A rotary forming machine for coke.
By introducing an automatic cleaning system into the rotary forming machine for coke, and using a sponge sleeve and self-adhesive strip to clean the mold cavity, the problem of sticky substances adhering after coke forming is solved, achieving automated cleaning and improved production efficiency.
Patent Information
- Application Number
- CN202522358474.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-06
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-11-06
AI Technical Summary
After the coke is formed, sticky substances tend to adhere to the forming cavity, requiring manual cleaning and increasing the workload of operators.
Design a rotary forming machine for coke, which adopts a lifting fan-shaped plate and a rotating cleaning component driven by a first cylinder. The mold cavity is automatically cleaned by a sponge sleeve and a self-adhesive strip. The cleaning component scrapes off and adheres residual material through the sponge sleeve.
It enables automatic, real-time cleaning of the rotary forming mold cavity, reducing manual cleaning workload, protecting the integrity of the forming cavity, and improving production efficiency and product quality stability.
Smart Images

Figure CN224940664U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of coke production technology and relates to a rotary forming machine for coke production. Background Technology
[0002] Molded coke technology is a technique that processes powdered coal (such as non-caking coal, weakly caking coal, coke powder, coal slime, etc.) or biomass powder, which cannot be directly used in industrial kilns such as blast furnaces and cupola furnaces, into block fuels with specific shapes, sizes, and mechanical strength through proportioning, mixing, molding, and subsequent carbonization (or non-carbonization). This technology transforms large quantities of low-quality powdered fuel into valuable resources, improves the utilization rate of coal resources, reduces dust pollution generated during the storage, transportation, and use of pulverized coal, and produces clean fuels with regular shapes, high strength, and suitable reactivity, meeting the specific needs of industries such as metallurgy, chemical engineering, and machinery casting.
[0003] Under external force, loose powdery materials are transformed into dense geometric shapes (balls, blocks, or briquettes). In coke production, a rotary forming machine is used. The core component of this machine is a power-driven, horizontally or tilted rotating disc (rotor). A ring of forming cavities is evenly distributed around the disc's perimeter. A feeding system and material distributor are located above the disc, while a demolding mechanism and ball discharge chute are located below. The inner side houses the main pressure roller and the auxiliary pressure roller (pre-pressure roller).
[0004] During operation, powder is evenly distributed onto the turntable via a feeding system. As the turntable rotates, a scraper scrapes the material into the mold cavity and levels it (pre-compression). When the mold cavity, filled with material, rotates to the level of the main pressure roller, the main pressure roller applies stable rolling pressure to the material in the mold cavity, compacting it into shape. The formed spherical shape continues to rotate with the turntable to the demolding area, where a demolding device (such as a scraper or roller) pushes the spherical shape out of the mold cavity and into a chute for collection. However, after molding and demolding, some sticky substances tend to adhere to the molding cavity. To avoid the reuse of the molding cavity due to residual substances, manual cleaning of the material in the molding cavity is required, increasing the workload of the operators. Therefore, it is particularly necessary to design a turntable molding machine for spherical shapes to solve the above problems. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this utility model provides a rotary forming machine for coke.
[0006] To achieve the above objectives, the technical solution of this utility model is: a rotary forming machine for coke, comprising a base, a rotating disk rotatably connected to the top surface of the base, a plurality of forming holes being opened on the top surface of the rotating disk, a top plate being slidably connected within the forming holes, a support column being rotatably sleeved at the center of the rotating disk, the support column being fixed to the top surface of the base, a pressing component being fixedly connected to the top surface of the support column, a groove being provided on one side of the base, a fan-shaped plate being lifted and lowered above the rotating disk, a cleaning component being rotatably connected to the bottom surface of the fan-shaped plate, and a feeding component being fixedly connected to the top surface of the base.
[0007] The feeding component includes a frame fixedly connected to the top surface of the base, a feeding hopper fixedly connected to the end of the frame, a feeding pipe fixedly connected to the top surface of the feeding hopper, and a distributing pipe fixedly connected to the bottom surface of the feeding hopper.
