Handheld cutting device convenient to use

Abstract

The invention discloses a handheld cutting device convenient to use, and relates to the technical field of furniture production, the handheld cutting device convenient to use comprises a device main body, a base, a placement seat, a mounting seat, a mounting frame and a cutting blade, an air box is mounted in the mounting seat, an air suction pipe is mounted at an air inlet of the air box, and an air outlet pipe is mounted at an air outlet of the air box; an air outlet plate is mounted on the inner wall of the mounting frame, a dust collection box is mounted in the mounting base, dust suction plates are symmetrically mounted at the bottom end of the mounting frame, and two sets of dust suction pipes are mounted at a dust suction opening of the dust collection box. By arranging the air bellow, the dust collection box and the dust suction plates, airflow is generated in the air bellow, the dust collection box is connected with the air bellow through the air suction pipes, so that negative pressure is generated in the dust collection box, dust generated by cutting steel pipes through the cutting blades enters the dust collection box through the two dust suction plates and the two dust suction pipes, and the situation that the steel pipe cutting dust is scattered into air is avoided; the body health of workers is harmed, and the working environment is prevented from being polluted.

Description

Technical Field

[0001] The invention relates to the technical field of furniture production, in particular to a handheld cutting device that is easy to use. Background Art

[0002] In recent years, the real estate industry has been booming, and various apartment types and decoration styles have emerged one after another. However, most furniture is relatively popular in design and it is difficult to meet individual requirements. Many furniture have beautiful styles in showrooms, but they are eclipsed once they are moved to specific homes. Either the size does not match the space of the house, or the style does not match the overall decoration style. At this time, some consumers require tailor-made products. At the same time, a large number of customized furniture companies such as Shangpin Home Furnishing Customized Furniture and Weiyi Wardrobe have emerged to provide personalized furniture customization services to Chinese consumers, including overall wardrobes, overall bookcases, walk-in cloakrooms, built-in wardrobes, overall furniture and other products, all of which belong to the category of customized furniture.

[0003] During the production process of custom furniture, since custom furniture is tailor-made, the required steel pipes are of different lengths. Most of the time, staff will use cutting devices to cut the steel pipes to the required length.

[0004] In the prior art, workers mostly cut steel pipes using handheld cutting devices. When the cutting devices are performing cutting operations, a large amount of debris and dust are generated. Most of the cutting ends of the cutting devices are provided with baffles to prevent debris from splashing and causing harm to the workers. However, the dust will spread into the air, endangering the health of the workers and polluting the working environment. Summary of the invention

[0005] Based on this, the object of the present invention is to provide a handheld, easy-to-use cutting device to solve the technical problems in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a handheld convenient-to-use cutting device, comprising a device body, a base, a placement seat, a mounting seat, a mounting frame and a cutting blade, wherein the base is mounted on one end of the device body, the placement seat is movably mounted on the upper end of the base, the mounting seat is movably mounted on one side of the device body, a mounting frame is provided at the bottom end of the mounting seat, and a cutting blade is movably mounted inside the mounting frame;

[0007] A handle is installed on the outer wall of the mounting seat, a third linkage shaft is movably installed inside the mounting frame, and the outer wall of the third linkage shaft is fixedly connected to the inner wall of the cutting blade, a bellows is installed inside the mounting seat, an air suction pipe is installed at the air inlet of the bellows, and an air outlet pipe is installed at the air outlet of the bellows, an air outlet plate is installed on the inner wall of the mounting frame, and the air inlet of the air outlet plate is connected to the other end of the air outlet pipe, a dust collection box is installed inside the mounting seat, and the air outlet of the dust collection box is connected to the other end of the air suction pipe, a dust suction plate is symmetrically installed at the bottom end of the mounting frame, two sets of dust suction pipes are installed at the dust suction port of the dust collection box, and the other ends of the two sets of dust suction pipes are respectively connected to the two sets of dust suction plates;

[0008] A driving motor is installed inside the mounting seat, a driving shaft is installed at the output end of the driving motor, and the driving shaft is connected to the third connecting shaft through a synchronous belt, a mounting shaft is movably installed inside the bellows, and the mounting shaft extends to one end of the outer wall of the bellows and is connected to the driving shaft through a synchronous belt, and a fan is installed on the outer wall of the mounting shaft.

