CN212524814U - Anticorrosive plastic-coated equipment for metal section - Google Patents

Abstract

The invention discloses an anticorrosion plastic dipping device for a metal section, which comprises a high-temperature box device, a PE powder box device, a low-temperature box device and a cooling device which are sequentially arranged, wherein the section enters the PE powder box device for PE powder spraying after being subjected to high-temperature treatment from the high-temperature box device, then enters the low-temperature box device for fusing PE powder on the surface of the section, and is finally cooled at the cooling device, so that the whole anticorrosion plastic dipping process is completed. The invention can improve the anti-corrosion effect of the surface of the section bar, thereby prolonging the service life of the section bar.

Description

Anticorrosive plastic-coated equipment for metal section

Technical Field

The invention relates to the technical field of anti-corrosion treatment of metal sections, in particular to anti-corrosion plastic dipping equipment for metal sections.

Background

The anti-corrosion treatment of the metal section is an important process for ensuring the service life of the metal section, the metal plastic-dipped metal is a novel technical treatment process mode for preventing corrosion of the metal surface, and the plastic-dipped technology is a new development of an anti-corrosion technology and is a new use of a high polymer material. Based on the technical scheme, the invention discloses an anti-corrosion plastic dipping device for metal sections, which introduces the anti-corrosion plastic dipping process of the metal sections in detail.

Disclosure of Invention

The invention aims to provide anti-corrosion plastic dipping equipment for metal sections, which solves the problem that the metal surface is corroded.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention relates to an anticorrosion plastic dipping device for a metal section, which comprises a high-temperature box device, a PE powder box device, a low-temperature box device and a cooling device which are sequentially arranged, wherein the section enters the PE powder box device for PE powder spraying after being subjected to high-temperature treatment from the high-temperature box device, then enters the low-temperature box device for fusing PE powder to the surface of the section, and is finally cooled at the cooling device, so that the whole anticorrosion plastic dipping process is completed.

Further, the high-temperature box device comprises a high-temperature box body, a first base and a second base are symmetrically arranged on the left side and the right side of the high-temperature box body, and the second base is positioned on the outer side of the first base; a support is arranged at the front and rear positions of the second base, a first rotating shaft is rotatably arranged on the support, a plurality of large gears are arranged at the middle position of the second base, the large gears are in key connection with the first rotating shaft, and the large gears are positioned between the front and rear supports; the bull gears which are symmetrically arranged left and right are connected together through a conveying chain, and the conveying chain penetrates through the high-temperature box body; a plurality of clamping plates are uniformly distributed on the conveying chain, and a section is arranged between every two adjacent clamping plates;

a first motor mounting seat is arranged between the first base and the second base, a first motor is mounted on the first motor mounting seat, and a driving gear is fixedly connected to one shaft end of the first motor; a driven gear is mounted on the first rotating shaft on the right side, and the driving gear and the driven gear are connected together through a transmission chain;

a protective support is arranged on the first base and is U-shaped, and the conveying chain is arranged in the U-shaped groove;

a plurality of heating devices are arranged in the high-temperature box body and are positioned above the conveying chains;

an inlet is formed in the side wall of the high-temperature box body, which is positioned on one side of the motor, and an outlet is formed in the other side of the high-temperature box body; and high-temperature-resistant cloth is arranged at the inlet and the outlet.

Further, the PE powder box device comprises a PE powder box body, a lower support is arranged on the periphery of the PE powder box body, an upper support is arranged at the upper end of the lower support, a first air cylinder is arranged at the center of the upper support, a moving frame is arranged at the working end of the first air cylinder, and the moving frame is located below the upper support; supporting plates are arranged on the upper front side and the lower rear side of the lower end face of the movable frame through connecting blocks and are positioned in the PE powder box body; the left end and the right end of the movable frame are respectively welded with a connecting piece-, the outer side of each connecting piece is rotatably provided with a roller wheel through a rotating shaft III-, and the roller wheels are abutted against the inner side wall of the lower support longitudinal rod;

a second rotating shaft is arranged in the middle of the supporting plate, a connecting bolt is arranged at the end head of the outer end of the second rotating shaft, a fastening nut is connected to the connecting bolt in a threaded manner, and the section bar is arranged on the connecting bolt through the fastening nut; one of the supporting plates comprises a hollow structure and a mounting plate inside, and the mounting plate is used for mounting the second rotating shaft; the other end of the rotating shaft II penetrates through the mounting plate and then is connected with a driven gear located at the hollow structure, the driven gear is connected with a driving gear through a synchronous chain, and the driving gear is connected with a motor II;

the bottom of the PE powder box body is provided with an air inlet, the air inlet is connected with a ventilating duct, and the other end of the ventilating duct is connected with a fan;

the inner side wall of the lower bracket longitudinal rod is provided with a track for the rolling of the roller;

the driving tooth, the driven tooth and the synchronous chain are all arranged in the hollow structure.

