Automatic cooling sectional type grinding machine for valve rod machining

Abstract

The invention discloses an automatic cooling sectional type grinding machine for valve rod machining, and belongs to the technical field of valve rod grinding machines, the automatic cooling sectional type grinding machine comprises a supporting seat, a cooling spraying mechanism and a sectional adjusting mechanism, a limiting rod movably penetrates through the lower middle portion of the supporting seat, a lead screw penetrates through the upper middle portion of the supporting seat in a threaded mode, and a water tank is installed at the upper end of the supporting seat; a water inlet hole and a sealing cover are arranged on the water tank and used for adding water into the water tank and sealing the water tank respectively, supporting pipes are installed at the inner top end and the inner bottom end of the supporting seat, the opening ends of the supporting pipes are movably connected with one end of a supporting frame, and a vertical shaft frame is arranged at the other end of the supporting frame. According to the valve rod polishing device, external facilities are not needed, in the valve rod polishing process, water is automatically sucked in the valve rod polishing device and sprayed to the polishing position, high temperature of the polishing position is avoided, the position of the polishing wheel can be automatically adjusted until a boss is polished, and therefore sectional type polishing can be automatically conducted.

Description

Technical Field

[0001] The invention relates to the technical field of valve stem grinders, in particular to an automatic cooling sectional grinder for valve stem processing. Background Art

[0002] The valve stem is an important part of the valve and is widely used in many industrial fields such as petroleum, chemical industry, electric power, metallurgy, etc. The valve controls the on-off and flow regulation of the fluid through the movement of the valve stem. Its performance directly affects the operating stability and safety of the entire system. The valve stem grinder is a device specially used for grinding valve stems, which can improve the accuracy of the valve stem and thus improve its performance; The existing valve stem grinding machine still has the following technical problems when in use, such as: 1. The existing valve stem grinder cannot automatically cool down the grinding area when in use. It needs an external water pump connected to the water pipe, which requires additional facilities for cooling. When grinding the valve stem, if the grinding position is not cooled, it will cause local high temperature, which will affect the strength of the valve stem and thus affect the performance of the valve stem; 2. When using the existing valve stem grinder, the valve stem needs to be grinded in sections. This is because the valve stem is provided with a boss. When grinding, the boss needs to be avoided. The existing segmentation method is to manually adjust the position of the grinding wheel when grinding to the boss, so that the grinding wheel passes over the position of the boss, or use a support wheel structure with inclined surfaces on both sides, so that the boss touches the inclined surface and the position of the grinding wheel is gradually adjusted. However, in this way, the support wheel structure is either provided with a rubber pad or not. When the rubber pad is provided, the boss can be avoided from being worn, but it will cause the support wheel structure to roll unsmoothly, thereby affecting the performance of the support wheel. When the rubber pad is not provided, the support wheel will cause the boss to be worn, thereby affecting the performance of the valve stem. Therefore, a segmented grinding machine with automatic cooling for valve stem processing is needed to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a segmented grinding machine with automatic cooling for valve stem processing, so as to solve the problem mentioned in the above background technology that the existing valve stem grinding machine cannot automatically cool down and cannot automatically perform segmented grinding.

[0004] To achieve the above object, the present invention provides the following technical solutions: A sectional grinding machine with automatic cooling for valve stem processing comprises a support seat, a cooling spraying mechanism and a sectional adjustment mechanism, wherein a limit rod is movably penetrated through the middle and lower part of the support seat, and a screw rod is threadedly penetrated through the middle and upper part of the support seat, a water tank is installed at the upper end of the support seat, a water inlet hole and a sealing cover are provided on the water tank, which are respectively used to add water to the water tank and seal the water tank, a support pipe is installed at the inner top and inner bottom ends of the support seat, and the open end of the support pipe is movably connected to one end of the support frame, a vertical shaft frame is provided at the other end of the support frame, and a grinding wheel and a supporting wheel are respectively connected to bearings on the upper and lower vertical shaft frames, the upper vertical shaft frame is connected to the water tank through the cooling spraying mechanism, and the grinding wheel installed in the upper vertical shaft frame is connected to the servo motor through a belt drive group, and the servo motor is installed in the upper support frame, and the sides of the two vertical shaft frames are connected with L-shaped support plates, and the support plates are connected to the support seat through the sectional adjustment mechanism.

