Hydraulic valve grooving mechanism

Abstract

The invention discloses a hydraulic valve grooving mechanism, and relates to the technical field of valve machining, the hydraulic valve grooving mechanism comprises a main shaft transmission system, a cutter feeding system and a main shaft feeding system, the main shaft feeding system comprises a sleeve piece, a rotary drum, a limiting plate and a driving unit, and the sleeve piece is internally provided with an annular cavity channel; a feeding pipeline, a feeding pipeline and a discharging pipeline are arranged on the circumferential side of the feeding pipe barrel in the radial direction, the feeding pipe barrel sequentially and coaxially communicates with a hollow spindle and a power chuck of the spindle transmission system, the rotating barrel can rotate in the annular cavity channel, and arc-shaped parts matched with the annular cavity channel are arranged on the two opposite sides of the rotating barrel correspondingly. The limiting plate is slidably connected to one end of the rotating cylinder in the axial direction of the rotating shaft and used for adjusting opening and closing of the end of the rotating cylinder, and the driving unit is used for driving the rotating cylinder to rotate so that the rotating cylinder can be coaxial with the feeding pipeline, the feeding pipeline and the discharging pipeline. Manual work can be liberated, the efficiency can be improved, meanwhile, the defect that mechanical arm configuration cost is high is overcome, cost is reduced, and the requirement for batch machining of valve sleeves is met.

Description

Technical Field

[0001] This invention relates to the field of cutting and machining technology, specifically to a hydraulic valve grooving mechanism. Background Technology

[0002] The valve sleeve is an important component of a hydraulic valve. The valve sleeve has a cylindrical structure, and its two ends need to be machined with annular grooves to meet the requirements of subsequent assembly and sealing. The machining efficiency and accuracy of the annular grooves have a significant impact on the production quality and large-scale production efficiency of hydraulic valves.

[0003] Currently, the existing technology for machining the annular grooves at both ends of the valve sleeve blank mainly uses manual labor or a robot arm in conjunction with a spindle power chuck to complete the operation. Specifically, the valve sleeve blank needs to be transferred to the spindle power chuck by manual labor or a robot arm for loading. After the power chuck clamps and fixes the valve sleeve blank, the annular groove is machined at one end of the valve sleeve through the tool feed system. After one end is machined, the power chuck needs to be released manually or by a robot arm to turn the valve sleeve around and re-clamp it, and then the groove is machined at the other end of the valve sleeve. After both ends are machined, the unloading operation is completed manually or by a robot arm.

[0004] The existing processing methods have shortcomings: When using manual operation, operators need to participate in all aspects of loading, unloading, and valve sleeve turning, which not only results in high labor intensity and labor costs, but also leads to low work efficiency due to differences in the proficiency of manual operation. At the same time, manual handling and turning can easily cause the valve sleeve blank to be bumped and misaligned, affecting the processing accuracy. When using robotic arms, although manual intervention can be reduced to a certain extent, the purchase cost, installation and commissioning cost, and subsequent maintenance cost of robotic arms are high, which restricts the large-scale and efficient development of hydraulic valve sleeve processing. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic valve grooving mechanism to solve the problems of low efficiency of manual loading and unloading during hydraulic valve grooving operations in the prior art, and high purchase, installation, commissioning and maintenance costs of loading and unloading robots.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic valve grooving mechanism, comprising a spindle transmission system, a tool feed system, and a spindle feeding system. The spindle feeding system comprises: a kit having an annular cavity, with a feed pipe, a feed tube, and a discharge pipe radially arranged on its periphery, the feed tube being coaxially connected to the hollow spindle of the spindle transmission system and the power chuck in sequence; a rotating drum with a rotating shaft fixedly connected radially in its middle, the rotating drum being rotatably connected to the kit via the rotating shaft to rotate within the annular cavity, and arc-shaped portions adapted to the annular cavity being provided on opposite sides of the rotating drum; a limiting plate slidably connected to one end of the rotating drum along the axial direction of the rotating shaft for adjusting the opening and closing of the end of the rotating drum; and a drive unit for driving the rotating drum to rotate so that the rotating drum can be coaxially aligned with the feed tube, feed tube, and discharge pipe respectively.

