Belt box grinding unloading supporting device of numerical control roll grinder
By designing self-locking and buffer protection components on the CNC roll grinding machine, the problems of cylinder bursting and poor buffering effect of the support cylinder were solved, achieving stable support of the roll and improving the safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI OWADE CNC EQUIPMENT CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-14
AI Technical Summary
The hydraulic cylinders supporting existing CNC roll grinding machines are prone to bursting during use, leading to roll position displacement and equipment damage. Furthermore, traditional buffer devices are ineffective under high-speed and heavy-load conditions.
Design a CNC roll grinding machine with a grinding box unloading support device. It adopts a self-locking protection component and a buffer protection component. The mechanical self-locking is achieved through the helical tooth structure of the limit block and the protective rod. Combined with the buffer airbag to absorb impact energy, it reduces hard collisions and equipment wear.
It effectively prevents rolls from falling, improves equipment safety and operational reliability, extends service life, reduces equipment wear, and enhances equipment stability.
Smart Images
Figure CN224115755U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rolling mill production technology, specifically to a CNC rolling mill grinding machine with a grinding box unloading support device. Background Technology
[0002] CNC roll grinding machines are mainly used in steel, non-ferrous metals, papermaking, and machinery factories to process and grind cylindrical workpieces. During the roll production process, after the bearing housing is flipped up, the head and tailstock end support cylinders extend and retract to the working state. Pressure sensing devices are installed on the end face of the support cylinders. When the lifting force reaches the set weight, the cylinder action automatically stops. The support cylinders can unload 80% of the weight of the bearing seat.
[0003] In actual use, the seals of the hydraulic cylinder may age and wear over time, leading to hydraulic oil leakage. This causes uneven pressure distribution inside the cylinder, with excessively high local pressure potentially causing the cylinder to burst. The burst results in a sudden drop in pressure at one end, causing the roll to lose some support and shift its position. This results in deviations in geometric accuracy, such as roll cylindricity and roundness, and can also damage the roll surface and grinding equipment. Furthermore, traditional hydraulic cylinders use buffer pads on the piston or cylinder head to slow down the piston's movement, but this buffering effect has significant limitations and cannot meet the stringent requirements for buffering performance under high-speed, heavy-load conditions. To address these problems, the inventors propose a grinding unloading support device for CNC roll grinding machines with a grinding box to solve these issues. Utility Model Content
[0004] In order to solve the problems of cylinder explosion protection and improve buffer protection of the support cylinder, the purpose of this utility model is to provide a support device for unloading the grinding of CNC roll grinding machine with box.
[0005] To solve the above technical problems, the present invention adopts the following technical solution: a CNC roll grinding machine with a box grinding unloading support device, including a housing, a hydraulic cylinder assembly in the middle of the inner side of the housing, an end face fixedly connected to the driving end of the hydraulic cylinder assembly, a self-locking protection assembly in the end face, two symmetrically distributed buffer protection assemblies in the bottom of the self-locking protection assembly, a pressure sensor in the top of the end face, and an internal plate fixedly installed on the inner wall of the housing.
[0006] Preferably, the self-locking protective assembly includes two symmetrically distributed protective rods, each protective rod having two sets of limiting grooves. Two connecting seats are fixedly installed on the inner wall of the housing corresponding to the protective rod positions. Two symmetrically distributed limiting blocks are slidably assembled within each connecting seat. The ends of the limiting blocks and the limiting grooves of the protective rods form a sliding fit structure. Two symmetrically distributed insert rods are fixedly installed on the side of the limiting block near the connecting seat, and the insert rods penetrate the connecting seat. A return spring is sleeved on the outer wall of the insert rod, and both ends of the return spring are fixedly connected to the limiting block and the connecting seat, respectively. Two symmetrically distributed guide rods are fixedly installed at the top of the inner plate, and an electric cylinder is fixedly installed between the two guide rods. A lifting plate is slidably sleeved on the outer wall of the guide rod, and the lifting plate is fixedly connected to the driving end of the electric cylinder. Protrusions that cooperate with the limiting blocks are fixedly installed on both ends of the lifting plate. A limiting frame is slidably installed on the outer wall of the protective rod, and the limiting frame is fixedly connected to the housing.
