Split-type device for spraying marks on outer surface of steel pipe

Abstract

The utility model discloses a split type-based device for spraying marks on the outer surface of a steel pipe, and belongs to the technical field of steel pipe mark spraying equipment. The device comprises eight supporting plates, four mark spraying machines, two first supports, two second supports, four third supports, four fourth supports, a fifth support, eighty screws, eight linear bearings, eight rollers, a bottom plate, sixteen rolling bearings, eight screw rods and eight nuts. The device can realize the purpose of simultaneously spraying marks on the outer surfaces of four parts of two steel pipes, and has the characteristics of low manufacturing cost, simplicity in operation and high working efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe marking equipment, and in particular relates to a device for marking the outer surface of a steel pipe based on a split type. Background Art

[0002] At present, in the production field of seamless steel pipes, in order to facilitate the traceability of steel pipe products, it is usually necessary to spray the inner or outer surface of the steel pipe in the finishing workshop. The content of the spraying usually includes basic parameters such as factory mark, standard, specification, steel grade, grade, furnace number, batch number, pipe number, length and weight; however, most domestic companies still use manual template spraying or handheld spraying machines to complete it. The work efficiency of these two methods is relatively low, and the printing effect is not beautiful, which cannot match the batch production rhythm; although some large steel pipe companies have adopted automatic spraying devices, these automatic spraying devices can only spray a single steel pipe, and cannot spray two steel pipes at the same time.

[0003] For example: Patent document CN105365406 A discloses an automatic marking device for steel pipes, which mainly includes a base, a gantry, a column, a crossbeam, a motor, a fan, an air duct, a blower, a cantilever, a crossbar, a temperature sensor, a position sensor, a cylinder, a marking head, a controller, a bracket, a roller conveyor and a support frame. Since the position sensor and the temperature sensor are provided, the device can accurately control the marking position and can mark the outside and inside of the steel pipe, but the device cannot mark two steel pipes at the same time. Patent document CN 213565048 U discloses a marking typing device for hot-dip galvanized steel pipe production line, which mainly includes a conveyor, a belt, a sticky pipe clamp, a motor, a bracket, a photoelectric sensor, a host, a printing nozzle and a sponge glue. Since the conveyor uses a belt conveyor and a sticky pipe clamp in combination, the device can well position the steel pipe and is suitable for marking steel pipes on the production line, but the device cannot mark two steel pipes at the same time. Patent document CN218197576 U discloses a spray marking device for a hot-dip galvanized steel pipe production line, which mainly includes an operating table, a motor, a rotating block, a track, a tightening block, a protrusion, a bidirectional threaded rod, a knob, an operating frame, an electric push rod, a spray marking device, a spray marking head, a placement seat, a support column, a universal wheel, a fixed plate and a clamping block. Due to the combined use of the tightening block, the protrusion, the bidirectional threaded rod and the knob, the device has relatively good compatibility and can spray marking steel pipes of different specifications, but the device cannot spray marking two steel pipes at the same time. Utility Model Content

[0004] In order to overcome one or more problems existing in the prior art, the utility model provides a device for spraying marks on the outer surface of a steel pipe based on a split type. The utility model is designed based on a symmetrical structure. The combined use of the first bracket and the base plate can realize the positioning setting of the fifth bracket, and the use of the second bracket can realize the relative setting of the fourth bracket; the use of screws can realize the linkage of the linear bearing, the second bracket and the fourth bracket, and can realize the linkage of the support plate and the third bracket; the combined use of the fifth bracket, the fourth bracket and the rolling bearing can realize the rolling of the roller according to a predetermined trajectory, thereby realizing the horizontal movement of the spraying machine; the use of the linear bearing can realize the lifting movement of the third bracket, thereby realizing the lifting movement of the spraying machine; the combined use of the support plate and the third bracket can realize the positioning of the spraying machine, and the use of four spraying machines can realize the simultaneous spraying of the outer surfaces of four parts of two steel pipes. Therefore, the working efficiency of the device of the utility model is relatively high.