Furthermore, the low-temperature box device comprises a low-temperature box body, and a plurality of support legs are arranged at the lower end of the low-temperature box body; the left end and the right end of the low-temperature box body are both provided with a box door, the upper end of the box door is connected with a second air cylinder through a connecting plate, and the second air cylinder is positioned on the outer side of the supporting leg; a heat insulation layer is laid at the lower end of the interior of the low-temperature box body, and a plurality of heating pipes are uniformly distributed on the heat insulation layer; the front, rear, left and right side walls of the upper end of the low-temperature box body are symmetrically provided with supports, the end parts of the supports are provided with bearing blocks, bearings are arranged in the bearing blocks, the bearing blocks are sleeved on a fourth rotating shaft, and two ends of the fourth rotating shaft are respectively positioned on the supports symmetrically arranged front and rear; gears are symmetrically arranged at the four ends of the left rotating shaft and the right rotating shaft, and low-temperature box chains are meshed on the gears; the front end gear on the left rotating shaft IV is connected with the front end gear on the right rotating shaft IV through the low-temperature box chain; the rear end gear on the right rotating shaft IV is connected with the rear end gear on the right rotating shaft IV through the low-temperature box chain; the two low-temperature box chains penetrate through the low-temperature box body and are connected together through a plurality of moving rods which are uniformly arranged; a plurality of hooks are distributed on the movable rod, and a section bar is hung below the hooks; the shaft end of one of the rotating shafts is connected with a synchronizing device after being transmitted out of the bracket, and the other end of the synchronizing device is connected with a motor III;

the second air cylinder is fixed on the ground through a second air cylinder mounting seat;

the heat-insulating layer specifically comprises aluminum silicate cotton cloth positioned on the upper layer and rock wool positioned on the lower layer;

one side of the bearing seat is provided with a tensioning device;

the lower end of the support is provided with a support plate, and the support plate is connected with the front support and the rear support.

Furthermore, the cooling device comprises a frame formed by a plurality of longitudinal support rods and a plurality of transverse support rods, and the transverse support rods are positioned at the upper parts of the longitudinal support rods; a motor IV is arranged on the transverse supporting rod and is connected with a rotating shaft V through a chain; two ends of the rotating shaft five are arranged below the transverse supporting rod through a rotating shaft five mounting seat; the two ends of the rotating shaft five, which penetrate through the longitudinal support rod, are respectively provided with a conveying device, a plurality of hanging rods are uniformly distributed on the conveying device, and the hanging rods are hung with profiles through hooks;

the conveying device comprises a gear structure fixedly connected with the rotating shaft five and a chain structure meshed with the gear structure; the hanging rods are uniformly distributed on the chain structure and run together with the chain structure.

Compared with the prior art, the invention has the beneficial technical effects that:

according to the anticorrosive plastic-dipping equipment for the metal section, the section is firstly placed into a high-temperature box for high-temperature treatment, then is taken out and is placed into a PE powder box for powder spraying, after the spraying is finished, the section is placed into a low-temperature box, the powder and the section are fully fused, the adhesive force of the powder on the surface of the section is improved, and finally the section in the low-temperature box is conveyed to a cooling device for cooling, so that the long-term fusion state of the powder on the surface of the section is ensured. In a word, the invention can improve the anticorrosion effect of the surface of the section bar, and further prolong the service life of the section bar.

Drawings

The invention is further illustrated in the following description with reference to the drawings.

