Soldering flux grinding machine

Abstract

The invention relates to the technical field of grinding devices, in particular to a scaling powder grinding machine which comprises a rack, a grinding assembly, a scraping plate, a baffle, a switching mechanism, a distance adjusting assembly and a control system. A first position, a second position and a third position are arranged on the rack; the grinding assembly comprises the three grinding rollers which are rotationally installed at three positions correspondingly, the positions of the three grinding rollers are changed through the switching mechanism, and therefore the problems that in the prior art, the grinding effect is poor, and the abrasion degrees of a plurality of rollers are inconsistent are solved, and the service life of the grinding machine is prolonged. The grinding roller located at the second position is driven by the moving assembly to move left and right in a reciprocating mode, acting force in the left-right direction is applied to the scaling powder, the scaling powder is fully ground, and meanwhile the grinding efficiency of the scaling powder is improved. The scraping plate is arranged to be in a wave shape and swings left and right, and the problems that scaling powder is accumulated and the scraping effect is poor when the scraping plate deforms are solved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, in particular to a flux grinding machine. Background Art

[0002] In the production process of flux, the prepared flux raw materials need to be mixed evenly in a certain proportion, and then the mixed flux raw materials are placed in the grinding equipment, and the materials are ground by adjusting the parameters such as the speed and gap of the rollers. Finally, the ground flux is filtered to remove impurities and particles. In the grinding process, a grinder is needed, among which a three-roll grinder is a commonly used flux grinding equipment. The material is repeatedly squeezed and sheared by three rollers to achieve a grinding effect. However, the three-roll grinder in the prior art has a large amount of residual material on the discharge plate after grinding.

[0003] To this end, the Chinese patent document with the authorization announcement number CN220091555U discloses a three-roller grinding machine, which scrapes the residual material on the discharge plate through a scraper box. However, the three rollers of the three-roller machine in the above patent and the prior art are subjected to inconsistent forces, which will lead to inconsistent wear on the surfaces of the three rollers, thereby affecting the subsequent grinding effect; and the rollers only apply extrusion force to the material, and the particles in the material cannot be fully ground after being flattened, resulting in insufficient grinding and low grinding efficiency. Summary of the invention

[0004] According to the deficiencies of the prior art, the present invention proposes a flux grinder, which solves the problems of insufficient grinding, low grinding efficiency and inconsistent wear degrees of multiple rollers in the prior art.

[0005] A flux grinding machine of the present invention adopts the following technical solution, including: A frame, on which a first position, a second position and a third position are arranged in sequence from back to front; The grinding assembly comprises three grinding rollers, the axes of the grinding rollers extending in the left-right direction; the three grinding rollers are respectively installed at a first position, a second position and a third position; the grinding rollers are rotatably installed on the frame; each grinding roller is connected to a driving assembly, and the driving assembly is used to drive the grinding roller to rotate around its own axis; A scraper is obliquely arranged on the front side of the frame, the rear side of the scraper abuts against the grinding roller at the third position, and the rear end of the scraper is higher than the front end; A switching mechanism is used to make the grinding roller originally located at the first position reach the second position, make the grinding roller originally located at the second position reach the third position, and make the grinding roller originally located at the third position reach the first position; A distance adjustment component, used for adjusting the distance between two adjacent grinding rollers; Control system for the rotation speed of the grinding roller.

[0006] Optionally, the frame is provided with a track connected end to end, and movable plates are provided at both ends of the grinding roller's axial direction, and the movable plates are installed in the track; the grinding roller is rotatably connected to the movable plate, and the rotating shaft of the grinding roller is synchronously rotatably connected to the first end face wheel; The driving assembly includes a driving motor, a driving wheel, and a driven wheel; the driving motor is fixedly connected to the movable plate; the driving wheel is synchronously rotatably mounted on the output shaft of the driving motor, the driven wheel can be movably mounted on the frame in the left and right directions, and is sleeved on the rotating shaft of the grinding roller, the rotating shaft of the grinding roller is synchronously rotatably connected to the first end face gear; the driven wheel is synchronously rotatably connected to the second end face gear on the side facing the first end face gear; the first end face gear is meshed with the second end face gear.

