A template device for setting the paint thickness of a profiled steel web and a method of using the same

Abstract

The application discloses a kind of settable profile steel web paint thickness template device and its using method, which belongs to the technical field of profile steel web paint construction technology.The device includes a template body, a connecting assembly provided on the template body, a neodymium iron boron magnetic seat assembly connected with the connecting assembly and used for magnetic fixation with the profile steel web, a thickness measuring assembly provided on the template body and used for measuring the distance between the template body and the profile steel web, and an adjusting thickness assembly provided on the template body and used for adjusting the distance between the template body and the profile steel web.The application is easy to install and disassemble, and the template body can be fixed by magnetic fixation with the profile steel web through the neodymium iron boron magnetic seat assembly, which saves time and effort.The template body is provided with a thickness measuring assembly and an adjusting thickness assembly, which facilitates the adjustment of the distance between the template body and the profile steel web, thereby setting the required paint layer thickness, effectively controlling the paint layer thickness, and making the paint layer meet the design thickness requirement after one-time forming.

Description

Technical Field

[0001] This invention relates to the field of coating construction for steel webs, specifically to a template device and its method of use that allows setting the coating thickness for steel webs. Background Technology

[0002] The web of a steel profile refers to the middle plate connecting the upper and lower flanges or the two side flanges of the steel profile. Traditionally, non-intumescent fire-retardant coatings are applied to the web of steel profiles using a direct application method. However, this method relies entirely on workers' intuition and experience to control the coating thickness, which cannot be visually represented. This often leads to problems during physical inspection, such as severely excessive local thickness causing paint waste and insufficient local thickness requiring rework and repair, resulting in the inability to guarantee the construction period. In addition, due to the relatively tall and complex steel structure frames in petroleum, chemical, and petrochemical industries, the uneven thickness caused by the above-mentioned direct application method can leave hidden quality problems. Therefore, we propose a template device and its usage method that can set the coating thickness for steel profile webs. Summary of the Invention

[0003] The purpose of this invention is to provide a template device and its method of use for setting the thickness of coating on the web of a steel profile, which solves the technical problems mentioned in the background art.

[0004] The present invention achieves the above objectives through the following technical solutions: A template device for setting the coating thickness on the web of a steel profile is used to install on the web of a steel profile to set the coating layer thickness applied to the surface of the web. The device includes a template body, a connecting component on the template body, a neodymium iron boron magnetic base assembly connected to the connecting component and used for magnetic fixation with the web of the steel profile, a thickness measuring component on the template body for measuring the distance between the template body and the web of the steel profile, and a thickness adjusting component on the template body for adjusting the distance between the template body and the web of the steel profile.

[0005] A further improvement is that the template body is a rectangular frame, the connecting components are provided in at least four sets, and the at least four sets of connecting components are respectively located at the four corners of the template body. Each connecting component is connected to a neodymium iron boron magnetic base assembly. The thickness measuring components and the thickness adjusting components are provided in at least four sets, and the at least four sets of thickness measuring components are respectively located at the four corners of the short side or the four corners of the long side of the template body. The at least four sets of thickness adjusting components are respectively located at the four corners of the long side or the four corners of the short side of the template body.

[0006] A further improvement is that the connecting assembly includes a slide groove on the neodymium iron boron magnet assembly, a slider detachably fixed in the slide groove, and a slide bolt inserted into the slider. One end of the slide bolt extends into a trapezoidal hole opened on the template body. A compression spring is sleeved on the outer wall of the slide bolt. The compression spring is used to provide a preload force to the template body in the direction of the web of the steel section.

[0007] A further improvement is that the neodymium iron boron magnet assembly includes a housing, which includes four magnetically affinity material shells arranged in a surrounding manner. Adjacent shells are connected by magnetic isolation strips. Four working surfaces for adsorbing steel webs are formed on the outside of the housing. Each working surface is movably inserted with a magnetic plate for conducting between adjacent shells. An inner cavity is formed inside the housing, and a magnet is provided in the inner cavity. By changing the direction of the magnet's magnetic poles and the insertion position of the magnetic plate, the magnetic conductivity / non-magnetic conductivity of any working surface can be achieved.