FIG. 1 is a schematic structural view of an anticorrosive plastic-impregnated equipment for metal section bars according to the present invention;

FIG. 2 is a front view of the hot box assembly;

FIG. 3 is an enlarged view of a portion of the hot box assembly;

FIG. 4 is a cross-sectional view of a high temperature box assembly;

FIG. 5 is a top view of the hot box assembly;

FIG. 6 is a front view of the PE powder box device;

FIG. 7 is a sectional view of the PE powder box device;

FIG. 8 is a side view of the PE powder box apparatus;

FIG. 9 is a schematic view of the internal structure of the support plate;

FIG. 10 is a top view of the profile installation;

FIG. 11 is an enlarged view of A;

FIG. 12 is a top view of A;

FIG. 13 is a front view of the cryostat assembly;

FIG. 14 is a view showing a state in which the cryobox apparatus closes the door;

FIG. 15 is a side view of the cryostat assembly;

FIG. 16 is an enlarged view of a portion of the cryostat assembly;

FIG. 17 is a gear structure view of the cryobox apparatus;

FIG. 18 is a schematic view of a hook structure;

FIG. 19 is a front view of the cooling device;

FIG. 20 is a side view of the cooling device;

FIG. 21 is an enlarged view of a portion of the cooling device;

description of reference numerals: 1. a high temperature box device; 2. a PE powder box device; 3. a cryostat device; 4. a cooling device;

1-1, a high-temperature box body; 1-2, a first base; 1-3, a motor mounting seat; 1-4 and a second base; 1-5, a driving gear; 1-6, a first rotating shaft; 1-7, a bull gear; 1-8, a protective bracket; 1-9, a clamping plate; 1-10, section bar; 1-11, conveying chains; 1-12, a support; 1-13, a transmission chain; 1-14, a first motor; 1-15, driven gear; 1-1-1, a heating device; 1-1-2, inlet; 1-1-3, an outlet;

2-1, a lower bracket; 2-2, a PE powder box body; 2-3, a support plate; 2-4, connecting blocks; 2-5, a movable frame; 2-6, a first air cylinder; 2-7, an upper bracket; 2-8, ventilating duct; 2-9, a fan; 2-10 parts of air inlet; 2-11 and a second motor; 2-12, driving teeth; 2-13, driven teeth; 2-14, synchronous chains; 2-15, a second rotating shaft; 2-16, connecting bolts; 2-17, fastening a nut; 2-1-1, track; 2-3-1, mounting a plate; 2-3-2, hollow structure; 2-5-1, connecting pieces; 2-5-2, rollers; 2-5-3, a third rotating shaft;

3-1, a low-temperature box body; 3-2, supporting legs; 3-3, a box door; 3-4, cylinder two; 3-5, mounting seats of a second cylinder; 3-6, a bracket; 3-7, supporting the plate; 3-8, bearing seats; 3-9, a tensioning device; 3-10, motor III; 3-11, heat preservation and insulation layer; 3-12, heating pipe; 3-13, a synchronization device; 3-14, rotating shaft four; 3-15, a low-temperature box chain; 3-16, a movable rod; 3-17, hanging hooks; 3-18, gears;

4-1, longitudinal support bars; 4-2, transverse supporting rods; 4-3, a fifth rotating shaft mounting seat; 4-4, motor four; 4-5, a chain; 4-6, rotating shaft five; 4-7, hanging a rod; 4-8, and a transmission device.

Detailed Description

As shown in fig. 1, the anticorrosion plastic dipping equipment for metal sections comprises a high-temperature box device 1, a PE powder box device 2, a low-temperature box device 3 and a cooling device 4 which are sequentially arranged, wherein the sections 1-10 enter the PE powder box device 2 for PE powder spraying after being subjected to high-temperature treatment from the high-temperature box device 1, then enter the low-temperature box device 3 for fusing PE powder on the surfaces of the sections 1-10, and finally are cooled at the cooling device 4, so that the whole anticorrosion plastic dipping process is completed.

As shown in fig. 2-5, the high temperature box device 1 includes a high temperature box body 1-1, a plurality of heating devices 1-1-1 are installed in the high temperature box body 1-1, and the heating devices 1-1-1 are located above the transport chains 1-11 to heat the profiles on the transport chains 1-11. The side wall of the high-temperature box body 1-1, which is positioned at one side of the motor I1-14, is provided with an inlet 1-1-2, and the other side is provided with an outlet 1-1-3; the inlet 1-1-2 and the outlet 1-1-3 are both dark yellow and provided with high temperature prevention cloth, the high temperature prevention cloth is specifically ceramic fiber cloth, and the ceramic fiber cloth not only has the effects of fire prevention and heat insulation, but also has the sealing function.