[0007] Optionally, a switching plate is slidably mounted on the rotating shaft of each grinding roller, and the driven wheel is rotatably mounted on the switching plate; The switching assembly includes a chain, a fixed plate and three sprockets; the fixed plate is fixedly connected to the frame, and the chain is connected end to end and fixedly connected to the outer periphery of the fixed plate; a sprocket is rotatably installed on the rotating shaft of each grinding roller; the sprocket is arranged on the side of the driven wheel away from the first end face gear, and the three sprockets are all engaged with the chain; the sprocket is synchronously rotatably connected to the third end face gear on the side facing the corresponding driven wheel; the driven wheel is synchronously rotatably connected to the fourth end face gear on the side facing the third end face gear, and the fourth end face gear extends out of the switching plate; the switching plate is connected to an adjusting assembly, and the adjusting assembly is used to adjust the distance between the switching plate and the sprocket under the command of the control system.

[0008] Optionally, the adjustment component includes a cylinder and an adjustment spring, the cylinder is arranged on the frame, and the other end of the cylinder is connected to the switching plate; the two ends of the adjustment spring respectively abut the moving plate and the driven wheel.

[0009] Optionally, a moving assembly is disposed at the second position of the frame, and the moving assembly is used to drive the grinding roller located at the second position to reciprocate axially.

[0010] Optionally, the moving assembly includes a moving mounting frame, a moving motor, a moving spring, a first connecting rod and a second connecting rod; the moving mounting frame can be movably mounted on the frame in the left-right direction, and the slide rail at the second position is arranged on the moving mounting frame; the moving spring extends in the left-right direction, and its two ends are respectively abutted against the frame and the moving mounting frame; the moving motor is installed on the frame, one end of the first connecting rod is synchronously rotatably connected to the output shaft of the moving motor, and the other end is hinged to the second connecting rod, and the end of the second connecting rod away from the first connecting rod is hinged to the moving mounting frame.

[0011] Optionally, baffles are provided on both sides of the grinding roller in the axial direction. The baffles are vertically arranged and extend in the front-rear direction. The baffles are detachably fixedly connected to the frame and clamped on the top of the grinding roller.

[0012] Optionally, the scraper is wavy in shape.

[0013] Optionally, the scraper is connected to a swing assembly, and the swing assembly is used to drive the scraper to move axially along the grinding roller.

[0014] Optionally, the swing assembly includes a swing bracket, a rotating plate, a swing motor, and a swing cam; the swing bracket is arranged at the front end of the frame; the rotating plate is rotatably installed on the swing bracket, and the rotating plate is horizontally connected to a guide rod; the scraper is fixedly connected to a moving block, and the moving block is slidably installed on the guide rod; the swing motor is fixedly connected to the rotating plate, and the output end of the swing motor is synchronously rotatably connected to the swing cam; a swing spring is sleeved on the guide rod, and the two ends of the swing spring are respectively abutted against the moving block and the swing bracket, and the swing spring makes the moving block abut against the swing cam.

[0015] The beneficial effects of the present invention are as follows: a flux grinder of the present invention changes the positions of three grinding rollers by setting a switching mechanism, so that the grinding roller originally located at the first position reaches the second position, the grinding roller originally located at the second position reaches the third position, and the grinding roller originally located at the third position reaches the first position; thereby solving the problems of poor grinding effect and inconsistent wear degrees of multiple rollers in the prior art and extending the service life of the grinder.

[0016] Furthermore, by setting up a moving component, the grinding roller located at the second position is driven to move back and forth left and right, so that when the two adjacent grinding rollers squeeze and grind the flux, left and right forces are applied to the flux, so that the flux is fully ground and the grinding efficiency of the flux is improved.

