Cutting device for alloy steel valve rod production

Abstract

The utility model discloses a cutting device for alloy steel valve rod production, which relates to the technical field of cutting devices for alloy steel valve rod production, and comprises a workbench, an L-shaped shell is fixedly connected to the workbench, an L-shaped conveying channel for conveying a valve rod is arranged in the shell, and the conveying channel is provided with a cutting head. A containing cavity capable of containing the valve end of the valve rod is formed in the output terminal of the conveying channel, a round hole is formed in the side, away from the rod portion of the valve rod, of the containing cavity, an electromagnetic chuck capable of moving in the axial direction of the round hole is arranged in the round hole, and a fixing assembly is arranged on the side, extending in the conveying direction of the conveying channel, of the workbench. The fixing assembly comprises a fixing plate, a fixing block and a moving block, the fixing block and the moving block are arranged on the fixing plate, the fixing block is fixedly connected to the side, close to the containing cavity, of the fixing plate, the moving block is movably arranged on the side, away from the containing cavity, of the fixing block, and the device has the advantage of improving the cutting efficiency and cutting precision of the valve rod.

Description

Technical Field

[0001] This utility model relates to the technical field of a cutting device for producing alloy steel valve stems, specifically a cutting device for producing alloy steel valve stems. Background Technology

[0002] The intake valve's function is to draw air into the engine and mix it with fuel for combustion; the exhaust valve's function is to expel the combustible gases and dissipate heat. Both intake and exhaust valves consist of valve stems and valve seats, demonstrating that valve stems are essential components of a vehicle engine. During manufacturing, valve stems undergo grinding using various grinding machines, involving grinding the sides and cutting the end faces. The reason for end face cutting is that the stems may not be the correct length after forming, requiring minor trimming.

[0003] A valve stem cutting and blanking device with authorization announcement number CN222430092U includes a mounting platform and a bottom seat. The inner side wall of the bottom seat is rotatably connected to a mounting ring, and a square box is fixedly installed on the inner wall of the mounting ring. After the valve stem is fixed by the fixing components through the electric push rod, the mounting ring, the fixing plate, the slider, the long rod, and the moving plate, the electric push rod can be opened to push the moving plate so that the valve stem cooperates with the clamping seat. At the same time, the fixing ring and the rotating ring are also pushed. Then, with the cooperation of the long rod and the inclined groove, the clamping plate moves to clamp multiple sets of valve stems that are in contact with the clamping seat.

[0004] Although this patent can achieve the feature of cutting multiple valve stems at the same time, the installation and fixation effect is poor, the cutting length cannot be adjusted, and it requires manual loading and unloading, resulting in low cutting efficiency.

[0005] Therefore, it is necessary to design a cutting device for the production of alloy steel valve stems that improves the cutting efficiency and accuracy of valve stems. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a cutting device for producing alloy steel valve stems, thereby solving the problems mentioned in the background section.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a cutting device for producing alloy steel valve stems, including a worktable, an L-shaped housing fixedly connected to the worktable, an L-shaped transmission channel for transmitting valve stems inside the housing, an output terminal of the transmission channel forming a receiving cavity for accommodating the valve end of the valve stem, a circular hole opened on the side of the receiving cavity away from the valve stem, an electromagnetic chuck movable along the axial direction of the circular hole is provided in the circular hole, a fixing component is provided on the side of the worktable extending towards the transmission direction of the transmission channel, the fixing component includes a fixing plate and a fixing block and a moving block provided thereon, the fixing block is fixedly connected to the side of the fixing plate near the receiving cavity, the moving block is movably arranged on the side away from the receiving cavity relative to the fixing block, locking holes are opened on the side away from the fixing plate, three locking blocks movable along the radial direction of the locking holes are provided in each of the two locking holes, a cutting component is provided on the side of the worktable, the cutting component includes a cutting machine movable along the axial direction of the valve stem.