The left side and the right side of the high-temperature box body 1-1 are symmetrically provided with a first base 1-2 and a second base 1-4, the second base 1-4 is located on the outer side of the first base 1-2, and a certain gap is formed between the first base 1-2 and the second base 1-4. A plurality of supporting seats 1-12 are arranged at the front and back positions of the base II 1-4, and a rotating shaft I1-6 is rotatably arranged on the plurality of supporting seats 1-12 through a bearing.

A plurality of gear wheels 1-7 are installed in the middle of the second base 1-4, the gear wheels 1-7 are connected to the first rotating shaft 1-6 in a key mode, and the gear wheels 1-7 are located in the front and at the back of the first rotating shaft and between the supports 1-12. The bull gears 1-7 are symmetrically arranged on the left and right sides of the high-temperature box body 1-1 and are connected together through the conveying chains 1-11, and the conveying chains 1-11 penetrate through the high-temperature box body 1-1. The conveying chains 1-11 are uniformly provided with a plurality of clamping plates 1-9, and the section bars 1-10 are placed between every two adjacent clamping plates 1-9, so that the section bars 1-10 are stably conveyed.

A first motor mounting seat 1-3 is arranged between the first base 1-2 and the second base 1-4, a first motor 1-14 is arranged on the first motor mounting seat 1-3, the first motor 1-14 is connected with a PLC control device, and the PLC control device controls the on-off state of the first motor 1-14. The driving gear 1-5 is fixedly connected to the shaft end of the first motor 1-14, the driven gear 1-15 is mounted on the rotating shaft 1-6 on the right side, and the driving gear 1-5 and the driven gear 1-15 are connected together through a transmission chain 1-13.

The protective support 1-8 is installed on the first base 1-2, the protective support 1-8 is U-shaped, and the conveying chain 1-11 is arranged in the U-shaped groove and used for protecting the conveying chain 1-11.

As shown in fig. 6 to 12, the PE powder box device 2 includes a PE powder box body 2-2, a lower support 2-1 is installed around the PE powder box body 2-2, an upper support 2-7 is installed at the upper end of the lower support 2-1, and the upper support 2-7 and the lower support 2-1 both include a plurality of cross bars and vertical bars, which are installed together. And an inclined rod used for enhancing the connection stability is also arranged between the cross rod and the vertical rod on the upper supports 2-7.

The center of the upper support 2-7 is provided with a first air cylinder 2-6, the working end of the first air cylinder 2-6 is provided with a movable frame 2-5, the movable frame 2-5 is positioned below the upper support 2-7, and the first air cylinder 2-6 is started to realize the up-and-down movement of the movable frame 2-5.

Supporting plates 2-3 are mounted on the upper front side and the lower rear side of the lower end face of the movable frame 2-5 through connecting blocks 2-4, and the supporting plates 2-3 are located in the PE powder box body 2-2. A second rotating shaft 2-15 is installed in the middle of the supporting plate 2-3, the end head of the outer end of the second rotating shaft 2-15 is fixedly connected with a connecting bolt 2-16, and a fastening nut 2-17 is connected to the connecting bolt 2-16 in a threaded mode. The section bars 1-10 are arranged on the connecting bolts 2-16 through the fastening nuts 2-17 and rotate along with the rotation of the rotating shafts 2-15. One of the supporting plates 2-3 internally comprises a hollow structure 2-3-2 and a mounting plate 2-3-1, the hollow structure 2-3-2 is positioned at the outer side of the mounting plate 2-3-1, and the two are mounted together. The mounting plate 2-3-1 is used for mounting the second rotating shaft 2-15, the other end of the second rotating shaft 2-15 penetrates through the mounting plate 2-3-1 and then is connected with a driven gear 2-13 located at the position of the hollow structure 2-3-2, the driven gear 2-13 is connected with a driving gear 2-12 through a synchronous chain 2-14, and the driving gear 2-12 is connected with a second motor 2-11. The driving teeth 2-12, the driven teeth 2-13 and the synchronous chains 2-14 are all located in the hollow structures 2-3-2, the motors 2-11 are located on one sides, far away from the hollow structures 2-3-2, of the mounting plates 2-3-1 and are fixedly mounted on the mounting plates through mounting seats, shaft ends of the motors 2-11 penetrate through the mounting plates 2-3-1 and then are connected with the driving teeth 2-12 in a key mode to drive the driving teeth 2-12 to rotate, and rotation of the rotating shafts 2-15 is achieved through the action of the synchronous chains 2-14 and the driven teeth 2-13. If the section bar 1-10 is long, both ends of the section bar are arranged on the second rotating shaft 2-15 on the support plate 2-3, so that synchronous rotation is realized; if the section bar 1-10 is shorter, the section bar is only arranged on the supporting plate 2-3 at one side of the motor II 2-11.

