Valve copper core grinding device

Abstract

This invention discloses a valve copper core grinding device, including a processing table, a grinding table fixed to the top of the processing table, a robotic arm mounted on the top of the processing table, a grinding machine mounted at the end of the robotic arm, a water tank fixed to the top of the processing table, baffles fixed to both sides of the top of the grinding table, and a swinging chip-removing mechanism provided on the grinding table. The swinging chip-removing mechanism draws water from the water tank and blows away waste chips on the grinding table. This invention relates to the field of valve copper core processing technology. This valve copper core grinding device, through the swinging chip-removing mechanism, facilitates automatic water extraction from the water tank, enabling large-scale water spraying to clean the waste chips after grinding, replacing the manual cleaning operation by operators. It achieves continuous water rinsing and can change the direction of water spraying, requiring only a single geared motor drive. Compared to water pump rinsing for chip removal, it has lower operating costs and a novel structure.

Description

Technical Field

[0001] This invention relates to the field of valve copper core processing technology, specifically a valve copper core grinding device. Background Technology

[0002] To improve the sealing performance of valve copper cores, it is generally necessary to grind and refine their end faces using a grinding device. However, existing grinding devices generate a large amount of grinding debris after grinding the valves. This debris is usually manually cleaned by operators, increasing their workload. Sometimes it is cleaned by rinsing with water, but this usually requires a water pump, which has a relatively complex internal structure, high operating costs, and requires manual intervention. Before grinding, due to the irregular shape of the valve surface, ordinary fixing methods are not convenient for simultaneously and stably clamping multiple valves. During the grinding process, the valves tend to rotate with the grinding disc, affecting the grinding process. Therefore, this invention proposes a valve copper core grinding device to solve the above-mentioned problems. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a valve copper core grinding device, which solves the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a valve copper core grinding device, comprising a processing table, a grinding table fixed on the top of the processing table, a robotic arm mounted on the top of the processing table, a grinding machine mounted on the end of the robotic arm, a water tank fixed on the top of the processing table, baffles fixed on both sides of the top of the grinding table, a swinging chip-removing mechanism provided on the grinding table to extract water from the water tank and blow away waste chips on the grinding table, a clamping assembly also provided on the grinding table, the clamping assembly forming multi-point contact with the valve to achieve clamping and fixing, a water receiving box fixed in front of the grinding table, a conduit extending to the top of the water tank being connected to the bottom of the water receiving box, and a filter screen fixed on the inner wall of the water tank.

[0005] Preferably, the oscillating chip-removing mechanism includes a symmetrical folded tube fixed above the grinding table, with both ends of the symmetrical folded tube extending below the filter screen. Two symmetrically arranged horizontal tubes are connected to the inner surface of the symmetrical folded tube. A pull-pull piston is slidably installed on the inner wall of each of the two horizontal tubes. A drive unit is provided on the grinding table to control the reciprocating movement of the two pull-pull pistons. Upper retaining rings are fixed to both sides of the inner wall of the symmetrical folded tube, and upper caps are rotatably installed above each of the two upper retaining rings. Lower retaining rings are fixed to both sides of the inner wall of the symmetrical folded tube, and lower caps are rotatably installed above each of the two lower retaining rings. Anti-over-rotation rods are fixed above both the lower and upper retaining rings. A pressurized water outlet pipe is connected to the surface of the symmetrical folded tube, with a flexible hose connected to one end of the pressurized water outlet pipe, and a nozzle connected to the end of the flexible hose.

[0006] Preferably, the driving component includes a geared motor fixed below the grinding table, a drive shaft extending through to the top of the grinding table is fixed to one end of the output shaft of the geared motor, a drive disk is fixed to the surface of the drive shaft, a swing frame is rotatably mounted above the grinding table via a rotating shaft, a lever that works in conjunction with the swing frame is fixed to the top of the drive disk, pull rods are rotatably mounted on both sides of the top of the swing frame, connecting blocks are fixed to the inner sides of the two pull pistons, adjacent pull rods are rotatably connected to the connecting blocks, and a connecting assembly for controlling the back-and-forth swing of the nozzle is provided above the grinding table.

[0007] Preferably, the connecting assembly includes a drive gear fixed to the surface of the rotating shaft, a driven gear meshing with the drive gear is rotatably mounted above the grinding table via a rocker arm, a protrusion is fixed above the driven gear, and the nozzle is fixed on the protrusion.

