Follow-up nozzle mechanism of grinding machine

Abstract

The utility model discloses a follow-up nozzle mechanism of a grinding machine, and aims to overcome the defect that in the prior art, when a cooling nozzle needs to be replaced, the machine needs to be stopped firstly, and then the cooling nozzle is replaced manually, so that the production efficiency is reduced. According to the technical scheme, the automatic nozzle replacing device comprises a servo transmission mechanism, an automatic nozzle replacing mechanism arranged at the movable end of the servo transmission mechanism and a library for storing different types of nozzles. According to the cooling nozzle replacement device, the cooling nozzle can be automatically replaced, the steps of shutdown for replacement of the cooling nozzle and the like are omitted, the efficiency of replacement of the cooling nozzle is effectively improved, and then the production efficiency is improved; moreover, a plurality of cooling nozzles of different types and models can be arranged on the nozzle library, so that the cooling nozzles can be replaced according to actual production requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of grinder nozzles, and more particularly to a grinder follower nozzle mechanism. Background Art

[0002] The rapid development of industry has placed higher demands on the accuracy of complex precision parts, and profile grinding of complex parts is a very important way to achieve the accuracy of complex parts. When grinding complex parts, while achieving accuracy, its production cycle is also very important. Therefore, grinding centers that can adapt to various complex parts have also come into being. In addition to requiring different grinding wheels and diamond rollers for different surface grinding, different cooling nozzles are also required. In the existing technology, the method of replacing the cooling nozzle is complicated and requires stopping the machine to replace the cooling nozzle, which reduces production efficiency.

[0003] Chinese patent announcement number CN218697662U, announcement date March 24, 2023, the name of the invention is a cooling device for a CNC grinder for tool processing, the application discloses a cooling device for a CNC grinder for tool processing, mainly including a liquid storage tank and a support cover, the support cover is fixedly arranged on the top of the liquid storage tank, one side of the top of the liquid storage tank is fixedly interspersed with a liquid inlet hopper, the bottom end of the liquid inlet hopper is fixedly connected to one side of the top of the liquid storage tank, the top of the support cover is provided with a CNC grinder body, one side of the liquid storage tank is fixedly connected to a first L-shaped pipe, one side of the support cover is fixedly provided with a circulating pump, and the inlet end of the circulating pump is fixedly connected to one end of the first L-shaped pipe. In the above patent, when the cooling nozzle needs to be replaced, the machine needs to be shut down and the cooling nozzle needs to be replaced, which reduces the production efficiency. Utility Model Content

[0004] The utility model overcomes the shortcomings of the prior art that when the cooling nozzle needs to be replaced, the machine must be stopped first and then the cooling nozzle must be replaced manually, which reduces production efficiency. The utility model provides a grinder follow-up nozzle mechanism, which can automatically replace the cooling nozzle and can automatically replace different types of cooling nozzles according to needs.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a grinder follower nozzle mechanism, comprising: a servo transmission mechanism, an automatic nozzle replacement mechanism arranged on the movable end of the servo transmission mechanism, and a nozzle library for storing different types of nozzles.

[0006] In the utility model, the cooling nozzle can be automatically replaced, eliminating the steps of stopping the machine to replace the cooling nozzle, effectively improving the efficiency of replacing the cooling nozzle, and thus improving the production efficiency; and, a number of cooling nozzles of different types and models can be set on the nozzle library, so that the cooling nozzle can be replaced according to actual production needs.

[0007] Preferably, the automatic replacement mechanism includes a self-locking mounting frame and a nozzle holder mounted on the self-locking mounting frame; a nozzle head that cooperates with the cooling nozzle is provided at the bottom of the nozzle holder; a through hole is provided through the nozzle holder along its length direction, and a nozzle ejector rod is provided in the through hole; the ejection device drives the nozzle ejector rod to move along the through hole.

[0008] When the ejection device is working, it pushes the nozzle ejector rod downward, so that the bottom end of the nozzle ejector rod is connected to the connecting hole, and the coolant flows in from the water inlet pipe, flows through the nozzle ejector rod into the connecting hole, and finally the coolant is ejected from the cooling nozzle.