The left end and the right end of the movable frame 2-5 are respectively welded with a connecting piece 2-5-1, the outer side of the connecting piece 2-5-1 is rotatably provided with a roller 2-5-2 through a rotating shaft three 2-5-3, and the roller 2-5-2 is abutted to the inner side wall of the longitudinal rod of the lower support 2-1. The inner side wall of the longitudinal rod of the lower bracket 2-1 is provided with a track 2-1-1 for the roller 2-5-2 to roll, and the moving direction of the roller 2-5-2 is limited. The connecting piece 2-5-1 is of a U-shaped structure, and the roller 2-5-2 is located in the U-shaped groove.

The bottom of the PE powder box body 2-2 is provided with an air inlet 2-10, the air inlet 2-10 is connected with a ventilating duct 2-8, the other end of the ventilating duct 2-8 is connected with a fan 2-9, and the wind power is selected according to actual conditions to ensure that the PE powder is boiled.

PE powder is placed in the PE powder box body 2-2, and a box body cover is installed at the upper end of the PE powder box body 2-2, so that the PE powder is prevented from splashing under the action of wind.

When in operation, firstly, the section bars 1-10 are arranged on the connecting bolts 2-16 through the fastening nuts 2-17; then, starting the first cylinder 2-6, driving the support plate 2-3 to move downwards by the moving frame 2-5, enabling the support plate 2-3 to enter the PE powder box body 2-2, and covering the box body cover; then, starting a fan 2-9 to boil the PE powder in the PE powder box body 2-2, starting a motor 2-11 to enable a rotating shaft 2-15 to drive the section bar 2-16 to rotate, and spraying the boiled PE powder on the section bar 1-10; and finally, closing the fan 2-9 and the motor 2-11, opening the box cover, starting the cylinder 2-6, enabling the moving frame 2-5 to drive the support plate 2-3 to move upwards, and finally taking out the sprayed section bar 1-10.

As shown in fig. 13-18, the cryostat apparatus 3 includes a cryostat body 3-1, and a plurality of legs 3-2 are mounted at the lower end of the cryostat body 3-1. The left end and the right end of the low-temperature box body 3-1 are respectively provided with a box door 3-3, and a guide rail and a slide block are arranged between the box door 3-3 and the side wall of the low-temperature box body 3-1, so that the box door 3-3 can move up and down conveniently, and the sealing performance of the closing of the box door 3-3 is improved (the structure is the prior art and is not shown in the figure). The upper end of the box door 3-3 is connected with a second air cylinder 3-4 through a connecting plate. The second cylinder 3-4 is positioned on the outer side of the supporting leg 3-2 and is fixed on the ground through a second cylinder mounting seat 3-5. And starting the second cylinder 3-4, driving the connecting plate to move upwards by the working end, and driving the box door 3-3 to move upwards to close the box door 3-3.

And a heat-insulating layer 3-11 is laid at the lower end of the interior of the low-temperature box body 3-1, and the heat-insulating layer 3-11 specifically comprises aluminum silicate cotton cloth positioned at the upper layer and rock wool positioned at the lower layer. A plurality of heating pipes 3-12 are uniformly distributed on the heat insulation layer 3-11, and the heating pipes 3-12 are electrified to increase the temperature in the low-temperature box body 3-1 and heat the workpiece in the low-temperature box body 3-1.