[0017] Furthermore, the scraper is arranged in a wave shape, so that when scraping, the flux is stored in multiple grooves of the scraper respectively, and the material in a concave position will not be pulled by the material in the adjacent groove, thereby solving the problem of slowing down the material flow speed and causing accumulation due to the traction of the flux caused by the high viscosity of the material. And the scraper is driven to move left and right by the swing component, so that when the scraper is deformed, the protruding position adjacent to the deformed position scrapes off the flux from both sides during the left and right swinging process, thereby solving the problem of poor scraping effect when the scraper is deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of a flux grinding machine of the present invention; Figure 2 It is a structural schematic diagram of a grinding assembly and a switching mechanism in a flux grinding machine of the present invention; Figure 3 It is a structural schematic diagram of a driving mechanism and a switching mechanism in a flux grinding machine of the present invention; Figure 4 for Figure 3 A cross-sectional view of the structure; Figure 5 for Figure 3 Enlarged image at the center X; Figure 6 for Figure 4 Enlarged view of Y in the middle; Figure 7 for Figure 4 Enlarged view of the middle Z; Figure 8 It is a structural schematic diagram of the scraper position in a flux grinding machine of the present invention; Fig. 9 for Figure 8 Section view of section AA.

[0020] In the figure: 100, frame; 110, driving assembly; 111, driving motor; 112, driving wheel; 113, driven wheel; 114, second end face gear; 115, fourth end face gear; 120, moving assembly; 121, moving mounting frame; 122, moving motor; 123, moving spring; 124, first connecting rod; 125, second connecting rod; 200, grinding assembly; 210, grinding roller; 211, moving plate; 212, first end face gear; 213, switching plate; 214, adjusting spring; 220, baffle; 300, scraper; 301, moving block; 310, swing assembly; 311, swing bracket; 312, rotating plate; 313, swing motor; 314, swing cam; 315, swing spring; 316, guide rod; 400, switching mechanism; 410, chain; 420, fixing plate; 430, sprocket; 431, third end gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] like Figures 1 to 9 As shown, a flux grinding machine provided by an embodiment of the present invention includes a frame 100, a grinding assembly 200, a scraper 300, a switching mechanism 400, a distance control assembly and a control system.

[0023] The rack 100 is sequentially provided with a first position, a second position and a third position from the back to the front; The grinding assembly 200 includes three grinding rollers 210, and the axes of the grinding rollers 210 extend in the left-right direction; the three grinding rollers 210 are respectively installed at a first position, a second position and a third position; the grinding rollers 210 are rotatably installed on the frame 100; each grinding roller 210 is connected to a driving assembly 110, and the driving assembly 110 is used to drive the grinding roller 210 to rotate around its own axis; The scraper 300 is tiltedly disposed at the front side of the frame 100, the rear side of the scraper 300 abuts against the grinding roller 210 at the third position, and the rear end of the scraper 300 is higher than the front end; The switching mechanism 400 is used to make the grinding roller 210 originally located at the first position reach the second position, make the grinding roller 210 originally located at the second position reach the third position, and make the grinding roller 210 originally located at the third position reach the first position; The distance adjustment component is used to adjust the distance between two adjacent grinding rollers 210; The control system is used for the rotation speed of the grinding roller 210 .

[0024] When grinding the flux, the raw materials are mixed evenly according to the proportion, and then the mixed flux is poured into the space between the two grinding rollers 210 away from the scraper 300. The driving assembly 110 drives the corresponding grinding roller 210 to rotate. During the rotation of the grinding roller 210, the two grinding rollers 210 located at the first position and the second position rotate in opposite directions and at different speeds. The flux is subjected to friction and shear force, and the diameter of the granular material becomes smaller. The ground flux passes through the gap between the two grinding rollers 210 and adheres to the surface of the grinding roller 210. As the grinding roller 210 continues to rotate, it reaches between the two grinding rollers 210 located at the second position and the third position. The two grinding rollers 210 located at the second position and the third position rotate in opposite directions and at different speeds, and the flux is ground for a second time and adheres to the surface of the grinding roller 210. As the grinding roller 210 rotates, the fully ground flux reaches the contact position between the scraper 300 and the grinding roller 210, and is scraped to the surface of the scraper 300 to complete the grinding. During the grinding process, the distance between the two grinding rollers 210 can be adjusted by a distance adjustment component, thereby adjusting the fineness of the flux.

