CN115240926A

CN115240926A - Enameled wire uniform paint spraying system based on gravity correction

Info

Publication number: CN115240926A
Application number: CN202210995619.5A
Authority: CN
Inventors: 段闰哲
Original assignee: Weihui Yunbo Enameled Wire Co ltd
Current assignee: Weihui Yunbo Enameled Wire Co ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-10-25

Abstract

The invention relates to the technical field of preparation of enameled wires for motor windings of hoisting equipment, in particular to a gravity correction-based enameled wire uniform paint spraying system. The beneficial effects of the invention are as follows: the paint thickness is prevented from being gradually increased from top to bottom due to the influence of gravity in the drying process, the paint thickness on the surface of the wire rod is uneven after the wire rod is dried, the uniformity of the outer diameter of the enameled wire product is guaranteed, the later winding of the enameled wire is facilitated, the phenomenon that paint cracks and the wire rod is exposed in the winding process due to the fact that the local thickness is too large is avoided, the consistency of the electrical performance of the winding made of the enameled wire is guaranteed, and the control of the electrical performance of the winding is facilitated.

Description

Enameled wire uniform paint spraying system based on gravity correction

Technical Field

The invention relates to the technical field of preparation of enameled wires for motor windings of hoisting equipment, in particular to an enameled wire uniform paint spraying system based on gravity correction.

Background

As an important component of hoisting equipment, a motor is generally a power supply part, an enameled wire is an important component of a winding wire of the motor, and is composed of an intermediate wire (generally made of a conductor such as copper, aluminum, etc.) and an insulating layer, and the preparation thereof is generally made by two steps, namely, adhering liquid paint to the outer surface of the wire, and drying the liquid paint adhered to the outer surface of the wire, wherein the step one mainly comprises the following three methods:

1. the method comprises the steps that a through cavity is formed in the middle of a die, a liquid injection hole is formed in the side edge of the die, the liquid injection hole is communicated inwards to the through cavity and outwards to a paint conveying pipeline for conveying liquid paint, the liquid paint is conveyed continuously through the liquid injection hole in the cavity, then the wire rod in the cavity is pulled from one end to the other end, and therefore the liquid paint is adhered to the outer surface of the wire rod when the wire rod passes through the through cavity, and then the liquid paint is dried;

2. a felt method in which a wire is penetrated through a coating film and a liquid paint is adsorbed thereon, thereby adhering the liquid paint to an outer surface of the wire;

3. and in the electrophoresis method, under the action of an electrode, paint in the mixed liquid is gathered and adhered to the surface of the wire.

No matter which method is adopted to adhere the liquid paint on the surface of the wire rod, the liquid paint on the surface of the wire rod flows downwards due to the action of gravity during the drying process from the step of detaching the liquid paint to the step of drying, so that the thickness of the liquid paint on the surface of the wire rod is gradually increased along the direction from top to bottom, and finally, the thickness of the paint outside the enameled wire is gradually increased from top to bottom, the paint above the enameled wire is thin, the insulating property is poor, and the insulating property of the enameled wire is greatly influenced; the lower paint is thick, and the winding performance is poor (when the enameled wire is wound, the winding is difficult due to the excessively thick paint, the bending resistance is increased, and if the enameled wire is wound by force, the paint at the excessively thick position of the paint is cracked, so that the uniformity of the enameled wire is further influenced by the exposure of the wire); meanwhile, the thickness of paint outside the wire rod is uneven, so that the cross section of the wire rod is approximately in a water drop shape instead of a circular shape, the tightness between the wire rod and the wire rod can be influenced when the wire rod with the non-circular cross section is wound to form a winding, the interval between the wire rod and the wire rod is random and uncertain, the integral winding length of the wire rod on the winding can be influenced, the electrical performance (such as resistance and the like) of the winding is influenced, and the performance of a motor serving as the motor winding is influenced.

Therefore, there is a need for a uniform lacquering system for enamel wire based on gravity correction to solve the above problems.