[0005] The technical solution adopted by the utility model to solve its technical problem is as follows.

[0006] The utility model provides a device for spraying marking on the outer surface of a steel pipe based on a split type, comprising: eight support plates, four spraying machines, two first brackets, two second brackets, four third brackets, four fourth brackets, one fifth bracket, eighty screws, eight linear bearings, eight rollers, a bottom plate, sixteen rolling bearings, eight screw rods and eight nuts;

[0007] The support plate is a rectangular parallelepiped symmetrical structure, a rectangular parallelepiped first through hole is opened in the middle of the support plate, and the first boss of the marking machine is penetrated in the first through hole; the support plate is symmetrically opened with four cylindrical second through holes, and the screws are penetrated in the second through holes;

[0008] The marking machine is composed of a first body connected with two first bosses, the first body and the first bosses are both rectangular parallelepiped symmetrical structures, and the two first bosses are respectively located on the left and right end surfaces of the first body;

[0009] The first bracket is composed of a second body, a second boss and a third boss connected together, the second body, the second boss and the third boss are all rectangular parallelepiped symmetrical structures, the second boss is located on the upper end surface of the second body, and the third boss is located on the upper end surface of the second boss; the second body is symmetrically provided with four cylindrical third through holes, and the screw is penetrated in the third through holes; the third boss is provided with a rectangular parallelepiped fourth through hole, and the eleventh boss of the fifth bracket is penetrated in the fourth through hole;

[0010] The second bracket is composed of two fourth bodies, two fifth bosses and two sixth bosses connected together, the fourth body, the fifth boss and the sixth boss are all rectangular symmetrical structures, the two fifth bosses are simultaneously located between the two fourth bodies, and the two sixth bosses are simultaneously located on the upper end surface of the fourth body; the fourth body is symmetrically provided with two rectangular fifth through holes, the four seventh bosses of the linear bearing are penetrated in the fifth through hole, and the fifth through hole also penetrates the fifth boss; four first screw holes are evenly provided around the fifth through hole, and the screws are screwed into the first screw holes; the sixth boss is symmetrically provided with four second screw holes, and the screws are screwed into the second screw holes;

[0011] The third bracket is composed of a sixth body, four eighth bosses and four ninth bosses, the sixth body and the ninth boss are both rectangular parallelepiped symmetrical structures, the four eighth bosses are simultaneously located on the upper end surface of the sixth body, and the four ninth bosses are simultaneously located on the lower end surface of the sixth body; the eighth boss is a cylindrical symmetrical structure, which is used to penetrate the seventh through hole of the linear bearing; the ninth boss is symmetrically provided with two third screw holes, and the screws are screwed into the third screw holes;

[0012] The fourth bracket is composed of a seventh body and a tenth boss connected together, the seventh body and the tenth boss are both rectangular parallelepiped symmetrical structures, and the tenth boss is located at the lower end surface of the seventh body; the rear end surface of the seventh body is symmetrically provided with four cylindrical grooves, and the rolling bearing is penetrated in the grooves; the axis position of the groove is provided with an eighth cylindrical through hole, and the roller head of the roller is penetrated in the eighth through hole; the tenth boss is symmetrically provided with four ninth cylindrical through holes, and the screw is penetrated in the ninth through hole;

[0013] The fifth bracket is composed of an eighth body and two eleventh bosses connected together, the eighth body and the eleventh boss are both rectangular parallelepiped symmetrical structures, and the two eleventh bosses are respectively located on the left and right end surfaces of the eighth body;