[0007] Furthermore, both the feeding pipe and the unloading pipe are arranged at an angle, with the lower angle of the feeding pipe connected to the kit and the upper angle of the unloading pipe connected to the kit.

[0008] Furthermore, the inclination angle between the feeding pipe and the unloading pipe is 20°-30°.

[0009] Furthermore, the limiting plate is driven by a linear drive component provided on the kit to achieve sliding.

[0010] Furthermore, the limiting plate includes a connected flat plate portion and a wedge-shaped end portion, with the side of the wedge-shaped end portion facing the outside of the channel of the rotating cylinder being an inclined surface; a guide rod coaxial with the rotating shaft is fixedly connected to the rotating cylinder, and a connecting rod is slidably connected to the guide rod; a first elastic element is provided between the guide rod and the connecting rod, exerting elastic force towards the rotating cylinder on the connecting rod; a slide rod fixedly connected to the limiting plate is slidably connected to the connecting rod, and a second elastic element is provided between the connecting rod and the slide rod, exerting elastic force away from the rotating cylinder on the slide rod; an arc-shaped arched guide is also fixedly connected to the kit, with the middle part of the arched guide arching towards the rotating cylinder, and the arched guide is located on the rotation path of the end of the slide rod away from the limiting plate.

[0011] Furthermore, the first elastic element is a first compression spring sleeved on the guide rod, with one end of the first compression spring abutting against the end of the guide rod away from the rotating cylinder, and the other end abutting against the connecting rod.

[0012] Furthermore, the second elastic element is a second compression spring sleeved on the slide rod, with one end of the second compression spring abutting against the end of the slide rod away from the limiting plate, and the other end abutting against the connecting rod.

[0013] Furthermore, a ball bearing is rotatably embedded on the end of the slide bar away from the limiting plate, and the ball bearing rolls in cooperation with the arched guide.

[0014] Compared with the prior art, the hydraulic valve grooving mechanism provided by the present invention achieves automated continuous operation of valve sleeve blank loading, turning and unloading through the coordinated cooperation of the main shaft feeding system kit, rotating drum, limiting plate and drive unit. It eliminates the need for manual or robotic arms to complete the loading, unloading and valve sleeve turning operations, effectively solving the problems of low efficiency and high labor intensity of manual operation, while avoiding the disadvantage of high configuration cost of robotic arms, significantly reducing the production and operation costs of enterprises, and adapting to the batch processing needs of valve sleeves. Attached Figure Description

[0015] To provide a clearer description of the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments will be briefly introduced below.

[0016] Figure 1 A schematic diagram of the overall structure provided for the embodiment; Figure 2 This is a schematic diagram of the connection structure between the spindle drive system and the spindle feeding system provided in the embodiment. Figure I ; Figure 3 This is a schematic diagram of the connection structure between the spindle drive system and the spindle feeding system provided in the embodiment. Figure II ; Figure 4 A top view of the connection structure between the spindle drive system and the spindle feeding system provided in the embodiment; Figure 5 A partial structural schematic diagram of the spindle drive system and spindle feeding system provided in the embodiment; Figure 6 A schematic diagram of the spindle feeding system provided in the embodiment; Figure 7 A partial structural diagram of the spindle feeding system provided in the embodiment. Figure I ; Figure 8 A partial structural diagram of the spindle feeding system provided in the embodiment. Figure II ; Figure 9 This is a schematic diagram of the structure of the rotary drum receiving and feeding pipe during the feeding process provided in the embodiment. Figure 10 This is a schematic diagram of the structure of the rotating drum feeding material into the feeding pipe, provided in an embodiment. Figure 11 This is a schematic diagram of the structure of the feeding pipe returning material to the rotary drum in the embodiment. Figure I ; Figure 12 This is a schematic diagram of the structure of the feeding pipe returning material to the rotary drum in the embodiment. Figure II ; Figure 13This is a schematic diagram of the structure of the rotary drum feeding material into the feeding pipe, provided in the embodiment. Figure I ; Figure 14 This is a schematic diagram of the structure of the rotary drum feeding material into the feeding pipe, provided in the embodiment. Figure II .