The front, rear, left and right side walls of the upper end of the low-temperature box body 3-1 are symmetrically provided with brackets 3-6, the lower ends of the brackets 3-6 are provided with supporting plates 3-7, and the supporting plates 3-7 are connected with the front and rear brackets 3-6. Bearing blocks 3-8 are installed at the end portions of the supports 3-6, bearings are installed inside the bearing blocks 3-8, and tensioning devices 3-9 are installed on one sides of the bearing blocks 3-8. The bearing is sleeved on the rotating shaft IV 3-14, and two ends of the rotating shaft IV 3-14 are respectively positioned on the supports 3-6 which are symmetrically arranged front and back.

Gears 3-18 are symmetrically arranged at two ends of the left rotating shaft and the right rotating shaft 3-14, and low-temperature box chains 3-15 are meshed on the gears 3-18. The front end gear 3-18 on the left rotating shaft four 3-14 is connected with the front end gear 3-18 on the right rotating shaft four 3-14 through the low temperature box chain 3-15; the rear end gears 3-18 on the right rotating shafts four 3-14 are connected with the rear end gears 3-18 on the right rotating shafts four 3-14 through the low temperature box chains 3-15. The two low-temperature box chains 3-15 penetrate through the low-temperature box body 3-1, and the low-temperature box chains 3-15 are connected together through a plurality of moving rods 3-16 which are uniformly arranged. A plurality of hooks 3-17 are distributed on the movable rod 3-16, and a section bar 1-10 is hung below the hooks 3-17. The shaft end of one of the rotating shafts four 3-14 is transmitted out of the support 3-6 and then is connected with a synchronizing device 3-13, the other end of the synchronizing device 3-13 is connected with a motor three 3-10, and the synchronizing device 3-13 comprises a synchronizing wheel which is in key connection with the rotating shaft four 3-14 and the output end of the motor three 3-10, and a synchronous belt which connects the synchronizing wheel together.

The hooks 3-17 comprise upper hooks used for being hung on the moving rods 3-16 and lower hooks used for hanging the section bars 1-10, and through holes for the lower hooks to penetrate through are formed in the section bars 1-10.

In the operation process, firstly, hanging the section bars 1-10 on the movable rods 3-16 through the hooks 3-17; then, starting a motor III 3-10, under the action of a synchronizer 3-13, starting a rotating shaft IV 3-14 to rotate, driving a low-temperature box chain 3-15 to move into a low-temperature box body 3-1 through a gear 3-19, and after reaching a specified position, closing the motor III 3-14; and finally, starting a second cylinder 3-4, closing the box doors 3-3 at two sides of the low-temperature box body 3-1 to form a closed space for the low-temperature box body 3-1 to heat the section bar 1-10 at a low temperature.

As shown in fig. 19-21, the cooling device 4 comprises a frame formed by a plurality of longitudinal support bars 4-1 and a plurality of transverse support bars 4-2, and the transverse support bars 4-2 are located at the upper parts of the longitudinal support bars 4-1. A motor IV 4-4 is arranged on the transverse supporting rod 4-2, and the motor IV 4-4 is connected with a rotating shaft V4-6 through a chain 4-5. Two ends of the rotating shaft five 4-6 are arranged below the transverse supporting rod 4-2 through a rotating shaft five mounting seat 4-3. The rotating shaft five 4-6 penetrates through the longitudinal support rod 4-1, the two ends of the rotating shaft five 4-6 are respectively provided with a conveying device 4-8, a plurality of hanging rods 4-7 are uniformly distributed on the conveying device 4-8, the hanging rods 4-7 are provided with section bars 1-10 in a hanging mode through hooks 3-17, and the section bars are cooled through self-hot air.

The transportation device 4-8 includes a gear structure fixedly connected to the rotating shaft 4-6, and a chain structure engaged with the gear structure, which is prior art and will not be described herein in detail. The hanging rods 4-7 are uniformly distributed on the chain structure and run together with the chain structure.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims (5)

1. The utility model provides a corrosion-resistant equipment of moulding that soaks of metal section which characterized in that: the anti-corrosion plastic coating process comprises a high-temperature box device (1), a PE powder box device (2), a low-temperature box device (3) and a cooling device (4) which are sequentially arranged, wherein sectional materials (1-10) are subjected to high-temperature treatment in the high-temperature box device (1) and then enter the PE powder box device (2) for PE powder spraying, and then enter the low-temperature box device (3) for fusing PE powder to the surfaces of the sectional materials (1-10), and finally the sectional materials are cooled in the cooling device (4), so that the whole anti-corrosion plastic coating process is completed.