[0007] Preferably, the buffer protection assembly includes a base and a top seat. The base is fixedly installed at the bottom of the housing, and the top seat is located directly above the base. The two are vertically symmetrically distributed. A fixing block is fixedly provided on the opposite side of the base and the top seat. A sliding frame is slidably provided near the two fixing blocks. A buffer airbag is provided between the two fixing blocks and is installed in the middle of the sliding frame. Two symmetrically distributed sliders are slidably provided in the sliding frame. A fixing shaft is fixedly provided in the middle of both sides of the two sliders. Two connecting rods are rotatably provided on the outer wall of the fixing shaft. The other end of the two connecting rods is rotatably connected to the corresponding base and the top seat, respectively.
[0008] Preferably, the cylinder assembly includes a cylinder barrel and a rear cover. The rear cover is fixedly installed at the bottom of the housing, and the cylinder barrel is fixedly installed at the top of the rear cover, with the cylinder barrel and the rear cover being connected through. A front cover is connected through to the top of the cylinder barrel. A piston is slidably sealed to the inner wall of the cylinder barrel. A rod is fixedly installed at the top of the piston, and the rod is slidably connected to the front cover. The middle part of the bottom end of the piston face is fixedly connected to the top of the rod. A rod seal is provided inside the front cover to cooperate with the rod. A buffer pad is fixedly provided at the top of the front cover.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0010] 1. This utility model incorporates a self-locking protective component, with a limiting block embedded in the limiting groove of the protective rod. The groove and block employ a helical tooth structure. When the protective rod rises, the helical teeth ensure unobstructed movement. When the protective rod needs to be locked, the horizontal structure at the top of the groove and block, in conjunction with a return spring, firmly weds the limiting block into place, achieving mechanical self-locking. This effectively prevents the protective rod from accidentally sliding down, avoids the roll falling due to hydraulic failure, provides stable support for roll production, and significantly improves equipment safety and operational reliability.
[0011] 2. By setting up a buffer protection component, the top seat and the base squeeze and deform the buffer airbag during relative movement. The buffer airbag absorbs the impact energy through its own deformation, effectively mitigating the impact force generated when the end face descends and the protective rod contacts the top seat. At the same time, it buffers and attenuates the transmission of impact force, thereby reducing the rigid collision between the rod body and the buffer pad in the oil cylinder. Through the above operation, the hard collision of components is reduced, equipment wear is reduced, the stability of equipment operation is improved, and the overall service life is extended. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;
[0015] Figure 3 This is a schematic diagram of the self-locking protective component in this utility model;
[0016] Figure 4 This is a side-section diagram of the self-locking protective component in this utility model;
[0017] Figure 5 This is a schematic diagram of the disassembled structure of the buffer protection component in this utility model;
[0018] Figure 6 This is a schematic diagram of the structure of the hydraulic cylinder assembly in this utility model;
[0019] Figure 7 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;
[0020] Figure 8 for Figure 5 Enlarged schematic diagram of the structure at point B.
[0021] In the diagram: 1. Housing; 2. Hydraulic cylinder assembly; 21. Cylinder barrel; 22. Rear cover; 23. Front cover; 24. Rod body; 25. Piston; 26. Rod seal; 27. Buffer pad; 3. End face; 4. Self-locking protection assembly; 41. Protective rod; 42. Connecting seat; 43. Limiting block; 44. Insert rod; 45. Return spring; 46. Limiting frame; 47. Guide rod; 48. Lifting plate; 49. Protrusion; 410. Electric cylinder; 5. Buffer protection assembly; 51. Base; 52. Top seat; 53. Fixing block; 54. Sliding frame; 55. Buffer airbag; 56. Slider; 57. Connecting rod; 6. Pressure sensor; 7. Internal plate. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] like Figure 1-8 As shown, this utility model provides a CNC roll grinding machine with a box grinding unloading support device, including a housing 1, a hydraulic cylinder assembly 2 is provided in the middle of the inner side of the housing 1, the driving end of the hydraulic cylinder assembly 2 is fixedly connected to an end face 3, a self-locking protection assembly 4 is provided on the end face 3, two symmetrically distributed buffer protection assemblies 5 are provided at the bottom of the self-locking protection assembly 4, a pressure sensor 6 is provided at the top of the end face 3, and an internal plate 7 is fixedly provided on the inner wall of the housing 1.
