Explosion-proof pipe cutter

Abstract

The utility model discloses an anti-explosion pipe cutting knife which comprises a knife rest, one end of the knife rest is provided with a blade, the other end of the knife rest is fixedly provided with a limiting seat, and the knife rest is connected with a movable seat in a sliding mode. According to the anti-explosion pipe cutting knife, the knife rest, the blade, the movable base, the roller carrier, the roller, the threaded cylinder, the square pipe, a limiting base, a lead screw, a handle, a tooth groove, a pull ring, a baffle, a positioning rectangular rod, a first spring, a limiting rod, a fixing groove, a limiting block, a limiting groove and a second spring are used in cooperation, and in the whole cutting process, the anti-explosion pipe cutting knife is used in a pushing mode firstly; after the pipe is cut, the positioning mechanism loses the positioning effect on the square pipe, and the roller frame is directly driven to reset under the elastic action of the second spring. The clamping effect on the pipe is improved by continuously pushing the roller frame to slightly move by rotating the handle and the lead screw subsequently, and after the pipe is cut, the positioning effect on the square pipe is lost through the positioning mechanism, and the roller frame is directly driven to reset under the elastic action of the second spring.

Description

Technical Field

[0001] The utility model relates to the technical field of cutters, in particular to an explosion-proof pipe cutter. Background Art

[0002] The explosion-proof pipe cutter adopts advanced materials and processes, has high corrosion resistance and high-temperature resistance, and can work stably for a long time in harsh working environments. Its unique design not only considers the cutting efficiency and accuracy, but more importantly, places safety first. By using special explosion-proof technologies and materials, this cutter can effectively prevent the risk of explosion caused by sparks or high temperatures during the cutting process, ensuring the safety of operators.

[0003] A metal pipe cutter disclosed in Chinese Patent with the publication number CN211276729U includes: a mounting seat having opposite first and second ends, a pivot seat fixed to the first end and a limit seat fixed to the other end; a circular cutter for cutting metal pipes, pivotally connected to the pivot seat; a support member including a roller frame and first and second rollers mounted on the roller frame and axially distributed up and down, and the first roller, the second roller and the circular cutter cooperate to form a clamping cavity for supporting a metal pipe therein.

[0004] Regarding the above related technologies, there are some deficiencies in this device. During actual use, the user rotates the knob screw rod to drive the roller frame and the cutter to clamp the pipe, and then rotates the cutter around the pipe until the pipe is cut off. The movement of the roller frame completely depends on the drive of the screw rod, which makes the user need to frequently operate the position of the roller frame, and the operation is very inconvenient, reducing the cutting efficiency of the cutter. Therefore, it is necessary to provide an explosion-proof pipe cutter to solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an explosion-proof pipe cutter to solve at least one of the technical problems existing in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An explosion-proof pipe cutter, which includes:

[0008] A tool holder, one end of the tool holder is provided with a blade, the other end of the tool holder is fixedly installed with a limit seat, a movable seat is slidably connected to the tool holder, a roller frame is fixedly installed on the top of the movable seat, a roller is arranged on one side of the roller frame, a square pipe is slidably inserted into the limit seat, and threaded cylinders are fixedly installed at both ends of the square pipe;

[0009] The square tube is threadedly connected to a lead screw through a threaded cylinder, and one end of the lead screw is rotatably connected to the other side of the roller frame. A handle is fixedly installed at the other end of the lead screw. A second spring is fixedly connected between the lower part of one side of the limit seat and the lower part of the other side of the roller frame. A tooth groove is formed at the top of the square tube, and a positioning mechanism is arranged at the top of the limit seat.

[0010] Preferably, a plurality of installation grooves are formed on the inner wall of the limit seat. A ball is movably installed on the installation groove, and the ball is in rolling contact with the outer wall of the square tube.