2. The anti-corrosion plastic-dipping equipment for the metal section bar according to claim 1, which is characterized in that: the high-temperature box device (1) comprises a high-temperature box body (1-1), wherein a first base (1-2) and a second base (1-4) are symmetrically arranged on the left side and the right side of the high-temperature box body (1-1), and the second base (1-4) is positioned on the outer side of the first base (1-2); supports (1-12) are arranged at the front and rear positions of the second base (1-4), a first rotating shaft (1-6) is rotatably arranged on the supports (1-12), a plurality of large gears (1-7) are arranged at the middle positions of the second base (1-4), the large gears (1-7) are connected to the first rotating shaft (1-6) in a key mode, and the large gears (1-7) are located between the front support (1) and the rear support (12); the bull gears (1-7) are symmetrically arranged on the left and right sides and are connected together through conveying chains (1-11), and the conveying chains (1-11) penetrate through the high-temperature box body (1-1); a plurality of clamping plates (1-9) are uniformly distributed on the conveying chains (1-11), and sections (1-10) are placed between every two adjacent clamping plates (1-9);

a first motor mounting seat (1-3) is arranged between the first base (1-2) and the second base (1-4), a first motor (1-14) is mounted on the first motor mounting seat (1-3), and a driving gear (1-5) is fixedly connected to the shaft end of the first motor (1-14); driven gears (1-15) are mounted on the first rotating shaft (1-6) on the right side, and the driving gears (1-5) are connected with the driven gears (1-15) through transmission chains (1-13);

a protective support (1-8) is arranged on the first base (1-2), the protective support (1-8) is U-shaped, and the conveying chain (1-11) is arranged in the U-shaped groove;

a plurality of heating devices (1-1-1) are arranged in the high-temperature box body (1-1), and the heating devices (1-1-1) are positioned above the conveying chains (1-11);

the side wall of the high-temperature box body (1-1) positioned at one side of the motor I (1-14) is provided with an inlet (1-1-2), and the other side is provided with an outlet (1-1-3); the inlet (1-1-2) and the outlet (1-1-3) are both provided with high temperature prevention cloth.

3. The anti-corrosion plastic-dipping equipment for the metal section bar according to claim 1, which is characterized in that: the PE powder box device (2) comprises a PE powder box body (2-2), a lower support (2-1) is arranged on the periphery of the PE powder box body (2-2), an upper support (2-7) is arranged at the upper end of the lower support (2-1), a first air cylinder (2-6) is arranged at the central position of the upper support (2-7), a moving frame (2-5) is arranged at the working end of the first air cylinder (2-6), and the moving frame (2-5) is located below the upper support (2-7); supporting plates (2-3) are arranged on the upper front side and the lower rear side of the lower end face of the movable frame (2-5) through connecting blocks (2-4), and the supporting plates (2-3) are positioned in the PE powder box body (2-2); connecting pieces (2-5-1) are welded at the left end and the right end of the moving frame (2-5), rollers (2-5-2) are rotatably arranged on the outer sides of the connecting pieces (2-5-1) through rotating shafts III (2-5-3), and the rollers (2-5-2) abut against the inner side wall of the longitudinal rod of the lower support (2-1);

a second rotating shaft (2-15) is arranged in the middle of the supporting plate (2-3), a connecting bolt (2-16) is arranged at the end head of the outer end of the second rotating shaft (2-15), a fastening nut (2-17) is connected to the connecting bolt (2-16) in a threaded mode, and a section bar (1-10) is arranged on the connecting bolt (2-16) through the fastening nut (2-17); one of the supporting plates (2-3) comprises a hollow structure (2-3-2) and a mounting plate (2-3-1) inside, and the mounting plate (2-3-1) is used for mounting the second rotating shaft (2-15); the other end of the second rotating shaft (2-15) penetrates through the mounting plate (2-3-1) and then is connected with a driven gear (2-13) located at the hollow structure (2-3-2), the driven gear (2-13) is connected with a driving gear (2-12) through a synchronous chain (2-14), and the driving gear (2-12) is connected with a second motor (2-11);

the bottom of the PE powder box body (2-2) is provided with an air inlet (2-10), the air inlet (2-10) is connected with a ventilating duct (2-8), and the other end of the ventilating duct (2-8) is connected with a fan (2-9);

a track (2-1-1) for the rollers (2-5-2) to roll is arranged on the inner side wall of the longitudinal rod of the lower bracket (2-1);

the driving teeth (2-12), the driven teeth (2-13) and the synchronous chains (2-14) are all arranged in the hollow structures (2-3-2).

