Cylinder head valve grinding device

Abstract

The present invention relates to the technical field of grinding equipment, and specifically to a cylinder head valve grinding device, comprising a bottom frame, two angle plates are fixedly connected to the bottom frame, a plurality of support rings are arranged above the placement plate, and two movable frames are arranged below each support ring, a driving part for driving the movable frame to move along the length direction of the bottom frame is arranged on the angle plate, a screw rod penetrating the support ring is fixedly connected to the movable frame, and a nut for limiting and fixing the support ring is threadedly connected to the screw rod. The present invention can change the position of all pneumatic valve grinders at once, which is convenient for grinding multiple cylinder head valves at the same time, and the upward movement of the lower disc can simultaneously push multiple holding parts to limit and fix all nylon valve seats in the cross groove, avoiding the single fixed nylon valve seat, saving operation time, and providing convenience for subsequent grinding of cylinder head valves.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, and in particular to a cylinder head valve grinding device. Background Art

[0002] Grinding the sealing surfaces of the cylinder head intake and exhaust valves and valve seats of a ship's four-stroke diesel engine will generate a lot of manpower and time. In the past, the operation was completed by pure manual grinding. With the continuous improvement of cylinder head technology, the number of intake and exhaust valves on the cylinder head is also increasing. If each intake and exhaust valve is ground one by one, this grinding method is not only inefficient but also labor-intensive.

[0003] For example, the Chinese patent publication number CN221364182U discloses a cylinder head valve grinding machine. Although the grinding device can grind multiple valves at the same time, improve the grinding speed, and save the time of tooling replacement, the applicant found that the position of the grinding machine is fixed, and the positions of all the grinding machines cannot be changed at the same time, so that only a certain type of cylinder head valve can be ground. Moreover, when only one valve needs to be ground, the height of the remaining grinding machines cannot be changed or the remaining grinding machines cannot be removed, which affects the normal grinding. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a cylinder head valve grinding device to solve the problem that the existing grinding device cannot change the positions of multiple grinders at the same time, and after the position of the grinder is changed, multiple grinders cannot be fixed at the same time, resulting in additional operating steps when grinding multiple cylinder head valves.

[0005] Based on the above purpose, the present invention provides a cylinder head valve grinding device, comprising a bottom frame, two angle plates are fixedly connected to the bottom frame, and the opposite sides of the two angle plates are fixedly connected to a placement plate for placing the cylinder head, a plurality of support rings are arranged above the placement plate, and two moving frames are arranged below each support ring, a driving part for driving the moving frame to move along the length direction of the bottom frame is arranged on the angle plate, a screw rod penetrating the support ring is fixedly connected to the moving frame, and a nut for limiting and fixing the support ring is threadedly connected to the screw rod; An upper disc is rotatably connected in the support ring, a rotating part for driving the upper disc to rotate is provided on the support ring, a lower disc is provided at the bottom of the upper disc, a cross groove is provided on both the upper disc and the lower disc, a nylon valve seat is slidably provided in the cross groove, a pneumatic valve grinder for grinding the cylinder head valve is inserted in the nylon valve seat, a placement groove is provided in the cross groove, a plurality of clamping parts are provided in the placement groove, and when the lower disc moves upward, the clamping parts can be driven to limit and fix all the nylon valve seats in the cross groove at the same time.

[0006] Preferably, the driving part includes a toothed plate fixedly connected to the angle plate, a driving machine is installed on the inner side of the movable frame, an output end of the driving machine is fixedly connected to a gear meshing with the toothed plate, a T-slot is provided on the angle plate, and a T-block adapted to the T-slot is fixedly connected to the movable frame.

[0007] Preferably, the outer fixed sleeve of the upper disc is provided with a worm gear ring, the support ring is provided with an annular groove for accommodating the worm gear ring, the support ring is fixedly connected to a housing, and a worm meshing with the worm gear ring is rotatably connected in the housing.

[0008] Preferably, the clamping portion includes a wedge plate 1 and a wedge plate 2 placed in the placement groove, and the wedge plate 1 and the wedge plate 2 are adapted to each other, the bottom end of the wedge plate 2 passes through the upper disc, and a plurality of springs 1 are arranged in the placement groove, one end of the spring is connected to the wedge plate 1, and the other end is connected to the inner wall of the placement groove, the wedge plate 1 can move horizontally in the placement groove, and the wedge plate 2 can move vertically in the placement groove, and when the wedge plate 2 moves upward, it can overcome the elastic force of the spring 1 and push the wedge plate 1 into the cross groove to achieve clamping of the nylon valve seat.

[0009] Preferably, a rubber pad is fixedly connected to one side of the wedge plate close to the cross groove.