[0017] Explanation of reference numerals in the attached figures: 1. Spindle drive system; 11. Spindle housing; 12. Hollow spindle; 13. Spindle motor; 14. Power chuck; 2. Tool feed system; 21. Tool holder; 22. Tool; 23. Push rod; 3. Spindle feeding system; 30. Kit; 31. Feed pipe; 32. Feed pipe; 33. Discharge pipe; 34. Rotary drum; 341. Arc-shaped part; 35. Rotary shaft; 36. Guide rod; 37. Connecting rod; 38. Slide rod; 381. Ball bearing; 39. Limiting plate; 391. Flat plate part; 392. Wedge-shaped end; 310. First elastic element; 311. Second elastic element; 312. Bracket; 313. Arched guide; 314. Drive unit; 315. Connecting rod. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Please see Figures 1-14 The present invention provides a hydraulic valve grooving mechanism for grooving both ends of the valve sleeve of a hydraulic valve. It mainly includes a spindle transmission system 1, a tool feeding system 2, and a spindle feeding system 3.

[0020] The spindle drive system 1 mainly includes a spindle housing 11, a hollow spindle 12, a spindle motor 13, and a power chuck 14. The hollow spindle 12 is axially vertical and rotatably installed inside the spindle housing 11. The hollow spindle 12 has a hollow structure. The power chuck 14 is located at the bottom of the hollow spindle 12 and is used to clamp the valve sleeve that needs to be grooved. The spindle motor 13 is fixedly installed inside the spindle housing 11 and located on one side of the hollow spindle 12. The output shaft of the spindle motor 13 is connected to the hollow spindle 12 through a gear set, a belt assembly, or a chain assembly, so that the spindle motor 13 can drive the hollow spindle 12 and the power chuck 14 to rotate.

[0021] The tool feed system 2 mainly includes a tool holder 21, a tool 22 and a push rod 23. The tool 22 is detachably connected to the tool holder 21, and the push rod 23 is fixedly connected to the tool holder 21. The tool holder 21 has degrees of freedom of movement along the X-axis (horizontal direction) and the Y-axis (vertical direction), which is existing technology and will not be described in detail here.

[0022] The main spindle feeding system 3 mainly includes a kit 30, a rotating drum 34, a limiting plate 39, and a drive unit 314. The kit 30 has a ring-shaped structure and a ring-shaped cavity inside. The kit 30 has a feed pipe 31, a feed pipe 32, and a discharge pipe 33 arranged radially on its periphery. The kit 30 is fixedly connected to the main spindle housing 11 by a connecting rod 315. The feed pipe 31, feed pipe 32, and discharge pipe 33 are all connected to the ring-shaped cavity. The feed pipe 32 is located at the bottom of the kit 30 and is axially vertical. The feed pipe is coaxially connected to the hollow main spindle 12 and the power chuck 14 of the main spindle transmission system 1. From top to bottom, the components are the feed pipe 32, the hollow main spindle 12, and the power chuck 14. The feeding pipe 32 is a fixed structure, while the hollow main shaft 12 is a rotating structure. The two are either rotatably connected or non-contactly docked. The feeding pipe 31 is used to temporarily store valve sleeves awaiting grooving, and the unloading pipe 33 is used to discharge the finished valve sleeves. Both the feeding pipe 31 and the unloading pipe 33 are arranged at an angle. The lower angle of the feeding pipe 31 connects to the assembly 30, and the upper angle of the unloading pipe 33 connects to the assembly 30, allowing the valve sleeves to slide down within both the feeding pipe 31 and the unloading pipe 33 under gravity. The preferred angle between the feeding pipe 31 and the unloading pipe 33 is 20°-30°. This angle range ensures that the valve sleeves can slide down within the feeding pipe 31 and the unloading pipe 33 without excessively fast descent, preventing deformation from impact.