[0009] Preferably, the ejection device includes a hinge connection mechanism and a self-locking cylinder arranged on a self-locking mounting frame, the input end of the hinge connection mechanism is connected to the movable end of the self-locking cylinder, and the other end of the hinge connection mechanism is connected to the nozzle ejector rod.

[0010] The piston rod on the self-locking cylinder contracts, causing the second hinge shaft connected to it to move upward, causing the V-shaped hinge frame to rotate as a whole around the first hinge shaft, thereby driving the hinge rod to move upward, and the hinge rod drives the nozzle push rod to move upward, so that the bottom end of the nozzle push rod is separated from the cooling nozzle, and the nozzle push rod loses its abutment effect on the cooling nozzle. At the same time, the bottom of the nozzle push rod is separated from the connecting hole of the cooling nozzle.

[0011] Preferably, the nozzle ejector rod is hollow, a cooling joint is provided at one end of the nozzle ejector rod, a connecting hole is provided on the cooling nozzle, and the ejection device pushes the nozzle ejector rod outward to connect with the connecting hole.

[0012] The bottom end of the nozzle top rod is connected to the connecting hole, and the coolant flows in from the water inlet pipe, flows through the nozzle top rod and enters the connecting hole, and finally the coolant is sprayed out from the cooling nozzle, so that the coolant can be sprayed out smoothly.

[0013] Preferably, the servo transmission mechanism includes a horizontal transmission device and a vertical transmission device, and the vertical transmission device is arranged on the horizontal transmission device.

[0014] The cooperation of the vertical transmission device and the horizontal transmission device enables the movement of the automatic changing mechanism at different positions to be controlled.

[0015] Preferably, the horizontal transmission device includes a connecting seat, a horizontal guide rod arranged on the connecting seat, a horizontal sliding seat slidingly arranged on the horizontal guide rod, and a horizontal ball screw pair cooperating with the horizontal sliding seat is arranged at the end of the horizontal guide rod; a horizontal driving device for driving it to rotate is arranged at the end of the horizontal ball screw pair.

[0016] Through the cooperation between the horizontal servo motor, the horizontal reducer and the horizontal ball screw pair, the sliding position of the horizontal sliding seat can be controlled more accurately.

[0017] Preferably, the vertical transmission device includes a vertical guide rod sliding along the horizontal sliding seat, and one end of the vertical guide rod is provided with a second mounting block connected to the automatic replacement mechanism; a vertical transmission block is provided on the vertical guide rod, and a vertical ball screw pair cooperating with it is provided on the vertical transmission block, and a vertical drive device for driving it to rotate is provided at the end of the vertical ball screw pair.

[0018] Through the cooperation between the vertical servo motor, the vertical reducer and the vertical ball screw pair, the sliding position of the horizontal sliding seat can be controlled more accurately.

[0019] Preferably, the nozzle library includes a mounting base and a linear drive device arranged on the mounting base. The movable end of the linear drive device is provided with a beam plate, and the two ends of the beam plate are respectively provided with a driving wheel and a driven wheel. The driving wheel is connected to the output end of the active drive device, and a synchronous belt is wound around the driving wheel and the driven wheel, and a number of nozzle placement seats are provided on the synchronous belt.

[0020] The synchronous belt is arranged in a horizontal direction, and the nozzle placement seat is arranged in a vertical direction, so that different types of cooling nozzles can be freely replaced.

[0021] Preferably, a nozzle placement groove is provided on the nozzle placement seat, and placement notches are provided at both ends of the top of the nozzle placement groove; a placement block is provided on the cooling nozzle, the thickness of the placement block matches the nozzle placement groove, and placement cams are provided at both ends in the thickness direction of the placement block, and the placement cams match the placement notches.

[0022] When the cooling nozzle is placed on the nozzle placement seat, the placement block is set in the nozzle placement groove, the side wall of the placement block and the nozzle placement groove overlap, and the placement protrusions and placement notches at both ends match, so that the cooling nozzle is hung on the nozzle placement seat.