[0009] By adopting the above technical solution, the problem of dust scattering during steel pipe cutting is solved. The driving motor is started, driving the driving shaft to rotate, thereby driving the installation shaft to rotate, and then driving the fan to rotate, so that airflow is generated inside the bellows, and the dust collecting box is connected to the bellows through an air suction pipe, so negative pressure is generated inside the dust collecting box. The dust generated by the cutting blade when cutting the steel pipe enters the dust collecting box through two sets of dust suction plates and two sets of dust suction pipes, thereby preventing the steel pipe cutting dust from scattering into the air, endangering the health of the staff, and preventing the working environment from being polluted.

[0010] The present invention is further configured such that a mounting column is movably installed inside the base, and the upper end of the mounting column is connected to the center end of the placement seat, a movable shaft is installed at the bottom end of the mounting column, a movable column is movably installed inside the device body, and the movable column and the movable shaft are connected by a synchronous belt.

[0011] By adopting the above technical solution, the placement seat rotates, driving the installation column to rotate, thereby driving the movable shaft to rotate, and further driving the movable column to rotate.

[0012] The present invention is further configured such that a mounting plate is movably mounted on the upper end of the device body, a transmission column is mounted on the upper end of the mounting plate, and the transmission column is connected to the movable column via a synchronous belt.

[0013] By adopting the above technical solution, the movable column rotates, driving the transmission column to rotate, thereby driving the mounting plate to rotate.

[0014] The present invention is further configured such that a slide groove is provided on the outer wall of one side of the device body, a transmission shaft is movably installed inside the device body, a movable seat is installed on the outer wall of the mounting seat, and the outer wall of the movable seat is movably connected to the inner wall of the slide groove, the inner wall of the movable seat is threadedly connected to the outer wall of the transmission shaft, and a transmission bevel gear is installed at the bottom end of the transmission shaft.

[0015] By adopting the above technical solution, the seat is moved, which drives the transmission shaft to rotate, thereby driving the transmission bevel gear to rotate.

[0016] The present invention is further configured as follows: a first connecting shaft is movably installed inside the base, a connecting bevel gear and a connecting gear are respectively installed at both ends of the first connecting shaft, and the connecting bevel gear is meshingly connected with the transmission bevel gear, a movable ring is movably installed inside the base, gear rings are installed at both upper and lower ends of the movable ring, and a group of gear rings are meshingly connected with the connecting gear.

[0017] By adopting the above technical solution, the transmission bevel gear rotates, driving the linkage bevel gear to rotate, thereby driving the first linkage shaft to rotate, and then driving the linkage gear to rotate, and then driving a group of gear rings to rotate, and finally driving the movable ring to rotate.

[0018] The present invention is further configured as follows: multiple groups of limit shafts are movably installed inside the base, one ends of the multiple groups of limit shafts are installed with limit gears, and the multiple groups of limit gears are meshingly connected with another group of gear rings, and limit blocks are movably installed on the outer walls of the multiple groups of limit shafts, and the interiors of the multiple groups of limit blocks are respectively threadedly connected with the outer walls of the multiple groups of limit shafts, the multiple groups of limit blocks are all made of rubber, and one ends of the multiple groups of limit blocks are movably connected with the outer wall of the mounting column.

[0019] By adopting the above technical solution, the movable ring rotates, driving another set of gear rings to rotate, thereby driving multiple sets of limit gears to rotate, and then driving multiple sets of limit shafts to rotate, and then driving multiple sets of limit blocks to move, and multiple sets of limit blocks squeeze the installation column, thereby limiting and fixing the installation column.