Disclosure of Invention

In order to solve the above problems, namely to solve the problems that the insulation property (the position where the insulation layer is thin) is poor (the position where the insulation layer is thick) caused by the non-uniform thickness of the insulation layer outside the wire rod is inconvenient to wind, the insulation property is lost due to the crack of the insulation layer after winding, the non-uniform thickness of the whole body is not beneficial to winding, and the electrical property (such as resistance) of the whole winding cannot be ensured, the invention provides a gravity correction-based enameled wire uniform paint spraying system, which comprises:

the device comprises slideways, a plurality of supporting rods and a plurality of fixing devices, wherein the slideways are vertically arranged and are oppositely arranged;

the paint spraying drying cylinder is characterized by comprising a paint spraying drying cylinder, sliding blocks are rotatably arranged at two ends of the paint spraying drying cylinder under the driving of a rotating mechanism, the sliding blocks are slidably arranged along the slide ways, paint spraying air holes are formed in the outer surface of the paint spraying drying cylinder, the number of the paint spraying air holes is at least three, the at least three paint spraying air holes are uniformly distributed along the axis of the paint spraying drying cylinder, and the paint spraying air holes are arranged along the axis direction of the paint spraying drying cylinder;

the drying mechanism is arranged in the paint spraying drying cylinder and used for heating the paint spraying drying cylinder;

each sliding block is fixed with one wire fixing seat, and the wire fixing seats form fixing parts for fixing the end parts of wires;

the paint spraying mechanism comprises a paint spraying pump and a paint spraying head which are connected through a paint spraying pipe, and the paint spraying head is fixed on the paint spraying drying cylinder and corresponds to the paint spraying air holes in position; and (c) a second step of,

the lifting mechanism is arranged between the slide way and the sliding block; and the number of the first and second groups,

the control end of the rotating mechanism and the control end of the lifting mechanism are in signal connection with the controller, and the controller is configured to:

the slide block ascends along the slide way under the driving of the lifting mechanism;

when the sliding block descends, the lifting mechanism is separated or partially separated from traction on the sliding block.

Further, a telescopic driving mechanism is further installed between the paint spraying head and the paint spraying drying cylinder, and under the action of the telescopic driving mechanism, the paint spraying head is movably installed on the paint spraying drying cylinder in the direction close to/far away from the paint spraying air holes.

Furthermore, an anti-blowing baffle is rotatably mounted on the sliding block, the anti-blowing baffle is positioned outside the paint spraying drying cylinder, and the anti-blowing baffle extends along an arc with the axis of the paint spraying drying cylinder as the radius;

one side of the anti-blowing baffle, which is far away from the paint spraying drying cylinder, forms an arc-shaped flow guide part, and the flow guide part extends along the axis direction of the paint spraying drying cylinder;

the width of the anti-blowing baffle is larger than that of the paint spraying air holes.

Furthermore, the anti-blowing baffle faces one side of the paint spraying drying cylinder to form an avoiding groove for the paint spraying head and the paint spraying pipe to pass through.

Further, both ends of the anti-blowing baffle extend outwards along the axial direction to form a limiting part abutted with the slide way.

Further, slewing mechanism is including the rotation motor, turned angle measuring unit, driving gear and the driven gear that the transmission is connected in proper order, wherein:

the shell of the rotating motor is fixed on the sliding block, and the control end of the rotating motor is in signal connection with the controller;

the rotation angle measuring unit is arranged on a rotation shaft of the rotation motor and used for measuring the rotation direction and the rotation angle of the rotation motor, and the signal output end of the rotation angle measuring unit is in signal connection with the controller;

the driving gear is coaxially and fixedly connected with the power output end of the rotating motor;

the driven gear is meshed with the driving gear, and the driven gear is coaxially fixed outside the paint spraying drying cylinder.

Further, elevating system is including elevator motor, lift reel, first rope sheave and the second rope sheave that transmission connects in proper order, wherein:

the shell of the lifting motor is fixed on the slideway, and the control end of the lifting motor is in signal connection with the controller;

the lifting winding drum is rotatably arranged at the upper end of the slideway, a first cable is wound on the lifting winding drum, and the free end of the first cable is fixed on the rotating shaft of the lifting motor;

the first rope pulley and the second rope pulley are rotatably arranged on the slide way and are arranged up and down, and two ends of a second rope are wound on the first rope pulley and the second rope pulley respectively.

