Plate cutting equipment for hardware machining of hardware products
By setting movable plates, grooves, fixing screws and slots on the cutting table, combined with motor drive and limiting devices, the problem of frequent replacement of plate cutting equipment is solved, efficient and flexible circular cutting is achieved, ensuring cutting accuracy and equipment stability.
Patent Information
- Application Number
- CN202422390770.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-27
AI Technical Summary
In the prior art, when the sheet is cut into a circle of different sizes, the equipment needs to be replaced frequently, resulting in interruption of the production process and it is difficult to ensure cutting accuracy and consistency.
A plate cutting equipment for hardware processing of hardware products was designed. By setting movable plates, grooves, fixed screws and slots on the cutting table, the cutting machine is allowed to adjust its position on the movable plate, and combined with the motor driving the rotating rod and limit block, it ensures that the cutting head rotates and cuts around the center point to reduce position deviation; at the same time, the fixed plates, telescopic rods and pressing plates are used to stabilize the cutting machine track, and a dust storage box and a pumping system are set up to remove dust.
It realizes the adjustment of cutting size without changing the equipment, improves production efficiency and flexibility, ensures cutting accuracy and consistency, extends the equipment life, and reduces cutting errors and safety hazards.
Smart Images
Figure CN223130029U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hardware processing, specifically a sheet cutting device for hardware processing of hardware products. Background Technique
[0002] Hardware products refer to auxiliary and accessory finished products used in daily life and industrial production. There are many types of hardware products, which can be divided into different categories according to their uses and functions, mainly including daily hardware, hand tools, and building hardware, etc.
[0003] In the prior art, usually, the sheet is cut into required parts according to the drawings or design requirements, and then through processes such as stamping, bending, and stretching, the sheet is pressed or stretched into the required shape and size in the mold. Subsequently, the formed parts are trimmed to remove burrs and excess materials at the edges, and then through a series of heat treatments, the finished products can be obtained.
[0004] During long-term use and observation, it is found that when the sheet needs to be cut into circles of different sizes, the processing personnel need to replace different equipment according to different sizes, resulting in frequent interruptions in the production process.
[0005] Therefore, the utility model provides a sheet cutting device for hardware processing of hardware products. Content of the Utility Model
[0006] In order to make up for the deficiencies of the prior art and solve at least one problem proposed in the background technique, a sheet cutting device for hardware processing of hardware products is proposed.
[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: The sheet cutting device for hardware processing of hardware products described in the utility model includes a cutting table; a base is fixedly connected to the side wall of the top of the cutting table; a movable plate is rotatably fitted to the side wall of the top of the base; a groove is formed in the middle of the side wall of the movable plate; a fixed screw is rotatably connected to the middle of the inner side wall of the groove; a slot hole is formed in the side wall of the top of the movable plate; a motor is provided on the side wall of the bottom of the cutting table; a rotating rod is fixedly connected to the output end of the motor; the rotating rod rotates inside the base; a limiting block is threadedly connected to the middle of the side wall of the rotating rod. This step sets the movable plate, groove, fixed screw, and slot hole, which can adjust the size of the circle cut from the sheet by adjusting the position of the cutting machine on the movable plate. There is no need to replace the equipment or perform complex adjustments. Simply adjusting the position can start a new cutting task, thereby improving production efficiency and flexibility, meeting diverse production needs, and this setting can ensure that the cutting head accurately aligns and rotates around the set center point for cutting, so as to cut the sheet into a precise circle and reduce cutting errors caused by position deviation.
[0008] Preferably, a first vertical plate is fixedly connected to the side wall of the top of the cutting table; a fixing plate is fixedly connected to the middle of the side wall of the first vertical plate; a first telescopic rod is fixedly connected to the side wall of the bottom of the fixing plate; a pressing plate is fixedly connected to the end of the first telescopic rod; the pressing plate is arranged above the base; by setting the fixing plate, the first telescopic rod and the pressing plate in this step, the cutting machine can be held down from the top, so that it maintains a more stable trajectory during operation, reduces cutting errors caused by vibration or deviation, and ensures the accuracy and consistency of cutting.
