Portable semi-automatic pipe hole cutting machine

Abstract

The utility model provides a portable semi-automatic pipe hole cutting machine, which relates to the technical field of pipe hole processing and comprises a support, a rotating shaft pipe rotatably connected to the support, a positioning thimble arranged at the bottom end of the rotating shaft pipe, a cantilever connected to the rotating shaft pipe, a cutting torch fixing device arranged at the end of the cantilever, and a cutting torch connected to the cutting torch fixing device. The device has the advantages of being reasonable in design, simple in structure, safe, reliable and convenient to construct, and overcoming the technical limitation existing in the pipe hole machining process.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe hole processing, in particular to a portable pipe hole semi-automatic cutting machine. Background Art

[0002] In the production process of chemical equipment and pipelines, the main method of connecting the pipe to the cylinder of tank equipment, and the branch pipe to the main pipe is to drill holes and weld. The circular hole drilled on the cylinder or main pipe is projected onto the cylinder from the axis of the pipe as a circle with the same center as the pipe, and on the cylinder it is reflected as a curved ellipse, and the intersection of the pipe and the cylinder is in the form of an intersecting line.

[0003] In the specific limited environment of the construction site, it is often impossible to use large CNC equipment for related wire cutting. In this case, the commonly used pipe hole processing steps are: first, mark the points on the cylinder to determine the center and radius of the pipe hole. The riveter master determines two points on both sides of the center of the pipe hole in the direction perpendicular to the axis of the cylinder according to the size of the cylinder radius and combined with production experience, and then uses the circle to plan the line, and the size has deviations. After marking, a cutting torch is used to manually cut along the marked line, and the hole is processed again after the hole is opened. This processing method has high requirements on the cutting technology of the operator. One pipe hole needs to be cut twice, which is more troublesome.

[0004] How to solve the above technical problems is the subject faced by the present utility model. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the utility model provides a portable semi-automatic pipe hole cutting machine which has reasonable design, simple structure, safety and reliability, convenient construction and overcomes the technical limitations existing in the pipe hole processing process.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows: the utility model provides a portable semi-automatic pipe hole cutting machine, comprising a bracket, a rotating shaft tube is rotatably connected to the bracket, and a positioning ejector pin is arranged at the bottom end of the rotating shaft tube;

[0007] The rotating shaft tube is connected with a cantilever, a cutting nozzle fixing device is arranged at the end of the cantilever, and the cutting nozzle fixing device is connected with a cutting nozzle.

[0008] A plurality of supporting feet are arranged at the bottom of the bracket, and the supporting feet are arranged obliquely;

[0009] The center of the bottom of the bracket is connected to the rotating shaft tube.

[0010] The bracket is fixedly connected with a shaft sleeve, a bearing is arranged inside the shaft sleeve, and the bearing is connected with the rotating shaft tube;

[0011] The rotating shaft tube is vertically connected to the bracket.

[0012] A spring is arranged in the tube bore where the positioning ejector pin is connected to the rotating shaft tube.

[0013] The cutting nozzle fixing device includes a first clamp, which includes an upper clamp and a lower clamp, the upper clamp and the lower clamp are slidably connected to the cantilever, and the first clamp is provided with a radius adjustment knob, and the radius adjustment knob includes a bolt and a nut passing through the upper clamp and the lower clamp.

[0014] The cutting nozzle fixing device comprises a second clamp, the second clamp is fixedly connected to the first clamp, and the second clamp is slidably connected to an adjustment rod perpendicular to the cantilever;

[0015] The second clamp is provided with a height adjustment knob, and the height adjustment knob is fixedly connected with a coaxial gear, and the gear meshes with the rack of the adjustment rod.

[0016] The bottom end of the regulating rod is movably connected with the cutting nozzle, the cutting nozzle is connected with an air pipe, and the air pipe is connected with an air valve.

[0017] The bottom end of the adjusting rod is connected to a rotating rod through a third clamp, the third clamp is slidably connected to the rotating rod through an upper clamp and a lower clamp, the rotating rod is perpendicular to the adjusting rod, and the upper clamp and the lower clamp of the third clamp are locked by screws and nuts;

[0018] The end of the rotating rod is connected to the cutting nozzle through a fourth clamp, the upper clamp and the lower clamp of the fourth clamp are slidably connected to the cutting nozzle, the cutting nozzle is perpendicular to the rotating rod, and the upper clamp and the lower clamp of the fourth clamp are locked by screws and nuts.