[0008] The cleaning component includes a first cylinder fixedly connected to the outside of the base. A fixing block is fixedly connected to the end of the piston rod of the first cylinder. The fixing block is fixedly connected to the sector plate. A rotating shaft is rotatably passed through the bottom surface of the sector plate. A sponge sleeve is fitted on the outer edge of the rotating shaft. Multiple self-adhesive strips are fixedly connected to the outside of the sponge sleeve. A driven gear is fixedly connected to the top surface of the rotating shaft. Multiple driven gears on the same radial line mesh with each other. The outer edge of one of the driven gears meshes with a first driving gear. A first drive shaft is fixedly connected to the bottom surface of the first driving gear. A second drive motor is drivenly connected to the end of the first drive shaft. The second drive motor is fixed to the top surface of the sector plate.
[0009] A support ring is fixedly sleeved on the outer edge of the rotating shaft, a fixing ring is fixedly connected to the top surface of the sponge sleeve, multiple countersunk holes are opened on the bottom surface of the fixing ring, bolts are sleeved in the countersunk holes, and a threaded groove is opened on the bottom surface of the support ring, and the bolts are threadedly connected in the threaded groove.
[0010] The bottom surface of the rotating disk is fixedly connected to a first sleeve, which is rotatably connected to the top surface of the base. An annular toothed groove is formed on the inner wall of the first sleeve. A third drive motor is fixedly connected to the top surface of the base. The output end of the third drive motor is drivenly connected to a second drive shaft. A second drive gear is fixedly connected to the top surface of the second drive shaft. The second drive gear meshes with the annular toothed groove. A sealing ring is fixedly fitted on the outer edge of the support column. A second retaining ring is fixedly fitted on the outer edge of the sealing ring. The second retaining ring is rotatably connected to the top surface of the rotating disk. A first retaining ring is fixedly connected to the outer edge of the top surface of the rotating disk. A discharge port is formed on the outside of the first retaining ring. Two fixing strips are symmetrically fixed to the top surface of the support column. A scraper is fixedly connected to the outer edge of the second retaining ring. The scraper is attached to the top surface of the rotating disk.
[0011] The pressing component includes a column fixedly connected to the top surface of the support column. A guide groove is formed on the side of the column, and a guide block is slidably connected in the guide groove. A screw is threaded through the top surface of the guide block. One end of the screw is rotatably connected to the bottom wall of the guide groove, and the other end rotatably passes through the top wall of the guide groove. A first drive motor is fixedly connected to the top surface of the column, and the output end of the first drive motor is connected to the end of the screw. A support beam is fixedly connected to the side of the guide block, and multiple pressing columns are fixedly connected to the bottom surface of the support beam.
[0012] An electric push rod is fixedly connected to the top surface of the support column. A push plate is fixedly connected to the end of the piston rod of the electric push rod. The discharge port and the push plate are both located between two fixed bars. A guide rod is fixedly connected to the bottom surface of the top plate. The guide rod slides through the forming hole. A second sleeve is slidably sleeved on the outer edge of the guide rod. The second sleeve is fixedly connected to the bottom surface of the rotating disk. Two sliding grooves are symmetrically opened on the inner wall of the second sleeve. A slider is slidably connected in the sliding groove. The slider is fixedly connected to the guide rod. A spring is fixedly fixed between the sliding groove and the slider. A cavity is provided in the base. Two second cylinders are symmetrically fixed to the bottom surface of the cavity. A support plate is fixedly connected to the end of the piston rod of the two second cylinders. A top rod is fixedly connected to the top surface of the support plate. The top rod slides through the top wall of the cavity.
[0013] By adopting the above technical solution, the beneficial effects of this utility model are: This invention achieves automatic, real-time cleaning of the rotary forming mold cavity by setting up a lifting fan-shaped plate driven by a first cylinder and a rotating cleaning component driven by it. The sponge sleeve and self-adhesive strip on the cleaning component can effectively scrape off and adhere the sticky material remaining in the mold cavity during rotation, completely avoiding the problem of manual cleaning that requires stopping the machine in the traditional way, greatly reducing the workload of operators and equipment maintenance time, and improving production efficiency. The cleaning component uses flexible material (sponge sleeve) and is combined with self-adhesive strip design, which can not only ensure the cleaning effect and effectively remove the adhering substances, but also avoid the scratches or wear that rigid cleaning tools may cause to the surface of the precision mold cavity, protect the integrity and service life of the forming cavity, and ensure the stable forming quality of subsequent coke products. At the same time, the sponge sleeve is connected to the rotating shaft by bolts, which facilitates the disassembly and replacement of the sponge sleeve. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is the utility model Figure 1 Enlarged view of the structure at point A in the middle; Figure 3 This is a main sectional view of the overall structure of this utility model; Figure 4 This is the utility model Figure 3 Enlarged view of the structure at point B; Figure 5 This is a cross-sectional view of the connection between the sector plate and the rotating shaft of this utility model.