[0005] Preferably, the cooling spray mechanism includes a thin tube, a one-way air inlet, a penetrating rod, a spring, a spray hole, an inner cavity, an extrusion block, an air cavity, a one-way exhaust hole, a piston disk and a thick tube. An inner cavity is provided in the middle of the upper vertical shaft frame, and a spray hole penetrating to the lower surface of the upper vertical shaft frame is provided in the inner cavity. The spray hole is provided above the grinding wheel. An air cavity is provided inside one side of the upper vertical shaft frame, and the air cavity penetrates to the front and rear sides of the upper vertical shaft frame respectively through the one-way air inlet and the one-way exhaust hole. A piston disk is seamlessly slidably connected, and a through rod is coaxially fixed on the piston disk, and the two ends of the through rod respectively seamlessly slide through the inner and outer sides of the upper vertical axis frame, and a spring movably nested in the outer side of the through rod is provided between the outer end of the through rod and the outer side surface of the upper vertical axis frame, an extrusion block is installed on the side of the grinding wheel facing the inner end of the through rod, and the extrusion block is correspondingly arranged to the inner end of the through rod, the one-way exhaust hole is connected to the water tank through a thin tube, and the inner cavity is connected to the water tank through a thick tube.

[0006] Preferably, the outer side surface of the extrusion block is a curved surface, and the distance between the curved surface and the side surface of the grinding wheel increases step by step, and the inner end of the penetrating rod is located on the rotation path of the extrusion block.

[0007] Preferably, the inner diameter of the thick tube is not less than 5 times the inner diameter of the thin tube, and the end position where the thin tube is connected to the water tank is higher than the end position where the thick tube is connected to the water tank.

[0008] Preferably, the through rod has a T-shaped structure, and a smooth hemispherical structure is provided at its inner end.

[0009] Preferably, the segmented adjustment mechanism includes a guide roller, a screw, an adjustment disk, a second spring, a horizontal shaft frame, a connecting rod, a connecting tube, an axle tube, an adjustment rod, a rocker, an inclined groove and a circular plate, the inclined groove is arranged on the support plate, and the two inclined grooves are connected by the circular plate, the middle thread of the circular plate is penetrated by the axle tube, and the horizontal shaft frame is connected to the horizontal shaft frame by a bearing at one end of the axle tube, a guide roller is installed on the horizontal shaft frame, and the horizontal shaft frame is connected to the circular plate by two groups of connecting rods and connecting tubes, the connecting rods and the connecting tubes are movably nested and connected, and The connecting rod and the connecting tube are respectively connected to the horizontal shaft frame and the circular plate, and the two groups of connecting rods and connecting tubes are symmetrically arranged about the axis of the shaft tube. One end of the adjusting rod is movably connected to the inner side of the other end of the shaft tube, and the adjusting rod bearing passes through the support seat, and a rocker is installed on the other end of the adjusting rod. A screw rod is movably passed through the support plate, and the two screw rods are respectively fixedly connected to the inner top end and inner bottom end of the support seat, an adjusting disk is threadedly connected to the screw rod, and a spring 2 nested in the outer side of the screw rod is arranged between the adjusting disk and the corresponding support plate.

[0010] Preferably, the inclined grooves on the two support plates are symmetrical about the axis of the shaft tube.

[0011] Preferably, the end of the adjusting rod extending into the shaft tube and the inner side of the shaft tube are prismatic structures that match each other.

[0012] Preferably, the axis of the guide roller and the axis of the support wheel are arranged vertically in different planes, and the axis of the support wheel and the axis of the grinding wheel are arranged parallel to each other, the grinding wheel and the support wheel have the same width, and the diameter of the guide roller and the width of the grinding wheel are the same.