[0014] The linear bearing is composed of a fifth body and four seventh bosses connected to each other, and the four seventh bosses are simultaneously located on the upper end surface of the fifth body; the fifth body is a rectangular parallelepiped symmetrical structure, and the fifth body is symmetrically provided with four cylindrical sixth through holes, and the screws are penetrated through the sixth through holes; the seventh boss is a cylindrical symmetrical structure, and a cylindrical seventh through hole is provided at the axial position of the seventh boss, and the eighth boss of the third bracket is penetrated through the seventh through hole, and the seventh through hole also runs through the fifth body; a retaining frame, a ball and a retaining ring are also provided inside the seventh boss, and a plurality of the balls are evenly provided inside the retaining frame, and the retaining rings are provided at both ends of the retaining frame;

[0015] The rolling roller is composed of roller heads at both ends and a roller body in the middle, wherein the roller head is a cylindrical symmetrical structure and is used to pass through the rolling bearing; the roller body is a cylindrical symmetrical structure, and an annular roller groove is opened along the circumferential direction of the roller body, and the eighth body of the fifth bracket is passed through the roller groove;

[0016] The bottom plate is a rectangular parallelepiped symmetrical structure, and two groups of eight cylindrical tenth through holes are symmetrically opened on the bottom plate, and the screw rod is passed through the tenth through hole.

[0017] In some embodiments, the screw is composed of a coaxial third body and a fourth boss, the third body and the fourth boss are both cylindrical symmetrical structures, and the fourth boss is located on the right end face of the third body; the end of the fourth boss is provided with a thread for screwing into the first screw hole, the second screw hole of the second bracket or the third screw hole of the third bracket.

[0018] In some embodiments, the nut is screwed onto the threaded end of the screw.

[0019] In some embodiments, the rolling bearing, the screw and the nut are all standard parts.

[0020] The beneficial effects of the utility model are as follows:

[0021] 1) The device for spraying marking on the outer surface of a steel pipe based on the split type provided by the utility model includes eight support plates, four spraying machines, two first brackets, two second brackets, four third brackets, four fourth brackets, one fifth bracket, eighty screws, eight linear bearings, eight rollers, a bottom plate, sixteen rolling bearings, eight screws and eight nuts. Since the materials are common and easy to process and shape, the manufacturing cost of the device of the utility model is relatively low.

[0022] 2) When the utility model is used, assuming that the two second brackets are farthest apart at the beginning, the two steel pipes are simultaneously set at the position opposite to the two second brackets, and the four third brackets are simultaneously moved downward along the thirty-two seventh through holes of the eight linear bearings, and the four spray-painting machines are started to spray the outer surfaces of both ends of the two steel pipes at the same time; the four third brackets are simultaneously moved upward along the thirty-two seventh through holes of the eight linear bearings, and the sixteen roller heads of the eight rollers are simultaneously rotated forward, and when the two second brackets reach the middle position of the two steel pipes, the eight rollers are stopped from rotating, and the four third brackets are simultaneously moved downward along the thirty-two seventh through holes of the eight linear bearings, and the four spray-painting machines are started to spray the outer surface of the middle part of the two steel pipes at the same time. Therefore, the operation of the device of the utility model is relatively simple.

[0023] 3) The utility model is designed based on a symmetrical structure. The combined use of the first bracket and the base plate can realize the positioning setting of the fifth bracket, and the use of the second bracket can realize the relative setting of the fourth bracket; the use of screws can realize the linkage of the linear bearing, the second bracket and the fourth bracket, and the linkage of the support plate and the third bracket; the combined use of the fifth bracket, the fourth bracket and the rolling bearing can realize the rolling of the roller according to a predetermined trajectory, thereby realizing the horizontal movement of the marking machine; the use of linear bearings can realize the lifting movement of the third bracket, thereby realizing the lifting movement of the marking machine; the combined use of the support plate and the third bracket can realize the positioning of the marking machine, and the use of four marking machines can realize the simultaneous marking of the outer surfaces of four parts of two steel pipes. Therefore, the working efficiency of the device of the utility model is relatively high.