[0023] Preferably, the linear drive device includes a linear drive cylinder arranged on the mounting base, and a linear guide rail arranged on the mounting base; a linear guide block is slidably arranged on the linear guide rail, and the linear guide block is fixedly connected to the beam plate; the linear guide block is connected to the output end of the linear drive cylinder.

[0024] The linear guide block is connected to the output end of the linear drive cylinder, and the linear drive cylinder drives the linear guide block to slide along the linear guide rail, so that the linear guide rail can drive the beam plate to move along a straight line.

[0025] Compared with the existing technology, the beneficial effects of the present invention are: it can automatically replace the cooling nozzle, eliminating the steps of stopping the machine to replace the cooling nozzle, effectively improving the efficiency of replacing the cooling nozzle, and thus improving the production efficiency; and, a number of cooling nozzles of different types and models can be set on the nozzle library, so that the cooling nozzle can be replaced according to actual production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a structural diagram of the servo transmission mechanism of the utility model;

[0028] Figure 3 It is a structural diagram of the automatic replacement mechanism of the utility model;

[0029] Figure 4 This is a schematic diagram of the internal structure of the automatic replacement mechanism of the utility model;

[0030] Figure 5 This is a schematic diagram of the cooperation between the servo transmission mechanism and the automatic replacement mechanism of the utility model;

[0031] Figure 6 It is a structural diagram of the nozzle library of the utility model;

[0032] Figure 7 yes Figure 6 A partial enlarged view of the

[0033] Figure 8 This is a structural diagram of the nozzle library of the utility model from another perspective;

[0034] In the figure: 1. Servo transmission mechanism, 11. Horizontal transmission device, 111. Connecting seat, 112. Horizontal guide rod, 113. First mounting block, 114. Horizontal ball screw, 115. Horizontal reducer, 116. Horizontal servo motor, 12. Vertical transmission device, 121. Vertical guide rod, 122. Second mounting block, 123. Vertical transmission block, 124. Vertical ball screw, 125. Vertical reducer, 126. Vertical servo motor, 13. Horizontal sliding seat, 131. Horizontal sliding seat hole, 132. Dust ring, 133. Vertical sliding seat hole;

[0035] 2. Automatic replacement mechanism, 21. Self-locking mounting bracket, 211. Self-locking mounting block, 22. Nozzle holder, 221. Nozzle head, 222. Through hole, 23. Nozzle ejector rod, 24. Cooling joint, 25. Water inlet pipe, 26. Self-locking cylinder, 27. V-shaped articulated bracket, 271. First articulated axis, 272. Second articulated axis, 273. Articulated rod,

[0036] 3. Nozzle library, 31. Mounting base, 32. Linear drive cylinder, 33. Linear guide rail, 34. Linear guide block, 341. Third mounting block, 35. Beam plate, 351. First servo motor, 352. First reducer, 36. Driving pulley, 37. Driven pulley, 38. Synchronous belt;

[0037] 4. Cooling nozzle, 41. Nozzle chute, 42. Placement block, 43. Placement cam, 44. Connection hole;

[0038] 5. Nozzle placement seat, 51. Nozzle placement groove, 52. Placement notch. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0040] Example 1: Reference Figures 1 to 8 As shown, a follow-up nozzle mechanism for a grinding machine mainly includes: a servo transmission mechanism 1, an automatic changing mechanism 2 and a nozzle library 3. The automatic changing mechanism is fixedly arranged on the movable end of the servo transmission mechanism 1. The automatic changing mechanism is driven by the servo transmission mechanism 1 so that the automatic changing mechanism can move freely; the nozzle library 3 is used to store cooling nozzles 4 of different types and models, so that different types and models of cooling nozzles 4 can be replaced according to needs.

[0041] The servo transmission mechanism 1 can be replaced by a four-axis robot. In this embodiment, the servo transmission mechanism 1 mainly includes a horizontal transmission device 11 and a vertical transmission device 12. The vertical transmission device 12 is arranged on the horizontal transmission device 11, and the automatic replacement mechanism is arranged on the vertical transmission device 12. Through the cooperation between the vertical transmission device 12 and the horizontal transmission device 11, the movement of the automatic replacement mechanism at different positions can be controlled.