[0025] After a period of grinding, the three grinding rollers 210 are worn to different degrees. The switching mechanism 400 changes the positions of the three grinding rollers 210, so that the grinding roller 210 originally located at the first position reaches the second position, the grinding roller 210 originally located at the second position reaches the third position, and the grinding roller 210 originally located at the third position reaches the first position; the control system controls the driving assembly 110 according to demand, and then adjusts the rotation speed of the corresponding grinding roller 210. The present invention solves the problems of poor grinding effect and inconsistent wear of multiple rollers in the prior art by setting a switching mechanism 400 to adjust the position of the grinding roller 210, thereby extending the service life of the grinder.

[0026] In a further embodiment, the frame 100 is provided with a track connected end to end, and a movable plate 211 is provided at both ends of the axial direction of the grinding roller 210, and the movable plate 211 is installed in the track; the grinding roller 210 is rotatably connected to the movable plate 211, and the rotating shaft of the grinding roller 210 is synchronously rotatably connected to the first end face wheel; The driving assembly 110 includes a driving motor 111, a driving wheel 112, and a driven wheel 113; the driving motor 111 is fixedly connected to the movable plate 211; the driving wheel 112 is synchronously rotatably mounted on the output shaft of the driving motor 111, and the driven wheel 113 can be movably mounted on the frame 100 along the left and right directions, and is sleeved on the rotating shaft of the grinding roller 210, and the rotating shaft of the grinding roller 210 is synchronously rotatably connected to the first end face gear 212; the driven wheel 113 is synchronously rotatably connected to the second end face gear 114 on the side facing the first end face gear 212; the first end face gear 212 is meshed with the second end face gear 114.

[0027] During grinding, the driving motor 111 drives the driving wheel 112 to rotate synchronously, and the driving wheel 112 drives the driven wheel 113 to rotate. When the driving wheel 112 rotates, the second end gear 114 drives the first end gear 212 to rotate synchronously, thereby driving the grinding roller 210 to rotate.

[0028] In a further embodiment, a switching plate 213 is slidably mounted on the rotating shaft of each grinding roller 210 , and the driven wheel 113 is rotatably mounted on the switching plate 213 ; The switching assembly includes a chain 410, a fixed plate 420 and three sprockets 430; the fixed plate 420 is fixedly connected to the frame 100, and the chain 410 is connected end to end and fixedly connected to the outer periphery of the fixed plate 420; a sprocket 430 is rotatably installed on the rotating shaft of each grinding roller 210; the sprocket 430 is arranged on the side of the driven wheel 113 away from the first end face gear 212, and the three sprockets 430 are all engaged with the chain 410; the sprocket 430 is synchronously rotatably connected to the third end face gear 431 on the side corresponding to the driven wheel 113; the driven wheel 113 is synchronously rotatably connected to the fourth end face gear 115 on the side of the third end face gear 431, and the fourth end face gear 115 extends out of the switching plate 213; the switching plate 213 is connected to an adjustment assembly, and the adjustment assembly is used to adjust the distance between the switching plate 213 and the sprocket 430 under the command of the control system.

[0029] When grinding is required, the corresponding switching plate 213 is driven by the adjusting component to move toward the first end face gear 212. When the switching plate 213 moves, the driven wheel 113 moves synchronously, and the distance between the first end face gear 212 and the second end face gear 114 is reduced until the two are meshed. At this time, the driving motor 111 drives the driving wheel 112 to rotate synchronously, and the driving wheel 112 drives the driven wheel 113 to rotate synchronously, and the second end face gear 114 rotates synchronously with the driven wheel 113, and then the grinding roller 210 is driven to rotate through the first end face gear 212 to grind the flux.