[0009] Preferably, a second telescopic rod is fixedly connected to the side wall of the bottom of the pressing plate; there are multiple second telescopic rods and they are evenly arranged at the bottom of the pressing plate; an elastic pad is fixedly connected to the end of the second telescopic rod; the elastic pad is made of elastic material; by setting the second telescopic rod and the elastic pad in this step, the irregularly shaped cutting machine can be pressed from multiple directions, increasing the flexibility of the device, enabling the device to be applicable to different cutting machines for cutting operations, and this setting helps to better control the movement trajectory of the cutting head, further ensuring the accuracy of the cutting result.
[0010] Preferably, a fixed rod is rotatably fitted to the side wall of the top of the first vertical plate; a rotating plate is rotatably connected to the middle of the side wall of the fixed rod; a pressing rod is threadedly connected to the side wall of the bottom of the rotating plate; a limiting plate is threadedly connected to the end of the pressing rod; the limiting plate is correspondingly arranged with the groove; the limiting plate is slidably fitted with the groove; by setting the fixed rod, the rotating plate, the pressing rod and the limiting plate in this step, the position of the movable plate can be fixed, thereby fixing the position of the cutting machine during cutting, reducing the situation that the movable plate deviates during the cutting task, resulting in the cutting machine deviating from the predetermined cutting trajectory during cutting, and thus the size of the cut plate is inaccurate and the shape is irregular.
[0011] Preferably, a second vertical plate is fixedly connected to the side wall of the top of the cutting table; a dust storage box is fixedly connected to the middle of the side wall of the second vertical plate; an air extraction pipe is fixedly connected to the middle of the side wall of the dust storage box; an air inlet pipe is fixedly connected to the side wall of the top of the dust storage box; there are multiple air inlet pipes and they are regularly arranged in a linear array on the top of the dust storage box; a corrugated pipe is fixedly connected to the end of the air inlet pipe; the corrugated pipe is made of deformable material; the dust storage box, the air extraction pipe, the air inlet pipe and the corrugated pipe are hollow and connected; by setting the dust storage box, the air extraction pipe, the air inlet pipe and the corrugated pipe in this step, the situation that dust particles adhere to the surface of the cutting machine or enter the interior of the cutting machine, causing the cutting machine to malfunction and be damaged, can be reduced, the service life of the equipment can be extended, and the dust particles scattered on the surface of the plate will affect the cutting accuracy. Using this setting to suck away the dust particles can ensure the cleanliness of the surface of the cut plate, thereby improving the cutting accuracy.
[0012] Preferably, a plurality of fixing rings are fixedly connected to the side wall of the top of the second vertical plate; the fixing rings and the air inlet pipes are arranged correspondingly; the air inlet pipes slide inside the fixing rings; by setting the fixing rings in this step, the positions of a plurality of air inlet pipes can be fixed, reducing potential safety hazards caused by the unfixed air inlet pipes winding around other components.
[0013] Preferably, a lubricating block is rotatably connected to the middle of the side wall of the rotating rod; the lubricating block is arranged on the top of the base; by setting the lubricating block between the plate and the base in this step, the frictional resistance between the plate and the base during the cutting process can be reduced, making the rotation process smoother and ensuring the continuity of the cutting process.
[0014] The beneficial effects of the present utility model are as follows:
[0015] 1. For the sheet cutting equipment for hardware processing of hardware products of the present utility model, by setting the movable plate, the groove, the fixing screw and the slot hole, the size of the circle cut from the sheet can be adjusted by adjusting the position of the cutting machine on the movable plate. There is no need to replace the equipment or perform complex adjustments. Simply adjusting the position can start a new cutting task, thereby improving production efficiency and flexibility, meeting diverse production requirements, and this setting can ensure that the cutting head accurately aligns and rotates around the set center point for cutting, thus cutting the sheet into an accurate circle and reducing cutting errors caused by position deviation.
[0016] 2. For the sheet cutting equipment for hardware processing of hardware products of the present utility model, by setting the fixing plate, the first telescopic rod and the pressing plate, the cutting machine can be held from the top, making its running trajectory more stable, reducing cutting errors caused by vibration or deviation, and ensuring the accuracy and consistency of cutting. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present utility model will be further described below with reference to the accompanying drawings.