[0042] Horizontal transmission device 11: The horizontal transmission device 11 mainly includes a connecting seat 111 and a horizontal guide rod 112 fixedly mounted on the connecting seat 111. The connecting seat 111 is arranged in the vertical direction. A transverse sliding seat 13 is slidably mounted on the horizontal guide rod 112. The transverse sliding seat 13 is provided with a horizontal sliding seat hole 131 extending therethrough. The horizontal sliding seat hole 131 cooperates with the horizontal guide rod 112. In order to improve the sliding stability of the transverse sliding seat 13, the horizontal guide rod 112 is provided as two parallel guide rods. An oil-free bearing is provided in the horizontal sliding seat hole 131 to improve the sliding precision. A dust ring 132 is provided at the end of the horizontal sliding seat hole 131. One end of the horizontal guide rod 112 is fixedly connected to the connecting seat 111, and the other end of the horizontal guide rod 112 is fixedly connected to the first mounting block 113. The first mounting block 113 is provided with a pair of horizontal ball screws 114 that cooperate with the transverse sliding seat 13. The horizontal ball screw 114 and the transverse sliding seat 13 cooperate to form a ball screw transmission pair; a horizontal drive device is provided on the first mounting block 113. In this embodiment, the horizontal drive device comprises a horizontal reducer 115 and a horizontal servo motor 116, which are arranged at the end of the horizontal ball screw 114. The output end of the horizontal servo motor 116 cooperates with the input end of the horizontal reducer 115, and the output end of the horizontal reducer 115 is connected to the horizontal ball screw 114. The cooperation between the horizontal servo motor 116, the horizontal reducer 115, and the horizontal ball screw 114 pair enables more precise control of the sliding position of the transverse sliding seat 13.

[0043] Vertical transmission device 12: The vertical transmission device 12 includes a vertical guide rod 121 that slides along the horizontal sliding seat 13. A vertical sliding seat hole 133 is provided on the horizontal sliding seat 13. The vertical guide rod 121 is slidably set in the vertical sliding seat hole 133. The bottom end of the vertical guide rod 121 is provided with a second mounting block 122 connected to the automatic changing mechanism. The top of the vertical guide rod 121 is provided with a vertical transmission block 123. The vertical transmission block 123 is provided with a pair of vertical ball screws 124 that cooperate with it. The ball screw is passed through the vertical transmission block 123. The vertical ball screw 124 and the vertical transmission block 123 cooperate to form a pair of vertical ball screws 124; a vertical driving device is provided on the top of the horizontal sliding seat 13, and the vertical driving device drives the vertical ball screw 124 to rotate. The vertical driving device in this embodiment is a vertical reducer 125 and a vertical servo motor 126 arranged on the top of the horizontal sliding seat 13. The output end of the vertical servo motor 126 is matched with the input end of the vertical reducer 125, and the output end of the vertical reducer 125 is connected to the vertical ball screw 124; through the cooperation between the vertical servo motor 126, the vertical reducer 125 and the vertical ball screw 124, the sliding position of the horizontal sliding seat 13 can be controlled more accurately.

[0044] Automatic replacement mechanism: The automatic replacement mechanism includes a self-locking mounting frame 21 and a nozzle holder 22 mounted on the self-locking mounting frame 21. The self-locking mounting frame 21 is provided with a self-locking mounting block 211, which is fixedly connected to the second mounting block 122 by bolts. A nozzle head 221 is provided at the bottom of the nozzle holder 22, which cooperates with the cooling nozzle 4. The nozzle holder 22 is provided with a through hole 222 along its length, and a nozzle ejector 23 is provided within the through hole 222. The nozzle ejector 23 slides within the through hole 222. The ejection device drives the nozzle ejector 23 to move along the through hole 222. The nozzle ejector 23 is hollow, and a cooling joint 24 is provided at one end of the nozzle ejector 23. The cooling structure is connected to the water inlet pipe 25. The cooling nozzle 4 is provided with a connecting hole 44, and a nozzle slide 41 that cooperates with the nozzle holder 22 is provided on the cooling nozzle 4. The nozzle holder 22 slides on the nozzle slide 41, and the connecting hole 44 is located at the top of the nozzle slide 41. When the ejection device is working, it pushes the nozzle ejector rod 23 downward, so that the bottom end of the nozzle ejector rod 23 is connected to the connecting hole 44, and the coolant flows in from the water inlet pipe 25, flows through the nozzle ejector rod 23 and enters the connecting hole 44, and finally the coolant is sprayed out from the cooling nozzle 4.