[0008] A further improvement is that a cover plate is provided at one end of the housing, and a magnetic knob for driving the magnet to rotate is rotatably provided on the cover plate; The end of the magnet facing the cover plate is embedded with an elastic positioning steel ball. The inner side of the cover plate is provided with a number of positioning holes and a guide groove connecting two adjacent positioning holes. The elastic positioning steel ball slides in the guide groove and springs into the corresponding positioning hole when it slides to a preset position. There are four sets of positioning holes, and the included angle between two adjacent sets of positioning holes is 90 degrees.

[0009] A further improvement is that the thickness measuring component includes a support plate detachably fixed to the template body, a scale sliding bolt inserted into the support plate, a thickness measuring scale located at one end of the scale sliding bolt and used to contact the surface of the steel web, and a push spring sleeved on the outer wall of the scale sliding bolt. The two ends of the push spring are respectively connected to the support plate and the thickness measuring scale to push the thickness measuring scale to contact the surface of the steel web.

[0010] A further improvement is that the thickness adjustment component includes a threaded sleeve that is detachably fixed to the template body. A ball head bolt is screwed into the threaded sleeve. One end of the ball head bolt is used to contact the surface of the web of the steel section, and the other end is provided with a handwheel.

[0011] A further improvement is that the threaded sleeve is detachably fixed to the template body by a clamping nut fitted on its outer wall and a countersunk nut embedded in the template body.

[0012] The method of using the template device described above includes the following steps: S1: Attach this template device to the preset position on the surface of the steel web plate, and fix it to the steel web plate magnetically by means of neodymium iron boron magnetic base assembly; S2: Based on the distance between the template body and the steel web measured by the thickness measuring component, adjust the distance between the template body and the steel web by adjusting the thickness component until the distance between the template body and the steel web reaches the required coating thickness, thus completing the pre-setting of the coating thickness. S3: Apply paint to the surface of the steel web and smooth the paint using the side of the template body away from the steel web as a reference until the paint thickness is consistent with the preset thickness. S4: After the coating has dried and formed a coating layer, disconnect the magnetic force of the neodymium iron boron magnet assembly, remove the entire template device, and then apply a finishing coat to the area covered by the template body.

[0013] A further improvement is that the fixing and separation of the neodymium iron boron magnet assembly from the steel web includes the following steps; S5: Select the target working surface of the shell according to the actual working conditions, insert magnetic plates on the two working surfaces adjacent to the target working surface, and do not insert magnetic plates on the other working surfaces. S6: The target working surface of the shell is brought into contact with the web of the steel profile. By adjusting the direction of the magnetic poles of the magnet, the magnetic lines of force of the magnet are made to form a closed magnetic circuit through the two shells and the web of the steel profile corresponding to the target working surface, thereby making the neodymium iron boron magnet base assembly magnetically fixed to the web of the steel profile. S7: During separation, the magnetic pole direction of the magnet is changed so that the magnetic lines of force form a closed loop only inside each shell without passing through the steel web, thereby separating the neodymium iron boron magnet base assembly from the steel web.

[0014] The beneficial effects of this invention are as follows: This invention is easy to install and disassemble. The template body is fixed by magnetic attraction between the neodymium iron boron magnetic base assembly and the steel web plate, saving time and effort. The template body is equipped with a thickness measuring component and a thickness adjustment component, which allows for easy adjustment of the distance between the template body and the steel web plate, thereby setting the required coating thickness and effectively controlling the coating thickness. This ensures that the coating layer meets the design thickness requirements after one-time forming, eliminating the need for subsequent leveling and repair processes. It effectively avoids coating defects caused by human error and significantly improves the flatness of the formed surface and the overall appearance quality. Attached Figure Description