[0023] A rotating shaft 35 is fixedly connected radially to the center of the rotating drum 34. The rotating drum 34 is located in the annular cavity and is coaxially rotatably connected to the kit 30 through the rotating shaft 35. The rotating drum 34 can rotate in the annular cavity. Arc-shaped portions 341 adapted to the annular cavity are provided on opposite sides of the rotating drum 34. The drive unit 314 is provided on the main shaft housing 11 and is used to drive the rotating drum 34 to rotate so that the rotating drum 34 can be coaxially aligned with the feeding pipe 31, the feeding pipe 32 and the unloading pipe 33 respectively. The drive unit 314 is preferably a servo motor fixedly mounted on the main shaft housing 11. The output shaft of the servo motor is coaxially fixedly connected to the rotating shaft 35 of the rotating drum 34.

[0024] A limiting plate 39 is slidably connected to one end of a rotating cylinder 34 along the axial direction of a rotating shaft 35, and is used to adjust the opening and closing of the end of the rotating cylinder 34. The limiting plate 39 includes a connected flat plate portion 391 and a wedge-shaped end portion 392, the side of the wedge-shaped end portion 392 facing the outside of the channel of the rotating cylinder 34 being inclined. During its sliding stroke relative to the rotating cylinder 34, the limiting plate 39 has the following positions: a first position where only the wedge-shaped end portion 392 is located within the channel of the rotating cylinder 34; a second position where both the wedge-shaped end portion 392 and the flat plate portion 391 are located within the channel; and a third position where both the flat plate portion 391 and the wedge-shaped end portion 392 are exiting the channel.

[0025] There are two sources of driving force for the limiting plate 39 to slide on the rotating drum 34. In one embodiment, a guide rod 36 is fixedly connected to the side of the rotating drum 34 away from the rotating shaft 35. The guide rod 36 is coaxial with the rotating shaft 35. A connecting rod 37 is slidably connected to the guide rod 36 along the axial direction. A first elastic element 310 is provided between the guide rod 36 and the connecting rod 37. The elastic force of the first elastic element 310 acts on the connecting rod 37 in the direction closer to the rotating drum 34. The first elastic element 310 is preferably a first compression spring sleeved on the guide rod 36. One end of the first compression spring abuts against the end of the guide rod 36 away from the rotating drum 34, and the other end abuts against the connecting rod 37. A sliding rod 38 is fixedly connected to the limiting plate 39. The sliding rod 38 is parallel to the guide rod 36. The connecting rod 37 is slidably connected to the sliding rod 38 along the length direction of the sliding rod 38. A second elastic element 311 is provided between the connecting rod 37 and the sliding rod 38. The elastic force of the second elastic element 311 acts on the sliding rod 38 in the direction away from the rotating cylinder 34. The second elastic element 311 is preferably a second compression spring sleeved on the sliding rod 38. One end of the second compression spring abuts against the end of the sliding rod 38 away from the limiting plate 39, and the other end abuts against the connecting rod 37. The kit 30 is also fixedly connected to an arc-shaped guide 313 via a bracket 312. The arc-shaped guide 313 corresponds to the orientation of the feeding pipe 31 and arches towards the rotating drum 34 in the middle. The arc-shaped guide 313 is located on the rotation path of the end of the slide rod 38 away from the limiting plate 39. When the slide rod 38 rotates around the rotating shaft 35 to the arc-shaped guide 313, its end slides and engages with the arc-shaped guide 313. To reduce the friction between the end of the slide rod 38 and the arc-shaped guide 313, a ball bearing 381 is rotatably embedded on the end of the slide rod 38 away from the limiting plate 39. The ball bearing 381 rolls and engages with the arc-shaped guide 313.

[0026] The hydraulic valve grooving mechanism provided by this invention can achieve automated cycle operation for batch grooving of valve sleeves. When grooving the valve sleeves: (1) First, the end of the rotating drum 34 furthest from the limiting plate 39 is aligned with the feeding pipe 31, such as... Figure 9 As shown, the slide bar 38 does not abut against the arched guide 313, and the limiting plate 39 is in the first working position where only the wedge end 392 is located in the channel. The valve sleeve to be processed at the bottom of the feeding pipe 31 slides into the inside of the rotating drum 34 under its own gravity and is blocked by the back plane of the wedge end 392 of the limiting plate 39. The valve sleeve is intercepted in the rotating drum 34.