[0020] The present invention is further configured such that a second linkage shaft is movably installed inside the mounting plate, and the second linkage shaft is connected to the transmission shaft via a synchronous belt.

[0021] By adopting the above technical solution, the transmission shaft rotates, driving the second linkage shaft to rotate.

[0022] The present invention is further configured such that the outer wall of the second linkage shaft is movably connected to the inner wall of the transmission column, the bottom end of the mounting plate is symmetrically mounted with mounting cylinders, and both sets of mounting cylinders are connected to the second linkage shaft via a synchronous belt.

[0023] By adopting the above technical solution, the second linkage shaft rotates, driving the two groups of mounting cylinders to rotate.

[0024] The present invention is further configured such that telescopic cylinders are movably installed inside the two groups of mounting cylinders, and the inner walls of the two groups of mounting cylinders are respectively threadedly connected to the outer walls of the two groups of telescopic cylinders, springs are installed on the inner walls of the two groups of telescopic cylinders, telescopic columns are installed at one end of the two groups of springs, pressure blocks are installed at one end of the two groups of telescopic columns, and both groups of pressure blocks are made of rubber.

[0025] By adopting the above technical solution, the steel pipe is placed on the upper end of the placement seat, and two groups of springs respectively push the two groups of telescopic columns to move, thereby driving the two groups of pressing blocks to squeeze the steel pipe.

[0026] The present invention is further configured such that a groove is provided at the upper end of the placement seat, and the groove is configured in an inverted triangle shape.

[0027] By adopting the above technical solution, the steel pipe is placed on the upper end of the placement seat, and the inverted triangle groove setting improves the placement stability of the steel pipe.

[0028] In summary, the present invention mainly has the following beneficial effects:

[0029] 1. The present invention solves the problem of dust scattering during steel pipe cutting by providing a bellows, a dust collecting box and a dust collecting plate. The driving motor is started to drive the driving shaft to rotate, thereby driving the mounting shaft to rotate, and then driving the fan to rotate, so that airflow is generated inside the bellows, and the dust collecting box is connected to the bellows through an air suction pipe, so negative pressure is generated inside the dust collecting box. Dust generated by the cutting blade when cutting the steel pipe enters the dust collecting box through two groups of dust collecting plates and two groups of dust collecting pipes, thereby preventing the steel pipe cutting dust from scattering into the air, endangering the health of the workers, and preventing the working environment from being polluted.

[0030] 2. The present invention provides a placement seat, a telescopic column and a pressure block, so that the cutting end of the steel pipe can be adjusted at multiple angles. The placement seat is rotated to drive the steel pipe to rotate, and the angle of the cutting end of the steel pipe is adjusted. At the same time, the mounting column is rotated, thereby driving the movable shaft to rotate. The movable shaft is connected to the movable column by a synchronous belt, so the movable column rotates, and the movable column is connected to the transmission column by a synchronous belt, so the transmission column rotates, thereby driving the mounting plate to rotate with the transmission column as the center, and then driving the two groups of mounting cylinders to rotate with the transmission column as the center, and then driving the two groups of pressure blocks to move, so that when the cutting angle of the steel pipe is adjusted, the two groups of pressure blocks respectively limit and fix the two ends of the steel pipe, and when the cutting angle of the steel pipe is adjusted, the stability of the steel pipe on the upper end of the movable seat is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the main body of the device in the present invention;

[0032] Figure 2 It is a schematic diagram of the placement seat in the present invention;

[0033] Figure 3 It is a schematic diagram of the installation column in the present invention;

[0034] Figure 4 It is a schematic diagram of the movable ring in the present invention;

[0035] Figure 5 It is a schematic diagram of the mounting plate in the present invention;

[0036] Figure 6 It is a schematic diagram of the internal structure of the mounting plate in the present invention;

[0037] Figure 7 It is an exploded view of the installation tube in the present invention;

[0038] Figure 8 It is a schematic diagram of the internal structure of the mounting base in the present invention;

[0039] Fig. 9 It is a schematic diagram of the dust suction pipe in the present invention;

[0040] Fig.10 Schematic diagram of the fan in the present invention.

