CN109865623B

CN109865623B - Spraying device

Info

Publication number: CN109865623B
Application number: CN201910223817.8A
Authority: CN
Inventors: 余丹丹
Original assignee: Jiangsu Pengfei Automation Machinery Co ltd
Current assignee: Jiangsu Pengfei Automation Machinery Co.,Ltd.
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-08-25
Anticipated expiration: 2039-03-22
Also published as: CN109865623A

Abstract

The invention discloses a spraying device which comprises a frame body and a spraying cavity, wherein the spraying cavity is arranged in the frame body and is provided with a forward opening, transverse frames extending forwards and backwards are symmetrically arranged in the inner walls of the left side and the right side of the spraying cavity, dovetail grooves extending forwards and backwards are arranged in the end surfaces of the inner sides of the transverse frames, dovetail blocks are slidably arranged in the dovetail grooves, a spraying frame positioned between the left dovetail block and the right dovetail block is arranged in the spraying cavity, and a first mounting cavity is arranged in the end surface of the top of the spraying frame; the device has simple structure and convenient use, can realize omnibearing spraying operation on the surface of the metal plate, and can greatly improve the spraying efficiency and the spraying uniformity; meanwhile, the device has the advantages of high automation degree and the like compared with the traditional spraying device, can greatly reduce labor output and use cost, and is suitable for popularization and use.

Description

Spraying device

Technical Field

The invention relates to the technical field of metal plate processing, in particular to a spraying device.

Background

The surface of the metal plate is often sprayed in the processing process of the metal plate, and the operation is mostly operated manually by manpower in the prior art, so that the spraying efficiency is low, and the spraying effect is poor;

the existing automatic spraying equipment has more functions, but the use cost is higher, the functions are single, the multidirectional spraying operation cannot be realized, the defects are great, and the improvement is needed.

Disclosure of Invention

Aiming at the technical defects, the invention provides a spraying device.

The invention relates to a spraying device, which comprises a frame body and a spraying cavity which is arranged in the frame body and is provided with a forward opening, wherein cross frames extending forwards and backwards are symmetrically arranged on the inner walls of the left side and the right side of the spraying cavity, dovetail grooves extending forwards and backwards are arranged in the end surfaces of the inner sides of the cross frames, dovetail blocks are slidably arranged in the dovetail grooves, a spraying frame positioned between the left dovetail block and the right dovetail block is arranged in the spraying cavity, a first mounting cavity is arranged in the end surface of the top of the spraying frame, a first rotating sleeve is rotatably arranged in the first mounting cavity through a rotating bearing, a threaded hole is arranged in the first rotating sleeve, a threaded rod extending leftwards and rightwards is arranged in the threaded hole in a threaded fit manner, the extending ends of the left side and the right side of the threaded rod are respectively and fixedly connected with the left dovetail block and the right dovetail block, a second mounting cavity is arranged, a spline groove is formed in the second rotating sleeve, a spline shaft extending left and right is installed in the spline groove in a matched mode, a moving groove with a downward opening is formed in the end face of the bottom of the dovetail block, a first rotating cavity is formed in the end wall of one side of the moving groove, the extending end of the outer side of the spline shaft penetrates through the moving groove and extends into the first rotating cavity, a first bevel gear is fixedly arranged on the spline shaft in the first rotating cavity, a moving gear with an outer circle extending out of the end face of the bottom of the dovetail block is fixedly arranged on the spline shaft in the moving groove, and an internal tooth groove meshed with the moving gear is formed in the front and back extending mode of the inner wall of the dovetail groove;

the dovetail block is internally provided with a pushing mechanism for driving the dovetail block to move backwards and a resetting mechanism for resetting the dovetail block;

and a driving mechanism for driving the spraying frame to slide left and right is arranged in the spraying frame.

According to a further technical scheme, the driving mechanism comprises a driving cavity and a sliding cavity, the driving cavity is arranged in the upper end wall and the lower end wall of the first mounting cavity, the sliding cavity is arranged on the inner bottom wall of the driving cavity, a left bevel gear and a right bevel gear which are located in the driving cavity are fixedly arranged on the excircle of the first rotating sleeve, a sliding block is arranged in the sliding cavity in a sliding mode, a driving motor is fixedly arranged in the end face of the top of the sliding block, the top of the driving motor is in power connection with a second bevel gear, and through grooves with outward openings are symmetrically arranged in the inner walls of the;

the spraying frame comprises a spraying frame body, a through groove, a plugging plate and a spraying frame body, wherein inserting grooves with outward openings are symmetrically formed in the end faces of the left side and the right side of the spraying frame body;

the top wall in the plugging groove is provided with a first jacking spring fixedly connected with the top of the plugging plate, and the end face of the bottom of the plugging plate is provided with a jacking inclined plane.