[0010] Preferably, a limit rod penetrating the lower disc is fixedly connected to the bottom of the upper disc, and a spring 2 for pushing the lower disc downward is sleeved on the limit rod. An electric push rod is installed at the bottom of the support ring, and the output end of the electric push rod can push the lower disc upward.

[0011] Preferably, sponge strips are bonded in the cross grooves on the upper disc and the lower disc.

[0012] Preferably, an air pipe is installed on the bottom frame, and a plurality of pneumatic timing valves are installed on the air pipe, and the pneumatic timing valves are connected to the pneumatic valve grinder via an external hose.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The driving unit drives the moving frame to move along the length direction of the bottom frame, driving the support ring, the upper disc and the lower disc to move together, so that the position of the pneumatic valve grinder can be changed simply and quickly, which is convenient for grinding the cylinder head valve on the placement plate, avoiding manual back and forth movement and improving the grinding efficiency.

[0015] 2. The nylon valve seat can move in the cross groove, which can preliminarily change the position of the pneumatic valve grinder. Cooperating with the rotating part to drive the disc to rotate circumferentially, the positions of all pneumatic valve grinders can be changed at one time, which is convenient for grinding multiple cylinder head valves at the same time, avoiding the need to change the position of the valve grinder back and forth, and improving the operating efficiency.

[0016] 3. The upward movement of the lower disc can simultaneously push multiple supporting parts to limit and fix all nylon valve seats in the cross groove, avoiding the need to fix a single nylon valve seat, saving operation time, and providing convenience for subsequent polishing of the cylinder head valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] FIG1 is a schematic structural diagram of an embodiment of the present invention;

[0019] FIG2 is a partial cross-sectional view of an embodiment of the present invention;

[0020] FIG3 is a schematic diagram of the structure of the upper disc, the worm wheel ring and the lower disc according to an embodiment of the present invention;

[0021] FIG4 is a schematic structural diagram of a clamping portion according to an embodiment of the present invention;

[0022] FIG5 is a schematic diagram of the structure of a driving unit according to an embodiment of the present invention;

[0023] FIG6 is a schematic diagram of the structure of a driving machine and a moving frame according to an embodiment of the present invention;

[0024] FIG7 is a schematic structural diagram of a wedge plate 1 and a wedge plate 2 according to an embodiment of the present invention;

[0025] FIG. 8 is a schematic diagram of the structure of the upper disc, the lower disc and the sponge strip according to an embodiment of the present invention.

[0026] In the figure: 1. bottom frame; 2. angle plate; 3. placement plate; 4. support ring; 5. moving frame; 6. screw; 7. nut; 8. upper disc; 9. nylon valve seat; 10. pneumatic valve grinder; 11. lower disc; 12. tooth plate; 13. driver; 14. gear; 15. T-block; 16. worm wheel; 17. housing; 18. worm; 19. wedge plate 1; 20. wedge plate 2; 21. spring 1; 22. spring 2; 23. electric push rod; 24. sponge strip; 25. air pipe; 26. pneumatic timing valve; 27. limit rod; 28. rubber pad. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0028] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connecting" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] As shown in Figures 1, 2, 3, 4, 5, 6, 7 and 8, a cylinder head valve grinding device comprises a bottom frame 1, two angle plates 2 are fixedly connected to the bottom frame 1, and opposite sides of the two angle plates 2 are fixedly connected with a placement plate 3 for placing the cylinder head, a plurality of support rings 4 are arranged above the placement plate 3, and two moving frames 5 are arranged below each support ring 4, a driving part for driving the moving frame 5 to move along the length direction of the bottom frame 1 is arranged on the angle plate 2, a screw rod 6 penetrating the support ring 4 is fixedly connected to the moving frame 5, a nut 7 for limiting and fixing the support ring 4 is threadedly connected to the screw rod 6, and the number of nuts 7 on the screw rod 6 is two, one is located above the support ring 4, and the other is located below the support ring 4, and the height of the support ring 4 can be changed by rotating the nut 7; An upper disc 8 is rotatably connected inside the support ring 4, and a rotating part for driving the upper disc 8 to rotate is provided on the support ring 4. A lower disc 11 is provided at the bottom of the upper disc 8, and sponge strips 24 are bonded in the cross grooves on the upper disc 8 and the lower disc 11. Through the provision of the sponge strip 24, the nylon valve seat 9 can be preliminarily fixed. A cross groove is provided on the upper disc 8 and the lower disc 11, and a nylon valve seat 9 is slidably provided in the cross groove. A pneumatic valve grinder 10 for grinding the cylinder head valve is inserted into the nylon valve seat 9, and a placement groove is provided in the cross groove, and a plurality of clamping parts are provided in the placement groove. When the lower disc 11 moves upward, the clamping parts can be driven to simultaneously limit and fix all the nylon valve seats 9 in the cross groove.