[0018] Figure 1 is a three-dimensional view of the present utility model;
[0019] Figure 2 is a schematic diagram of the mating structure of the movable plate and the base of the present utility model;
[0020] Figure 3 is a schematic diagram of the mating structure of the movable plate and the limiting plate of the present utility model;
[0021] Figure 4 is a schematic diagram of the mating structure of the fixing ring and the air inlet pipe of the present utility model.
[0022] Legend Explanation:
[0023] 1. Cutting table; 11. Base; 12. Movable plate; 13. Groove; 14. Fixed screw; 15. Slot hole; 16. Motor; 17. Rotating rod; 18. Limiting block; 2. First vertical plate; 21. Fixed plate; 22. First telescopic rod; 23. Pressing plate; 3. Second telescopic rod; 31. Elastic pad; 4. Fixed rod; 41. Rotating plate; 42. Pressing rod; 43. Limiting plate; 5. Dust storage box; 51. Exhaust pipe; 52. Intake pipe; 53. Bellows; 54. Second vertical plate; 6. Fixed ring; 7. Lubricating block. Detailed implementation manners
[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0025] The following gives specific embodiments.
[0026] As Figures 1 to 4As shown in the figure, the sheet cutting equipment for hardware processing of the hardware products in the embodiment of the present utility model includes a cutting table 1; a base 11 is fixedly connected to the side wall of the top of the cutting table 1; a movable plate 12 is rotatably fitted to the side wall of the top of the base 11; a groove 13 is formed in the middle of the side wall of the movable plate 12; a fixing screw 14 is rotatably connected to the middle of the inner side wall of the groove 13; a slot hole 15 is formed in the side wall of the top of the movable plate 12; a motor 16 is provided on the side wall of the bottom of the cutting table 1; a rotating rod 17 is fixedly connected to the output end of the motor 16; the rotating rod 17 rotates inside the base 11; a limiting block 18 is threadedly connected to the middle of the side wall of the rotating rod 17; during operation, the processing personnel place the sheet to be cut into a circular product on the top of the base 11. At this time, the center of the sheet passes through the rotating rod 17. Then, the limiting block 18 is sleeved on the rotating rod 17 to fix the position of the sheet to be cut. Subsequently, the processing personnel place the cutting machine on the top of the movable plate 12 and insert the fixing member equipped with it into the slot hole 15 to fix the cutting machine on the top of the movable plate 12. Then, the processing personnel adjust the position of the movable plate 12 on the top of the base 11 according to the size of the sheet to be cut, so that the cutting machine fixed on the top of the movable plate 12 just cuts along the established circular track on the sheet. Then, the fixing screw 14 is inserted into the groove 13 to fix the position of the movable plate 12 at this time. At this time, the motor 16 is started, the motor 16 drives the rotating rod 17 to rotate, the rotating rod 17 drives the sheet to be cut to rotate synchronously. Then, the cutting machine is started, and the sheet is cut into a circle during the rotation process. This step sets the movable plate 12, the groove 13, the fixing screw 14 and the slot hole 15, and the size of the circle cut from the sheet can be adjusted by adjusting the position of the cutting machine on the movable plate 12. There is no need to replace the equipment or perform complex adjustments. Simply adjusting the position can start a new cutting task, thereby improving production efficiency and flexibility, meeting diverse production needs. And this setting can ensure that the cutting head accurately aligns and rotates around the set center point for cutting, so as to cut the sheet into an accurate circle and reduce the cutting error caused by position deviation.
