Valve head polishing machine

Abstract

The utility model discloses a valve head polisher which comprises a machine frame, a main shaft device, a feeding mechanism and a discharging conveying device, a polishing wheel is further arranged on the machine frame, the polishing wheel is supported on the machine frame through a polishing wheel shaft device, a polishing wheel feed mechanism and a polishing wheel feed mechanism, and a polishing wheel trimming device is arranged on one side of the polishing wheel. A feeding mechanism is arranged below the discharging end of the feeding mechanism, the feeding mechanism comprises a valve rod receiving block and a valve head receiving block which are arranged on a feeding support at intervals, the valve head receiving block can swing up and down, and a valve suction cup loading mechanism is arranged at the front end of the main shaft device. And the valve sucking disc charging mechanism comprises a sucking disc jacking block which is driven by a charging jacking air cylinder and is provided with an air suction concave cavity at the outer side end. By the adoption of the valve head polishing machine, automatic polishing of the head of a ground valve can be completed, the feeding and clamping time can be shortened, and impact generated when the valve falls into an output conveying device can be relieved when the valve is polished and discharged.

Description

Technical Field

[0001] The utility model relates to a mechanical processing device, in particular to a polishing device used for removing sharp edges after grinding of valves. Background Art

[0002] Valve grinding is a necessary process in valve manufacturing, and under normal circumstances, the grinding process is usually the last process in valve machining. With the continuous improvement of product quality requirements, after the valve head is ground, some sharp edge burrs that may be generated on the edge of the grinding surface are required to be polished, but there is no relevant automatic equipment dedicated to valve polishing. The existing valve grinder can be used to replace the grinding wheel on it with a polishing wheel to complete the polishing process, but its loading process and the unloading of the valve after the processing are completed are completed by two sets of mechanisms. The loading cylinder is used to push the valve, and the discharging cylinder is used to push the valve out of the chuck of the main shaft and drop it into the discharging conveying device. The valve is ejected at a high speed, which is easy to cause bumps and damage to the valve, and the loading process is also very complicated. Two sets of mechanisms are required for feeding and discharging; in addition, the valve to be ground on the valve grinder is output from the output end of the feeding mechanism through the V-shaped holding block and the clamping piece to the loading position at the front end of the spindle. After the loading mechanism completes the loading action and the valve enters the chuck, the feeding mechanism needs to move downward a certain distance to separate the V-shaped holding block from the valve, and then it can exit and return to the output end of the feeding mechanism. This process requires the feeding mechanism to exit the loading position before the grinding process can begin, resulting in a long feeding and clamping process and relatively low production efficiency. In addition, a set of downward transmission devices for the feeding mechanism is required, and the structure is complicated. Therefore, there is also a need for improvement in the valve polishing equipment. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a valve head polishing machine, which can complete the automatic polishing of the valve head after grinding, shorten the feeding and clamping time, and reduce the impact when the valve falls into the output conveying device when the polishing is completed and the material is discharged.

[0004] In order to solve the above technical problems, the utility model provides a valve head polishing machine, comprising a frame, a spindle device installed on the frame, a feeding mechanism and a discharging conveying device, wherein a polishing wheel is also arranged on the frame, and the polishing wheel is supported on the frame through a polishing wheel shaft device and a polishing wheel feed mechanism and a polishing wheel feeding mechanism, and a polishing wheel dressing device is arranged on one side of the polishing wheel; the feeding mechanism is located on one side of the front end of the spindle device, and a feeding mechanism is arranged below the discharging end of the feeding mechanism, and the feeding mechanism comprises a feeding bracket installed on the frame, and a valve head receiving block and a valve stem receiving block are arranged at intervals on the feeding bracket, and the valve stem receiving block comprises a V-shaped receiving portion, the valve stem receiving block is hinged on the stem receiving block support rod, and its hinge axis is parallel to the V-groove of the V-shaped receiving portion, and a return spring is arranged between the valve stem receiving block and the stem receiving block support rod, The block and the rod receiving block support rod are synchronously driven by the feeding cylinder to perform feeding movement along the radial direction of the connected valve. The feeding cylinder is installed on the feeding bracket, and the axis of the valve to be polished delivered by the feeding mechanism is located on the axis of the main shaft device; a valve suction cup loading mechanism is provided at the front end of the main shaft device, and the valve suction cup loading mechanism comprises a loading top feeding cylinder, a top feeding support is installed at the piston rod end of the loading top feeding cylinder, a suction cup top block is provided on the top feeding support, and an air suction cavity is provided on the outer end surface of the suction cup top block, and the air suction cavity is connected to the negative pressure air source; a guide support is provided on the top feeding support, and the piston rod end of the loading top feeding cylinder is movably supported on the loading support through the guide support; the cylinder body of the loading top feeding cylinder is supported on the loading support so as to be movably supported forward and backward by the top block retreat cylinder, the suction cup top block is opposite to the main shaft hole of the main shaft device, and the movement path of the suction cup top block is parallel to the axis of the main shaft device.