[0011] Preferably, the positioning mechanism includes a fixing groove, which is formed at the top of the limit seat and communicates with the inside of the limit seat. A limit groove is formed on one side of the inner wall of the fixing groove. A limit rod is fixedly installed inside the limit groove. A limit block is sleeved on the outer wall of the limit rod, and the limit block is slidably connected to the limit groove. A first spring is sleeved on the outer wall of the limit rod above the top of the limit block. A positioning rectangular rod is fixedly installed on one side of the limit block, and the positioning rectangular rod is slidably connected to the fixing groove. The positioning rectangular rod is clamped with the tooth groove. A baffle is fixedly installed at the top of the positioning rectangular rod. A pull ring is fixedly installed at the top of the baffle. A sliding hole adapted to the limit rod is formed at the top of the pull ring, and the limit block is slidably connected to the limit rod through the sliding hole formed at the top of it.

[0012] Preferably, the bottom of the positioning rectangular rod is inclined, and the positioning rectangular rod is adapted to the tooth groove.

[0013] Preferably, a plurality of anti-slip rubber strips are adhered to the outer wall of the handle.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. Through the combined use of the tool rest, blade, moving seat, roller frame, roller, threaded cylinder, square tube, limit seat, lead screw, handle, tooth groove, pull ring, baffle, positioning rectangular rod, first spring, limit rod, fixing groove, limit block, limit groove and second spring in the present utility model, during the entire cutting process, first, by pushing, the tube is preliminarily clamped. Subsequently, by rotating the handle and the lead screw to continuously push the roller frame to move slightly, the clamping effect on the tube is improved. And after the cutting of the tube is completed, due to the positioning mechanism losing the positioning effect on the square tube, under the elastic action of the second spring, the roller frame will be directly driven to reset. During the whole process, the driving mode relying on the lead screw accounts for a relatively small proportion. There is no need for the user to frequently operate the position of the roller frame through the lead screw, which improves the use convenience and cutting efficiency and has extremely high practicability.

[0016] 2. By using the cooperation of the ball and the installation groove, during the process of sliding between the square tube and the limit seat, rolling contact will be generated with the balls on the inner wall of the limit seat. This greatly reduces the friction between the square tube and the limit seat, makes the sliding connection between the square tube and the limit seat smoother, makes it more labor-saving for the operator to push the square tube, facilitates people's operation, and reduces the wear of the square tube and the limit seat, improving the service life of the square tube and the limit seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front sectional view structural schematic diagram of the present utility model.

[0018] Figure 2 It is a structural schematic diagram of the square tube in the present utility model.

[0019] Figure 3 It is a side view structural schematic diagram of the limit seat in the present utility model.

[0020] Figure 4 For the present utility model Figure 1 The enlarged structural schematic diagram at position A.

[0021] In the figure: 1, tool rest; 2, blade; 3, moving seat; 4, roller frame; 5, roller; 6, threaded barrel; 7, square tube; 8, limit seat; 9, lead screw; 10, handle; 11, tooth groove; 12, pull ring; 13, baffle; 14, positioning rectangular rod; 15, ball; 16, first spring; 17, limit rod; 18, fixed groove; 19, installation groove; 20, limit block; 21, limit groove; 22, second spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with the specific embodiments.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0026] Please refer to Figures 1-4 , an embodiment provided by the present utility model:

[0027] An explosion-proof pipe cutter, which includes:

[0028] A tool holder 1, with a blade 2 provided at one end of the tool holder 1, a limit seat 8 fixedly installed at the other end of the tool holder 1, a movable seat 3 slidably connected to the tool holder 1, a roller holder 4 fixedly installed on the top of the movable seat 3, a roller 5 provided on one side of the roller holder 4, a square pipe 7 slidably inserted into the limit seat 8, and threaded barrels 6 fixedly installed at both ends of the square pipe 7;

[0029] The square pipe 7 is threadedly connected to a lead screw 9 through the threaded barrel 6, and one end of the lead screw 9 is rotatably connected to the other side of the roller holder 4, the other end of the lead screw 9 is fixedly installed with a handle 10, a second spring 22 is fixedly connected between the lower part on one side of the limit seat 8 and the lower part on the other side of the roller holder 4, a tooth groove 11 is opened on the top of the square pipe 7, and a positioning mechanism is provided on the top of the limit seat 8.

[0030] A plurality of installation grooves 19 are opened on the inner wall of the limit seat 8, balls 15 are movably installed on the installation grooves 19, and the balls 15 are in rolling contact with the outer wall of the square pipe 7.