Further, the lifting mechanism further comprises a height detection unit, the height detection unit is mounted on the slider and used for detecting the lifting height of the slider, a signal output end of the height detection unit is in signal connection with the controller, and the controller is further configured to:

when the lifting height is more than or equal to H ₀ When H is present ₀ Is 1/5 to 1/4 of the length of the slide way, and the rotating motor drives the first rope wheel to rotate at a linear speed V _{Free falling body} Rotate so that the second sheave is completely released, V _{Free falling body} The speed of the free falling body of the spray painting drying cylinder from a high point is more than or equal to;

when the lifting height is<H ₀ When the first rope wheel is driven to rotate at the speed reduction of the linear speed V by the rotating motor, the force for pulling the second rope wheel upwards is provided, and the V is gradually reduced until the paint spraying drying drum descends to the bottom of the slideway.

Further, the mechanism of spraying paint still includes a winding section of thick bamboo of pipe and the reduction torsion spring of spraying paint, wherein:

the paint spraying pipe winding cylinder is rotatably arranged on the slide way, and the paint spraying pipe is wound on the paint spraying pipe winding cylinder;

the reset torsion spring install in a paint spraying pipe winding section of thick bamboo with between the slide, be used for providing with a paint spraying pipe winding section of thick bamboo with paint spraying pipe winding between the spray head is in elastic restoring force on the paint spraying pipe winding section of thick bamboo.

The invention has the beneficial effects that:

under the pulling action of the lifting mechanism, the slide block is positioned at the upper end of the slide way, the paint spraying drying cylinder which is rotatably arranged in the slide block is also positioned at the upper end of the slide way, the rotating mechanism starts to drive the paint spraying drying cylinder, the paint spraying heads which are fixed on the paint spraying drying cylinder rotate together in a first rotating direction, the paint spraying heads can spray paint on the outer surfaces of wires which are positioned in the paint spraying drying cylinder (in the paint spraying process, two ends of the wires are respectively fixed on one slide block and are kept still), the paint spraying heads can rotate for multiple circles, so that the thickness of each paint spraying is small enough, the paint spraying is more uniform, after the paint spraying is finished (the paint spraying time of the paint spraying heads can be counted by a timer integrated in a controller, and the rotating time of the rotating mechanism can also be counted), the rotating mechanism drives the paint spraying drying cylinder and the spray nozzles to rotate in the opposite direction of the first rotating direction, so that the paint spraying pipes which are wound on the outer surface of the paint spraying drying cylinder are scattered when the paint spraying cylinder rotates in the first rotating direction, and the paint spraying air holes are opened;

the lifting mechanism is driven to separate from traction with the sliding block, the whole formed by the paint spraying drying cylinder and the sliding block freely falls in the vertical direction along the sliding way, the drying mechanism heats the air in the paint spraying drying cylinder and the paint spraying drying cylinder, the paint on the wire is dried under the dual action of the heating and the air flow entering from the paint spraying air holes positioned below, the wire is kept to freely fall in the drying process and is in a weightless state, the phenomenon that the thickness of the dried paint is not uniform due to the fact that the liquid paint flows from the upper end to the lower end of the wire under the influence of gravity is avoided, the outer diameter of the enameled wire product is ensured to be uniform and consistent, the later winding of the enameled wire is facilitated, the phenomenon that the paint is cracked and the wire is exposed in the winding process due to the fact that the local thickness is too large is also avoided, the consistency of the electrical performance of the winding made of the enameled wire is also ensured, and the control over the electrical performance of the winding is facilitated;

before the paint spraying drying cylinder falls, the rotating mechanism drives the paint spraying drying cylinder and the spray head to rotate in the direction opposite to the first rotating direction, so that a paint spraying pipe wound on the outer surface of the paint spraying drying cylinder is scattered when the paint spraying drying cylinder rotates in the first rotating direction, the paint spraying air holes are opened, more air flow can enter the paint spraying air holes from the lower part (at least three paint spraying air holes are uniformly distributed along the circumferential direction, at least one paint spraying air hole can be positioned below the axis) more smoothly in the falling process, and the entering air flow is further beneficial to quick drying of paint;

through the height to the slide, the stoving power of stoving mechanism, the parameter design of the size of the bleeder vent of spraying paint, can guarantee that the stoving section of thick bamboo that sprays paint will descend to before the lower extreme of slide paint can be dried, elevating system intervenes gradually, thereby exert ascending pulling force to the slider, so that the slider, the stoving section of thick bamboo that sprays paint can be slowed down until static, at this moment, take off fix the enameled wire on the wire rod fixing base can, then elevating system drive slider rises, so that the stoving section of thick bamboo that sprays paint resets, so as to be the spraying paint of next enameled wire, it is ready to dry.