[0005] In the above structure, since a polishing wheel is also provided on the frame, the polishing wheel is supported on the frame through a polishing wheel shaft device and a polishing wheel feed mechanism and a polishing wheel walking mechanism, and a polishing wheel dressing device is provided on one side of the polishing wheel; the feeding mechanism is located on the front end side of the spindle device, then: the polishing wheel is rotated with the polishing wheel spindle and can realize feed and walking movements, and can automatically polish the valve rotating with the spindle device, the polishing wheel dressing device provided on one side of the polishing wheel can realize the grinding and dressing of the polishing wheel to maintain the performance of the polishing wheel, and the feeding mechanism is located on the side of the spindle device, which can facilitate the feeding operation of the valve to be polished.

[0006] Since a feeding mechanism is provided below the discharge end of the feed mechanism, the feeding mechanism comprises a feeding bracket mounted on a frame, on which a valve head receiving block and a valve stem receiving block are arranged at intervals, the valve stem receiving block comprises a V-shaped receiving portion, the valve stem receiving block is hinged on a stem receiving block support rod, and its hinge axis is parallel to the V-groove of the V-shaped receiving portion, a return spring is provided between the valve stem receiving block and the stem receiving block support rod, the valve head receiving block and the stem receiving block support rod are synchronously driven by a feeding cylinder to perform feeding movement along the radial direction of the connected valve, and the feeding cylinder is mounted on the feeding bracket. , the axis of the valve to be polished delivered by the feeding mechanism is located on the axis of the spindle device, then: the valve head receiving block and the valve stem receiving block arranged at intervals on the feeding bracket will respectively receive the head and stem of the valve output from the output end of the feeding mechanism at the receiving position, and the valve will be synchronously driven by the feeding cylinder to deliver the valve along the radial direction of the connected valve to the feeding position (i.e. the loading position) at the front end of the spindle device of the valve polishing equipment. The V-shaped receiving portion on the valve stem receiving block keeps the valve in a certain center position, which can ensure that the valve axis is coaxial with the axis of the spindle hole on the spindle device, so that the loading mechanism can push the valve to the spindle The valve stem receiving block is clamped in the valve chuck of the hole. During this process, the valve stem receiving block will always hold the valve stem to ensure the stable feeding process. After the valve stem enters the valve chuck, the head of the valve is located between the valve head receiving block and the valve stem receiving block which are arranged at intervals, and is out of contact with the valve head receiving block. Since the valve stem receiving block is hinged on the stem receiving block support rod, its hinge axis is parallel to the V-groove of the V-shaped receiving part. The valve stem receiving block maintains the feeding working position through the return spring provided between it and the stem receiving block support rod. After the loading process is completed, the valve head receiving block The valve stem receiving block can directly return from the feeding position to the receiving position through the retreat of the feeding cylinder. At this time, the retreating valve stem receiving block will generate a downward component force through the side of the V-groove of the V-shaped receiving part under the restriction of the valve stem and overcome the tension of the return spring to swing downward along the hinge axis between the rod receiving block support rod. The V-groove side of the V-shaped receiving part of the valve stem receiving block slides over the surface of the valve stem and is separated from the valve stem. In this way, the feeding mechanism can separate the valve head receiving block and the valve stem receiving block from the valve being fed without going down, shortening the feeding clamping time, and the structure is simple and reliable. After the valve stem receiving block slides over the valve stem, the valve stem receiving block will return to the feeding working position under the action of the return spring and wait for the next feeding process.

