An automated grinding apparatus for valve stems

Abstract

An automatic grinding equipment for valve rod, comprising: a chassis; a grinding mechanism mounted on the chassis; two fixed plates, a connecting shaft and a transmission device are arranged on the grinding mechanism; the two fixed plates are symmetrically fixedly installed on the chassis; a turntable is rotatably installed on the fixed plate and is driven by a motor fixedly installed on the chassis; the two turntables are fixedly connected through the connecting shaft; two grinding sleeves are rotatably installed on the two turntables; the two grinding sleeves are driven to rotate by the transmission device while the turntable rotates; the transmission device is installed on the fixed plate and the grinding sleeve; two polishing blocks are elastically and slidably installed on the grinding sleeve; a clamping plate is elastically and slidably installed on the grinding sleeve and corresponds to the polishing block, and is used for fixing the polishing block; the valve rod can be ground as a whole, and the degree of automation is high, and the grinding work of the valve rod can be efficiently completed.

Description

TECHNICAL FIELD

[0001] The present application relates to a grinding device, in particular to an automatic grinding device for valve stems. BACKGROUND

[0002] The valve stem is an important component of the valve, which is used for transmission, and is connected to the actuator or handle at the top and directly drives the valve core to move or rotate at the bottom to achieve the opening and closing or regulating function of the valve. During the opening and closing process of the valve, the valve stem is not only a moving part and a force receiving part, but also a sealing part. At the same time, it is impacted and corroded by the medium, and also rubs against the packing. Therefore, when selecting the material of the valve stem, it must be ensured that it has sufficient strength, good impact toughness, anti-scratch property and corrosion resistance at a specified temperature. The valve stem is a consumable part, and when selecting, attention should also be paid to the mechanical processing performance and heat treatment performance of the material.

[0003] The utility model discloses a kind of oil ejector valve stem end face grinding devices, including machine table, the sand wheel grinding machine of mobile being equipped on the machine table, the working end of the sand wheel grinding machine is equipped with with it cooperation valve stem positioning frame, V-shaped groove for placing valve stem is equipped on the valve stem positioning frame, one side of the valve stem positioning frame is equipped with pressure roller mechanism, the pressure roller mechanism includes the rotating arm of one end being arranged on the machine table, the other end of the rotating arm is equipped with pressure roller, when working, the pressure roller is in contact with valve stem;However, the utility model can only grind the end face of valve stem, cannot grind the whole valve stem, sometimes there are defects in the whole valve stem after production forming, need to be ground, make valve stem smooth, improve sealing property.

[0004] Therefore, it is urgent to invent an automatic grinding device capable of grinding the whole valve stem. SUMMARY

[0005] In order to solve the problems in the background art, the present application provides an automatic grinding device for valve stems, and the specific technical solutions are as follows:

[0006] An automatic grinding device for valve stems, comprising a chassis and a control device; a moving mechanism and a grinding mechanism are installed on the chassis;

[0007] Two fixed plates, a connecting shaft and a transmission device are provided on the grinding mechanism; the two fixed plates are symmetrically fixedly installed on the chassis; a turntable is rotatably installed on the fixed plate and driven by a motor two fixedly installed on the chassis; the two turntables are fixedly connected through the connecting shaft;

[0008] Two grinding sleeves are rotatably installed on the two turntables; the two grinding sleeves are driven to rotate by the transmission device while the turntables rotate; the transmission device is installed on the fixed plate and the grinding sleeves;

[0009] Two polishing blocks are elastically slidably mounted on the grinding sleeve; a clamping plate is elastically slidably mounted on the grinding sleeve corresponding to the polishing blocks, for fixing the polishing blocks;

[0010] The moving mechanism can fix and move the valve stem into the grinding sleeve;

[0011] When the moving mechanism moves the valve stem into the grinding sleeve, the polishing blocks are abutted against the valve stem, and the positions of the polishing blocks are fixed by the clamping plates; the motor two is started to drive the grinding sleeve to rotate, so that the valve stem is ground as a whole;

[0012] The control device is used for controlling the operation of the entire automatic valve stem grinding device except the control device itself.

[0013] Further, the transmission device comprises two gear rings two and two gear rings three; the two gear rings three are fixedly installed on the two fixed plates respectively; the two gear rings two are fixedly installed on the two ends of each grinding sleeve; and the gear rings three are engaged with the gear rings two.

