Anti-deformation cutting tool for thin-wall steel pipe

Abstract

The utility model relates to the technical field of steel pipe anti-deformation supporting, in particular to a thin-wall steel pipe anti-deformation cutting tool which comprises a barrel-shaped transverse handle, a supporting disc is fixed to the front end of the barrel-shaped transverse handle, multiple sets of movable supporting heads are distributed on the peripheral side of the supporting disc, and the thin-wall steel pipe is internally supported close to the cutting position through the multiple sets of movable supporting heads. The position, close to the supporting disc, of the barrel-shaped transverse handle is fixedly sleeved with a set of blocking discs, gaps are reserved between the blocking discs and the supporting disc, the front end and the rear end of an annular elastic film are fixed to the side edge of the supporting disc and the side edges of the blocking discs respectively, after a large amount of cooling liquid is injected, the annular elastic film expands towards the circumferential side till making contact with the inner wall of the thin-wall steel pipe, and heat generated during cutting is absorbed; and integrated combination of the inner supporting structure and the cooling structure is achieved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe anti-deformation support technology, specifically to a thin-walled steel pipe anti-deformation cutting tool. Background Technology

[0002] Thin-walled steel pipes are prone to deformation during cutting due to their thin walls, affecting cutting quality and subsequent use. Deformation during cutting mainly stems from the extrusion deformation caused by the cutting blade. The high temperatures generated during cutting can alter the material properties of the steel pipe, reducing its strength and toughness, thus making it more susceptible to deformation.

[0003] Internal supports can be used to alleviate the extrusion pressure during cutting.

[0004] To mitigate the high temperatures during cutting, a cooling mechanism can be installed, such as an air-cooled or water-cooled device, to cool the outer wall of the steel pipe at the cutting point.

[0005] The two methods mentioned above for preventing deformation of thin-walled steel pipes are mostly used alone or in combination, but there is a lack of integrated tools for preventing deformation and cutting. Utility Model Content

[0006] (I) Technical Issues

[0007] The present invention aims to at least solve the problem that the existing technology lacks a structural integration of support and cooling methods for preventing deformation of thin-walled steel pipes.

[0008] (II) Technical Content

[0009] This solution provides a deformation-resistant cutting tool for thin-walled steel pipes, achieved through the following specific technical means, including:

[0010] A cylindrical horizontal handle has a support plate fixed at its front end, and multiple sets of movable support heads are distributed around the support plate.

[0011] An annular elastic membrane is fixedly fitted with a set of baffles on the cylindrical crossbar near the support plate. The front and rear ends of the annular elastic membrane are fixed to the side of the support plate and the side of the baffles, respectively, so that the annular elastic membrane, together with the rear wall of the support plate and the front wall of the baffles, forms an annular space for coolant injection.

[0012] Preferred technical solution 1: The baffle plate is provided with a liquid inlet hole that communicates with the annular space, and the liquid inlet hole can be connected to an external liquid supply device through a hose.

[0013] Preferred technical solution 2: As an alternative, a liquid storage and filling assembly is provided on the rear side of the baffle.

[0014] Preferred technical solution 3: The liquid storage and filling assembly includes a liquid storage cylinder fixed to the rear wall of the baffle plate, and the front side of the liquid storage cylinder is connected to the liquid inlet hole;

[0015] An internally threaded sleeve is fitted onto a cylindrical horizontal shank and threaded to its outer wall. A stopper plate is fitted and fixed at the front end of the internally threaded sleeve.

[0016] Preferred technical solution four: The support plate is provided with an adjustment component for controlling the length of multiple sets of movable support heads extending out of the support plate, and the control end of the adjustment component passes through the cylindrical cross handle and extends out from the rear end.