[0027] (2) Then the drive unit 314 drives the rotating drum 34 to rotate clockwise until the end of the rotating drum 34 away from the limiting plate 39 is aligned with the feeding pipe 32 (during the rotation, the end of the rotating drum 34 away from the limiting plate 39 does not pass through the discharge pipe 33), such as Figure 10As shown, the valve sleeve inside the rotating drum 34 slides down to the feed pipe 32 and falls between the jaws of the power chuck 14 via the hollow spindle 12 until the valve sleeve is blocked by the tool holder 21 located directly below the power chuck 14. Then, the jaws of the power chuck 14 close and clamp the valve sleeve, and the tool feed system 2 can perform grooving on the lower end of the valve sleeve (the end exposed by the power chuck 14).

[0028] (3) After the lower end of the valve sleeve is grooved, the drive unit 314 drives the rotating drum 34 to rotate 180°, so that the end of the rotating drum 34 away from the limiting plate 39 is aligned with the feeding pipe 32 (of course, this step can also be performed before the lower end of the valve sleeve is grooved). Figure 11 As shown, the tool holder 21 lowers its height and moves laterally until the push rod 23 is located 1-5mm directly below the edge of the valve sleeve (the push rod 23 is offset from the limiting plate 39 in the vertical direction and is not directly below the limiting plate 39). Then, the power chuck 14 releases the valve sleeve, and the tool holder 21 drives the push rod 23 to rise. The push rod 23 lifts the valve sleeve upward, allowing the valve sleeve to pass through the hollow spindle 12 and the feeding pipe 32 into the rotating drum 34. When the top of the valve sleeve enters the rotating drum 34, it presses against the inclined surface of the wedge-shaped end 392 of the limiting plate 39, causing the limiting plate 39 and the connecting rod 37 to move against the elastic force of the first elastic element 310. The limiting plate 39 moves to the third station where both the flat plate 391 and the wedge-shaped end 392 have exited the channel. Figure 12 As shown, the valve sleeve can smoothly return from the feed pipe 32 to the rotating drum 34. When the valve sleeve is fully inside the rotating drum 34, the lower end of the valve sleeve also passes the limiting plate 39. The elastic force of the first elastic element 310 is released, causing the connecting rod 37 and the limiting plate 39 to move. The limiting plate 39 returns to the first working position where only the wedge end 392 is in the channel. The back plane of the wedge end 392 supports the bottom of the valve sleeve, so that the valve sleeve is intercepted in the rotating drum 34 and does not fall into the feed pipe 32. The unprocessed end of the valve sleeve faces the end of the rotating drum 34 away from the limiting plate 39.

[0029] (4) Then the drive unit 314 drives the rotating drum 34 to rotate 180° clockwise until the end of the rotating drum 34 away from the limit plate 39 is aligned with the feeding pipe 32 (during the rotation, the end of the rotating drum 34 away from the limit plate 39 does not pass through the discharge pipe 33), that is, it returns to the starting position. Figure 10 In the state shown, the ungrooved end of the valve sleeve inside the rotating drum 34 is facing downwards and aligned with the feed pipe 32. The valve sleeve inside the rotating drum 34 slides down to the feed pipe 32 and falls between the jaws of the power chuck 14 via the hollow spindle 12. The valve sleeve is blocked by the tool holder 21, and then the jaws of the power chuck 14 close and clamp the valve sleeve. The tool feed system 2 can then perform grooving on the unprocessed end of the valve sleeve.

