CN112934789A

CN112934789A - PLC circuit board surface ash removal device

Info

Publication number: CN112934789A
Application number: CN202110269358.4A
Authority: CN
Inventors: 程继辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-06-11

Abstract

The invention belongs to the technical field of PLC circuit board cleaning, and discloses a PLC circuit board surface dust removal device which comprises a supporting assembly, wherein a rotating assembly is rotatably connected above the supporting assembly, a dust removal assembly is arranged above the rotating assembly, the supporting assembly comprises a U-shaped supporting frame, a through shaft hole is formed in each of opposite inner walls of the U-shaped supporting frame, a motor base is fixedly installed on the outer surface of the U-shaped supporting frame, a first driving motor is fixedly installed above the motor base, the rotating assembly comprises a rotating plate, a first connecting disc is fixedly installed on each of two side surfaces of the rotating plate, a rotating shaft is fixedly installed on one end surface, far away from the rotating plate, of the first connecting disc, the rotating shaft penetrates through the shaft holes, and a second connecting disc is fixedly installed on one end surface, far away from the first connecting disc, of the rotating shaft. The invention can rapidly and conveniently finish the ash removal of the surface of the PLC circuit board, has better ash removal effect and is easy to be put on the market.

Description

PLC circuit board surface ash removal device

Technical Field

The invention belongs to the technical field of PLC circuit board cleaning, and particularly relates to a PLC circuit board surface dust cleaning device.

Background

The PLC circuit board is an important component forming the whole control system, and before control operation, dust accumulated on the surface of the PLC circuit board needs to be removed by means of a corresponding dust cleaning device.

At present, the PLC circuit board surface is cleaned by a brush manually, on one hand, the manual dust cleaning mode is low in dust cleaning efficiency, and on the other hand, due to the fact that a general dust cleaning device moves parallel to the PLC circuit board, dust at welding feet of welding electrical components on the PLC circuit board cannot be cleaned in a targeted and effective mode, and the problem that short circuit is easily caused by the dust accumulated at the welding feet is caused; therefore, the invention designs the dust removing device for the surface of the PLC circuit board, so as to solve the problems.

Disclosure of Invention

The invention aims to solve the problems, and provides a PLC circuit board surface dust cleaning device which has the advantage of high PLC circuit board cleaning efficiency.

In order to achieve the purpose, the invention provides the following technical scheme: a PLC circuit board surface dust cleaning device comprises a supporting component, wherein a rotating component is rotatably connected above the supporting component, and a dust cleaning component is arranged above the rotating component; the supporting assembly comprises a U-shaped supporting frame, a through shaft hole is formed in each of opposite inner walls of the U-shaped supporting frame, a motor base is fixedly installed on the outer surface of the U-shaped supporting frame, and a first driving motor is fixedly installed above the motor base; the rotating assembly comprises a rotating plate, a first connecting disc is fixedly mounted on two side faces of the rotating plate, a rotating shaft is fixedly mounted on one end face, away from the rotating plate, of the first connecting disc, the rotating shaft penetrates through a shaft hole, a second connecting disc is fixedly mounted on one end face, away from the first connecting disc, of the rotating shaft, the second connecting disc is fixedly connected with the output end of a first driving motor, a strip-shaped groove is formed in the rotating plate, a reverse thread lead screw is rotatably connected in the strip-shaped groove, a first toothed ring is fixedly sleeved at one end of the reverse thread lead screw, a second driving motor is fixedly mounted on the upper surface of the rotating plate, a first gear is fixedly mounted at the output end of the second driving motor, the first gear is meshed with the first toothed ring, and two symmetrically-arranged sliding blocks are slidably connected to the reverse thread lead screw, a U-shaped plate is fixedly mounted above each sliding block, a limiting bolt is in threaded connection with the middle of the upper surface of each U-shaped plate, the bottom end of each limiting bolt is rotatably connected with a clamping plate through a bearing, two ends of the upper surface of each clamping plate are fixedly provided with a guide column, the top end of each guide column penetrates through the inner top surface of each U-shaped plate and extends to the outer side of each U-shaped plate, a PLC circuit board is clamped between the inner bottom surface of each U-shaped plate and the lower surface of each clamping plate, and a first pressure sensor is arranged in a U-shaped groove of each U-shaped plate; the ash cleaning component comprises two supports, wherein the two supports are fixedly arranged on the upper surface of the rear side of the rotating plate, an unidirectional thread lead screw is rotatably connected between the two supports, one end of the unidirectional thread lead screw is fixedly provided with a second toothed ring, the ash cleaning component also comprises a third driving motor, the third driving motor is fixedly arranged on the rotating plate, the output end of the third driving motor is fixedly provided with a second gear, the second gear is meshed with the second toothed ring and is connected with the unidirectional thread lead screw in a meshing manner, a square moving block is slidably connected onto the unidirectional thread lead screw, a rectangular groove is arranged inside the square moving block, a stand column is fixedly arranged inside the rectangular groove, a lifting block is slidably connected onto the outer side of the stand column, and a first buffer spring is sleeved between the upper surface of the lifting block and the inner top surface of the rectangular groove on the peripheral side of the stand column, a second pressure sensor is arranged between the upper end part of the first buffer spring and the upper inner wall of the rectangular groove; a transverse plate is arranged below the lifting block, a plurality of groups of cleaning mechanisms are arranged below the transverse plate, each cleaning mechanism comprises a supporting rod, and the supporting rods penetrate through the lower surface of the transverse plate and extend into a cavity in the transverse plate; the upper end part of the supporting rod positioned in the cavity in the transverse plate is connected with the second buffer spring of the cavity of the transverse plate; soft bristles are arranged at the lower end parts of the supporting rods extending out of the transverse plates.