[0027] As Figure 1 , Figure 3 and Figure 4As shown, a first vertical plate 2 is fixedly connected to the top side wall of the cutting table 1; a fixing plate 21 is fixedly connected to the middle of the side wall of the first vertical plate 2; a first telescopic rod 22 is fixedly connected to the bottom side wall of the fixing plate 21; a pressing plate 23 is fixedly connected to the end of the first telescopic rod 22; the pressing plate 23 is arranged above the base 11; during work, the operator lifts the pressing plate 23 upwards to make the pressing plate 23 leave the surface of the movable plate 12, then fixes the cutting machine on the top of the movable plate 12 through the slot hole 15, and then turns the movable plate 12 to the position where cutting operation is to be carried out. At this time, the cutting machine is directly below the pressing plate 23. Then the operator releases the control of the pressing plate 23, so that the pressing plate 23 presses on the surface of the cutting machine under the action of the first telescopic rod 22. By setting the fixing plate 21, the first telescopic rod 22 and the pressing plate 23, this step can hold the cutting machine from the top, so that it maintains a more stable trajectory during operation, reduces cutting errors caused by vibration or deviation, and ensures the accuracy and consistency of cutting.
[0028] As Figure 1 shown, a second telescopic rod 3 is fixedly connected to the bottom side wall of the pressing plate 23; there are multiple second telescopic rods 3 and they are evenly arranged at the bottom of the pressing plate 23; an elastic pad 31 is fixedly connected to the end of the second telescopic rod 3; the elastic pad 31 is made of elastic material; during work, when the pressing plate 23 presses on the cutting machine, multiple elastic pads 31 at the bottom of the pressing plate 23 will undergo elastic deformation under the action of the second telescopic rod 3, and then press on the cutting machine from multiple directions. By setting the second telescopic rod 3 and the elastic pad 31, this step can press on the cutting machine with irregular shape from multiple directions, increase the flexibility of the device, make the device applicable to different cutting machines for cutting operations, and this setting helps to better control the movement trajectory of the cutting head and further ensure the accuracy of the cutting result.
[0029] As Figure 1 and Figure 3As shown in the figure, a fixed rod 4 is rotatably fitted to the top side wall of the first vertical plate 2; a rotating plate 41 is rotatably connected to the middle of the side wall of the fixed rod 4; a pressing rod 42 is threadedly connected to the bottom side wall of the rotating plate 41; a limiting plate 43 is threadedly connected to the end of the pressing rod 42; the limiting plate 43 is arranged corresponding to the groove 13; the limiting plate 43 is slidably fitted with the groove 13; during operation, when the cutting machine is installed and ready for the cutting task, the operator inserts the limiting plate 43 into the groove 13, then threadedly connects the pressing rod 42 with the limiting plate 43, and then rotates the rotating plate 41 so that the rotating plate 41 is perpendicular to the first vertical plate 2. At this time, the rotating plate 41 is fixed by using the fixed rod 4, and then the rotating plate 41 and the pressing rod 42 are threadedly connected together. At this time, the limiting plate 43 will be fixed by the rotating plate 41 and the pressing rod 42, and the position of the movable plate 12 will be fixed by the limiting plate 43. By setting the fixed rod 4, the rotating plate 41, the pressing rod 42 and the limiting plate 43, the position of the movable plate 12 can be fixed, so as to fix the position of the cutting machine during cutting, reduce the deviation of the movable plate 12 during the cutting task, which causes the cutting machine to deviate from the predetermined cutting trajectory during cutting, resulting in inaccurate dimensions and irregular shapes of the cut plates.
[0030] As Figure 1 and Figure 4 shown in the figure, a second vertical plate 54 is fixedly connected to the top side wall of the cutting table 1; a dust storage box 5 is fixedly connected to the middle of the side wall of the second vertical plate 54; an air extraction pipe 51 is fixedly connected to the middle of the side wall of the dust storage box 5; an air inlet pipe 52 is fixedly connected to the top side wall of the dust storage box 5; there are multiple air inlet pipes 52 and they are arranged regularly in a linear array on the top of the dust storage box 5; a corrugated pipe 53 is fixedly connected to the end of the air inlet pipe 52; the corrugated pipe 53 is made of deformable material; the dust storage box 5, the air extraction pipe 51, the air inlet pipe 52 and the corrugated pipe 53 are hollow and connected; during operation, the operator connects the exhaust fan with the air extraction pipe 51, and then starts the exhaust fan. Because the dust storage box 5, the air extraction pipe 51, the air inlet pipe 52 and the corrugated pipe 53 are connected, the air flow will flow from the corrugated pipe 53 to the air extraction pipe 51. By adjusting the angles of the multiple corrugated pipes 53, the dust and other particles accumulated on the surface of the cutting table 1 due to the cutting operation can be sucked into the dust storage box 5. By setting the dust storage box 5, the air extraction pipe 51, the air inlet pipe 52 and the corrugated pipe 53, the situation that dust particles adhere to the surface of the cutting machine or enter the cutting machine, resulting in the failure and damage of the cutting machine, can be reduced, and the service life of the equipment can be extended. Moreover, the dust particles scattered on the surface of the plate will affect the cutting accuracy. Using this setting to suck away the dust particles can ensure the cleanliness of the surface of the cut plate, thereby improving the cutting accuracy.