[0030] When the position of the grinding roller 210 needs to be changed, the switching plate 213 is driven to move toward the sprocket 430 through the adjustment component. When the switching plate 213 moves, the driven wheel 113 moves synchronously, and the first end face gear 212 and the second end face gear 114 are disengaged; the distance between the third end face gear 431 and the fourth end face gear 115 is reduced until they are engaged. At this time, the driving motor 111 drives the sprocket 430 to rotate through the driving wheel 112, the driven wheel 113, the fourth end face gear 115 and the third end face gear 431 in sequence. Since the sprocket 430 is engaged with the chain 410, during the rotation of the sprocket 430 In the embodiment, the sprocket 430 moves along the trajectory of the chain 410. When the grinding roller 210 originally located at the first position reaches the second position, the control system controls the corresponding adjusting component to disengage the third end face gear 431 and the fourth end face gear 115; when the grinding roller 210 originally located at the second position reaches the third position, the control system controls the corresponding adjusting component to disengage the third end face gear 431 and the fourth end face gear 115; when the grinding roller 210 originally located at the third position reaches the first position, the control system controls the corresponding adjusting component to disengage the third end face gear 431 and the fourth end face gear 115.

[0031] In a further embodiment, the adjustment assembly includes a cylinder and an adjustment spring 214. The cylinder is arranged on the frame 100, and the other end is connected to the switching plate 213; the two ends of the adjustment spring 214 abut against the moving plate 211 and the driven wheel 113 respectively. When grinding the solder flux, the cylinder is started, and the cylinder drives the switching plate 213 to move toward the moving plate 211 until the first end face gear 212 and the second end face gear 114 are meshed; during the movement of the switching plate 213, the adjustment spring 214 is compressed and stored. When the position of the grinding roller 210 needs to be changed, the cylinder is started, and the cylinder drives the switching plate 213 to move toward the sprocket 430. During this process, the adjustment spring 214 releases its elastic force until the fourth end face gear 115 and the third end face gear 431 are meshed.

[0032] In a further embodiment, a moving assembly 120 is disposed at the second position of the frame 100, and the moving assembly 120 is used to drive the grinding roller 210 located at the second position to reciprocate along the axial direction.

[0033] When grinding the solder paste, the three driving components 110 drive the three grinding rollers 210 to rotate respectively, and the moving component 120 drives the grinding roller 210 located at the second position to move back and forth along the axis. When the flux is located between two adjacent grinding rollers 210, it is not only squeezed by the two grinding rollers 210, but also subjected to shear forces in the left and right directions, so that the flux is fully ground and the grinding efficiency of the flux is improved.

[0034] In a further embodiment, the moving assembly 120 includes a moving mounting frame 121, a moving motor 122, a moving spring 123, a first connecting rod 124 and a second connecting rod 125; the moving mounting frame 121 can be movably installed on the frame 100 along the left and right directions, and the slide rail at the second position is arranged on the moving mounting frame 121; the moving spring 123 extends along the left and right directions, and its two ends are respectively abutted against the frame 100 and the moving mounting frame 121; the moving motor 122 is installed on the frame 100, one end of the first connecting rod 124 is synchronously rotatably connected to the output shaft of the moving motor 122, and the other end is hinged to the second connecting rod 125, and the end of the second connecting rod 125 away from the first connecting rod 124 is hinged to the moving mounting frame 121.

[0035] During the grinding process, the three driving components 110 respectively drive the three grinding rollers 210 to rotate. After the mobile motor 122 is started, it drives the first connecting rod 124 to rotate. During the rotation of the first connecting rod 124, the second connecting rod 125 drives the mobile mounting frame 121 to move left and right, and then drives the grinding roller 210 located at the second position to move left and right. During the movement of the mobile mounting frame 121, the mobile spring 123 is compressed and released back and forth.

[0036] In a further embodiment, baffles 220 are provided on both sides of the grinding roller 210 in the axial direction, the baffles 220 are vertically arranged and extend in the front-rear direction; the baffles 220 are detachably fixedly connected to the frame 100 and clamped on the top of the grinding roller 210. This prevents the flux from leaking from both sides of the grinding roller 210 during the grinding process.