Preferably, a shock pad is fixedly installed between the motor base and the first driving motor, and the shock pad is a rubber component.

Preferably, the bottom end of the limiting bolt is fixedly connected with an inner ring of the bearing, and the upper surface of the clamping plate is fixedly connected with an outer ring of the bearing.

Preferably, the upper surface of "U" shaped plate is seted up two guide ways with guide post assorted, the guide post passes the guide way, the diameter of guide post is the same with the internal diameter of guide way, and the week side of guide post and the inner wall of guide way are all smooth.

Preferably, a gasket is fixedly mounted on the inner bottom surface of the U-shaped plate and the lower surface of the clamping plate, and the gasket is made of rubber.

Preferably, the lower surface of the square moving block is in contact with the upper surface of the rotating plate, and the lower surface of the square moving block and the upper surface of the rotating plate are both smooth.

Preferably, the support rod comprises an upper rigid support rod, and the rigid support rod is made of a rigid material and is connected with the second buffer spring; the flexible support rod is arranged below the rigid support rod of the support rod and is made of flexible materials and connected with the flexible hairbrush.

Preferably, the stiffness coefficient of the second buffer spring is smaller than the stiffness coefficient of the first buffer spring.

Preferably, the bottom ends of the soft bristles are in contact with the upper surface of the PLC circuit board when the first buffer spring and the second buffer spring are in a natural telescopic state.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the control switch of the second driving motor is started, the second driving motor drives the first gear to rotate, and the first gear is meshed with the first toothed ring, so that the reverse threaded screw rod can be rotated by the rotation of the first gear, and the two U-shaped plates are close to or far away from each other, so that the distance between the two U-shaped plates is adjusted, PLC circuit boards with different sizes can be clamped conveniently, the applicability of the dust cleaning device for the surface of the PLC circuit board is greatly improved, and the dust cleaning device has a wider application range.

2. According to the invention, the first driving motor, the second connecting disc, the rotating shaft, the first connecting disc and the rotating plate are arranged, so that the PLC circuit board can be inclined by rotating the rotating plate for a certain angle in the ash removing process of the PLC circuit board, and the accumulated ash cleaned from the PLC circuit board by the cleaning mechanism can be dumped and discharged; on the other hand, the rotating plate is fixed after rotating for a certain angle, so that the PLC circuit board fixed above the rotating plate has a certain inclination angle, welding pins of the electrical components vertically welded above the PLC circuit board can be exposed, dust at the welding pins of the electrical components welded above the PLC circuit board can be conveniently cleaned, and the problem that the electrical components are easily short-circuited due to the fact that the dust at the welding pins is not cleaned in place is solved; and the controller controls the first driving motor to rotate forwards and backwards periodically, so that the rotating plate and the PLC circuit board above the rotating plate rotate forwards and backwards periodically, the cleaning mechanism reciprocates in combination with the PLC circuit board to rotate forwards and backwards periodically, so that the PLC circuit board, electrical elements above the PLC circuit board and the soft hairbrush on the cleaning mechanism can be relatively extruded, and the cleaning effect of the cleaning mechanism on dust on the PLC circuit board can be greatly improved.