[0041] In the figure: 1, device body; 2, base; 3, placement seat; 4, mounting column; 5, movable shaft; 6, movable ring; 7, gear ring; 8, limit block; 9, limit shaft; 10, limit gear; 11, first linkage shaft; 12, linkage gear; 13, linkage bevel gear; 14, movable column; 15, transmission shaft; 16, transmission bevel gear; 17, mounting plate; 18, transmission column; 19, second linkage shaft; 20, mounting tube; 21, extension Retractable cylinder; 22, telescopic column; 23, spring; 24, pressure block; 25, mounting seat; 26, moving seat; 27, mounting frame; 28, driving motor; 29, driving shaft; 30, third linkage shaft; 31, cutting blade; 32, bellows; 33, mounting shaft; 34, fan; 35, air outlet duct; 36, air outlet plate; 37, air suction duct; 38, dust collection box; 39, dust suction duct; 40, dust suction plate; 41, handle; 42, slide. DETAILED DESCRIPTION

[0042] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] The following describes an embodiment of the present invention based on its overall structure.

[0044] A handheld, easy-to-use cutting device, such as Figure 1 - Fig.10As shown, it includes a device body 1, a base 2, a placement seat 3, a mounting seat 25, a mounting frame 27 and a cutting blade 31. The base 2 is installed at one end of the device body 1, the placement seat 3 is movably installed on the upper end of the base 2, the mounting seat 25 is movably installed on one side of the device body 1, the mounting seat 25 is provided at the bottom end of the mounting seat 25, and the cutting blade 31 is movably installed inside the mounting frame 27;

[0045] A handle 41 is installed on the outer wall of the mounting seat 25, and the mounting seat 25 is moved by the handle 41. A third linkage shaft 30 is movably installed inside the mounting frame 27, and the outer wall of the third linkage shaft 30 is fixedly connected to the inner wall of the cutting blade 31. A bellows 32 is installed inside the mounting seat 25, and an air suction pipe 37 is installed at the air inlet of the bellows 32, and an air outlet pipe 35 is installed at the air outlet of the bellows 32. An air outlet plate 36 is installed on the inner wall of the mounting frame 27, and the air inlet of the air outlet plate 36 is connected to the other end of the air outlet pipe 35. A dust box is installed inside the mounting seat 25. 38, and the air outlet of the dust box 38 is connected to the other end of the suction pipe 37, a dust suction plate 40 is symmetrically installed at the bottom of the mounting frame 27, two sets of dust suction pipes 39 are installed at the dust suction port of the dust box 38, and the other ends of the two sets of dust suction pipes 39 are respectively connected to the two sets of dust suction plates 40, airflow is generated inside the bellows 32, and the dust box 38 is connected to the bellows 32 through the suction pipe 37, so negative pressure is generated inside the dust box 38, and the dust generated by the cutting blade 31 on the steel pipe enters the dust box 38 through the two sets of dust suction plates 40 and the two sets of dust suction pipes 39;

[0046] A driving motor 28 is installed inside the mounting seat 25, and a driving shaft 29 is installed at the output end of the driving motor 28, and the driving shaft 29 is connected to the third connecting shaft 30 through a synchronous belt. The driving motor 28 drives the driving shaft 29 to rotate, thereby driving the third connecting shaft 30 to rotate. A mounting shaft 33 is movably installed inside the bellows 32, and the mounting shaft 33 extends to one end of the outer wall of the bellows 32 and is connected to the driving shaft 29 through a synchronous belt. A fan 34 is installed on the outer wall of the mounting shaft 33, and the driving shaft 29 drives the mounting shaft 33 to rotate, thereby driving the fan 34 to rotate.

