Laser cutting device for building roof big character manufacturing

Abstract

The invention discloses a laser cutting device for roof big character manufacturing, and relates to the technical field of roof big character manufacturing, the laser cutting device comprises a rack body, a supporting seat and a laser cutter body, and further comprises a bearing toothed plate, a fixing mechanism and a plate positioning mechanism; the plate positioning mechanism comprises a sliding groove, a sliding block, a fixed block assembly, a sliding rod, a U-shaped block, a positioning plate, an overturning assembly and a fixed rod assembly. The position of the positioning plate is adjusted according to the length of the plate, the overturning assembly drives the positioning plate to rotate to the vertical state, the sliding rod slides, the positioning plate is driven to move to abut against the plate, the plate is positioned, and the positioning rod assembly fixes the position of the positioning plate.

Description

Technical Field

[0001] The invention relates to the technical field of large-character production on roofs, in particular to a laser cutting device for producing large-character production on roofs. Background Art

[0002] There are two types of large characters on the roof: luminous characters and non-luminous characters. Luminous characters are divided into plastic characters and LED exposed light luminous characters. Non-luminous characters are divided into titanium characters, stainless steel characters, and paint characters according to the material. Large characters on the roof are large advertising characters composed of steel structure support frames and metal characters. The steel frame is generally made of (galvanized) angle iron welded into a ladder or square cage. The luminous characters on the roof are made of stainless steel plates or galvanized plates as the shell, with built-in LED modules, and the plastic characters are made of acrylic plates. LED exposed light luminous characters are punched on the metal plate, then cut into shape with a laser, and finally welded into characters, installed with lights, and fixed on the steel frame.

[0003] During the laser cutting process, the plate is usually placed flat on the base, and the friction between the plate and the base keeps the plate on the base. When the machine body or the plate is subjected to external force, the plate is easily moved on the base, so the plate needs to be repositioned. Since the metal plate used for large roof characters is large, the positioning operation time is long, which affects the overall cutting efficiency. Therefore, a laser cutting device for large roof characters is urgently needed to solve the above problems. Summary of the invention

[0004] The purpose of the embodiment of the present invention is to provide a laser cutting device for producing large characters on the roof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A laser cutting device for making large characters on a roof, comprising a frame body, a support base is provided at the bottom of the frame body, a laser cutter body is movably provided on the frame body, and further comprising:

[0007] The load-bearing tooth plate is located inside the frame body and is provided with a plurality of groups for bearing and supporting the plate;

[0008] A fixing mechanism, one end of which is connected to the load-bearing tooth plate and the other end of which is connected to the frame body, and is used to fix the load-bearing tooth plate;

[0009] The plate positioning mechanism is connected to the frame body, and the plate positioning mechanism is provided with a plurality of groups for positioning the plate. The plate positioning mechanism comprises:

[0010] A slide groove is provided on the side wall of the frame body, and two groups of the slide grooves are provided and are symmetrically arranged;

[0011] A sliding block is slidably engaged with the sliding groove, and a limiting protrusion is provided inside the sliding block;

[0012] A fixed block assembly, one end of which is connected to the sliding block and the other end of which is in contact with the frame body, for positioning the sliding block;

[0013] A sliding rod passes through the sliding block and is slidably connected thereto, wherein the sliding rod is provided with a limiting sliding groove matching the limiting protrusion;

[0014] A U-shaped block, the U-shaped block is located inside the frame body and connected to one end of the sliding rod;

[0015] A positioning plate, one end of which is rotatably connected to the U-shaped block;

[0016] A flip assembly, one end of which is connected to the positioning plate and the other end of which is connected to the sliding rod, and is used to drive the positioning plate to rotate around the U-shaped block;

[0017] The fixed rod assembly has one end connected to the fixed block assembly and the other end abuts against the sliding rod, so as to position the sliding rod.

[0018] As a further solution of the present invention: the fixing mechanism comprises:

[0019] A card slot is provided on the frame body;

[0020] A clamping block is slidably engaged with the clamping slot and connected with the bearing tooth plate;

[0021] A fixed folding rod is abutted against the top of the frame body and the top of the card block, and is used to fix the card block;

[0022] The limiting component has one end connected to the frame body and the other end connected to the fixed folding rod.