3. According to the invention, by arranging the support rod, the second buffer spring, the soft bristles and other components, when higher electrical elements are welded on the PLC circuit board, or the cleaning mechanism reciprocates in combination with the periodic forward rotation and reverse rotation of the PLC circuit board, so that the welding elements on the PLC circuit board are exposed out of the welding pins for cleaning so as to clean dust deposited on the welding pins, and meanwhile, in the process of enhancing the dust deposition cleaning effect of the cleaning mechanism on the PLC circuit board, the higher electrical elements or the PLC circuit board with a certain fixed angle generate reverse acting force on the soft bristles and the flexible support rod, then the second buffer spring is compressed through the rigid support rod, and the second buffer spring performs primary buffer action on the higher electrical elements or the PLC circuit board, so that the protection effect is improved; when electrical components's highly higher or PLC circuit board inclination is great, soft brush hair and flexible support rod make rigid support spare continue upward movement after compressing second buffer spring to extreme position through the rigid support rod, make first buffer spring compressed, first buffer spring plays second grade buffering guard action this moment, when first buffer spring continues to be compressed, first spring extrusion second pressure sensor, through setting for safe value in the controller, when the pressure value that second pressure sensor surveyed and transmitted to in the controller is greater than safe value, the controller stops the work of third driving motor, and then stop clearance mechanism motion, prevent to cause the damage to the higher electrical components of height of PLC circuit board and top.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic structural view of the support assembly of the present invention;

FIG. 4 is a schematic view of the rotating assembly of the present invention;

FIG. 5 is a cross-sectional view of the rotating assembly of the present invention;

FIG. 6 is an enlarged view of portion A of FIG. 5 in accordance with the present invention;

FIG. 7 is a schematic view of the ash removal assembly of the present invention;

FIG. 8 is an enlarged view of portion B of FIG. 7 in accordance with the present invention;

FIG. 9 is a schematic view of the cleaning mechanism of the present invention.

In the figure: 1. a support assembly; 101. a U-shaped support frame; 102. a shaft hole; 103. a motor base; 104. a first drive motor; 2. a rotating assembly; 201. a rotating plate; 202. a first connecting disc; 203. a rotating shaft; 204. a second connecting disk; 205. a strip-shaped groove; 206. a reverse thread screw rod; 207. a first ring gear; 208. a second drive motor; 209. a first gear; 210. a "U" shaped plate; 211. a slider; 212. a clamping plate; 213. a limit bolt; 214. a guide post; 215. a PLC circuit board; 216. a U-shaped groove; 3. a soot cleaning assembly; 301. a support; 302. a one-way threaded lead screw; 303. a second ring gear; 304. a third drive motor; 305. a second gear; 306. a square moving block; 307. a rectangular groove; 308. a column; 309. a lifting block; 310. a first buffer spring; 311. a transverse plate; 4. a cleaning mechanism; 401. a support bar; 402. a second buffer spring; 403. soft bristles; 404. a rigid support rod; 405. a flexible support rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