[0047] See also Figure 1 - Figure 4 A mounting column 4 is movably installed inside the base 2, and the upper end of the mounting column 4 is connected to the center end of the placement seat 3, and a movable shaft 5 is installed at the bottom end of the mounting column 4. A movable column 14 is movably installed inside the device body 1, and the movable column 14 is connected to the movable shaft 5 through a synchronous belt. The placement seat 3 rotates, driving the mounting column 4 to rotate, thereby driving the movable shaft 5 to rotate, and then driving the movable column 14 to rotate.

[0048] See also Figure 1 - Figure 4A mounting plate 17 is movably mounted on the upper end of the device body 1, and a transmission column 18 is mounted on the upper end of the mounting plate 17. The transmission column 18 is connected to the movable column 14 through a synchronous belt. The movable column 14 rotates, driving the transmission column 18 to rotate, thereby driving the mounting plate 17 to rotate.

[0049] See also Figure 1 - Figure 4 A slide groove 42 is provided on the outer wall of one side of the device body 1, a transmission shaft 15 is movably installed inside the device body 1, a moving seat 26 is installed on the outer wall of the mounting seat 25, and the outer wall of the moving seat 26 is movably connected to the inner wall of the slide groove 42, the inner wall of the moving seat 26 is threadedly connected to the outer wall of the transmission shaft 15, a transmission bevel gear 16 is installed at the bottom end of the transmission shaft 15, the moving seat 26 is displaced, driving the transmission shaft 15 to rotate, thereby driving the transmission bevel gear 16 to rotate.

[0050] See also Figure 1 - Figure 4 A first linkage shaft 11 is movably installed inside the base 2, and a linkage bevel gear 13 and a linkage gear 12 are installed at both ends of the first linkage shaft 11, and the linkage bevel gear 13 is meshed with the transmission bevel gear 16. A movable ring 6 is movably installed inside the base 2, and gear rings 7 are installed at both ends of the movable ring 6, and a group of gear rings 7 are meshed with the linkage gear 12. When the transmission bevel gear 16 rotates, the linkage bevel gear 13 is driven to rotate, thereby driving the first linkage shaft 11 to rotate, and then driving the linkage gear 12 to rotate, and then driving a group of gear rings 7 to rotate, and finally driving the movable ring 6 to rotate.

[0051] See also Figure 1 - Figure 4 A plurality of limit shafts 9 are movably installed inside the base 2, and a limit gear 10 is installed at one end of the plurality of limit shafts 9, and the plurality of limit gears 10 are meshed with another set of gear rings 7. A limit block 8 is movably installed on the outer wall of the plurality of limit shafts 9, and the interior of the plurality of limit blocks 8 are respectively threadedly connected with the outer wall of the plurality of limit shafts 9. The plurality of limit blocks 8 are made of rubber material, and one end of the plurality of limit blocks 8 are movably connected with the outer wall of the mounting column 4. The movable ring 6 rotates, driving the other set of gear rings 7 to rotate, thereby driving the plurality of limit gears 10 to rotate, and then driving the plurality of limit shafts 9 to rotate, and then driving the plurality of limit blocks 8 to displace, and the plurality of limit blocks 8 squeeze the mounting column 4, thereby limiting and fixing the mounting column 4.

[0052] See also Figure 1 - Figure 6 A second linkage shaft 19 is movably installed inside the mounting plate 17, and the second linkage shaft 19 is connected to the transmission shaft 15 through a synchronous belt. When the transmission shaft 15 rotates, the second linkage shaft 19 is driven to rotate.

[0053] See also Figure 1 - Figure 6 The outer wall of the second linkage shaft 19 is movably connected to the inner wall of the transmission column 18, and the mounting cylinder 20 is symmetrically installed at the bottom end of the mounting plate 17, and the two sets of mounting cylinders 20 are connected to the second linkage shaft 19 through a synchronous belt. The second linkage shaft 19 rotates, driving the two sets of mounting cylinders 20 to rotate.

