A round machine needle cylinder polishing device with scrap removing function

Abstract

The application provides a circular machine needle cylinder polishing device with a debris removal function, which comprises a pedestal, a first guide rail seat for mounting a mounting tray is arranged on the pedestal, and a bearing chuck is mounted, so that the bearing chuck can drive the needle cylinder to move along the length direction of the first guide rail seat, a support for mounting a displacement driving part is arranged on one side of the pedestal, a receiving plate in the displacement driving part is connected with a storage seat, the receiving plate is connected with a bearing seat mounted on a screw rod, two groups of polishing parts are arranged on the storage seat, the bearing seat moves linearly along the screw rod, so that the polishing parts are driven to adjust the position, guide seats in a dust collection assembly are located on both sides of the storage seat, the guide seats are connected with first pipes mounted on a dust collection box through second pipes, and the dust collection box is also provided with a fan, so that a negative pressure environment is formed in the dust collection box, debris generated in the polishing process is quickly sucked into the dust collection box, and the debris removal operation in the needle cylinder polishing process is completed.

Description

Technical Field

[0001] This application relates to the field of grinding equipment technology, and in particular to a cylindrical needle grinding device with chip removal function. Background Technology

[0002] Grinding is a crucial precision-ensuring process in the machining of circular knitting machine cylinders. It is used to improve surface accuracy, ensure uniform clearance between the cylinder inner wall and the knitting needles, prevent needle jamming, optimize surface roughness, enhance cylinder wear resistance, extend its service life, and improve the overall machine's operational stability. However, grinding easily generates chips, and existing chip removal methods require manual cleaning after machine shutdown. This results in chips remaining on the grinding surface or machine worktable, which can easily cause secondary scratches, reduce cylinder surface quality and machining accuracy, and the flying metal chips can easily injure operators, posing certain safety hazards. Utility Model Content

[0003] The purpose of this invention is to provide a circular needle cylinder grinding device with chip removal function to solve the above-mentioned problems.

[0004] The technical solution of this application is implemented as follows: This application provides a cylindrical syringe polishing device with chip removal function, including a base, a first guide rail seat on the base, a tray movably mounted on the first guide rail seat and a bearing chuck for placing syringes, a support on one side of the base and located on one side of the first guide rail seat, the support having a cavity and a displacement driving component installed therein, the displacement driving component including a lead screw, the lead screw being rotatably mounted in the cavity and a drive motor installed therein, a bearing seat mounted on the lead screw, slots extending into the cavity on both sides of the support, and a bearing seat having a protrusion and a receiving plate connected through the slot; The receiving plate is provided with a storage seat, which has two sets of spaced slots. A grinding component is provided in the slot. The grinding component includes a first motor component, which is located in the slot and connected to a rotating shaft. The rotating shaft is located outside the storage seat and is equipped with a grinding roller. A grinding area for the syringe is formed between the two sets of grinding rollers. A dust collection assembly is provided on one side of the platform. The dust collection assembly includes a dust collection box, which is located on the side of the platform away from the first guide rail seat. The dust collection box has an opening, and a screen plate is inclinedly arranged inside the dust collection box. Part of the screen plate is located outside the dust collection box. A fan component is provided at the bottom of the dust collection box, and the output end of the fan component faces the screen plate. A first tube is installed on the top of the dust collection box. There are guide seats on both sides of the platform, and a second tube is connected to the guide seat and communicates with the first tube.

[0005] In one embodiment, a pulverizing assembly is also included, comprising a pulverizing chamber located on one side of the platform and below the screen plate. A shaft is rotatably mounted inside the crushing chamber. One end of the shaft extends to the outside of the crushing chamber and is fitted with a second motor. A pressure roller is mounted on the shaft.

[0006] In one embodiment, the bottom of the empty slot is provided with a slot that penetrates the storage seat, the part of the rotating shaft is located in the slot, and a sliding groove is also provided on one side of the storage seat. Two sets of symmetrically distributed first push rod components are provided on the outer side of the storage seat. The piston end of the first push rod component is equipped with a connecting part, and the connecting part passes through the slide groove to connect with the first motor component. By extending and retracting the piston end in the first push rod component, the connecting part drives the grinding components to be distributed at intervals along the length of the slide groove. As the two sets of grinding components move closer or further apart, the grinding area expands or shrinks.