As shown in fig. 1-8, the invention provides a PLC circuit board surface ash removal device, which comprises a support assembly 1, wherein a rotating assembly 2 is rotatably connected above the support assembly 1, and an ash removal assembly 3 is arranged above the rotating assembly 2; the supporting component 1 comprises a U-shaped supporting frame 101, wherein a through shaft hole 102 is formed in each of opposite inner walls of the U-shaped supporting frame 101, a motor base 103 is fixedly installed on the outer surface of the U-shaped supporting frame 101, and a first driving motor 104 is fixedly installed above the motor base 103; the rotating assembly 2 comprises a rotating plate 201, a first connecting disc 202 is fixedly mounted on each of two side surfaces of the rotating plate 201, a rotating shaft 203 is fixedly mounted on one end surface of the first connecting disc 202 far away from the rotating plate 201, the rotating shaft 203 penetrates through the shaft hole 102, a second connecting disc 204 is fixedly mounted on one end surface of the rotating shaft 203 far away from the first connecting disc 202, the second connecting disc 204 is fixedly connected with the output end of the first driving motor 104, the first driving motor 104 drives the rotating plate 201 to rotate through the second connecting disc 204, the rotating shaft 203 and the first connecting disc 202, in the process of cleaning the PLC circuit board 215, on one hand, after the cleaning mechanism 4 finishes cleaning the PLC circuit board 215, by rotating the rotating plate 201 by a certain angle, the PLC circuit board 215 can be tilted, the accumulated dust cleaned by the cleaning mechanism 4 from the PLC circuit board 215 is dumped and discharged; on the other hand, in the process that the cleaning mechanism 4 continuously cleans the PLC circuit board 215 in a reciprocating motion, the rotating plate 201 is fixed after rotating for a certain angle, so that the PLC circuit board 215 fixed above the rotating plate 201 has a certain inclination angle, and thus, the welding pins of the electrical components vertically welded above the PLC circuit board 215 can be exposed, the welding pins of the electrical components can be contacted with the soft brush 403 on the cleaning mechanism 4, the dust deposition at the welding pins of the electrical components welded above the PLC circuit board 215 can be conveniently cleaned, and the problem that the electrical components are easily short-circuited due to the fact that the dust deposition at the welding pins is not cleaned in place is solved; thirdly, the controller controls the first driving motor 104 to rotate forwards and backwards periodically, the second connecting disc 204, the rotating shaft 203 and the first connecting disc 202 further drive the rotating plate 201 and the PLC circuit board 215 above the rotating plate to rotate forwards and backwards periodically, the cleaning mechanism 4 reciprocates and combines with the PLC circuit board 215 to rotate forwards and backwards periodically, the PLC circuit board 215 and electrical components above the PLC circuit board 215 and the soft brush 403 on the cleaning mechanism 4 can be squeezed relatively, and the cleaning effect of the cleaning mechanism 4 on dust on the PLC circuit board 215 can be improved greatly.

A strip-shaped groove 205 is formed in the rotating plate 201, a reverse thread screw rod 206 is rotatably connected in the strip-shaped groove 205, a first toothed ring 207 is fixedly sleeved at one end of the reverse thread screw rod 206, a second driving motor 208 is fixedly installed on the upper surface of the rotating plate 201, a first gear 209 is fixedly installed at the output end of the second driving motor 208, the first gear 209 is meshed with the first toothed ring 207, two symmetrically-arranged sliding blocks 211 are slidably connected on the reverse thread screw rod 206, a U-shaped plate 210 is fixedly installed above each sliding block 211, a limit bolt 213 is in threaded connection with the middle of the upper surface of each U-shaped plate 210, a clamping plate 212 is rotatably connected at the bottom end of each limit bolt 213 through a bearing, and a flexible cushion is arranged at the bottom of each clamping plate 212, when fixing the PLC circuit board, can effectively cushion the PLC circuit board, prevent to press from both sides and hinder the PLC circuit board. A guide post 214 is fixedly mounted at each of two ends of the upper surface of the clamping plate 212, the top end of the guide post 214 penetrates through the inner top surface of the U-shaped plate 210 and extends to the outer side of the U-shaped plate 210, and a PLC circuit board 215 is clamped between the inner bottom surface of the U-shaped plate 210 and the lower surface of the clamping plate 212; be equipped with first pressure sensor in "U" shape recess 216 of "U" shaped plate 210, when two grip blocks 212 accomplish to carry out the centre gripping to PLC circuit board both ends, first pressure sensor is located between the tip of PLC circuit board and "U" shape recess 216 inner wall, and first pressure sensor's this moment effect has: firstly, the first pressure sensor can measure the clamping force of the U-shaped plates 210 at two ends to two ends of the PLC circuit board, and the controller stops the second driving motor 208 to drive the reverse thread screw rod 206 to rotate when the clamping force of the U-shaped plates 210 to the PLC circuit board measured by the first pressure sensor is larger than the upper limit value due to the arrangement of the upper limit value in the controller, so that the PLC circuit board is prevented from being damaged due to the fact that the clamping force of the U-shaped plates 210 to the PLC circuit board is too large; secondly, because the electrical components with different heights are welded on the PLC circuit board, when the cleaning mechanism 4 of the device is used for cleaning the PLC circuit board in a left-right horizontal reciprocating motion manner, when the height of the welded electrical component is higher, the electrical component can block the cleaning mechanism 4, the cleaning mechanism can generate a leftward or rightward thrust to the higher electrical component, and if the thrust is higher, the electrical component is easy to be detached or damaged; through setting up the default in the controller, reciprocating motion when clearing up mechanism 4 is cleared up the PLC circuit board about, first pressure sensor detects because clearing up mechanism 4 is greater than when the default to electrical components's thrust, in order to protect this electrical components, controller control second driving motor 208 drives reverse screw lead screw 206 antiport, drive the direction motion of "U" shaped plate 210 to keeping away from each other of both sides through reverse screw lead screw 206, and then no longer centre gripping PLC circuit board, make PLC circuit board ability free motion, prevent that clearing up mechanism 4 from causing the higher electrical components of welded height to weld or damage on the PLC circuit board.