[0008] Preferably, the fitting and clamping assembly includes hollow clamping seats slidably mounted on both sides of the top of the grinding table. Multiple clamping rods are slidably disposed through the inner sides of both hollow clamping seats. Each hollow clamping seat has three sets of clamping rods, arranged horizontally as one set. Three moving strips are slidably mounted on the inner wall of the hollow clamping seat. Adjacent moving strips are fixed together by connecting strips. Wavy teeth are fixed to the bottom of each moving strip. Wavy grooves matching the wavy teeth are formed on the surface of each clamping rod. A return spring is fixed between the clamping rod and the hollow clamping seat. Above the left hollow clamping seat... A folded hollow rod slides through the hollow clamping seat on the right side, and a folded insert rod that works with the folded hollow rod slides through the hollow clamping seat on the right side. The bottom end of the folded hollow rod is fixed to the top of the left moving bar via an inclined rod, and the bottom end of the folded insert rod is fixed to the top of the right moving bar. A rubber pad is fixed to the end of the clamping rod. An electric telescopic rod is fixed to the front of the hollow clamping seat on the left side. An extension strip is fixed to the surface of the folded hollow rod, and the top end of the electric telescopic rod is fixed to the bottom end of the extension strip. A power element for driving the two hollow clamping seats to move away from or towards each other is provided on the grinding table.

[0009] Preferably, the power element includes a central gear rotatably mounted below the grinding table, with drive bars rotatably mounted on both sides of the top of the central gear, drive blocks extending to the bottom of the grinding table fixed below the two hollow clamping seats, adjacent drive bars and drive blocks rotatably connected, and a drive cylinder fixed below the grinding table, with a rack meshing with the central gear fixed at one end of the drive cylinder.

[0010] Preferably, a through slot adapted to the drive block is provided above the grinding table.

[0011] Preferably, the diameter of the driving gear is larger than the diameter of the driven gear.

[0012] Beneficial effects

[0013] This invention provides a valve copper core grinding device. Compared with the prior art, it has the following advantages:

[0014] This valve copper core grinding device, through its swing-type chip-removing mechanism, facilitates the automatic extraction of water from the tank, enabling large-scale water spraying to clean the grinding debris. This replaces the manual cleaning of debris by operators, achieving continuous water flushing and allowing for changes in the direction of the water spray. It requires only a single geared motor for drive and is more cost-effective than using a water pump for chip removal. Its novel structure and the fitting clamping components allow for multi-point contact with the valve based on its shape, improving the stability of the valve after clamping. This prevents the valve from rotating with the grinding disc during grinding, ensuring the grinding process is not affected. Furthermore, it can simultaneously clamp and fix multiple valves, improving clamping efficiency. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of the present invention;

[0016] Figure 2 This is a perspective view of the grinding table structure of the present invention;

[0017] Figure 3 This is a perspective view of the structure of the swing-type chip-removing mechanism of the present invention;

[0018] Figure 4 For the present invention Figure 2 A magnified view of a section at point A in the middle;

[0019] Figure 5 This is a cross-sectional view of a partial structure of the symmetrical folded tube of the present invention;

[0020] Figure 6 For the present invention Figure 5 A magnified view of a section at point B in the middle;

[0021] Figure 7 This is a schematic diagram of the fitting and clamping assembly of the present invention;

[0022] Figure 8 This is a schematic diagram of the internal structure of the hollow clamping seat of the present invention;

[0023] Figure 9 For the present invention Figure 8 A magnified view of a section at point C.