[0054] See also Figure 1 - Figure 7 The two sets of mounting tubes 20 are both movably installed with telescopic tubes 21, and the inner walls of the two sets of mounting tubes 20 are respectively threadedly connected with the outer walls of the two sets of telescopic tubes 21, and the inner walls of the two sets of telescopic tubes 21 are both installed with springs 23, and one end of the two sets of springs 23 is installed with telescopic columns 22, and one end of the two sets of telescopic columns 22 is installed with pressure blocks 24, and the two sets of pressure blocks 24 are made of rubber. The steel pipe is placed on the upper end of the placement seat 3, and the two sets of springs 23 push the two sets of telescopic columns 22 to move, thereby driving the two sets of pressure blocks 24 to squeeze the steel pipe.

[0055] See also Figure 1 - Figure 2 A groove is provided at the upper end of the placement seat 3, and the groove is arranged in an inverted triangle shape. A steel pipe is placed at the upper end of the placement seat 3, and the inverted triangle groove arrangement improves the placement stability of the steel pipe.

[0056] The working principle of the present invention is as follows: when the worker uses the cutting device to cut the steel pipe, the worker places the steel pipe on the upper end of the placement seat 3, and places the cut end of the steel pipe on the lower end of the cutting blade 31, and the two groups of springs 23 respectively push the two groups of telescopic columns 22 to move, thereby driving the two groups of pressing blocks 24 to squeeze the steel pipe. If the worker needs to adjust the cutting angle of the steel pipe, the worker rotates the placement seat 3, drives the steel pipe to rotate, and adjusts the angle of the cut end of the steel pipe;

[0057] When the placement seat 3 rotates, the mounting column 4 is driven to rotate, thereby driving the movable shaft 5 to rotate. The movable shaft 5 is connected to the movable column 14 through a synchronous belt, so the movable column 14 rotates, and the movable column 14 is connected to the transmission column 18 through a synchronous belt, so the transmission column 18 rotates, thereby driving the mounting plate 17 to rotate with the transmission column 18 as the center, and then driving the two groups of mounting cylinders 20 to rotate with the transmission column 18 as the center, and then driving the two groups of pressing blocks 24 to move, so that when the steel pipe adjusts the cutting angle, the two groups of pressing blocks 24 respectively limit and fix the two ends of the steel pipe, thereby improving the stability of the steel pipe on the upper end of the movable seat 3;

[0058] After the steel pipe cutting angle is adjusted, the staff starts the drive motor 28, and the drive motor 28 drives the drive shaft 29 to rotate. The drive shaft 29 is connected to the third linkage shaft 30 through a synchronous belt, so the third linkage shaft 30 rotates, thereby driving the cutting blade 31 to rotate;

[0059] When the cutting blade 31 rotates, the staff pulls the handle 41 to move downward, thereby driving the mounting seat 25 and the moving seat 26 to move downward, and the inner wall of the moving seat 26 is threadedly connected with the outer wall of the transmission shaft 15, so the transmission shaft 15 rotates, thereby driving the transmission bevel gear 16 to rotate, and the transmission bevel gear 16 is meshed and connected with the linkage bevel gear 13, so the linkage bevel gear 13 rotates, thereby driving the first linkage shaft 11 to rotate, and then driving the linkage gear 12 to rotate;

[0060] When the linkage gear 12 rotates, the linkage gear 12 is meshed and connected with a group of gear rings 7, so one group of gear rings 7 rotates, thereby driving the movable ring 6 to rotate, and then driving the other group of gear rings 7 to rotate, and the other group of gear rings 7 are respectively meshed and connected with multiple groups of limit gears 10, so the multiple groups of limit gears 10 rotate, thereby driving the multiple groups of limit shafts 9 to rotate, and the outer walls of the multiple groups of limit shafts 9 are respectively threadedly connected with the inner walls of the multiple groups of limit blocks 8, so the multiple groups of limit blocks 8 are displaced, and one end of the multiple groups of limit blocks 8 squeezes the mounting column 4, thereby limiting and fixing the mounting column 4, thereby improving the stability of the placement seat 3;