[0030] (5) Once the grooving at this end of the valve sleeve is completed, it means that the grooving at both ends of the valve sleeve has been completed. The drive unit 314 drives the rotating drum 34 to rotate 180°, so that the end of the rotating drum 34 away from the limit plate 39 is aligned with the feed pipe 32, that is, it returns to the starting position. Figure 11 As shown, the tool holder 21 descends and moves laterally until the push rod 23 is located 1-5mm directly below the edge of the valve sleeve (the push rod 23 is offset from the limit plate 39 in the vertical direction and is not directly below the limit plate 39). Then, the power chuck 14 releases the valve sleeve, the tool holder 21 drives the push rod 23 to rise, and the push rod 23 lifts the valve sleeve upward, so that the valve sleeve passes through the hollow spindle 12 and the feeding pipe 32 in sequence into the rotating drum 34. When the top of the valve sleeve enters the rotating drum 34, it slides and abuts against the inclined surface of the wedge end 392, squeezing open the limit plate 39. After the valve sleeve is completely inside the rotating drum 34, the limit plate 39 is reset to the first position under the elastic force of the first elastic element 310, and the back plane of the wedge end 392 supports the valve sleeve.

[0031] (6) Finally, the drive unit 314 drives the rotating drum 34 to rotate until the end of the rotating drum 34 away from the limiting plate 39 is aligned with the feeding pipe 33, such as Figures 13-14 As shown, on the one hand, the valve sleeves that have completed double-end grooving in the rotating drum 34 slide down to the discharge pipe 33 for discharge. On the other hand, the end of the sliding rod 38 slides and abuts against the arched guide 313, so that the sliding rod 38 and the limiting plate 39 overcome the elastic force of the second elastic member 311 and slide. The limiting plate 39 slides to the second working position where both the wedge end 392 and the flat plate 391 are located in the channel. Thus, the flat plate 391 intercepts the valve sleeves to be processed in the feeding pipe 31, preventing the unprocessed valve sleeves in the feeding pipe 31 from entering the rotating drum 34. This avoids the valve sleeves stacked together in the feeding pipe 31 from squeezing the inclined surface of the wedge end 392 and squeezing the limiting plate 39 out of the channel, causing the unprocessed valve sleeves in the feeding pipe 31 to directly enter the rotating drum 34 and then immediately be discharged from the discharge pipe 33.

[0032] This completes one valve sleeve grooving cycle. Before starting the next cycle, the drive unit 314 drives the end of the rotary drum 34 away from the limiting plate 39 to align with the feeding pipe 31. Simultaneously, the slide rod 38 disengages from the arched guide 313, and the release of the elastic force of the second elastic element 311 causes the limiting plate 39 to slide back to its original position where only the wedge-shaped end 392 is within the channel. Driven by the drive unit 314, the rotary drum 34 rotates in an orderly fashion, repeating the loading, processing, reversing, and unloading steps to achieve continuous automated batch processing of the valve sleeve blank.

[0033] In the above technical solution, the feeding pipe 31 and the unloading pipe 33 are arranged coaxially. If the unprocessed valve sleeve temporarily stored in the feeding pipe 31 does not need to be further processed, the drive unit 314 drives the rotating drum 34 to rotate until one end of the rotating drum 34 with the limiting plate 39 is aligned with the unloading pipe 33. Then, the end of the rotating drum 34 away from the limiting plate 39 is aligned with the feeding pipe 31. The top cover of the spindle housing 11 is opened, and the connecting rod 37 is manually moved by a tool to force the limiting plate 39 to slide to the third position where both the flat plate part 391 and the wedge end 392 are out of the channel. The unprocessed valve sleeve temporarily stored in the feeding pipe 31 can then be quickly discharged through the rotating drum 34 and the unloading pipe 33 in sequence.

[0034] In another embodiment of the driving force source for the sliding of the limiting plate 39 on the rotating drum 34, the limiting plate 39 is driven by a linear drive (not shown in the figure) provided on the assembly 30 to achieve sliding, thereby actively and timely driving the limiting plate 39 to extend into the channel of the rotating drum 34 to intercept the valve sleeve or to exit the channel of the rotating drum 34 to release the valve sleeve. The linear drive is a component such as an electric push rod, hydraulic cylinder or pneumatic cylinder. The linear drive is provided on the rotating drum 34 or the arc-shaped part 341 and rotates synchronously with the rotating drum 34. The power supply of the linear drive is provided by a slip ring structure or a flexible wire. If a flexible wire is used, it should be ensured that the rotating drum 34 rotates continuously in any direction for no more than one revolution.