[0007] In one embodiment, a transmission component is also provided inside the pedestal. The transmission component includes a transmission motor and a driven shaft. The transmission motor and the driven shaft are spaced apart inside the pedestal. The output end of the transmission motor is connected to a first pulley, and a second pulley is mounted on the driven shaft. A synchronous belt is connected between the first pulley and the second pulley. The pallet is connected to the timing belt. When the timing belt is driven to rotate by the cooperation of the drive motor and the driven shaft, the pallet drives the carrier chuck to move relative to it.

[0008] In one embodiment, the receiving plate is further provided with two sets of second guide rail seats that are symmetrically distributed at intervals; The flow guide seat is partially movable on the second guide rail seat, thereby realizing the adjustment of the flow guide seat position.

[0009] In one embodiment, the vacuuming assembly further includes a switch adjustment component, which includes a second push rod component disposed on one side of the vacuum chamber and above the opening; The output end of the second push rod component is connected to a baffle. By extending and retracting the second push rod component, the baffle can move closer to or further away from the screen plate. When the baffle comes into contact with the screen plate, the opening of the baffle covers it.

[0010] In one embodiment, the outer periphery of the pressure roller is provided with a pointed portion, and the pointed portion is provided in a plurality of such portions and is evenly distributed along the circumferential direction of the pressure roller.

[0011] The advantages or beneficial effects of the above technical solutions include at least the following: This application discloses a cylindrical syringe grinding device with chip removal function. Based on a base, a stable support is constructed for the entire device. By placing the syringe to be processed on a support chuck and moving it relative to the first guide rail along its length with the cooperation of the tray, part of the syringe is located in the grinding component. Since the first motor component in the grinding component is installed on a placement seat connected to the receiving plate, the position of the grinding component can be adjusted by the cooperation of the lead screw and the drive motor, thus facilitating the grinding operation of syringes of different sizes and heights. Furthermore, because the fan component in the dust collection assembly delivers the negative pressure generated by the cooperation of the first and second pipes to the guide seat, and the guide seat is located on both sides of the placement seat, the chips can enter the dust collection box from the guide seat during the grinding process to complete the chip collection. The guide seat, the first pipe, and the second pipe together form an efficient chip transmission channel, and the screen plate intercepts the chips, completing the separation of chips from the air. This solves the problem that existing grinding devices cannot perform chip removal operations during the grinding process, which leads to safety hazards and affects product precision. Attached Figure Description

[0012] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the description thereof, serve to explain the principles of the present application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.

[0013] Figure 1 A schematic diagram of the circular syringe grinding device according to an embodiment of this application is shown from one perspective; Figure 2 A schematic diagram of the circular syringe grinding device according to an embodiment of this application is shown from another perspective; Figure 3 A partial cross-sectional structural schematic diagram of the circular syringe grinding device according to an embodiment of this application is provided; Figure 4 A partial structural schematic diagram of the circular syringe grinding device according to an embodiment of this application is provided; Figure 5 A cross-sectional structural diagram of the platform according to an embodiment of this application is shown; Figure 6 Examples of this application are presented. Figure 2 Enlarged view of point A in the middle; Reference numerals: 1. Base; 11. First guide rail base; 111. Tray; 112. Carrying chuck; 12. Support; 121. Slot; 13. Transmission component; 131. Transmission motor; 1311. First pulley; 132. Driven shaft; 1321. Second pulley; 133. Synchronous belt; 2. Displacement drive component; 21. Lead screw; 22. Drive motor; 23. Bearing seat; 24. Support plate; 241. Storage seat; 2411. Slide groove; 242. Second guide rail seat; 3. Grinding components; 31. First motor component; 32. Rotating shaft; 33. Grinding roller; 4. Dust collection assembly; 41. Dust collection box; 411. Opening; 412. First tube body; 42. Screen plate; 43. Fan component; 44. Flow guide seat; 441. Second tube body; 45. Switch adjustment component; 451. Second push rod component; 452. Baffle component; 5. Crushing assembly; 51. Crushing box; 52. Shaft; 521. Pressure roller; 5211. Tip; 53. Second motor component; 6. First push rod assembly; 61. Connecting part. Detailed Implementation

