A length-adaptive steel pipe coating device

Abstract

This invention discloses a length-adaptive steel pipe coating device, comprising a frame, and further comprising: an X-axis displacement mechanism, wherein two sets of the X-axis displacement mechanism are symmetrically installed on both sides of the frame; a Y-axis displacement mechanism, wherein the Y-axis displacement mechanism is installed between the two sets of X-axis displacement mechanisms; a Z-axis displacement mechanism, wherein two sets of the Z-axis displacement mechanism are symmetrically installed at the front and rear ends on one side of the Z-axis displacement mechanism; a coating mechanism, wherein the coating mechanism is installed below the Z-axis displacement mechanism; and a support mechanism, wherein the support mechanism is slidably mounted in a ground rail via a support plate; the support mechanism includes a drive head, a driven head, and support rollers respectively installed on the drive head and the driven head. This invention can adjust the spacing between the support rollers to a suitable length, thereby adapting to steel pipes of different lengths, ensuring that the steel pipe is stably and uniformly supported during the coating process, thus avoiding coating quality problems caused by length mismatch.

Description

Technical Field

[0001] This invention belongs to the field of steel pipe coating technology. Specifically, this invention relates to a length-adaptive steel pipe coating device. Background Technology

[0002] Coated steel pipe is a composite pipe that uses steel pipe as the base pipe and plastic powder (such as epoxy resin) as the coating material. A plastic layer is coated on its inner surface and a plastic layer or other anti-corrosion material is coated on its outer surface. It is also called plastic-coated steel pipe.

[0003] When applying a negative buoyancy coating to the outer surface of steel pipes, the pipes need to be placed on a coating vehicle. Since the length error of the steel pipes cannot be adapted to the fixed distance of the support wheels when they are of fixed length, the steel pipes generally need to be graded according to length, and the fixed distance of the support wheels is preset according to the grade difference to complete the coating operation in batches. Due to this limitation, the work of sorting, classifying and batching steel pipes online consumes a lot of manpower and resources, which increases the cost of coating operations. Summary of the Invention

[0004] This invention provides a length-adaptive steel pipe coating device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a length-adaptive steel pipe coating device, comprising a frame, and further comprising:

[0006] The X-axis displacement mechanism is provided in two sets and is symmetrically installed on both sides of the frame.

[0007] The Y-axis displacement mechanism is installed between two sets of X-axis displacement mechanisms;

[0008] The Z-axis displacement mechanism is provided in two sets, which are symmetrically installed at the front and rear ends of one side of the Z-axis displacement mechanism.

[0009] A coating mechanism is installed below the Z-axis displacement mechanism;

[0010] A support mechanism, which is slidably mounted within a ground rail via a support plate;

[0011] The load-bearing mechanism includes a drive head, a passive head, support rollers respectively mounted on the drive head and the passive head, and a length adjustment assembly mounted between the drive head and the passive head.

[0012] Preferably, the length adjustment assembly includes two sets of booms connected to the drive vehicle head, two sets of slender booms disposed inside the booms and connected to the passive vehicle head, a servo drive motor assembly mounted on the booms, a coaxial connector connected to the output end of the servo drive motor assembly, and two sets of drive gears mounted on the coaxial connector.

[0013] Preferably, the length adjustment assembly further includes two sets of locking cylinders respectively mounted on the boom, a linkage mechanism connected to the output end of the locking cylinders, and a locking gear mounted on the linkage mechanism;

[0014] The forearm is provided with guide members at even intervals and a rack located below the forearm.

[0015] Preferably, the X-axis displacement mechanism includes two sets of X-axis fixing plates mounted on the frame, a transverse screw mounted between the two sets of X-axis fixing plates, an X-axis drive motor connected to the transverse screw, and an X-axis slide rail disposed between the two sets of X-axis fixing plates.

[0016] Preferably, the Y-axis displacement mechanism includes a support frame slidably connected to the X-axis slide rail, a Y-axis slide rail mounted on one side of the support frame, two sets of Y-axis fixing plates mounted on the support frame, a longitudinal screw mounted between the two sets of Y-axis fixing plates, and a Y-axis drive motor connected to the longitudinal screw.