[0037] In a further embodiment, the scraper 300 is wavy. During the grinding process, the grinding roller 210 closest to the scraper 300 abuts against the scraper 300. As the grinding roller 210 rotates, the flux on the grinding roller 210 is scraped to the upper surface of the scraper 300. The material has a high viscosity, and the material that first reaches the scraper 300 is pushed by the material that arrives at the scraper 300 later and flows. Since the scraper 300 is wavy, the material that reaches the scraper 300 is separated and stored in the recessed positions of the scraper 300 respectively. The material in a recessed position will not be pulled by the material in the adjacent groove, thereby solving the problem of the material being pulled by the adjacent material, causing the flow speed to slow down and the accumulation at the end where the scraper 300 abuts against the roller.

[0038] In a further embodiment, the scraper 300 is connected to a swinging assembly 310, which is used to drive the scraper 300 to move axially along the grinding roller 210. When the scraper 300 is deformed, a gap appears between the scraper 300 and the roller. As the roller rotates, the undeformed portion of the scraper 300 can smoothly scrape the flux from the roller, while the scraper 300 at the deformed position has a poor scraping effect or even cannot scrape the flux on the roller. However, since the scraper 300 is wavy in shape, although the grooves at the deformed position cannot scrape, in the process of the scraper 300 being driven left and right by the swinging assembly 310, the protruding positions adjacent to it can scrape the flux from both sides, thereby solving the problem of poor scraping effect when the scraper 300 is deformed.

[0039] In a further embodiment, the swing assembly 310 includes a swing bracket 311, a rotating plate 312, a swing motor 313, and a swing cam 314; the swing bracket 311 is arranged at the front end of the frame 100; the rotating plate 312 is rotatably mounted on the swing bracket 311, and the rotating plate 312 is horizontally connected to the guide rod 316; the scraper 300 is fixedly connected to the moving block 301, and the moving block 301 is slidably mounted on the guide rod 316; the swing motor 313 is fixedly connected to the rotating plate 312, and the output end of the swing motor 313 is synchronously rotatably connected to the swing cam 314; a swing spring 315 is sleeved on the guide rod 316, and the two ends of the swing spring 315 are respectively abutted against the moving block 301 and the swing bracket 311, and the swing spring 315 makes the moving block 301 abut against the swing cam 314.

[0040] The swing motor 313 drives the swing cam 314 to rotate. In the process of the swing cam 314 and the moving block 301 contacting from the near point to the far point, the moving block 301 is pushed away from the axis of the swing cam 314. At the same time, the swing spring 315 accumulates force. In the process of the swing cam 314 and the moving block 301 contacting from the far point to the near point, the swing spring 315 releases the elastic force, pushing the moving block 301 to approach the axis of the swing cam 314, and repeating the cycle.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flux grinding machine, characterized in that: include: A frame, on which a first position, a second position and a third position are arranged in sequence from back to front; The grinding assembly comprises three grinding rollers, the axes of the grinding rollers extending in the left-right direction; the three grinding rollers are respectively installed at a first position, a second position and a third position; the grinding rollers are rotatably installed on the frame; each grinding roller is connected to a driving assembly, and the driving assembly is used to drive the grinding roller to rotate around its own axis; A scraper is obliquely arranged on the front side of the frame, the rear side of the scraper abuts against the grinding roller at the third position, and the rear end of the scraper is higher than the front end; A switching mechanism is used to make the grinding roller originally located at the first position reach the second position, make the grinding roller originally located at the second position reach the third position, and make the grinding roller originally located at the third position reach the first position; A distance adjustment component, used for adjusting the distance between two adjacent grinding rollers; Control system for the rotation speed of the grinding roller.