[0014] Further, the moving mechanism is provided with a cylinder one and a connecting frame; the cylinder one is fixedly installed on the base frame; the connecting frame is rotatably connected to the output end of the cylinder one; two connecting rods are provided on the connecting frame corresponding to the two grinding sleeves; a clamping hand shaft is fixedly connected to the front end of each connecting rod; and a clamping device is arranged on the front end of the clamping hand shaft, for clamping the valve stem.

[0015] A telescopic rod is fixedly connected to the central position of the connecting frame; and the other end of the telescopic rod is fixedly connected to the central position of the corresponding rotating disc.

[0016] A separation plate is slidably installed on the connecting frame corresponding to the clamping plate, and is driven by a cylinder four fixedly installed on the connecting frame, for slidingly pushing the clamping plate to separate the clamping plate from the polishing blocks.

[0017] Further, a clamping mechanism is installed on the grinding mechanism.

[0018] The clamping mechanism is provided with a cylinder three, a rotating shaft and a fixed block; the fixed block is fixedly installed between the two fixed plates; the cylinder three is fixedly installed on the fixed block; a sliding block one is fixedly installed on the output end of the cylinder three; a sliding block two is fixedly installed on the lower end of the sliding block one; a sliding block three is slidably installed on the front side of the sliding block two, and a clamping plate two is rotatably installed on the rear side of the sliding block two; another clamping plate two is rotatably installed on the front side of the sliding block three.

[0019] The rotating shaft is rotatably installed between the two fixed plates, and a gear ring four is fixedly installed on the rotating shaft; a rack one is fixedly installed on the inner side of the sliding block one, and a rack two is fixedly installed on the sliding block three; the rack one and the rack two are engaged with the gear ring four.

[0020] The clamping plate two is provided with a rotating shaft two, the clamping plate two located at the front side is rotatably installed on the sliding block three through the rotating shaft two, and the clamping plate two located at the rear side is rotatably installed on the sliding block two through the rotating shaft two; the rotating shaft two is fixedly installed with a gear ring one at both ends; the rotating shaft two is in a square structure; the fixed block one is fixedly installed on the front and rear sides of each fixed plate and corresponds to the gear ring one; the lower end of the fixed block one is provided with a gear rack three, and the gear rack three and the gear ring one are intermittently engaged; the gear ring one moves from one end of the fixed block one to the other end, and the clamping plate two is just turned down to a certain degree; the two fixed blocks two are fixedly installed on the front and rear sides of each fixed plate and correspond to the square structure on the rotating shaft two; the distance between the two fixed blocks two is equal to the width of the square structure; the polishing block is moved by the two clamping plates two.

[0021] Further, the chassis is provided with a conveying mechanism;

[0022] The conveying mechanism is provided with a conveying sleeve and a rotating shaft; the two rotating shafts are rotatably installed on the front and rear ends of the chassis and are driven by a motor one fixedly installed on the chassis; the two rotating shafts are connected through a chain transmission; a plurality of conveying sleeves are fixedly installed on the chain; and the two clamping plates one are elastically and slidably installed on the conveying sleeve.

[0023] Further, the chassis is provided with a polishing plate, which corresponds to the valve rod in the conveying sleeve and is driven by a motor three fixedly installed on the chassis.

[0024] Compared with the prior art, the application has the following advantages:

[0025] The application can grind the valve rod as a whole, has a high degree of automation, and can efficiently complete the grinding work of the valve rod. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall assembly structure of the application;

[0027] Figure 2 It is a schematic diagram of the assembly structure of the chassis and the conveying mechanism of the application;

[0028] Figure 3 It is a schematic diagram of the assembly structure of the conveying mechanism of the application;

[0029] Figure 4 It is a schematic diagram of the assembly structure of the moving mechanism of the application;

[0030] Figures 5-7 It is a schematic diagram of the assembly structure of part of the moving mechanism of the application;

[0031] Figure 8 It is a schematic diagram of the assembly structure of the moving mechanism and the fixed plate of the application;

[0032] Figure 9 The enlarged structure diagram of A in the present application Figure 8 The enlarged structure diagram of A in the present application

[0033] Figure 10 The assembly structure diagram of the fixed block, the rotating shaft and the fixed plate in the present application