According to a further technical scheme, the pushing mechanism comprises a pushing groove arranged in the dovetail block and a pushing rod arranged in the pushing groove, the outer end of the pushing rod extends into the spraying cavity, a stop block in sliding fit connection with the pushing groove is fixedly arranged on the pushing rod, and a second pushing spring fixedly connected with the stop block is arranged in the inner wall of one side of the pushing groove;

a second rotating cavity is communicated with the inner wall of one side of the pushing groove, a third rotating cavity is formed in the bottom wall of the second rotating cavity, a first rotating shaft is installed between the second rotating cavity and the third rotating cavity in a rotating fit mode, a third bevel gear is fixedly arranged on the first rotating shaft in the third rotating cavity, a rotating disc is fixedly arranged on the first rotating shaft in the second rotating cavity, a rotating column is installed on the end face of the top of the rotating disc in a rotating fit mode, and the rotating column and the pushing rod are installed in a hinged mode through a connecting rod;

the bottom wall of the third rotating cavity is provided with an annular cavity, a second rotating shaft penetrating through the annular cavity is arranged between the first rotating cavity and the third rotating cavity, a fourth bevel gear is fixedly arranged on the second rotating shaft in the third rotating cavity, a jacking inclined block is fixedly arranged on the second rotating shaft in the annular cavity, and a fifth bevel gear meshed with the first bevel gear is fixedly arranged on the second rotating shaft in the first rotating cavity.

According to a further technical scheme, the reset mechanism comprises a second sliding groove arranged in the end wall of one side of the third rotating cavity and a movable groove arranged on the inner bottom wall of the second sliding groove and communicated with the annular cavity, a sliding table is slidably mounted in the second sliding groove, a sixth bevel gear meshed with the third bevel gear and the fourth bevel gear is rotatably mounted in the end face of one side of the sliding table in a matched manner, and a third jacking spring fixedly connected with the sliding table is arranged in the inner wall of one side of the second sliding groove;

the end face of the bottom of the sliding table is fixedly provided with a linkage block extending into the movable groove, a sliding plate is slidably mounted in the movable groove, a fourth jacking spring fixedly connected with the sliding plate is fixedly arranged on the inner wall of one side of the movable groove, and an action inclined block extending into the annular cavity is fixedly arranged on the end face of the sliding plate far away from the fourth jacking spring;

permanent magnets are arranged in the end faces, far away from the acting inclined blocks, of the sliding plates, and an electromagnetic driving device matched with the permanent magnets is arranged in the inner wall of one side of the movable groove;

and a torsion cavity is arranged in the dovetail block between the annular cavity and the first rotating cavity, and a torsion spring fixedly connected with the second rotating shaft is arranged in the torsion cavity.

The jacking force of the torsion spring is smaller than that of the second jacking spring, so that the jacking rod can be automatically reset.

According to the further technical scheme, a lifting groove is formed in the inner bottom wall of the spraying cavity, a lifting plate is slidably mounted in the lifting groove, a hydraulic cylinder is arranged on the inner bottom wall of the lifting groove, a hydraulic rod of the hydraulic cylinder is fixedly connected with the lifting plate, and a nozzle is arranged at the bottom of the spraying frame.

According to a further technical scheme, an inclined plane inserted bar aligned with the slot is fixedly arranged on the end face of one side of the dovetail block.

In conclusion, the device has simple structure and convenient use, can realize omnibearing spraying operation on the surface of the metal plate, and can greatly improve the spraying efficiency and the spraying uniformity; meanwhile, the device has the advantages of high automation degree and the like compared with the traditional spraying device, can greatly reduce labor output and use cost, and is suitable for popularization and use.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

Fig. 1 is a schematic structural diagram of a spraying device according to the present invention.

Fig. 2 is a schematic view of the internal structure of the spray frame in fig. 1.

FIG. 3 is a schematic view of the internal structure of the dovetail block of FIG. 1.

Fig. 4 is a schematic view of the structure in the direction of the arrow in fig. 3.