[0030] When it is necessary to grind the cylinder head intake and exhaust valves, the cylinder head is placed on the placement plate 3, and then the driving unit drives the moving frame 5 to move, thereby driving the upper disc 8 and the lower disc 11 to move, and stop when they move to just above the cylinder head valve, and then the pneumatic valve grinder 10 is inserted into the nylon valve seat 9, and the nylon valve seat 9 moves in the cross groove to preliminarily change the position of the pneumatic valve grinder 10, and then the upper disc 8 can be driven to rotate by the rotating unit to change the positions of all nylon valve seats 9 at the same time. After the position change of the pneumatic valve grinder 10 is completed, the lower disc 11 moves up so that multiple clamping parts can fix all the nylon valve seats 9 at the same time, avoiding the nylon valve seats 9 from being offset and affecting the grinding efficiency when the pneumatic valve grinder 10 is working. Rotating the nut 7 can change the height of the pneumatic valve grinder 10, so that the suction cup on the pneumatic valve grinder 10 sucks the valve stem and applies grinding sand to the edge of the valve. Then, the pneumatic valve grinder can be started to grind the cylinder head valve.

[0031] In a preferred embodiment of the present invention, the driving part includes a tooth plate 12 fixedly connected to the angle plate 2, a driving machine 13 is installed on the inner side of the moving frame 5, an output end of the driving machine 13 is fixedly connected to a gear 14 meshing with the tooth plate 12, a T-slot is opened on the angle plate 2, and a T-block 15 adapted to the T-slot is fixedly connected to the moving frame 5.

[0032] The driving motor 13 drives the gear 14 to rotate. Since the gear 14 is meshed with the toothed plate 12 and the T-block 15 limits the movement trajectory of the movable frame 5, when the gear 14 rotates on the toothed plate 12, it can drive the movable frame 5 to move, thereby driving the support ring 4 to move, and then the position of the pneumatic valve grinder 10 can be changed.

[0033] In another preferred embodiment of the present invention, a worm gear 16 is provided on the outer fixed sleeve of the upper disc 8, the worm gear 16 has a through hole in the middle of the worm wheel, an annular groove for accommodating the worm gear 16 is provided in the support ring 4, a housing 17 is fixedly connected to the support ring 4, and a worm 18 meshing with the worm gear 16 is rotatably connected in the housing 17.

[0034] When it is necessary to drive the upper disc 8 to rotate, the worm 18 is rotated. Since the worm 18 is meshed with the worm wheel 16, the worm wheel 16 can be driven to rotate, thereby driving the upper disc 8 to rotate. Therefore, the rotation of the upper disc 8 can simultaneously change the positions of all the pneumatic valve grinders 10 located in the cross groove, making it convenient to grind multiple cylinder head valves at one time.

[0035] In another preferred embodiment of the present invention, the clamping portion includes a wedge plate 19 and a wedge plate 20 placed in the placement groove, and the wedge plate 19 and the wedge plate 20 are adapted to each other, the bottom end of the wedge plate 20 passes through the upper disc 8, and a plurality of springs 21 are arranged in the placement groove, one end of the spring 21 is connected to the wedge plate 19, and the other end is connected to the inner wall of the placement groove, the wedge plate 19 can move horizontally in the placement groove, and the wedge plate 20 can move vertically in the placement groove, and when the wedge plate 20 moves upward, it can overcome the elastic force of the spring 21 to push the wedge plate 19 into the cross groove, so as to clamp the nylon valve seat 9.

[0036] The upward movement of the lower disc 11 can push the wedge plate 20 to move upward, and because the inclined surface on the wedge plate 20 is adapted to the inclined surface on the wedge plate 19, when the wedge plate 20 moves upward, it will overcome the elastic force of the spring 1 21 to push the wedge plate 19 into the cross groove, so that with the cooperation of the wedge plate 19, all the nylon valve seats 9 can be limited and fixed. When the position of the nylon valve seat 9 needs to be changed, the lower disc 11 is moved downward. Under the action of the deadweight of the wedge plate 20, the downward movement of the wedge plate 20 releases the push on the wedge plate 19. At the same time, under the action of the elastic force of the spring 1 21, the wedge plate 19 will be pushed to shrink into the placement groove, thereby releasing the limit fixation of the nylon valve seat 9.

[0037] It should be noted that a rubber pad 28 is fixedly connected to one side of the wedge plate 19 close to the cross groove, and when the wedge plate 19 clamps the nylon valve seat 9, the rubber pad 28 plays a buffering role.

[0038] It should be noted that a limit rod 27 penetrating the lower disc 11 is fixedly connected to the bottom of the upper disc 8, and a spring 22 for pushing the lower disc 11 downward is sleeved on the limit rod 27. An electric push rod 23 is installed at the bottom of the support ring 4, and the output end of the electric push rod 23 can push the lower disc 11 upward.