[0024] The self-locking protective assembly 4 includes two symmetrically distributed protective rods 41. Each protective rod 41 is provided with two sets of limiting grooves. The inner wall of the housing 1 is fixedly provided with two connecting seats 42 corresponding to the position of the protective rod 41. Each connecting seat 42 is slidably fitted with two symmetrically distributed limiting blocks 43. The ends of the limiting blocks 43 and the limiting grooves of the protective rods 41 form a sliding fit structure.
[0025] By adopting the above technical solution, the limiting block 43 is inserted into the limiting groove on the protective rod 41, thereby achieving self-locking of the protective rod 41.
[0026] The buffer protection component 5 includes a base 51 and a top seat 52. The base 51 is fixedly installed at the bottom of the housing 1, and the top seat 52 is located directly above the base 51. The two are vertically symmetrically distributed. A fixing block 53 is fixedly provided on the opposite side of the base 51 and the top seat 52. A sliding frame 54 is slidably provided near the two fixing blocks 53. A buffer airbag 55 is provided between the two fixing blocks 53, and the buffer airbag 55 is installed in the middle of the sliding frame 54.
[0027] By adopting the above technical solution, the two fixed blocks 53 are brought close to each other to compress the buffer airbag 55, thereby achieving the buffering function.
[0028] The hydraulic cylinder assembly 2 includes a cylinder barrel 21 and a rear cover 22. The rear cover 22 is fixedly installed at the bottom of the housing 1, and the cylinder barrel 21 is fixedly installed at the top of the rear cover 22. The cylinder barrel 21 and the rear cover 22 are connected through the cylinder barrel 21. A front cover 23 is connected through the top of the cylinder barrel 21. A piston 25 is slidably and sealingly connected to the inner wall of the cylinder barrel 21. A rod 24 is fixedly installed at the top of the piston 25 and is slidably connected to the front cover 23. The bottom middle of the end face 3 is fixedly connected to the top of the rod 24.
[0029] By adopting the above technical solution, by inputting hydraulic oil into the cylinder 21, the piston 25 can be pushed to slide inside the cylinder 21, which in turn drives the rod 24 to make linear motion, thereby realizing functions such as lifting or supporting the end face 3.
[0030] Two symmetrically distributed insertion rods 44 are fixedly provided on the side of the limiting block 43 near the connecting seat 42, and the insertion rods 44 penetrate the connecting seat 42. A return spring 45 is sleeved on the outer wall of the insertion rod 44, and the two ends of the return spring 45 are fixedly connected to the limiting block 43 and the connecting seat 42 respectively.
[0031] By adopting the above technical solution, the reset spring 45 pushes the limit block 43 to reset, maintaining the stable limit function of the self-locking protection component 4.
[0032] Two symmetrically distributed guide rods 47 are fixedly provided at the top of the built-in plate 7. An electric cylinder 410 is fixedly provided between the two guide rods 47. A lifting plate 48 is slidably sleeved on the outer wall of the guide rods 47, and the lifting plate 48 is fixedly connected to the driving end of the electric cylinder 410. Both ends of the lifting plate 48 are fixedly provided with protrusions 49 that cooperate with the limiting block 43.
[0033] By adopting the above technical solution, the lifting plate 48 rises and the protrusion 49 drives the two limiting blocks 43 to move away from each other, thereby releasing the locking state of the protective rod 41.
[0034] The sliding frame 54 has two symmetrically distributed sliders 56. The middle of both sides of the two sliders 56 is fixedly provided with a fixed shaft, and two connecting rods 57 are rotatably provided on the outer wall of the fixed shaft. The other end of the two connecting rods 57 is rotatably connected to the corresponding base 51 and top seat 52 respectively.