[0045] Ejector: The ejector can be configured as a cylinder structure, requiring only the output end of the cylinder to be connected to the top of the nozzle ejector rod 23, with the cylinder controlling the ejection of the nozzle ejector rod 23. To enhance the stability of the overall structure and ensure greater stability when the nozzle ejector rod 23 and the connection hole 44 abut against each other, the ejector device in this embodiment includes a hinge connection mechanism and a self-locking cylinder 26 disposed on the self-locking mounting bracket 21. The input end of the hinge connection mechanism is connected to the movable end of the self-locking cylinder 26, and the other end of the hinge connection mechanism is connected to the nozzle ejector rod 23. Specifically, the hinge connection mechanism includes a V-shaped hinge frame 27, and the two sides of the V-shaped hinge frame 27 are respectively a first hinge shaft 271 and a second hinge shaft 272. The first hinge shaft 271 is rotatably set on the nozzle frame, and the second hinge shaft 272 is rotatably connected to the self-locking cylinder 26. The bending part of the V-shaped hinge frame 27 is rotatably connected to the hinge rod 273. One end of the hinge rod 273 is rotatably connected to the V-shaped hinge frame 27, and the other end of the hinge rod 273 is rotatably connected to the nozzle top rod 23.

[0046] Nozzle library 3: The nozzle library 3 includes a mounting base 31 and a linear drive device mounted on the mounting base 31. The linear drive device includes a linear drive cylinder 32 mounted on the mounting base 31 and a linear guide rail 33 mounted on the mounting base 31. A linear guide block 34 is slidably mounted on the linear guide rail 33. The linear guide block 34 slides along the linear guide rail 33. A third mounting block 341 is mounted on the linear guide block 34. The third mounting block 341 is fixedly connected to the beam plate 35 via bolts. The linear guide block 34 is connected to the output end of the linear drive cylinder 32. The linear drive cylinder 32 drives the linear guide block 34 to slide along the linear guide rail 33, thereby driving the beam plate 35 to move along a straight line.

[0047] A driving wheel 36 and a driven wheel 37 are rotatably provided at both ends of one end surface of the beam plate 35. A first servo motor 351 and a first reducer 352 are provided on the back of the beam plate 35 to drive the driving wheel 36. The servo motor and the reducer are combined to form an active drive device. The output end of the active drive device is connected to the driving wheel 36, that is, the output end of the servo motor is connected to the input end of the reducer, and the output end of the reducer is connected to the driving wheel 36. A synchronous belt 38 is wound around the driving wheel 36 and the driven wheel 37. A plurality of nozzle placement seats 5 are provided on the synchronous belt 38. The synchronous belt 38 is arranged in the horizontal direction, and the nozzle placement seats 5 are arranged in the vertical direction.

[0048] The nozzle placement seat 5 is provided with a nozzle placement groove 51 arranged in a vertical direction, and placement notches 52 are provided at both ends of the top of the nozzle placement groove 51. A placement block 42 is provided protruding from the side wall of the upper end of the cooling nozzle 4. The thickness of the placement block 42 matches the nozzle placement groove 51. The placement protrusions 43 are provided at both ends of the thickness direction of the placement block 42, and the placement protrusions 43 match the placement notches 52. When the cooling nozzle 4 is placed on the nozzle placement seat 5, the placement block 42 is placed in the nozzle placement groove 51, the side walls of the placement block 42 overlap with the nozzle placement groove 51, and the placement protrusions 43 at both ends match the placement notches 52, so that the cooling nozzle 4 is hung on the nozzle placement seat 5.