[0034] Figure 11 The assembly structure diagram of the partial clamping mechanism in the present application

[0035] Figure 12 The enlarged structure diagram of B in the present application Figure 11 The enlarged structure diagram of B in the present application

[0036] Figure 13 The assembly structure diagram of the clamping mechanism in the present application

[0037] Figure 14 The exploded structure diagram of the clamping mechanism in the present application

[0038] Figure 15 The assembly structure diagram of the clamping plate and the gear ring one in the present application

[0039] Figure 16 The assembly structure diagram of the fixed plate, the fixed block one and the fixed block two in the present application

[0040] Figure 17 The assembly structure diagram of the base frame and the grinding mechanism in the present application

[0041] Figures 18-20 The assembly structure diagram of the partial grinding mechanism in the present application

[0042] Figure 21 The structure diagram of the polishing block in the present application

[0043] Figure 22 The exploded structure diagram of the partial grinding mechanism in the present application

[0044] Figure 23 The assembly structure diagram of the rotating disc and the gear ring two in the present application

[0045] Figures 24-27 The assembly structure diagram of the partial moving mechanism and the partial grinding mechanism in the present application

[0046] Figure 28 The assembly structure diagram of the base frame, the polishing plate and the lead screw in the present application

[0047] In the diagram: 1-Transportation mechanism (101-Transportation sleeve, 102-Rotating shaft, 103-Chain, 104-Motor 1, 105-Clamping plate 1); 2-Moving mechanism (201-Cylinder 1, 202-Connecting frame, 203-Separating plate, 204-Cylinder 4, 205-Clamping shaft, 206-Upper clamping plate, 207-Lower clamping plate, 208-Cylinder 2, 209-Telescopic rod); 3-Clamping mechanism (301-Cylinder 3, 302-Slider 1, 303-Rotating shaft, 304-Slider) 2. 305-Slider 3, 306-Clamping Plate 2, 307-Gear Ring 1, 308-Fixing Block); 4-Grinding Mechanism (401-Fixing Plate, 402-Turntable, 403-Gear 1, 404-Gear 2, 405-Motor 2, 406-Connecting Shaft, 407-Gear Ring 2, 408-Grinding Block, 409-Clamping Plate, 410-Grinding Sleeve, 411-Grinding Plate, 412-Gear Ring 3, 413-Lead Screw, 414-Fixing Block 1, 415-Fixing Block 2); 5-Base Frame. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention. Example

[0049] like Figure 1 As shown, an automated grinding equipment for valve stems includes: a base frame 5 and a control device; a transport mechanism 1, a moving mechanism 2 and a grinding mechanism 4 are mounted on the base frame 5; a clamping mechanism 3 is mounted on the grinding mechanism 4; the control device is used to control the operation of the entire automated grinding equipment for valve stems except for itself.

[0050] Specifically, such as Figures 2-3 As shown, the transport mechanism 1 is equipped with a transport sleeve 101 and a rotating shaft 102; the two rotating shafts 102 are rotatably mounted on the front and rear ends of the base frame 5 and are driven by a motor 104 fixedly mounted on the base frame 5; the two rotating shafts 102 are connected by a chain 103; multiple transport sleeves 101 are fixedly mounted on the chain 103; two clamping plates 105 are elastically slidably mounted on the transport sleeves 101.

[0051] The operator places the valve stem between two clamping plates 105 to fix the valve stem in place. When placing the valve stem, simply place the unground valve stem in the upper transport sleeve 101, and then start the motor 104. The transport sleeve 101 will carry the valve stem to the designated position.

[0052] Specifically, as Figures 17-27 shown, the grinding mechanism 4 is provided with two fixed plates 401, a connecting shaft 406 and a transmission device; the transmission device includes gear ring two 407 and gear ring three 412;

[0053] The two fixed plates 401 are symmetrically fixedly installed on the chassis 5; the fixed plate 401 is rotatably installed with a rotating disc 402; the center positions of the two rotating discs 402 are fixedly connected through the connecting shaft 406; the gear one 403 and the gear two 404 are rotatably installed on the chassis 5; the gear two 404 is fixedly installed at the center position of the corresponding rotating disc 402; the motor two 405 is fixedly installed on the chassis 5, and the output end is fixedly connected with the gear one 403; the gear one 403 is engaged with the gear two 404; the gear one 403 is driven to rotate by the motor two 405, thereby driving the two rotating discs 402 to synchronously rotate on the fixed plate 401;