Drawings

FIG. 1 is a schematic perspective view of a first viewing angle of an embodiment of a uniform lacquered wire painting system based on gravity correction;

fig. 2 is a schematic perspective view of fig. 1 from another perspective, in which the elevating mechanism and the telescopic driving mechanism are not shown repeatedly for simplicity of drawing;

FIG. 3 is an enlarged partial view of region Z of FIG. 2;

FIG. 4 is a perspective view of the second view angle of FIG. 2;

FIG. 5 is a partial enlarged view of region Y in FIG. 4;

FIG. 6 is a schematic perspective view of a perspective view of the assembled spray drying drum and the blow-out preventing baffle;

FIG. 7 is a top view of FIG. 2;

fig. 8 isbase:Sub>A cross-sectional view of sectionbase:Sub>A-base:Sub>A in fig. 7.

In the figure:

1. a slideway; 11. a chute;

21. a spray paint drying cylinder; 211. spraying air holes; 22. a rotating mechanism; 221. rotating the motor; 222. a driving gear; 223. a driven gear; 23. a slider;

3. a wire fixing seat;

4. a paint spraying mechanism; 41. a paint spray pump; 42. a paint spray pipe; 43. a paint spraying head; 44. a paint spray pipe winding drum;

5. a lifting mechanism; 51. a lifting motor; 52. a lifting drum; 53. a first sheave; 54. a second sheave; 55. a first cable; 56. a second cable;

6. a telescopic driving mechanism; 61. mounting a plate; 62. a telescopic cylinder;

7. a blow-proof baffle plate; 71. a flow guide part; 72. avoiding the groove; 73. a limiting part;

8. a drying mechanism;

9. and (3) wire rods.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Referring to fig. 1 to 8, an embodiment of the invention discloses a system for uniformly spraying paint on an enameled wire based on gravity correction, which includes:

the device comprises slideways 1, a plurality of supporting rods and a plurality of supporting rods, wherein the slideways are vertically arranged and are oppositely arranged;

the paint spraying drying device comprises a paint spraying drying cylinder 21, wherein sliding blocks are rotatably arranged at two ends of the paint spraying drying cylinder under the driving of a rotating mechanism 22, the sliding blocks are slidably arranged along a sliding groove 11 formed in the inner side of a sliding way, paint spraying air holes 211 are formed in the outer surface of the paint spraying drying cylinder, the number of the paint spraying air holes is at least three, the at least three paint spraying air holes are uniformly distributed along the axis of the paint spraying drying cylinder, and the paint spraying air holes are arranged along the axis direction of the paint spraying drying cylinder;

the drying mechanism 8 is arranged in the paint spraying drying cylinder and used for heating the paint spraying drying cylinder;

each slide block is fixed with one wire fixing seat 3, and the wire fixing seats form fixing parts for fixing the end parts of wires 9;

the paint spraying mechanism 4 comprises a paint spraying pump 41 and a paint spraying head 43 which are connected through a paint spraying pipe 42, and the paint spraying head is fixed on the paint spraying drying cylinder and corresponds to the paint spraying air holes in position; and the number of the first and second groups,

the lifting mechanism 5 is arranged between the slide way and the slide block; and the number of the first and second groups,