[0023] As a further solution of the present invention: the limiting component includes:

[0024] A rotating folding rod, one end of which is rotatably connected to the fixed folding rod;

[0025] A clamping folding rod is slidably connected with the rotating folding rod;

[0026] The first elastic member is arranged inside the clamping folding rod, and one end of the elastic member is connected to the clamping folding rod, and the other end of the elastic member is connected to the other end of the rotating folding rod;

[0027] An arc groove is provided on the frame body, and the clamping folding rod is movably clamped inside the arc groove;

[0028] The bottom of the arc groove is a straight groove, the top of the arc groove is a circular groove, and a connecting inclined groove is provided between the circular groove and the straight groove. When the folding rod is engaged with the straight groove, the elastic member is in a stretched state, and when the folding rod is engaged with the circular groove, the elastic member is in a relaxed state.

[0029] As a further solution of the present invention: the stator assembly comprises:

[0030] A fixed threaded sleeve connected to the sliding block and internally connected thereto;

[0031] Rotate the threaded sleeve to be threadedly connected with the fixed threaded sleeve;

[0032] The abutting ring plate is connected with the rotating threaded sleeve and abuts against the frame body.

[0033] As a further solution of the present invention: the flip assembly includes:

[0034] A threaded rod, threadedly connected to the sliding rod;

[0035] A rotating slider is located inside the sliding rod and is slidably connected thereto, and one side of the rotating slider is rotatably connected to the threaded rod;

[0036] A connecting rope, one end of which is connected to the other side of the rotating slider, and the other end of which passes through the top of the sliding rod and is connected to the positioning plate;

[0037] A limit folding rod is connected to the bottom of the positioning plate, and the rotation axis of the limit folding rod coincides with the rotation axis of the positioning plate;

[0038] A scroll spring, one end of which is connected to the limit folding rod;

[0039] The fixed cylinder is connected to the U-shaped block, the center line of the fixed cylinder coincides with the rotation axis of the positioning plate, and the inner wall of the fixed cylinder is connected to the other end of the spiral spring.

[0040] As a further solution of the present invention: the fixed rod assembly comprises:

[0041] A rotating ring, rotatably connected to the fixed threaded sleeve;

[0042] A connecting folding rod, one end of which is connected to the rotating ring;

[0043] A connecting sleeve connected to the other end of the connecting folding rod;

[0044] Penetrating the slide bar, penetrating the connecting sleeve, and being slidably connected thereto;

[0045] An abutting arc block is connected to one end of the penetrating sliding rod close to the sliding rod and abuts against the sliding rod, and the abutting arc block matches the shape of the limiting sliding groove;

[0046] The second elastic member is sleeved on the penetrating sliding rod, and one end of the elastic member is connected to the connecting sleeve, and the other end is connected to the abutting arc block.

[0047] As a further solution of the present invention: also include:

[0048] Limit rod 1, connected with the fixed cylinder;

[0049] Limit rod 2, connected to the fixed cylinder;

[0050] When the limit folding rod abuts against the limit rod 1, the positioning plate is in an inclined state; when the limit folding rod abuts against the limit rod 2, the positioning plate is in a vertical state.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] 1. The present invention can quickly install the load-bearing tooth plate through the arrangement of the clamping block and the clamping groove, and is convenient for disassembly and replacement. The fixed folding rod is quickly fixed through the arranged arc groove, the rotating folding rod, the clamping folding rod and the elastic member, so as to position the load-bearing tooth plate;

[0053] 2. The present invention freely adjusts the position of the positioning plate by means of the sliding block and the sliding groove. When positioning, the positioning plate is flipped up to a vertical state, and the sliding rod is slid horizontally so that the positioning plate abuts against the plate to position the plate. The positioning step is convenient to operate, and plates of different sizes and shapes can be positioned. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 The figure is a schematic structural diagram of a laser cutting device for producing large characters on a roof according to an embodiment of the present invention.