[0054] The two rotating discs 402 are rotatably installed with two grinding sleeves 410; the gear ring three 412 is fixedly installed on the inner side of the fixed plate 401, and the gear ring two 407 is fixedly installed on both ends of each grinding sleeve 410; the gear ring three 412 is engaged with the gear ring two 407;

[0055] The rotating disc 402 is rotated to drive the two grinding sleeves 410 to rotate; the gear ring two 407 on the grinding sleeve 410 is engaged with the gear ring three 412 on the inner side of the fixed plate 401, thereby making the two grinding sleeves 410 rotate;

[0056] The two polishing blocks 408 are elastically slidably installed on the grinding sleeve 410 through the compression spring one (not shown in the figure); when not subjected to external force, the two polishing blocks 408 are farthest away from each other, i.e. farthest away from the center position of the grinding sleeve 410; the polishing block 408 is provided with an inclined tooth one on one end of the outer side of the grinding sleeve 410; the clamping plate 409 corresponding to the polishing block 408 is elastically slidably installed on the grinding sleeve 410 through the compression spring two, and the clamping plate 409 is provided with corresponding clamping teeth two at the bottom end corresponding to the inclined tooth one of the polishing block 408, for fixing the polishing block 408; when the clamping teeth two on the clamping plate 409 are clamped on the clamping teeth one on the polishing block 408, the polishing block 408 can only move in the direction of approaching the center position of the grinding sleeve 410; through the fixation of the clamping plate 409 to the polishing block 408, the polishing block 408 can always be in close contact with the valve stem during the grinding process, thereby ensuring the grinding effect.

[0057] In order to automatically realize the clamping of the polishing block 408 to the valve stem and speed up the work efficiency, as Figures 8-15As shown, the clamping mechanism 3 is provided with a cylinder three 301, a rotating shaft 303 and a fixed block 308; the fixed block 308 is fixedly installed between the two fixed plates 401; the cylinder three 301 is fixedly installed on the fixed block 308; the output end of the cylinder three 301 is fixedly installed with a sliding block one 302; the lower end of the sliding block one 302 is fixedly installed with a sliding block two 304; the front side of the sliding block two 304 is slidably installed with a sliding block three 305, and the rear side is rotatably installed with a clamping plate two 306; the front side of the sliding block three 305 is rotatably installed with another clamping plate two 306;

[0058] The rotating shaft 303 is rotatably installed between the two fixed plates 401, and the upper surface is fixedly installed with a gear ring four; the inner side of the sliding block one 302 is fixedly installed with a rack one, and the sliding block three 305 is fixedly installed with a rack two; the rack one and the rack two are engaged with the gear ring four; the front side of the sliding block two 304 is provided with a groove, and the sliding block three 305 can slide into the groove of the sliding block two 304; the bottom end of the rack two is just in contact with the upper end of the sliding block two 304, slides over the upper end of the sliding block two 304 and is engaged with the gear ring four; the bottom end of the sliding block one 302 is provided with an empty space for the rack two to pass through, and the width of the empty space is equal to the width of the rack two, so that the rack two can stably slide forward and backward without left and right deviation;

[0059] Further, as shown in the figure, Figures 11-16 The clamping plate two 306 is provided with a rotating shaft two, and the front clamping plate two 306 is rotatably installed on the sliding block three 305 through the rotating shaft two, and the rear clamping plate two 306 is rotatably installed on the sliding block two 304 through the rotating shaft two;

[0060] The two ends of the rotating shaft two are fixedly installed with a gear ring one 307; a section of the rotating shaft two is in square structure; each fixed plate 401 is fixedly installed with a fixed block one 414 on the front and rear sides corresponding to the gear ring one 307; the fixed block one 414 is provided with a rack three at the lower end, and the rack three is intermittently engaged with the gear ring one 307; the gear ring one 307 moves from one end to the other end of the fixed block one 414, and the clamping plate two 306 just rotates 180 degrees; each fixed plate 401 is fixedly installed with two fixed blocks two 415 on the front and rear sides corresponding to the square structure on the rotating shaft two; the distance between the two fixed blocks two 415 is equal to the width of the square structure.