[0015] Figure 1 This is a front view of the template device structure of the present invention; Figure 2 For the present invention Figure 1 Sectional view of the AA structure in the image; Figure 3 For the present invention Figure 1 A schematic diagram of a local structure in the image; Figure 4 For the present invention Figure 3 Sectional view of the BB structure; Figure 5 This is a schematic diagram of the neodymium iron boron magnet assembly structure in this invention; Figure 6 For the present invention Figure 5 Cross-sectional view of the CC structure; Figure 7 This is a schematic diagram of the neodymium iron boron magnet assembly from another perspective. Figure 8 For the present invention Figure 7 Sectional view of the DD structure; Figure 9 This is a schematic diagram of the magnet structure in this invention; Figure 10 This is a schematic diagram illustrating the fixing and separation of the neodymium iron boron magnet base assembly from the steel web plate of the present invention.

[0016] In the diagram: 1. Template body; 2. Coating layer; 3. Steel web; 4. Connecting assembly; 401. Slide groove; 402. Slide bolt; 403. Slider; 404. Compression spring; 5. Neodymium iron boron magnetic base assembly; 501. Outer shell; 502. Magnetic knob; 503. Elastic positioning steel ball; 504. Magnetic plate; 505. Cover plate; 506. Magnetic strip; 507. Magnet; 6. Thickness measuring assembly; 601. Support plate; 602. Scale sliding bolt; 603. Push spring; 604. Thickness measuring scale; 7. Thickness adjusting assembly; 701. Handwheel; 702. Threaded sleeve; 703. Compression nut; 704. Countersunk nut; 705. Ball head bolt. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0018] Please see the appendix Figure 1-4 A template device for setting the thickness of coating on a steel web is used to install on a steel web 3 to set the thickness of the coating layer 2 applied to the surface of the steel web 3. In this embodiment, the steel web 3 includes an H-beam web, a T-beam web, an I-beam web, and a channel steel web. The coating layer 2 is a non-expanding fireproof coating applied to the surface of the steel web 3. The device in this embodiment includes a template body 1, a connecting component 4 disposed on the template body 1, a neodymium iron boron magnetic base assembly 5 connected to the connecting component 4 and used for magnetic fixation with the steel web 3, a thickness measuring component 6 disposed on the template body 1 and used for measuring the distance between the template body 1 and the steel web 3, and an adjusting thickness component 7 disposed on the template body 1 for adjusting the distance between the template body 1 and the steel web 3.

[0019] Preferably, the template body 1 in this embodiment is a rectangular frame with two long sides and two short sides, and the overall shape is a rectangle with a hollow center on all four sides. It is preferably made of aluminum alloy profiles. There are at least four sets of connecting components 4, and at least four sets of connecting components 4 are respectively located at the four corners of the template body 1. Each connecting component 4 is connected to a neodymium iron boron magnetic base assembly 5, that is, there are four sets of neodymium iron boron magnetic base assemblies 5. There are at least four sets of thickness measuring components 6 and at least four sets of thickness adjusting components 7, and at least four sets of thickness measuring components 6 are respectively located at the four corners of the short side or the four corners of the long side of the template body 1. At least four sets of thickness adjusting components 7 are respectively located at the four corners of the long side or the four corners of the short side of the template body 1, as shown in the attached figure. Figure 1 and attached Figure 3 As shown, preferably, in this embodiment, the four sets of thickness measuring components 6 are respectively located at the four corners of the short side of the template body 1, while the four sets of thickness adjusting components 7 are respectively located at the four corners of the long side of the template body 1.