[0049] The steps for automatically replacing the cooling nozzle 4 of the present invention are as follows:

[0050] 1. The servo motor of the nozzle bank 3 rotates, so that the empty nozzle placement seat 5 is in the cooling nozzle 4 replacement station;

[0051] 2. The horizontal transmission device 11 and the vertical transmission device 12 of the servo transmission mechanism 1 cooperate to move the cooling nozzle 4 on the automatic replacement mechanism to a preset position;

[0052] 3. The piston rod of the linear drive cylinder 32 of the nozzle library 3 extends, and the empty nozzle placement seat 5 moves to the position for replacing the cooling nozzle 4. At this time, the empty nozzle placement seat 5 is exactly below the automatic replacement mechanism, and the empty nozzle placement seat 5 is exactly below the cooling nozzle 4 of the automatic replacement mechanism. It is important to note that the movement of the nozzle library 3 will not interfere with the cooling nozzle 4;

[0053] 4. At this time, the vertical servo motor 126 of the vertical transmission device 12 is operated, causing the cooling nozzle 4 to move downward, so that the placement block 42 on the cooling nozzle 4 enters the nozzle placement groove 51 of the nozzle placement seat 5. The placement protrusions 43 and placement notches 52 at both ends cooperate with each other, so that the cooling nozzle 4 is hung on the nozzle placement seat 5;

[0054] 5. The piston rod on the self-locking cylinder 26 contracts, causing the second hinge shaft 272, which is rotatably connected thereto, to move upward, causing the V-shaped hinge frame 27 as a whole to rotate about the first hinge shaft 271, thereby driving the hinge rod 273 to move upward. The hinge rod 273 then drives the nozzle ejector rod 23 to move upward, causing the bottom end of the nozzle ejector rod 23 to separate from the cooling nozzle 4. The nozzle ejector rod 23 loses its contact with the cooling nozzle 4, and the bottom of the nozzle ejector rod 23 is separated from the connecting hole 44 of the cooling nozzle 4.

[0055] 6. Then the horizontal servo motor 116 operates in the horizontal direction, causing the nozzle holder 22 to slide out of the nozzle chute 41, so that the nozzle holder 22 and the cooling nozzle 4 are separated;

[0056] 7. The servo motor of the nozzle bank 3 rotates, causing the driving wheel 36 and the driven wheel 37 to drive the synchronous belt 38 to rotate, so that the cooling nozzle 4 to be replaced is placed in the nozzle replacement station;

[0057] 8. The horizontal servo motor 116 operates in the horizontal direction, so that the nozzle holder 22 slides into the nozzle chute 41 of the new cooling nozzle 4, so that the nozzle holder 22 and the new cooling nozzle 4 are in a matched state;

[0058] 9. The piston rod on the locking cylinder extends outward, causing the second hinge shaft 272, which is rotatably connected thereto, to move downward, causing the V-shaped hinge frame 27 as a whole to rotate about the first hinge shaft 271, thereby driving the hinge rod 273 to move downward. The hinge rod 273 drives the nozzle push rod 23 downward, causing the bottom end of the nozzle push rod 23 to abut against the cooling nozzle 4. The nozzle push rod 23 again abuts against the cooling nozzle 4, placing the nozzle seat 22 and the cooling nozzle 4 in a tightly connected state, thereby connecting the bottom of the nozzle push rod 23 to the connecting hole 44 of the cooling nozzle 4.

[0059] 10. The vertical servo motor 126 operates to drive the new cooling nozzle 4 below it to move upward, causing the placement block 42 to slide out of the nozzle placement groove 51, thereby separating the new cooling nozzle 4 from the nozzle placement seat 5;

[0060] 11. The piston rod of the linear drive cylinder 32 of the nozzle library 3 retracts, so that the beam plate 35, the driving wheel 36, the driven wheel, and the cooling nozzle 4 move to the avoidance position, thereby completing the automatic nozzle replacement.