[0014] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0015] It should be noted that, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this application are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0017] It should be noted that the terms "a" and "several" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0018] The names of the messages or information exchanged between multiple devices in the embodiments of this application are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0019] Reference Figures 1-5 A cylindrical syringe polishing device with chip removal function includes a base 1, on which a first guide rail 11 is provided. A tray 111 is movably mounted on the first guide rail 11 and a support chuck 112 for placing syringes is installed. The support chuck 112 is a pneumatic rotary chuck of the prior art. A support 12 is provided on one side of the base 1 and located on one side of the first guide rail 11. The support 12 has a cavity and a displacement driving component 2 is installed therein. The displacement driving component 2 includes a lead screw 21, which is rotatably disposed in the cavity and is equipped with a drive motor 22. The drive motor 22 is a servo drive motor of the prior art. The support 12 is connected to the inside of the support 12 via a lead screw bearing seat. The lead screw 21 is connected to the drive motor 22 via a coupling. A bearing seat 23 is installed on the lead screw 21. The support 12 has slots 121 extending into the cavity on both sides. The bearing seat 23 has a protrusion and passes through the slot 121 to connect to a receiving plate 24. When the lead screw 21 rotates with the cooperation of the drive motor 22, the receiving plate 24 can move vertically in the direction of rotation of the lead screw 21. This structure utilizes the high-precision positioning characteristics of the lead screw drive to ensure accurate alignment between the grinding area and the part of the syringe to be processed, avoiding uneven grinding caused by positional deviation. A receiving plate 24 is provided with a storage seat 241. The storage seat 241 is provided with two sets of spaced slots. A grinding component 3 is provided in the slots. The grinding component 3 includes a first motor component 31. The first motor component 31 is located in the slot and connected to a rotating shaft 32. The first motor component 31 is a servo drive motor 22 in the prior art, which provides power for the rotation of the rotating shaft 32. Part of the rotating shaft 32 is located outside the storage seat 241 and is equipped with a grinding roller 33. A grinding area for the syringe is formed between the two sets of grinding rollers 33. With the symmetrical distribution of the grinding rollers 33, when the syringe rotates, the grinding rollers 33 can evenly grind the surface of the syringe, ensuring that every part of the syringe surface is ground to the same degree, thereby ensuring the uniformity of the grinding of the syringe surface. A dust collection assembly 4 is provided on one side of the platform 1. The dust collection assembly 4 includes a dust collection box 41, which is located on the side of the platform 1 away from the first guide rail seat 11. The dust collection box 41 has an opening 411. A screen plate 42 is inclinedly arranged inside the dust collection box 41, with a portion of the screen plate 42 located outside the dust collection box 41. A fan component 43 is provided at the bottom of the dust collection box 41, with the output end of the fan component 43 facing the screen plate 42. When the fan component 43 is working, it generates a strong airflow. This airflow creates negative pressure inside the dust collection box 41. The presence of the inclined screen plate 42 makes... When the airflow passes through the screen plate 42, it forms an oblique flow direction, which avoids the accumulation of debris on the screen plate 42 and effectively prevents the screen plate 42 from being blocked. The top of the dust collection box 41 is equipped with a first tube 412, and the two sides of the storage seat 241 have guide seats 44. The guide seats 44 are connected to a second tube 441 and communicate with the first tube 412. During the grinding process, the generated debris is quickly sucked into the guide seat 44 under the action of negative pressure, and then through the second tube 441 and the first tube 412, and finally sucked into the dust collection box 41.