[0031] As Figure 1 and Figure 4As shown, a plurality of fixing rings 6 are fixedly connected to the top side wall of the second vertical plate 54; the fixing rings 6 and the air inlet pipes 52 are arranged correspondingly; the air inlet pipes 52 slide inside the fixing rings 6. By setting the fixing rings 6 in this step, the positions of the plurality of air inlet pipes 52 can be fixed, reducing potential safety hazards caused by the unfixed air inlet pipes 52 winding around other components.
[0032] As Figure 4 As shown, a lubricating block 7 is rotatably connected to the middle of the side wall of the rotating rod 17; the lubricating block 7 is arranged on the top of the base 11. By setting the lubricating block 7 between the plate and the base 11 in this step, the frictional resistance between the plate and the base 11 during the cutting process can be reduced, making the rotation process smoother and ensuring the continuity of the cutting process.
[0033] Working principle: The processing personnel place the plate to be cut into a circular product on the top of the base 11. At this time, the center of the plate passes through the rotating rod 17. Then, the limiting block 18 is sleeved on the rotating rod 17 to fix the position of the plate to be cut. Subsequently, the processing personnel place the cutting machine on the top of the movable plate 12 and insert the fixing parts equipped on it into the slot holes 15 to fix the cutting machine on the top of the movable plate 12. Then, according to the size of the plate to be cut, the processing personnel adjust the position of the movable plate 12 on the top of the base 11 so that the cutting machine fixed on the top of the movable plate 12 just cuts along the established circular track on the plate. Then, the fixing screw 14 is inserted into the groove 13 to fix the position of the movable plate 12 at this time. At this time, the motor 16 is started, and the motor 16 drives the rotating rod 17 to rotate. The rotating rod 17 drives the plate to be cut to rotate synchronously. Then, the cutting machine is started, and the plate is cut into a circle during the rotation process. The processing personnel lift the pressing plate 23 upward so that the pressing plate 23 leaves the surface of the movable plate 12. Then, the cutting machine is fixed on the top of the movable plate 12 through the slot holes 15, and the movable plate 12 is rotated to the position where the cutting operation is to be carried out. At this time, the cutting machine is directly below the pressing plate 23. Then, the processing personnel release the control of the pressing plate 23, and the pressing plate 23 presses on the surface of the cutting machine under the action of the first telescopic rod 22. When the pressing plate 23 presses on the cutting machine, multiple elastic pads 31 at the bottom of the pressing plate 23 will undergo elastic deformation under the action of the second telescopic rod 3 and then press on the cutting machine from multiple directions. When the cutting machine is installed and ready for the cutting task, the processing personnel insert the limiting plate 43 into the groove 13, then thread the pressing rod 42 with the limiting plate 43, and then rotate the rotating plate 41 so that the rotating plate 41 is in a vertical position with the first vertical plate 2. At this time, the rotating plate 41 is fixed with the fixing rod 4, and then the rotating plate 41 and the pressing rod 42 are threaded together. At this time, the limiting plate 43 will be fixed by the rotating plate 41 and the pressing rod 42, and the position of the movable plate 12 will be fixed by the limiting plate 43. The processing personnel connect the exhaust fan and the exhaust pipe 51, and then start the exhaust fan. Because the dust storage box 5, the exhaust pipe 51, the air inlet pipe 52 and the corrugated pipe 53 are connected, the air flow will flow from the corrugated pipe 53 to the exhaust pipe 51. By adjusting the angles of multiple corrugated pipes 53, the dust and other particles accumulated on the surface of the cutting table 1 due to the cutting operation can be sucked into the dust storage box 5. By setting the fixing ring 6, the positions of multiple air inlet pipes 52 can be fixed, reducing the safety hazards caused by the unfixed air inlet pipes 52 winding around other components. By setting the lubricating block 7 between the plate and the base 11, the frictional resistance between the plate and the base 11 during the cutting process can be reduced, making the rotation process smoother and ensuring the continuity of the cutting process.