[0061] When the transmission shaft 15 rotates, the transmission shaft 15 is connected to the second linkage shaft 19 through a synchronous belt, so the second linkage shaft 19 rotates, and the second linkage shaft 19 is connected to the two sets of mounting tubes 20 through synchronous belts, so the two sets of mounting tubes 20 rotate, and the inner walls of the two sets of mounting tubes 20 are respectively threadedly connected to the outer walls of the two sets of telescopic tubes 21, so the two sets of telescopic tubes 21 move downward, thereby increasing the pressure of the two sets of springs 23 on the two sets of telescopic columns 22, and further improving the stability of the steel pipe on the upper end of the placement seat 3;

[0062] The mounting seat 25 continues to move downward, driving the cutting blade 31 to cut the steel pipe;

[0063] When the driving shaft 29 rotates, the driving shaft 29 is connected to the mounting shaft 33 through a synchronous belt, so the mounting shaft 33 rotates, thereby driving the fan 34 to rotate, so that airflow is generated inside the bellows 32, and the dust box 38 is connected to the bellows 32 through the suction pipe 37, so negative pressure is generated inside the dust box 38, and the dust box 38 is connected to the two sets of dust suction plates 40 through the dust suction pipes 39 respectively, so the two sets of dust suction plates 40 generate suction force, and the dust generated by the cutting blade 31 cutting the steel pipe enters the dust box 38 through the two sets of dust suction plates 40 and the two sets of dust suction pipes 39;

[0064] When airflow is generated inside the bellows 32, the airflow enters the air outlet plate 36 through the air outlet pipe 35, and the air outlet plate 36 sprays the airflow toward the cutting blade 31, thereby cooling the cutting blade 31 and increasing the service life of the cutting blade 31;

[0065] The present invention is provided with a bellows 32, a dust collecting box 38 and a dust collecting plate 40. An air flow is generated inside the bellows 32, and the dust collecting box 38 is connected to the bellows 32 through an air suction pipe 37. Therefore, a negative pressure is generated inside the dust collecting box 38. The dust generated by the cutting blade 31 when cutting the steel pipe enters the dust collecting box 38 through two groups of dust collecting plates 40 and two groups of dust collecting pipes 39.

[0066] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A handheld, convenient-to-use cutting device, comprising a device body (1), a base (2), a placement seat (3), a mounting seat (25), a mounting frame (27) and a cutting blade (31), characterized in that: A base (2) is installed at one end of the device body (1), a placement seat (3) is movably installed on the upper end of the base (2), a mounting seat (25) is movably installed on one side of the device body (1), a mounting frame (27) is provided at the bottom end of the mounting seat (25), and a cutting blade (31) is movably installed inside the mounting frame (27); The outer wall of the mounting seat (25) is provided with a handle (41), a third linkage shaft (30) is movably provided inside the mounting frame (27), and the outer wall of the third linkage shaft (30) is fixedly connected to the inner wall of the cutting blade (31), a bellows (32) is provided inside the mounting seat (25), an air inlet of the bellows (32) is provided with an air suction pipe (37), an air outlet of the bellows (32) is provided with an air outlet pipe (35), and an air outlet plate is provided on the inner wall of the mounting frame (27). (36), and the air inlet of the air outlet plate (36) is connected to the other end of the air outlet pipe (35), a dust collecting box (38) is installed inside the mounting seat (25), and the air outlet of the dust collecting box (38) is connected to the other end of the air suction pipe (37), a dust suction plate (40) is symmetrically installed at the bottom end of the mounting frame (27), and two groups of dust suction pipes (39) are installed at the dust suction port of the dust collecting box (38), and the other ends of the two groups of dust suction pipes (39) are respectively connected to the two groups of dust suction plates (40); A driving motor (28) is installed inside the mounting seat (25), a driving shaft (29) is installed at the output end of the driving motor (28), and the driving shaft (29) is connected to the third linkage shaft (30) through a synchronous belt. A mounting shaft (33) is movably installed inside the bellows (32), and the mounting shaft (33) extends to one end of the outer wall of the bellows (32) and is connected to the driving shaft (29) through a synchronous belt. A fan (34) is installed on the outer wall of the mounting shaft (33).