2. A flux grinding machine according to claim 1, characterized in that: The frame is provided with a track connected end to end, and both ends of the grinding roller are provided with a moving plate, which is installed in the track; The grinding roller is rotatably connected to the moving plate, and the rotating shaft of the grinding roller is synchronously rotatably connected to the first end face wheel; The driving assembly includes a driving motor, a driving wheel, and a driven wheel; the driving motor is fixedly connected to the movable plate; the driving wheel is synchronously rotatably mounted on the output shaft of the driving motor, the driven wheel can be movably mounted on the frame in the left and right directions, and is sleeved on the rotating shaft of the grinding roller, the rotating shaft of the grinding roller is synchronously rotatably connected to the first end face gear; the driven wheel is synchronously rotatably connected to the second end face gear on the side facing the first end face gear; the first end face gear is meshed with the second end face gear.

3. A flux grinding machine according to claim 2, characterized in that: A switching plate is slidably mounted on the rotating shaft of each grinding roller, and a driven wheel is rotatably mounted on the switching plate; The switching assembly includes a chain, a fixed plate and three sprockets; the fixed plate is fixedly connected to the frame, and the chain is connected end to end and fixedly connected to the outer periphery of the fixed plate; a sprocket is rotatably installed on the rotating shaft of each grinding roller; the sprocket is arranged on the side of the driven wheel away from the first end face gear, and the three sprockets are all engaged with the chain; the sprocket is synchronously rotatably connected to the third end face gear on the side facing the corresponding driven wheel; the driven wheel is synchronously rotatably connected to the fourth end face gear on the side facing the third end face gear, and the fourth end face gear extends out of the switching plate; the switching plate is connected to an adjusting assembly, and the adjusting assembly is used to adjust the distance between the switching plate and the sprocket under the command of the control system.

4. A flux grinding machine according to claim 3, characterized in that: The adjusting component comprises a cylinder and an adjusting spring. The cylinder is arranged on the frame, and the other end of the cylinder is connected to the switching plate. The two ends of the adjusting spring respectively abut against the moving plate and the driven wheel.

5. A flux grinding machine according to claim 4, characterized in that: A moving assembly is arranged at the second position of the frame, and the moving assembly is used for driving the grinding roller at the second position to move back and forth along the axial direction.

6. A flux grinding machine according to claim 5, characterized in that: The moving assembly includes a moving mounting frame, a moving motor, a moving spring, a first connecting rod and a second connecting rod; the moving mounting frame can be movably mounted on the frame in the left-right direction, and the slide rail at the second position is arranged on the moving mounting frame; the moving spring extends in the left-right direction, and its two ends are respectively abutted against the frame and the moving mounting frame; the moving motor is installed on the frame, one end of the first connecting rod is synchronously rotatably connected to the output shaft of the moving motor, and the other end is hinged to the second connecting rod, and the end of the second connecting rod away from the first connecting rod is hinged to the moving mounting frame.

7. A flux grinding machine according to claim 6, characterized in that: Baffles are arranged on both sides of the grinding roller in the axial direction. The baffles are arranged vertically and extend in the front-back direction. The baffles are detachably fixedly connected to the frame and clamped on the top of the grinding roller.

8. A flux grinding machine according to any one of claims 1 to 7, characterized in that: The scraper is wavy.

9. A flux grinding machine according to claim 8, characterized in that: The scraper is connected with a swing assembly, and the swing assembly is used to drive the scraper to move along the axial direction of the grinding roller.

10. A flux grinding machine according to claim 9, characterized in that: The swing assembly includes a swing bracket, a rotating plate, a swing motor, and a swing cam; the swing bracket is arranged at the front end of the frame; the rotating plate is rotatably installed on the swing bracket, and the rotating plate is horizontally connected to the guide rod; the scraper is fixedly connected to the moving block, and the moving block is slidably installed on the guide rod; the swing motor is fixedly connected to the rotating plate, and the output end of the swing motor is synchronously and rotatably connected to the swing cam; a swing spring is sleeved on the guide rod, and the two ends of the swing spring are respectively abutted against the moving block and the swing bracket, and the swing spring makes the moving block abut against the swing cam.

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