[0017] Preferably, the Z-axis displacement mechanism includes a support base slidably connected to the Y-axis slide rail, an electric guide rail mounted on the support base, and a lifting plate mounted on the electric guide rail.

[0018] Preferably, the coating mechanism includes a drive assembly installed below the lifting plate, a coating assembly installed below the drive assembly, and a feeding assembly adapted to the coating assembly.

[0019] Preferably, the drive assembly includes a lifting cylinder, a transition plate connected to the lifting rod of the lifting cylinder, and a telescopic rod slidably disposed on the transition plate, the top end of the telescopic rod being slidably connected to the frame.

[0020] Preferably, the coating assembly includes a mounting plate fixedly connected to the adapter plate, an extended telescopic cylinder fixedly connected to the mounting plate, an extended rod connected to the output rod of the extended telescopic cylinder, a sleeve shaft sleeved on the extended rod and rotatably connected to the extended rod, and a coating roller sleeved on the sleeve shaft.

[0021] Preferably, the feeding assembly includes a hopper disposed above the extended telescopic cylinder, an airbag fixedly mounted on the extended rod via a connecting rod, a U-shaped rod connected to one end of the extended rod, a feeding component installed between the airbag and the U-shaped rod, and a cam fixedly connected to the sleeve shaft.

[0022] The airbags are connected to the hopper and the feeding device via air pipes, and a drip outlet is provided below the feeding device.

[0023] The beneficial effects of adopting the above technical solutions are:

[0024] I. This invention, through a bearing mechanism, can receive preloaded steel pipe length information online. The servo-driven length adjustment mechanism can adjust the support roller spacing to a suitable length, thereby adapting to steel pipes of different lengths. This ensures that the steel pipe can be stably and uniformly supported during the coating process, thus avoiding coating quality problems caused by length mismatch.

[0025] Second, the present invention uses a coating component to coat the inside and outside of steel pipes, reducing the need for conventional steel pipe coating equipment. It can also coat the inside and outside of steel pipes simultaneously without changing the site, which not only saves time and labor costs for equipment replacement, but also significantly shortens the production cycle. Furthermore, the coating component provides a more uniform coating to the steel pipe.

[0026] Third, this invention drives the feeding component to complete the feeding work through the coating process, that is, feeding the coating roller at the same time as coating, thereby achieving automation without the need for additional power. The two components are precisely structured and work together more perfectly, which not only avoids the leakage and waste that may occur in traditional feeding methods, but also ensures the stability and consistency of coating quality. Attached Figure Description

[0027] Figure 1 This is an assembly drawing provided by the present invention;

[0028] Figure 2 This is an assembly drawing provided by the present invention from another perspective;

[0029] Figure 3 This is a side view provided by the present invention;

[0030] Figure 4 This is a schematic diagram of the Y-axis displacement mechanism;

[0031] Figure 5 This is the front view of the X-axis displacement mechanism;

[0032] Figure 6 This is a schematic diagram of the Z-axis displacement mechanism;

[0033] Figure 7 This is a front view of the coating mechanism;

[0034] Figure 8 This is a schematic diagram of the motion state of the coating mechanism;

[0035] Figure 9 This is a structural schematic diagram of the load-bearing mechanism;

[0036] Figure 10 This is a schematic diagram of the length adjustment component;

[0037] Figure 11 This is the front view of the length adjustment component;

[0038] Figure 12 This is a schematic diagram of the forearm structure;

[0039] in:

[0040] 1. Frame; 2. X-axis displacement mechanism; 21. X-axis fixing plate; 22. Transverse screw; 23. X-axis drive motor; 24. X-axis slide rail; 3. Y-axis displacement mechanism; 31. Support frame; 32. Y-axis slide rail; 33. Y-axis fixing plate; 34. Longitudinal screw; 35. Y-axis drive motor; 4. Z-axis displacement mechanism; 41. Support base; 42. Electric guide rail; 43. Lifting plate; 5. Coating mechanism; 51. Drive assembly; 511. Lifting cylinder; 512. Adapter plate; 513. Telescopic rod; 52. Coating assembly; 521. 522. Extended telescopic cylinder; 523. Extended rod; 524. Sleeve shaft; 525. Coating roller; 53. Feeding assembly; 531. Hopper; 532. Airbag; 533. U-shaped rod; 534. Feeding component; 6. Bearing mechanism; 61. Drive head; 62. Passive head; 63. Support roller; 64. Length adjustment assembly; 641. Boom; 642. Arm; 643. Servo drive motor assembly; 644. Coaxial connector; 645. Drive gear; 646. Locking cylinder; 647. Linkage mechanism; 648. Locking gear. Detailed Implementation

[0041] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and to facilitate its implementation.

[0042] Specifically, such as Figures 1 to 12 As shown, a length-adaptive steel pipe coating device includes a frame 1, and further includes:

[0043] X-axis displacement mechanism 2, wherein two sets of X-axis displacement mechanism 2 are provided and are symmetrically installed on both sides of the frame 1;

[0044] Y-axis displacement mechanism 3, which is installed between two sets of X-axis displacement mechanisms 2;

[0045] Z-axis displacement mechanism 4, the Z-axis displacement mechanism 4 is provided in two sets, and is symmetrically installed at the front and rear ends on one side of the Z-axis displacement mechanism 4;

[0046] Coating mechanism 5, which is installed below Z-axis displacement mechanism 4;

[0047] The supporting mechanism 6 is slidably mounted in the ground rail via a support plate;

[0048] The load-bearing mechanism 6 includes a drive head 61, a passive head 62, support rollers 63 respectively installed on the drive head 61 and the passive head 62, and a length adjustment assembly 64 installed between the drive head 61 and the passive head 62.

[0049] In this embodiment, the steel pipe to be coated is first placed on the bearing mechanism 6, and the relative position of the two car heads is adjusted by the length adjustment component 64 to accommodate different steel pipe lengths. Then, the position of the coating mechanism 5 is adjusted sequentially by the X-axis displacement mechanism 2, the Y-axis displacement mechanism 3 and the Z-axis displacement mechanism 4 to coat the steel pipe below.

[0050] It should be noted that the drive head 61 is equipped with four traveling wheels at the bottom to maintain a fixed track gauge and wheelbase. The passive head is equipped with the same traveling wheel set as the active head. The coating mechanism 5 can coat the outside of the steel pipe or extend into the inside of the steel pipe to coat the inner wall of the steel pipe.

[0051] The length adjustment assembly 64 includes two sets of booms 641 connected to the drive head 61, two sets of slender booms 642 disposed inside the booms 641 and connected to the passive head 62, a servo drive motor assembly 643 mounted on the booms 641, a coaxial connector 644 connected to the output end of the servo drive motor assembly 643, and two sets of drive gears 645 mounted on the coaxial connector 644.

[0052] It should be noted that the drive head 61 is equipped with four traveling wheels at the bottom to maintain a fixed track gauge and wheelbase. The small boom 642 connected to the vehicle body is equipped with guide parts to guide the small boom 642 into the large boom 641 under the meshing of gears and racks. The passive head 42 is equipped with the same traveling wheel set as the active head. The principle of this invention is that the drive gear drives the relative movement of the large and small booms to adjust the relative position of the two heads, thereby adapting to different steel pipe lengths.

[0053] In addition, the boom 642 is a welded structure with a rack at the bottom and a guide element on the boom. One end is open and the other end can be connected to the passive tractor. Two booms can be used at the same time.

[0054] The boom is a welded hollow structure. One end is equipped with a gear-driven servo motor, drive gear, coaxial connector, locking gear, linkage mechanism, locking cylinder and other components. The other end of the boom can be connected to the drive unit. The two booms are connected together by the coaxial connector.