[0035] The present invention provides a hydraulic valve grooving mechanism, which, through the coordinated operation of the main shaft feeding system 3, the kit 30, the rotating drum 34, the limiting plate 39, and the drive unit 314, realizes the automated continuous operation of valve sleeve blank loading, turning, and unloading. It eliminates the need for manual or robotic arms to complete the loading, unloading, and valve sleeve turning operations, effectively solving the problems of low efficiency and high labor intensity of manual operation, while avoiding the disadvantage of high cost of robotic arm configuration, significantly reducing the production and operation costs of enterprises, and adapting to the batch processing needs of valve sleeves.

[0036] The foregoing description of certain exemplary embodiments of the present invention should not be construed as limiting the scope of protection of the claims. Those skilled in the art will recognize that the described embodiments can be modified in other ways without departing from the spirit and scope of the invention.

Claims

1. A hydraulic valve slotting mechanism comprising a spindle drive system, a tool feed system and a spindle feed system, characterised in that, The spindle feeding system includes: The kit has an annular cavity inside, and a feeding pipe, a feeding tube, and a discharge pipe are arranged radially on its periphery. The feeding tube is coaxially connected to the hollow spindle and the power chuck of the spindle drive system in sequence. The rotating cylinder has a rotating shaft fixedly connected to its central part along the radial direction. The rotating cylinder is rotatably connected to the kit through the rotating shaft so that it can rotate in the annular cavity. The opposite sides of the rotating cylinder are respectively provided with arc-shaped parts adapted to the annular cavity. A limiting plate, which is slidably connected to one end of the rotating drum along the axial direction of the rotating shaft, is used to adjust the opening and closing of the end of the rotating drum; The drive unit is used to drive the rotating drum to rotate so that the rotating drum can be coaxial with the feeding pipe, the feeding pipe and the discharge pipe respectively.

2. The hydraulic valve slotting mechanism of claim 1, wherein, Both the feeding pipe and the unloading pipe are arranged at an angle. The lower angle of the feeding pipe is connected to the kit, and the upper angle of the unloading pipe is connected to the kit.

3. The hydraulic valve slotting mechanism of claim 1, wherein, The inclination angle between the feeding pipe and the unloading pipe is 20°-30°.

4. The hydraulic valve grooving mechanism according to claim 1, characterized in that, The limiting plate is driven by a linear drive component on the kit to achieve sliding.

5. The hydraulic valve grooving mechanism according to claim 1, characterized in that, The limiting plate includes a connected flat plate and a wedge-shaped end, with the side of the wedge-shaped end facing the outside of the channel of the rotating cylinder being inclined. A guide rod coaxial with the rotating shaft is fixedly connected to the rotating cylinder, and a connecting rod is slidably connected to the guide rod. A first elastic element is provided between the guide rod and the connecting rod, exerting elastic force towards the rotating cylinder on the connecting rod. A slide rod fixedly connected to the limiting plate is slidably connected to the connecting rod, and a second elastic element is provided between the connecting rod and the slide rod, exerting elastic force away from the rotating cylinder on the slide rod. An arc-shaped arched guide is also fixedly connected to the kit, with the middle of the arched guide arching towards the rotating cylinder. The arched guide is located on the rotation path of the end of the slide rod away from the limiting plate.

6. The hydraulic valve grooving mechanism according to claim 5, characterized in that, The first elastic element is a first compression spring sleeved on the guide rod. One end of the first compression spring abuts against the end of the guide rod away from the rotating cylinder, and the other end abuts against the connecting rod.

7. The hydraulic valve grooving mechanism according to claim 5, characterized in that, The second elastic element is a second compression spring sleeved on the slide rod. One end of the second compression spring abuts against the end of the slide rod away from the limiting plate, and the other end abuts against the connecting rod.

8. The hydraulic valve grooving mechanism according to claim 5, characterized in that, A ball bearing is rotatably embedded at the end of the slide bar away from the limiting plate, and the ball bearing rolls in cooperation with the arched guide.

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