[0008] This utility model further describes that the movable block has a threaded hole, and a lead screw is screwed into the threaded hole. One end of the lead screw is embedded in the fixed block and rotatably connected to the fixed block. A support block is also fixedly connected to the fixed plate. The support block is located on the side of the movable block away from the fixed block. A gear is fixedly connected to the end of the lead screw away from the fixed block through the support block. The lead screw is rotatably connected to the support block. A drive motor is fixedly connected to the fixed plate. A gear is fixedly connected to the output end of the drive motor. Gear 1 and gear 2 mesh. A slider is fixedly connected to the side of the movable block near the fixed plate. A groove is provided on the fixed plate corresponding to slider 1. Sliding slider 1 is slidably connected to groove 1.

[0009] This invention further illustrates that the opening size of the fixed block and the movable block is larger than the diameter of the valve stem.

[0010] This utility model further illustrates that each of the three locking blocks is provided with a hydraulic telescopic cylinder on the side away from the center of the locking hole. The fixed end of the hydraulic telescopic cylinder is inserted through the inner wall of the locking hole, and the output end of the hydraulic telescopic cylinder is fixedly connected to the locking block.

[0011] The present invention further describes that a base is fixedly connected to the lower side of the cutting machine, the base is slidably connected to the worktable, a slider two is fixedly connected to the lower side of the base, a groove two is opened on the worktable corresponding to the slider two, the slider two is slidably connected in the groove two, a hydraulic telescopic cylinder two is provided on the side of the base away from the shell, the fixed end of the hydraulic telescopic cylinder two is fixedly connected to the worktable, and the output end of the hydraulic telescopic cylinder two is fixedly connected to the base.

[0012] The present invention further describes that a support platform is fixedly connected to the workbench, the support platform is located on the side of the housing away from the cutting assembly, and a groove is provided on the upper side of the support platform.

[0013] This utility model further illustrates that a connecting plate is fixedly connected to the support platform, and the connecting plate has a second groove facing the support platform. Two telescopic rods are hinged to the upper inner wall of the second groove, and the two telescopic rods are arranged along the length direction of the second groove. An electric gripper is fixedly connected to the end of each telescopic rod away from the hinged groove. An electric telescopic rod is also hinged to the inner wall of the second groove corresponding to the two telescopic rods, and the output end of the electric telescopic rod is hinged to the output end of the telescopic rod.

[0014] The present invention further describes that a baffle is provided on the side of the fixed component facing the lower end of the transmission channel in the direction of input. The baffle is located on the side of the rod of the second valve stem to be cut near the receiving cavity. A rotary motor is provided on the side of the baffle away from the housing. The fixed end of the rotary motor is fixedly connected to the worktable, and the output end of the rotary motor is fixedly connected to the baffle.

[0015] This utility model further illustrates that a waste trough is provided within the travel range of the corresponding moving block on the worktable.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are: This utility model achieves continuous transmission of valve stem by setting an L-shaped transmission channel, thereby improving the cutting efficiency of valve stem.

[0017] By setting up a receiving cavity, fixing components, and an electromagnetic chuck, the valve stem to be cut is locked and fixed in the radial and axial directions, improving the stability and cutting accuracy during the valve stem cutting process.

[0018] The cutting position of the valve stem can be adjusted by setting the cutting component to meet the cutting requirements of different valve stem sizes. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a top view of the left front side of the overall structure of this utility model;

[0021] Figure 2 This is the utility model Figure 1 A magnified schematic diagram of the structure of region A;

[0022] Figure 3This is a partial cross-sectional view of the shell structure of this utility model;

[0023] Figure 4 This is a top view of the overall structure of this utility model from the left rear side;

[0024] Figure 5 This is the utility model Figure 4 A magnified schematic diagram of the local structure of region B;

[0025] Figure 6 This is a schematic diagram of the fixing component structure of this utility model;

[0026] Figure 7 This is a schematic diagram of the support platform and related structures of this utility model;