[0020] Based on the above structure, when the device starts working, the syringe is firmly fixed on the carrier chuck 112, and the tray 111 moves along the first guide rail seat 11, driving the syringe to slowly enter the grinding area between the two sets of grinding rollers 33. During this process, the first motor component 31 drives the grinding rollers 33 to rotate at high speed. When the displacement driving component 2 drives the receiving plate 24 to move, the two sets of grinding components 3 are located on both sides of the syringe to grind the surface of the syringe. At the same time, the fan component 43 starts working, forming a negative pressure in the dust collection box 41 and transmitting it to the second tube 441 through the first tube 412. Under the action of the negative pressure, the debris generated by grinding enters the second tube 441 through the guide seat 44, and then is sucked into the dust collection box 41 through the first tube 412. In the dust collection box 41, the screen plate 42 intercepts the debris, completing the separation of debris from air.

[0021] In one embodiment, reference is made to Figure 1 and Figure 3 It also includes a crushing component 5, which includes a crushing box 51. The crushing box 51 is located on one side of the platform 1 and below the screen plate 42. The position of the crushing box 51 allows the chips to fall directly from the screen plate 42 to the crushing box 51. A shaft 52 is rotatably installed inside the crushing box 51. One end of the shaft 52 extends to the outside of the crushing box 51 and is equipped with a second motor 53. A pressure roller 521 is installed on the shaft 52. This solves the problem of processing after chip collection and improves the stability and resource utilization of the chip removal system. After the chips generated by grinding are filtered by the screen plate 42 of the dust collection box 41, they slide into the crushing box 51 below along the inclined screen plate 42. The second motor 53 drives the shaft 52 to drive the pressure roller 521 to rotate, which can crush large pieces and strips of metal chips into fine particles, making it easier to collect and recycle the crushed fine chips. The outer periphery of the pressure roller 521 is provided with a tip 5211. Several tips 5211 are provided and are evenly distributed along the circumference of the pressure roller 521. The tips 5211 can enhance the piercing and shearing force of the pressure roller 521 on large chips, improve the crushing efficiency, avoid the situation that large chips cannot be crushed, and the evenly distributed tips 5211 ensure uniform crushing, further optimizing the smoothness of the chip removal system.

[0022] In one embodiment, reference is made to Figure 2 , Figure 3 and Figure 4 The bottom of the empty slot is provided with a slot 121 that penetrates the storage seat 241. Part of the rotating shaft 32 is located in the slot 121. A sliding groove 2411 is also provided on one side of the storage seat 241. Two sets of symmetrically distributed first push rod components 6 are provided on the outer side of the storage seat 241. The first push rod components 6 adopt the pneumatic push rod or hydraulic push rod in the prior art. A connecting part 61 is installed on the piston end of the first push rod component 6. Part of the connecting part 61 passes through the sliding groove 2411 and is connected to the first motor component 31. The sliding groove 2411 plays a limiting support role, so that the connecting part 61 can only move within the sliding groove 2411. By extending and retracting the piston end of the first push rod component 6, the connecting part 61 drives the grinding components 3 to be distributed at intervals along the length direction of the slide groove 2411. By moving the two sets of grinding components 3 closer or further apart, the grinding area expands or shrinks, improving the adaptability and grinding accuracy of the device. In terms of adaptability, the traditional fixed-gap grinding rollers 33 can only be adapted to a single specification of syringe, while this design can precisely adjust the range of the grinding area according to parameters such as the diameter and length of the syringe. The extension and retraction stroke of the first push rod component 6 has high control accuracy, which can achieve precise positioning of the grinding rollers 33, ensuring that the contact pressure between the two sets of grinding rollers 33 and the surface of the syringe is uniform, avoiding over-grinding or omission on one side, and making the surface roughness of the syringe consistent. At the same time, the grinding components 3 have strong stability when moving along the slide groove 2411, and there will be no deviation or shaking, further ensuring the grinding accuracy. By flexibly adjusting the grinding area, the overall applicability and flexibility of the equipment are improved.