[0020] Preferably, the connecting component 4 in this embodiment includes a slide groove 401 disposed on the neodymium iron boron magnet base assembly 5, a slider 403 detachably fixed in the slide groove 401, and a slide bolt 402 inserted into the slider 403. Preferably, the slide groove 401 in this embodiment is made of thick aluminum alloy C-shaped guide rail groove, and has three bolt holes. The bolt holes on both sides are used for bolt connection with the neodymium iron boron magnet base assembly 5 (specifically the outer shell 501), and the bolt hole in the middle is used for connection and fixation with the slider 403. The slider 403 is made of stainless steel square steel, and a hanging plate is designed on the slider 403. A threaded hole is drilled in the slider 403 for fixed connection with the slide groove 401. A hole is made in the hanging plate of the slider 403 for inserting and installing the sliding bolt 402. The sliding bolt 402 is, for example, a countersunk sliding bolt. One end of the sliding bolt 402 extends into the trapezoidal hole opened in the template body 1. A compression spring 404 is sleeved on the outer wall of the sliding bolt 402. The two ends of the compression spring 404 are respectively connected to the surface of the template body 1 and the hanging plate of the slider 403. The compression spring 404 is used to provide the template body 1 with a preload force in the direction of the steel web 3. This method can not only effectively buffer the impact force when the neodymium iron boron magnetic seat assembly 5 is attracted, avoiding rigid collision between the template body 1 and the steel web 3, but also continuously provide the template body 1 with a stable preload force in the direction of the steel web 3.

[0021] Please see the appendix Figure 5-9Preferably, the NdFeB magnet base assembly 5 in this embodiment includes an outer square and inner circular shell. The shell includes four surrounding magnetically conductive outer shells 501 (such as cast iron, which has strong magnetic permeability). Adjacent outer shells 501 are connected by magnetic shielding strips 506. In this embodiment, the magnetic shielding strips 506 are preferably brass magnetic shielding strips, which do not have magnetic permeability. The magnetic shielding strips 506 cause the four outer shells 501 to lose their magnetic permeability, and the outer shells 501 can only be magnetically permeable through the magnetic plates 504. The outer shell has four working surfaces for adsorbing the steel web 3. Each working surface is movably inserted with a magnetic plate 504 for conducting between adjacent outer shells 501. In this embodiment, each of the four working surfaces of the shell (including the upper side, lower side, left side, and right side) has a trapezoidal magnetic shielding groove. The inner wall of the trapezoidal magnetic shielding groove has The magnetic plate 504 is made of Q235 carbon steel plate and has a pull ring at the end of the magnetic plate 504 to facilitate its removal from the slot. The insertion and removal of the magnetic plate 504 serves to conduct and disconnect the magnetic lines of force. An inner cavity is formed inside the housing, and a magnet 507 is provided in the inner cavity. In this embodiment, the magnet 507 includes an upper half of NdFeB body and a lower half of NdFeB body arranged symmetrically. The two are attracted to form a cylinder. One end face of the magnet 507 is provided with an end face groove for the magnetic knob 502 to be inserted. Both the upper half of NdFeB body and the lower half of NdFeB body are made of NdFeB material with super strong magnetic force. They have high magnetic energy product, which is far greater than that of ferrite and AlNiCo magnets. They have high remanence and high coercivity, can maintain strong magnetism and are not easy to demagnetize. Both of them have semi-circular end faces. By changing the magnetic pole direction of magnet 507 and the insertion position of magnetic plate 504, the magnetic conductivity / non-magnetic conductivity of any working surface can be achieved. Preferably, one end of the housing in this embodiment is hollow, and a cover plate 505 is provided at the hollow end. The cover plate 505 in this embodiment is made of stainless steel plate, and bolt holes can be opened at its four corners for fixing to one end of the housing by bolts. The four outer sides of the cover plate 505 are also provided with trapezoidal magnetic shielding grooves and slots, which are the same in size, shape and position as the trapezoidal magnetic shielding grooves and slots on the four outer sides of the housing. A magnetic knob 502 for driving the magnet 507 to rotate is rotatably provided on the cover plate 505. Preferably, the magnetic knob 502 in this embodiment consists of a knob, a knob sleeve, a baffle and an embedded block. The central knob is made of stainless steel and is circular in shape. The outer side of the knob has a groove around its circumference for installing and fixing the knob sleeve. The baffle is integrated with the knob. The baffle is inside the cover plate 505 and is used to fix the entire magnetic knob 502. The knob is outside the cover plate 505 and is used to install the knob sleeve. The insert block is long and narrow, with a width slightly smaller than the end face groove, and is used to insert into the end face groove of the magnet 507. The knob sleeve is made of high-strength plastic and has grooves inside and outside. The internal grooves cooperate with the grooves on the knob to prevent slippage, and the external grooves increase the roughness between the fingers and the knob sleeve to prevent the fingers from slipping during operation. An elastic positioning steel ball 503 is embedded at one end of the magnet 507 facing the cover plate 505. Specifically, a blind hole is opened at 45° above the upper half of the neodymium iron boron body, and the elastic positioning steel ball 503 is disposed in the blind hole. In this embodiment, the elastic positioning steel ball 503 is composed of a stainless steel ball, a tail rod, and a push spring. The stainless steel ball and the tail rod are welded together, and the push spring is sleeved on the tail rod to press the steel ball. The elastic positioning steel ball 503 plays a positioning role. When the elastic positioning steel ball 503 rotates with the magnet 507 to different positions... Different working surfaces have the function of magnetic flux transfer and magnetic demagnetization. The inner side of the cover plate 505 is provided with several positioning holes and guide grooves connecting two adjacent positioning holes. The elastic positioning steel ball 503 slides in the guide groove and pops into the corresponding positioning hole when it slides to the preset position. There are four sets of positioning holes, and the included angle between two adjacent sets of positioning holes is 90 degrees. When the elastic positioning steel ball 503 rotates to the preset position (the preset position is the position that makes the target working surface generate magnetic force or demagnetize), the elastic positioning steel ball 503 automatically gets stuck into the corresponding positioning hole.

