A valve stem polishing device and method of use

Abstract

The present application belongs to the technical field of valve rod processing equipment, and particularly relates to a valve rod polishing device and a use method thereof. The polishing device comprises a positioning seat, a machine table, a polishing piece, a baffle, an adjusting frame, a magnetic seat and a pushing piece. The positioning seat can rotate and clamp the workpiece, and the top of the positioning seat can be magnetically attracted. The machine table is provided with a processing channel, the processing channel penetrates the machine table along the vertical direction, and the positioning seat can pass through the processing channel after clamping the workpiece. The polishing piece is arranged below the processing channel, and the polishing piece can polish the surface of the workpiece when contacting the workpiece. The baffle can open and close the processing channel, and the positioning seat can be placed on the baffle. The adjusting frame is arranged above the processing channel, and the adjusting frame is provided with an adjusting through slot in the vertical direction, and the horizontal profile of the adjusting through slot is matched with the horizontal profile of the positioning seat. The initial position of the magnetic seat is located in the adjusting through slot, the bottom of the magnetic seat is provided with an electromagnet, and the electromagnet can generate and lose magnetism. The pushing piece can drive the magnetic seat to move in the vertical direction. Compared with the prior art, the polishing device of the present application can improve the processing efficiency of batch workpieces, realize continuous processing, and reduce the labor intensity of workers.

Description

Technical Field

[0001] This invention belongs to the technical field of valve stem processing equipment, and particularly relates to a valve stem grinding device and its usage method. Background Technology

[0002] The valve stem is an important structural component of a valve. The valve stem needs to be threaded on its outer wall to connect with the valve. During the threading process, a large number of burrs are generated at the threading location. Therefore, it is necessary to grind the burrs on the surface of the valve stem thread. The traditional grinding method is to manually grind the burrs with sandpaper by workers. Later, some grinding devices appeared. However, workers still need to hold the valve stem to the grinding device for grinding. This grinding method is not efficient and depends on manual holding of the valve stem, making it difficult to achieve continuous processing. Therefore, it is necessary to improve the existing valve stem grinding devices. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned technical problems by providing a valve stem grinding device and its usage method. Using this grinding device can improve the efficiency of batch workpiece processing, achieve continuous processing, and reduce the labor intensity of workers.

[0004] In view of this, a first aspect of the present invention provides a valve stem grinding apparatus, comprising:

[0005] The positioning seat can rotate and clamp the workpiece, and the top of the positioning seat can be attracted by magnetism.

[0006] The machine tool is equipped with a processing channel that runs vertically through the machine tool. The positioning seat can hold the workpiece and pass through the processing channel.

[0007] The grinding component is located below the processing channel and can grind the surface of the workpiece when it comes into contact with it.

[0008] A baffle that can open and close the processing channel, and a positioning seat can be placed on the baffle;

[0009] An adjustment frame is set above the processing channel. The adjustment frame has an adjustment slot along the vertical direction, and the horizontal contour of the adjustment slot is adapted to the horizontal contour of the positioning seat.

[0010] The magnetic base is initially positioned in the adjustment slot. An electromagnet is installed at the bottom of the magnetic base, which can generate and lose magnetism.

[0011] The pusher can drive the magnetic base to move in the vertical direction.

[0012] In this technical solution, the worker clamps and fixes the workpiece using a positioning seat, then places the positioning seat on a baffle. The electromagnet on the magnetic seat is energized, causing it to become magnetic and attract the positioning seat into the adjustment channel. During this process, the positioning seat carries the workpiece into the adjustment channel, bringing the side wall of the positioning seat into contact with the side wall of the adjustment channel. This adjusts the workpiece's grinding position to be aligned with the grinding part. Next, the baffle opens the processing channel, and a pusher drives the magnetic seat vertically towards the grinding part. During this process, the magnetic seat, carrying the positioning seat and workpiece, passes through the processing channel to the grinding part, bringing the workpiece's grinding position into contact with the grinding part. The grinding part is then activated to grind the workpiece. After grinding, the grinding part is closed, and the pusher drives the magnetic seat to reset vertically. During this process, the magnetic seat, carrying the positioning seat and workpiece, returns to the top of the processing channel. The baffle then closes the processing channel, and the electromagnet on the magnetic seat is de-energized, causing it to lose its magnetism and release the positioning seat. The positioning seat, carrying the workpiece, falls onto the baffle, and the worker can then remove the positioning seat and workpiece.

[0013] In the above technical solution, the machine tool is further provided with a loading track and a unloading track on both sides of the processing channel in the first direction. The loading track and the unloading track can limit the positioning seat in the second direction. The workpiece can move from the loading track to the baffle in the first direction, and then move from the baffle to the unloading track.

[0014] In the above technical solution, a further step is to install a conveyor belt on the feeding track, which can transport the positioning seat on the feeding track toward the first direction.

[0015] In the above technical solution, the baffle is further slidably mounted on the machine base along the second direction. The machine base is provided with an opening and closing cylinder that drives the baffle to move. A stop block is provided at the end of the baffle away from the opening and closing cylinder. When the baffle opens the processing channel, the stop block can separate the feeding track from the processing channel and separate the unloading track from the processing channel.