[0035] By adopting the above technical solution, the relative movement of the base 51 and the top seat 52 is transformed into the sliding of the slider 56 within the slide frame 54, which, together with the buffer airbag 55, achieves the buffering function, while ensuring the stability of the movement and the reliability of the buffering effect.
[0036] The front cover 23 has a rod seal 26 inside that works in conjunction with the rod body 24, and a buffer pad 27 is fixedly provided at the top of the front cover 23.
[0037] By adopting the above technical solution, the rod seal 26 can effectively prevent hydraulic oil leakage, while the buffer pad 27 can play a buffering role when the rod 24 moves to the limit position.
[0038] A limiting frame 46 is slidably provided on the outer wall of the protective rod 41, and the limiting frame 46 is fixedly connected to the housing 1.
[0039] By adopting the above technical solution, the limiting frame 46 provides precise guidance for the sliding of the protective rod 41.
[0040] Working principle: In practical applications, after the bearing housing is flipped up, the head and tailstock end support cylinders extend and retract to the working state, such as... Figure 6 As shown, the oil inlet and outlet ends of the front cover 23 and the rear cover 22 are connected by an external hydraulic pump station via pipelines. Hydraulic oil is input into the rear cover 22 through the hydraulic pump station and extracted from the front cover 23. Under the action of hydraulic oil pressure, the piston 25 and the rod 24 are pushed to slide upward in the cylinder 21. The rod 24 passes through the front cover 23. The rod seal 26 inside the front cover 23 plays a sealing role to prevent hydraulic oil leakage. The rod 24 drives the end face 3 to move upward to contact the roller and provide stable support force. When the top force on the pressure sensor 6 reaches the set weight, the cylinder action automatically stops. At this time, the system enters the pressure holding state to ensure that the support force is stable and reliable.
[0041] During the upward movement of end face 3, such as Figure 3 and Figure 4 As shown, this will cause the guard rods 41 on both sides to rise synchronously. The guard rod 41 is provided with a helical tooth-shaped limiting groove. Under the action of the return spring 45, the limiting block 43 moves towards the guard rod 41 and is embedded in the limiting groove. Since the helical tooth structure of the limiting groove and the limiting block 43 is inclined at the lower end, the guard rod 41 is not restricted by its self-locking when it rises. Once the hydraulic cylinder bursts and loses its supporting force, the force of the roll will directly act on the guard rod 41. At this time, since the top of the limiting groove and the limiting block 43 is a horizontal structure, the limiting block 43 will be firmly embedded in the limiting groove, realizing the mechanical locking of the guard rod 41, preventing the guard rod 41 from accidentally sliding down, and ensuring the safety of the equipment and the roll.
[0042] When the locking needs to be released, the drive end of the control cylinder 410 extends, pushing the lifting plate 48 to slide upward along the guide rod 47. The protrusions 49 on both sides of the lifting plate 48 rise accordingly, and the protrusions 49 contact the limiting block 43 and apply a pushing force to overcome the elastic force of the return spring 45. This causes the limiting block 43 to drive the insertion rod 44 to slide along the connecting seat 42, and the two limiting blocks 43 separate in opposite directions. After the limiting block 43 disengages from the limiting groove, the hydraulic pump station changes the flow direction of the hydraulic oil, drawing hydraulic oil out of the rear cover 22 and inputting hydraulic oil into the front cover 23. Under the reverse pressure of the hydraulic oil and the weight of the piston 25 and the rod 24, the piston 25 and the rod 24 slide downward in the cylinder 21. The rod 24 drives the end face 3 to move downward and separate from the roller, completing the reset action of the support cylinder.
[0043] When end face 3 descends, it will drive the protective rod 41 to descend synchronously. The protective rod 41 first contacts the top seat 52. As end face 3 continues to descend, the top seat 52 is displaced relative to the base 51. During this process, the two sliders 56 in the sliding frame 54 slide relative to each other along the sliding frame 54 under the transmission action of the connecting rod 57, so that the buffer airbag 55 is squeezed and deformed, absorbing and buffering the impact force during this process, and preventing the parts from being damaged by hard collision.