4. The anti-corrosion plastic-dipping equipment for the metal section bar according to claim 1, which is characterized in that: the low-temperature box device (3) comprises a low-temperature box body (3-1), and a plurality of support legs (3-2) are arranged at the lower end of the low-temperature box body (3-1); the left end and the right end of the low-temperature box body (3-1) are respectively provided with a box door (3-3), the upper end of the box door (3-3) is connected with a second air cylinder (3-4) through a connecting plate, and the second air cylinder (3-4) is positioned on the outer side of the supporting leg (3-2); a heat insulation layer (3-11) is laid at the lower end of the interior of the low-temperature box body (3-1), and a plurality of heating pipes (3-12) are uniformly distributed on the heat insulation layer (3-11); the front, rear, left and right side walls of the upper end of the low-temperature box body (3-1) are symmetrically provided with supports (3-6), the end parts of the supports (3-6) are provided with bearing seats (3-8), bearings are arranged in the bearing seats (3-8), the bearings are sleeved on a rotating shaft four (3-14), and two ends of the rotating shaft four (3-14) are respectively positioned on the supports (3-6) which are symmetrically arranged front and rear; gears (3-18) are symmetrically arranged at two ends of the left rotating shaft and the right rotating shaft (3-14), and low-temperature box chains (3-15) are meshed on the gears (3-18); the front end gear (3-18) on the left rotating shaft four (3-14) is connected with the front end gear (3-18) on the right rotating shaft four (3-14) through the low-temperature box chain (3-15); the rear end gear (3-18) on the right rotating shaft four (3-14) is connected with the rear end gear (3-18) on the right rotating shaft four (3-14) through the low-temperature box chain (3-15); the two low-temperature box chains (3-15) penetrate through the low-temperature box body (3-1), and the low-temperature box chains (3-15) are connected together through a plurality of moving rods (3-16) which are uniformly arranged; a plurality of hooks (3-17) are distributed on the movable rod (3-16), and a section bar (1-10) is hung below the hooks (3-17); the shaft end of one of the rotating shafts (3-14) is transmitted out of the bracket (3-6) and then is connected with a synchronizing device (3-13), and the other end of the synchronizing device (3-13) is connected with a motor (3-10);

the second air cylinder (3-4) is fixed on the ground through a second air cylinder mounting seat (3-5);

the heat-insulating layer (3-11) specifically comprises aluminum silicate cotton cloth positioned on the upper layer and rock wool positioned on the lower layer;

one side of the bearing seat (3-8) is provided with a tensioning device (3-9);

the lower ends of the brackets (3-6) are provided with supporting plates (3-7), and the supporting plates (3-7) are connected with the front and the rear brackets (3-6).

5. The anti-corrosion plastic-dipping equipment for the metal section bar according to claim 1, which is characterized in that: the cooling device (4) comprises a frame consisting of a plurality of longitudinal supporting rods (4-1) and a plurality of transverse supporting rods (4-2), and the transverse supporting rods (4-2) are positioned at the upper parts of the longitudinal supporting rods (4-1); a motor IV (4-4) is arranged on the transverse supporting rod (4-2), and the motor IV (4-4) is connected with a rotating shaft V (4-6) through a chain (4-5); two ends of the rotating shaft five (4-6) are arranged below the transverse supporting rod (4-2) through a rotating shaft five mounting seat (4-3); the rotating shaft five (4-6) penetrates through the longitudinal support rod (4-1), two ends of the rotating shaft five (4-6) are respectively provided with a conveying device (4-8), a plurality of hanging rods (4-7) are uniformly distributed on the conveying device (4-8), and the hanging rods (4-7) are provided with section bars (1-10) in a hanging manner through hooks (3-17);

the conveying device (4-8) comprises a gear structure fixedly connected with the rotating shaft five (4-6) and a chain structure meshed with the gear structure; the hanging rods (4-7) are uniformly distributed on the chain structure and run together with the chain structure.

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