[0016] In the above technical solution, the positioning seat further includes a fixing part and a limiting sleeve. The top of the fixing part can be magnetically attracted, and the limiting sleeve can rotate relative to the fixing part. The limiting sleeve includes:

[0017] The sleeve has an insertion groove at one end away from the fixed part for the workpiece to pass through, and a locking groove in the sleeve that connects to the insertion groove.

[0018] Two clamping plates are respectively set on both sides of the locking groove. The two clamping plates are slidably set along the radial direction of the sleeve body. The two clamping plates can be respectively locked into the two slots on the workpiece.

[0019] Two threaded holes are respectively provided on both sides of the outer wall of the sleeve along the radial direction of the sleeve, and the threaded holes are connected to the locking groove;

[0020] Two screws are connected to two threaded holes respectively, and the ends of the two screws are rotatably connected to two clamping plates respectively.

[0021] In the above technical solution, furthermore, contact blocks are provided on both sides of the fixing part, and the contact blocks are made of elastic material.

[0022] In the above technical solution, further, a slope is provided on the side of the contact block near the stop block, and a slope is also provided on the side of the stop block near the contact block.

[0023] In the above technical solution, the bottom of the through groove is further adjusted to be inclined outward.

[0024] In the above technical solution, the grinding component further includes:

[0025] A grinding roller, when rotating, contacts the workpiece and causes the workpiece to rotate. When there is a speed difference between the grinding roller and the workpiece, the contact position of the workpiece can be ground.

[0026] The resistance roller is located on one side of the grinding roller. When the resistance roller contacts the workpiece, it can reduce the rotational speed of the workpiece. The workpiece can contact both the resistance roller and the grinding roller at the same time.

[0027] The grinding motor is used to drive the grinding roller to rotate.

[0028] A second aspect of the present invention provides a method of using a valve stem grinding device, applicable to the aforementioned grinding device, and further includes a pressure sensor and a control box, wherein the pressure sensor is disposed on a baffle. The method of use includes the following steps:

[0029] S1: Control the opening and closing cylinder to drive the baffle to close the processing channel, control the grinding part to close, and control the electromagnet to de-energize; then place multiple positioning seats with workpieces in the first direction on the feeding track in sequence, and start the conveyor belt to feed;

[0030] S2: When the pressure sensor is triggered for the first time, the control conveyor belt stops feeding and the control electromagnet is energized;

[0031] S3: After the electromagnet is energized and continues for a preset time, control the opening and closing cylinder to drive the baffle to open the processing channel;

[0032] S4: After the processing channel is opened, the pusher drives the magnetic seat to move a preset distance in the vertical direction toward the grinding part, so that the workpiece contacts the grinding part.

[0033] S5: Start the grinding device to grind the workpiece. After grinding is completed, turn off the grinding device and push the magnetic seat to reset in the vertical direction.

[0034] S6: After the magnetic seat is reset, control the opening and closing cylinder to drive the baffle to close the processing channel;

[0035] S7: After the processing channel is closed, the electromagnet is de-energized;

[0036] S8: When the pressure sensor is triggered for the second time, the conveyor belt starts and the pressure sensor is reset.

[0037] The beneficial effects of this invention are:

[0038] 1. Through the coordinated arrangement of positioning base, machine table, processing channel, baffle, grinding parts, adjustment frame, adjustment channel, magnetic base, and pushing parts, the worker clamps and fixes the workpiece in place on the baffle, and the grinding device automatically completes the grinding of the workpiece. The worker only needs to perform clamping, loading, unloading, and unloading operations, which reduces labor intensity. During the grinding process, the worker can also clamp or unload other workpieces. After the grinding device finishes processing one workpiece, another workpiece can be loaded to achieve continuous processing and improve the efficiency of batch processing.

[0039] 2. By setting up loading and unloading tracks on the machine, and using a conveyor belt on the loading track to feed the positioning seats with workpieces clamped on the loading track, a batch of positioning seats with workpieces clamped can be placed sequentially on the loading track. The conveyor belt can transport one positioning seat to the baffle and then stop transporting. After the positioning seat on the baffle is processed, the conveyor belt is restarted to bring the next positioning seat to the baffle and push the original positioning seat on the baffle to the unloading track before stopping the transport again. In this way, the worker only needs to control the working status of the conveyor belt to achieve automatic loading and unloading, and replenish the positioning seats with workpieces clamped on the loading track when necessary, which further reduces the labor intensity of the workers and further improves the efficiency of batch workpiece processing.

[0040] 3. By setting a stop block on the baffle and using an opening and closing cylinder to horizontally drive the baffle to move, the processing channel can be opened and closed. When the baffle opens the processing channel, the stop block can separate the loading track from the processing channel and the unloading track from the processing channel. This prevents the positioning seats on the loading track and the unloading track from reaching the top of the processing channel when it is open, thus ensuring the stability of the workpiece during processing.

[0041] 4. By adding a pressure sensor and a control box, and electrically connecting the drive components on the grinding device to the control box through a control circuit, a closed-loop automated feeding, processing, and unloading system is formed, enabling workers to achieve continuous processing of batch workpieces without manual operation, thereby improving processing efficiency. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the workpiece (valve stem) in this invention.

[0044] Figure 2 This is a three-dimensional structural diagram of the workpiece placed on the baffle in this invention.