Under the pulling action of the lifting mechanism, the sliding block is positioned at the upper end of the sliding way, the paint spraying drying cylinder which is rotatably installed in the sliding block is also positioned at the upper end of the sliding way, the rotating mechanism starts to drive the paint spraying drying cylinder, the paint spraying heads which are fixed on the paint spraying drying cylinder rotate together in a first rotating direction, the paint spraying heads can spray paint on the outer surfaces of wires which are positioned in the paint spraying drying cylinder (two ends of the wires are respectively fixed on one sliding block and are kept still in the paint spraying process) in the rotating process, the paint spraying heads can rotate for multiple circles, so that the thickness of each paint spraying is small enough, the paint spraying is more uniform, the paint spraying is finished (the paint spraying time of the paint spraying heads can be timed through a timer which is integrated in a controller, and the rotating time of the rotating mechanism can also be timed), and then the rotating mechanism drives the paint spraying drying cylinder and the spray nozzle to rotate in the reverse direction of the first rotating direction, so that the paint spraying pipes which are wound on the outer surface of the paint spraying drying cylinder are scattered when the paint spraying cylinder rotates in the first rotating direction, and the paint spraying air holes are opened.

The paint spraying drying cylinder is heated by the drying mechanism, air inside the paint spraying drying cylinder is heated, paint on the wire is dried under the dual action of the heating and air flow entering from the paint spraying air holes located below, the wire is kept in a free falling body in the drying process and is in a weightless state, the phenomenon that the thickness of the dried paint is uneven due to the fact that the liquid paint flows from the upper end to the lower end of the wire under the influence of gravity is avoided, the uniformity of the outer diameter of an enameled wire product is guaranteed, winding of the enameled wire in the later period is facilitated, paint crack in the winding process due to the fact that the local thickness is too large is avoided, the wire is exposed, the uniformity of the electrical performance of a winding made of the enameled wire is guaranteed, and the control of the electrical performance of the winding is facilitated.

Before the stoving section of thick bamboo that sprays paint whereabouts, slewing mechanism drive stoving section of thick bamboo and shower nozzle of spraying paint rotate with the opposite direction of first direction of rotation, so that the pipe of spraying paint of winding at the stoving section of thick bamboo outer surface of spraying paint is scattered when rotating with first direction of rotation, make the bleeder vent of spraying paint open, thereby make more air currents of whereabouts in-process can more smoothly follow the bleeder vent that sprays paint of below (at least three bleeder vent along circumference evenly distributed that sprays paint, at least one bleeder vent that sprays paint can be located its axis below get into, the air current of this entering further does benefit to the fast drying of paint.

It should be noted that the above-mentioned paint, i.e. wire enamel, is a coating material which provides a good insulation between the wires in the winding. The method is mainly used for bare copper wires, alloy wires and outer layers of glass fiber covered wires with various wire diameters so as to improve and stabilize the performance of the enameled wires. The insulating material is divided into the following parts according to the heat-resistant temperature grades of the insulating materials: y (90 ℃), A (105 ℃), E (120 ℃), B (130 ℃), F (155 ℃), H (180 ℃) and V (above 180 ℃), wherein the main varieties of the E-grade and B-grade enameled wires are acetal, polyurethane and polyester, and the main varieties of the F-grade and H-grade enameled wires are polyesterimide, polyamideimide, polyesteramideimide and the like. The thickness is generally 0.02 to 0.13mm depending on the wire diameter.

The drying process will be described by taking the example of drying the enameled wire with wire diameter of 1mm, paint (after drying) thickness of 70 μm and heat-resistant temperature grade of V, see experiment table 1

From the experimental parameters and the experimental data table, it is obvious that compared with the prior art, the paint dried by the drying process of the embodiment of the invention has smaller thickness deviation and more uniform thickness.

In addition, a specific mode of the drying mechanism is an electric heating wire, and the electric heating wire is fixed on the inner wall of the paint spraying drying cylinder.

It should also be noted that the wire holder can be clamped and fixed by using various wire clamps, and the specific structure thereof will not be further described.