2. A handheld convenient cutting device according to claim 1, characterized in that: A mounting column (4) is movably mounted inside the base (2), and the upper end of the mounting column (4) is connected to the central end of the placement seat (3), and a movable shaft (5) is mounted on the lower end of the mounting column (4). A movable column (14) is movably mounted inside the device body (1), and the movable column (14) and the movable shaft (5) are connected via a synchronous belt.

3. A handheld convenient cutting device according to claim 2, characterized in that: A mounting plate (17) is movably mounted on the upper end of the device body (1), a transmission column (18) is mounted on the upper end of the mounting plate (17), and the transmission column (18) is connected to the movable column (14) via a synchronous belt.

4. A handheld convenient cutting device according to claim 3, characterized in that: A slide groove (42) is provided on the outer wall of one side of the device body (1); a transmission shaft (15) is movably mounted inside the device body (1); a movable seat (26) is mounted on the outer wall of the mounting seat (25); the outer wall of the movable seat (26) is movably connected to the inner wall of the slide groove (42); the inner wall of the movable seat (26) is threadedly connected to the outer wall of the transmission shaft (15); and a transmission bevel gear (16) is mounted on the bottom end of the transmission shaft (15).

5. A handheld convenient cutting device according to claim 4, characterized in that: A first linkage shaft (11) is movably mounted inside the base (2), a linkage bevel gear (13) and a linkage gear (12) are mounted at both ends of the first linkage shaft (11), and the linkage bevel gear (13) is meshingly connected with the transmission bevel gear (16), a movable ring (6) is movably mounted inside the base (2), gear rings (7) are mounted at both upper and lower ends of the movable ring (6), and a group of gear rings (7) are meshingly connected with the linkage gear (12).

6. A handheld convenient cutting device according to claim 5, characterized in that: A plurality of limit shafts (9) are movably mounted inside the base (2), and a limit gear (10) is mounted on one end of each of the limit shafts (9), and each of the limit gears (10) is meshingly connected with another set of gear rings (7). A limit block (8) is movably mounted on the outer wall of each of the limit shafts (9), and the interior of each of the limit blocks (8) is respectively threadedly connected with the outer wall of each of the limit shafts (9). Each of the limit blocks (8) is made of rubber, and each of the limit blocks (8) is movably connected with the outer wall of the mounting column (4).

7. A handheld convenient cutting device according to claim 6, characterized in that: A second linkage shaft (19) is movably mounted inside the mounting plate (17), and the second linkage shaft (19) is connected to the transmission shaft (15) via a synchronous belt.

8. A handheld convenient cutting device according to claim 7, characterized in that: The outer wall of the second linkage shaft (19) is movably connected to the inner wall of the transmission column (18); the bottom end of the mounting plate (17) is symmetrically mounted with mounting cylinders (20); and both sets of mounting cylinders (20) are connected to the second linkage shaft (19) via a synchronous belt.

9. A handheld convenient cutting device according to claim 8, characterized in that: The two groups of mounting tubes (20) are both movably mounted with telescopic tubes (21), and the inner walls of the two groups of mounting tubes (20) are respectively threadedly connected with the outer walls of the two groups of telescopic tubes (21), the inner walls of the two groups of telescopic tubes (21) are both mounted with springs (23), one end of the two groups of springs (23) are both mounted with telescopic columns (22), one end of the two groups of telescopic columns (22) are both mounted with pressure blocks (24), and the two groups of pressure blocks (24) are both made of rubber.

10. The handheld, convenient-to-use cutting device according to claim 1, characterized in that: The upper end of the placement seat (3) is provided with a groove, and the groove is arranged in an inverted triangle shape.

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