[0024] The utility model provides a device for spraying marking on the outer surface of a steel pipe based on a split type, which can achieve the purpose of spraying marking on the outer surfaces of four parts of two steel pipes at the same time. The utility model device has the characteristics of low manufacturing cost, simple operation and high working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the main structure of the device for spraying marking on the outer surface of a steel pipe based on the split type of the utility model when the spraying machine is located at the left and right ends of the steel pipe;

[0026] Figure 2 It is a left-side structural schematic diagram of the split-type device for spraying markings on the outer surface of a steel pipe according to the utility model when the spraying machine is located at the left and right ends of the steel pipe;

[0027] Figure 3 It is a schematic diagram of the main structure of the device for spraying marking on the outer surface of a steel pipe based on the split type of the utility model when the spraying machine is located in the middle of the steel pipe;

[0028] Figure 4It is a schematic diagram of the main structure of the device for spraying marking on the outer surface of a steel pipe based on the split type of the utility model when spraying marking on the left and right ends of the steel pipe;

[0029] Figure 5 It is a schematic diagram of the top view of the structure of the device for spraying marking on the outer surface of a steel pipe based on the split type of the utility model when the spraying machine is located at the left and right ends of the steel pipe;

[0030] Figure 6 It is a left-side structural schematic diagram of the support plate of the utility model;

[0031] Figure 7 This is a schematic diagram of the main structure of the marking machine of the utility model;

[0032] Figure 8 It is a left-side structural schematic diagram of the first bracket of the utility model;

[0033] Fig. 9 It is a schematic diagram of the top view of the structure of the first bracket of the utility model;

[0034] Fig.10 This is a schematic diagram of the main structure of the screw of the utility model;

[0035] Fig.11 This is a schematic diagram of the main structure of the second bracket of the utility model;

[0036] Fig.12 It is a left-side structural schematic diagram of the second bracket of the utility model;

[0037] Fig.13 It is a schematic diagram of the top view of the second bracket of the utility model;

[0038] Fig.14 This is a schematic diagram of the main structure of the linear bearing of the utility model;

[0039] Fig.15 It is a schematic diagram of the top view of the linear bearing of the utility model;

[0040] Fig.16 This is a schematic diagram of the main structure of the third bracket of the utility model;

[0041] Fig.17 It is a left-side structural schematic diagram of the third bracket of the utility model;

[0042] Fig.18 This is a schematic diagram of the main structure of the fourth bracket of the utility model;

[0043] Fig.19 It is a left-side structural schematic diagram of the fourth bracket of the utility model;

[0044] Fig. 20It is a schematic diagram of the top view of the structure of the roller of the utility model;

[0045] Fig.21 It is a top view structural schematic diagram of the fifth bracket of the utility model;

[0046] Fig. 22 It is a schematic diagram of the top view of the bottom plate of the utility model;

[0047] Fig.23 It is a schematic diagram of the forward rotation of the roller of the utility model;

[0048] Fig.24 It is a schematic diagram of the reverse rotation of the roller of the utility model.

[0049] Explanation of the reference numerals: 1-support plate; 101-first through hole; 102-second through hole; 2-spraying machine; 201-first body; 202-first boss; 3-first bracket; 301-second body; 302-second boss; 303-third boss; 304-third through hole; 305-fourth through hole; 4-screw; 401-third body; 402-fourth boss; 5-second bracket; 501-fourth body; 502-fifth boss; 503-sixth boss; 504-fifth through hole; 505-first screw hole; 506-second screw hole; 6-linear bearing; 601-fifth body; 602-fifth Seven bosses; 603-sixth through hole; 604-seventh through hole; 7-third bracket; 701-sixth body; 702-eighth boss; 703-ninth boss; 704-third screw hole; 8-fourth bracket; 801-seventh body; 802-tenth boss; 803-groove; 804-eighth through hole; 805-ninth through hole; 9-roller; 901-roller body; 902-roller head; 903-roller groove; 10-fifth bracket; 1001-eighth body; 1002-eleventh boss; 11-bottom plate; 1101-tenth through hole; 12-rolling bearing; 13-screw; 14-nut; 15-steel pipe. DETAILED DESCRIPTION

[0050] The content of the utility model is described in detail below through examples and drawings. The examples are only used to understand the utility model, but are not intended to limit the content of the utility model.