In some embodiments, a telescopic driving mechanism 6 is further installed between the paint spraying head and the paint drying cylinder, and under the action of the telescopic driving mechanism, the paint spraying head is movably installed on the paint drying cylinder in a direction close to/far from the paint spraying vent. When spraying paint, the controller sends the operating instruction to flexible actuating mechanism, the drive spray head moves until inside moving to the direction that is close to the bleeder vent that sprays paint to it, make can spray paint that the head came out all spray the wire rod outside, then begin to spray paint, drive spray head outwards moves in the bleeder vent that sprays paint from spraying paint when spraying paint the end, withdraw from the bleeder vent that sprays paint, the high temperature that avoids stoving mechanism to produce influences the normal work of spray head, especially, avoid the high temperature and be heated the spray head and go out remaining paint drying back part, all block up the spray head, guarantee going on smoothly of the operation of spraying paint. In addition, this flexible actuating mechanism's a mode does, it includes mounting panel 61 and telescopic cylinder 62, the mounting panel is the arc mounting panel, and the inboard outside of pasting at the stoving section of thick bamboo that sprays paint, the shutoff is in the outside of a bleeder vent that sprays paint, telescopic cylinder's cylinder body is fixed in the mounting panel, set up the effect end that supplies telescopic cylinder on the mounting panel, the through-hole that the paint spraying head passes through, telescopic cylinder's effect end is fixed and is sprayed paint the head and penetrate the bleeder vent that sprays paint through this through-hole in, the flexible nozzle of stretching out and drawing back in going deep into the bleeder vent that sprays paint or from the bleeder vent that sprays paint through telescopic cylinder.

In addition, in order to further avoid that the paint spray head is partially or completely blocked after the paint remained at the paint outlet of the paint spray head is dried after the paint is heated due to overhigh temperature, the embodiment of the invention can also be used for manufacturing the paint spray drying cylinder by using a refractory material so as to block the heat in the paint spray drying cylinder from radiating outwards and prevent the paint spray head from being influenced by high temperature after the paint spray head is withdrawn.

In some embodiments, the slide block is rotatably provided with an anti-blowing baffle 7, the anti-blowing baffle is positioned outside the paint drying cylinder, and the anti-blowing baffle extends along an arc with the axis of the paint drying cylinder as a radius;

one side of the anti-blowing baffle, which is far away from the paint spraying drying cylinder, is provided with an arc-shaped flow guide part 71, and the flow guide part extends along the axial direction of the paint spraying drying cylinder;

The anti-blowing baffle is rotatably installed on the sliding block, under the action of the dead weight of the anti-blowing baffle, in the process of free falling of the paint spraying drying cylinder, the anti-blowing baffle is weightlessly in a vertical state, namely, the anti-blowing baffle is always positioned under the paint spraying drying cylinder, the rotating angle of the rotating mechanism is controlled, the paint spraying drying cylinder can be rotated to a position under a paint spraying air hole on the paint spraying drying cylinder, the paint spraying air hole under the paint spraying drying cylinder is shielded by the anti-blowing baffle, the air flow from the lower part of the paint spraying drying cylinder enters the paint spraying air hole under the paint spraying drying cylinder during free falling is avoided, and the paint which is not fully dried on the wire rod is blown upwards to cause uneven thickness of the paint.

In addition, other at least two paint spraying air holes except the paint spraying air hole positioned right below are not shielded by the anti-blowing baffle plate, an included angle is kept between the unshielded paint spraying air hole and the vertical direction, only a small amount of air can enter the unshielded paint spraying air hole, and a small amount of air can enter and exit the unshielded at least two paint spraying air holes in the drying process (the free falling motion process of the paint spraying drying cylinder).

The concrete scheme for realizing the above-mentioned 'a small amount of air flow can enter and exit the paint spraying air holes on the premise of not influencing the spraying direction of paint (from a paint spraying head)' the central angle corresponding to the paint spraying air holes is 2 degrees or below, so that 'only a small amount of air can enter the paint spraying air holes which are not shielded', meanwhile, in order to further avoid that the air flow entering the paint spraying air holes is too large to influence the random flow of the paint which is not dried, the diameter of a paint spraying drying cylinder can be increased, for example, the diameter of the wire rod is 25 times or more, so that the distance between the entering air flow and the wire rod is increased. On the premise that the central angle is 2 degrees and the diameter multiple is 25 times, because the paint thickness deviation is difficult to detect in the non-drying state, the inventor continues to perform the drying experiment to indirectly verify that the paint thickness is not influenced when the small amount of air flow enters and exits the paint spraying air holes, and the experimental results are shown in the following table

The drying process will be described by taking the example of drying the enameled wire with the wire diameter of 1mm, the paint (after drying) thickness of 70 μm and the heat-resistant temperature grade of V, referring to the experimental table 2

As can be seen from the experimental table, after the paint spraying vent is added, the drying time is shortened (from 2s to 1.5 s) compared with the case that the paint spraying vent is not provided, the free falling height of the wire rod is reduced (from 19.6m to 11 m), but the drying thickness deviation of the paint is slightly increased due to the influence of weak air flows entering from at least two other paint spraying vents which are not shielded by the anti-blowing baffle plates;

even after the paint-spraying air holes are added, the drying thickness deviation of the paint is still far smaller than that of the paint dried by the prior art.