[0039] By setting the limit rod 27, when the upper disc 8 rotates, the lower disc 11 will be driven to rotate together. When the lower disc 11 needs to move up to push the wedge plate 2 up, the electric push rod is started, and the upward movement of the output end of the electric push rod will overcome the elastic force of the spring 22 to push the lower disc up. The output end of the electric push rod contracts and pushes the lower disc to the initial position under the push of the elastic force of the spring 22.

[0040] It should be noted that an air pipe 25 is installed on the bottom frame 1, and a plurality of pneumatic timing valves 26 are installed on the air pipe 25. The pneumatic timing valves 26 are connected to the pneumatic valve grinder 10 through an external hose. The pneumatic timing valves 26 can set the grinding time to avoid over-grinding.

[0041] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0042] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cylinder head valve grinding device, comprising a bottom frame (1), two angle plates (2) being fixedly connected to the bottom frame (1), and a placement plate (3) for placing the cylinder head being fixedly connected to opposite sides of the two angle plates (2), characterized in that: A plurality of support rings (4) are arranged above the placement plate (3), and two movable frames (5) are arranged below each support ring (4); a driving portion for driving the movable frame (5) to move along the length direction of the bottom frame (1) is arranged on the angle plate (2); a screw rod (6) penetrating the support ring (4) is fixedly connected to the movable frame (5); a nut (7) for limiting and fixing the support ring (4) is threadedly connected to the screw rod (6); an upper disc (8) is rotatably connected inside the support ring (4); a nut (7) for driving the upper disc (8) is arranged on the support ring (4); The disc (8) is a rotating part, wherein a lower disc (11) is arranged at the bottom of the upper disc (8), and a cross groove is provided on both the upper disc (8) and the lower disc (11), a nylon valve seat (9) is slidably provided in the cross groove, a pneumatic valve grinder (10) for grinding the cylinder head valve is inserted in the nylon valve seat (9), a placement groove is provided in the cross groove, and a plurality of clamping parts are arranged in the placement groove, and when the lower disc (11) moves upward, the clamping parts can be driven to limit and fix all the nylon valve seats (9) in the cross groove at the same time.

2. A cylinder head valve grinding device according to claim 1, characterized in that: The driving part comprises a toothed plate (12) fixedly connected to the angle plate (2); a driving machine (13) is installed on the inner side of the moving frame (5); an output end of the driving machine (13) is fixedly connected to a gear (14) meshing with the toothed plate (12); a T-shaped slot is provided on the angle plate (2); and a T-shaped block (15) adapted to the T-shaped slot is fixedly connected to the moving frame (5).

3. A cylinder head valve grinding device according to claim 1, characterized in that: A worm wheel (16) is provided on the outer fixed sleeve of the upper disc (8), an annular groove for accommodating the worm wheel (16) is provided in the support ring (4), a housing (17) is fixedly connected to the support ring (4), and a worm (18) meshing with the worm wheel (16) is rotatably connected in the housing (17).

4. A cylinder head valve grinding device according to claim 1, characterized in that: The clamping portion comprises a wedge plate 1 (19) and a wedge plate 2 (20) placed in the placement groove, and the wedge plate 1 (19) and the wedge plate 2 (20) are adapted to each other, the bottom end of the wedge plate 2 (20) passes through the upper disc (8), a plurality of springs 1 (21) are arranged in the placement groove, one end of the spring 1 (21) is connected to the wedge plate 1 (19), and the other end is connected to the inner wall of the placement groove, the wedge plate 1 (19) can move horizontally in the placement groove, and the wedge plate 2 (20) can move vertically in the placement groove, when the wedge plate 2 (20) moves upward, it can overcome the elastic force of the spring 1 (21) to push the wedge plate 1 (19) into the cross groove, so as to clamp the nylon valve seat (9).

5. A cylinder head valve grinding device according to claim 4, characterized in that: A rubber pad (28) is fixedly connected to one side of the wedge-shaped plate 1 (19) close to the cross groove.

6. A cylinder head valve grinding device according to claim 4, characterized in that: The bottom of the upper disc (8) is fixedly connected to a limit rod (27) that passes through the lower disc (11); a spring (22) is sleeved on the limit rod (27) for pushing the lower disc (11) downward; an electric push rod (23) is installed at the bottom of the support ring (4); the output end of the electric push rod (23) is capable of pushing the lower disc (11) upward.

7. A cylinder head valve grinding device according to claim 1, characterized in that: Sponge strips (24) are bonded into the cross grooves on the upper disc (8) and the lower disc (11).

8. The cylinder head valve grinding device according to claim 1, characterized in that: An air pipe (25) is installed on the bottom frame (1), and a plurality of pneumatic timing valves (26) are installed on the air pipe (25), wherein the pneumatic timing valves (26) are connected to the pneumatic valve grinding machine (10) via an external hose.

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