[0007] Also, because a valve suction cup loading mechanism is provided at the front end of the main shaft device, the valve suction cup loading mechanism includes a loading top-feeding cylinder, a top-feeding support is installed at the piston rod end of the loading top-feeding cylinder, a suction cup top block is provided on the top-feeding support, and an air suction cavity is provided on the outer end surface of the suction cup top block, and the air suction cavity is communicated with the negative pressure air source; a guide support is provided on the top-feeding support, and the piston rod end of the loading top-feeding cylinder is movably supported on the loading support through the guide support; the cylinder body of the loading top-feeding cylinder is supported on the loading cylinder movably forward and backward through the top block retreat cylinder On the material support, the suction cup top block is opposite to the main shaft hole of the main shaft device, and the movement path of the suction cup top block is parallel to the axis of the main shaft device. Therefore, the valve to be loaded that is transported to the front end of the main shaft device by the feeding mechanism can be pushed into the chuck in the main shaft device of the valve processing equipment by the suction cup top block against the end face of the valve head by the loading top cylinder to complete the loading action, and can also be sucked by the suction cavity on the suction cup top block that is connected to the negative pressure air source to hold the end face of the valve head, and after the valve processing is completed, the loading top cylinder runs in the reverse direction to take it out of the chuck of the main shaft device. When the force of the valve's own weight is greater than the negative pressure in the suction cavity on the suction cup top block, the valve will overcome the negative pressure in the suction cavity and slowly fall into the discharge conveying device of the valve processing equipment, thus avoiding the impact damage caused by the rapid fall into the discharge conveying device caused by the discharge cylinder in the conventional discharge method, and also eliminating the discharge cylinder and related parts, thus saving equipment costs while ensuring that the polished valve is not damaged by collision; the cylinder body of the charging and feeding cylinder is supported on the charging material by the top block to allow the cylinder to move forward and backward. The support makes it unnecessary to reverse the piston rod of the loading and pushing cylinder after completing the loading and pushing operation. Instead, the piston rod of the top block retreat cylinder drives the loading and pushing cylinder to retreat, so that the suction cup top block retreats a short distance and avoids the valve polishing operation area, shortening the retreat stroke of the suction cup top block. After the valve processing is completed, the top block retreat cylinder retreats so that the suction cup top block can contact the valve to be discharged with a smaller stroke and suck the valve, and the loading and pushing cylinder reverses to take out the valve, saving the time required for loading and unloading and improving the processing efficiency.

[0008] In a preferred embodiment of the utility model, a polishing wheel angle adjustment mechanism is provided between the polishing wheel feeding mechanism and the frame. With this embodiment, the angle position between the polishing working surface of the polishing wheel and the polished valve can be conveniently changed, thereby meeting the polishing requirements of valves of different specifications.

[0009] In another preferred embodiment of the utility model, the polishing wheel is a UB polishing wheel, and the polishing wheel dressing device is a dressing device using a diamond dressing pen. In this embodiment, the UB polishing wheel, which is formed into a desired shape by mixing, pressing, and heat-sealing with a variety of abrasives using PVA resin fiber and thermosetting resin as bonding media, has the characteristics of a flexible base, high elasticity, good buffering performance, no new wear marks, and strong polishing ability, and can well meet the polishing requirements of the valve after grinding. The polishing wheel dressing device using a diamond dressing pen can dress and sharpen the UB polishing wheel to maintain the performance of the UB polishing wheel.

[0010] In another preferred embodiment of the utility model, the material receiving portion of the valve head material receiving block is V-shaped. With this embodiment, the V-shaped material receiving portion of the valve head material receiving block can keep the valve head at a certain center position, so that the axial position of the valve is more certain, and the stability and reliability of the loading process are better.