[0034] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. Sheet cutting equipment for hardware products and hardware processing, including a cutting table (1); characterized in that: A base (11) is fixedly connected to the top side wall of the cutting table (1); a movable plate (12) is rotatably fitted to the top side wall of the base (11); a groove (13) is formed in the middle of the side wall of the movable plate (12); a fixing screw (14) is rotatably connected to the middle of the inner side wall of the groove (13); a slot hole (15) is formed in the top side wall of the movable plate (12); a motor (16) is provided on the bottom side wall of the cutting table (1); a rotating rod (17) is fixedly connected to the output end of the motor (16); the rotating rod (17) rotates inside the base (11); a limiting block (18) is threadedly connected to the middle of the side wall of the rotating rod (17).
2. The sheet cutting equipment for hardware product processing according to claim 1, wherein: A first vertical plate (2) is fixedly connected to the top side wall of the cutting table (1); a fixing plate (21) is fixedly connected to the middle of the side wall of the first vertical plate (2); a first telescopic rod (22) is fixedly connected to the bottom side wall of the fixing plate (21); a pressing plate (23) is fixedly connected to the end of the first telescopic rod (22); the pressing plate (23) is arranged above the base (11).
3. The sheet cutting equipment for hardware products processing according to claim 2, wherein: A second telescopic rod (3) is fixedly connected to the bottom side wall of the pressing plate (23); the second telescopic rods (3) are multiple and are evenly arranged at the bottom of the pressing plate (23); an elastic pad (31) is fixedly connected to the end of the second telescopic rod (3); the elastic pad (31) is made of an elastic material.
4. The sheet cutting equipment for hardware product processing according to claim 2, characterized in that: A fixing rod (4) is rotatably fitted to the top side wall of the first vertical plate (2); a rotating plate (41) is rotatably connected to the middle of the side wall of the fixing rod (4); a pressing rod (42) is threadedly connected to the bottom side wall of the rotating plate (41); a limiting plate (43) is threadedly connected to the end of the pressing rod (42); the limiting plate (43) is arranged corresponding to the groove (13); the limiting plate (43) is slidably fitted with the groove (13).
5. The sheet cutting device for hardware processing of the hardware product according to claim 2, wherein: A second vertical plate (54) is fixedly connected to the top side wall of the cutting table (1); a dust storage box (5) is fixedly connected to the middle of the side wall of the second vertical plate (54); an air extraction pipe (51) is fixedly connected to the middle of the side wall of the dust storage box (5); an air inlet pipe (52) is fixedly connected to the top side wall of the dust storage box (5); the air inlet pipes (52) are multiple and are regularly arranged in a linear array at the top of the dust storage box (5); a corrugated pipe (53) is fixedly connected to the end of the air inlet pipe (52); the corrugated pipe (53) is made of a deformable material; the dust storage box (5), the air extraction pipe (51), the air inlet pipe (52) and the corrugated pipe (53) are hollow and communicated with each other.
6. The sheet cutting device for hardware processing of the hardware product according to claim 5, characterized in that: A plurality of fixing rings (6) are fixedly connected to the top side wall of the second vertical plate (54); the fixing rings (6) are arranged corresponding to the air inlet pipes (52); the air inlet pipes (52) slide inside the fixing rings (6).
7. The sheet cutting equipment for hardware processing of the hardware products according to claim 1, characterized in that: A lubricating block (7) is rotatably connected to the middle of the side wall of the rotating rod (17); the lubricating block (7) is arranged on the top of the base (11).