[0017] Preferred technical solution five: The adjustment component includes a main shaft rotatably installed at the center of the support plate, and multiple sets of tracks are formed around the main shaft on the front wall of the support plate. Each set of movable support heads slides in a corresponding set of tracks. The movable support heads are connected to the lead screws rotatably installed in the tracks through threaded holes. The driven bevel gears fixed at the ends of the multiple sets of lead screws mesh with the driving bevel gears fixed on the main shaft.

[0018] The rear end of the spindle extends into the cylindrical shank and protrudes from the rear port of the cylindrical shank.

[0019] (III) Technical Effects

[0020] The above structure gives this solution the following advantages:

[0021] 1. To address the issue of thin-walled steel pipes being prone to deformation during cutting, this paper proposes a solution that differentiates between the current methods of using internal support structures and external cooling structures to prevent deformation. This solution integrates the internal support structure with the cooling structure, providing internal support while simultaneously cooling from the inside.

[0022] 2. The whole unit can be used with different types of cutting equipment. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of this solution;

[0025] Figure 2 This is an exploded view of the proposed solution.

[0026] Figure 3 This is a schematic diagram of the liquid storage tank in this scheme;

[0027] Figure 4 This is a sectional view of the scheme.

[0028] Among them, 1. cylindrical cross handle, 2. annular elastic membrane, 21. annular space, 3. support plate, 31. track, 4. movable support head, 5. baffle plate, 51. liquid inlet, 6. liquid storage and filling assembly, 61. liquid storage cylinder, 62. internal threaded sleeve, 63. plug plate, 631. liquid pipe, 632. cap, 7. adjusting assembly, 71. main shaft, 72. lead screw, 73. driven bevel gear, 74. driving bevel gear. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 3-4 The thin-walled steel pipe anti-deformation cutting tool includes a cylindrical horizontal handle 1 and an annular elastic membrane 2. A support plate 3 is fixed at the front end of the cylindrical horizontal handle 1, and multiple sets of movable support heads 4 are distributed around the support plate 3. By adjusting the length of the multiple sets of movable support heads 4 extending from the side wall of the support plate 3, it can be adapted to thin-walled steel pipes within a certain diameter range and is used to provide internal support for the thin-walled steel pipe near the cutting point.

[0031] An annular elastic membrane 2 has a set of baffles 5 fixedly fitted on the cylindrical horizontal handle 1 near the support plate 3. There is a gap between the baffles 5 and the support plate 3. The front and rear ends of the annular elastic membrane 2 are fixed to the side of the support plate 3 and the side of the baffles 5, respectively. This allows the annular elastic membrane 2 to form an annular space 21 for coolant injection, together with the rear wall of the support plate 3 and the front wall of the baffles 5. Due to the expandable nature of the annular elastic membrane 2, it can expand to the periphery until it contacts the inner wall of the thin-walled steel pipe after a large amount of coolant is injected, thus absorbing the heat during cutting. At this time, multiple sets of movable support heads 4 located closer to the cutting point at the front block the front of the expanded annular elastic membrane 2, preventing the annular elastic membrane 2 from extending to the cutting point. The spacing between adjacent movable support heads 4 is set to effectively prevent the expanded annular elastic membrane 2 from spreading to the front of the movable support head 4.

[0032] For the annular elastic membrane 2, it is best to select an elastic membrane that is stretchable, thermally conductive, and has good toughness, such as polyvinylidene fluoride-co-hexafluoropropylene membrane, ultra-high molecular weight polyethylene fiber membrane, polyurethane elastomer membrane, etc.

[0033] The best coolant to use is a liquid with good fluidity, low cost, and good thermal conductivity, such as water, ethylene glycol-based coolant, propylene glycol-based coolant, etc.

[0034] When using it, you can hold the cylindrical handle 1 and put the tool into the cutting area of ​​the thin-walled steel pipe, and install it before cutting.

[0035] Please see Figures 1-4 The thin-walled steel pipe anti-deformation cutting tool has a liquid inlet 51 on the baffle 5 that communicates with the annular space 21. The liquid inlet 51 can be connected to an external liquid supply device through the pipe, and the liquid supply device can be used to supply and extract coolant.