[0027] In the diagram: 1. Workbench; 2. Housing; 3. Support plate; 4. Transmission channel; 5. Receiving cavity; 6. Circular hole; 7. Electromagnetic chuck; 8. Connecting block; 9. Electric telescopic rod one; 10. Fixing assembly; 11. Fixing plate; 12. Fixing block; 13. Moving block; 14. Lead screw; 15. Support block; 16. Gear one; 17. Drive motor; 18. Gear two; 19. Slider one; 20. Slide one; 21. Locking hole; 22. 23. Locking block; 24. Hydraulic telescopic cylinder one; 25. Cutting assembly; 26. Cutting machine; 27. Base; 28. Slide groove two; 29. ​​Hydraulic telescopic cylinder two; 30. Waste trough; 31. Support platform; 32. Groove one; 33. Groove two; 34. Telescopic rod; 35. Electric gripper; 36. Electric telescopic rod two; 37. Baffle; 38. Rotary motor; 39. Guide groove; 40. Guide rail; 41. Slider two; 42. Connecting plate. Detailed Implementation

[0028] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-7 The present invention provides a technical solution: a cutting device for producing alloy steel valve stems, including a workbench 1, a housing 2 fixedly connected to the workbench 1, the housing 2 having an "L" shaped structure, a support plate 3 fixedly connected to one vertically arranged side of the housing 2, the support plate 3 being fixedly connected to the workbench 1, thereby providing fixed support for the housing 2.

[0030] The housing 2 has a transmission channel 4, which is an "L" shaped bend. The cross-sectional shape of the transmission channel 4 is the same as the radial cross-section of the valve end of the valve stem. The valve end of the valve stem is located in the transmission channel 4, thereby limiting the transmission of the valve stem in the radial direction, so that several valve stems are arranged along the path of the transmission channel 4.

[0031] like Figure 3 At the transmission end of the transmission channel 4, a receiving cavity 5 is formed to accommodate the valve stem. The end of the receiving cavity 5 away from the transmission channel 4 can fit and wrap around half of the valve stem, thereby limiting and blocking the valve stem in the radial direction.

[0032] A circular hole 6 is provided on the side of the receiving cavity 5 away from the valve stem. The circular hole 6 is concentrically arranged with the valve stem that is stationary in the receiving cavity 5. The diameter of the circular hole 6 is not less than the diameter of the valve end of the valve stem.

[0033] like Figure 2 An electromagnetic chuck 7 is slidably connected inside the circular hole 6, and the outer wall of the electromagnetic chuck 7 is in direct contact with the inner wall of the circular hole 6.

[0034] A connecting block 8 is fixedly connected to the side of the electromagnetic chuck 7 away from the valve stem. The connecting block 8 is slidably connected to the worktable 1. Two guide grooves 38 are opened on the side of the connecting block 8 near the worktable 1. The two guide grooves 38 are arranged along the length direction of the connecting block 8. A guide rail 39 is fixedly connected to the worktable 1 corresponding to the guide grooves 38. The guide grooves 38 and the guide rails 39 cooperate with each other.

[0035] An electric telescopic rod 9 is provided on the side of the connecting block 8 away from the electromagnetic chuck 7. The fixed end of the electric telescopic rod 9 is fixedly connected to the workbench 1, and the output end of the electric telescopic rod 9 is fixedly connected to the connecting block 8.

[0036] like Figure 4 , Figure 5 A fixing component 10 is provided on one side of the workbench 1 that extends in the direction of transmission to the transmission channel 4.

[0037] like Figure 6 The fixing component 10 includes a fixing plate 11, which is fixedly connected to the worktable 1. The length direction of the fixing plate 11 is perpendicular to the input direction of the lower end of the transmission channel 4. A fixing block 12 and a moving block 13 are provided on the side of the fixing plate 11 facing the input direction of the lower end of the transmission channel 4. The moving block 13 and the fixing block 12 are arranged in a straight line along the length direction of the fixing plate 11. The fixing block 12 is fixedly connected to the fixing plate 11. The fixing block 12 is located on the side close to the receiving cavity 5, and the moving block 13 is located on the side away from the receiving cavity 5 relative to the fixing block 12.

[0038] The movable block 13 has a threaded hole, and a lead screw 14 is screwed into the threaded hole. The axis of the lead screw 14 is in the same direction as the length of the fixed plate 1. The lead screw 14 is set horizontally, and one end of the lead screw 14 is embedded in the fixed block 12 and rotatably connected to the fixed block 12.