[0044] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A CNC roll grinding machine with a grinding box unloading support device, comprising a housing (1), characterized in that: The inner middle of the housing (1) is provided with a hydraulic cylinder assembly (2), the driving end of the hydraulic cylinder assembly (2) is fixedly connected to an end face (3), a self-locking protection assembly (4) is provided on the end face (3), two symmetrically distributed buffer protection assemblies (5) are provided at the bottom of the self-locking protection assembly (4), a pressure sensor (6) is provided at the top of the end face (3), and an internal plate (7) is fixedly provided on the inner wall of the housing (1). The self-locking protective assembly (4) includes two symmetrically distributed protective rods (41). Each protective rod (41) is provided with two sets of limiting grooves. The inner wall of the housing (1) is fixedly provided with two connecting seats (42) corresponding to the protective rods (41). Each connecting seat (42) is slidably fitted with two symmetrically distributed limiting blocks (43). The ends of the limiting blocks (43) and the limiting grooves of the protective rods (41) form a sliding fit structure.
2. The unloading support device for CNC roll grinding machine with grinding box as described in claim 1, characterized in that, The buffer protection component (5) includes a base (51) and a top seat (52). The base (51) is fixedly installed at the bottom of the housing (1), and the top seat (52) is located directly above the base (51). The two are vertically symmetrically distributed. A fixing block (53) is fixedly provided on the opposite side of the base (51) and the top seat (52). A sliding frame (54) is slidably provided near the two fixing blocks (53). A buffer airbag (55) is provided between the two fixing blocks (53), and the buffer airbag (55) is installed in the middle of the sliding frame (54).
3. The unloading support device for CNC roll grinding machine with grinding box as described in claim 1, characterized in that, The cylinder assembly (2) includes a cylinder barrel (21) and a rear cover (22). The rear cover (22) is fixedly installed at the bottom of the housing (1). The cylinder barrel (21) is fixedly installed at the top of the rear cover (22), and the cylinder barrel (21) and the rear cover (22) are connected in a through connection. The top of the cylinder barrel (21) is connected in a through connection to a front cover (23). The inner wall of the cylinder barrel (21) is slidably sealed with a piston (25). The top of the piston (25) is fixedly installed with a rod (24), and the rod (24) is slidably connected to the front cover (23). The middle part of the bottom end of the end face (3) is fixedly connected to the top of the rod (24).
4. The unloading support device for CNC roll grinding machine with grinding box as described in claim 1, characterized in that, The limiting block (43) is fixedly provided with two symmetrically distributed insertion rods (44) on the side near the connecting seat (42), and the insertion rods (44) penetrate the connecting seat (42). The outer wall of the insertion rods (44) is fitted with a reset spring (45), and the two ends of the reset spring (45) are fixedly connected to the limiting block (43) and the connecting seat (42) respectively.
5. The unloading support device for CNC roll grinding machine with grinding box as described in claim 1, characterized in that, The top of the built-in plate (7) is fixedly provided with two symmetrically distributed guide rods (47), and an electric cylinder (410) is fixedly provided between the two guide rods (47). A lifting plate (48) is slidably sleeved on the outer wall of the guide rods (47), and the lifting plate (48) is fixedly connected to the driving end of the electric cylinder (410). Both ends of the lifting plate (48) are fixedly provided with protrusions (49) that cooperate with the limiting block (43).
6. The unloading support device for CNC roll grinding machine with grinding box as described in claim 2, characterized in that, The sliding frame (54) has two symmetrically distributed sliders (56) that slide in. The middle of both sides of the two sliders (56) is fixedly provided with a fixed shaft, and two connecting rods (57) are rotatably provided on the outer wall of the fixed shaft. The other end of the two connecting rods (57) is rotatably connected to the corresponding base (51) and top seat (52).
7. The unloading support device for CNC roll grinding machine with grinding box as described in claim 3, characterized in that, The front cover (23) is provided with a rod seal (26) that works in conjunction with the rod body (24), and a buffer pad (27) is fixedly provided at the top of the front cover (23).
8. The unloading support device for CNC roll grinding machine with grinding box as described in claim 1, characterized in that, The outer wall of the protective rod (41) is provided with a limiting frame (46), and the limiting frame (46) is fixedly connected to the shell (1).