[0015] In the diagram, 1. Base; 2. Rotating disc; 3. First retaining ring; 4. Sector plate; 5. First cylinder; 6. Fixing block; 7. Tank; 8. Discharge port; 9. Pressure column; 10. Support beam; 11. First drive motor; 12. Column; 13. Scraper; 14. Feed hopper; 15. Feed pipe; 16. Frame; 17. Distributor pipe; 18. Driven gear; 19. First drive gear; 20. Second drive motor; 21. 21. Sponge sleeve; 22. Molding hole; 23. Fixing strip; 24. Second retaining ring; 25. Push plate; 26. Electric push rod; 27. Support column; 28. Sealing ring; 29. First sleeve; 30. Annular toothed groove; 31. Cavity; 32. Second cylinder; 33. Support plate; 34. Push rod; 35. Second sleeve; 36. Guide rod; 37. Top plate; 38. Self-adhesive strip; 39. Rotating shaft; 40. Fixing ring; 41. Support ring. Detailed Implementation
[0016] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.
[0017] like Figures 1 to 5 As shown, this type of rotary forming machine for coke includes a base 1, a rotating disk 2 rotatably connected to the top surface of the base 1, multiple forming holes 22 on the top surface of the rotating disk 2, a top plate 37 slidably connected within the forming holes 22, a support column 27 rotatably mounted at the center of the rotating disk 2, the support column 27 being fixed to the top surface of the base 1, a pressing component fixedly connected to the top surface of the support column 27, a groove 7 on one side of the base 1, a sector plate 4 vertically connected above the rotating disk 2, a cleaning component rotatably connected to the bottom surface of the sector plate 4, a feeding component fixedly connected to the top surface of the base 1, a first sleeve 29 fixedly connected to the bottom surface of the rotating disk 2, the first sleeve 29 rotatably connected to the top surface of the base 1, and a section on the inner wall of the first sleeve 29. The annular toothed groove 30 is fixedly connected to the top surface of the base 1, and the output end of the third drive motor is connected to the second drive shaft. The top surface of the second drive shaft is fixedly connected to the second drive gear, which meshes with the annular toothed groove 30. A sealing ring 28 is fixedly sleeved on the outer edge of the support column 27, and a second retaining ring 24 is fixedly sleeved on the outer edge of the sealing ring 28. The second retaining ring 24 is rotatably connected to the top surface of the rotating disk 2. A first retaining ring 3 is fixedly connected to the outer edge of the top surface of the rotating disk 2. A discharge port 8 is opened on the outside of the first retaining ring 3. Two fixing strips 23 are symmetrically fixed on the top surface of the support column 27. A scraper 13 is fixedly connected to the outer edge of the second retaining ring 24, and the scraper 13 is attached to the top surface of the rotating disk 2. The feeding component includes a frame 16 fixedly connected to the top surface of the base 1, a feeding hopper 14 fixedly connected to the end of the frame 16, a feeding pipe 15 fixedly connected to the top surface of the feeding hopper 14, a distributing pipe 17 fixedly connected to the bottom surface of the feeding hopper 14, and a solenoid valve fixedly connected to the bottom surface of the feeding hopper 14. The end of the solenoid valve is fixedly connected to a hollow block, and multiple nozzles are fixedly connected to the bottom surface of the hollow block. The cleaning component includes a first cylinder 5 fixedly connected to the outside of the base 1. The piston rod end of the first cylinder 5 is fixedly connected to a fixing block 6. The fixing block 6 is fixedly connected to a sector plate 4. A rotating shaft 39 is rotatably inserted through the bottom surface of the sector plate 4. A sponge sleeve 21 is fitted on the outer edge of the rotating shaft 39. Multiple self-adhesive strips 38 are fixedly connected to the outside of the sponge sleeve 21. A driven gear 18 is fixedly connected to the top surface of the rotating shaft 39. Multiple driven gears 18 on the same radial line mesh with each other. The outer edge of one of the driven gears 18 meshes with a first driving gear 19. A first drive shaft is fixedly connected to the bottom surface of the first driving gear 19. A second drive motor 20 is driven to the end of the first drive shaft. The second drive motor 20 is