[0011] According to a further preferred embodiment of the utility model, a material receiving support is installed at the piston rod end of the feeding cylinder, a feeding position adjustment limit piece is provided between the material receiving support and the feeding bracket, the material receiving support is located above the feeding cylinder, the feeding cylinder is a double-axis cylinder, a guide connecting piece is provided between the double-axis cylinder and the material receiving support, the rod portion material receiving block support rod can be fixedly connected to the material receiving support in an axial direction of the connected valve, and the valve head material receiving block can be fixedly connected to the material receiving support in an up and down direction. By adopting this implementation mode, the material receiving support can conveniently ensure that the valve head material receiving block and the rod material receiving block support rod are synchronously driven by the feeding cylinder to perform feeding movement along the radial direction of the connected valve; the feeding position adjustment limiter provided between the material receiving support and the feeding bracket can accurately adjust the final position of the delivered valve to ensure that it is coaxial with the axis of the main shaft device; the material receiving support is located above the feeding cylinder so that the structure between the material receiving support and the feeding cylinder is compact; the provided guiding connecting member can ensure the accuracy and stability of the operating state of the material receiving support, and can adjust the upper and lower positions of the valve head material receiving block to ensure that the axis of the valve head determined by the valve head material receiving block and the axis of the valve stem determined by the V-shaped material receiving portion on the valve stem material receiving block are in a horizontal state; and the position of the rod material receiving block support rod can be adjusted to meet the feeding requirements of valves of different lengths.

[0012] In another further preferred embodiment of the utility model, the feeding cylinder is fixedly connected to the cylinder seat, and the cylinder seat is installed on the feeding bracket through a cylinder seat guide rod, the axis of the cylinder seat guide rod is perpendicular to the running direction of the feeding cylinder piston rod, a cylinder seat adjustment screw is provided between the cylinder seat and the feeding bracket, and a cylinder seat locking screw is provided between the cylinder seat and the cylinder seat guide rod. With this embodiment, the material receiving support installed at the end of the feeding cylinder piston rod can change the installation position along the axial direction of the connected valve through the cylinder seat, thereby adapting to the feeding requirements of valves of different specifications.

[0013] In another preferred embodiment of the utility model, an elastic holding ring is provided on the outer periphery of the suction cavity, and the outer end of the elastic holding ring protrudes from the outer end surface of the suction cup top block. With this embodiment, the elastic holding ring protruding from the outer end surface of the suction cup top block will facilitate the contact and sealing with the end surface of the valve head, and a good holding effect can be formed under the action of negative pressure, thereby ensuring the working stability of the suction cup top block.

[0014] In a further preferred embodiment of the utility model, the guide support is a guide rod fixedly connected to the top delivery support, the guide rod is movably supported on the guide groove seat, and the guide groove seat is fixedly connected to the loading support. With this embodiment, the guide rod fixedly connected to the top delivery support as a guide support moves forward and backward under the limiting guiding action of the guide groove on the guide groove seat, which not only ensures that the top delivery support installed on the piston rod of the loading top delivery cylinder has a certain forward and backward moving position accuracy and will not shake or shift up and down or left and right, but also helps the loading top delivery cylinder maintain working stability and reliability.

[0015] Another further preferred embodiment of the utility model is that the cylinder body of the loading top delivery cylinder is connected to the piston rod end of the top block retreat cylinder, the top block retreat cylinder is a cylinder with a guide rod, and the cylinder body of the top block retreat cylinder is movably mounted on the loading support through a position adjustment seat, and the loading support is mounted on the spindle device. With this embodiment, it can be ensured that the loading top delivery cylinder is supported on the loading support by the top block retreat cylinder so that it can be movably supported forward and backward. The top block retreat cylinder with a guide rod can ensure the stable movement of the loading top delivery cylinder. The top block retreat cylinder can adjust the front and rear position through the position adjustment seat, so that the working position of the loading top delivery cylinder can be changed accordingly, which is more convenient to adapt to the loading position requirements of valves of different specifications.

[0016] In another further preferred embodiment of the utility model, the position adjustment seat is supported on the charging support by two guide rods, a position adjustment screw is provided between the position adjustment seat and the charging support, and a position locking screw is provided between the position adjustment seat and the guide rod. With this embodiment, the position adjustment seat supported on the charging support by two guide rods can ensure the stability of its support for the top block retreat cylinder, and the provided position adjustment screw can accurately adjust the front and rear positions of the position adjustment seat to ensure the charging position requirements for valves of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The valve head polishing machine of the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1 It is a structural schematic diagram of a specific implementation method of the valve head polishing machine of the utility model;

[0019] Figure 2 yes Figure 1 A schematic diagram of the structure from a rear side perspective of the structure shown;

[0020] Figure 3 yes Figure 1 A schematic diagram of the structure of the feeding mechanism in the structure shown;

[0021] Figure 4 yes Figure 3 a top view of the structure shown;

[0022] Figure 5 yes Figure 4 A cross-sectional view of the AA portion of the structure shown;

[0023] Figure 6 yes Figure 4 A cross-sectional view of the BB portion of the structure shown;

[0024] Figure 7 yes Figure 1 A schematic diagram of the structure of the valve suction cup loading mechanism in the structure shown;

[0025] Figure 8 yes Figure 7 The structure shown is a side view of the end where the top delivery support is located;

[0026] Fig. 9 yes Figure 8 Cross-sectional view of the CC portion of the structure shown.