Detailed Description

As shown in fig. 1-4, the spraying device of the present invention includes a frame body 10 and a spraying cavity 11 disposed in the frame body 10 and having a forward opening, wherein cross frames 12 extending forward and backward are symmetrically disposed in inner walls of left and right sides of the spraying cavity 11, dovetail grooves 121 extending forward and backward are disposed in end faces of inner sides of the cross frames 12, dovetail blocks 13 are slidably mounted in the dovetail grooves 121, a spraying frame 48 disposed between the left and right dovetail blocks 13 is disposed in the spraying cavity 11, a first mounting cavity is disposed in an end face of a top of the spraying frame 48, a first rotating sleeve 52 is rotatably mounted in the first mounting cavity through a rotating bearing, a threaded hole is disposed in the first rotating sleeve 52, a threaded rod 43 extending leftward and rightward is mounted in the threaded hole in a threaded fit manner, extending ends of left and right sides of the threaded rod 43 are fixedly connected to the left and right dovetail blocks 13 respectively, a second mounting cavity is arranged in the end face of the bottom of the spraying frame 48, a second rotating sleeve 59 is rotatably mounted in the second mounting cavity through a rotating bearing, the second rotating sleeve 59 is provided with spline grooves, spline shafts 28 extending left and right are fitted in the spline grooves, a moving groove 29 with a downward opening is arranged in the end surface of the bottom of the dovetail block 13, a first rotating cavity 26 is arranged in the end wall of one side of the moving groove 29, the spline shaft 28 extends through the moving groove 29 and into the first rotating chamber 26 at its outer end, a first bevel gear 27 is fixedly arranged on the spline shaft 28 in the first rotating cavity 26, a moving gear 30 with an outer circle extending out of the end surface of the bottom of the dovetail block 13 is fixedly arranged on the spline shaft 28 in the moving groove 29, an inner tooth groove 122 engaged with the moving gear 30 is formed in the inner wall of the dovetail groove 121 in a forward and backward extending manner; a pushing mechanism for driving the dovetail block 13 to move backwards and a resetting mechanism for resetting the dovetail block 13 are arranged in the dovetail block 13; the spraying frame 48 is provided with a driving mechanism for driving the spraying frame 48 to slide left and right.

Beneficially, the driving mechanism comprises a driving cavity 49 arranged in the upper and lower end walls of the first mounting cavity and a sliding cavity 62 arranged in the inner bottom wall of the driving cavity 49, a left bevel gear 50 and a right bevel gear 51 located in the driving cavity 49 are fixedly arranged on the outer circle of the first rotating sleeve 52, a sliding block 61 is slidably arranged in the sliding cavity 62, a driving motor 63 is fixedly arranged in the top end surface of the sliding block 61, a second bevel gear 64 is dynamically connected to the top of the driving motor 63, and through grooves 55 with outward openings are symmetrically arranged in the inner walls of the left and right sides of the sliding cavity 62;

the spraying frame 48 is provided with slots 58 with outward openings symmetrically in the left and right end faces, a plugging groove 53 is communicated between the slots 58 and the through groove 55, a plugging plate 56 is slidably mounted in the plugging groove 53, and a through hole 57 penetrating from left to right is formed in the plugging plate 56;

the inner top wall of the plugging groove 53 is provided with a first top pressure spring 54 fixedly connected with the top of the plugging plate 56, and the end face of the bottom of the plugging plate 56 is provided with a top pressure inclined plane.

Beneficially, the pushing mechanism includes a pushing groove 46 disposed in the dovetail block 13 and a pushing rod 42 disposed in the pushing groove 46 and having an outer end extending into the spraying cavity 11, a stopper 44 connected with the pushing groove 46 in a sliding fit is fixedly disposed on the pushing rod 42, and a second pushing spring 45 fixedly connected with the stopper 44 is disposed in an inner wall of one side of the pushing groove 46;

a second rotating cavity 14 is communicated with the inner wall of one side of the pushing groove 46, a third rotating cavity 16 is arranged on the inner bottom wall of the second rotating cavity 14, a first rotating shaft 152 is installed between the second rotating cavity 14 and the third rotating cavity 16 in a rotating matching manner, a third bevel gear 17 is fixedly arranged on the first rotating shaft 152 in the third rotating cavity 16, a rotating disc 15 is fixedly arranged on the first rotating shaft 152 in the second rotating cavity 14, a rotating column 151 is installed on the top end surface of the rotating disc 15 in a rotating matching manner, and the rotating column 151 and the pushing rod 42 are hinged through a connecting rod 47;

an annular cavity 21 is formed in the bottom wall of the third rotating cavity 16, a second rotating shaft 20 penetrating through the annular cavity 21 is arranged between the first rotating cavity 26 and the third rotating cavity 16, a fourth bevel gear 19 is fixedly arranged on the second rotating shaft 20 in the third rotating cavity 16, a jacking inclined block 22 is fixedly arranged on the second rotating shaft 20 in the annular cavity 21, and a fifth bevel gear 25 meshed with the first bevel gear 27 is fixedly arranged on the second rotating shaft 20 in the first rotating cavity 26.