[0013] Preferably, the structural shape of the support seat is C-shaped, and the horizontal axis plane of the support seat is coplanar with the horizontal axis plane of the horizontal axis frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the automatic cooling segmented grinding machine for valve stem processing does not require external facilities, and in the process of grinding the valve stem, the internal part thereof automatically absorbs water and sprays it on the grinding position to avoid high temperature at the grinding position, and can automatically adjust the position of the grinding wheel when grinding to the boss, so that segmented grinding can be automatically performed: 1. When the grinding wheel rotates, it will drive the extrusion block to rotate, and cooperate with the spring to make the penetrating rod move back and forth, thereby driving the piston disc to move back and forth. During the reciprocating movement of the piston disc, the external gas will be continuously input into the capillary through the one-way air inlet and the one-way exhaust hole. Then the gas enters the water tank through the capillary, thereby increasing the pressure in the water tank, so that the water in the water tank enters the inner cavity through the thick tube, and then sprays to the grinding wheel through the spray hole, so that the grinding position of the grinding wheel can be sprayed with water to cool down, avoiding external facilities, and achieving the purpose of automatic cooling of the grinding position of the valve stem grinder; 2. When the grinding wheel encounters the boss on the valve stem, the guide roller will also contact the boss, causing the guide roller to move backward, causing the circular plate to move backward, thereby causing the two support plates to drive the two vertical shaft frames away from each other through the inclined groove, so that the grinding wheel can pass over the boss for segmented grinding; 3. By adjusting the disk and the rocker, the distance between the grinding wheel and the supporting wheel and the position of the guide roller can be adjusted, so that the valve stem grinder can grind valve stems of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure of point A; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of point B in the middle; Figure 5 For the present invention Figure 3 The schematic diagram of the enlarged structure of point C in the middle; Figure 6 It is a schematic diagram of a partial cross-sectional structure of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram of point D in the middle; Figure 8 It is a schematic diagram of the local structure of the present invention; Fig. 9 For the present invention Figure 8 The enlarged structural diagram of point E in the middle; Fig.10 It is a schematic diagram of the connection structure between the servo motor and the grinding wheel of the present invention.

[0016] In the figure: 1. support seat; 2. limit rod; 3. screw rod; 4. water tank; 5. capillary tube; 6. support tube; 7. support frame; 8. vertical shaft frame; 9. support plate; 10. one-way air inlet hole; 11. through rod; 12. spring one; 13. guide roller; 14. support wheel; 15. screw rod; 16. adjustment disk; 17. spring two; 18. servo motor; 19. spray hole; 20. inner cavity; 21. grinding wheel; 22. horizontal shaft frame; 23. connecting rod; 24. connecting tube; 25. shaft tube; 26. adjustment rod; 27. rocker; 28. inclined groove; 29. ​​circular plate; 30. extrusion block; 31. air cavity; 32. one-way exhaust hole; 33. piston disk; 34. thick tube; 35. belt drive group. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 10 , the present invention provides the following technical solutions: Embodiment 1:

[0019] In order to solve the problem that the valve stem processing and grinding machine cannot cool down during the grinding process, which easily affects the local strength of the valve stem, the following technical solutions are provided, specifically, A segmented grinding machine with automatic cooling for valve stem processing comprises a support seat 1, a cooling spraying mechanism and a segmented adjustment mechanism, a limit rod 2 is movably penetrated through the middle and lower part of the support seat 1, and a screw rod 3 is threadedly penetrated through the middle and upper part of the support seat 1, a water tank 4 is installed at the upper end of the support seat 1, and a water inlet hole and a sealing cover are provided on the water tank 4, which are respectively used to add water to the water tank 4 and seal the water tank 4, a support tube 6 is installed at the inner top and inner bottom ends of the support seat 1, and the open end of the support tube 6 is movably connected to one end of a support frame 7, a vertical shaft frame 8 is provided at the other end of the support frame 7, and a grinding wheel 21 and a support wheel 14 are respectively connected to the upper and lower vertical shaft frames 8 by bearings, the upper vertical shaft frame 8 is connected to the water tank 4 by a cooling spraying mechanism, and the grinding wheel 21 installed in the upper vertical shaft frame 8 is connected to the servo motor 18 through a belt drive group 35, and the servo motor 18 is installed in the upper support frame 7.