[0055] Figure 2 It is a schematic diagram of the structural disassembly of the fixing mechanism in an embodiment of the present invention.

[0056] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at point A in the middle.

[0057] Figure 4 Schematic diagram of the structure of the plate positioning mechanism in an embodiment of the present invention.

[0058] Figure 5 It is a cross-sectional view of the plate positioning mechanism in an embodiment of the present invention.

[0059] Figure 6 for Figure 4 A magnified schematic diagram of the structure at point B in the middle.

[0060] Figure 7 It is a partial structural schematic diagram of the plate positioning mechanism in an embodiment of the present invention.

[0061] Figure 8 It is a schematic diagram of the structural disassembly of the plate positioning mechanism in an embodiment of the present invention.

[0062] Fig. 9 Schematic diagram of the structure of the fixed rod assembly in an embodiment of the present invention.

[0063] In the figure: 1-frame body; 2-support seat; 3-laser cutter body; 4-bearing tooth plate; 5-fixing mechanism; 6-plate positioning mechanism; 7-limiting rod 1; 8-limiting rod 2; 51-slot; 52-block; 53-fixed folding rod; 54-limiting assembly; 541-arc slot; 542-rotating folding rod; 543-clamping folding rod; 544-elastic member 1; 61-slide slot; 62-sliding block; 63-fixed block assembly; 64-sliding rod; 65-flip Assembly; 66-positioning plate; 67-fixed rod assembly; 68-U-shaped block; 631-fixed threaded sleeve; 632-rotating threaded sleeve; 633-abutment ring plate; 651-threaded rod; 652-rotating slider; 653-connecting rope; 654-limiting folding rod; 655-volute spring; 656-fixed cylinder; 671-rotating ring; 672-connecting folding rod; 673-connecting sleeve; 674-through sliding rod; 675-abutment arc block; 676-elastic member two. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] In the embodiment of the present invention, please refer to Figures 1 to 9 A laser cutting device for making large characters on a roof, comprising a frame body 1, a support base 2 is provided at the bottom of the frame body 1, a laser cutter body 3 is movably provided on the frame body 1, and further comprising:

[0066] The load-bearing tooth plate 4 is located inside the frame body 1 and is provided with a plurality of groups for bearing and supporting the plate;

[0067] A fixing mechanism 5, one end of which is connected to the load-bearing tooth plate 4, and the other end of which is connected to the frame body 1, for fixing the load-bearing tooth plate 4;

[0068] The plate positioning mechanism 6 is connected to the frame body 1. The plate positioning mechanism 6 is provided with a plurality of groups for positioning the plate. The plate positioning mechanism 6 includes:

[0069] The slide grooves 61 are provided on the side wall of the frame body 1, and the slide grooves 61 are provided in two groups and are symmetrically arranged;

[0070] The sliding block 62 is slidably engaged with the sliding groove 61, and a limiting protrusion is provided inside the sliding block 62;

[0071] A fixed block assembly 63, one end of which is connected to the sliding block 62 and the other end of which is in contact with the frame body 1, for positioning the sliding block 62;

[0072] The sliding rod 64 passes through the sliding block 62 and is slidably connected thereto. The sliding rod 64 is provided with a limiting sliding groove matching the limiting protrusion;

[0073] A U-shaped block 68, which is located inside the frame body 1 and connected to one end of the sliding rod 64;

[0074] A positioning plate 66, one end of which is rotatably connected to the U-shaped block 68;

[0075] The flip assembly 65 has one end connected to the positioning plate 66 and the other end connected to the sliding rod 64, and is used to drive the positioning plate 66 to rotate around the U-shaped block 68;

[0076] The fixed rod assembly 67 has one end connected to the fixed block assembly 63 and the other end abutting against the sliding rod 64 for positioning the sliding rod 64 .