[0019] The beneficial effects of the utility model are as follows: fully considering the problems existing in production, reasonably designing and solving these unfavorable factors in the process of pipe hole processing, the quality of the pipe hole cut processed by the portable pipe hole semi-automatic cutting machine of the device is compared with manual opening, the cut is smoother and more beautiful, and the processing quality is better;

[0020] The main technical effects of this device are as follows:

[0021] 1. Simple and firm structure, easy to carry and easy to operate;

[0022] 2. Determine the center and radius of the circle without marking. The hole and the opening are formed in one step without secondary operation.

[0023] 3. The angle between the tube hole and the vertical direction can be accurately controlled;

[0024] 4. The cutting nozzle is stable during the cutting process, the travel speed is easier to control evenly, and the cutting surface is smooth and beautiful;

[0025] 5. The grinding work is greatly reduced. The opening of the inner ruptured pipe needs to be ground inside the tank body, which makes the grinding work faster and more humane;

[0026] 6. During circular motion, the radius is fixed and the vertical direction is adjustable to ensure the absolute roundness of the tube hole;

[0027] 7. The processed pipe mouth section is flat and the projection surface is absolutely round, which greatly improves the efficiency of grinding and spot welding assembly;

[0028] 8. High processing quality, ensuring welding quality, reducing repeated operations and welding material consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is the front view of the utility model.

[0030] Figure 2 It is a left view of the utility model.

[0031] Figure 3 It is a three-dimensional structural schematic diagram of the utility model.

[0032] Figure 4 It is a schematic diagram of the connection between the cutting nozzle and the adjusting rod of the utility model.

[0033] Among them, the accompanying drawings are marked as follows: 1, bracket; 101, support foot; 3, sleeve; 4, rotating shaft tube; 5, positioning ejector; 6, cantilever; 7, radius adjustment knob; 701, height adjustment knob; 702, gear; 8, cutting nozzle fixing device; 801, first clamp; 802, second clamp; 803, adjustment rod; 804, rack; 805, third clamp; 9, cutting nozzle; 901, air pipe; 10, rotating rod; 1001, fourth clamp. DETAILED DESCRIPTION

[0034] The technical features of this solution can be clearly explained. The solution is described below through a specific implementation method.

[0035] See also Figures 1 to 3 As shown, this embodiment is a portable semi-automatic pipe hole cutting machine, comprising a bracket 1, a rotating shaft tube 4 is rotatably connected to the bracket 1, and a positioning ejector pin 5 is arranged at the bottom end of the rotating shaft tube 4;

[0036] The rotating shaft tube 4 is connected with a cantilever 6 , a cutting nozzle fixing device 8 is provided at the end of the cantilever 6 , and a cutting nozzle 9 is connected with the cutting nozzle fixing device 8 .

[0037] A plurality of legs 101 are provided at the bottom of the bracket 1, and the legs 101 are arranged obliquely;

[0038] The bottom center of the bracket 1 is connected to a rotating shaft tube 4 .

[0039] The bracket 1 is fixedly connected with a shaft sleeve 3, a bearing is arranged in the shaft sleeve 33, and the bearing is connected with a rotating shaft tube 4;

[0040] The rotating shaft tube 4 is vertically connected to the bracket 1 .

[0041] A spring is arranged in the tube bore where the positioning ejector pin 5 is connected to the rotating shaft tube 4 .

[0042] The cutting nozzle fixing device 8 includes a first clamp 801, which includes an upper clamp and a lower clamp. The upper clamp and the lower clamp are slidably connected to the cantilever 6. The first clamp 801 is provided with a radius adjustment knob 7, and the radius adjustment knob 7 includes a bolt and a nut passing through the upper clamp and the lower clamp.

[0043] The cutting nozzle fixing device 8 comprises a second clamp 802, the second clamp 802 is fixedly connected to the first clamp 801, and the second clamp 802 is slidably connected to an adjustment rod 803 which is perpendicular to the cantilever 6;

[0044] The second clamp 802 is provided with a height adjustment knob 701 , and the height adjustment knob 701 is fixedly connected with a coaxial gear 702 , and the gear 702 meshes with a rack 804 of the adjustment rod 803 .

[0045] The bottom end of the adjusting rod 803 is movably connected with a cutting nozzle 9, the cutting nozzle 9 is connected with an air pipe 901, and the air pipe 901 is connected with an air valve.

[0046] The bottom end of the adjusting rod 803 is connected to the rotating rod 10 through the third clamp 805. The third clamp 805 is slidably connected to the rotating rod 10 through the upper clamp and the lower clamp. The rotating rod 10 is perpendicular to the adjusting rod 803. The upper clamp and the lower clamp of the third clamp 805 are locked by screws and nuts.

[0047] The end of the rotating rod 10 is connected to the cutting nozzle 9 through the fourth clamp 1001. The upper clamp and the lower clamp of the fourth clamp 1001 are slidably connected to the cutting nozzle 9. The cutting nozzle 9 is perpendicular to the rotating rod 10. The upper clamp and the lower clamp of the fourth clamp 1001 are locked by screws and nuts.