[0022] Please see the appendix Figure 1-4Preferably, the thickness measuring component 6 in this embodiment includes a support plate 601 detachably fixed to the template body 1, a scale sliding bolt 602 inserted into the support plate 601, a thickness measuring scale 604 disposed at one end of the scale sliding bolt 602 and used to contact the surface of the steel web 3 to indicate the distance, and a push spring 603 sleeved on the outer wall of the scale sliding bolt 602. The two ends of the push spring 603 are respectively connected to the support plate 601 and the thickness measuring scale 604 to push the thickness measuring scale 604 to contact the surface of the steel web 3. Preferably, the support plate 601 in this embodiment is U-shaped and made of aluminum alloy. Made of channel steel, the support plate 601 has two legs, one higher than the other. A bolt hole is opened on the lower side for connection with the template body 1, and two bolt holes are symmetrically opened on the higher side. A countersunk fixing bolt is inserted through the bolt hole on the lower side and the bolt hole on the higher side to detachably fix it to the template body 1. A scale sliding bolt 602 is installed in the other bolt hole on the higher side. The thickness measuring scale 604 is made of stainless steel and has laser-engraved scales and numbers on it. It is used to set the thickness of the coating layer 2 to be applied. One end of it is connected to the surface of the steel web plate 3 through the strip hole opened on the template body 1.

[0023] Preferably, the thickness adjustment component 7 in this embodiment includes a threaded sleeve 702 detachably fixed to the template body 1. A ball head bolt 705 is screwed into the internal thread of the threaded sleeve 702. One end of the ball head bolt 705 is used to contact the surface of the steel web 3, and the other end is provided with a handwheel 701. Preferably, the handwheel 701 in this embodiment is made of casting, with uniformly distributed grooves around its outer circumference to improve the feel of operation and prevent slippage. It has an internal threaded hole in the middle for connecting the ball head bolt 705. The threaded sleeve 702 is made of carbon steel pipe with full internal threads for screwing in the ball head bolt 705. A steel ball is welded to one end of the ball head bolt 705 to make the rotation of the thickness adjustment component 7 easier. The other end is screwed into the center hole of the handwheel 701 and fixed with a pin to prevent slippage.

[0024] Preferably, in this embodiment, the threaded sleeve 702 is detachably fixed to the template body 1 by a clamping nut 703 sleeved on its outer wall and a countersunk nut 704 embedded in the template body 1. Preferably, the threaded sleeve 702 in this embodiment has threads at both ends on the outer side to install the clamping nut 703 and the countersunk nut 704, thereby locking the threaded sleeve 702 onto the template body 1.