[0039] Support block 15 is located on the side of movable block 13 away from fixed block 12. Support block 15 is also fixedly connected to fixed plate 11. One end of lead screw 14 away from fixed block 12 passes through support block 15 and is fixedly connected to gear 16. Lead screw 14 is rotatably connected to support block 15. Drive motor 17 is fixedly connected to fixed plate 11. Gear 18 is fixedly connected to the output end of drive motor 17. Gear 16 and gear 18 mesh. Drive motor 17 drives lead screw 14 to rotate, thereby driving movable block 13 to move.

[0040] A slider 19 is fixedly connected to the side of the movable block 13 near the fixed plate 11. The slider 19 has a dovetail-shaped structure. The fixed plate 11 has a groove 20 corresponding to the slider 19. The slider 19 is slidably connected to the groove 20.

[0041] Both the fixed block 12 and the movable block 13 are provided with locking holes 21. The locking holes 21 open to the side away from the fixed plate 11, and the opening size is larger than the diameter of the valve stem.

[0042] Three locking blocks 22 are provided inside the locking hole 21, and the three locking blocks 22 are evenly distributed in a circle with the center of the locking hole 21 as the center.

[0043] Each of the three locking blocks 22 is equipped with a hydraulic telescopic cylinder 23 on the side away from the center of the locking hole 21. The fixed end of the hydraulic telescopic cylinder 23 passes through the inner wall of the locking hole 21, and the output end of the hydraulic telescopic cylinder 23 is fixedly connected to the locking block 22. The locking block 22 is controlled to move radially along the locking hole 21 by the hydraulic telescopic cylinder 23.

[0044] When the locking block 22 is located away from the center of the locking hole 21, the valve stem can enter the locking hole 21 through the opening as it moves along the transmission channel 4.

[0045] like Figure 5 A baffle 36 is provided on the side of the fixing component 10 facing the lower end of the transmission channel 4 in the direction of input. The baffle 36 is located on the side of the second valve stem to be cut near the receiving cavity 5 and is used to block the valve stem.

[0046] A rotary motor 37 is provided on the side of the baffle 36 away from the housing 2. The fixed end of the rotary motor 37 is fixedly connected to the worktable 1, and the output end of the rotary motor 37 is fixedly connected to the baffle 36.

[0047] A cutting assembly 24 is provided on the side of the worktable 1 that is away from the receiving cavity 5 in the length direction relative to the fixed plate 11.

[0048] The cutting assembly 24 includes a cutting machine 25, which is an existing laser cutting machine. A base 26 is fixedly connected to the lower side of the cutting machine 25. The base 26 is slidably connected to the worktable 1. A slider 40 is fixedly connected to the lower side of the base 26. The worktable 1 has a groove 27 corresponding to the slider 40. The slider 40 is slidably connected in the groove 27. A hydraulic telescopic cylinder 28 is provided on the side of the base 26 away from the housing 2. The fixed end of the hydraulic telescopic cylinder 28 is fixedly connected to the worktable 1. The output end of the hydraulic telescopic cylinder 28 is fixedly connected to the base 26. The base 26 is moved by the hydraulic telescopic cylinder 28, thereby controlling the cutting size of the valve stem of the cutting machine 25.

[0049] A waste trough 29 is provided on the worktable 1 within the travel range of the corresponding moving block 13. The waste trough 29 is used to collect waste material and chips after the cutting machine 25 cuts the valve stem.

[0050] like Figure 7 A support platform 30 is fixedly connected to the workbench 1. The support platform 30 is located on the side of the housing 2 away from the cutting assembly 24. A groove 31 is provided on the upper side of the support platform 30. The cross-sectional shape of the groove 31 along the vertical direction is consistent with the cross-sectional shape of half of the valve stem, and is used to place the valve stem after cutting.

[0051] A connecting plate 41 is fixedly connected to the support platform 30. The connecting plate 41 has an "N" shaped structure, which makes the connecting plate 41 have a second groove 32. The second groove 32 faces the support platform 30. Two telescopic rods 33 are hinged to the upper inner wall of the second groove 32. The two telescopic rods 33 are arranged along the length of the second groove 32. An electric gripper 34 is fixedly connected to the end of the two telescopic rods 33 away from the hinged groove 32. An electric telescopic rod 35 is also hinged to the inner wall of the second groove 32 corresponding to the two telescopic rods 33. The output end of the electric telescopic rod 35 is hinged to the output end of the telescopic rod 33.