[0020] The cooling spray mechanism includes a thin tube 5, a one-way air inlet 10, a penetrating rod 11, a spring 12, a spray hole 19, an inner cavity 20, an extrusion block 30, an air cavity 31, a one-way exhaust hole 32, a piston disc 33 and a thick tube 34. The middle part of the upper vertical shaft frame 8 is provided with an inner cavity 20, and the inner cavity 20 is provided with a spray hole 19 penetrating to the lower surface of the upper vertical shaft frame 8. The spray hole 19 is arranged above the grinding wheel 21. An air cavity 31 is arranged inside one side of the upper vertical shaft frame 8, and the air cavity 31 penetrates to the front and rear sides of the upper vertical shaft frame 8 respectively through the one-way air inlet 10 and the one-way exhaust hole 32, and the piston disc 33 is seamlessly slidably connected in the air cavity 31. 3, and a through rod 11 is coaxially fixed on the piston disc 33, and the two ends of the through rod 11 are seamlessly slid through the inner and outer sides of the upper vertical shaft frame 8, and a spring 12 movably nested in the outer side of the through rod 11 is arranged between the outer end of the through rod 11 and the outer side of the upper vertical shaft frame 8, and a squeezing block 30 is installed on the side of the grinding wheel 21 facing the inner end of the through rod 11, and the squeezing block 30 is arranged corresponding to the inner end of the through rod 11, the one-way exhaust hole 32 is connected to the water tank 4 through the thin tube 5, and the inner cavity 20 is connected to the water tank 4 through the thick tube 34. When the squeezing block 30 rotates with the grinding wheel 21, the through rod 11 will be pressed. 11 is extruded, and the spring 12 connected between the through rod 11 and the upper vertical shaft frame 8 can make the through rod 11 move back and forth continuously. During the reciprocating movement of the through rod 11, the piston plate 33 connected thereto will move back and forth with it. The one-way air inlet hole 10 and the one-way exhaust hole 32 can make the gas absorbed in the air cavity 31 continuously be transported to the capillary 5, and the gas enters the closed water tank 4 through the capillary 5, which can increase the air pressure in the water tank 4, thereby making the water in the water tank 4 enter the inner cavity 20 through the thick tube 34, and then spray from the spray hole 19 to the grinding wheel 21, so as to achieve the effect of cooling the grinding position, and the outer side of the extrusion block 30 It is a curved surface, and the distance between the curved surface and the side of the grinding wheel 21 increases step by step, and the inner end of the through rod 11 is on the rotation path of the extrusion block 30, so that the extrusion block 30 can gradually and continuously extrude the through rod 11 during the rotation with the grinding wheel 21. The inner diameter of the thick tube 34 is not less than 5 times the inner diameter of the thin tube 5, and the end position of the thin tube 5 connected to the water tank 4 is higher than the position where the thick tube 34 is connected to the end of the water tank 4. The ratio of the inner diameter of the thick tube 34 to the inner diameter of the thick tube 34 can reduce the amount of water sprayed by the spray hole 19, which can save water. The structural shape of the through rod 11 is T-shaped, and a smooth hemispherical structure is provided at its inner end.

[0021] Embodiment 2:

[0022] In order to solve the problem that the boss or supporting components are easily worn during the segmented grinding process of the previous valve stem processing and grinding machine, the following technical solution is provided. Specifically, the sides of the two vertical shaft frames 8 are connected with L-shaped support plates 9, and the support plates 9 are connected to the support seat 1 through a segmented adjustment mechanism.