[0045] Figure 3 This is a schematic diagram of the main structure of the workpiece placed on the baffle in this invention.

[0046] Figure 4 This is a three-dimensional structural diagram of the workpiece in contact with the grinding part in this invention.

[0047] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0048] Figure 6 This is a front view schematic diagram of the workpiece in contact with the grinding part in this invention.

[0049] Figure 7 This is a three-dimensional structural diagram of the workpiece being adsorbed in the adjustment channel in this invention.

[0050] Figure 8 This is a schematic diagram of the main structure in which the workpiece is adsorbed in the adjustment channel in this invention.

[0051] Figure 9 This is a schematic diagram of the continuous processing of multiple workpieces in this invention.

[0052] Figure 10 This is a three-dimensional structural diagram of the positioning seat clamping the workpiece in this invention.

[0053] Figure 11 This is a schematic diagram of the internal cross-sectional structure of the positioning seat in the workpiece clamping state in this invention.

[0054] Figure 12 This is a schematic diagram of the internal cross-sectional structure of the positioning seat in this invention.

[0055] Figure 13 This is a flowchart illustrating the method of using the grinding device in this invention.

[0056] The markings in the diagram are as follows:

[0057] 100. Workpiece; 200. Slot; 1. Positioning seat; 101. Fixing part; 102. Limiting sleeve; 1021. Sleeve body; 1022. Insertion groove; 1023. Locking groove; 1024. Clamping plate; 1025. Threaded hole; 1026. Screw; 1027. Guide hole; 1028. Guide rod; 103. Contact block; 2. Machine base; 3. Processing channel; 4. Grinding part; 401. Grinding roller; 402. Resistance roller; 403. Grinding motor; 5. Baffle; 501. Stop block; 6. Adjusting frame; 601. Adjusting through groove; 7. Magnetic seat; 8. Pushing part; 9. Loading track; 10. Unloading track; 11. Conveyor belt; 12. Opening and closing cylinder; 13. Outer flange; 14. Inner flange; X, First direction; Y, Second direction; Z, Vertical direction; Detailed Implementation

[0058] 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.

[0059] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0060] The valve stem (workpiece 100) structure in this invention is as follows: Figure 1 As shown, one end of the valve stem is threaded, and the other end of the valve stem is equipped with a mounting part. The overall diameter of the mounting part is the same as the overall diameter of the valve stem, or the overall diameter of the mounting part is smaller than the overall diameter of the valve stem. On the two opposite side walls of the mounting part, there are grooves 200 for connecting with the handle or other drive components on the valve.

[0061] Example 1

[0062] like Figures 2-8As shown, this application provides a valve stem grinding device, including: a positioning seat 1, a machine base 2, a processing channel 3, a grinding part 4, a baffle 5, an adjusting frame 6, a magnetic seat 7, and a pushing part 8;

[0063] The positioning seat 1 can rotate and clamp the workpiece 100. That is, after the positioning seat 1 clamps the workpiece 100, the workpiece 100 can only rotate relative to the positioning seat 1 in its own circumference. The positioning seat 1 can be made of non-metallic material. A metal that can be attracted by magnetism is set on the top of the positioning seat 1 so that the top of the positioning seat 1 can be attracted by magnetism.

[0064] Please see Figure 2 The machine tool 2 is provided with a processing channel 3. The processing channel 3 runs through the machine tool 2 in the vertical direction Z. The width of the processing channel 3 in the first direction X is slightly larger than the width of the positioning seat 1 in the first direction X. The width of the processing channel 3 in the second direction Y is larger than the overall width of the positioning seat 1 in the second direction Y after clamping the workpiece 100. After clamping the workpiece 100, the positioning seat 1 can pass through the processing channel 3 in the vertical direction Z.

[0065] The grinding component 4 is disposed below the processing channel 3. When the grinding component 4 comes into contact with the workpiece 100, it can grind the surface of the workpiece 100. Specifically, in this embodiment, the grinding component 4 includes: a grinding roller 401, a resistance roller 402, and a grinding motor 403.

[0066] Please see Figure 3 The grinding roller 401 is rotatably mounted below the machine base 2. When the grinding roller 401 rotates, it contacts the workpiece 100 and drives the workpiece 100 to rotate. When there is a speed difference between the grinding roller 401 and the workpiece 100, the grinding roller 401 can grind the contact position of the workpiece 100. The grinding roller 401 can be a commercially available roller product for grinding the workpiece 100. The grinding motor 403 is mounted on the machine base 2 to drive the grinding roller 401 to rotate.