[0077] The plate is placed on the bearing tooth plate 4, and the position of the sliding block 62 is adjusted according to the length of the plate. After the adjustment is completed, the sliding block 62 is positioned by the fixed block assembly 63. In the initial state, the positioning plate 66 is in an inclined state. When positioning, the flip assembly 65 drives the positioning plate 66 to rotate around the U-shaped block 68, so that the positioning plate 66 rotates to a vertical state, and the sliding rod 64 is slid according to the width of the plate, so that the positioning plate 66 moves to abut against the plate, and the plate is positioned and fixed. The fixed rod assembly 67 fixes the sliding rod 64, and the laser cutter body 3 performs laser cutting on the plate to make large characters on the roof;

[0078] When the load-bearing tooth plate 4 needs to be replaced, the position restriction of the load-bearing tooth plate 4 by the fixing mechanism 5 is released, and the load-bearing tooth plate 4 is taken out for replacement.

[0079] As an embodiment of the present invention, please refer to Figures 1 to 3 , the fixing mechanism 5 comprises:

[0080] The card slot 51 is provided on the frame body 1;

[0081] The clamping block 52 is slidably engaged with the clamping slot 51 and connected to the bearing tooth plate 4;

[0082] The fixed folding rod 53 abuts against the top of the frame body 1 and the top of the clamping block 52, and is used to fix the clamping block 52;

[0083] The limiting component 54 has one end connected to the frame body 1 and the other end connected to the fixed folding rod 53 .

[0084] The clamping block 52 is clamped with the clamping slot 51 to fix the bearing tooth plate 4 . The fixing folding rod 53 abuts against the clamping block 52 to fix the clamping block 52 , thereby fixing the bearing tooth plate 4 . The limiting component 54 fixes the fixing folding rod 53 .

[0085] As an embodiment of the present invention, please refer to Figures 1 to 3 , the limiting component 54 includes:

[0086] A rotating folding rod 542, one end of which is rotatably connected to the fixed folding rod 53;

[0087] The clamping folding rod 543 is slidably connected with the rotating folding rod 542;

[0088] The elastic member 1 544 is disposed inside the clamping folding rod 543, and one end of the elastic member 544 is connected to the clamping folding rod 543, and the other end of the elastic member 544 is connected to the other end of the rotating folding rod 542;

[0089] The arc groove 541 is provided on the frame body 1, and the snap-fitting folding rod 543 is snap-fitted in the arc groove 541;

[0090] The bottom of the arc groove 541 is a straight groove, and the top of the arc groove 541 is a circular groove. A connecting inclined groove is provided between the circular groove and the straight groove. When the folding rod 543 is engaged with the straight groove, the elastic member 544 is in a stretched state. When the folding rod 543 is engaged with the circular groove, the elastic member 544 is in a relaxed state.

[0091] When the fixed folding rod 53 is fixed, the rotating folding rod 542 is rotated to drive the clamping folding rod 543 to rotate synchronously, and the clamping folding rod 543 moves along the arc groove 541. When the clamping folding rod 543 rotates to clamp with the linear groove at the bottom of the arc groove 541, the elastic member 1 544 is in a stretched state, and the fixed folding rod 53 is fixed under the action of the elastic member 1 544.

[0092] When the fixed folding rod 53 needs to be released, the rotating folding rod 542 is rotated to make the clamping folding rod 543 disengage from the linear groove, thereby releasing the fixed folding rod 53, thereby facilitating the removal of the bearing tooth plate 4 for cleaning or replacement. The elastic member 544 can be a spring, a spring sheet, etc.

[0093] As an embodiment of the present invention, please refer to Figure 1 , Figure 4 , Figure 5 , Figure 7 and Figure 8 , the stator assembly 63 comprises:

[0094] A fixed threaded sleeve 631 is connected to the sliding block 62 and is internally connected thereto;

[0095] The rotating threaded sleeve 632 is threadedly connected with the fixed threaded sleeve 631;

[0096] The abutting ring plate 633 is connected to the rotating threaded sleeve 632 and abuts against the frame body 1 .