[0031] In one embodiment, the positioning mechanism includes a fixing groove 18, and the fixing groove 18 is formed in the top of the limit seat 8 and communicates with the inside of the limit seat 8. A limit groove 21 is formed in one side of the inner wall of the fixing groove 18. A limit rod 17 is fixedly installed inside the limit groove 21. A limit block 20 is sleeved on the outer wall of the limit rod 17, and the limit block 20 is slidably connected with the limit groove 21. A first spring 16 is sleeved on the outer wall of the limit rod 17 above the top of the limit block 20. A positioning rectangular rod 14 is fixedly installed on one side of the limit block 20, and the positioning rectangular rod 14 is slidably connected with the fixing groove 18. The positioning rectangular rod 14 is clamped with the tooth groove 11. A baffle 13 is fixedly installed at the top of the positioning rectangular rod 14. A pull ring 12 is fixedly installed on the top of the baffle 13, achieving the positioning effect of the position of the square tube 7 during the pushing process.

[0032] In one preferred embodiment, a sliding hole adapted to the limit rod 17 is formed in the top of the limit block 20, and the limit block 20 is slidably connected with the limit rod 17 through the sliding hole formed in its top.

[0033] In one embodiment, the bottom of the positioning rectangular rod 14 is inclined, and the positioning rectangular rod 14 is adapted to the tooth groove 11, so that during the process of pushing the square tube 7 to move, no operation needs to be performed on the positioning mechanism, improving the operation convenience.

[0034] In one preferred embodiment, a plurality of anti-slip rubber strips are adhered to the outer wall of the handle 10, increasing the friction between the handle 10 and the operator's hand, achieving an anti-slip effect, and making the use of the operator more stable and reliable.

[0035] The working principle of the present utility model is as follows: The parts not involved in this device are the same as or can be implemented using the prior art. When using this cutter, the pipe to be cut is directly placed between the roller 5 and the blade 2. Then the operator directly pushes the handle 10. The handle 10 drives the square pipe 7 to slide on the limit seat 8 through the cooperation of the lead screw 9 and the threaded barrel 6. At the same time, the roller frame 4 is pushed to move by the lead screw 9. The roller 5 moves along with the roller frame 4. The movement of the roller frame 4 drives the moving seat 3 to slide on the tool rest 1. By pushing, the roller 5 directly contacts and clamps the outer wall of the pipe. During the sliding process of the square pipe 7 on the limit seat 8, the top of the square pipe 7 contacts the inclined surface at the bottom of the positioning rectangular rod 14. During the continuous movement of the square pipe 7, an upward thrust is generated on the positioning rectangular rod 14, causing the positioning rectangular rod 14 to move into the fixed slot 18. At the same time, the movement of the positioning rectangular rod 14 drives the limit block 20 to slide on the outer wall of the limit rod 17 and compress the first spring 16. With the cooperation of the elastic force of the first spring 16, the positioning rectangular rod 14 continuously engages and disengages with the tooth groove 11 until the square pipe 7 stops moving. At this time, the roller 5 and the blade 2 clamp the pipe. Through the engagement of the positioning rectangular rod 14 with the tooth groove 11 and the restriction of the right-angle surface of the positioning rectangular rod 14 on the tooth groove 11, the square pipe 7 will not automatically reset, ensuring the stability of the clamping of the roller 5 on the pipe. In addition, during the process of pushing the roller frame 4, the second spring 22 is stretched. After the roller 5 clamps the pipe under the pushing action, at this time the operator rotates the handle 10. The rotation of the handle 10 generates a screw drive between the lead screw 9 and the threaded barrel 6 and pushes the roller frame 4 to continue moving towards the pipe, further strengthening the clamping state of the roller 5 on the pipe. Then, the operator directly drives the whole device to rotate around the outer wall of the pipe by the handle 10, and cuts the pipe with the cooperation of the blade 2. During the cutting process, the handle 10 can be rotated to ensure the fitting of the roller 5 and the blade 2 to the pipe until the cutting of the pipe is completed. After the cutting is completed, directly pull the pull ring 12,The pull ring 12 drives the positioning rectangular rod 14 to move through the baffle 13, so that the positioning rectangular rod 14 disengages from the inside of the tooth groove 11. After the square tube 7 loses the positioning of the positioning rectangular rod 14, it directly drives the roller frame 4, the moving seat 3, the square tube 7, the lead screw 9 and the handle 10 to reset through the elastic action of the second spring 22. By repeating the above steps, the tube can be cut continuously. During the whole cutting process of the device, first, the tube is preliminarily clamped by pushing, and then the handle 10 and the lead screw 9 are rotated to continue to push the roller frame 4 to move slightly to improve the clamping effect on the tube. After the tube is cut, when the positioning mechanism loses the positioning effect on the square tube 7, it will directly drive the roller frame 4 to reset under the elastic action of the second spring 22. During the whole process, the driving mode relying on the lead screw accounts for a relatively small proportion, and the user does not need to frequently operate the position of the roller frame 4 through the lead screw 9, which improves the usability and cutting efficiency and has extremely high practicality.,