[0052] In this embodiment, the first valve stem to be cut moves into the receiving cavity 5 under the action of gravity through the transmission channel 4 of the housing 2. At the same time, the second valve stem to be cut moves to one side of the receiving cavity 5 under the action of gravity of the other valve stems. The rotary motor 37 is started, so that the baffle 36 rotates from a horizontal state to a vertical state to block the second valve stem to be cut.

[0053] At this time, the output ends of the hydraulic telescopic cylinder 23 on the fixed block 12 and the moving block 13 of the fixed assembly 10 are in the retracted state, the locking block 22 is in a position away from the center of the locking hole 21, and the rod part of the first valve stem to be cut enters the locking hole 21 through the opening.

[0054] Based on the required length to be cut from the valve stem, control the drive motor 17 to rotate, the lead screw 14 to rotate accordingly, and drive the moving block 13 to move to the appropriate position.

[0055] Subsequently, the output ends of the hydraulic telescopic cylinders 23 on the fixed block 12 and the moving block 13 are simultaneously extended, causing the locking block 22 to move toward the center of the locking hole 21 to press and lock the valve stem. At the same time, the electromagnetic chuck 7 magnetically attracts and fixes the valve end of the valve stem, thereby locking and fixing the valve stem in both the axial and radial directions, improving the stability and cutting accuracy of the valve stem during subsequent cutting.

[0056] After the locking block 22 on the fixed block 12 and the moving block 13 locks and fixes the valve stem, the output end of the hydraulic telescopic cylinder 28 is controlled to drive the base 26 to move, so that the output end of the cutting machine 25 moves to the cutting position of the valve stem, and the cutting machine 25 is controlled to run, so that the output end of the cutting machine 25 cuts the valve stem.

[0057] The waste generated during cutting and the waste material removed after cutting all fall into the waste trough 29.

[0058] After the cutting is completed, the output end of the hydraulic telescopic cylinder 23 of the control fixing component 10 retracts, so that the locking block 22 on the fixing block 12 and the moving block 13 does not lock and fix the valve stem.

[0059] Then, the output end of the electric telescopic rod 9 is retracted, so that the electromagnetic chuck 7 can pick up the cut valve stem and move it out of the housing 2 from the side of the round hole 6, and move it to the side of the support platform 30.

[0060] At the same time, the rotary motor 37 is controlled again to drive the baffle 36 to rotate and reset. The second valve stem to be cut moves into the receiving cavity 5 under the action of the other valve stems. Then, the rotary motor 37 is controlled again to drive the baffle 36 to rotate, blocking the next valve stem.

[0061] For the valve stem removed from housing 2, the output end of the electric telescopic rod 35 is extended and the telescopic rod 33 is rotated, so that the output end of the electric gripper 34 clamps the stem of the valve stem. After clamping, the output end of the electric telescopic rod 35 is retracted again, the electric gripper 34 moves the valve stem to the support platform 30, and the output end of the electric gripper 34 is released, placing the valve stem in the groove on the support platform 30. This completes the cutting and placement of the valve stem.

[0062] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cutting device for producing alloy steel valve stems, characterized in that: The system includes a workbench (1), on which an L-shaped housing (2) is fixedly connected. The housing (2) contains an L-shaped transmission channel (4) for transmitting valve stems. The output terminal of the transmission channel (4) forms a receiving cavity (5) capable of accommodating the valve stem valve end. A circular hole (6) is provided on the side of the receiving cavity (5) away from the valve stem. An electromagnetic chuck (7) movable along the axial direction of the circular hole (6) is provided inside the circular hole (6). A fixing assembly (10) is provided on the side of the workbench (1) extending towards the transmission channel (4). The fixing assembly (10) includes a fixing plate (11) and a fixing block (12) and a moving block (13) disposed thereon. 13), the fixed block (12) is fixedly connected to the side of the fixed plate (11) near the receiving cavity (5), and the movable block (13) is movably arranged on the side away from the receiving cavity (5) relative to the fixed block (12). Both the fixed block (12) and the movable block (13) are provided with locking holes (21). The locking holes (21) open to the side away from the fixed plate (11). Each of the two locking holes (21) is provided with three locking blocks (22) that can move in the radial direction of the locking holes (21). The worktable (1) is provided with a cutting assembly (24) on the side. The cutting assembly (24) includes a cutting machine (25) that can move in the axial direction of the valve stem.