[0097] The sliding block 62 is slid along the sliding groove 61, and the position of the positioning plate 66 is adjusted according to the length of the plate. After the adjustment is completed, the rotating threaded sleeve 632 is rotated, and the rotating threaded sleeve 632 drives the abutting ring plate 633 to move along the fixed threaded sleeve 631, so that the abutting ring plate 633 abuts against the frame body 1, and the sliding block 62 is fixed and limited.

[0098] As an embodiment of the present invention, please refer to Figure 1 , Figures 4 to 8 , the flip assembly 65 includes:

[0099] The threaded rod 651 is threadedly connected to the sliding rod 64;

[0100] The rotating slider 652 is located inside the sliding rod 64 and is slidably connected thereto. One side of the rotating slider 652 is rotatably connected to the threaded rod 651.

[0101] A connecting rope 653, one end of which is connected to the other side of the rotating slider 652, and the other end of which passes through the top of the sliding rod 64 and is connected to the positioning plate 66;

[0102] The limiting folding rod 654 is connected to the bottom of the positioning plate 66, and the rotation axis of the limiting folding rod 654 coincides with the rotation axis of the positioning plate 66;

[0103] A scroll spring 655, one end of which is connected to the limit folding rod 654;

[0104] The fixed cylinder 656 is connected to the U-shaped block 68 , the center line of the fixed cylinder 656 coincides with the rotation axis of the positioning plate 66 , and the inner wall of the fixed cylinder 656 is connected to the other end of the spiral spring 655 .

[0105] In the initial state, the positioning plate 66 is in an inclined state. When the plate needs to be positioned and fixed, the threaded rod 651 is rotated, and the threaded rod 651 drives the rotating slider 652 to move horizontally. The rotating slider 652 drives the connecting rope 653 to move. The connecting rope 653 pulls the positioning plate 66 to rotate and pulls the positioning plate 66 to a vertical state. The setting of the spiral spring 655 ensures that the positioning plate 66 can return to its original position.

[0106] As an embodiment of the present invention, please refer to Figure 1 , Figure 4 , Figure 5 , Figure 7 , Figure 8 and Fig. 9 , the fixed rod assembly 67 comprises:

[0107] The rotating ring 671 is rotatably connected to the fixed threaded sleeve 631;

[0108] A connecting folding rod 672, one end of which is connected to the rotating ring 671;

[0109] A connecting sleeve 673 connected to the other end of the connecting folding rod 672;

[0110] Penetrating the slide bar 674, penetrating the connecting sleeve 673, and being slidably connected thereto;

[0111] The abutting arc block 675 is connected to one end of the penetrating sliding rod 674 close to the sliding rod 64 and abuts against the sliding rod 64. The abutting arc block 675 matches the shape of the limiting sliding groove;

[0112] The second elastic member 676 is sleeved on the penetrating sliding rod 674 , and one end is connected to the connecting sleeve 673 , and the other end is connected to the abutting arc block 675 .

[0113] In the initial state, the abutting arc block 675 abuts against the limiting sliding groove, and the sliding rod 64 can slide. After the positioning plate 66 is rotated to stand up, the sliding rod 64 is slid according to the width of the plate, and the sliding rod 64 moves along the sliding block 62, driving the positioning plate 66 to move, so that the positioning plate 66 abuts against the plate, and the connecting sleeve 673 is rotated. The connecting sleeve 673 drives the abutting arc block 675 to rotate, so that the abutting arc block 675 abuts against the arc segment of the sliding rod 64, and the elastic member 676 is deformed. Under the reaction force of the elastic member 676, the abutting arc block 675 fixes the sliding rod 64. The elastic member 676 can be a spring, a spring sheet, etc.

[0114] As an embodiment of the present invention, please refer to Figure 4 , Figure 6 and Figure 8 , also includes:

[0115] Limit rod 7, connected to the fixed cylinder 656;

[0116] The limiting rod 28 is connected to the fixing cylinder 656;

[0117] When the limit folding rod 654 abuts against the limit rod 1 7, the positioning plate 66 is in an inclined state; when the limit folding rod 654 abuts against the limit rod 2 8, the positioning plate 66 is in a vertical state.