[0027] In the figure: 1-frame, 2-discharging conveying device, 3-feeding mechanism, 31-feeding bracket, 32-cylinder seat guide rod, 33-cylinder seat adjusting screw, 34-cylinder seat locking screw, 35-cylinder seat, 36-guide connecting piece, 37-feeding cylinder, 38-feeding position adjustment limiter, 39-receiving support, 310-rod receiving block support rod, 311-valve rod receiving block, 312-valve head receiving block, 313-V-shaped receiving part, 314-reset spring, 4-polishing wheel shaft device, 5-valve suction cup loading mechanism, 5 1-top delivery support, 52-suction cup top block, 53-guide support, 54-loading top delivery cylinder, 55-guide groove seat, 56-loading support, 57-top block retreat cylinder, 58-position locking screw, 59-position adjustment seat, 510-position adjustment screw, 511-guide support rod, 512-elastic suction ring, 513-suction cavity, 6-spindle device, 7-feeding mechanism, 8-polishing wheel feeding mechanism, 9-polishing wheel angle adjustment mechanism, 10-polishing wheel feeding mechanism, 11-polishing wheel dressing device, 12-polishing wheel. DETAILED DESCRIPTION

[0028] exist Figure 1 and Figure 2In the valve head polishing machine shown in the figure, the frame 1 is the basic supporting member of the polishing machine, and a spindle device 6, a feeding mechanism 7 and a discharging conveying device 2 are installed on the frame 1. The feeding mechanism 7 is located at one side of the front end of the spindle device 6, and the discharging conveying device 2 is located at the end opposite to the spindle device 6. The spindle device 6, the feeding mechanism 7 and the discharging conveying device 2 can all adopt the corresponding structures in the conventional valve grinder. A polishing wheel 12 is also provided on the frame 1. The polishing wheel 12 is supported on the frame 1 through a polishing wheel shaft device 4 and a polishing wheel feed mechanism 10 and a polishing wheel feed mechanism 8. A polishing wheel angle adjustment mechanism 9 may preferably be provided between the frames 1; the polishing wheel shaft device 4 is a device for installing and supporting the polishing wheel 12 and driving the polishing wheel 12 to rotate, and its structure may be similar to that of a conventional grinding wheel spindle device; the structures of the polishing wheel feed mechanism 10, the polishing wheel moving mechanism 8 and the polishing wheel angle adjustment mechanism 9 may adopt the corresponding structures for driving the grinding wheel feed, moving and angle adjustment in a conventional valve grinder; the polishing wheel 12 preferably adopts a UB polishing wheel, and a polishing wheel dressing device 11 is provided on one side of the polishing wheel 12, and the polishing wheel dressing device 11 is preferably a dressing device using a diamond dressing pen.

[0029] A feeding mechanism 3 is provided below the discharge end of the feeding mechanism 7, see Figure 3 and Figure 4 The feeding mechanism 3 includes a feeding bracket 31 installed on the frame 1, and a valve head receiving block 312 and a valve stem receiving block 311 are arranged on the feeding bracket 31 at intervals. The valve stem receiving block 311 includes a V-shaped receiving portion 313, and the V-shaped receiving portion 313 is located at the front end of the valve stem receiving block 311. The rear end of the valve stem receiving block 311 is hinged to the stem receiving block support rod 310, and its hinge axis is parallel to the V-shaped groove of the V-shaped receiving portion 313, see Figure 5A return spring 314 is provided between the valve stem connecting block 311 and the stem connecting block support rod 310. The return spring 314 is preferably a torsion spring. The return spring 314 keeps the valve stem connecting block 311 in a horizontal position, and the valve stem connecting block 311 can swing downward to overcome the elastic force of the torsion spring. The rod connecting block support rod 310 is fixedly connected to the connecting support 39 by a fastening screw passing through the rod connecting block support rod 310. The fastening screw hole on the rod connecting block support rod 310 is a long strip hole parallel to the V-groove of the V-shaped connecting portion 313, so that the rod connecting block support rod 310 can adjust the installation position along the axial direction of the connected valve; the connecting portion of the valve head connecting block 312 is V-shaped, and the V-shaped connecting portion is in the same direction as the V-groove of the V-shaped connecting portion 313 on the valve stem connecting block 311. The valve head connecting block 312 can be adjusted and fixedly connected to the connecting support 39 in the up and down directions through the convex tenon and the mortise and tenon groove vertically arranged between the connecting support 39, so that the rod connecting block support rod 310 and the valve head connecting block 312 The material receiving support 39 is installed on the material receiving support 39, and the material receiving support 39 is installed on the piston rod end of the feeding cylinder 37. The valve head material receiving block 312 and the rod material receiving block support rod 310 are synchronously driven by the feeding cylinder 37 through the material receiving support 39 to perform feeding movement along the radial direction of the connected valve; as a preferred embodiment, the material receiving support 39 is located above the feeding cylinder 37, and the feeding cylinder 37 is a double-axis cylinder. A guide connecting member 36 is provided between the double-axis cylinder and the material receiving support 39. The guide connecting member 36 can simply adopt a guide flat key, which is fixedly connected to the cylinder body of the feeding cylinder 37, and the material receiving support 39 is slidably connected to the guide flat key through the keyway thereon; the feeding cylinder 37 is installed on the feeding bracket 31, as a preferred embodiment, see Figure 6The feeding cylinder 37 is fixedly connected to the cylinder seat 35. The cylinder seat 35 is installed on the feeding bracket 31 through two cylinder seat guide rods 32. The axis of the cylinder seat guide rod 32 is perpendicular to the running direction of the piston rod of the feeding cylinder 37. A cylinder seat adjusting screw 33 is provided between the cylinder seat 35 and the feeding bracket 31. The cylinder seat adjusting screw 33 is rotatably supported on the feeding bracket 31 and screwed to the cylinder seat 35. By rotating the cylinder seat adjusting screw 33, the installation position of the cylinder seat 35 can be conveniently adjusted along the axial direction of the connected valve. A cylinder seat locking screw 34 is provided between the cylinder seat 35 and the cylinder seat guide rod 32. After the position adjustment of the cylinder seat 35 is completed, the cylinder seat locking screw 34 screwed on the cylinder seat 35 is screwed in. 4 is screwed to hold the cylinder seat guide rod 32 to lock the position of the cylinder seat 35; the axis of the valve to be polished delivered by the material receiving support 39 driven by the material feeding cylinder 37 of the feeding mechanism 3 is located on the axis of the main shaft device 6, and a feeding position adjustment limiter 38 is provided between the material receiving support 39 and the feeding support 31. The feeding position adjustment limiter 38 includes an adjustment screw screwed on the feeding support 31, and a limit stopper corresponding to the adjustment screw is provided on the material receiving support 39. When the material feeding cylinder 37 drives the material receiving support 39 to feed forward, the limit stopper thereon contacts with the adjustment screw to determine the final position of feeding, and the final position makes the axis of the valve to be fed coaxial with the axis of the main shaft.