fixed to the top surface of the sector plate 4. A support ring 41 is fixedly fitted on the outer edge of the rotating shaft 39. A fixing ring 40 is fixedly connected to the top surface of the sponge sleeve 21. Multiple countersunk holes are opened on the bottom surface of the fixing ring 40. Bolts are fitted in the countersunk holes. A threaded groove is opened on the bottom surface of the support ring 41. Bolts are threadedly connected in the threaded groove. The pressing component includes a column 12 fixedly connected to the top surface of the support column 27. A guide groove is opened on the side of the column 12. A guide block is slidably connected in the guide groove. A screw is threaded through the top surface of the guide block. One end of the screw is rotatably connected to the bottom wall of the guide groove, and the other end rotatably passes through the top wall of the guide groove. A first drive motor 11 is fixedly connected to the top surface of the column 12. The output end of the first drive motor 11 is connected to the end of the screw. A support beam 10 is fixedly connected to the side of the guide block. Multiple pressing columns 9 are fixedly connected to the bottom surface of the support beam 10. An electric push rod 26 is fixedly connected to the top surface of the support column 27. The end of the piston rod of the electric push rod 26 is fixedly connected to the push plate 25. The discharge port 8 and the push plate 25 are both located between two fixed strips 23. The bottom surface of the top plate 37 is fixedly connected to the guide rod 36. The guide rod 36 slides through the forming hole 22. The outer edge of the guide rod 36 is slidably fitted with a second sleeve 35. The second sleeve 35 is fixedly connected to the bottom surface of the rotating disk 2. Two sliding grooves are symmetrically opened on the inner wall of the second sleeve 35. A slider is slidably connected in the sliding groove. The slider is fixedly connected to the guide rod 36. A spring is fixedly fixed between the sliding groove and the slider. A cavity 31 is provided in the base 1. Two second cylinders 32 are symmetrically fixed to the bottom surface of the cavity 31. The end of the piston rod of the two second cylinders 32 is fixedly connected to the support plate 33. The top surface of the support plate 33 is fixedly connected to the top rod 34. The top rod 34 slides through the top wall of the cavity 31.
[0018] Working principle: During use, the third drive motor operates, driving the annular toothed groove 30 inside the first sleeve 29 fixed to the bottom of the rotating disk 2 through the second drive shaft and the second drive gear, thereby driving the entire rotating disk 2 to rotate smoothly on the base 1; powdered raw materials enter the feed hopper 14 from the feed pipe 15, and are evenly sprinkled on the top surface of the rotating disk 2 through the distribution pipe 17; the scraper 13 fixed on the support column 27 scrapes the material and fills it into the evenly distributed forming holes 22 (i.e., mold cavities) around the rotating disk 2 as the rotating disk 2 rotates, completing the pre-filling (pre-pressing); the forming holes 22 filled with material rotate with the rotating disk 2 to the bottom of the pressing component; the first drive motor 11 starts, driving the screw to rotate, driving the guide block threaded to it to rotate vertically along the guide groove of the column 12. The material descends vertically, causing multiple pressure columns 9 fixed to the bottom of the support beam 10 to press down synchronously, applying enormous vertical pressure to the material in the forming hole 22, compacting it into a shaped ball with a certain strength and shape; the formed shaped ball continues to rotate with the rotating disk 2 to the demolding station (corresponding to the discharge port 8); the second cylinder 32 in the cavity 31 is activated, pushing the support plate 33 and the ejector rod 34 upward; the ejector rod 34 passes through the top surface of the base 1 and abuts against the guide rod 36 below the bottom plate 37 of the forming hole 22, overcoming the spring force, and smoothly ejecting the top plate 37 along with the formed shaped ball upward from the forming hole 22; the ejected shaped ball is slightly higher than the top surface of the rotating disk 2; at this