In other embodiments, the side of the anti-blow-off shield facing the paint drying drum forms an avoidance recess 72 for the passage of the paint spray head and the paint spray tube (which wraps around the paint drying drum as the paint spray head moves). In addition, every paint spraying pipe of dodging in the recess all corresponds same paint spraying head, avoids the pipe of spraying paint of different paint spraying heads to twine each other and the intersection that causes for the stoving section of thick bamboo that sprays paint is when the antiport with first direction of rotation, and the pipe of spraying paint that is connected to same paint spraying head can be followed smoothly and is sprayed paint and dry and scatter on the section of thick bamboo.

In other embodiments, the two ends of the anti-blowing baffle extend outwards along the axial direction to form a limiting part 73 which is abutted with the slide way. Spacing portion is by idle in the slide for keep small clearance (as 0.1 mm) between spacing portion and the slide, avoided the drying cylinder of spraying paint free fall process axle prevent blow the baffle receive the air current effect of below rotate at will around its axis of rotation and the bleeder vent of spraying paint under that arouses can not be sheltered from by whole, thereby cause the air current that comes from the drying cylinder of spraying paint below when avoiding free fall to flow through the bleeder vent of spraying paint under this and get into and blow the paint of still not fully drying on the wire rod upwards and cause the thickness inequality of paint, the paint thickness on wire rod surface has further been guaranteed is even.

It should be noted that, a specific form of the rotating mechanism is that it includes a rotating motor 221, a rotation angle measuring unit, a driving gear 222 and a driven gear 223 which are connected in sequence in a transmission manner, wherein:

The rotating motor receives a control signal from the controller to rotate or stop, when the rotating motor rotates, the transmission path is the rotating motor → the driving gear → the driven gear, so as to drive the paint spraying drying cylinder fixed with the driven gear to rotate, the rotating angle of the rotating motor is detected by the rotating angle measuring unit, so that the angle (such as 360 degrees) which is prestored in the controller and needs to rotate for executing the whole paint spraying action is compared, when the rotating angle of the rotating motor reaches the needed rotating angle, the paint spraying is finished, the rotating motor reversely rotates (in the direction opposite to the first rotating direction), so that the paint spraying head and the paint spraying pipe are reset, and the next paint spraying action is executed after the drying is finished.

It should be further noted that, a specific manner of the lifting mechanism is that it includes a lifting motor 51, a lifting drum 52, a first rope pulley 53 and a second rope pulley 54 which are connected in sequence, wherein:

the lifting winding drum is rotatably arranged at the upper end of the slideway, a first cable 55 is wound on the lifting winding drum, and the free end of the first cable is fixed on the rotating shaft of the lifting motor;

the first sheave and the second sheave are rotatably mounted to the slide and arranged up and down, and the first sheave and the second sheave are wound around both ends of the second rope 56, respectively.

The lifting motor receives a control signal of the controller to rotate in two directions so as to realize the lifting of the second rope wheel and finally realize the lifting of the sliding block and the paint spraying drying cylinder, wherein the resetting action is carried out when the sliding block and the paint spraying drying cylinder ascend, and the drying operation is carried out when the sliding block and the paint spraying drying cylinder descend.

It should be further noted that the lifting mechanism further includes a height detection unit, the height detection unit is mounted on the slider and is configured to detect a lifting height of the slider, a signal output end of the height detection unit is in signal connection with the controller, and the controller is further configured to:

when the lifting height is more than or equal to H ₀ When, H ₀ 1/5 to 1/4 of the length of the slide way, and the rotating motor drives the slide wayThe first rope wheel has a linear velocity V _{Free falling body} Rotate so that the second sheave is completely released, V _{Free falling body} The speed of the free falling body of the spray painting drying cylinder from a high point is more than or equal to;

when the lifting height is<H ₀ When the first rope wheel is driven by the rotating motor to rotate at a speed reduction speed V, so that a force for pulling the second rope wheel upwards is provided, and the V is gradually reduced until the paint spraying drying drum descends to the bottom of the slideway.