2. The cutting device for producing alloy steel valve stems according to claim 1, characterized in that: The movable block (13) has a threaded hole, and a lead screw (14) is screwed into the threaded hole. One end of the lead screw (14) is embedded in the fixed block (12) and rotatably connected to the fixed block (12). A support block (15) is fixedly connected to the fixed plate (11). The support block (15) is located on the side of the movable block (13) away from the fixed block (12). The end of the lead screw (14) away from the fixed block (12) passes through the support block (15) and is fixedly connected to a gear (16). 4) Rotatably connected to the support block (15), the fixed plate (11) is fixedly connected to the drive motor (17), the output end of the drive motor (17) is fixedly connected to the gear two (18), the gear one (16) meshes with the gear two (18), the moving block (13) is fixedly connected to the slider one (19) on the side close to the fixed plate (11), the fixed plate (11) is provided with a sliding groove one (20) corresponding to the slider one (19), and the slider one (19) is slidably connected to the sliding groove one (20).

3. The cutting device for producing alloy steel valve stems according to claim 2, characterized in that: The opening size of the fixed block (12) and the moving block (13) is larger than the diameter of the valve stem.

4. The cutting device for producing alloy steel valve stems according to claim 3, characterized in that: Each of the three locking blocks (22) is provided with a hydraulic telescopic cylinder (23) on the side away from the center of the locking hole (21). The fixed end of the hydraulic telescopic cylinder (23) passes through the inner wall of the locking hole (21), and the output end of the hydraulic telescopic cylinder (23) is fixedly connected to the locking block (22).

5. The cutting device for producing alloy steel valve stems according to claim 4, characterized in that: The cutting machine (25) is fixedly connected to a base (26) on its lower side. The base (26) is slidably connected to the worktable (1). A slider (40) is fixedly connected to the lower side of the base (26). The worktable (1) is provided with a groove (27) corresponding to the slider (40). The slider (40) is slidably connected in the groove (27). A hydraulic telescopic cylinder (28) is provided on the side of the base (26) away from the housing (2). The fixed end of the hydraulic telescopic cylinder (28) is fixedly connected to the worktable (1). The output end of the hydraulic telescopic cylinder (28) is fixedly connected to the base (26).

6. The cutting device for producing alloy steel valve stems according to claim 5, characterized in that: A support platform (30) is fixedly connected to the workbench (1). The support platform (30) is located on the side of the housing (2) away from the cutting assembly (24). A groove (31) is provided on the upper side of the support platform (30).

7. The cutting device for producing alloy steel valve stems according to claim 6, characterized in that: A connecting plate (41) is fixedly connected to the support platform (30). The connecting plate (41) has a groove (32). The groove (32) faces the support platform (30). Two telescopic rods (33) are hinged to the upper inner wall of the groove (32). The two telescopic rods (33) are arranged along the length of the groove (32). An electric gripper (34) is fixedly connected to the end of the two telescopic rods (33) away from the hinged groove (32). An electric telescopic rod (35) is also hinged to the inner wall of the groove (32) corresponding to the two telescopic rods (33). The output end of the electric telescopic rod (35) is hinged to the output end of the telescopic rod (33).

8. The cutting device for producing alloy steel valve stems according to claim 7, characterized in that: The fixed component (10) is provided with a baffle (36) on the side facing the lower end of the transmission channel (4) in the direction of input. The baffle (36) is located on the side of the rod of the second valve stem to be cut near the receiving cavity (5). A rotary motor (37) is provided on the side of the baffle (36) away from the housing (2). The fixed end of the rotary motor (37) is fixedly connected to the worktable (1), and the output end of the rotary motor (37) is fixedly connected to the baffle (36).

9. A cutting device for producing alloy steel valve stems according to claim 8, characterized in that: Waste trough (29) is provided on the workbench (1) within the travel range of the corresponding moving block (13).

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