[0061] Start the cylinder three 301, drive the sliding block one 302 and the sliding block two 304 to slide forward, and then drive the rotating shaft 303 to rotate; the rotating shaft 303 drives the sliding block three 305 to move backward; the sliding block two 304 and the sliding block three 305 drive the corresponding clamping plate two 306 to move;

[0062] Initially, clamping plate 2 306 is horizontal, and gear ring 1 307 and rack 3 are engaged. The two clamping plates 2 306 slide towards each other while rotating. When clamping plate 2 306 moves to the other end of rack 3, it flips downwards 90 degrees to a vertical position. At this time, the square structure on rotating shaft 2 moves between the corresponding two fixed blocks 2 415. Driven by cylinder 3 301, the two clamping plates 2 306 continue to move, and the square structure on rotating shaft 2 slides between the two fixed blocks 2 415. At this time, rotating shaft 2 cannot rotate, and clamping plate 2 306... 06 remains in a vertical position; after moving a certain distance, the two clamping plates 306 abut against the grinding blocks 408 on both sides of the upper grinding sleeve 410, and under the drive of the cylinder 301, push the grinding blocks 408 to clamp the valve stem; after pushing the grinding blocks 408 to the designated position, the clamping plate 409 clamps the grinding blocks 408; then the cylinder 301 resets, driving the slider 1 302, slider 2 304 and slider 3 305 to reset; when slider 2 304 and slider 3 305 reset, they drive the corresponding clamping plate 306 to reset, and the clamping plate 2 306 returns to its initial state.

[0063] Specifically, such as Figures 4-7 As shown, the moving mechanism 2 is equipped with a cylinder 201 and a connecting frame 202; the cylinder 201 is fixedly mounted on the base frame 5; the connecting frame 202 is rotatably connected to the output end of the cylinder 201 via a bearing; the connecting frame 202 is equipped with two connecting rods, the other end of which passes through the turntable 402; a clamping shaft 205 is fixedly connected to the front end of each connecting rod; the front end of the clamping shaft 205 is equipped with a clamping device for clamping the valve stem;

[0064] As a specific embodiment of this implementation, the clamping device includes an upper clamping plate 206, a lower clamping plate 207, and a second cylinder 208; the upper clamping plate 206 is fixedly mounted on the clamping shaft 205, the lower clamping plate 207 is slidably mounted on the clamping shaft 205, and is driven by the second cylinder 208 fixedly mounted on the upper clamping plate 206.

[0065] A telescopic rod 209 is fixedly connected to the center of the connecting frame 202; the other end of the telescopic rod 209 is fixedly connected to the center of the corresponding turntable 402; when the turntable 402 rotates, it drives the connecting frame 202 to rotate synchronously.

[0066] A separation plate 203 is slidably mounted on the connecting frame 202 corresponding to the clamping plate 409, and is driven by a cylinder 204 fixedly mounted on the connecting frame 202; the front end of the separation plate 203 is provided with a downward inclined surface, which is used to push the clamping plate 409 to slide upward, so that the clamping plate 409 is disengaged from the grinding block 408.

[0067] When the valve rod reaches the specified position, the cylinder one 201 pushes the connecting frame 202 to move, and then drives the connecting rod to move, so as to drive the clamping hand shaft 205 to move, and then drives the clamping device to the specified position where the valve rod is located, the cylinder two 208 is started to drive the lower clamping plate 207 to slide and clamp the valve rod, so as to fix the valve rod on the clamping device; then the cylinder one is reset, so as to drive the valve rod to move, and then pull the valve rod out of the transport sleeve 101 and move to the grinding sleeve 410; then the clamping mechanism 3 is started as described above, and the grinding block 408 is clamped to drive the valve rod; the grinding mechanism 4 is started to drive the grinding block 408 to grind the valve rod;

[0068] When the grinding is completed, the grinding sleeve 410 in the initial position is rotated to the lower layer and corresponds to the transport sleeve 101 in the lower layer; the cylinder four 204 is started to drive the separation plate 203 to move, the separation plate 203 lifts the clamping plate 409, the lower end of the clamping plate 409 is separated from the grinding block 408, the grinding block 408 is reset under the action of the compression spring one, and the valve rod is loosened; the cylinder four 204 is reset to drive the separation plate 203 to reset; the clamping plate 409 is reset under the action of the compression spring two; then the cylinder one 201 is started to push the valve rod into the transport sleeve 101 in the lower layer, and then the cylinder two 208 is started to loosen the valve rod, and the valve rod is fixed in the transport sleeve 101 by the clamping plate one 105.