[0061] Through the above steps, the cooling nozzle 4 can be automatically replaced, eliminating the steps of stopping the machine to replace the cooling nozzle 4, effectively improving the efficiency of replacing the cooling nozzle 4, and thus improving the production efficiency; and, several cooling nozzles 4 of different types and models can be set on the nozzle library 3, so that the cooling nozzle 4 can be replaced according to actual production needs.

[0062] The above-described embodiments are only preferred solutions of the present invention and do not limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A grinder follower nozzle mechanism, characterized in that: include: A servo transmission mechanism, an automatic nozzle changing mechanism arranged on the movable end of the servo transmission mechanism, and a nozzle library storing different types of nozzles.

2. The grinder follower nozzle mechanism according to claim 1, characterized in that: The automatic replacement mechanism includes a self-locking mounting frame and a nozzle seat installed on the self-locking mounting frame; a nozzle head that cooperates with the cooling nozzle is arranged at the bottom of the nozzle seat; a through hole is arranged through the nozzle seat along its length direction, and a nozzle ejector rod is arranged in the through hole; and the ejection device drives the nozzle ejector rod to move along the through hole.

3. The grinder follower nozzle mechanism according to claim 2, characterized in that: The ejection device comprises a hinge connection mechanism and a self-locking cylinder arranged on a self-locking mounting frame, the input end of the hinge connection mechanism is connected to the movable end of the self-locking cylinder, and the other end of the hinge connection mechanism is connected to the nozzle ejector rod.

4. The grinder follower nozzle mechanism according to claim 1 or 2, characterized in that: The nozzle ejector rod is hollow, one end of the nozzle ejector rod is provided with a cooling joint, a connecting hole is provided on the cooling nozzle, and an ejection device pushes the nozzle ejector rod outward to be connected with the connecting hole.

5. The grinder follower nozzle mechanism according to claim 1, characterized in that: The servo transmission mechanism comprises a horizontal transmission device and a vertical transmission device, and the vertical transmission device is arranged on the horizontal transmission device.

6. The grinder follower nozzle mechanism according to claim 5, characterized in that: The horizontal transmission device includes a connecting seat, a horizontal guide rod arranged on the connecting seat, a horizontal guide rod slidably provided with a transverse sliding seat, the end of the horizontal guide rod is provided with a horizontal ball screw pair that cooperates with the transverse sliding seat; the end of the horizontal ball screw pair is provided with a horizontal driving device that drives it to rotate.

7. The grinder follower nozzle mechanism according to claim 6, characterized in that: The vertical transmission device includes a vertical guide rod sliding along the horizontal sliding seat, one end of the vertical guide rod is provided with a second mounting block connected to the automatic replacement mechanism; a vertical transmission block is provided on the vertical guide rod, and a vertical ball screw pair cooperating with the vertical transmission block is provided on the vertical transmission block, and a vertical driving device for driving the vertical ball screw pair to rotate is provided at the end of the vertical ball screw pair.

8. The grinder follower nozzle mechanism according to claim 1 or 2 or 5 or 6 or 7, characterized in that: The nozzle library includes a mounting base and a linear drive device arranged on the mounting base. A beam plate is arranged at the movable end of the linear drive device. A driving wheel and a driven wheel are arranged at both ends of the beam plate. The driving wheel is connected to the output end of the active drive device. A synchronous belt is wound around the driving wheel and the driven wheel, and a plurality of nozzle placement seats are arranged on the synchronous belt.

9. The grinder follower nozzle mechanism according to claim 8, characterized in that: A nozzle placement groove is provided on the nozzle placement seat, and placement notches are provided at both ends of the top of the nozzle placement groove; a placement block is provided on the cooling nozzle, the thickness of the placement block matches the nozzle placement groove, and placement convex shafts are provided at both ends of the thickness direction of the placement block, and the placement convex shafts match the placement notches.

10. The grinder follower nozzle mechanism according to claim 8, characterized in that: The linear drive device includes a linear drive cylinder arranged on a mounting base, and a linear guide rail arranged on the mounting base; a linear guide block is slidably arranged on the linear guide rail, and the linear guide block is fixedly connected to the beam plate; the linear guide block is connected to the output end of the linear drive cylinder.

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