage groove is connected to 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 and the collar 10 can rotate together. Furthermore, a circular shaft is provided at the driven gear 8, so that the driven gear 8 is fixedly sleeved on the outside of the circular shaft, and the bottom end of the rotating shaft 9 is fixedly connected to the circular shaft.

Claims

1. An extrusion molding device for manufacturing graphite electrodes, comprising a platen and a pressure plate disposed above the platen, wherein a plurality of pressing heads are fixedly mounted on the bottom surface of the pressure plate, and a plurality of forming holes are formed on the top surface of the platen to cooperate with the pressing heads, wherein push blocks are slidably mounted inside the forming holes, characterized in that: The bottom end of the push block is rotatably connected to a lifting rod, which passes downward through the table and is threadedly connected to the table. A collar is sleeved on the outer side of the lifting rod, and a slider is elastically connected to the inner wall of the collar. A sliding groove that slides with the slider is provided on 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. The collar is provided with a traction assembly that cooperates with the slider, and a driven gear is installed on the end of the traction assembly that passes through the collar. A gear ring that meshes with the driven gear is provided at the lower position of the collar. When the collar rotates relative to the gear ring, the traction assembly can pull the slider so that the slider moves in a direction away from the lifting rod. When the slider moves out of the slide groove, the push block can move to the top position of the forming hole; The traction assembly includes a rotating shaft, a reel is rotatably sleeved on the outer side of the rotating shaft through a one-way bearing, a pull rope is fixedly arranged between the outer wall of the reel and the slider, and the driven gear can drive the rotating shaft to rotate synchronously; The extrusion assembly includes a pressure block arranged on the inner wall of the annular plate and elastically matched with the annular plate. A slot matching the pressure block is opened on the outer peripheral wall of the collar. The number of slots is set to multiple and distributed in an annular array on the outer peripheral wall of the collar. The end of the pressure block located inside the slot is an arc surface.

2. The extrusion molding device for manufacturing a graphite electrode according to claim 1, characterized in that: A push plate is provided on one side of the top of the platform.

3. The extrusion molding device for manufacturing a graphite electrode according to claim 1, characterized in that: A support frame is provided below the lifting rod, and push rods are fixedly provided on both sides above the support frame. A connecting ring is sleeved on the outside of the lifting rod, and the gear ring is fixedly sleeved on the outside of the connecting ring. The top of the push rod is fixedly connected to the connecting ring.

4. The extrusion molding device for manufacturing a graphite electrode according to claim 1, characterized in that: A sprocket is provided on the outer fixed sleeve of the annular plate, and a chain is engaged on the outer side of the sprocket.

5. The extrusion molding device for manufacturing a graphite electrode according to claim 4, characterized in that: A guard plate is provided on the outer side of the chain, and the chain is located on the guard plate and between the sprocket and the guard plate.

6. The extrusion molding device for manufacturing a graphite electrode according to claim 1, characterized in that: The driven gear is provided with a circular shaft, the driven gear is fixedly sleeved on the outside of the circular shaft, and the bottom end of the rotating shaft is fixedly connected to the circular shaft.

7. The extrusion molding device for manufacturing a graphite electrode according to claim 1, characterized in that: A groove which is slidably matched with the slider is provided on the inner wall of the collar, and a spring is fixedly arranged between the inner end surface of the groove and the slider.

8. The extrusion molding device for manufacturing a graphite electrode according to claim 7, characterized in that: A storage groove for accommodating the roll is provided at the inner end surface of the groove.

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