[0118] In the initial state, the limit folding rod 654 is in contact with the limit rod 1 7, the positioning plate 66 is in an inclined state, and the highest point is located at the bottom of the bearing tooth plate 4. When the positioning plate 66 rotates, the positioning plate 66 drives the limit folding rod 654 to rotate synchronously, so that the limit folding rod 654 rotates to abut against the limit rod 2 8. At this time, the positioning plate 66 cannot continue to rotate, and the positioning plate 66 is in a vertical state, and the highest point is located at the top of the bearing tooth plate 4. The limit rod 2 8 limits the limit folding rod 654, thereby limiting the positioning plate 66.

[0119] The working principle of the present invention is: the clamping block 52 is clamped together with the clamping groove 51, so as to fix the load-bearing tooth plate 4; the fixed folding rod 53 is in contact with the clamping block 52, so as to fix the clamping block 52, so as to fix the load-bearing tooth plate 4; the rotating folding rod 542 is rotated to drive the clamping folding rod 543 to rotate synchronously; the clamping folding rod 543 moves along the arc groove 541; when the clamping folding rod 543 rotates to clamp with the linear groove at the bottom of the arc groove 541, the elastic member 1 544 is in a stretched state, and the fixed folding rod 53 is fixed under the action of the elastic member 1 544;

[0120] In the initial state, the limit folding rod 654 abuts against the limit rod 7, the positioning plate 66 is in an inclined state, and the highest point is located at the bottom of the bearing tooth plate 4, the abutting arc block 675 abuts against the limit sliding groove, and the sliding rod 64 can slide;

[0121] The plate is placed on the bearing tooth plate 4, and the sliding block 62 is slid along the slide groove 61. The position of the positioning plate 66 is adjusted according to the length of the plate. After the adjustment is completed, the rotating threaded sleeve 632 is rotated, and the rotating threaded sleeve 632 drives the abutting ring plate 633 to move along the fixed threaded sleeve 631, so that the abutting ring plate 633 abuts against the frame body 1, and the sliding block 62 is fixed and limited. The threaded rod 651 is rotated, and the threaded rod 651 drives the rotating slider 652 to move horizontally. The rotating slider 652 drives the connecting rope 653 to move. The connecting rope 653 pulls the positioning plate 66 to rotate, and the positioning plate 66 is pulled to a vertical state. The positioning plate 66 drives The limiting folding rod 654 rotates synchronously, so that the limiting folding rod 654 rotates to abut against the limiting rod 2 8. At this time, the positioning plate 66 cannot continue to rotate. After the positioning plate 66 is rotated to be upright, the sliding rod 64 is slid according to the width of the plate. The sliding rod 64 moves along the sliding block 62, driving the positioning plate 66 to move, so that the positioning plate 66 abuts against the plate, and the connecting sleeve 673 is rotated. The connecting sleeve 673 drives the abutting arc block 675 to rotate, so that the abutting arc block 675 abuts against the circular arc segment of the sliding rod 64, and the elastic member 2 676 is deformed. Under the reaction force of the elastic member 2 676, the abutting arc block 675 fixes the sliding rod 64.

[0122] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0123] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A laser cutting device for making large characters on the roof, comprising a frame body, a support base is provided at the bottom of the frame body, and a laser cutter body is movably provided on the frame body, characterized in that: Also includes: The load-bearing tooth plate is located inside the frame body and is provided with a plurality of groups for bearing and supporting the plate; A fixing mechanism, one end of which is connected to the load-bearing tooth plate and the other end of which is connected to the frame body, and is used to fix the load-bearing tooth plate; The plate positioning mechanism is connected to the frame body, and the plate positioning mechanism is provided with a plurality of groups for positioning the plate. The plate positioning mechanism comprises: A slide groove is provided on the side wall of the frame body, and two groups of the slide grooves are provided and are symmetrically arranged; A sliding block is slidably engaged with the sliding groove, and a limiting protrusion is provided inside the sliding block; A fixed block assembly, one end of which is connected to the sliding block and the other end of which is in contact with the frame body, for positioning the sliding block; A sliding rod passes through the sliding block and is slidably connected thereto, wherein the sliding rod is provided with a limiting sliding groove matching the limiting protrusion; A U-shaped block, the U-shaped block is located inside the frame body and connected to one end of the sliding rod; A positioning plate, one end of which is rotatably connected to the U-shaped block; A flip assembly, one end of which is connected to the positioning plate and the other end of which is connected to the sliding rod, and is used to drive the positioning plate to rotate around the U-shaped block; The fixed rod assembly has one end connected to the fixed block assembly and the other end abuts against the sliding rod, so as to position the sliding rod.