[0036] As an alternative, a liquid storage and filling component 6 can be installed on the rear side of the baffle 5. The liquid storage and filling component 6 is used to inject pre-stored coolant into the annular space 21 through the liquid inlet 51 when needed, and to extract the coolant from the annular space 21 after cutting, so that the annular elastic membrane 2 retracts away from the inner wall of the thin-walled steel pipe.

[0037] The liquid storage and filling assembly 6 includes a liquid storage cylinder 61 fixed to the rear wall of the baffle 5. The front side of the liquid storage cylinder 61 is connected to the liquid inlet hole 51 and surrounds the cylindrical cross handle 1. An internal threaded sleeve 62 is fitted on the cylindrical cross handle 1 and threaded to its outer wall. A stopper plate 63 is fitted and fixed at the front end of the internal threaded sleeve 62. The stopper plate 63 extends into the liquid storage cylinder 61. The position of the stopper plate 63 can be adjusted by turning the internal threaded sleeve 62 on the cylindrical cross handle 1. The stopper plate 63 slides against the inner wall of the liquid storage cylinder 61 to control the pushing or pulling of the coolant in the liquid storage cylinder 61 into or out of the liquid inlet hole 51.

[0038] A liquid pipe 631 is fixed through the stopper plate 63, and the port of the liquid pipe 631 can be sealed with a cap 632. The coolant in the liquid storage tank 61 can be replaced through the liquid pipe 631.

[0039] Please see Figures 1-2 and Figure 4 The thin-walled steel pipe anti-deformation cutting tool has an adjustment component 7 on the support plate 3 for controlling the length of multiple sets of movable support heads 4 extending out of the support plate 3. The control end of the adjustment component 7 passes through the cylindrical cross handle 1 and extends out from the rear end.

[0040] The adjustment assembly 7 includes a main shaft 71 rotatably mounted at the center of the support plate 3. A number of tracks 31, matching the number of movable support heads 4, are formed around the main shaft 71 on the front wall of the support plate 3. Each set of movable support heads 4 is slidably mounted in a corresponding set of tracks 31. A set of lead screws 72 is also rotatably mounted in the track 31. The movable support heads 4 are sleeved on the lead screws 72 through threaded holes. The driven bevel gears 73 fixed at the ends of the multiple sets of lead screws 72 mesh with the driving bevel gears 74 fixed on the main shaft 71. The rotation of the main shaft 71 is used to achieve synchronous rotation of the multiple sets of lead screws 72 through gear transmission, thereby achieving synchronous control of the extension amount of the multiple sets of movable support heads 4.

[0041] The rear end of the spindle 71 extends into the cylindrical handle 1 and protrudes from the rear port of the cylindrical handle 1. The protruding part is used as a handle, and the spindle 71 is rotatably connected to the cylindrical handle 1.

[0042] The tool in this solution is designed for steel pipes with relatively large diameters when used in the manual installation mode inside thin-walled steel pipes, making it easier for hands to enter the steel pipe for operation.

[0043] If the steel pipe has a smaller diameter, after the overall size is reduced proportionally, the cylindrical cross handle 1 can be fixed on the cutting equipment, and a small motor connected to the main shaft 71 can be installed in the support plate 3 or at the tail end of the cylindrical cross handle 1.

[0044] Meanwhile, the liquid inlet 51 is connected to an external liquid supply device through a pipe, and a pressure sensor is installed at the end of the movable support head 4 to detect the contact pressure between it and the inner wall of the pipe, and a liquid pressure sensor is installed in the annular space 21 to detect the cooling liquid pressure in the annular space 21.

[0045] The sensors mentioned above should preferably be those with wireless signal transmission and alarm functions.