[0025] A method for setting the coating thickness of a steel web, utilizing the aforementioned template device, includes the following steps: S1: The template device is attached to the preset position on the surface of the steel web 3. At this time, the template body 1 is pressed onto the steel web 3 under the pressure of the compression spring 404. At the same time, the thickness gauge 604 is pushed onto the steel web 3 under the pushing force of the push spring 603. It is magnetically fixed to the steel web 3 by the neodymium iron boron magnetic base assembly 5. S2: The distance between the template body 1 and the steel web 3 is measured by the thickness measuring component 6. The distance between the template body 1 and the steel web 3 is adjusted by the thickness measuring component 7 until the distance between the template body 1 and the steel web 3 reaches the required thickness of the coating layer 2, thus completing the preset setting of the coating layer 2 thickness. Specifically, by rotating the handwheel 701, the ball head of the ball head bolt 705 is pressed against the steel web plate 3. Continuing to rotate the handwheel 701 causes the template body 1 to separate from the steel web plate 3. The gap between the two parts can be read from the thickness gauge 604. At this time, the reading of the thickness gauge 604 is the thickness of the coating layer 2. According to the drawings or relevant specifications, the thickness adjustment component 7 is operated to make the reading of the thickness gauge 604 meet the requirements of the drawings or relevant specifications before the coating work can be carried out. S3: Apply paint to the surface of the steel web 3, and smooth the paint using the side of the template body 1 away from the steel web 3 as a reference until the paint thickness is consistent with the preset thickness. S4: After the coating has dried and formed the coating layer 2, disconnect the magnetic force of the neodymium iron boron magnetic base assembly 5, remove the entire template device, and then apply a finishing coat to the area covered by the template body 1. For example, taking the application of non-expansive fireproof coating to the web of H-beams as an example, firstly, adhesive is applied to the web of H-beams. The adhesive is applied to the web of H-beams every 300mm. Then, the insulation nail hangers are pressed onto the applied adhesive, with the hook openings of the insulation nail hangers facing upwards to prevent the wire mesh from falling off. After the insulation nail hangers have been bonded for 5 hours and the adhesive has cured, lay the fiberglass mesh and then press down and flatten the hooks of the insulation nail hangers. Before applying non-intumescent fire-retardant coatings, a primer must be applied. The primer formula (water, fire-retardant coating, 707 glue) should have the glue accounting for 10%-20% of the coating. First, add the glue and water to the mixing container and stir evenly. Then, add the non-intumescent fire-retardant coating powder. The powder should not be added all at once; it should be added while stirring for 10-15 minutes until it forms a uniform, thick fluid without lumps. Apply the first coat of primer on a fiberglass mesh. The primer thickness should be 1-2mm, not exceeding 2mm, and should be applied evenly. After the coating dries, the next coat can be applied. For the preparation of non-intumescent fire retardant coating, the ratio of fire retardant powder to water is 1:0.8 (by weight). First, add water to the mixing container, then add the coating powder. Do not add the powder all at once; stir continuously for 10-15 minutes until it becomes a uniform, thick fluid without lumps. The mixed coating should be applied within 40 minutes. The thickness of the second coat should not exceed 5mm, and the thickness of each subsequent coat should not exceed 8mm. The interval between each coat should be no less than 24 hours. Only after it is completely dry can the next thicker coat be applied. For thickening, 707 glue can be added appropriately. No more 707 glue should be added to the final topcoat to prevent small surface cracks. Continue applying the coating until the thickness reaches the set thickness of the 604 thickness gauge. When the non-intumescent fire retardant coating has dried to more than 75%, rotate handwheel 701 to release the template body 1, and rotate magnetic knob 502 to disconnect the magnetic attraction of neodymium iron boron magnetic base assembly 5. The template device can then be completely removed. Then, apply non-intumescent fire retardant coating to the areas that have not been coated, according to the thickness of the non-intumescent fire retardant coating that has already been applied. The coating thickness should be consistent with the thickness of the dried non-intumescent fire retardant coating.