[0067] The resistance roller 402 is disposed on one side of the grinding roller 401. The resistance roller 402 does not contact the grinding roller 401. When the resistance roller 402 contacts the workpiece 100, it reduces the rotational speed of the workpiece 100. It should be noted that the resistance roller 402 can be fixedly mounted on the machine base 2 to decelerate the workpiece 100 without rotation, or it can be rotatably mounted on the machine base 2 to decelerate the workpiece 100 when it rotates in the opposite direction to the rotation of the grinding roller 401. The resistance roller 402 can be any commercially available roller product capable of decelerating a rotating workpiece 100; please refer to [link to relevant documentation]. Figure 6 The workpiece 100 can simultaneously contact the resistance roller 402 and the grinding roller 401;

[0068] The baffle 5 is movably mounted on the machine base 2. The baffle 5 can open and close the processing channel 3. Any existing configuration that enables the baffle 5 to open and close the processing channel 3 can be used as the configuration of the baffle 5 in this embodiment. For example, the baffle 5 can be mounted on the machine base 2 in a sliding manner or in a swinging manner. Furthermore, the baffle 5 can fully or partially open the processing channel 3, as long as it ensures that the positioning seat 1 and the workpiece 100 can pass through the processing channel 3 as a whole in the vertical direction Z when the processing channel 3 is open. Similarly, the baffle 5 can fully or partially close the processing channel 3, as long as it ensures that the positioning seat 1 and the workpiece 100 can be stably placed on the baffle 5 as a whole. Figure 2 The image shows the situation where baffle 5 partially closes processing channel 3;

[0069] Please see Figure 2 and Figure 3 The adjustment frame 6 is set above the processing channel 3. An adjustment slot 601 is provided on the adjustment frame 6 along the vertical direction Z. The horizontal contour of the adjustment slot 601 is adapted to the horizontal contour of the positioning seat 1. That is, the width of the adjustment slot 601 in the first direction X is the same as the width of the top of the positioning seat 1 in the first direction X.

[0070] The initial position of the magnetic seat 7 is located in the adjustment channel 601. An electromagnet is provided at the bottom of the magnetic seat 7. When the electromagnet is energized, it will generate magnetism to attract the top of the positioning seat 1. When the electromagnet is de-energized, it will lose its magnetism and will not be able to attract the positioning seat 1.

[0071] In this embodiment, the pusher 8 has a fixed end and a movable end. The fixed end of the pusher 8 is mounted on the machine base 2, and the movable end of the pusher 8 can move in the vertical direction Z. The movable end of the pusher 8 is connected to the magnetic seat 7 and can drive the magnetic seat 7 to move in the vertical direction Z. The pusher 8 can be a pneumatic cylinder or a hydraulic cylinder.

[0072] In this embodiment, during processing, the worker can place the positioning seat 1 with the workpiece 100 clamped on the baffle 5 and opposite to the position of the adjustment channel, and then energize the electromagnet to make the positioning seat 1 move upward into the adjustment channel and be attracted by the magnetic seat 7. Alternatively, the worker can manually place the positioning seat 1 with the workpiece 100 clamped on into the adjustment channel, and then energize the electromagnet to make the positioning seat 1 be directly attracted by the magnetic seat 7.

[0073] As a preferred embodiment, please refer to Figure 3The bottom of the adjustment channel 601 is tilted outward so that the width of the bottom of the adjustment channel 601 in the first direction X is greater than the width of the top of the positioning seat 1 in the first direction X. In this way, when the positioning seat 1 is placed on the baffle 5, even if there is a certain deviation between the positioning seat 1 and the adjustment channel 601 in the first direction X, the positioning seat 1 can be automatically adjusted by the side wall of the adjustment channel 601 after entering the adjustment channel 601, and finally be attracted by the magnetic seat 7 in the correct position. This ensures that when the workpiece 100 is pushed to the grinding part 4, the threaded part can contact the grinding roller 401 and the resistance roller 402 at the same time.

[0074] In this embodiment, please refer to Figure 7 and Figure 8 After the positioning seat 1 is attracted by the magnetic seat 7 in the adjustment channel, the control baffle 5 opens the processing channel 3, and the pusher 8 drives the magnetic seat 7 to approach the grinding workpiece 4 in the vertical Z direction. During this process, the magnetic seat 7 carries the positioning seat 1 and the workpiece 100 through the processing channel 3 to the grinding workpiece 4, and makes the threaded part of the workpiece 100 contact the grinding roller 401 and the resistance roller 402 simultaneously. Please refer to [link to relevant documentation]. Figure 4 and Figure 6 At this time, the grinding motor 403 is started to drive the grinding roller 401 to rotate, so as to Figure 6 Taking the orientation sequence as an example, the grinding roller 401 rotates counterclockwise and drives the workpiece 100 to rotate clockwise. During this process, under the deceleration action of the resistance roller 402, a speed difference is generated between the workpiece 100 and the grinding roller 401, allowing the grinding roller 401 to grind the workpiece 100. Since the workpiece 100 rotates relative to the grinding roller 401, all positions in the circumferential direction of the workpiece 100 can contact the grinding roller 401, enabling the grinding roller 401 to completely grind the threaded portion of the workpiece 100. After grinding is completed, the grinding motor 403 is turned off, and the pusher 8 drives the magnetic seat 7 to reset in the vertical Z direction. During this process, the magnetic seat 7, carrying the positioning seat 1 and the workpiece 100, returns to the top of the processing channel 3. Then, the control baffle 5 closes the processing channel 3, de-energizes the electromagnet on the magnetic seat 7, causing the electromagnet to lose its magnetism and release the positioning seat 1. Please refer to [link to relevant documentation]. Figure 2 and Figure 3 At this point, the positioning seat 1, along with the workpiece 100, falls onto the baffle 5, and the worker can then remove the positioning seat 1 and the workpiece 100.

[0075] In this embodiment, the time for the grinding motor 403 to drive the grinding roller 401 to rotate each time can be preset after the grinding test, so that the grinding motor 403 stops working after the preset time, thereby reducing the manual operation steps of the worker.

[0076] In this embodiment, the worker only needs to perform clamping, loading, unloading and unloading operations, which reduces labor intensity. Furthermore, while the grinding device is grinding the workpiece 100, the worker can also clamp or unload other workpieces 100. After the grinding device finishes processing one workpiece 100, another workpiece 100 can be installed to achieve continuous processing and improve the efficiency of processing batches of workpieces 100.

[0077] Example 2

[0078] This embodiment further optimizes the polishing device based on Embodiment 1;

[0079] In this embodiment, please refer to Figure 4 The machine base 2 is provided with a loading track 9 and a unloading track 10 on both sides of the processing channel 3 in the first direction X. The loading track 9 and the unloading track 10 can limit the positioning seat 1 in the second direction Y. The upper surface of the baffle 5 is flush with the upper surface of the loading track 9 and the unloading track 10. The workpiece 100 can move from the loading track 9 to the baffle 5 in the first direction X, and then move from the baffle 5 to the unloading track 10.

[0080] Specifically, both the loading track 9 and the unloading track 10 are equipped with outer retaining edges 13 and inner retaining edges 14. The outer retaining edges 13 and inner retaining edges 14 are spaced apart in the second direction Y. The outer retaining edge 13 can limit the end of the positioning seat 1 away from the workpiece 100, and the inner retaining edge 14 can limit the end of the positioning seat 1 close to the workpiece 100. Please refer to [link / reference]. Figure 9 When the positioning seat 1 is placed on the feeding track 9, the surface of the positioning seat 1 away from the workpiece 100 can fit against the side wall of the outer flange 13, and the surface of the positioning seat 1 close to the workpiece 100 can fit against the inner flange 14, thereby limiting the displacement of the positioning seat 1 in the second direction Y.

[0081] In this embodiment, the positioning seats 1 with workpieces 100 clamped in batches are placed sequentially on the loading track 9. Then, the positioning seats 1 on the loading track 9 are pushed in the first direction X. In this way, the positioning seats 1 on the loading track 9 can be pushed onto the baffle 5, and the positioning seats 1 on the baffle 5 can also be pushed onto the unloading track 10. Finally, the worker removes the positioning seats 1 at the unloading track 10. The positioning seats 1 can be stacked on the unloading track 10. As the positioning seats 1 on the loading track 9 move, the positioning seats 1 on the unloading track 10 will also be pushed and moved. A collection container can be placed below the end of the unloading track 10 to collect the processed workpieces 100 and positioning seats 1.

[0082] In this embodiment, the positioning seat 1 on the feeding track 9 can be manually pushed by a worker.

[0083] Example 3

[0084] This embodiment further optimizes the polishing device based on embodiment 2;

[0085] In this embodiment, please refer to Figure 4 A conveyor belt 11 is provided on the feeding track 9. The conveyor belt 11 can contact the positioning seat 1 on the feeding track 9, thereby conveying the positioning seat 1 on the feeding track 9 toward the first direction X.

[0086] Please see Figure 9 After placing the positioning seats 1 with the workpieces 100 in batches on the loading track 9, start the conveyor belt 11 to transport one positioning seat 1 to the baffle 5. At this time, the conveyor belt 11 stops transporting. After the workpieces 100 on the baffle 5 are processed, start the conveyor belt 11 again to push the new positioning seat 1 onto the baffle 5 and push the original positioning seat 1 on the baffle 5 onto the unloading track 10.

[0087] In this embodiment, the positioning seat 1 on the feeding track 9 is driven by the conveyor belt 11, eliminating the need for workers to manually push the positioning seat 1 and reducing the labor intensity of workers.

[0088] Example 4

[0089] This embodiment further optimizes the polishing device based on embodiment 3;

[0090] Please see Figure 2 and Figure 4 In this embodiment, the baffle 5 is slidably disposed on the machine base 2 along the second direction Y. The machine base 2 is provided with an opening and closing cylinder 12 for driving the baffle 5 to move. Under the drive of the opening and closing cylinder 12, the baffle 5 moves back and forth in the second direction Y, thereby realizing the opening and closing of the processing channel 3.

[0091] Please see Figure 2 A stop block 501 is provided at one end of the baffle 5 away from the opening and closing cylinder 12. Stop blocks 501 are provided on both sides of the end of the baffle 5. When the baffle 5 closes the processing channel 3, both stop blocks 501 are located on the side of the inner edge 14 away from the outer edge 13. This will not affect the positioning seat 1 on the loading track 9 from moving onto the baffle 5, nor will it affect the positioning seat 1 on the baffle 5 from moving onto the unloading track 10.

[0092] Please see Figures 4-6When the baffle 5 opens the processing channel 3, neither the baffle 5 nor the two stop blocks 501 will interfere with the positioning seat 1 above the processing channel 3. At this time, one stop block 501 is located between the processing channel 3 and the loading rail 9, and the stop block 501 is higher than the loading rail 9 in the vertical direction Z, which can separate the loading rail 9 from the processing channel 3, so that the stop block 501 can block the positioning seat 1 on the loading rail 9 that is closest to the processing channel 3; while the other stop block 501 is located between the processing channel 3 and the unloading rail 10, and the stop block 501 is higher than the unloading rail 10 in the vertical direction Z, which can separate the unloading rail 10 from the processing channel 3, so that the stop block 501 can block the positioning seat 1 on the unloading rail 10 that is closest to the processing channel 3.

[0093] By cleverly setting two stop blocks 501 on the baffle 5, it can be ensured that during the processing of a workpiece 100, the positioning seat 1 on the loading track 9 and the unloading track 10 will not enter the processing channel 3. Even if the conveyor belt 11 starts unexpectedly, the positioning seat 1 on the loading track 9 will only slip relative to the conveyor belt 11 due to the obstruction of the stop block 501, thus ensuring the stability of the workpiece 100 processing.

[0094] Example 5

[0095] Based on embodiment 4, this embodiment also discloses a structure of the positioning seat 1;

[0096] In this embodiment, as Figure 10-12 As shown, the positioning seat 1 includes a fixing part 101 and a limiting sleeve 102; please refer to the details. Figure 10 The fixing base is L-shaped overall. The top of the fixing part 101 can be magnetically attracted. The fixing part 101 can be made entirely of non-metallic material. A magnetically attracted metal is provided on the top of the fixing part 101. The limiting sleeve 102 can rotate relative to the lower part of the fixing part 101. The bottom surface of the fixing part 101 is flush with the outer peripheral surface of the limiting sleeve 102. Please refer to [link / reference]. Figure 9 When the positioning seat 1 is on the loading track 9 or the unloading track 10, the side wall of the outer stop 13 contacts the side wall of the fixing part 101, and the side wall of the inner stop 14 contacts the end face of the limiting sleeve 102.

[0097] The limiting sleeve 102 includes: a sleeve body 1021, an insertion groove 1022, a locking groove 1023, two clamping plates 1024, two threaded holes 1025, and two screws 1026;

[0098] Please see Figure 12The sleeve 1021 has an insertion groove 1022 at one end away from the fixing part 101 for the workpiece 100 to pass through. A locking groove 1023 communicating with the insertion groove 1022 is provided in the sleeve 1021. The overall diameter of the insertion groove 1022 is the same as the diameter of the workpiece 100, and the diameter of the locking groove 1023 is larger than the diameter of the insertion groove 1022. Please refer to [link / reference]. Figure 11 After one end of the workpiece 100 is inserted into the insertion groove 1022, the side wall of the insertion groove 1022 contacts the side wall of the workpiece 100. When the workpiece 100 is inserted into the position, the two slots 200 on the mounting part of the workpiece 100 are located in the locking groove 1023.

[0099] Two clamping plates 1024 are respectively disposed on both sides of the locking groove 1023. The two clamping plates 1024 are slidably disposed along the radial direction of the sleeve 1021. Two threaded holes 1025 are respectively disposed on both sides of the outer wall of the sleeve 1021 along the radial direction of the sleeve 1021. The threaded holes 1025 are connected to the locking groove 1023. Two screws 1026 are respectively threaded to the two threaded holes 1025. The ends of the two screws 1026 are respectively rotatably connected to the two clamping plates 1024.

[0100] Specifically, guide holes 1027 are provided on both sides of the outer wall of the sleeve 1021, and the guide holes 1027 penetrate the locking groove 1023. Guide rods 1028 are provided on both clamping blocks, and the end of the guide rod 1028 away from the clamping block is slidably disposed in the guide hole 1027. Please refer to [link / reference]. Figure 11 The two clamping plates 1024 can be respectively inserted into the two slots 200 on the workpiece 100, thereby restricting the rotation and axial movement of the workpiece 100.

[0101] When it is necessary to remove the workpiece 100, rotate the two screws 1026 to move the two clamping plates 1024 away from the corresponding slots 200, and the workpiece 100 can be taken out from the insertion slot 1022. The clamping and removal are very convenient.

[0102] Example 6

[0103] Based on Example 5, this embodiment further optimizes the structure of the positioning seat 1;

[0104] In this embodiment, as Figure 10-12 As shown, contact blocks 103 are provided on both sides of the fixing part 101, and the contact blocks 103 are made of elastic material; please refer to Figure 9When multiple positioning seats 1 are on the loading track 9 or unloading track 10, the thrust is transmitted between two adjacent positioning seats 1 through the contact block 103. The contact block 103, made of elastic material, can buffer the impact generated when the thrust is transmitted between adjacent positioning blocks, reducing the impact damage to the positioning seat 1. In addition, when one positioning seat 1 is located on the baffle 5, the positioning seat 1 on another loading track 9 or unloading track 10 may be closer to the baffle 5. At this time, the contact block 103 on the positioning seat 1 is covered by the inclined part at the bottom of the adjustment groove 601, thereby preventing the top of the positioning seat 1 from being covered by the inclined part at the bottom of the adjustment groove 601. When the electromagnet generates magnetic attraction, the positioning seat 1 will not be affected, thereby improving the stability of the workpiece 100 processing process.

[0105] Example 7

[0106] Based on embodiment 6, this embodiment further optimizes the structure of contact block 103 and stop block 501;

[0107] In this embodiment, please refer to Figure 10 The contact block 103 has a beveled surface on the side near the stop block 501. Please refer to [link / reference]. Figure 5 The stop block 501 also has a slope on the side near the contact block 103;

[0108] When a positioning seat 1 is attracted by a magnetic seat, the baffle 5 moves horizontally to open the processing channel 3. The two stop blocks 501 on the baffle 5 move towards the outer edge 13. During this process, taking the positioning seat 1 on the loading track 9 as an example, the inclined surface on the stop block 501 will contact the inclined surface on the contact block 103 of the positioning seat 1 closest to the processing channel 3 on the loading track 9, and push the positioning seat 1 away from the processing channel 3 in the first direction X, so as to ensure that other positioning seats 1 will not enter the processing channel 3 and interfere with the processing of the workpiece 100.

[0109] The inclined surface on the stop block 501 cooperates with the inclined surface on the contact block 103, so that even if the positioning seat 1 on the loading track 9 or the unloading track 10 is close to the processing channel 3, the stop block 501 can smoothly push the positioning seat 1 away from the processing channel 3, ensuring the stability of the workpiece 100 processing process.

[0110] Example 8

[0111] This embodiment discloses a method for using a valve stem grinding device, applicable to grinding devices of Embodiment 4 and earlier. It also includes a pressure sensor and a control box. The pressure sensor is mounted on the baffle 5. When the positioning seat 1 moves from the feeding track 9 to the baffle 5, the pressure sensor is triggered and transmits a signal to the control box. The control box can control the start and stop of the conveyor belt 11, control the working state of the opening and closing cylinder 12, control the on and off of the electromagnet, and control the pushing state of the pusher 8. For details, please refer to [link to relevant documentation]. Figure 13 The usage method includes the following steps:

[0112] S1: In the initial state, control the opening and closing cylinder 12 to drive the baffle 5 to close the processing channel 3, control the grinding part 4 to close, and control the electromagnet to de-energize; the worker clamps a workpiece 100 through a positioning seat 1, first clamps multiple workpieces 100, and then places multiple positioning seats 1 with workpieces 100 clamped in sequence on the feeding track 9 along the first direction X, and the conveyor belt 11 starts feeding.

[0113] S2: When the pressure sensor is triggered for the first time, it indicates that a positioning seat 1 has moved onto the baffle 5. The pressure sensor transmits the signal to the control box, which controls the conveyor belt 11 to stop feeding and controls the electromagnet to be energized, so that the magnetic seat 7 attracts the positioning seat 1 on the baffle 5 into the adjustment channel and finally holds the positioning seat 1 in place.

[0114] S3: The process of the magnetic seat 7 attracting the positioning seat 1 can generally be completed in a few milliseconds. In order to ensure the accuracy of the workpiece 100 processing, after the electromagnet is energized and continues for a preset time, the controller controls the opening and closing cylinder 12 to drive the baffle 5 to open the processing channel 3. The preset time can be 1 second or less.

[0115] S4: The opening of the processing channel 3 by the baffle 5 is generally completed within 1-2 seconds. In order to ensure the accuracy of the workpiece 100 processing, after the opening and closing cylinder 12 has worked for a sufficient time to ensure that the processing channel 3 is open, the pusher 8 will then start to drive the magnetic seat 7 to move a preset distance in the vertical Z direction toward the grinding part 4, so that the workpiece 100 contacts the grinding part 4. The working time setting of the opening and closing cylinder 12 and the pushing distance setting of the pusher 8 can be obtained by taking a workpiece 100 and conducting several tests.

[0116] S5: Start the grinding component 4 to grind the workpiece 100. After grinding is completed, turn off the grinding component 4 and push the magnetic seat 7 to reset in the vertical direction Z.

[0117] S6: After the magnetic seat 7 is reset, the control cylinder 12 drives the baffle 5 to close the processing channel 3;

[0118] S7: After processing channel 3 is closed, the electromagnet is de-energized;

[0119] S8: When the pressure sensor is triggered for the second time, the conveyor belt 11 starts and the pressure sensor is reset.

[0120] Then, without shutting down the machine, repeatedly execute steps S2-S8;

[0121] In this embodiment, the drive element on the grinding device is electrically connected to the control box through a control circuit to form a closed-loop automated feeding, processing and unloading system. The worker only needs to add the positioning seat 1 with the workpiece 100 clamped on the feeding track 9 when necessary, so that the worker can realize the continuous processing of batch workpieces 100 without too much manual operation, and the processing efficiency is high.

[0122] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A valve stem grinding device, characterized in that, include: Positioning seat (1), which can rotate and clamp the workpiece (100), and the top of the positioning seat (1) can be magnetically attracted; A machine base (2) is provided with a processing channel (3), which runs through the machine base (2) in a vertical direction (Z), and the positioning seat (1) can pass through the processing channel (3) after clamping the workpiece (100). A grinding component (4) is disposed below the processing channel (3) and can grind the surface of the workpiece (100) when it comes into contact with the workpiece (100). A baffle (5) is provided, which can open and close the processing channel (3), and the positioning seat (1) can be placed on the baffle (5). An adjustment frame (6) is provided above the processing channel (3). An adjustment slot (601) is provided on the adjustment frame (6) along the vertical direction (Z). The horizontal contour of the adjustment slot (601) is adapted to the horizontal contour of the positioning seat (1). A magnetic base (7) is initially positioned in the adjustment slot (601). An electromagnet is provided at the bottom of the magnetic base (7), and the electromagnet can generate and lose magnetism. Pusher (8) that can drive the magnetic base (7) to move in the vertical direction (Z).