[0024] In the diagram: 1-Machining table, 2-Grinding table, 3-Robot arm, 4-Grinding machine, 5-Water tank, 6-Baffle, 7-Swinging chip removal mechanism, 71-Symmetrical pipe bending, 72-Horizontal pipe, 73-Pull-out piston, 74-Drive component, 741-Gear motor, 742-Drive shaft, 743-Drive disc, 744-Rotating shaft, 745-Swing frame, 746-Lever, 747-Pull-out rod, 748-Connecting block, 749-Connecting assembly, 7491-Driving gear, 7492-Swing rod, 7493-Passive gear, 7494-Protrusion, 75-Upper retaining ring, 76-Upper cover, 77-Lower retaining ring, 78-Lower cover, 7 9-Anti-over-rotation rod, 710-Boosting water outlet pipe, 711-Hose, 712-Sprayer head, 8-Fitting clamping assembly, 81-Hollow clamping seat, 82-Clamping rod, 83-Power element, 831-Center gear, 832-Drive bar, 833-Drive block, 834-Drive cylinder, 835-Rack, 84-Moving bar, 85-Connecting bar, 86-Wave tooth, 87-Wave groove, 88-Reset spring, 89-Folded hollow rod, 810-Folded insertion rod, 811-Diagonal rod, 812-Rubber pad, 813-Electric telescopic rod, 814-Extension bar, 9-Water receiving box, 10-Conduit, 11-Filter screen. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0026] Please see Figures 1-9This invention provides a technical solution: a valve copper core grinding device, including a processing table 1, a grinding table 2 fixed on the top of the processing table 1, a robotic arm 3 mounted on the top of the processing table 1, and a grinding machine 4 mounted on the end of the robotic arm 3. Both the grinding machine 4 and the robotic arm 3 are existing technologies. The grinding machine 4 can perform grinding work by controlling the direction through the robotic arm 3. A water tank 5 containing water is fixed on the top of the processing table 1. Baffles 6 are fixed on both sides of the top of the grinding table 2 to block waste chips. A swinging chip-discharging mechanism 7 is provided on the grinding table 2 to extract water from the water tank 5 and discharge the waste chips. Waste chips on the grinding table 2 are blown away. The grinding table 2 is also equipped with a clamping assembly 8. The clamping assembly 8 forms multi-point contact with the valve to achieve clamping and fixation. A water collection box 9 is fixed in front of the grinding table 2. The grinding table 2 is designed to be slightly tilted forward so that the water can flow smoothly into the water collection box 9. The water collection box 9 is used to collect water containing waste chips. The height of the water collection box 9 is flush with the top of the grinding table 2. The bottom of the water collection box 9 is connected to a conduit 10 extending to the top of the water tank 5. A filter screen 11 is fixed on the inner wall of the water tank 5. It is fixed between the inner walls of the water tank 5 to filter the waste chips in the return water.

[0027] The oscillating chip-removing mechanism 7 includes a symmetrical bend tube 71 that is fixed above the grinding table 2. Both ends of the symmetrical bend tube 71 extend below the filter screen 11 and are inserted below the water surface. Two symmetrically arranged horizontal tubes 72 are connected to the inner surface of the symmetrical bend tube 71. A pull-pull piston 73 is slidably installed on the inner wall of each of the two horizontal tubes 72. The pull-pull piston 73 is made of rubber and has good sealing at its contact with the horizontal tubes 72, preventing air leakage. A drive component 74 is provided on the grinding table 2 to control the reciprocating movement of the two pull-pull pistons 73. Upper retaining rings 75 are fixed on both sides of the inner wall of the symmetrical bend tube 71. Upper sealing covers 76 are rotatably installed above each of the two upper retaining rings 75. When in a horizontal state, the upper sealing covers 76 can only be flipped upwards to seal or open the upper retaining rings 75. When closed, they provide good sealing with the upper retaining rings 75. Lower retaining rings 77 are fixed on both sides of the inner wall of the symmetrical bend tube 71. A lower cover 78 is rotatably installed above each of the 7. When in a horizontal state, the lower cover 78 can only be flipped upwards to block or open the lower retaining ring 77. When the lower cover 78 is closed, the seal between it and the lower retaining ring 77 is good. An anti-over-rotation rod 79 is fixed above both the lower retaining ring 77 and the upper retaining ring 75. The anti-over-rotation rod 79 is used to limit the lower cover 78 and the upper cover 76 to prevent them from flipping upwards too much and to prevent them from being affected during reset. A pressurized water outlet pipe 710 is connected to the surface of the symmetrical folded pipe 71. The pressurized water outlet pipe 710 adopts a design that is thinner at the top and thicker at the bottom, so that the water flow is pushed through the pressurized water outlet pipe 710 and discharged with greater pressure and faster flow rate. One end of the pressurized water outlet pipe 710 is connected to a hose 711. The hose 711 will not interfere with the normal operation of other components when the nozzle 712 swings back and forth. The end of the hose 711 is connected to the nozzle 712.