[0026] Preferably, the fixing and separation of the neodymium iron boron magnet base assembly 5 from the steel web 3 in this embodiment includes the following steps: S5: Select the target working surface of the shell according to the actual working conditions, insert the magnetic plate 504 on the two working surfaces adjacent to the target working surface, and do not insert the magnetic plate 504 on the other working surfaces. Please see the appendix Figure 10 As shown (attached) Figure 10 (a) For example, if the working surface on the lower side of the shell is taken as the target working surface, then the left magnetic plate 504 and the right magnetic plate 504 are inserted into the left and right working surfaces respectively, while the magnetic plates 504 are not inserted into the lower and upper working surfaces. S6: The target working surface of the shell is brought into contact with the steel web 3. By adjusting the magnetic pole direction of the magnet 507, the magnetic field lines a of the magnet 507 are made to form a closed magnetic circuit through the two shells 501 and the steel web 3 corresponding to the target working surface, thereby magnetically fixing the neodymium iron boron magnet base assembly 5 to the steel web 3; as shown in the attached... Figure 10 As shown on the right, after magnet 507 rotates 90 degrees clockwise from its initial state, magnetic field lines a form a closed magnetic circuit between the S pole of magnet 507, the target working surface, the two outer shells 501, the steel web 3, and the N pole of magnet 507. At this time, the target working surface is attracted to the steel web 3. S7: During separation, the magnetic pole direction of magnet 507 is changed again, so that the magnetic field lines a form a closed loop only inside each outer shell 501 without passing through the steel web 3, thereby separating the NdFeB magnet base assembly 5 from the steel web 3; as shown in the attached... Figure 10As shown on the left, after magnet 507 is rotated 90 degrees counterclockwise to return to its initial state, magnetic field line a forms a closed magnetic circuit in the S pole of magnet 507, outer shell 501, and N pole of magnet 507. Magnetic field line a does not pass through the steel web 3. At this time, the target working surface does not attract the steel web 3, thus completing the separation.

[0027] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A template device for setting the thickness of a coating layer (2) applied to the web of a steel profile, used for mounting on the web (3) of a steel profile to set the thickness of the coating layer (2) applied to the surface of the web (3), characterized in that, The device includes a template body (1), a connecting component (4) disposed on the template body (1), a neodymium iron boron magnetic base assembly (5) connected to the connecting component (4) and used for magnetic fixation with the steel web (3), a thickness measuring component (6) disposed on the template body (1) and used for measuring the distance between the template body (1) and the steel web (3), and a thickness adjusting component (7) disposed on the template body (1) for adjusting the distance between the template body (1) and the steel web (3).

2. The template device according to claim 1, characterized in that, The template body (1) is a rectangular frame. The connecting components (4) are provided in at least four sets, and the at least four sets of connecting components (4) are respectively located at the four corners of the template body (1). Each connecting component (4) is connected to a neodymium iron boron magnet assembly (5). The thickness measuring components (6) and the thickness adjusting components (7) are provided in at least four sets, and the at least four sets of thickness measuring components (6) are respectively located at the four corners of the short side or the four corners of the long side of the template body (1). The at least four sets of thickness adjusting components (7) are respectively located at the four corners of the long side or the four corners of the short side of the template body (1).

3. The template device according to claim 1, characterized in that, The connecting assembly (4) includes a groove (401) on the neodymium iron boron magnet assembly (5), a slider (403) detachably fixed in the groove (401), and a slider bolt (402) inserted into the slider (403). One end of the slider bolt (402) extends into a trapezoidal hole opened on the template body (1). A compression spring (404) is sleeved on the outer wall of the slider bolt (402). The compression spring (404) is used to provide a preload force to the template body (1) in the direction of the steel web (3).