[0030] A valve suction cup loading mechanism 5 is provided at the front end of the spindle device 6. Figure 7 and Figure 8 The valve suction cup loading mechanism 5 comprises a loading and pushing cylinder 54. The loading and pushing cylinder 54 is a pen-shaped cylinder. A pushing support 51 is installed at the piston rod end of the loading and pushing cylinder 54. A suction cup push block 52 is arranged on the push support 51. The outer end surface of the suction cup push block 52 is opposite to the spindle hole of the spindle device 6. When the piston rod of the loading and pushing cylinder 54 is extended outward, the space between the suction cup push block 52 and the spindle device 6 is the feeding position of the feeding mechanism 3. When loading, the piston rod of the loading and pushing cylinder 54 retreats, and the suction cup push block 52 pushes the end surface of the head of the loaded valve to push the valve into the valve chuck in the spindle hole of the spindle device 6. The movement path of the suction cup push block 52 is parallel to the axis of the spindle device 6. See Fig. 9 The outer end surface of the suction cup top block 52 is provided with an air suction cavity 513, which is connected to the negative pressure gas source through the vent hole on the suction cup top block 52. An elastic suction ring 512 is provided on the outer periphery of the suction cavity 513, and the outer end of the elastic suction ring 512 protrudes from the outer end surface of the suction cup top block 52. The elastic suction ring 512 is preferably as follows Fig. 9The annular member made of wear-resistant rubber shown is fixedly connected to the suction cup top block 52 through a pressure ring screwed with the suction cup top block 52, and the elastic holding ring 512 can also simply adopt an O-ring embedded in the outer end surface of the suction cup top block 2. A guide support 53 is provided on the top delivery support 51. The guide support 53 is preferably fixedly connected to the guide rod between the upper and lower parts of the top delivery support 51 by screws. The guide rod is movably supported on the guide groove seat 55, and the guide groove seat 55 is fixedly connected to the loading support 56, so that the piston rod end of the loading top delivery cylinder 54 is movably supported on the loading support 56 through the guide support 53. Of course, the guide support 53 can also be a guide sleeve fixedly connected to the top delivery support 51, and the guide sleeve is movably supported on the guide rod, and the guide rod is fixedly connected to the loading support 56; the cylinder body of the loading top delivery cylinder 54 is supported on the loading support 56 by the top block retreat cylinder 57 so that it can move forward and backward. As a preferred embodiment, the loading support 56 is mounted on the spindle device 6, the rear end of the cylinder body of the loading top delivery cylinder 54 is connected to the piston rod end of the top block retreat cylinder 57, the top block retreat cylinder 57 is a cylinder with a guide rod, and the cylinder body of the top block retreat cylinder 57 is mounted on the loading support 56. Further, the cylinder body of the top block retreat cylinder 57 is movably mounted on the loading support 56 through a position adjustment seat 59, and two guide support rods 511 are fixedly connected to the loading support 56. The position adjustment seat 59 can be movably inserted on the two guide support rods 511 along the guide support rods 511, so that the position adjustment seat 59 is supported on the loading support 56 through the two guide support rods 511. On the material support 56, a position adjusting screw 510 is provided between the position adjusting seat 59 and the loading support 56. The position adjusting screw 510 is rotatably supported on the loading support 56 and is screwed to the position adjusting seat 59. By rotating the position adjusting screw 510, the position adjusting seat 59 and the top block supported by it can be moved back and forth relative to the loading support 56 to meet the loading requirements of valves with different length specifications. A position locking screw 58 is provided between the position adjusting seat 59 and the guide support rod 511. The position locking screw 58 is screwed on the position adjusting seat 59 to support the guide support rod 511, so as to lock the determined position of the position adjusting seat 59.

[0031] The above only lists some preferred embodiments of the present invention, but the present invention is not limited thereto, and many improvements and changes can be made. As long as the improvements and changes are made on the basis of the basic principles of the present invention, they should be regarded as falling within the scope of protection of the present invention.