[0069] As a specific embodiment of the present embodiment, as shown in Figure 17 and Figure 28 Two grinding plates 411 are slidably installed on the chassis 5 and correspond to the valve rod in the lower layer transport sleeve 101, and are driven by the motor three fixedly installed on the chassis 5, for grinding the end position of the valve rod fixed by the clamping device;

[0070] After the valve rod is ground by the grinding block 408, it is transported into the transport sleeve 101 in the lower layer; the motor one 104 is started to drive the chain 103 to rotate, and then drive the transport sleeve 101 in the upper layer to drive the new valve rod to the specified position, synchronously, drive the transport sleeve 101 in the lower layer to move, and the transport sleeve 101 in the lower layer drives the valve rod ground by the grinding block 408 to slide through the grinding plate 411 to grind the end position of the valve rod.

[0071] The motor one 104, the cylinder one 201, the cylinder four 204, the cylinder two 208, the cylinder three 301, the motor two 405 and the motor three are electrically connected with the control device.

[0072] Working principle:

[0073] In the initial state, the two grinding sleeves 410 correspond to the transport sleeves 101 in the upper and lower layers and are vertically placed;

[0074] First step: the operator puts the valve stem to be ground into the upper transport sleeve 101, starts the motor 104, and brings the valve stem to the designated position;

[0075] Second step: start the cylinder 201 to push the clamping device to the designated position where the valve stem is located; start the cylinder 208 to fix the valve stem on the clamping device; start the cylinder 201 to reset and bring the valve stem into the grinding sleeve 410;

[0076] Third step: start the cylinder 301 to move the clamping plate 306 and then push the grinding block 408 to clamp the valve stem, and then reset the cylinder 301;

[0077] Fourth step: start the motor 405 to rotate the turntable 402 and the grinding sleeve 410 to grind the valve stem;

[0078] Fifth step: after the grinding block 408 finishes grinding the valve stem, the grinding sleeve 410 at the upper end rotates to the lower end; start the cylinder 201 to push the valve stem ground by the grinding block 408 into the lower transport sleeve 101, and start the cylinder 208 to release the clamping device;

[0079] Sixth step: start the motor 104 to bring the valve stem through the grinding plate 411 to grind the burrs on the end of the valve stem.

[0080] The above is only the preferred specific implementation of the embodiment, but the protection scope of the embodiment is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the embodiment within the technical range disclosed by the embodiment, which should be covered in the protection scope of the embodiment.

Claims

1. An automated grinding machine for valve stems, characterized in that, include: The base frame (5) and control device are mounted on the base frame (5), which is equipped with a moving mechanism (2) and a grinding mechanism (4). The grinding mechanism (4) is provided with two fixed plates (401), a connecting shaft (406) and a transmission device; the two fixed plates (401) are symmetrically fixedly installed on the base frame (5); a turntable (402) is rotatably installed on the fixed plate (401) and driven by a motor (405) fixedly installed on the base frame (5); the two turntables (402) are fixedly connected by the connecting shaft (406); Two grinding sleeves (410) are rotatably mounted on the two turntables (402); while the turntables (402) rotate, the two grinding sleeves (410) are driven to rotate by a transmission device; the transmission device is mounted on the fixed plate (401) and the grinding sleeves (410); Two grinding blocks (408) are elastically slidably mounted on the grinding sleeve (410); a clamping plate (409) is elastically slidably mounted on the grinding sleeve (410) corresponding to the grinding blocks (408) for fixing the grinding blocks (408); The moving mechanism (2) can fix the valve stem and move it into the grinding sleeve (410); When the moving mechanism (2) moves the valve stem into the grinding sleeve (410), the grinding block (408) is pressed against the valve stem, and the position of the grinding block (408) is fixed by the clamping plate (409); the second motor (405) is started to drive the grinding sleeve (410) to rotate, and the entire valve stem is ground. The moving mechanism (2) is provided with a cylinder (201) and a connecting frame (202); the cylinder (201) is fixedly installed on the base frame (5); the connecting frame (202) is rotatably connected to the output end of the cylinder (201); the connecting frame (202) is provided with two connecting rods corresponding to the two grinding sleeves (410), and each connecting rod is fixedly connected to a clamping shaft (205) at its front end; the clamping shaft (205) is provided with a clamping device at its front end for clamping the valve stem; A telescopic rod (209) is fixedly connected to the center of the connecting frame (202); the other end of the telescopic rod (209) is fixedly connected to the center of the corresponding turntable (402); A separation plate (203) is slidably installed on the connecting frame (202) corresponding to the card plate (409), and is driven by a cylinder four (204) fixedly installed on the connecting frame (202) to push the card plate (409) to slide, so that the card plate (409) is disengaged from the grinding block (408). The control device is used to control the operation of the automated grinding equipment for the entire valve stem, excluding itself.