The ash cleaning component 3 comprises two supports 301, the two supports 301 are both fixedly arranged on the upper surface of the rear side of the rotating plate 201, a one-way threaded screw rod 302 is rotatably connected between the two supports 301, one end of the one-way threaded screw rod 302 is fixedly provided with a second toothed ring 303, the ash cleaning component 3 further comprises a third driving motor 304, the third driving motor 304 is fixedly arranged on the rotating plate 201, the output end of the third driving motor 304 is fixedly provided with a second gear 305, the second gear 305 is meshed and connected with the second toothed ring 303, the one-way threaded screw rod 302 is slidably connected with a square moving block 306, the inside of the square moving block 306 is provided with a rectangular groove 307, the inside of the rectangular groove 307 is fixedly provided with a vertical column 308, the outer side of the vertical column 308 is slidably connected with a lifting block 309, a first buffer spring 310 is sleeved between the upper surface of the lifting block 309 and the inner top surface of the rectangular groove 307 on the side of, a second pressure sensor is arranged between the upper end part of the first buffer spring 310 and the upper inner wall of the rectangular groove 307; the first buffer spring 310 cooperates with the second pressure sensor, and is used for protecting the welding electric element with higher height above the PLC circuit board 215 when ash removal is performed on the PLC circuit board; in the process that the cleaning mechanism 4 cleans the PLC circuit board 215, since the electrical component with a higher height above the cleaning mechanism applies upward extrusion force to the horizontal plate 311 through the soft bristles 403 and the support rod 401 on the cleaning mechanism 4, so that the horizontal plate 311 moves upward and compresses the first buffer spring 310, the first spring 310 extrudes the second pressure sensor, and by setting a safety value in the controller, when the pressure value measured and transmitted into the controller by the second pressure sensor is greater than the safety value, the controller stops the third driving motor 304 to work, so as to stop the movement of the cleaning mechanism 4, thereby preventing the electrical component with a higher height on the PLC circuit board 215 from being damaged; then, the clamping height of the PLC circuit board 215 is adjusted through the U-shaped plate 210 and the sliding block 211, and the ash cleaning work is continued.

A transverse plate 311 is arranged below the lifting block 309, a plurality of groups of cleaning mechanisms 4 are arranged below the transverse plate 311, a third driving motor 304 on the ash removal component 3 drives a square moving block 306 to reciprocate through a one-way threaded lead screw 302, and the square moving block 306 drives the cleaning mechanisms 4 to reciprocate on the PLC circuit board so as to clean ash deposition on the upper surface of the PLC circuit board.

Wherein, fixed mounting has a shock pad between motor cabinet 103 and the first driving motor 104, and the shock pad is the component of rubber material, through installing the shock pad between motor cabinet 103 and first driving motor 104, can reduce the vibrations of first driving motor 104 to the life-span of extension first driving motor 104.

The bottom end of the limit bolt 213 is fixedly connected with the inner ring of the bearing, the upper surface of the clamping plate 212 is fixedly connected with the outer ring of the bearing, and the bearing is arranged between the clamping plate 212 and the limit bolt 213, so that the clamping plate 212 can be driven to ascend and descend when the limit bolt 213 ascends and descends.

Wherein, the upper surface of "U" shaped plate 210 is seted up two guide ways with guide post 214 assorted, and guide post 214 passes the guide way, and the diameter of guide post 214 is the same with the internal diameter of guide way, and the all smooth inner walls of the week side face of guide post 214 and guide way.