Finally, a concrete mode of the painting mechanism is that it further includes a painting pipe winding drum 44 and a reset torsion spring (not shown in the figure), and adopts a widely used structure of a wire rewinding device, in which:

the paint spraying pipe winding cylinder is rotatably arranged on the slideway, and the paint spraying pipe is wound on the paint spraying pipe winding cylinder;

When a stoving section of thick bamboo that sprays paint descends, through a stoving section of thick bamboo that sprays paint, slewing mechanism, drying mechanism, the wire rod fixing base, under the effect of the self gravity of wire rod and slider, the pipe that sprays paint that is located between a stoving section of thick bamboo winding and the paint spraying head is elongated, the reset torsion spring is compressed, when a stoving section of thick bamboo that sprays paint ascends, the pipe that sprays paint that scatters is produced the grass on a stoving section of thick bamboo winding under the elastic restoring force effect of reset torsion spring, in order to accomplish accomodating to the pipe that sprays paint, and make the pipe that sprays paint can follow the lift of a stoving section of thick bamboo that sprays paint and keep.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, 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, article, or apparatus.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims

1. The utility model provides an even paint spraying system of enameled wire based on gravity is revised which characterized in that includes:

the paint spraying mechanism comprises a paint spraying pump and a paint spraying head which are connected through a paint spraying pipe, and the paint spraying head is fixed on the paint spraying drying cylinder and corresponds to the paint spraying air holes in position; and the number of the first and second groups,

the lifting mechanism is arranged between the slide way and the sliding block; and (c) a second step of,

2. The enamel wire uniform paint spraying system based on gravity correction as claimed in claim 1, wherein a telescopic driving mechanism is further installed between the paint spraying head and the paint spraying drying cylinder, and under the action of the telescopic driving mechanism, the paint spraying head is movably installed on the paint spraying drying cylinder in a direction approaching to/departing from the paint spraying vent.

3. The gravity correction-based enameled wire uniform paint spraying system according to claim 2, wherein an anti-blowing baffle is rotatably mounted on the slider, the anti-blowing baffle is located outside the paint drying cylinder, and the anti-blowing baffle extends along an arc with the axis of the paint drying cylinder as a radius;

4. The gravity correction-based enameled wire uniform paint spraying system according to claim 3, wherein an avoiding groove is formed on one side of the anti-blowing baffle plate facing the paint drying cylinder for the paint spraying head and the paint spraying pipe to pass through.

5. The enameled wire uniform paint spraying system based on gravity correction according to claim 4, wherein two ends of the anti-blowing baffle extend outwards in the axial direction to form a limiting part abutted against the slide way.

6. The enameled wire uniform paint spraying system based on gravity correction according to claim 5, wherein the rotating mechanism comprises a rotating motor, a rotation angle measuring unit, a driving gear and a driven gear which are sequentially connected in a transmission manner, wherein:

7. The enameled wire uniform paint spraying system based on gravity correction according to claim 6, wherein the lifting mechanism comprises a lifting motor, a lifting reel, a first rope pulley and a second rope pulley which are in sequential transmission connection, wherein:

8. The enamel wire uniform paint spraying system based on gravity correction according to claim 7, wherein the lifting mechanism further comprises a height detection unit, the height detection unit is mounted on the slider and is used for detecting the lifting height of the slider, a signal output end of the height detection unit is in signal connection with the controller, and the controller is further configured to:

when the lifting height is more than or equal to H ₀ When H is present ₀ Is 1/5 to 1/4 of the length of the slide way, and the rotating motor drives the first rope pulley to rotate at a linear speed V _{Free falling body} Rotate so that the second sheave is completely released, V _{Free falling body} The speed of the free falling body of the spray painting drying cylinder from a high point is more than or equal to;

9. The gravity correction-based enameled wire uniform paint spraying system according to claim 8, wherein the paint spraying mechanism further comprises a paint spraying pipe winding drum and a return torsion spring, wherein: