CN118720261A - A pipe cutting device and a pipe cutting method - Google Patents

Abstract

The present invention discloses a pipe cutting device and a cutting method, comprising a workbench, a placement groove is fixedly provided at one end of the top of the workbench, a cutting assembly is installed on the top of the workbench, and a feeding port is provided at the top of the workbench between the placement groove and the positioning block; a fixing mechanism is provided at one end of the placement groove close to the positioning block, and a second pressing plate and a first pressing plate are driven to move toward the placement groove by a telescopic plate, and then a piston is moved in a direction away from a channel by an extrusion block, and a limiting column is pushed to move by a spring, and when the second pressing plate moves downward, the pushing plate is pushed to move downward and slide with a fixed frame, so that the fixed frame drives the cross plate to separate the blocking column from the limiting hole, so that when the limiting column moves toward the vertical rod, it can slide and adapt with the limiting hole, thereby limiting the first pressing plate, so that during the cutting process of the pipe, the problem of displacement due to vibration when the pipe is fixed and limited by elasticity is avoided.

Description

A pipe cutting device and a pipe cutting method

Technical Field

The invention relates to the technical field of pipe cutting, in particular to a pipe cutting device and a pipe cutting method.

Background Art

Pipe cutting is the process of dividing pipes into required sizes. In many industries such as manufacturing, construction, and maintenance, pipes of different sizes are usually used. At this time, a cutting device is needed to cut the pipes.

Chinese Patent Publication No.: CN220516910U discloses a pipe cutting device, including a workbench, a pipe groove for placing pipes is opened in the middle of the upper surface of the workbench along its long side direction, a top plate is provided above the pipe groove, the top plate is fixedly connected to the upper surface of the workbench, a slide groove is provided in the middle of the top plate along its length direction, one end of the slide groove close to the pipe groove discharge end is connected to the outside, a slider is slidably connected in the slide groove, an arc-shaped pressure plate is provided below the slider, an elastic component for driving the arc-shaped pressure plate to move downward is provided above the slider, and a cutting component that can move up and down is provided at one end of the upper surface of the top plate close to the pipe groove discharge end.

The above device fixes the pipe during cutting by means of an elastic component, but in actual use, the elastic force of the elastic component may not be sufficient to firmly fix the pipe, especially during the cutting process, the vibration generated by the cutting component may cause the pipe to move slightly, thereby affecting the quality of the pipe cut.

Therefore, it is necessary to provide a pipe cutting device and a pipe cutting method to solve the above technical problems.

Summary of the invention

The object of the present invention is to provide a pipe cutting device and a pipe cutting method to solve the problems raised in the above background technology.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pipe cutting device, comprising a workbench, a placement groove is fixedly provided at one end of the top of the workbench, a cutting assembly is installed on the top of the workbench, and a feeding port is provided on the top of the workbench between the placement groove and the positioning block; a fixing mechanism is provided at one end of the placement groove close to the positioning block, the fixing mechanism is installed on the top of the workbench, and the fixing mechanism is transmission-connected with the cutting assembly, an auxiliary mechanism is provided at the other end of the top of the workbench, and when the cutting assembly moves downward, the cutting assembly drives the fixing mechanism to move downward.

As a further solution of the present invention: the fixing mechanism includes a vertical pole; the bottom of the vertical pole is fixedly connected to the top of the workbench, the outer periphery of the vertical pole is provided with a first pressing plate and a second pressing plate, the second pressing plate is arranged above the first pressing plate, the bottom of the first pressing plate is provided with a fixing block that cooperates with the placement groove, the top of the second pressing plate is fixedly provided with a telescopic plate, and the end of the telescopic plate away from the second pressing plate is fixedly connected to the cutting assembly.

As a further solution of the present invention: limiting columns are slidably embedded in the side walls at both ends of the first pressure plate, and a plurality of groups of limiting holes slidably adapted to the limiting columns are arranged in an array on one side of the vertical pole corresponding to the limiting columns, and blocking columns are slidably adapted in the limiting holes, and a horizontal plate is fixedly arranged at one end of the plurality of blocking columns away from the limiting columns, and the horizontal plate is slidably embedded in the side wall of the vertical pole.

As a further solution of the present invention: a channel is symmetrically arranged along the center of the first pressure plate, the limit column is slidably arranged in one end of the channel close to the vertical pole, and the limit column is elastically connected to a piston at one end away from the vertical pole, the piston is slidably connected to the channel, the fixed block is symmetrically arranged along the center of one side relative to the placement groove, an air cavity for sealing and sliding of the extrusion block is arranged on the fixed block, the end of the air cavity away from the extrusion block is connected to the channel, push plates are fixedly arranged at the bottom of both ends of the second pressure plate, a fixed frame is fixedly arranged at one end of the cross plate away from the blocking column, the fixed frame slides through the side wall of the vertical pole, and the end of the fixed frame away from the blocking column is slidably matched with the push plate.

As a further solution of the present invention: the auxiliary mechanism includes a positioning block; the positioning block is fixedly arranged on one end of the top of the workbench away from the placement slot, an extension plate is slidably arranged on the bottom of the end of the positioning block close to the placement slot, a support column is slidably arranged on the end of the positioning block relative to the placement slot, a gear is rotatably arranged in the side wall of the end of the positioning block close to the placement slot, a first tooth groove meshing with the gear transmission is arranged on the top of the extension plate, and a second tooth groove meshing with the gear is arranged on the outer periphery of the bottom of the support column.

As a further solution of the present invention: a through groove is arranged on the periphery of the support column, a first rotating plate is rotatably connected to an end of the through groove close to the placement groove, a second rotating plate is rotatably arranged on an end of the first rotating plate away from the placement groove, a slider is rotatably arranged on an end of the second rotating plate away from the first rotating plate, the slider is slidably connected to the through groove, a support seat is rotatably arranged at the rotational connection between the first rotating plate and the second rotating plate, and a support block is slidably connected to an end of the support seat away from the first rotating plate.

As a further solution of the present invention: an elastic rope is fixedly arranged at the bottom of the slider, a circular cavity is arranged at the center of the support column, a guide piece is slidably arranged in the circular cavity, the end of the guide piece away from the placement slot is fixedly connected to the positioning block, the end of the guide piece close to the placement slot is slidably matched with a clamping block, the clamping block corresponds to the slider one-to-one, and the end of the elastic rope away from the slider bypasses the side wall of the support column and is fixedly connected to the end of the clamping block away from the guide piece.

As a further solution of the present invention: square blocks are symmetrically fixed on both sides of the slider along the center, a wedge block is slidably fitted between the two groups of square blocks, the wedge block is slidably connected to the inner wall of the support column, the bottom of the slider is elastically connected to a stop column, the bottom of the stop column is slidably fitted with an arc plate, the arc plate is provided with a notch that is slidably fitted with the stop column, the arc plate is rotatably provided with the inner wall of the support column, and a connecting tube is provided between the support seat and the slider.

As a further solution of the present invention: one end of the arc plate away from the support column slides through the side wall of the positioning block, a swivel is rotatably provided on the side wall of the positioning block away from the placement groove, the arc plate and the swivel are slidably connected, a pull rope is fixedly provided on one side of the top of the swivel, a pull plate is fixedly provided on the bottom of one end of the second pressure plate, a through hole is provided at the bottom of the pull plate, a circular block that slides correspondingly with the pull plate is elastically connected to the top side wall of the workbench, and a protrusion that slides correspondingly with the through hole is provided on the side wall of the circular block.

A method for cutting using the above-mentioned pipe cutting device comprises the following steps:

S1. Place the pipe on the placement slot and push the pipe toward the positioning block;

S2, start the cutting component to cut the pipe;

S3. After the cutting of the pipe is completed, the cutting assembly is started to move and reset, and the cut pipe is removed.

Compared with the prior art, the beneficial effects of the present invention are as follows: when in use, the pipe is placed on the placement groove and then pushed in the direction of the positioning block. The positioning block allows the end of the pipe to remain parallel to the cutting disk on the cutting assembly, thereby avoiding the problem of uneven pipe ends after cutting. The cutting assembly is started to move downward to cut the pipe. During this process, the second pressure plate and the first pressure plate are driven to move toward the placement groove by the telescopic plate, and then the piston is moved away from the channel by the extrusion block. The limit column is pushed to move by the spring, and when the second pressure plate moves downward, the push plate is pushed downward to slide with the fixed frame, so that the fixed frame drives the cross plate to separate the blocking column from the limiting hole, so that when the limiting column moves toward the vertical pole, it can slide and adapt with the limiting hole, thereby limiting the first pressure plate, so that during the cutting process of the pipe, the problem of easy displacement due to vibration when the pipe is fixed and limited by elasticity is avoided.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the front three-dimensional structure of the present invention.

FIG. 2 is a schematic structural diagram of the neutral pole of the present invention.

FIG. 3 is a schematic diagram of the structure of the auxiliary mechanism in the present invention.

FIG. 4 is a schematic diagram of the structure of point A in FIG. 2 of the present invention.

FIG. 5 is a schematic diagram of the structure of point B in FIG. 2 of the present invention.

FIG. 6 is a schematic structural diagram of a cross-section of the middle portion of a positioning block in the present invention.

FIG. 7 is a schematic diagram of the structure of the first rotating plate and the second rotating plate in the present invention.

FIG8 is a schematic diagram of the structure of the transfer ring and the pull rope in the present invention.

FIG. 9 is a schematic structural diagram of a fixing member in the present invention.

FIG. 10 is a schematic structural diagram of the arc-shaped plate and the notch in the present invention.

FIG. 11 is a schematic diagram of the structure of point C in FIG. 6 of the present invention.

In the figure: 1. workbench; 2. placement groove; 3. cutting assembly; 4. positioning block; 41. extension plate; 411. gear; 42. support column; 43. first tooth groove; 44. groove; 5. vertical pole; 51. pull plate; 52. first pressure plate; 53. second pressure plate; 54. blocking column; 541. fixed frame; 55. circular block; 551. protrusion; 56. extrusion block; 57. channel; 58. limiting column; 59. push plate; 6. pull rope; 7. first rotating plate; 71. second rotating plate; 73. slider; 74. elastic rope; 75. arc plate; 751. swivel; 76. blocking column; 8. support block; 81. support seat; 9. movable plate; 10. circular cavity; 11. guide; 12. positioning strip; 13. block; 14. sliding rod; 15. nozzle; 16. annular groove.

DETAILED DESCRIPTION

Please refer to Figures 1 to 11. In the embodiment of the present invention, a pipe cutting device includes a workbench 1. A placement slot 2 is fixedly provided at one end of the top of the workbench 1. A cutting assembly 3 is installed on the top of the workbench 1. A feeding port is provided at the top of the workbench 1 between the placement slot 2 and the positioning block 4. A fixing mechanism is provided at one end of the placement slot 2 close to the positioning block 4. The fixing mechanism is installed on the top of the workbench 1, and the fixing mechanism is transmission-connected with the cutting assembly 3. When the cutting assembly 3 moves downward, the cutting assembly 3 drives the fixing mechanism to move downward. When in use, the pipe is placed on the placement slot 2. , then push the pipe to the cutting assembly 3 to a suitable position, start the cutting assembly 3 to move downward to cut the pipe. When the cutting assembly 3 moves downward, the fixing mechanism will move downward to clamp and fix the pipe on the placement slot 2, thereby avoiding the pipe from being offset due to the vibration of the cutting assembly 3 during the cutting process, thereby affecting the quality of pipe cutting. An auxiliary mechanism is provided at the other end of the top of the workbench 1, and when the pipe is placed through the positioning block 4, the end of the pipe is flush with the positioning block 4 through the positioning block 4, thereby avoiding the problem of the pipe tilting after the pipe is placed.

Preferably, the cutting assembly 3 includes a cutting disc for cutting the pipe, and a motor for driving the cutting disc to rotate is provided at one end of the cutting disc, a mounting plate is installed on the top of the motor, a telescopic cylinder is provided on the top of the mounting plate, and a mounting frame is provided on the top of the workbench 1, and the telescopic cylinder is installed on the mounting frame, and the mounting frame is slidably connected to the workbench 1, so that when cutting the pipe, the cutting disc can be moved by moving the mounting frame, so as to cut different positions of the pipe. During use, when the pipe is cut, the pipe is placed on the placement groove 2 and passes under the cutting knife. At this time, the telescopic cylinder is started to push the mounting seat downward, thereby pushing the motor and the cutting knife downward to cut the pipe. It should be noted that the cutting assembly 3 is a prior art, and the detailed structure and working principle will not be described in detail here.

Please refer to Figures 1 to 5. Preferably, the fixing mechanism includes a vertical rod 5; the vertical rod 5 is symmetrically arranged along the placement groove 2, the bottom of the vertical rod 5 is fixedly connected to the top of the workbench 1, and the outer periphery of the vertical rod 5 is provided with a first pressing plate 52 and a second pressing plate 53, the second pressing plate 53 is arranged above the first pressing plate 52, and a spring is arranged between the second pressing plate 53 and the first pressing plate 52. When the first pressing plate 52 moves downward, the second pressing plate 53 is pushed downward by the spring, and a fixing block that cooperates with the placement groove 2 is arranged at the bottom of the first pressing plate 52, and a relative "V" is arranged on the fixing block and the placement groove 2. shaped structure, so that when the fixed block moves toward the placement groove 2, the pipe placed on the placement groove 2 can be fixed, and a telescopic plate is fixedly arranged on the top of the second pressure plate 53, and the end of the telescopic plate away from the second pressure plate 53 is fixedly connected to the cutting component 3, that is, the telescopic plate is fixedly connected to the mounting seat, when the motor and the telescopic cylinder in the cutting component 3 are started, the telescopic cylinder pushes the mounting seat to move downward to cut the pipe through the cutting disk, and the second pressure plate 53 can be pushed downward by the telescopic plate, and then the first pressure plate 52 is pushed to move toward the placement groove 2 by the spring to complete the clamping and fixing of the pipe.

It should be noted that the bottom of the second pressure plate 53 is lower than the height of the cutting disk on the cutting assembly 3, so that when the cutting assembly 3 moves downward, the fixed block pushes the cutting disk to contact the pipe before contacting the pipe, and completes the clamping and fixing of the pipe. Since a spring is arranged between the second pressure plate 53 and the first pressure plate 52, when the fixed block fixes the pipe, the first pressure plate 52 no longer moves. At this time, the second pressure plate 53 continues to move with the cutting assembly 3 to avoid the problem of the cutting assembly 3 getting stuck. When the cutting of the pipe is completed, the cutting assembly 3 is started to move and reset, and then the second pressure plate 53 is driven to move and reset through the telescopic plate. Then, the first pressure plate 52 moves and resets to release the fixation of the pipe, and then the pipe can continue to be moved to continue the cutting work.

Furthermore, preferably, limiting columns 58 are slidably embedded in the side walls at both ends of the first pressure plate 52, and a plurality of groups of limiting holes slidably adapted to the limiting columns 58 are arranged in an array on one side of the vertical pole 5 corresponding to the limiting columns 58. The plurality of limiting holes are arranged in an array in a vertical direction on the vertical pole 5, and the limiting holes are arranged below the first pressure plate 52. Blocking columns 54 are slidably adapted in the limiting holes, and a cross plate is provided at one end of the plurality of blocking columns 54 away from the limiting columns 58, and the plurality of blocking columns 54 are fixedly connected by the cross plate, and the cross plate is slidably embedded in the side wall of the vertical pole 5, and the cross plate is elastically connected to the inner wall of the vertical pole 5 by a spring.

Furthermore, preferably, a channel 57 is symmetrically arranged along the center in the first pressure plate 52, a limiting column 58 is sealingly and slidably arranged in one end of the channel 57 close to the vertical rod 5, and the end of the limiting column 58 away from the vertical rod 5 is elastically connected to a piston through a spring, and the piston is sealingly and slidably connected to the channel 57, and an extrusion block 56 is symmetrically arranged along the center on one side of the fixed block relative to the placement groove 2, and an air cavity for sealing and sliding of the extrusion block 56 is arranged on the fixed block, and the end of the air cavity away from the extrusion block 56 is connected to the channel 57, and the extrusion block 56 is elastically connected to the air cavity through a spring, and a push plate 59 is fixedly arranged at the bottom of both ends of the second pressure plate 53, and an inclined surface is arranged at the bottom of the push plate 59, and the inclined surface faces the direction away from the vertical rod 5, and the push plate 59 slides through the side wall of the first pressure plate 52, and a fixed frame 541 is fixedly arranged at the end of the cross plate away from the blocking column 54, and the fixed frame 541 slides through the side wall of the vertical rod 5, and the end of the fixed frame 541 away from the blocking column 54 is slidably matched with the push plate 59.

When in use, in the initial state where no pipe is cut, the cutting assembly 3 is away from the top of the workbench 1, and the second pressing plate 53 is at the top position of the vertical rod 5. The second pressing plate 53 is connected to the first pressing plate 52 by a spring so that the first pressing plate 52 is in the middle and upper part of the vertical rod 5. At this time, the interval between the fixing block and the placement slot 2 is the largest, which is convenient for placing the pipe. The blocking column 54 is adapted to the limiting hole under the action of the spring corresponding to the cross plate, and the end of the fixing frame 541 away from the blocking column 54 protrudes from the side wall of the vertical rod 5, and the specific structure of the fixing frame 541 is in a "匚" shape. The squeezing block 56 protrudes from the fixing block under the action of the spring, and the pushing plate 59 is in the upper position of the fixing frame 541. When the pipe is cut, When cutting the pipe, place the pipe on the placement groove 2, and then push it in the direction of the positioning block 4. The positioning block 4 keeps the end of the pipe parallel to the cutting disc on the cutting assembly 3, so as to avoid the problem of uneven ends of the pipe after cutting. After the pipe is placed, start the motor to drive the cutting disc to rotate, and the telescopic cylinder pushes the cutting disc downward to cut the pipe. In this process, the mounting seat drives the second pressing plate 53 to move downward through the telescopic plate. The downward movement of the second pressing plate 53 will push the first pressing plate 52 to move toward the placement groove 2. The movement of the first pressing plate 52 will cause the fixed block to move and contact the pipe. At this time, the extrusion block 56 moves into the air cavity and contracts, so that the gas in the air cavity is compressed. The piston is transported into the channel 57, so that the piston moves away from the channel 57, and then the limiting column 58 is pushed to move by the spring, and when the second pressing plate 53 moves downward, the pushing plate 59 is pushed to move downward and slide with the fixing frame 541, so that the fixing frame 541 drives the cross plate to separate the blocking column 54 from the limiting hole, and then the limiting hole is exposed, so that when the limiting column 58 moves toward the vertical rod 5, it can slide and adapt with the limiting hole, so as to limit the first pressing plate 52, so that during the cutting process of the pipe, the problem of displacement due to vibration when the pipe is fixed and limited by elasticity is avoided; when the cutting of the pipe is completed, the cutting assembly 3 is started to move and reset, and the cutting assembly Component 3 moves and resets, causing the second pressure plate 53 to move and reset. At this time, since the limiting column 58 extends into the limiting hole, the position of the first pressure plate 52 is in a restricted state. Since a spring is arranged between the first pressure plate 52 and the second pressure plate 53, the second pressure plate 53 can move and reset while the spring is stretched. When the pushing plate 59 moves with the second pressure plate 53 and separates from the fixed frame 541, the blocking column 54 moves toward the limiting hole under the action of the corresponding spring, and then pushes the limiting column 58 out of the limiting hole. When the limiting column 58 is separated from the limiting hole, the first pressure plate 52 moves and resets under the action of the corresponding spring, thereby causing the extrusion block 56 to move and reset, and then the pipe can continue to be moved for cutting.

Please refer to Figures 1 to 3 and 6. Preferably, the auxiliary mechanism includes a positioning block 4; the positioning block 4 is fixedly arranged at one end of the top of the workbench 1 away from the placement slot 2, and an extension plate 41 is provided at the bottom of the end of the positioning block 4 close to the placement slot 2 through a spring sliding, and a support column 42 is provided at one end of the positioning block 4 relative to the placement slot 2. In a natural state, the extension plate 41 protrudes from one end of the positioning block 4, so that when placing the pipe, the end of the pipe fits with the end of the extension plate 41, so that the pipe will not tilt after being placed, and the support column 42 is initially retracted in the positioning block 4, and a gear 411 is provided in the side wall of the end of the positioning block 4 close to the placement slot 2 for rotation, and the extension plate 4 1 is provided with a first tooth groove 43 which is meshed with the gear 411, and a second tooth groove which is meshed with the gear 411 is provided on the outer periphery of the bottom of the support column 42. In this way, after the pipe is fitted with the extension plate 41, as the pipe is advanced, the extension plate 41 will move into the positioning block 4, and then the support column 42 will move out of the positioning block 4 and extend into the pipe through the cooperation of the first tooth groove 43 and the gear 411, so as to form support for the pipe, so as to avoid the pipe being away from one end of the placement groove 2 when the pipe is cut. Due to the effect of gravity, when the pipe is cut close to the bottom of the pipe, the incision of the pipe is broken downward, resulting in uneven cutting and affecting the cutting quality.

Furthermore, preferably, a through groove is provided on the periphery of the support column 42, and a plurality of through grooves are provided in a circular array along the center of the support column 42. The through groove is rotatably connected to the first rotating plate 7 at one end close to the placement groove 2, and the first rotating plate 7 is rotatably provided with a second rotating plate 71 at one end away from the placement groove 2. When the first rotating plate 7 and the second rotating plate 71 are in the through groove, the end height of the connection between the two is slightly higher than the height of the two ends thereof, and the second rotating plate 71 is rotatably provided with a slider 73 at one end away from the first rotating plate 7. The slider 73 is slidably connected to the through groove by a spring, and the rotation connection between the first rotating plate 7 and the second rotating plate 71 is rotatably provided with a The support seat 81 is slidably connected to the support block 8 at one end of the support seat 81 away from the first rotating plate 7. A groove 44 for the sliding of the support seat 81 is provided in the side wall of the positioning block 4. When in use, when the support column 42 moves toward the placement groove 2, the slider 73 slides in the through groove toward the direction of the first rotating plate 7, and then the first rotating plate 7 and the second rotating plate 71 are rotated upward relative to each other. The support of the end of the pipe is completed through the cooperation of the support block 8 and the support seat 81, avoiding the end of the pipe being cut from vibrating during the cutting process, and when cutting to the bottom end of the pipe, the pipe will not bend downward and break.

Please refer to Figures 6-7 and 9-10. Preferably, an elastic rope 74 is fixedly provided at the bottom of the slider 73, a circular cavity 10 is provided at the center of the support column 42, and a guide member 11 is slidably provided in the circular cavity 10. The end of the guide member 11 away from the placement groove 2 is fixedly connected to the positioning block 4, and the end of the guide member 11 close to the placement groove 2 is slidably matched with a clamping block 13. The clamping block 13 corresponds to the slider 73 one by one, and the end of the elastic rope 74 away from the slider 73 bypasses the side wall of the support column 42 and is fixedly connected to the end of the clamping block 13 away from the guide member 11. When in use, when the support column 42 moves toward the placement groove 2, since the guide member 11 is in a relatively fixed state, when the support column 42 moves, the clamping block 13 is in a relatively fixed state, so the elastic rope 74 will pull the slider 73 to move in the direction of the first rotating plate 7, thereby causing the first rotating plate 7 and the second rotating plate 71 to rotate relative to each other, thereby causing the support block 8 to move upward. When the support block 8 moves upward, it will support and fix the inner wall of the pipe.

The guide member 11 includes a disc and a round rod. The disc is slidably fitted with the circular cavity 10. The round rod and the disc are fixedly connected. One end of the round rod away from the disc is fixedly connected to the inner wall of the positioning block 4. The clamping block 13 is slidably fitted with the disc.

When the cam 72 is in the locking cam 42, the locking cam 73 is in a state of being moved in a direction away from the first locking cam 72 so that the cam 72 is in a state of being moved in a direction away from the first locking cam 72.

Please refer to Figure 7. Preferably, the bottom of the slider 73 is elastically connected to a stop column 76 through a spring, and the bottom of the stop column 76 is slidably matched with an arc plate 75. The arc plate 75 is provided with an array of notches that are slidably matched with the stop column 76. The arc plate 75 is rotatably provided with the inner wall of the support column 42, and is located at a position of the through groove close to the guide member 11. A connecting pipe is provided between the bottom of the support seat 81 and the top of the slider 73. When the support block 8 moves into the support seat 81, the gas between the two will be transported into the slider 73 through the connecting pipe, so that the stop column 76 moves toward the arc plate 75 under the push of the gas, thereby realizing the limiting fit of the notch on the arc plate 75.

Please refer to Figures 1 and 8. Preferably, the end of the arc plate 75 away from the support column 42 slides through the side wall of the positioning block 4, and a swivel 751 is rotatably provided on the side wall of the positioning block 4 away from the placement groove 2. The arc plate 75 and the swivel 751 are slidably connected, and a pull rope 6 is fixedly provided on one side of the top of the swivel 751. A pull plate 51 is fixedly provided on the bottom of one end of the second pressure plate 53, and a through hole is provided at the bottom of the pull plate 51. A circular block 55 that slides correspondingly with the pull plate 51 is elastically connected to the top side wall of the workbench 1, and a protrusion 551 that slides with the through hole is symmetrically provided along the center of the side wall of the circular block 55, and a matching groove that slides with the pull plate 51 is provided in the workbench 1.

Please refer to Figures 9 to 11. Preferably, a sliding rod 14 is elastically connected to the side wall of the guide member 11 near the block 13 through a spring. The top of the sliding rod 14 is provided with a side wall that slides through the guide member 11, and a movable plate 9 is slidably provided. The movable plate 9 is provided in the side wall of the support column 42 and is located on the side of the arc plate 75 away from the through groove. One end of the sliding rod 14 near the block 13 is engaged with the block 13. A positioning strip 12 is provided along the central array in the circular cavity 10. The positioning strip 12 is provided one-to-one with the through groove, and the positioning strip 12 is slidably connected to the guide member 11. The middle part of the positioning strip 12 is provided with a hollow portion for the sliding rod 14 to slide.

When in use, in the initial state, the support column 42 is retracted in the positioning block 4, and the first rotating plate 7 and the second rotating plate 71 are retracted in the through groove, the wedge block is between the square blocks, the guide member 11 is in the end of the circular cavity 10 close to the placement groove 2, the block 13 is engaged with the sliding rod 14, the notch on the arc plate 75 corresponds to the bottom of the stop column 76, the stop column 76 is retracted in the slider 73, the movable plate 9 is fitted with the arc plate 75, the extension plate 41 protrudes from the positioning block 4, and the pull plate 51 is separated from the circular block 55; when cutting the pipe, the pipe is pushed toward the extension plate 41 through the placement groove 2, and the end of the pipe is kept flush through the extension plate 41, and then the pipe makes the extension plate 41 move toward the positioning block 4, and the support column 42 moves out of the positioning block 4 through the gear 411, and moves into the pipe, and the support column 42 moves through the sliding rod 1 The locking block 13 cooperates to stretch the elastic rope 74. When the wedge block moves out of the positioning block 4, the extension plate 41 contracts in the positioning block 4, and the support column 42 extends into the pipe. At this time, the wedge block moves and separates from the square block under the action of the corresponding spring, so that the slider 73 moves toward the first rotating plate 7 in the through groove under the pulling force of the elastic rope 74, thereby causing the second rotating plate 71 and the first rotating plate 7 to rotate relative to each other, thereby allowing the support seat 81 to move in the direction away from the support column 42, that is, move toward the inner wall of the pipe and fit the inner wall of the pipe. When the support seat 81 fits the inner wall of the pipe, the support seat 81 moves toward the support block 8, so that the gas in the support seat 81 is transported to the slider 73 through the connecting pipe, thereby causing the blocking column 76 to move the downward arc plate 75 into the notch to limit the position of the slider 73, thereby completing the limiting of the support seat 81 , and multiple groups of support seats 81 can form limits independently, so they are suitable for pipes of different diameters. When the blocking column 76 moves toward the notch, it will also push the movable plate 9 to move away from the arc plate 75, and then push the sliding rod 14 to move into the guide member 11 and separate from the block 13. At the same time, the detachable clamping structure between the block 13 and the sliding rod 14 is also convenient for its maintenance and replacement, and at the same time avoids the elastic rope 74 from being in a stretched state for a long time, affecting its service life. When all support seats 81 have completed the limit of the pipe, the cutting work can be carried out, and the cutting assembly 3 is started to move downward for cutting. The cutting assembly 3 moves downward through the second pressing plate 53 to make the pull plate 51 move toward the circular block 55. Then, when the cutting is completed, the cutting assembly 3 moves and resets to make the pull plate 51 move and reset. The movement and reset of the pull plate 51 will make the protrusion 551 The swivel 751 is then pulled back from the engagement of the support column 42 and the extension plate 41, thereby releasing the support column 42 from the engagement of the support column 42.

Please refer to Figures 6 and 11. A plurality of groups of nozzles 15 are arranged along the central array at one end of the support column 42 close to the placement slot 2. The nozzles 15 face in a direction away from the circular cavity 10, and an annular groove 16 connected to the nozzle 15 is arranged in the side wall of the end of the support column 42 close to the placement slot 2. The annular groove 16 is connected to the end of the circular cavity 10 away from the placement slot 2. When in use, when the support column 42 moves toward the pipe, the guide member 11 will compress the gas in the circular cavity 10 into the annular groove 16, and then spray it toward the inner wall of the pipe through the nozzle 15, thereby cleaning the inner wall of the pipe, so that when the support seat 81 contacts and supports the inner wall of the pipe, granular foreign matter or dust on the inner wall of the pipe is avoided, which causes unbalanced support of the pipe by the support seat 81, and avoids dust adhering to the support seat 81, affecting the subsequent support and fixation of the pipe, and also avoids personnel cleaning the support seat 81.

A method for cutting using the above-mentioned pipe cutting device comprises the following steps:

S1, placing the pipe on the placement slot 2, and pushing the pipe to move toward the positioning block 4;

S2, start the cutting component 3 to cut the pipe;

S3, after the cutting of the pipe is completed, the cutting assembly 3 is started to move and reset, and the cut pipe is removed.

Claims (10)

1. The pipe cutting device comprises a workbench, wherein a placing groove is fixedly formed in one end of the top of the workbench, a cutting assembly is arranged at the top of the workbench, and a discharging opening is formed in the position, between the placing groove and a positioning block, of the top of the workbench; the positioning device is characterized in that a fixing mechanism is arranged at one end, close to the positioning block, of the placing groove, the fixing mechanism is arranged at the top of the workbench and is in transmission connection with the cutting assembly, an auxiliary mechanism is arranged at the other end of the top of the workbench, and when the cutting assembly moves downwards, the cutting assembly drives the fixing mechanism to move downwards.

2. The pipe cutting apparatus of claim 1 wherein said securing mechanism comprises a pole; the bottom of pole setting and the top fixed connection of workstation, the peripheral cover of pole setting is equipped with first clamp plate and second clamp plate, the second clamp plate sets up the top at first clamp plate, the bottom of first clamp plate is provided with the fixed block with standing groove complex, the top of second clamp plate is fixed to be provided with the expansion plate, the one end and the cutting assembly fixed connection of second clamp plate are kept away from to the expansion plate.

3. The pipe cutting device according to claim 2, wherein limiting columns are embedded in side walls at two ends of the first pressing plate in a sliding mode, a plurality of groups of limiting holes which are matched with the limiting columns in a sliding mode are arranged on one side of the vertical rods corresponding to the limiting columns in an array mode, blocking columns are matched in the limiting holes in a sliding mode, transverse plates are fixedly arranged at one ends, away from the limiting columns, of the plurality of groups of blocking columns, and the transverse plates are embedded in the side walls of the vertical rods in a sliding mode.

4. The pipe cutting device according to claim 3, wherein the first pressing plate is internally provided with a channel along central symmetry, the limiting column is slidably arranged in one end of the channel close to the vertical rod, one end of the limiting column, which is far away from the vertical rod, is elastically connected with a piston, the piston is slidably connected with the channel, one side of the fixed block, which is opposite to the placing groove, is provided with an extrusion block along central symmetry, an air cavity for sealing and sliding the extrusion block is arranged on the fixed block, one end of the air cavity, which is far away from the extrusion block, is communicated with the channel, pushing plates are fixedly arranged at bottoms of two ends of the second pressing plate, one end of the transverse plate, which is far away from the blocking column, is fixedly provided with a fixed frame, the fixed frame slidably penetrates through the side wall of the vertical rod, and one end of the fixed frame, which is far away from the blocking column, is in sliding fit with the pushing plates.

5. The pipe cutting apparatus of claim 2 wherein said auxiliary mechanism comprises a locating block; the positioning block is fixedly arranged at one end of the top of the workbench far away from the placing groove, an extension plate is arranged at the bottom of one end of the positioning block close to the placing groove in a sliding mode, a support column is arranged at one end of the positioning block opposite to the placing groove in a sliding mode, a gear is rotationally arranged on the side wall of one end of the positioning block close to the placing groove in a rotating mode, a first tooth groove meshed with the gear is arranged at the top of the extension plate, and a second tooth groove meshed with the gear is arranged at the periphery of the bottom of the support column.

6. The pipe cutting device according to claim 5, wherein the periphery of the supporting column is provided with a through groove, one end of the through groove, which is close to the placing groove, is rotationally connected with a first rotating plate, one end, which is far away from the placing groove, of the first rotating plate is rotationally provided with a second rotating plate, one end, which is far away from the first rotating plate, of the second rotating plate is rotationally provided with a sliding block, the sliding block is in sliding connection with the through groove, a supporting seat is rotationally arranged at a rotational connection position of the first rotating plate and the second rotating plate, and one end, which is far away from the first rotating plate, of the supporting seat is in sliding connection with a supporting block.

7. The pipe cutting device according to claim 6, wherein elastic ropes are fixedly arranged at the bottoms of the sliding blocks, a circular cavity is formed in the center of the supporting column, a guide piece is slidably arranged in the circular cavity, one end of the guide piece, which is far away from the placing groove, is fixedly connected with the positioning block, one end of the guide piece, which is close to the placing groove, is slidably matched with the clamping blocks, the clamping blocks are in one-to-one correspondence with the sliding blocks, and one end, which is far away from the sliding blocks, of the elastic ropes bypasses the side wall of the supporting column and one end, which is far away from the guide piece, of the clamping blocks is fixedly connected.

8. The pipe cutting device according to claim 7, wherein square blocks are fixedly arranged on two sides of the sliding block along the central symmetry, wedge blocks are slidably matched between the two square blocks, the wedge blocks are slidably connected with the inner walls of the supporting columns, a baffle column is elastically connected to the bottom of the sliding block, an arc-shaped plate is slidably matched with the bottom of the baffle column, a notch which is slidably matched with the baffle column is formed in the arc-shaped plate, the inner walls of the supporting columns are rotatably arranged on the arc-shaped plate, and a connecting pipe is arranged between the supporting seat and the sliding block.

9. The pipe cutting device according to claim 8, wherein one end of the arc plate far away from the supporting column penetrates through the side wall of the positioning block in a sliding mode, a swivel is rotatably arranged on the side wall of the positioning block far away from the placing groove, the arc plate is in sliding connection with the swivel, a pull rope is fixedly arranged on one side of the top end of the swivel, a pull plate is fixedly arranged at the bottom of one end of the second pressing plate, a through hole is formed in the bottom of the pull plate, a return block which is in corresponding sliding fit with the pull plate is elastically connected in the side wall of the top of the workbench, and a protrusion which is in sliding fit with the through hole is arranged on the side wall of the return block.

10. A method of cutting a pipe using the pipe cutting apparatus of any one of claims 1-9, comprising the steps of:

s1, placing a pipe on a placing groove and pushing the pipe to move towards a positioning block;

S2, starting a cutting assembly to cut the pipe;

S3, cutting the pipe is completed, the cutting assembly is started to enable the pipe to move and reset, and the cut pipe is taken down.