2. The laser cutting device for producing large characters on the roof of a building according to claim 1 is characterized in that: The fixing mechanism comprises: A card slot is provided on the frame body; A clamping block is slidably engaged with the clamping slot and connected with the bearing tooth plate; A fixed folding rod is abutted against the top of the frame body and the top of the card block, and is used to fix the card block; The limiting component has one end connected to the frame body and the other end connected to the fixed folding rod.

3. The laser cutting device for producing large characters on the roof of a building according to claim 2, characterized in that: The limiting components include: A rotating folding rod, one end of which is rotatably connected to the fixed folding rod; A clamping folding rod is slidably connected with the rotating folding rod; The first elastic member is arranged inside the clamping folding rod, and one end of the elastic member is connected to the clamping folding rod, and the other end of the elastic member is connected to the other end of the rotating folding rod; An arc groove is provided on the frame body, and the clamping folding rod is movably clamped inside the arc groove; The bottom of the arc groove is a straight groove, the top of the arc groove is a circular groove, and a connecting inclined groove is provided between the circular groove and the straight groove. When the folding rod is engaged with the straight groove, the elastic member is in a stretched state, and when the folding rod is engaged with the circular groove, the elastic member is in a relaxed state.

4. The laser cutting device for producing large characters on the roof of a building according to claim 1, characterized in that: The stator block assembly comprises: A fixed threaded sleeve connected to the sliding block and internally connected thereto; Rotate the threaded sleeve to be threadedly connected with the fixed threaded sleeve; The abutting ring plate is connected with the rotating threaded sleeve and abuts against the frame body.

5. The laser cutting device for producing large characters on the roof of a building according to claim 1, characterized in that: The flip assembly comprises: A threaded rod, threadedly connected to the sliding rod; A rotating slider is located inside the sliding rod and is slidably connected thereto, and one side of the rotating slider is rotatably connected to the threaded rod; A connecting rope, one end of which is connected to the other side of the rotating slider, and the other end of which passes through the top of the sliding rod and is connected to the positioning plate; A limit folding rod is connected to the bottom of the positioning plate, and the rotation axis of the limit folding rod coincides with the rotation axis of the positioning plate; A scroll spring, one end of which is connected to the limit folding rod; The fixed cylinder is connected to the U-shaped block, the center line of the fixed cylinder coincides with the rotation axis of the positioning plate, and the inner wall of the fixed cylinder is connected to the other end of the spiral spring.

6. The laser cutting device for producing large characters on the roof of a building according to claim 4, characterized in that: The fixed rod assembly comprises: A rotating ring, rotatably connected to the fixed threaded sleeve; A connecting folding rod, one end of which is connected to the rotating ring; A connecting sleeve connected to the other end of the connecting folding rod; Penetrating the slide bar, penetrating the connecting sleeve, and being slidably connected thereto; An abutting arc block is connected to one end of the penetrating sliding rod close to the sliding rod and abuts against the sliding rod, and the abutting arc block matches the shape of the limiting sliding groove; The second elastic member is sleeved on the penetrating sliding rod, and one end of the elastic member is connected to the connecting sleeve, and the other end is connected to the abutting arc block.

7. The laser cutting device for producing large characters on the roof of a building according to claim 5, characterized in that: Also includes: A limiting rod 1, connected to the fixing cylinder; Limit rod 2, connected to the fixed cylinder; When the limit folding rod abuts against the limit rod 1, the positioning plate is in an inclined state; when the limit folding rod abuts against the limit rod 2, the positioning plate is in a vertical state.

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