[0028] The driving component 74 includes a geared motor 741 fixed below the grinding table 2. The geared motor 741 is electrically connected to an external power supply and controlled by a control switch. One end of the output shaft of the geared motor 741 is fixed with a drive shaft 742 that extends through to the top of the grinding table 2. A drive disk 743 is fixed to the surface of the drive shaft 742. A swing frame 745 rotates on the top of the grinding table 2 via a rotating shaft 744. A lever 746 that works in conjunction with the swing frame 745 is fixed to the top of the drive disk 743. When the lever 746 rotates with the drive disk 743, it can drive the entire swing frame 745 to swing left and right. Pull-out rods 747 rotate on both sides of the top of the swing frame 745. When the pull-out rods 747 swing with the swing frame 745, they will drive two pull-out pistons 73 to move accordingly. The pull-out rods 747 will not touch the horizontal tube 72 during the movement. The pull-out rods 747 can move normally. The inner... Each side is fixed with a connecting block 748, and adjacent pull rods 747 are rotatably connected to the connecting block 748. A connecting component 749 is provided above the grinding table 2 to control the back-and-forth swing of the nozzle 712. The connecting component 749 includes a drive gear 7491 fixed on the surface of the rotating shaft 744. Above the grinding table 2, a driven gear 7493 meshes with the drive gear 7491 via a swing rod 7492. The diameter of the drive gear 7491 is larger than the diameter of the driven gear 7493. By utilizing the difference in diameter between the two gears, the drive gear 7491 can swing the driven gear 7493 at a large amplitude after a small amplitude swing, thereby increasing the swing range of the nozzle 712 and achieving a large-scale flushing of waste. A protrusion 7494 is fixed above the driven gear 7493, and the nozzle 712 is fixed on the protrusion 7494. The nozzle 712 is tilted downwards to achieve flushing of waste within the range.

[0029] The clamping assembly 8 includes hollow clamping seats 81 slidably mounted on both sides of the top of the grinding table 2. Multiple clamping rods 82 are slidably disposed through the inner sides of each hollow clamping seat 81. The end faces of the clamping rods 82 are flush, and the clamping rods 82 will not detach from the hollow clamping seat 8. Each hollow clamping seat 81 has three sets of clamping rods 82, arranged horizontally as one set. Three moving strips 84 are slidably mounted on the inner wall of the hollow clamping seat 81. The moving strips 84 slide up and down on the inner wall of the clamping seat 81. Adjacent moving strips 84 are fixed together by connecting strips 85. Wavy teeth 86 are fixed to the bottom of the moving strips 84. Wavy grooves 87, adapted to the wavy teeth 86, are formed on the surface of the clamping rods 82. The wavy teeth 86 and the wavy grooves 87 cooperate to lock the clamping rods 82. A return spring 88 is fixed between the clamping rods 82 and the hollow clamping seat 81.The return spring 88 facilitates the quick reset of the clamping rod 82. A folded hollow rod 89 slides through the upper part of the left hollow clamping seat 81, and a folded insert rod 810, which works in conjunction with the folded hollow rod 89, slides through the upper part of the right hollow clamping seat 81. The folded insert rod 810 is slidably mounted on the inner wall of the folded hollow rod 89. Through the arrangement of the folded hollow rod 89 and the folded insert rod 810, the moving bars 84 inside the two hollow clamping seats 81 can move synchronously. Thus, during the downward movement of the moving bars 84, the clamping rods 82 on the two hollow clamping seats 81 can be clamped. Synchronous locking: The bottom end of the folded hollow rod 89 is fixed to the upper part of the left moving bar 84 via the inclined rod 811; the bottom end of the folded insertion rod 810 is fixed to the upper part of the right moving bar 84; a rubber gasket 812 is fixed to the end of the clamping rod 82; the rubber gasket 812 protects the valve during clamping and increases friction; an electric telescopic rod 813 is fixed to the front of the left hollow clamping seat 81; the electric telescopic rod 813 is electrically connected to an external power source and controlled by a control switch; an extension strip 814 is fixed to the surface of the folded hollow rod 89; the electric... The top end of the telescopic rod 813 is fixed to the bottom end of the extension bar 814. A power element 83 is provided on the grinding table 2 to drive the two hollow clamping seats 81 to move away from or towards each other. The power element 83 includes a central gear 831 rotatably mounted below the grinding table 2. In actual manufacturing, the central gear 831 has a larger diameter, enabling significant movement of the two hollow clamping seats 81. Drive bars 832 rotate on both sides of the top of the central gear 831. Drive blocks 833 extending to the bottom of the grinding table 2 are fixed below each of the two hollow clamping seats 81. The central gear 831 rotates... When in motion, two drive bars 832 pull two drive blocks 833, thereby moving the two hollow clamping seats 81 closer together or further apart, allowing the clamping rod 82 to fit the shape of the valve. A through slot 12 adapted to the drive block 833 is provided above the grinding table 2. Adjacent drive bars 832 are rotatably connected to the drive block 833. A drive cylinder 834 is fixed below the grinding table 2. The drive cylinder 834 is electrically connected to an external power source and controlled by a control switch. One end of the drive cylinder 834 is fixed with a rack 835 that meshes with the central gear 831.