2. The valve stem grinding device according to claim 1, characterized in that: The machine base (2) is provided with a loading track (9) and a unloading track (10) on both sides of the processing channel (3) in the first direction (X). The loading track (9) and the unloading track (10) can limit the positioning seat (1) in the second direction (Y). The workpiece (100) can move from the loading track (9) to the baffle (5) in the first direction (X), and then move from the baffle (5) to the unloading track (10).

3. The valve stem grinding device according to claim 2, characterized in that: A conveyor belt (11) is provided on the feeding track (9), and the conveyor belt (11) can transport the positioning seat (1) on the feeding track (9) toward the first direction (X).

4. The valve stem grinding device according to claim 3, characterized in that: The baffle (5) is slidably disposed on the machine base (2) along the second direction (Y). The machine base (2) is provided with an opening and closing cylinder (12) for driving the baffle (5) to move. A stop block (501) is provided at one end of the baffle (5) away from the opening and closing cylinder (12). When the baffle (5) opens the processing channel (3), the stop block (501) can separate the loading track (9) from the processing channel (3) and separate the unloading track (10) from the processing channel (3).

5. The valve stem grinding device according to claim 4, characterized in that: The positioning seat (1) includes a fixing part (101) and a limiting sleeve (102). The top of the fixing part (101) can be magnetically attracted, and the limiting sleeve (102) can rotate relative to the fixing part (101). The limiting sleeve (102) includes: A sleeve (1021) is provided with an insertion groove (1022) for the workpiece (100) to pass through at one end away from the fixing part (101), and a locking groove (1023) communicating with the insertion groove (1022) is provided in the sleeve (1021). Two clamping plates (1024) are respectively disposed on both sides of the locking groove (1023). The two clamping plates (1024) are slidably disposed along the radial direction of the sleeve (1021). The two clamping plates (1024) can be respectively inserted into the two slots (200) on the workpiece (100). Two threaded holes (1025) are respectively disposed on both sides of the outer wall of the sleeve (1021) along the radial direction of the sleeve (1021), and the threaded holes (1025) are connected to the locking groove (1023). Two screws (1026) are threadedly connected to two threaded holes (1025) respectively, and the ends of the two screws (1026) are rotatably connected to two clamping plates (1024) respectively.

6. The valve stem grinding device according to claim 5, characterized in that: Contact blocks (103) are provided on both sides of the fixing part (101), and the contact blocks (103) are made of elastic material.

7. The valve stem grinding device according to claim 6, characterized in that: The contact block (103) has an inclined surface on the side near the stop block (501), and the stop block (501) also has an inclined surface on the side near the contact block (103).

8. The valve stem grinding device according to claim 1, characterized in that: The bottom of the adjustment channel (601) is inclined outward.

9. The valve stem grinding device according to claim 1, characterized in that, The polishing component (4) includes: The grinding roller (401) can rotate and contact the workpiece (100) to drive the workpiece (100) to rotate. When there is a speed difference between the grinding roller (401) and the workpiece (100), the grinding roller (401) can grind the contact position of the workpiece (100). A resistance roller (402) is disposed on one side of the grinding roller (401). When the resistance roller (402) contacts the workpiece (100), it can reduce the rotational speed of the workpiece (100). The workpiece (100) can contact the resistance roller (402) and the grinding roller (401) simultaneously. A grinding motor (403) is used to drive the grinding roller (401) to rotate.

10. A method of using a valve stem grinding device, applicable to the grinding device described in claim 4, characterized in that, It also includes a pressure sensor and a control box, the pressure sensor being mounted on the baffle (5), and the method of use includes the following steps: S1: Control the opening and closing cylinder (12) to drive the baffle (5) to close the processing channel (3), control the grinding part (4) to close, and control the electromagnet to de-energize; then place multiple positioning seats (1) with workpieces (100) clamped on the feeding track (9) in sequence along the first direction (X), and start the conveyor belt (11) to feed; S2: When the pressure sensor is triggered for the first time, control the conveyor belt (11) to stop feeding and control the electromagnet to be energized; S3: After the electromagnet is energized and continues for a preset time, control the opening and closing cylinder (12) to drive the baffle (5) to open the processing channel (3); S4: After the processing channel (3) is opened, the pusher (8) drives the magnetic seat (7) to move a preset distance in the vertical direction (Z) toward the grinding part (4) so ​​that the workpiece (100) contacts the grinding part (4); S5: Start the grinding component (4) to grind the workpiece (100). After grinding is completed, turn off the grinding component (4) and push the magnetic seat (7) to reset in the vertical direction (Z). S6: After the magnetic seat (7) is reset, control the opening and closing cylinder (12) to drive the baffle (5) to close the processing channel (3); S7: After the processing channel (3) is closed, the electromagnet is de-energized; S8: When the pressure sensor is triggered for the second time, the conveyor belt (11) starts and the pressure sensor is reset.

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