[0055] The length adjustment assembly 64 also includes two sets of locking cylinders 646 respectively installed on the boom 641, a linkage mechanism 647 connected to the output end of the locking cylinders 646, and a locking gear 648 installed on the linkage mechanism 647.

[0056] Guide members and a rack located below the forearm 642 are evenly spaced on the forearm 642.

[0057] It should be noted that the servo motor drives the gears to rotate in both directions, and the coaxial mechanism synchronously drives the gears at both ends of the boom to drive the rack, so that the boom can reciprocate and adjust the relative position of the boom and the boom. The guide component of the boom can provide suitable guidance to keep the meshing of the gear and rack in good condition. The movement of the boom drives the passive front end to move to the preset front end length.

[0058] In detail, the position locking mechanism operates as follows: when the large and small booms are adjusted to their positions and the drive motor stops running (i.e., the two booms reach the set support steel pipe length), the position locking mechanism begins to move forward. The locking cylinder pushes the linkage mechanism to move, and the linkage mechanism drives the locking gear to mesh with the rack's forward meshing surface. The cylinder has adjustable pressure and a mechanical limit in the locked position. The distance between the locking gear and the drive gear in the boom translation direction is an integer pitch of 0.95 times the rack pitch. Therefore, the locking gear in the non-locked position does not affect the normal meshing of the gear and rack, meaning the large and small booms can be adjusted normally. In the locked position, it interlocks with the servo motor's stop, ensuring that the coating vehicle stably maintains the relative position of the two booms during reciprocating motion.

[0059] In addition, in the production process, the front-end process of the coating process is the weighing and length measurement process. The weighing and length measurement results are automatically entered into the system with the pipe number as the index. When the steel pipe enters the coating process, the online barcode scanning system retrieves the pipe number, and the pipe length parameter is immediately entered into the coating process control system. The length of the coating vehicle is adjusted to a suitable position when waiting to load the material.

[0060] The X-axis displacement mechanism 2 includes two sets of X-axis fixing plates 21 mounted on the frame 1, a transverse screw 22 mounted between the two sets of X-axis fixing plates 21, an X-axis drive motor 23 connected to the transverse screw 22, and an X-axis slide rail 24 disposed between the two sets of X-axis fixing plates 21.

[0061] It should be noted that by starting the X-axis drive motor 23, the transverse screw 22 is rotated, thereby causing the support frame 31 to move on the X-axis slide rail 24.

[0062] The Y-axis displacement mechanism 3 includes a support frame 31 slidably connected to the X-axis slide rail 24, a Y-axis slide rail 32 installed on one side of the support frame 31, two sets of Y-axis fixing plates 33 installed on the support frame 31, a longitudinal screw 34 installed between the two sets of Y-axis fixing plates 33, and a Y-axis drive motor 35 connected to the longitudinal screw 34.

[0063] It should be noted that by starting the Y-axis drive motor 35, the longitudinal screw 34 is rotated, thereby causing the support base 41 to move on the Y-axis slide rail 32.

[0064] The Z-axis displacement mechanism 4 includes a support base 41 slidably connected to the Y-axis slide rail 32, an electric guide rail 42 mounted on the support base 41, and a lifting plate 43 mounted on the electric guide rail 42.

[0065] It should be noted that starting the electric guide rail 42 will drive the lifting plate 43 to move up and down. Its function is to retract it upwards when the coating mechanism 5 is not working, so as to prevent it from obstructing the movement of the steel pipe, and to lower it down when it is needed for work.

[0066] The coating mechanism 5 includes a drive assembly 51 installed below the lifting plate 43, a coating assembly 52 installed below the drive assembly 51, and a feeding assembly 53 adapted to the coating assembly 52.

[0067] The drive assembly 51 includes a lifting cylinder 511, a transition plate 512 connected to the lifting rod of the lifting cylinder 511, and a telescopic rod 513 slidably disposed on the transition plate 512. The top end of the telescopic rod 513 is slidably connected to the frame 1.