[0048] When the utility model is actually used:

[0049] 1. According to the nozzle orientation drawing, determine the nozzle angle and draw a line, determine the nozzle center position according to the longitudinal distance on the blueprint, and determine the nozzle radius on the longitudinal line of the cylinder;

[0050] 2. Place the semi-automatic cutting machine of the device, adjust the distance between the cutting nozzle 9 and the barrel to about 5 mm through the second fixture 802, design the groove angle according to the drawing, adjust the angle of the cutting nozzle 9 through the screws of the third fixture 805 and the fourth fixture 1001, position the positioning pin 5 at the center of the pipe mouth, and then adjust the radius adjustment knob 7 to adjust the cutting nozzle 9 to the radius position;

[0051] 3. Rotate the cutting nozzle 9 for a certain distance, open the gas pipe 901 switch to ignite, adjust the flame size through the gas valve according to the wall thickness of the cylinder, and start cutting;

[0052] 4. The cantilever 6 starts to make circular motion, and the cutting nozzle height 9 is manually adjusted during the cutting process so that the distance between the cutting nozzle 9 and the surface of the cylinder is always kept at 5 mm;

[0053] 5. The cutting nozzle 9 moves in a circle for one circle, the pipe hole processing is completed, the gas source is closed, and the flame is turned off.

[0054] Technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be elaborated here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A portable semi-automatic pipe hole cutting machine, characterized in that: It comprises a bracket (1), the bracket (1) is rotatably connected to a rotating shaft tube (4), and a positioning ejector pin (5) is provided at the bottom end of the rotating shaft tube (4); The rotating shaft tube (4) is connected to a cantilever (6), a cutting nozzle fixing device (8) is provided at the end of the cantilever (6), and the cutting nozzle fixing device (8) is connected to a cutting nozzle (9).

2. The portable semi-automatic pipe hole cutting machine according to claim 1, characterized in that: A plurality of supporting feet (101) are arranged at the bottom of the bracket (1), and the supporting feet (101) are arranged at an angle; The center of the bottom of the bracket (1) is connected to the rotating shaft tube (4).

3. The portable semi-automatic pipe hole cutting machine according to claim 1, characterized in that: The support (1) is fixedly connected to a shaft sleeve (3), a bearing is arranged inside the shaft sleeve (3), and the bearing is connected to the rotating shaft tube (4); The rotating shaft tube (4) is vertically connected to the bracket (1).

4. The portable semi-automatic pipe hole cutting machine according to claim 1, characterized in that: A spring is arranged in the tube bore where the positioning ejector pin (5) is connected to the rotating shaft tube (4).

5. The portable semi-automatic pipe hole cutting machine according to claim 1, characterized in that: The cutting nozzle fixing device (8) includes a first clamp (801), the first clamp (801) includes an upper clamp and a lower clamp, the upper clamp and the lower clamp are slidably connected to the cantilever (6), the first clamp (801) is provided with a radius adjustment knob (7), and the radius adjustment knob (7) includes a bolt and a nut passing through the upper clamp and the lower clamp.

6. The portable semi-automatic pipe hole cutting machine according to claim 5, characterized in that: The cutting nozzle fixing device (8) comprises a second clamp (802), wherein the second clamp (802) is fixedly connected to the first clamp (801), and the second clamp (802) is slidably connected to an adjustment rod (803) perpendicular to the cantilever (6); The second clamp (802) is provided with a height adjustment knob (701), and the height adjustment knob (701) is fixedly connected with a coaxial gear (702), and the gear (702) meshes with a rack (804) of the adjustment rod (803).

7. The portable semi-automatic pipe hole cutting machine according to claim 6, characterized in that: The bottom end of the adjusting rod (803) is movably connected to the cutting nozzle (9), the cutting nozzle (9) is connected to an air pipe (901), and the air pipe (901) is connected to an air valve.

8. The portable semi-automatic pipe hole cutting machine according to claim 7, characterized in that: The bottom end of the adjusting rod (803) is connected to a rotating rod (10) via a third clamp (805); the third clamp (805) is slidably connected to the rotating rod (10) via an upper clamp and a lower clamp; the rotating rod (10) is perpendicular to the adjusting rod (803); the upper clamp and the lower clamp of the third clamp (805) are locked via screws and nuts; The end of the rotating rod (10) is connected to the cutting nozzle (9) via a fourth clamp (1001); the upper clamp and the lower clamp of the fourth clamp (1001) are slidably connected to the cutting nozzle (9); the cutting nozzle (9) is perpendicular to the rotating rod (10); and the upper clamp and the lower clamp of the fourth clamp (1001) are locked by screws and nuts.

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