[0036] During the sliding process between the square tube 7 and the limit seat 8, it will have rolling contact with the balls 15 on the inner wall of the limit seat 8, which greatly reduces the friction between the square tube 7 and the limit seat 8, makes the sliding connection between the square tube 7 and the limit seat 8 smoother, makes it more labor-saving for the operator to push the square tube 7, facilitates people's operation, reduces the wear of the square tube 7 and the limit seat 8, and improves the service life of the square tube 7 and the limit seat 8.

[0037] The above are only the embodiments of the present invention, and the specific structures and characteristics and other common knowledge in the solutions are not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An explosion-proof pipe cutter, characterized in that, It includes: A tool rest (1), one end of the tool rest (1) is provided with a blade (2), the other end of the tool rest (1) is fixedly installed with a limit seat (8), a moving seat (3) is slidably connected to the tool rest (1), a roller frame (4) is fixedly installed on the top of the moving seat (3), a roller (5) is arranged on one side of the roller frame (4), a square tube (7) is slidably inserted into the limit seat (8), and threaded cylinders (6) are fixedly installed at both ends of the square tube (7); The square tube (7) is threadedly connected with a lead screw (9) through the threaded cylinder (6), and one end of the lead screw (9) is rotatably connected to the other side of the roller frame (4), the other end of the lead screw (9) is fixedly installed with a handle (10), a second spring (22) is fixedly connected between the lower side of one side of the limit seat (8) and the lower side of the other side of the roller frame (4), a tooth groove (11) is opened at the top of the square tube (7), and a positioning mechanism is arranged at the top of the limit seat (8).

2. The explosion-proof pipe cutter according to claim 1, characterized in that: A plurality of installation grooves (19) are opened on the inner wall of the limit seat (8), balls (15) are movably installed on the installation grooves (19), and the balls (15) are in rolling contact with the outer wall of the square tube (7).

3. An explosion-proof pipe cutter according to claim 1, characterized in that: The positioning mechanism includes a fixing groove (18), and the fixing groove (18) is opened at the top of the limit seat (8) and communicates with the inside of the limit seat (8), a limit groove (21) is opened on one side of the inner wall of the fixing groove (18), a limit rod (17) is fixedly installed inside the limit groove (21), a limit block (20) is sleeved on the outer wall of the limit rod (17), and the limit block (20) is slidably connected with the limit groove (21), a first spring (16) is sleeved on the outer wall of the limit rod (17) above the top of the limit block (20), a positioning rectangular rod (14) is fixedly installed on one side of the limit block (20), and the positioning rectangular rod (14) is slidably connected with the fixing groove (18), the positioning rectangular rod (14) is clamped with the tooth groove (11), a baffle (13) is fixedly installed at the top of the positioning rectangular rod (14), and a pull ring (12) is fixedly installed on the top of the baffle (13).

4. The explosion-proof pipe cutter according to claim 3, characterized in that: A sliding hole adapted to the limit rod (17) is opened at the top of the limit block (20), and the limit block (20) is slidably connected with the limit rod (17) through the sliding hole opened at its top.

5. The explosion-proof pipe cutter according to claim 3, characterized in that: The bottom of the positioning rectangular rod (14) is inclined, and the positioning rectangular rod (14) is adapted to the tooth groove (11).

6. The explosion-proof pipe cutter according to claim 1, characterized in that: A plurality of anti-slip rubber strips are bonded on the outer wall of the handle (10).

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