Claims

1. A valve head polishing machine, comprising a frame (1), a spindle device (6) mounted on the frame (1), a feeding mechanism (7) and a discharging conveying device (2), characterized in that: The frame (1) is also provided with a polishing wheel (12), the polishing wheel (12) being supported on the frame (1) via a polishing wheel shaft device (4) and a polishing wheel feed mechanism (10) and a polishing wheel feed mechanism (8), and a polishing wheel dressing device (11) is provided on one side of the polishing wheel (12); the feeding mechanism (7) is located on one side of the front end of the spindle device (6), a feeding mechanism (3) is provided below the discharge end of the feeding mechanism (7), the feeding mechanism (3) comprising a feeding bracket (31) mounted on the frame (1), A valve head material receiving block (312) and a valve stem material receiving block (311) are provided in intervals. The valve stem material receiving block (311) includes a V-shaped material receiving portion (313). The valve stem material receiving block (311) is hinged on the stem material receiving block support rod (310). The hinge axis is parallel to the V-shaped groove of the V-shaped material receiving portion (313). A return spring (314) is provided between the valve stem material receiving block (311) and the stem material receiving block support rod (310). The valve head material receiving block (312) and the stem material receiving block support rod (310) are synchronously driven by a feeding cylinder (37) to move along the The connected valve is subjected to radial feeding movement, the feeding cylinder (37) is mounted on the feeding bracket (31), and the axis of the valve to be polished delivered by the feeding mechanism (3) is located on the axis of the main shaft device (6); a valve suction cup loading mechanism (5) is provided at the front end of the main shaft device (6), and the valve suction cup loading mechanism (5) comprises a loading top feeding cylinder (54), a top feeding support (51) is installed at the piston rod end of the loading top feeding cylinder (54), a suction cup top block (52) is provided on the top feeding support (51), and an air suction recess is provided on the outer end surface of the suction cup top block (52). The suction cavity (513) is connected to a negative pressure gas source; a guide support (53) is provided on the top delivery support (51), and the piston rod end of the loading top delivery cylinder (54) is movably supported on the loading support (56) through the guide support (53); the cylinder body of the loading top delivery cylinder (54) is supported on the loading support (56) by a top block retreat cylinder (57) so as to be movably supported forward and backward; the suction cup top block (52) is opposite to the main shaft hole of the main shaft device (6), and the movement path of the suction cup top block (52) is parallel to the axis of the main shaft device (6).

2. The valve head polishing machine according to claim 1, characterized in that: A polishing wheel angle adjustment mechanism (9) is also provided between the polishing wheel feeding mechanism (8) and the frame (1).

3. The valve head polishing machine according to claim 1 or 2, characterized in that: The polishing wheel (12) is a UB polishing wheel, and the polishing wheel dressing device (11) is a dressing device using a diamond dressing pen.

4. The valve head polishing machine according to claim 1, characterized in that: The material receiving portion of the valve head material receiving block (312) is V-shaped.

5. The valve head polishing machine according to claim 1, characterized in that: A material receiving support (39) is installed at the piston rod end of the feeding cylinder (37), and a feeding position adjustment limiter (38) is provided between the material receiving support (39) and the feeding bracket (31). The material receiving support (39) is located above the feeding cylinder (37). The feeding cylinder (37) is a double-axis cylinder, and a guide connecting member (36) is provided between the double-axis cylinder and the material receiving support (39). The rod receiving block support rod (310) can be fixedly connected to the material receiving support (39) in an axial direction of the connected valve, and the valve head receiving block (312) can be fixedly connected to the material receiving support (39) in an upward and downward direction.

6. The valve head polishing machine according to claim 1 or 5, characterized in that: The feeding cylinder (37) is fixedly connected to the cylinder seat (35). The cylinder seat (35) is installed on the feeding bracket (31) through a cylinder seat guide rod (32). The axis of the cylinder seat guide rod (32) is perpendicular to the running direction of the piston rod of the feeding cylinder (37). A cylinder seat adjusting screw (33) is provided between the cylinder seat (35) and the feeding bracket (31), and a cylinder seat locking screw (34) is provided between the cylinder seat (35) and the cylinder seat guide rod (32).

7. The valve head polishing machine according to claim 1, characterized in that: An elastic holding ring (512) is provided on the outer periphery of the suction cavity (513), and the outer end of the elastic holding ring (512) protrudes from the outer end surface of the suction cup top block (52).

8. The valve head polishing machine according to claim 1, characterized in that: The guide support member (53) is a guide rod fixedly connected to the top delivery support (51), and the guide rod is movably supported on a guide groove seat (55), and the guide groove seat (55) is fixedly connected to the loading support (56).

9. The valve head polishing machine according to claim 1, characterized in that: The cylinder body of the loading push cylinder (54) is connected to the piston rod end of the push block retreat cylinder (57). The push block retreat cylinder (57) is a cylinder with a guide rod. The cylinder body of the push block retreat cylinder (57) is movably mounted on the loading support (56) through a position adjustment seat (59). The loading support (56) is mounted on the spindle device (6).

10. The valve head polishing machine according to claim 9, characterized in that: The position adjustment seat (59) is supported on the loading support (56) via two guide rods (511), a position adjustment screw (510) is provided between the position adjustment seat (59) and the loading support (56), and a position locking screw (58) is provided between the position adjustment seat (59) and the guide rod (511).

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