time, the continuing to rotate shaped ball will hit the two fixing strips 23 fixed on the support column 27; The fixed strip 23 acts as a rigid scraper 13, scraping the molding ball off the top plate 37. Then, the electric push rod 26 pushes the push plate 25, which pushes the molding ball through the discharge port 8 on the first retaining ring 3 on the outer edge of the rotating disk 2, pushing it out of the rotating disk 2 and into the chute or collection device below, completing the discharge. After the molding hole 22 rotates past the demolding station, the second cylinder 32 retracts, and the push rod 34 descends. At this time, under the action of the spring's rebound force, the guide rod 36 drives the top plate 37 to descend and return to the bottom of the molding hole 22, preparing for the next filling. Then, the empty molding cavity rotates to the bottom of the cleaning part, the first cylinder 5 in the cleaning part starts, its piston rod extends, pushing the fixed block 6 and the fan-shaped plate 4 connected to it to move downward, so that the cleaning part installed at the bottom of the fan-shaped plate 4... The component descends to a predetermined height, ensuring that the sponge sleeve 21 and self-adhesive strip 38 can effectively contact and press into the molding hole 22 that needs to be cleaned; at the same time or after the fan-shaped plate 4 descends, the second drive motor 20 starts, driving the first drive gear 19 to rotate through the first drive shaft; the first drive gear 19 meshes with a driven gear 18, and since multiple driven gears 18 on the same radial line mesh with each other, power is transmitted to all rotating shafts 39, causing all rotating shafts 39 to rotate synchronously; the rotating shafts 39 drive the sponge sleeve 21 and self-adhesive strip 38 on their exterior to rotate at high speed; the rotating sponge sleeve 21 uses its porosity and adsorption to wipe and adsorb the inner wall of the molding hole 22; the self-adhesive strip 38, through adhesion, strongly peels off and removes stubborn sticky residues;The cleaning action is performed continuously on each forming hole 22 passing under the sector plate 4 during the rotation of the turntable; the residue cleaned off is absorbed by the sponge sleeve 21 or adhered and carried away by the self-adhesive strip 38; after the cleaning task is completed, the first cylinder 5 retracts, pulling the sector plate 4 and the entire cleaning part upward, detaching from the turntable 2, and returning to the standby position to avoid interfering with normal forming operations; when the sponge sleeve 21 and the self-adhesive strip 38 are saturated or their adhesiveness decreases, they can be easily replaced; the operator only needs to unscrew the bolts that fix the fixing ring 40 to the support ring 41 to remove the old sponge sleeve 21 assembly and replace it with the new assembly, making maintenance simple and quick.
[0019] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0020] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.
Claims
1. A rotary coke forming machine for briquettes, comprising a base (1), characterized in that, The top surface of the base (1) is rotatably connected to the rotating disk (2). The top surface of the rotating disk (2) has multiple forming holes (22). The top plate (37) is slidably connected in the forming holes (22). The center of the rotating disk (2) is rotatably fitted with a support column (27). The support column (27) is fixed to the top surface of the base (1). The top surface of the support column (27) is fixedly connected with a pressing component. A groove (7) is provided on one side of the base (1). A fan-shaped plate (4) is lifted and connected above the rotating disk (2). A cleaning component is rotatably connected to the bottom surface of the fan-shaped plate (4). A feeding component is fixedly connected to the top surface of the base (1).
2. A rotary moulding machine for briquettes according to claim 1, characterised in that, The feeding component includes a frame (16) fixedly connected to the top surface of the base (1), a feeding hopper (14) fixedly connected to the end of the frame (16), a feeding pipe (15) fixedly connected to the top surface of the feeding hopper (14), and a distributing pipe (17) fixedly connected to the bottom surface of the feeding hopper (14).