[0068] It should be noted that when the Z-axis displacement mechanism 4 descends too far, the lifting cylinder 511 needs to be activated to drive the adapter plate 512 to continue descending, thus supplementing the Z-axis displacement mechanism 4. At the same time, the telescopic rod 513 strengthens the adapter plate 512 to prevent it from losing its weight capacity, and it is set as a sliding connection to avoid hindering its position adjustment.

[0069] The coating assembly 52 includes a mounting plate fixedly connected to the adapter plate 512, an extended telescopic cylinder 521 fixedly connected to the mounting plate, an extended rod 522 connected to the output rod of the extended telescopic cylinder 521, a sleeve shaft 523 sleeved on the extended rod 522 and rotatably connected to the extended rod 522, and a coating roller 524 sleeved on the sleeve shaft 523.

[0070] It should be noted that when coating the outside of the steel pipe, the coating component 52 is moved to directly above one end of the steel pipe through the coordinated operation of multiple displacement mechanisms. Then, the steel pipe is rotated by the support roller 63, which can uniformly coat the steel pipe. Then, by activating the extended telescopic cylinder 521, it can move inward at a uniform speed, that is, uniformly coat the steel pipe. In this solution, the coating roller 524 is a contact coating with the steel pipe, so even if some parts of the steel pipe are coated multiple times, they will be carried away by the subsequent roller pressure. That is, as long as the steel pipe is in contact with the coating roller 524, its coating thickness will be consistent and uniform.

[0071] When coating the inside of the steel pipe, the coating component 52 is sent into one end of the inside of the steel pipe through the cooperation of multiple displacement mechanisms. Then, the steel pipe is rotated by the support roller 63, so that the coating work on the inner wall of the steel pipe can be carried out evenly. Then, by starting the extended telescopic cylinder 521, it can move inward at a uniform speed, so that the inner wall of the steel pipe can be coated evenly.

[0072] In addition, since the coating mechanism 5 is symmetrically arranged in two sets, it can ensure that there is enough distance to coat the inside of the steel pipe. The coating component 52 can coat both the inside and outside of the steel pipe, reducing the need for conventional steel pipe coating equipment. At the same time, it can coat both the inside and outside of the steel pipe simultaneously without changing the site. This not only saves time and labor costs for changing equipment, but also significantly shortens the production cycle.

[0073] The feeding assembly 53 includes a hopper 531 disposed above the extended telescopic cylinder 521, an airbag 532 fixedly installed on the extended rod 522 by a connecting rod, a U-shaped rod 533 connected to one end of the extended rod 522, a feeding component 534 installed between the airbag 532 and the U-shaped rod 533, and a cam 535 fixedly connected to the sleeve shaft 523;

[0074] The airbag 532 is connected to the hopper 531 and the feeding component 534 through air pipes, and the feeding component 534 has a drip outlet at the bottom.

[0075] It should be noted that, regardless of whether the coating is applied to the outside or inside of the steel pipe, when the coating roller 524 rotates, it drives the inner sleeve 523 to rotate, and the cam 535 on one side also rotates accordingly, thus intermittently squeezing the airbag 532. A one-way valve is installed on the air pipe connecting the airbag 532 and the material bin 531. That is, the airbag 532 draws paint from the material bin 531 and sends it to the feeding component 534. The feeding component 534 is located directly above the coating roller 524, so that the paint is fed to the coating roller 524 through the drip nozzle. That is, the feeding work is completed through coating, which is automated and does not require additional power. The two structures are precise and work together more perfectly. This not only avoids the leakage and waste that may occur in the traditional feeding method, but also ensures the stability and consistency of the coating quality.