[0051] Combination Figures 1 to 5As shown, the utility model provides a device for spraying marking on the outer surface of a steel pipe based on a split type, which includes eight support plates 1, four spraying machines 2, two first brackets 3, two second brackets 5, four third brackets 7, four fourth brackets 8, a fifth bracket 10, eighty screws 4, eight linear bearings 6, eight rolling rollers 9, a bottom plate 11, sixteen rolling bearings 12, eight screws 13 and eight nuts 14; wherein, two of the first brackets 3 are relatively arranged on the bottom plate 11, and are connected by the eight screws 13 and the eight nuts 14; two eleventh bosses 1002 of the fifth bracket 10 are penetrated in the two fourth through holes 305 of the two first brackets 3, and the eighth body 1001 of the fifth bracket 10 is penetrated in the eight roller grooves 903 of the eight rolling rollers 9; the sixteen roller heads 902 of the eight rolling rollers 9 are penetrated in the sixteen rolling bearings 12, and the sixteen rolling bearings 12 are penetrated in the four fourth The sixteen grooves 803 of the bracket 8; the four sixth bosses 503 of the two second brackets 5 are inserted between the four tenth bosses 802 of the four fourth brackets 8, and are connected by the sixteen screws 4; the thirty-two seventh bosses 602 of the eight linear bearings 6 are inserted into the four fifth through holes 504 of the two second brackets 5, and are connected by the thirty-two screws 4; the sixteen eighth bosses 702 of the four third brackets 7 are inserted into the thirty-two seventh through holes 604 of the eight linear bearings 6, and the four first bodies 201 of the four marking machines 2 are inserted between the sixteen ninth bosses 703 of the four third brackets 7, and the eight first bosses 202 of the four marking machines 2 are inserted into the eight first through holes 101 of the eight support plates 1; the eight support plates 1 are arranged outside the left and right sixteen end faces of the sixteen ninth bosses 703 of the four third brackets 7, and are connected by the thirty-two screws 4.

[0052] The utility model provides a device for marking the outer surface of a steel pipe based on a split type assembly process

[0053] Combination Figures 1 to 22 As shown, firstly, sixteen rolling bearings 12 are installed in the sixteen grooves 803 of the four fourth brackets 8, and then the four fourth brackets 8 are arranged opposite to each other in pairs, and then the sixteen roller heads 902 at both ends of the eight rollers 9 are inserted into the sixteen rolling bearings 12, so that the four fourth brackets 8, the sixteen rolling bearings 12 and the eight rollers 9 can be assembled;

[0054] Then, the eighth body 1001 of the fifth bracket 10 is inserted into the eight roller grooves 903 of the eight rollers 9, and then the two first brackets 3 are arranged opposite to each other, and then the two eleventh bosses 1002 of the fifth bracket 10 are inserted into the two fourth through holes 305 of the two first brackets 3, so that the eight rollers 9, the fifth bracket 10 and the two first brackets 3 can be assembled;

[0055] Then, two first brackets 3 are simultaneously arranged on the bottom plate 11, and the eight third through holes 304 of the two first brackets 3 are aligned with the eight tenth through holes 1101 of the bottom plate 11, and then eight screw rods 13 are passed through the eight groups of aligned through holes, and then eight nuts 14 are screwed onto the threaded ends of the eight screw rods 13, so that the two first brackets 3 and the bottom plate 11 can be assembled;

[0056] Then, the four sixth bosses 503 of the two second brackets 5 are inserted between the four tenth bosses 802 of the four fourth brackets 8, and the sixteen second screw holes 506 of the two second brackets 5 are aligned with the sixteen ninth through holes 805 of the four fourth brackets 8, and then the sixteen screws 4 are passed through the sixteen ninth through holes 805 and screwed into the sixteen second screw holes 506. In this way, the two second brackets 5 and the four fourth brackets 8 can be assembled by the sixteen screws 4;