Wherein, equal fixed mounting has a gasket on the interior bottom surface of "U" shaped plate 210 and on the lower surface of grip block 212, and the gasket is the component of rubber material, through all fixed mounting has a gasket on the interior bottom surface of "U" shaped plate 210 and on the lower surface of grip block 212, can avoid PLC circuit board 215 to be crushed.

The lower surface of the square moving block 306 is in contact with the upper surface of the rotating plate 201, the lower surface of the square moving block 306 is smooth with the upper surface of the rotating plate 201, and the lower surface of the square moving block 306 is in contact with the upper surface of the rotating plate 201, so that the square moving block 306 can be prevented from rotating.

When the dust of the PLC circuit board 215 needs to be cleaned, firstly, a worker starts a control switch of the second driving motor 208, the second driving motor 208 drives the first gear 209 to rotate, and the first gear 209 is meshed with the first toothed ring 207, so that the reverse threaded screw rod 206 can be rotated by the rotation of the first gear 209, the two U-shaped plates 210 can be close to or far away from each other, the distance between the two U-shaped plates 210 can be adjusted, then the PLC circuit board 215 is clamped between the two U-shaped plates 210, and then the limit bolt 213 is screwed to clamp the PLC circuit board 215. Then a control switch of a third driving motor 304 is started, the third driving motor 304 drives a second gear 305 to rotate, and the second gear 305 is meshed with a second gear ring 303, so that the one-way threaded screw rod 302 rotates, the square moving block 306 can move left and right, and the ash on the surface of the PLC circuit board 215 is cleaned; in the ash cleaning process, the controller controls the first driving motor 104 to rotate forwards and backwards periodically, and then the second connecting disc 204, the rotating shaft 203 and the first connecting disc 202 drive the rotating plate 201 to rotate the PLC circuit board 215 above the rotating plate to rotate forwards and backwards periodically, so that the cleaning mechanism 4 reciprocates and combines with the PLC circuit board 215 to rotate forwards and backwards periodically, the cleaning effect of the cleaning mechanism 4 on the dust accumulated on the PLC circuit board 215 is improved, and the dust accumulated on welding pins for welding electrical components on the PLC circuit board 215 is cleaned deeply; after the ash removal is completed, the control switch of the first driving motor 104 is started, and the first driving motor 104 drives the rotating assembly 2 to integrally rotate, so that the dust falls.

Example two

In the process that the controller controls the first driving motor 104 to rotate forwards and backwards periodically, and further drives the rotating plate 201 and the PLC circuit board 215 above the rotating plate to rotate forwards and backwards periodically through the second connecting disc 204, the rotating shaft 203 and the first connecting disc 202, so that the cleaning mechanism 4 reciprocates and is combined with the periodic forward and backward movement of the PLC circuit board 215, and further welded components on the PLC circuit board 215 are exposed to the welded pins to clean dust deposited on the welded pins, and meanwhile, the cleaning effect of the cleaning mechanism 4 on the dust deposited on the PLC circuit board 215 is enhanced, when the height of electrical components on the PLC circuit board 215 is higher, the electrical components, soft bristles 403 on the cleaning mechanism 4 and a supporting rod 401 generate a relatively-extrusion acting force, and when the acting force is higher, the bending deformation of the welded pins or the loosening or desoldering of the electrical components are easily caused, and finally the PLC circuit board 215 is damaged; therefore, the present invention is further improved to avoid the above problems.