[0023] The segmented adjustment mechanism includes a guide roller 13, a screw rod 15, an adjustment disk 16, a spring 17, a horizontal shaft frame 22, a connecting rod 23, a connecting tube 24, an axle tube 25, an adjustment rod 26, a rocker 27, an inclined groove 28 and a circular plate 29. The inclined groove 28 is arranged on the support plate 9, and two inclined grooves 28 are connected by the circular plate 29. The middle thread of the circular plate 29 is penetrated by the axle tube 25, and one end of the axle tube 25 is connected to the horizontal shaft frame 22 by a bearing. The guide roller 13 is installed on the horizontal shaft frame 22, and the horizontal shaft frame 22 is connected to the circular plate 29 through two groups of connecting rods 23 and connecting tubes 24. The connecting rod 23 and the connecting tube 24 are movably nested and connected, and the connecting rod 23 and the connecting tube 24 are respectively connected to the horizontal shaft frame 22 and On the circular plate 29, two groups of connecting rods 23 and connecting tubes 24 are symmetrically arranged about the axis of the shaft tube 25, one end of the adjusting rod 26 is movably connected to the inner side of the other end of the shaft tube 25, and the adjusting rod 26 bearing is set through the support seat 1, and the other end of the adjusting rod 26 is installed with a rocker 27, a screw rod 15 is movably passed through the support plate 9, and two screw rods 15 are respectively fixedly connected to the inner top and inner bottom of the support seat 1, an adjusting disk 16 is threadedly connected to the screw rod 15, and a spring 17 nested on the outer side of the screw rod 15 is arranged between the adjusting disk 16 and the corresponding support plate 9, after the boss contacts the guide roller 13, the guide roller 13 will be squeezed, thereby moving in the direction of the circular plate 29, and the guide roller 13 moves in the direction of the circular plate 29 During the process, the circular plate 29 can be moved synchronously, and the guide roller 13 will gradually roll on the valve stem, and then the two support plates 9 will be moved away from each other through the two inclined grooves 28. When the two support plates 9 are moved away from each other, the two vertical shaft frames 8 will be moved away from each other synchronously, so that the grinding wheel 21 and the support wheel 14 can pass over the boss on the valve stem, so as to achieve the effect of segmented grinding of the valve stem. Since the grinding wheel 21 and the support wheel 14 are moved away from each other by the rolling of the guide roller 13, the problem of the boss being worn due to the compression contact between the boss and the support wheel 14 in the prior art and the grinding wheel 21 passing over the boss can be avoided, thereby avoiding the performance of the valve stem being damaged due to the wear of the boss. In addition, the position of the horizontal shaft frame 22 can be adjusted by rotating the rocker 27. By rotating the adjusting disk 16, the positions of the grinding wheel 21 and the supporting wheel 14 can be adjusted, thereby facilitating the valve stem grinder to grind valve stems of different types. The inclined grooves 28 on the two supporting plates 9 are symmetrical about the axis of the shaft tube 25. The end of the adjusting rod 26 extending into the shaft tube 25 and the structural shape of the inner side of the shaft tube 25 are mutually matching prismatic structures. The axis of the guide roller 13 and the axis of the supporting wheel 14 are arranged vertically in different planes, and the axis of the supporting wheel 14 and the axis of the grinding wheel 21 are arranged parallel to each other. The grinding wheel 21 and the support wheel 14 have the same width, and the diameter of the guide roller 13 and the width of the grinding wheel 21 are the same. The structural shape of the support seat 1 is C-shaped, and the horizontal axis plane of the support seat 1 is coplanar with the horizontal axis plane of the horizontal shaft frame 22.

[0024] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A segmented grinding machine with automatic cooling for valve stem processing, comprising a support seat (1), a cooling spraying mechanism and a segmented adjustment mechanism, characterized in that: The middle and lower part of the support seat (1) is movably penetrated by a limit rod (2), and the middle and upper part of the support seat (1) is threadedly penetrated by a screw rod (3), the upper end of the support seat (1) is installed with a water tank (4), and the water tank (4) is provided with a water inlet hole and a sealing cover, which are respectively used to add water to the water tank (4) and seal the water tank (4), the inner top and bottom ends of the support seat (1) are both installed with a support tube (6), and the open end of the support tube (6) is movably connected to one end of a support frame (7), and the other end of the support frame (7) is provided with a vertical shaft frame (8), and the upper and lower ends of the support tube (6) are respectively provided with a support tube (6). A grinding wheel (21) and a support wheel (14) are respectively connected to the vertical shaft frames (8) by bearings, the upper vertical shaft frame (8) is connected to the water tank (4) through a cooling spraying mechanism, and the grinding wheel (21) installed in the upper vertical shaft frame (8) is connected to the servo motor (18) through a belt transmission group (35), and the servo motor (18) is installed in the upper support frame (7), and the sides of the two vertical shaft frames (8) are connected to L-shaped support plates (9), and the support plates (9) are connected to the support seat (1) through a segmented adjustment mechanism.

2. The automatic cooling segmented grinding machine for valve stem processing according to claim 1, characterized in that: The cooling spray mechanism comprises a thin tube (5), a one-way air inlet (10), a penetrating rod (11), a spring (12), a spray hole (19), an inner cavity (20), an extrusion block (30), an air cavity (31), a one-way exhaust hole (32), a piston plate (33) and a thick tube (34). The inner cavity (20) is provided in the middle of the upper vertical shaft frame (8), and a spray hole (19) penetrating to the lower surface of the upper vertical shaft frame (8) is provided in the inner cavity (20). The spray hole (19) is provided above the grinding wheel (21). An air cavity (31) is provided inside one side of the upper vertical shaft frame (8), and the air cavity (31) penetrates to the front and rear sides of the upper vertical shaft frame (8) through the one-way air inlet (10) and the one-way exhaust hole (32). A piston disc (33) is seamlessly slidably connected in the air cavity (31), and a through rod (11) is coaxially fixed on the piston disc (33) and penetrates therethrough. The two ends of the through rod (11) respectively seamlessly slide through the inner and outer sides of the upper vertical shaft frame (8), and a spring (12) movably nested in the outer side of the through rod (11) is provided between the outer end of the through rod (11) and the outer side surface of the upper vertical shaft frame (8). An extrusion block (30) is installed on the side of the grinding wheel (21) facing the inner end of the through rod (11), and the extrusion block (30) is correspondingly arranged with the inner end of the through rod (11). The one-way exhaust hole (32) is connected to the water tank (4) through a thin tube (5), and the inner cavity (20) is connected to the water tank (4) through a thick tube (34).