[0057] Then, the thirty-two seventh bosses 602 of the eight linear bearings 6 are inserted into the four fifth through holes 504 of the two second brackets 5, and the thirty-two sixth through holes 603 of the eight linear bearings 6 are aligned with the sixteen first screw holes 505 of the two second brackets 5, and then the thirty-two screws 4 are passed through the thirty-two sixth through holes 603 and screwed into the sixteen first screw holes 505. In this way, the eight linear bearings 6 and the two second brackets 5 can be assembled by the thirty-two screws 4;

[0058] Then, the sixteen eighth bosses 702 of the four third brackets 7 are inserted into the thirty-two seventh through holes 604 of the eight linear bearings 6, and then the four first bodies 201 of the four marking machines 2 are inserted between the sixteen ninth bosses 703 of the four third brackets 7, and then the eight first bosses 202 of the four marking machines 2 are inserted into the eight first through holes 101 of the eight support plates 1, and the eight support plates 1 are arranged outside the left and right sixteen end surfaces of the sixteen ninth bosses 703 of the four third brackets 7, and the thirty-two second through holes 102 of the eight support plates 1 and the thirty-two third screw holes 704 of the four third brackets 7 are aligned, and then the thirty-two screws 4 are passed through the thirty-two second through holes 102 and screwed into the thirty-two third screw holes 704. In this way, the whole set of equipment is assembled and can be put into use.

[0059] The utility model provides a setting rule for the rotation direction of the roller of the device for spraying marking on the outer surface of the steel pipe based on the split type

[0060] like Figure 1 and Figure 3 As shown, based on the main structural diagram of the device of the utility model, for the convenience of description, the eight rollers 9 may be defined as ①, ②, ③, ④, ⑤, ⑥, ⑦ and ⑧, wherein the sixteen roller heads 902 of the eight rollers 9 are all rotating shafts;

[0061] like Figure 1 As shown, it is assumed that initially the two second brackets 5 are located at the left and right ends of the two steel pipes 15, respectively. At this time, the two second brackets 5 are farthest apart. After simplification, Fig.23 As shown, the first, second, seventh and eighth rotate in the clockwise direction at the same time, and the third, fourth, fifth and sixth rotate in the counterclockwise direction at the same time, then the two second brackets 5 will approach each other and meet at the middle position of the two steel pipes 15, as shown in FIG. Figure 3 As shown, the rotation direction of the eight rollers 9 may be defined as a positive direction;

[0062] like Figure 3 As shown, it is assumed that initially the two second brackets 5 are simultaneously located in the middle of the two steel pipes 15, and the two second brackets 5 are closest to each other at this time. Fig.24 As shown, the first, second, seventh and eighth are rotated in the counterclockwise direction at the same time, and the third, fourth, fifth and sixth are rotated in the clockwise direction at the same time, then the two second brackets 5 will move away from each other and reach the left and right ends of the two steel pipes 15, as shown in FIG. Figure 1 As shown, the rotation direction of the eight rollers 9 may be defined as reverse rotation.

[0063] The utility model provides a method for using a device for spraying marking on the outer surface of a steel pipe based on a split type

[0064] Step 1: Assuming that the two second brackets 5 are farthest apart at the beginning, then the two steel pipes 15 are simultaneously set at the positions facing the two second brackets 5. At this time, the four marking machines 2 are just located above the four ends of the two steel pipes 15. Figure 1 and Figure 2 As shown;

[0065] Step 2: Then, along the thirty-two seventh through holes 604 of the eight linear bearings 6, the four third brackets 7 are simultaneously moved downward so as to bring the four marking machines 2 close to the outer surfaces of the two steel pipes 15, and then the four marking machines 2 are started to simultaneously mark the outer surfaces of the four locations at both ends of the two steel pipes 15, as shown in FIG. Figure 4 and Figure 5 As shown;

[0066] Step 3: Then, along the thirty-two seventh through holes 604 of the eight linear bearings 6, four third brackets 7 are moved upward at the same time, and then the sixteen roller heads 902 of the eight rollers 9 are rotated forward at the same time. When two of the second brackets 5 reach the middle position of the two steel pipes 15, the rotation of the eight rollers 9 is stopped. Figure 3 As shown, the operation of step 2 is then repeated to spray marks on the outer surfaces of four locations between the two steel pipes 15 at the same time.