3. A rotary moulding machine for briquettes according to claim 1, characterised in that, The cleaning component includes a first cylinder (5) fixedly connected to the outside of the base (1). The piston rod end of the first cylinder (5) is fixedly connected to a fixing block (6). The fixing block (6) is fixedly connected to the sector plate (4). A rotating shaft (39) is rotatably passed through the bottom surface of the sector plate (4). A sponge sleeve (21) is sleeved on the outer edge of the rotating shaft (39). Multiple self-adhesive strips (38) are fixedly connected to the outside of the sponge sleeve (21). A driven gear (18) is fixedly connected to the top surface of the rotating shaft (39). Multiple driven gears (18) on the same radial line mesh with each other. The outer edge of one of the driven gears (18) meshes with a first driving gear (19). A first drive shaft is fixedly connected to the bottom surface of the first driving gear (19). A second drive motor (20) is driven to the end of the first drive shaft. The second drive motor (20) is fixed to the top surface of the sector plate (4).
4. A rotary moulding machine for briquettes according to claim 3, characterised in that, A support ring (41) is fixedly sleeved on the outer edge of the rotating shaft (39), and a fixing ring (40) is fixedly connected to the top surface of the sponge sleeve (21). Multiple countersunk holes are opened on the bottom surface of the fixing ring (40), and bolts are sleeved in the countersunk holes. A threaded groove is opened on the bottom surface of the support ring (41), and the bolts are threadedly connected in the threaded groove.
5. A rotary moulding machine for briquettes according to claim 1, characterised in that, The bottom surface of the rotating disk (2) is fixedly connected to the first sleeve (29), which is rotatably connected to the top surface of the base (1). The inner wall of the first sleeve (29) is provided with an annular toothed groove (30). The top surface of the base (1) is fixedly connected to the third drive motor. The output end of the third drive motor is drivenly connected to the second drive shaft. The top surface of the second drive shaft is fixedly connected to the second drive gear, which meshes with the annular toothed groove (30). The outer edge of the support column (27) is fixedly fitted with a tight-fitting sleeve. A sealing ring (28) is provided with a second retaining ring (24) fixedly fitted on the outer edge of the sealing ring (28). The second retaining ring (24) is rotatably connected to the top surface of the rotating disk (2). The outer edge of the top surface of the rotating disk (2) is fixedly connected to a first retaining ring (3). An outlet (8) is opened on the outside of the first retaining ring (3). Two fixing strips (23) are symmetrically fixed on the top surface of the support column (27). A scraper (13) is fixedly connected to the outer edge of the second retaining ring (24). The scraper (13) is attached to the top surface of the rotating disk (2).
6. A rotary moulding machine for briquettes according to claim 1, characterised in that, The pressing component includes a column (12) fixedly connected to the top surface of the support column (27). A guide groove is opened on the side of the column (12). A guide block is slidably connected in the guide groove. A screw is threaded through the top surface of the guide block. One end of the screw is rotatably connected to the bottom wall of the guide groove, and the other end rotatably passes through the top wall of the guide groove. A first drive motor (11) is fixedly connected to the top surface of the column (12). The output end of the first drive motor (11) is connected to the end of the screw. A support beam (10) is fixedly connected to the side of the guide block. Multiple pressing columns (9) are fixedly connected to the bottom surface of the support beam (10).
7. A rotary moulding machine for briquettes according to claim 5, characterised in that, The top surface of the support column (27) is fixedly connected to an electric push rod (26), and the end of the piston rod of the electric push rod (26) is fixedly connected to a push plate (25). The discharge port (8) and the push plate (25) are both located between the two fixed strips (23). The bottom surface of the top plate (37) is fixedly connected to a guide rod (36), which slides through the forming hole (22). The outer edge of the guide rod (36) is slidably fitted with a second sleeve (35), which is fixedly connected to the bottom surface of the rotating disk (2). Two symmetrical grooves are opened on the inner wall of the sleeve (35). A slider is slidably connected in the groove. The slider is fixedly connected to the guide rod (36). A spring is fixed between the groove and the slider. A cavity (31) is provided in the base (1). Two second cylinders (32) are symmetrically fixed on the bottom surface of the cavity (31). The piston rods of the two second cylinders (32) are fixedly connected to the end of the support plate (33). The top surface of the support plate (33) is fixedly connected to the top rod (34). The top rod (34) slides through the top wall of the cavity (31).