[0046] Regarding the power supply issue at this time, you can use the power supply provided by the cutting equipment, or you can use a portable power bank to provide power separately. If you use a portable power bank, you need to provide a place to put the power bank on the ground and charge it in a timely manner.

[0047] It is worth noting that the motor, pressure sensor, liquid supply device, and liquid pressure sensor mentioned in this embodiment, as well as their matching power supply and control switch, can also be provided by the manufacturer. The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon.

[0048] The parts not disclosed in this utility model are all prior art, and their specific structures and working principles will not be described in detail.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thin-walled steel pipe anti-deformation cutting tool, characterized by: The utility model relates to a kind of thin-walled steel pipe cutting device, including: Cylinder type handle (1), support disc (3) is fixed in the front end of cylinder type handle (1), and multiple groups of movable support head (4) are distributed in the circumferential side of support disc (3), for the inner support of thin-walled steel pipe to the cutting place close; Annular elastic film (2), a group of baffle disc (5) is fixedly sleeved on the position of cylinder type handle (1) close to support disc (3), and gap is left between baffle disc (5) and support disc (3), annular elastic film (2) is fixed in the side of support disc (3) and the side of baffle disc (5) respectively in front and back end, forming annular space (21) for cooling liquid injection, with cooling liquid injection annular space (21), annular elastic film (2) expands to circumferential side until contact with thin-walled steel pipe inner wall.

2. A thin-walled steel tube anti-deformation cutting tool according to claim 1, characterized in that: Liquid inlet hole (51) is opened in the baffle disc (5), and liquid inlet hole (51) can be connected to liquid supply equipment.

3. A thin-walled steel tube anti-deformation cutting tool according to claim 1, characterized in that: Liquid storage and injection assembly (6) is arranged on the rear side of baffle disc (5), and liquid storage and injection assembly (6) is used for injecting the cooling liquid stored in advance into annular space (21) through liquid inlet hole (51) when needed.

4. A thin-walled steel tube anti-deformation cutting tool according to claim 3, characterized in that: The liquid storage and injection assembly (6) includes a liquid storage cylinder (61) fixed on the rear wall of the baffle disc (5), the front side of the liquid storage cylinder (61) is in communication with the liquid inlet hole (51), and the liquid storage cylinder (61) surrounds the cylinder type handle (1); An internally threaded sleeve (62) is sleeved on the cylinder type handle (1) and is threadedly connected with the outer wall of the cylinder type handle (1), and a plug plate (63) is fixedly sleeved on the front end of the internally threaded sleeve (62), and the plug plate (63) extends into the liquid storage cylinder (61).

5. A thin-walled steel tube anti-deformation cutting tool according to any one of claims 1-4, characterized in that: The support disc (3) is provided with an adjusting assembly (7) for controlling the length of the plurality of movable support heads (4) extending out of the support disc (3), and the control end of the adjusting assembly (7) extends out of the rear end through the cylinder type handle (1).

6. A thin-walled steel tube anti-deformation cutting tool according to claim 5, characterized in that: The adjusting assembly (7) includes a main shaft (71) rotatably installed at the center of the support disc (3), a plurality of tracks (31) corresponding to the number of movable support heads (4) are formed around the main shaft (71) on the front wall of the support disc (3), each group of movable support heads (4) is slidably installed in a corresponding group of tracks (31), and a group of lead screws (72) are rotatably installed in the tracks (31), the movable support heads (4) are sleeved on the lead screws (72) through the threaded holes, and the end heads of the plurality of lead screws (72) are fixedly connected with driven bevel gears (73), and the driven bevel gears (73) are engaged with a driving bevel gear (74) fixed on the main shaft (71); The rear end of the main shaft (71) extends into the cylinder type handle (1).

7. A thin-walled steel tube anti-deformation cutting tool according to claim 4, characterized in that: The plug plate (63) is fixedly connected with a liquid pipe (631), and the port of the liquid pipe (631) is sealed with a cover (632).

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