Advantageously, the resetting mechanism comprises a second sliding groove 40 arranged in an end wall on one side of the third rotating cavity 16 and a movable groove 37 arranged in an inner bottom wall of the second sliding groove 40 and communicated with the annular cavity 21, a sliding table 41 is slidably mounted in the second sliding groove 40, a sixth bevel gear 18 meshed with the third bevel gear 17 and the fourth bevel gear 19 is rotatably fitted in an end surface on one side of the sliding table 41, and a third top pressure spring 38 fixedly connected with the sliding table 41 is arranged in an inner wall on one side of the second sliding groove 40;

the end face of the bottom of the sliding table 41 is fixedly provided with a linkage block 35 extending into the movable groove 37, the movable groove 37 is slidably provided with a sliding plate 32, the inner wall of one side of the movable groove 37 is fixedly provided with a fourth jacking spring 34 fixedly connected with the sliding plate 32, and the end face of the sliding plate 32 far away from the fourth jacking spring 34 is fixedly provided with an action inclined block 31 extending into the annular cavity 21;

a permanent magnet 33 is arranged in the end face of the sliding plate 32 far away from the action inclined block 31, and an electromagnetic driving device 36 matched with the permanent magnet 33 is arranged in the inner wall of one side of the movable groove 37;

a torsion cavity 24 is arranged in the dovetail block 13 between the annular cavity 21 and the first rotating cavity 26, and a torsion spring 23 fixedly connected with the second rotating shaft 20 is arranged in the torsion cavity 24.

The pressing force of the torsion spring 23 is smaller than the pressing force of the second pressing spring 45, so that the ejector rod 42 can be automatically reset.

Advantageously, a lifting groove is formed in the inner bottom wall of the spraying cavity 11, a lifting plate 65 is slidably mounted in the lifting groove, a hydraulic cylinder 66 is arranged on the inner bottom wall of the lifting groove, a hydraulic rod of the hydraulic cylinder 66 is fixedly connected with the lifting plate 65, and a nozzle 60 is arranged at the bottom of the spraying frame 48.

Advantageously, a bevel insertion rod 39 aligned with the insertion slot 58 is fixedly arranged on one side end face of the dovetail block 13.

In the initial state of the device of the invention, the spraying frame 48 is located at the middle position between the left and right dovetail blocks 13, the front end face of the dovetail block 13 abuts against the front inner wall of the dovetail groove 121, the bottom of the blocking plate 56 extends into the slot 58 under the urging of the first urging spring 54, the through hole 57 is not communicated with the through groove 55, the left end face of the sliding block 61 abuts against the left inner wall of the sliding cavity 62, the second bevel gear 64 is engaged with the left bevel gear 50, the urging rod 42 extends into the spraying cavity 11 to the maximum extent under the urging of the second urging spring 45, the side end face of the sliding table 41 abuts against the inner wall of the second sliding cavity 40 under the urging of the third urging spring 38, and the sixth bevel gear 18 is engaged with the third bevel gear 17 and the fourth bevel gear 19, under the pressure of the fourth pressure spring 34, one side end face of the sliding plate 32 abuts against one side inner wall of the movable groove 37, the acting inclined block 31 extends into the annular cavity 21 to the maximum extent, and at this time, the electromagnetic driving device 36 is in a power-off state.