As shown in fig. 9, the cleaning mechanism 4 includes a support rod 401, the support rod 401 passes through the lower surface of the cross plate 311 and extends into the cavity inside the cross plate 311; the upper end of the supporting rod 401 in the cavity of the transverse plate 311 is connected with the second buffer spring 402 in the cavity of the transverse plate 311; soft bristles 403 are arranged at the lower end of the support rod 401 extending out of the transverse plate 311. The support rod 401 includes an upper rigid support rod 404, and the rigid support rod 404 is made of a rigid material and is connected with the second buffer spring 402; a flexible support rod 405 is arranged below the rigid support rod 404 of the support rod 401, and the flexible support rod 405 is made of flexible materials and is connected with the flexible hairbrush 403. The first buffer spring 310 and the second buffer spring 402 are in a natural stretching state, and the bottom ends of the soft bristles 403 are in contact with the upper surface of the PLC circuit board 215, so that the dust on the surface of the PLC circuit board can be effectively cleaned when the first buffer spring 310 and the second buffer spring 402 are in the natural stretching state. By selecting and controlling the stiffness coefficients of the first buffer spring 310 and the second buffer spring 402, the stiffness coefficient of the second buffer spring 402 is smaller than the stiffness coefficient of the first buffer spring 310, when a higher electrical component is welded on the PLC circuit board 215, or when the cleaning mechanism 4 reciprocates in combination with the periodic forward rotation and reverse rotation of the PLC circuit board 215, the welding component on the PLC circuit board 215 is exposed to clean the welding pins so as to clean the deposited dust on the welding pins, and in the process of enhancing the effect of the cleaning mechanism 4 on cleaning the deposited dust on the PLC circuit board 215, the higher electrical component or the PLC circuit board 215 with a certain fixed angle generates a reverse acting force on the soft bristles 403 and the flexible support rod 405, and then the second buffer spring 402 is compressed by the rigid support rod 404, and the soft bristles 403 and the flexible support rod 405 move upwards relative to the higher electrical component or the PLC circuit board, the second buffer spring 402 performs a primary buffer action on a higher electrical appliance element or a PLC circuit board, so that the protection effect is improved; when the height of the electrical component is high or the inclination angle of the PLC circuit board 215 is large, the soft bristles 403 and the flexible support rod 405 compress the second buffer spring 402 to the limit position through the rigid support rod 404 and then the rigid support 404 continues to move upward, because the stiffness coefficient of the second buffer spring 402 is smaller than the stiffness coefficient of the first buffer spring 310, at this time, the cross plate 311 is pushed by the rigid support rod 404 to continue to move upward and simultaneously press the first buffer spring 310, so that the first buffer spring 310 is compressed, at this time, the first buffer spring 310 plays a secondary buffer protection role, when the first buffer spring 310 continues to be compressed, the first spring 310 presses the second pressure sensor, through setting a safety value in the controller, when the pressure value measured and transmitted to the controller by the second pressure sensor is larger than the safety value, the controller stops the third driving motor 304 to operate and further stop the cleaning mechanism 4 to move, damage to PLC circuit board 215 and the taller electrical components above it is prevented.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a PLC circuit board surface ash removal device, includes supporting component (1), its characterized in that: a rotating assembly (2) is rotatably connected above the supporting assembly (1), and a dust cleaning assembly (3) is arranged above the rotating assembly (2); the supporting assembly (1) comprises a U-shaped supporting frame (101), a through shaft hole (102) is formed in each of opposite inner walls of the U-shaped supporting frame (101), a motor base (103) is fixedly installed on the outer surface of the U-shaped supporting frame (101), and a first driving motor (104) is fixedly installed above the motor base (103);

the rotating assembly (2) comprises a rotating plate (201), a first connecting disc (202) is fixedly mounted on each of two side faces of the rotating plate (201), a rotating shaft (203) is fixedly mounted on one end face, away from the rotating plate (201), of the first connecting disc (202), the rotating shaft (203) penetrates through the shaft hole (102), a second connecting disc (204) is fixedly mounted on one end face, away from the first connecting disc (202), of the rotating shaft (203), the second connecting disc (204) is fixedly connected with an output end of the first driving motor (104), a strip-shaped groove (205) is formed in the rotating plate (201), a reverse threaded screw rod (206) is rotatably connected to the inside of the strip-shaped groove (205), a first toothed ring (207) is fixedly connected to one end of the reverse threaded screw rod (206), and a second driving motor (208) is fixedly mounted on the upper surface of the rotating plate (201), the output end of the second driving motor (208) is fixedly provided with a first gear (209), the first gear (209) is meshed with a first toothed ring (207) for connection, the reverse thread screw rod (206) is connected with two symmetrically-arranged sliding blocks (211) in a sliding manner, each sliding block (211) is fixedly provided with a U-shaped plate (210) above, the middle part of the upper surface of the U-shaped plate (210) is connected with a limit bolt (213) in a threaded manner, the bottom end of the limit bolt (213) is connected with a clamping plate (212) in a rotating manner through a bearing, both ends of the upper surface of the clamping plate (212) are fixedly provided with a guide column (214), the top end of the guide column (214) penetrates through the inner top surface of the U-shaped plate (210) and extends to the outer side of the U-shaped plate (210), a PLC circuit board (215) is clamped between the inner bottom surface of the U-shaped plate (210) and the lower surface of the clamping plate (212), a first pressure sensor is arranged in the U-shaped groove (216) of the U-shaped plate (210);