4. The template device according to claim 1, characterized in that, The neodymium iron boron magnet assembly (5) includes a housing, which includes four magnetically affinity material shells (501) arranged in a surrounding manner. Adjacent shells (501) are connected by a magnetic strip (506). Four working surfaces for adsorbing the steel web (3) are formed on the outside of the housing. Each working surface is movably inserted with a magnetic plate (504) for conducting between adjacent shells (501). An inner cavity is formed inside the housing, and a magnet (507) is provided in the inner cavity. By changing the magnetic pole direction of the magnet (507) and the insertion position of the magnetic plate (504), the magnetic conduction / non-magnetic conduction of any working surface can be achieved.

5. The template device according to claim 4, characterized in that, The housing is provided with a cover plate (505) at one end, and a magnetic knob (502) for driving the magnet (507) to rotate is rotatably provided on the cover plate (505); The magnet (507) is embedded with an elastic positioning steel ball (503) at one end facing the cover plate (505). The inner side of the cover plate (505) is provided with a number of positioning holes and a guide groove connecting two adjacent positioning holes. The elastic positioning steel ball (503) slides in the guide groove and springs into the corresponding positioning hole when it slides to a preset position. There are four sets of positioning holes, and the included angle between two adjacent sets of positioning holes is 90 degrees.

6. The template device according to claim 1, characterized in that, The thickness measuring component (6) includes a support plate (601) detachably fixed to the template body (1), a scale sliding bolt (602) inserted into the support plate (601), a thickness measuring scale (604) located at one end of the scale sliding bolt (602) and used to contact the surface of the steel web (3), and a push spring (603) sleeved on the outer wall of the scale sliding bolt (602). The two ends of the push spring (603) are respectively connected to the support plate (601) and the thickness measuring scale (604) to push the thickness measuring scale (604) to contact the surface of the steel web (3).

7. The template device according to claim 1, characterized in that, The thickness adjustment component (7) includes a threaded sleeve (702) that is detachably fixed to the template body (1). A ball head bolt (705) is threaded into the threaded sleeve (702). One end of the ball head bolt (705) is used to contact the surface of the steel web plate (3), and the other end is provided with a handwheel (701).

8. The template device according to claim 7, characterized in that, The threaded sleeve (702) is detachably fixed to the template body (1) by means of a clamping nut (703) sleeved on its outer wall and a countersunk nut (704) embedded in the template body (1).

9. The method of using the template device as described in claim 4, characterized in that, Includes the following steps: S1: Place this template device onto the preset position on the surface of the steel web (3) and fix it to the steel web (3) by magnetic attraction through the neodymium iron boron magnetic base assembly (5); S2: Based on the distance between the template body (1) and the steel web (3) measured by the thickness measuring component (6), adjust the distance between the template body (1) and the steel web (3) by adjusting the thickness component (7) until the distance between the template body (1) and the steel web (3) reaches the required coating layer (2) thickness, thus completing the pre-setting of the coating layer (2) thickness. S3: Apply paint to the surface of the steel web (3) and smooth the paint with the side of the template body (1) away from the steel web (3) as a reference until the paint thickness is consistent with the preset thickness. S4: After the coating has dried and formed the coating layer (2), disconnect the magnetic force of the neodymium iron boron magnet assembly (5), dismantle the template device as a whole, and then finish the coating on the area covered by the template body (1).

10. The method of use according to claim 9, characterized in that, The fixing and separation of the neodymium iron boron magnet assembly (5) from the steel web (3) includes the following steps; S5: Select the target working surface of the shell according to the actual working conditions, insert the magnetic plate (504) on the working surfaces adjacent to the target working surface, and do not insert the magnetic plate (504) on the other working surfaces. S6: The target working surface of the shell is brought into contact with the steel web (3). By adjusting the direction of the magnetic pole of the magnet (507), the magnetic lines of the magnet (507) pass through the two shells (501) and the steel web (3) corresponding to the target working surface to form a closed magnetic circuit, thereby making the neodymium iron boron magnet base assembly (5) magnetically fixed to the steel web (3); S7: During separation, the magnetic pole direction of the magnet (507) is changed so that the magnetic lines of force form a closed loop only inside each shell (501) without passing through the steel web (3), thereby separating the neodymium iron boron magnet assembly (5) from the steel web (3).

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