When the spraying device is used, firstly, a metal plate is placed on the lifting plate 65, the metal plate is lifted to a desired spraying height by using the hydraulic cylinder 66, then the nozzle 60 is controlled to be opened for spraying operation, meanwhile, the driving motor 61 is controlled to rotate, the driving motor 61 can drive the left bevel gear 50 to drive the first rotating sleeve 52 to rotate clockwise after rotating, the spraying frame 48 can be driven to slide leftwards by matching with the threaded rod 43 after rotating clockwise the first rotating sleeve 52, the ejector rod 42 can be inserted into the through groove 55 to abut against the blocking plate 56 after sliding leftwards the spraying frame 48 can be pressed against the ejector rod 42 to slide leftwards, the rotating disc 15 can be driven to rotate by the connecting rod 47 after sliding leftwards the ejector rod 42, and the first rotating shaft 152, The third bevel gear 17, the sixth bevel gear 18, the fourth bevel gear 19, the second rotating shaft 20, the jacking inclined block 22, the fifth bevel gear 25, the first bevel gear 27 and the spline shaft 28 rotate, the spline shaft 28 can rotate with the left and right moving gears 30 for 180 degrees, when the left end surface of the spray frame 48 abuts against the inner end surface of the dovetail block 13, the inclined insertion rod 39 is inserted into the slot 58 and jacks the plugging plate 56 to slide upwards, when the through hole 57 is aligned with the through groove 55, under the jacking of the second jacking spring 45, the jacking rod 42 penetrates through the through groove 55 of the sliding block to jack the sliding block 61 to drive the driving motor 63 to slide rightwards, when the jacking rod 42 extends into the sliding cavity 62 to the maximum extent, under the driving of the jacking rod 42, the rotating disc 15 continues to rotate for 180 degrees, and the moving gears 30 rotate for a circle, the dovetail block 13 and the spraying frame 48 can be driven to move backwards for a certain distance, at this time, the torsion spring 23 is in a torsional state, and under the action of the action inclined block 31, the jacking inclined block 22 is blocked and cannot rotate reversely, so that the torsional force storage state of the torsion spring 23 can be ensured, and the spraying frame 48 can move backwards to operate by reciprocating;

the right end surface of the sliding block 61 abuts against the right inner wall of the sliding cavity 62, the second bevel gear 64 is meshed with the right bevel gear 51, the driving motor 63 can drive the first rotating sleeve 52 to rotate reversely after rotating continuously, the first rotating sleeve 52 can drive the spraying frame 48 to move rightwards after rotating reversely, and therefore the spraying frame 48 can move rightwards and rightwards in a reciprocating mode;