[0030] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0031] During operation, the valve is placed between two hollow clamping seats 81 on the grinding table 2. Then, the drive cylinder 834 is activated, and the drive cylinder 834 shortens, thereby driving the central gear 831 to rotate via the rack 835. This, in turn, drives the two drive blocks 833 via the two drive bars 832, bringing the two hollow clamping seats 81 closer together. The clamping rods 82 on both sides freely conform to the valve surface according to the valve shape. Then, the electric telescopic rod 813 is activated, which drives the folded hollow rod 89 and the folded insert rod 810 to move down synchronously, so that the moving bars 84 inside the two hollow clamping seats 81 move down synchronously. This causes the corresponding wave teeth 86 to engage in the wave grooves 87, thus positioning each clamping rod 82. Then, the drive cylinder 834 is activated again, and the drive cylinder 834 shortens, thereby driving the central gear 831 to rotate via the rack 835, thus achieving stable clamping of the valve.

[0032] After clamping, the robotic arm 3 is activated to move the grinding machine 4 to grind the copper core end face on the valve. Multiple valves can be clamped and ground simultaneously. After processing, the drive cylinder 834 is activated, extending and driving the central gear 831 to rotate in the opposite direction via the rack 835. This, in turn, drives the two drive blocks 833 via the two drive bars 832, thus moving the two hollow clamping seats 81 away from each other. At this point, the valve can be removed. When it is necessary to clean the debris on the grinding table, the reduction motor 741 is activated, driving the drive disc 743 to rotate. This, via the lever 746, causes the entire swing frame 745 to swing left and right, which in turn causes the two pull-out pistons 73 to move left and right via the two pull-out rods 747. When the swing frame 745 swings to the left, the right pull-out piston 73 moves to the left. At this time, under the action of negative pressure, the lower cover 78 on the right side flips up to achieve water suction. After the left pull-out piston moves to the left, the lower cover 78 on the left side is sealed. When the swing frame 745 swings to the right, the right pull-out piston 73 moves to the right side. 3. Move to the right. At this time, the lower cover 78 on the right side closes quickly, and the upper cover 76 on the right side opens, squeezing the pumped water outward. During the squeezing, the upper cover 76 on the left side is in a closed state. During this process, the left-side pull piston 73 moves to the right to realize the water pumping operation. Then, repeat the above operation so that the two pull pistons 73 move back and forth left and right continuously, thus realizing continuous water pumping until the symmetrical folded pipe 71 between the two upper fixed rings 75 is filled with water. The water flow is pressurized through the pressurized outlet pipe 710 and then flows through the hose. 711 enters the nozzle 712, enabling continuous water output from the nozzle 712. Simultaneously, when the rotating shaft 744 swings left and right, it drives the active gear 7491 to rotate back and forth, thereby enabling the passive gear 7493 to swing significantly. This allows the nozzle 712 to spray water over a wider range, achieving both continuous water output and comprehensive water spraying. The water flow washes away the grinding debris and sends it into the water collection box 9. Then, it flows through the conduit 10 into the water tank 5, where the debris is filtered by the filter screen 11, thus achieving water resource reuse.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve copper core grinding device, comprising a processing table (1), the top of the processing table (1) is fixed with a grinding table (2), the top of the processing table (1) is installed with a mechanical hand (3), the end of the mechanical hand (3) is installed with a grinder (4), characterized in that: A water tank (5) is fixed on the top of the processing table (1), and baffles (6) are fixed on both sides of the top of the grinding table (2). A swing chip-removing mechanism (7) is provided on the grinding table (2). The swing chip-removing mechanism (7) is used to extract water from the water tank (5) and blow away waste chips on the grinding table (2). A fitting clamping assembly (8) is also provided on the grinding table (2). The fitting clamping assembly (8) forms multi-point contact with the valve to achieve clamping and fixing. A water receiving box (9) is fixed in front of the grinding table (2). A conduit (10) extending to the top of the water tank (5) is connected to the bottom of the water receiving box (9). A filter screen (11) is fixed on the inner wall of the water tank (5). The oscillating chip removal mechanism (7) includes a symmetrical folded tube (71) that is fixed above the grinding table (2). Both ends of the symmetrical folded tube (71) extend below the filter screen (11). The inner surface of the symmetrical folded tube (71) is connected to two symmetrically arranged horizontal tubes (72). The inner walls of the two horizontal tubes (72) are slidably fitted with pull-pull pistons (73). The grinding table (2) is provided with a drive (74) that controls the back-and-forth movement of the two pull-pull pistons (73). Upper retaining rings (75) are fixed on both sides of the inner wall of the symmetrical folded tube (71). An upper cover (76) is rotatably installed above each of the upper fixed rings (75). Lower fixed rings (77) are fixed on both sides of the inner wall of the symmetrical folded pipe (71). Lower cover (78) is rotatably installed above each of the two lower fixed rings (77). Anti-over-rotation rods (79) are fixed above both the lower fixed rings (77) and the upper fixed rings (75). A pressurized water outlet pipe (710) is connected to the surface of the symmetrical folded pipe (71). A hose (711) is connected to one end of the pressurized water outlet pipe (710). A nozzle (712) is connected to the end of the hose (711). The drive unit (74) includes a geared motor (741) fixed below the grinding table (2). One end of the output shaft of the geared motor (741) is fixed with a drive shaft (742) that extends through to the top of the grinding table (2). A drive disk (743) is fixed on the surface of the drive shaft (742). A swing frame (745) is rotatably mounted above the grinding table (2) via a rotating shaft (744). A lever (746) that works in conjunction with the swing frame (745) is fixed on the top of the drive disk (743). Pull rods (747) are rotatably mounted on both sides of the top of the swing frame (745). Connecting blocks (748) are fixed on the inner sides of the two pull pistons (73). Adjacent pull rods (747) are rotatably connected to the connecting blocks (748). A connecting assembly (749) that controls the back-and-forth swing of the nozzle (712) is provided above the grinding table (2). The connecting assembly (749) includes a drive gear (7491) fixed on the surface of the rotating shaft (744), and a driven gear (7493) meshing with the drive gear (7491) is rotatably mounted above the grinding table (2) via a rocker arm (7492). A protrusion (7494) is fixed above the driven gear (7493), and the nozzle (712) is fixed on the protrusion (7494).