3. The automatic cooling segmented grinding machine for valve stem processing according to claim 2, characterized in that: The outer side surface of the extrusion block (30) is a curved surface, and the distance between the curved surface and the side surface of the grinding wheel (21) increases step by step, and the inner end of the penetrating rod (11) is located on the rotation path of the extrusion block (30).

4. The automatic cooling segmented grinding machine for valve stem processing according to claim 3 is characterized in that: The inner diameter of the thick tube (34) is not less than 5 times the inner diameter of the thin tube (5), and the position of the end of the thin tube (5) connected to the water tank (4) is higher than the position of the end of the thick tube (34) connected to the water tank (4).

5. The automatic cooling segmented grinding machine for valve stem processing according to claim 4, characterized in that: The through rod (11) has a T-shaped structure, and a smooth hemispherical structure is provided at its inner end.

6. The automatic cooling segmented grinding machine for valve stem processing according to claim 5, characterized in that: The segmented adjustment mechanism comprises a guide roller (13), a screw rod (15), an adjustment disk (16), a second spring (17), a horizontal shaft frame (22), a connecting rod (23), a connecting tube (24), an axle tube (25), an adjustment rod (26), a rocker (27), an inclined groove (28) and a circular plate (29), wherein the inclined groove (28) is arranged on the support plate (9), and two inclined grooves (28) are connected by the circular plate (29), a middle thread of the circular plate (29) is penetrated by the axle tube (25), and one end of the axle tube (25) is connected to the horizontal shaft frame (22) by a bearing, the guide roller (13) is installed on the horizontal shaft frame (22), and the horizontal shaft frame (22) is connected to the circular plate (29) by two groups of connecting rods (23) and a connecting tube (24), and the connecting rod (23) and the connecting tube (24) are connected to the circular plate (29). The two connecting rods (23) and the connecting tube (24) are movably nested and connected, and the connecting rod (23) and the connecting tube (24) are respectively connected to the horizontal shaft frame (22) and the circular plate (29), and the two groups of connecting rods (23) and the connecting tube (24) are symmetrically arranged about the axis of the shaft tube (25), and one end of the adjusting rod (26) is movably connected to the inner side of the other end of the shaft tube (25), and the bearing of the adjusting rod (26) passes through the support seat (1), and the other end of the adjusting rod (26) is installed with a rocker (27), and a screw rod (15) is movably passed through the support plate (9), and the two screw rods (15) are respectively fixedly connected to the inner top end and the inner bottom end of the support seat (1), and the screw rod (15) is threadedly connected to the adjusting disk (16), and a spring (17) nested on the outer side of the screw rod (15) is arranged between the adjusting disk (16) and the corresponding support plate (9).

7. The automatic cooling segmented grinding machine for valve stem processing according to claim 6, characterized in that: The inclined grooves (28) on the two support plates (9) are symmetrical about the axis of the shaft tube (25).

8. The automatic cooling segmented grinding machine for valve stem processing according to claim 7, characterized in that: The end of the adjusting rod (26) extending into the shaft tube (25) and the inner side of the shaft tube (25) have a prismatic structure that matches each other.

9. The automatic cooling segmented grinding machine for valve stem processing according to claim 8, characterized in that: The axis of the guide roller (13) and the axis of the support wheel (14) are arranged vertically in different planes, and the axis of the support wheel (14) and the axis of the grinding wheel (21) are arranged parallel to each other. The grinding wheel (21) and the support wheel (14) have the same width, and the diameter of the guide roller (13) and the width of the grinding wheel (21) are the same.

10. The automatic cooling segmented grinding machine for valve stem processing according to claim 9, characterized in that: The structural shape of the support seat (1) is C-shaped, and the horizontal axis plane of the support seat (1) is coplanar with the horizontal axis plane of the horizontal axis frame (22).

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