the ash cleaning component (3) comprises two supports (301), the two supports (301) are fixedly mounted on the upper surface of the rear side of the rotating plate (201), a one-way threaded lead screw (302) is rotatably connected between the two supports (301), one end of the one-way threaded lead screw (302) is fixedly mounted with a second toothed ring (303), the ash cleaning component (3) further comprises a third driving motor (304), the third driving motor (304) is fixedly mounted on the rotating plate (201), the output end of the third driving motor (304) is fixedly mounted with a second gear (305), the second gear (305) is meshed with the second toothed ring (303) for connection, the one-way threaded lead screw (302) is slidably connected with a square moving block (306), a rectangular groove (307) is formed in the square moving block (306), and a vertical column (308) is fixedly mounted in the rectangular groove (307), the outer side of the upright post (308) is connected with a lifting block (309) in a sliding mode, a first buffer spring (310) is sleeved on the peripheral side face of the upright post (308) and located between the upper surface of the lifting block (309) and the inner top face of the rectangular groove (307), and a second pressure sensor is arranged between the upper end portion of the first buffer spring (310) and the upper inner wall of the rectangular groove (307); a transverse plate (311) is arranged below the lifting block (309), a plurality of groups of cleaning mechanisms (4) are arranged below the transverse plate (311), each cleaning mechanism (4) comprises a supporting rod (401), and the supporting rods (401) penetrate through the lower surface of the transverse plate (311) and extend into a cavity in the transverse plate (311); the upper end part of the supporting rod (401) positioned in the cavity in the transverse plate (311) is connected with a second buffer spring (402) in the cavity of the transverse plate (311); soft bristles (403) are arranged at the lower end parts of the supporting rods (401) extending out of the transverse plate (311).

2. The PLC circuit board surface ash removal device of claim 1, wherein: a shock pad is fixedly installed between the motor base (103) and the first driving motor (104), and the shock pad is a component made of rubber.

3. The PLC circuit board surface ash removal device of claim 1, wherein: the bottom end of the limiting bolt (213) is fixedly connected with the inner ring of the bearing, and the upper surface of the clamping plate (212) is fixedly connected with the outer ring of the bearing.

4. The PLC circuit board surface ash removal device of claim 1, wherein: two and guide post (214) assorted guide ways have been seted up to the upper surface of "U" shaped plate (210), guide post (214) pass the guide way, the diameter of guide post (214) is the same with the internal diameter of guide way, and the week side of guide post (214) and the inner wall of guide way are all smooth.

5. The PLC circuit board surface ash removal device of claim 1, wherein: a gasket is fixedly arranged on the inner bottom surface of the U-shaped plate (210) and the lower surface of the clamping plate (212), and the gasket is a rubber component.

6. The PLC circuit board surface ash removal device of claim 1, wherein: the lower surface of the square moving block (306) is in contact with the upper surface of the rotating plate (201), and the lower surface of the square moving block (306) and the upper surface of the rotating plate (201) are smooth.

7. The PLC circuit board surface ash removal device of claim 1, wherein: the supporting rod (401) comprises an upper rigid supporting rod (404), and the rigid supporting rod (404) is made of a rigid material and is connected with the second buffer spring (402); the lower part of the rigid support rod (404) of the support rod (401) is a flexible support rod (405), and the flexible support rod (405) is made of flexible materials and is connected with the flexible hairbrush (403).

8. The PLC circuit board surface ash removal device of claim 1, wherein: the stiffness coefficient of the second buffer spring (402) is smaller than the stiffness coefficient of the first buffer spring (310).

9. The PLC circuit board surface ash removal device of claim 1, wherein: the first buffer spring (310) and the second buffer spring (402) are in a natural telescopic state, and the bottom ends of the soft bristles (403) are in contact with the upper surface of the PLC circuit board (215).