2. The valve copper core grinding device according to claim 1, characterized in that: The fitting clamping assembly (8) includes hollow clamping seats (81) slidably mounted on both sides of the top of the grinding table (2). Multiple clamping rods (82) are slidably provided through the inner side of each of the two hollow clamping seats (81). Each hollow clamping seat (81) is provided with three sets of clamping rods (82), arranged in a horizontal direction. Three moving strips (84) are slidably mounted on the inner wall of the hollow clamping seat (81). Adjacent moving strips (84) are fixed together by connecting strips (85). The bottom of the moving strips (84) is fixed with wave teeth (86). The surface of the clamping rods (82) is provided with wave grooves (87) that are adapted to the wave teeth (86). A return spring (88) is fixed between the clamping rods (82) and the hollow clamping seat (81). A folding spring is slidably provided through the upper part of the left hollow clamping seat (81). A hollow rod (89) is provided, and a folded insert rod (810) for use with the hollow rod (89) slides through the hollow clamping seat (81) on the right side. The bottom end of the folded hollow rod (89) is fixed to the top of the left moving bar (84) by a diagonal rod (811). The bottom end of the folded insert rod (810) is fixed to the top of the right moving bar (84). A rubber pad (812) is fixed to the end of the clamping rod (82). An electric telescopic rod (813) is fixed to the front of the hollow clamping seat (81) on the left side. An extension strip (814) is fixed to the surface of the folded hollow rod (89). The top end of the electric telescopic rod (813) is fixed to the bottom of the extension strip (814). A power element (83) for driving the two hollow clamping seats (81) to move away from or closer to each other is provided on the grinding table (2).

3. The valve copper core grinding device according to claim 2, characterized in that: The power element (83) includes a central gear (831) rotatably mounted below the grinding table (2), with drive bars (832) rotatably mounted on both sides of the top of the central gear (831), and drive blocks (833) extending to the bottom of the grinding table (2) fixed below the two hollow clamping seats (81). Adjacent drive bars (832) are rotatably connected to drive blocks (833). A drive cylinder (834) is fixed below the grinding table (2), and a rack (835) meshing with the central gear (831) is fixed at one end of the drive cylinder (834).

4. The valve copper core grinding device according to claim 3, characterized in that: The grinding table (2) has a through slot (12) that is adapted to the drive block (833) on its upper part.

5. A valve copper core grinding device according to claim 1, characterized in that: The diameter of the driving gear (7491) is larger than the diameter of the driven gear (7493).

Images