[0076] The specific working method is described below using specific embodiments:

[0077] Example 1:

[0078] First, the steel pipe to be coated is placed on the bearing mechanism 6, and the relative position of the two heads is adjusted by the length adjustment component 64 to accommodate different steel pipe lengths. Then, the position of the coating mechanism 5 is adjusted sequentially by the X-axis displacement mechanism 2, Y-axis displacement mechanism 3 and Z-axis displacement mechanism 4. When coating the outside of the steel pipe, the coating component 52 is moved to directly above one end of the steel pipe through the cooperation of multiple displacement mechanisms. Then, the steel pipe is rotated by the support roller 63 to uniformly coat the steel pipe. Then, by activating the extension telescopic cylinder 521, it can move inward at a uniform speed to uniformly coat the steel pipe. In this scheme, the coating roller 524 is a contact coating with the steel pipe, so even if some parts of the steel pipe are coated multiple times, they will be carried away by the subsequent roller pressure. That is, as long as the steel pipe is in contact with the coating roller 524, its coating thickness will be consistent and uniform.

[0079] When coating the inside of the steel pipe, the coating component 52 needs to be fed into one end of the inside of the steel pipe through the cooperation of multiple sets of displacement mechanisms. Then, the steel pipe is rotated by the support roller 63, so that the coating work can be carried out evenly on the inner wall of the steel pipe. Then, by activating the extended telescopic cylinder 521, it can move inward at a uniform speed, so that the inner wall of the steel pipe is evenly coated.

[0080] Example 2:

[0081] Whether coating the outside or inside of the steel pipe, when the coating roller 524 rotates, it drives the inner sleeve 523 to rotate, and the cam 535 on one side also rotates accordingly, thus intermittently squeezing the airbag 532. The airbag 532 is connected to the material bin 531 by a one-way valve, which means that the airbag 532 will draw paint from the material bin 531 and send it to the feeding component 534. The feeding component 534 is located directly above the coating roller 524, so that it feeds paint to the coating roller 524 through the drip nozzle. That is, the feeding work is completed through coating, which is automated and does not require additional power. The two structures are precise and work together more perfectly, which not only avoids the leakage and waste that may occur in the traditional feeding method, but also ensures the stability and consistency of coating quality.

[0082] Example 3:

[0083] The bottom of the drive head 61 is equipped with four traveling wheels to maintain a fixed track gauge and wheelbase. The body is connected to the boom 642, which is equipped with guide parts to guide the boom 642 into the boom 641 under the meshing of gears and racks. The passive head 42 is equipped with the same set of traveling wheels as the active head. The principle of this invention is that the drive gear drives the relative movement of the boom and the boom to adjust the relative position of the two heads, thereby adapting to different steel pipe lengths.

[0084] The servo motor drives the gears to rotate in both directions. The coaxial mechanism synchronously drives the gears at both ends of the boom to drive the rack, allowing the boom to reciprocate. The relative positions of the boom and boom are adjusted. The boom guide component provides suitable guidance to maintain good meshing of the gears and rack. The movement of the boom drives the passive tractor to move to the preset tractor length.

[0085] Position locking: When the large and small booms are adjusted to their positions, the drive motor stops running, meaning the two booms reach the set support steel pipe length. The position locking mechanism then begins to move forward, and the locking cylinder pushes the linkage mechanism to move. The linkage mechanism drives the locking gear to mesh with the rack's forward meshing surface. The cylinder has adjustable pressure and a mechanical limit in the locked position. The distance between the locking gear and the drive gear in the boom translation direction is an integer pitch of 0.95 times the rack pitch. Therefore, the locking gear in the non-locked position does not affect the normal meshing of the gear and rack, meaning the large and small booms can be adjusted normally. In the locked position, it interlocks with the servo motor's stop, ensuring that the coating vehicle stably maintains the relative position of the two booms during reciprocating motion.