[0023] In one embodiment, reference is made to Figure 1, Figure 2 and Figure 5 The platform 1 is also equipped with a transmission component 13, which includes a transmission motor 131 and a driven shaft 132. The transmission motor 131 adopts a servo drive motor 22 in the prior art. The transmission motor 131 and the driven shaft 132 are distributed at intervals in the platform 1. The output end of the transmission motor 131 is connected to a first pulley 1311. A second pulley 1321 is installed on the driven shaft 132. A synchronous belt 133 is connected between the first pulley 1311 and the second pulley 1321. Through the cooperation of the synchronous belt 133, the first pulley 1311 can drive the second pulley 1321 to rotate synchronously when it rotates. The tray 111 is connected to the synchronous belt 133. When the synchronous belt 133 is driven to rotate by the cooperation of the drive motor 131 and the driven shaft 132, the tray 111 drives the bearing chuck 112 to move relative to it. In terms of movement accuracy, the synchronous belt 133 transmission has the characteristics of accurate transmission ratio and no slippage. The drive motor 131 drives the first pulley 1311 to rotate, and the synchronous belt 133 drives the second pulley 1321 and the driven shaft 132 to rotate synchronously, thereby driving the tray 111 connected to the synchronous belt 133 to move smoothly. This transmission method can ensure that the tray 111 moves at a uniform speed and with accurate position, avoiding the deviation and jamming that may occur in manual movement or other transmission methods, so that the syringe can accurately enter the preset position of the grinding area and ensure the uniformity of grinding.

[0024] In one embodiment, reference is made to Figure 1 , Figure 2 and Figure 6 The receiving plate 24 is also provided with two sets of symmetrically distributed second guide rail seats 242. Part of the flow guide seat 44 is movable on the second guide rail seat 242, thereby realizing the adjustment of the position of the flow guide seat 44. In terms of targeted chip suction, the flow guide seat 44 is connected to the second tube 441 and communicates with the first tube 412 of the dust collection box 41, which is the key channel for chips to enter the dust collection box 41. Since the position of chip generation will change when grinding different specifications of syringes or different parts of syringes, the flow guide seat 44 can move flexibly along the second guide rail seat 242, so that the suction port of the second tube 441 can be accurately aligned with the chip generation point, shortening the chip suction path and improving chip suction efficiency. Moreover, the second guide rail seat 242 provides a stable moving track for it, and there will be no jamming or deviation during adjustment, which can achieve precise positioning.

[0025] In one embodiment, reference is made to Figure 1 and Figure 3The vacuuming assembly 4 also includes a switch adjustment component 45, which includes a second push rod component 451. The second push rod component 451 is a pneumatic push rod or a hydraulic push rod in the prior art. The second push rod component 451 is disposed on one side of the vacuuming box 41 and located above the opening 411. The output end of the second push rod component 451 is connected to a baffle component 452. Through the extension and retraction of the second push rod component 451, the baffle component 452 moves closer to or further away from the screen plate 42. When the baffle component 452 abuts against the screen plate 42, it covers the opening 411. After the baffle component 452 closes, the dust collection box 41 forms a closed space, allowing chips to accumulate inside. This solves the sealing and cleaning problems during chip collection, improving the operational safety and environmental cleanliness of the equipment. Regarding the sealing effect, during the grinding process, the second push rod component 451… When the screen plate 42 is closed, the baffle 452 moves away from the screen plate 42, and the opening 411 of the dust collection box 41 opens, allowing the chips to pass smoothly through the screen plate 42 into the dust collection box 41. When grinding is paused, the second push rod 451 extends, causing the baffle 452 to abut against the screen plate 42, completely covering the opening 411. This prevents the chips in the dust collection box 41 from overflowing or flying, keeping the working environment clean. This design effectively avoids the problem of chip scattering caused by the long-term open opening 411 in traditional dust collection devices, reduces the impact on the health of operators, and lowers the cleaning costs of the workshop.

[0026] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] Those skilled in the art should understand that the above embodiments are merely for illustrative purposes and are not intended to limit the scope of this application. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of this application.