2. The automated grinding equipment for valve stems according to claim 1, characterized in that: The transmission device includes a gear ring two (407) and a gear ring three (412); the two gear ring three (412) are fixedly installed on two fixed plates (401) respectively; a gear ring two (407) is fixedly installed on both ends of each grinding sleeve (410); the gear ring three (412) meshes with the gear ring two (407).

3. The automated grinding equipment for valve stems according to claim 1, characterized in that: The grinding mechanism (4) is equipped with a clamping mechanism (3); The clamping mechanism (3) is provided with a cylinder three (301), a rotating shaft (303) and a fixing block (308); the fixing block (308) is fixedly installed between two fixing plates (401); the cylinder three (301) is fixedly installed on the fixing block (308); a slider one (302) is fixedly installed on the output end of the cylinder three (301); a slider two (304) is fixedly installed at the lower end of the slider one (302); a slider three (305) is slidably installed on the front side of the slider two (304), and a clamping plate two (306) is rotatably installed on the rear side; another clamping plate two (306) is rotatably installed on the front side of the slider three (305). The rotating shaft (303) is rotatably installed between two fixed plates (401), and a gear ring four is fixedly installed on it; a rack one is fixedly installed on the inner side of the slider one (302), and a rack two is fixedly installed on the slider three (305); both rack one and rack two mesh with the gear ring four. The clamping plate two (306) is provided with a rotating shaft two. The clamping plate two (306) located on the front side is rotatably mounted on the slider three (305) via the rotating shaft two, and the clamping plate two (306) located on the rear side is rotatably mounted on the slider two (304) via the rotating shaft two. A gear ring one (307) is fixedly installed on both ends of the rotating shaft two. One section of the rotating shaft two has a square structure. A fixing block one (414) is fixedly installed on the front and rear sides of each fixing plate (401) corresponding to the gear ring one (307). The fixing block one (414) is lower The end is provided with a rack three, which intermittently meshes with a gear ring one (307); the gear ring one (307) moves from one end of the fixing block one (414) to the other end, and the clamping plate two (306) just flips down 90 degrees; two fixing blocks two (415) are fixedly installed on the square structure on the front and rear sides of each fixing plate (401) corresponding to the rotating shaft two; the distance between the two fixing blocks two (415) is equal to the width of the square structure; the grinding block (408) is pushed to move by the two clamping plates two (306).

4. The automated grinding equipment for valve stems according to claim 1, characterized in that: The base frame (5) is equipped with a transport mechanism (1); The transport mechanism (1) is provided with a transport sleeve (101) and a rotating shaft (102); the two rotating shafts (102) are rotatably mounted on the front and rear ends of the base frame (5) and driven by a motor (104) fixedly mounted on the base frame (5); the two rotating shafts (102) are connected by a chain (103); multiple transport sleeves (101) are fixedly mounted on the outside of the chain (103), and the multiple transport sleeves (101) are arranged in an upper and lower two-layer structure on the chain (103); in the initial state, the two grinding sleeves (410) are vertically placed corresponding to the upper and lower two-layer transport sleeves (101); two clamping plates (105) are elastically slidably mounted on the transport sleeves (101).

5. The automated grinding equipment for valve stems according to claim 4, characterized in that: A grinding plate (411) is slidably mounted on the base frame (5) and corresponds to the valve stem in the lower transport sleeve (101), and is driven by a motor fixedly mounted on the base frame (5).

Images