[0067] Supplementary explanation: The device for spraying marking on the outer surface of a steel pipe based on the split type provided by the utility model is designed with a symmetrical structure. First, according to the outer diameter specification of the steel pipe, the spacing between two steel pipes, the setting height of the steel pipe and the fixed length of the steel pipe, multiple specifications of the utility model device should be designed and manufactured to match it.

[0068] It can be seen from the embodiments that the device for spraying marking on the outer surface of a steel pipe based on the split type provided by the utility model can achieve the purpose of simultaneously spraying marking on the outer surfaces of four parts of two steel pipes. The device of the utility model has the characteristics of low manufacturing cost, simple operation and high working efficiency.

[0069] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein.

Claims

1. A device for spraying marking on the outer surface of a steel pipe based on a split type, characterized in that: The device for spraying marking on the outer surface of a steel pipe based on the split type comprises: eight support plates (1), four spraying machines (2), two first brackets (3), two second brackets (5), four third brackets (7), four fourth brackets (8), one fifth bracket (10), eighty screws (4), eight linear bearings (6), eight rollers (9), a bottom plate (11), sixteen rolling bearings (12), eight screw rods (13) and eight nuts (14), wherein: The support plate (1) is a rectangular parallelepiped symmetrical structure, a rectangular parallelepiped first through hole (101) is provided in the middle of the support plate (1), a first boss (202) of the marking machine (2) is inserted into the first through hole (101); four cylindrical second through holes (102) are symmetrically provided on the support plate (1), the screws (4) are inserted into the second through holes (102); The marking machine (2) is composed of a first body (201) and two first bosses (202) connected together, the first body (201) and the first bosses (202) are both rectangular parallelepiped symmetrical structures, and the two first bosses (202) are respectively located on the left and right end surfaces of the first body (201); The first bracket (3) is composed of a second body (301), a second boss (302) and a third boss (303) connected together; the second body (301), the second boss (302) and the third boss (303) are all rectangular parallelepiped symmetrical structures; the second boss (302) is located on the upper end surface of the second body (301), and the third boss (303) is located on the upper end surface of the second boss (302); the second body (301) is symmetrically provided with four cylindrical third through holes (304), and the screw rod (13) is passed through the third through holes (304); the third boss (303) is provided with a rectangular parallelepiped fourth through hole (305), and the eleventh boss (1002) of the fifth bracket (10) is passed through the fourth through hole (305); The second bracket (5) is composed of two fourth bodies (501), two fifth bosses (502) and two sixth bosses (503) connected together; the fourth body (501), the fifth boss (502) and the sixth boss (503) are all rectangular parallelepiped symmetrical structures; the two fifth bosses (502) are simultaneously located between the two fourth bodies (501); the two sixth bosses (503) are simultaneously located on the upper end surface of the fourth body (501); the fourth body (501) is symmetrically provided with two rectangular parallelepiped symmetrical structures; A fifth through hole (504) is formed, wherein four seventh bosses (602) of the linear bearing (6) are penetrated in the fifth through hole (504), and the fifth through hole (504) also penetrates the fifth boss (502); four first screw holes (505) are evenly formed around the fifth through hole (504), wherein the screws (4) are screwed into the first screw holes (505); four second screw holes (506) are symmetrically formed on the sixth boss (503), wherein the screws (4) are screwed into the second screw holes (506); The third bracket (7) is composed of a sixth body (701), four eighth bosses (702) and four ninth bosses (703) connected together; the sixth body (701) and the ninth boss (703) are both rectangular parallelepiped symmetrical structures; the four eighth bosses (702) are simultaneously located on the upper end surface of the sixth body (701); the four ninth bosses (703) are simultaneously located on the lower end surface of the sixth body (701); the eighth boss (702) is a cylindrical symmetrical structure, and is used to penetrate the seventh through hole (604) of the linear bearing (6); the ninth boss (703) is symmetrically provided with two third screw holes (704), and the screws (4) are screwed into the third screw holes (704); The fourth bracket (8) is composed of a seventh body (801) and a tenth boss (802) connected together, the seventh body (801) and the tenth boss (802) are both rectangular parallelepiped symmetrical structures, and the tenth boss (802) is located on the lower end surface of the seventh body (801); the rear end surface of the seventh body (801) is symmetrically provided with four cylindrical grooves (803), and the rolling bearing (12) is penetrated in the grooves (803); the axial position of the groove (803) is provided with a cylindrical eighth through hole (804), and the roller head (902) of the rolling roller (9) is penetrated in the eighth through hole (804); the tenth boss (802) is symmetrically provided with four cylindrical ninth through holes (805), and the screw (4) is penetrated in the ninth through hole (805); The fifth bracket (10) is composed of an eighth body (1001) and two eleventh bosses (1002) connected together, the eighth body (1001) and the eleventh boss (1002) are both rectangular parallelepiped symmetrical structures, and the two eleventh bosses (1002) are respectively located on the left and right end surfaces of the eighth body (1001); The linear bearing (6) is composed of a fifth body (601) and four seventh bosses (602) connected together, and the four seventh bosses (602) are simultaneously located on the upper end surface of the fifth body (601); the fifth body (601) is a rectangular parallelepiped symmetrical structure, and the fifth body (601) is symmetrically provided with four cylindrical sixth through holes (603), and the screws (4) are passed through the sixth through holes (603); the seventh boss (602) is a cylindrical The seventh boss (602) has a symmetrical structure, a cylindrical seventh through hole (604) is provided at the axial position of the seventh boss (602), the eighth boss (702) of the third bracket (7) is penetrated in the seventh through hole (604), and the seventh through hole (604) also penetrates the fifth body (601); a retaining frame, a ball and a retaining ring are also provided in the seventh boss (602), a plurality of the balls are evenly arranged in the retaining frame, and the retaining rings are provided at both ends of the retaining frame; The rolling roller (9) is composed of roller heads (902) at both ends and a roller body (901) in the middle, wherein the roller head (902) is a cylindrical symmetrical structure and is used to pass through the rolling bearing (12); the roller body (901) is a cylindrical symmetrical structure, and an annular roller groove (903) is provided along the circumferential direction of the roller body (901), and the eighth body (1001) of the fifth bracket (10) is passed through the roller groove (903); The bottom plate (11) is a rectangular parallelepiped symmetrical structure. The bottom plate (11) is symmetrically provided with two groups of eight cylindrical tenth through holes (1101) in total. The screw rod (13) is passed through the tenth through hole (1101).

2. The device for spraying marking on the outer surface of a steel pipe based on the split type according to claim 1 is characterized in that: The screw (4) is composed of a coaxial third body (401) and a fourth boss (402), the third body (401) and the fourth boss (402) are both cylindrical symmetrical structures, and the fourth boss (402) is located on the right end surface of the third body (401); the end of the fourth boss (402) is provided with a thread for screwing into the first screw hole (505), the second screw hole (506) of the second bracket (5) or the third screw hole (704) of the third bracket (7).

3. The device for spraying marking on the outer surface of a steel pipe based on the split type according to claim 1 or 2, characterized in that: The threaded end of the screw rod (13) is screwed with the nut (14).

4. The device for spraying marking on the outer surface of a steel pipe based on the split type according to claim 1 or 2, characterized in that: The rolling bearing (12), the screw rod (13) and the nut (14) are all standard parts.

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