Claims

1. A cylindrical syringe polishing device with chip removal function, comprising a base, a first guide rail seat being provided on the base, a tray being movably disposed on the first guide rail seat and a support chuck for placing syringes being installed thereon, characterized in that: A support is provided on one side of the pedestal and located on one side of the first guide rail seat. The support has a cavity and a displacement driving component is installed therein. The displacement driving component includes a lead screw, which is rotatably disposed in the cavity and is equipped with a drive motor. A bearing seat is installed on the lead screw. The support has slots extending into the cavity on both sides. The bearing seat has a protrusion and a receiving plate is connected through the slot. The receiving plate is provided with a storage seat, the storage seat is provided with two sets of spaced-apart slots, the slots are provided with a grinding component, the grinding component includes a first motor component, the first motor component is located in the slot and connected to a rotating shaft, part of the rotating shaft is located outside the storage seat and is equipped with a grinding roller, and a grinding area for the syringe is formed between the two sets of grinding rollers. A dust collection assembly is provided on one side of the platform. The dust collection assembly includes a dust collection box, which is located on the side of the platform away from the first guide rail seat. The dust collection box has an opening, and a screen plate is inclinedly arranged inside the dust collection box. A portion of the screen plate is located outside the dust collection box. A fan component is provided at the bottom of the dust collection box, with the output end of the fan component facing the screen plate. A first pipe is installed on the top of the dust collection box. Guide seats are provided on both sides of the platform, and a second pipe is connected to the guide seat and communicates with the first pipe.

2. The circular knitting needle barrel grinding device with chip removal function according to claim 1, characterized in that: It also includes a crushing assembly, which includes a crushing chamber located on one side of the platform and below the screen plate; A shaft is rotatably mounted inside the crushing chamber. One end of the shaft extends to the outside of the crushing chamber and is fitted with a second motor. A pressure roller is mounted on the shaft.

3. The circular knitting needle barrel grinding device with chip removal function according to claim 1, characterized in that: The bottom of the empty slot is provided with a slot that passes through the storage base, part of the rotating shaft is located in the slot, and a sliding groove is also provided on one side of the storage base. Two sets of symmetrically distributed first push rod components are provided on the outer side of the storage seat. The piston end of the first push rod component is equipped with a connecting part, and part of the connecting part passes through the slide groove and connects to the first motor component. By extending and retracting the piston end in the first push rod component, the connecting part drives the grinding components to be distributed at intervals along the length direction of the slide groove. As the two sets of grinding components move closer or further apart, the grinding area expands or shrinks.

4. The circular knitting needle barrel polishing device with chip removal function according to claim 1, characterized in that: The platform is also provided with a transmission component, which includes a transmission motor and a driven shaft. The transmission motor and the driven shaft are spaced apart in the platform. The output end of the transmission motor is connected to a first pulley, and a second pulley is mounted on the driven shaft. A synchronous belt is connected between the first pulley and the second pulley. Part of the tray is connected to the timing belt. When the timing belt is rotated by the cooperation of the drive motor and the driven shaft, the tray drives the bearing chuck to move relative to it.

5. The circular knitting needle barrel grinding device with chip removal function according to claim 1, characterized in that: The receiving plate is also provided with two sets of second guide rail seats that are symmetrically distributed at intervals. The flow guide seat is partially movable on the second guide rail seat, thereby realizing the adjustment of the flow guide seat position.

6. The circular knitting needle barrel grinding device with chip removal function according to claim 1, characterized in that: The vacuuming assembly further includes a switch adjustment component, which includes a second push rod component disposed on one side of the vacuuming box and above the opening; The output end of the second push rod component is connected to a baffle. By extending and retracting the second push rod component, the baffle can move closer to or further away from the screen plate. When the baffle comes into contact with the screen plate, the opening of the baffle is covered.

7. The circular knitting needle barrel grinding device with chip removal function according to claim 2, characterized in that: The outer periphery of the pressure roller is provided with a pointed portion, and several pointed portions are provided and evenly distributed along the circumferential direction of the pressure roller.

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