after the spraying is finished, the electromagnetic driving device 36 is controlled to be electrified, the electromagnetic driving device 36 can be electrified to absorb the permanent magnet 33 to drive the sliding plate 32 to move towards one side, the sliding plate 32 can drive the sliding block 41 and the sixth bevel gear 18 to move towards one side through the linkage block 35 after moving towards one side, when the sixth bevel gear 18 is separated from the third bevel gear 17 and the fourth bevel gear 19, the acting inclined block 31 is separated from the jacking inclined block 22 under the driving of the sliding plate 32, at this time, under the action of the torsion spring 23, the second rotating shaft 20 drives the jacking inclined block 22, the fifth bevel gear 25, the first bevel gear 27, the spline shaft 28 and the moving gear 30 to rotate in the reverse direction, and the moving gear 30 can drive the left dovetail block 13 and the right dovetail block 13 and the spraying frame 48 to slide forward through the reverse rotation, after the torsion spring 23 is reset, the end surface of the front side of the dovetail block 13 is abutted against the inner wall of the front side of the dovetail groove 121, and the device of the invention is restored to the initial state.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a spraying device, includes the support body and set up in the support body and the forward spraying chamber of opening, its characterized in that: the inner walls of the left side and the right side of the spraying cavity are symmetrically provided with transverse frames extending forwards and backwards, the inner side end faces of the transverse frames are internally provided with dovetail grooves extending forwards and backwards, dovetail blocks are slidably mounted in the dovetail grooves, the spraying cavity is internally provided with a spraying frame positioned between the left dovetail block and the right dovetail block, the top end face of the spraying frame is internally provided with a first mounting cavity, a first rotating sleeve is rotatably mounted in the first mounting cavity through a rotating bearing, a threaded hole is formed in the first rotating sleeve, a threaded rod extending leftwards and rightwards is mounted in the threaded hole in a threaded fit manner, the extending ends of the left side and the right side of the threaded rod are respectively fixedly connected with the left dovetail block and the right block, a second mounting cavity is arranged in the end face of the bottom of the spraying frame, a second rotating sleeve is rotatably mounted in the second mounting cavity through a rotating bearing, a spline groove is formed in the, a moving groove with a downward opening is formed in the end face of the bottom of the dovetail block, a first rotating cavity is formed in the end wall of one side of the moving groove, the extending end of the outer side of the spline shaft penetrates through the moving groove and extends into the first rotating cavity, a first bevel gear is fixedly arranged on the spline shaft in the first rotating cavity, a moving gear with an outer circle extending out of the end face of the bottom of the dovetail block is fixedly arranged on the spline shaft in the moving groove, and an internal tooth groove meshed with the moving gear is formed in the front-back extending manner of the inner wall of the dovetail groove; the dovetail block is internally provided with a pushing mechanism for driving the dovetail block to move backwards and a resetting mechanism for resetting the dovetail block; the spraying frame is internally provided with a driving mechanism for driving the spraying frame to slide left and right; the driving mechanism comprises a driving cavity arranged in the upper end wall and the lower end wall of the first mounting cavity and a sliding cavity arranged in the inner bottom wall of the driving cavity, a left bevel gear and a right bevel gear which are positioned in the driving cavity are fixedly arranged on the excircle of the first rotating sleeve, a sliding block is arranged in the sliding cavity in a sliding manner, a driving motor is fixedly arranged in the end face of the top of the sliding block, the top of the driving motor is in power connection with a second bevel gear, and through grooves with outward openings are symmetrically arranged in the inner walls of the left side and the right side of the sliding cavity; the spraying frame comprises a spraying frame body, a through groove, a plugging plate and a spraying frame body, wherein inserting grooves with outward openings are symmetrically formed in the end faces of the left side and the right side of the spraying frame body; the top wall in the plugging groove is provided with a first jacking spring fixedly connected with the top of the plugging plate, and the end face of the bottom of the plugging plate is provided with a jacking inclined plane; the pushing mechanism comprises a pushing groove arranged in the dovetail block and a pushing rod arranged in the pushing groove, the outer end of the pushing rod extends into the spraying cavity, a stop block in sliding fit connection with the pushing groove is fixedly arranged on the pushing rod, and a second pushing spring fixedly connected with the stop block is arranged in the inner wall of one side of the pushing groove; a second rotating cavity is communicated with the inner wall of one side of the pushing groove, a third rotating cavity is formed in the bottom wall of the second rotating cavity, a first rotating shaft is installed between the second rotating cavity and the third rotating cavity in a rotating fit mode, a third bevel gear is fixedly arranged on the first rotating shaft in the third rotating cavity, a rotating disc is fixedly arranged on the first rotating shaft in the second rotating cavity, a rotating column is installed on the end face of the top of the rotating disc in a rotating fit mode, and the rotating column and the pushing rod are installed in a hinged mode through a connecting rod; an annular cavity is formed in the bottom wall of the third rotating cavity, a second rotating shaft penetrating through the annular cavity is arranged between the first rotating cavity and the third rotating cavity, a fourth bevel gear is fixedly arranged on the second rotating shaft in the third rotating cavity, a jacking inclined block is fixedly arranged on the second rotating shaft in the annular cavity, and a fifth bevel gear meshed with the first bevel gear is fixedly arranged on the second rotating shaft in the first rotating cavity; the reset mechanism comprises a second sliding groove arranged in the end wall of one side of the third rotating cavity and a movable groove which is arranged on the inner bottom wall of the second sliding groove and communicated with the annular cavity, a sliding table is slidably arranged in the second sliding groove, a sixth bevel gear meshed with the third bevel gear and the fourth bevel gear is rotatably arranged in the end face of one side of the sliding table in a matched manner, and a third jacking spring fixedly connected with the sliding table is arranged in the inner wall of one side of the second sliding groove; the end face of the bottom of the sliding table is fixedly provided with a linkage block extending into the movable groove, a sliding plate is slidably mounted in the movable groove, a fourth jacking spring fixedly connected with the sliding plate is fixedly arranged on the inner wall of one side of the movable groove, and an action inclined block extending into the annular cavity is fixedly arranged on the end face of the sliding plate far away from the fourth jacking spring; permanent magnets are arranged in the end faces, far away from the acting inclined blocks, of the sliding plates, and an electromagnetic driving device matched with the permanent magnets is arranged in the inner wall of one side of the movable groove; a torsion cavity is arranged in the dovetail block between the annular cavity and the first rotating cavity, and a torsion spring fixedly connected with the second rotating shaft is arranged in the torsion cavity; the jacking force of the torsion spring is smaller than that of the second jacking spring, so that the jacking rod can be automatically reset; a lifting groove is formed in the inner bottom wall of the spraying cavity, a lifting plate is slidably mounted in the lifting groove, a hydraulic cylinder is arranged on the inner bottom wall of the lifting groove, a hydraulic rod of the hydraulic cylinder is fixedly connected with the lifting plate, and a nozzle is arranged at the bottom of the spraying frame; and an inclined plane inserted bar aligned with the slot is fixedly arranged on the end face of one side of the dovetail block.