[0086] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A length-adaptive steel pipe coating device, comprising a frame (1), characterized in that, Also includes: X-axis displacement mechanism (2), the X-axis displacement mechanism (2) is provided in two sets and is symmetrically installed on both sides of the frame (1); Y-axis displacement mechanism (3), which is installed between two sets of X-axis displacement mechanisms (2); Z-axis displacement mechanism (4), the Z-axis displacement mechanism (4) is provided in two sets and is symmetrically installed on the front and rear ends of one side of the Y-axis displacement mechanism (3); A coating mechanism (5) is installed below the Z-axis displacement mechanism (4); The bearing mechanism (6) is slidably mounted in the ground rail via a support plate; The load-bearing mechanism (6) includes a drive head (61), a passive head (62), support rollers (63) respectively installed on the drive head (61) and the passive head (62), and a length adjustment assembly (64) installed between the drive head (61) and the passive head (62). The length adjustment assembly (64) includes two sets of booms (641) connected to the drive head (61), two sets of slender booms (642) disposed inside the booms (641) and connected to the passive head (62), a servo drive motor assembly (643) mounted on the booms (641), a coaxial connector (644) connected to the output end of the servo drive motor assembly (643), and two sets of drive gears (645) mounted on the coaxial connector (644). The length adjustment assembly (64) also includes two sets of locking cylinders (646) respectively installed on the boom (641), a linkage mechanism (647) connected to the output end of the locking cylinder (646), and a locking gear (648) installed on the linkage mechanism (647). Guide members and a rack located below the forearm (642) are evenly spaced on the forearm (642).

2. The length-adaptive steel pipe coating equipment according to claim 1, characterized in that: The X-axis displacement mechanism (2) includes two sets of X-axis fixing plates (21) mounted on the frame (1), a transverse screw (22) mounted between the two sets of X-axis fixing plates (21), an X-axis drive motor (23) connected to the transverse screw (22), and an X-axis slide rail (24) set between the two sets of X-axis fixing plates (21).

3. The length-adaptive steel pipe coating equipment according to claim 2, characterized in that: The Y-axis displacement mechanism (3) includes a support frame (31) slidably connected to the X-axis slide rail (24), a Y-axis slide rail (32) installed on one side of the support frame (31), two sets of Y-axis fixing plates (33) installed on the support frame (31), a longitudinal screw (34) installed between the two sets of Y-axis fixing plates (33), and a Y-axis drive motor (35) connected to the longitudinal screw (34).

4. The length-adaptive steel pipe coating equipment according to claim 3, characterized in that: The Z-axis displacement mechanism (4) includes a support base (41) slidably connected to the Y-axis slide rail (32), an electric guide rail (42) mounted on the support base (41), and a lifting plate (43) mounted on the electric guide rail (42).

5. The length-adaptive steel pipe coating equipment according to claim 4, characterized in that: The coating mechanism (5) includes a drive assembly (51) installed below the lifting plate (43), a coating assembly (52) installed below the drive assembly (51), and a feeding assembly (53) adapted to the coating assembly (52).

6. The length-adaptive steel pipe coating equipment according to claim 5, characterized in that: The drive assembly (51) includes a lifting cylinder (511), a transition plate (512) connected to the lifting rod of the lifting cylinder (511), and a telescopic rod (513) slidably disposed on the transition plate (512). The top end of the telescopic rod (513) is slidably connected to the frame (1).

7. The length-adaptive steel pipe coating equipment according to claim 6, characterized in that: The coating assembly (52) includes a mounting plate fixedly connected to the adapter plate (512), an extended telescopic cylinder (521) fixedly connected to the mounting plate, an extended rod (522) connected to the output rod of the extended telescopic cylinder (521), a sleeve shaft (523) sleeved on the extended rod (522) and rotatably connected to the extended rod (522), and a coating roller (524) sleeved on the sleeve shaft (523).

8. The length-adaptive steel pipe coating equipment according to claim 7, characterized in that: The feeding assembly (53) includes a hopper (531) disposed above the extended telescopic cylinder (521), an airbag (532) fixedly mounted on the extended rod (522) by a connecting rod, a U-shaped rod (533) connected to one end of the extended rod (522), a feeding component (534) installed between the airbag (532) and the U-shaped rod (533), and a cam (535) fixedly connected to the sleeve shaft (523). The airbag (532) is connected to the hopper (531) and the feeding device (534) through air pipes respectively, and a drip port is provided below the feeding device (534).

Images