Safety protection mechanism for metal pipe cutting

Abstract

The utility model discloses a safety protection mechanism for metal pipe cutting, which belongs to the technical field of metal pipe processing and comprises a cutting table and a pipe placing through groove arranged at the top of the cutting table, and a cutting rack is fixedly arranged at the top of the pipe placing through groove in a crossing manner. The safety protection mechanism for metal pipe cutting further comprises a shielding plate fixed to the top of the cutting table, and the shielding plate is used for shielding the top of the pipe containing through groove. Through cooperative use of the anti-splashing part, the shielding plate and other structures, the shielding cover can be synchronously pushed to move when the metal pipe is fed, so that the shielding cover keeps the state of shielding the end of the metal pipe, and sparks generated by cutting can be completely shielded in the pipe containing through groove and the shielding cover in cooperation with the shielding effect of the shielding plate on the outer portion of the lifting piece, so that the cutting efficiency is improved. And an isolation guardrail does not need to be used for enclosing the whole cutting table, in case of an emergency, maintenance personnel can conveniently carry out rescue operation in time, and losses caused by accidents are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal pipe processing, and particularly relates to a safety protection mechanism for metal pipe cutting. Background Art

[0002] A metal pipe is a kind of pipe made of metal. When processing metal pipes, a cutting device is needed for cutting. According to different cutting methods, the existing cutting devices can be divided into grinding wheel cutting, saw cutting, plasma cutting, laser cutting, water jet cutting, etc., which are respectively applicable to the cutting of metal pipes with different thicknesses. Most cutting methods will generate a large amount of sparks when cutting metal pipes. These sparks are relatively concentrated to form a spark beam. Due to the relatively concentrated sparks, the generated temperature will also be relatively high. When cutting, a safety protection mechanism is needed to block the splashing hazard of the spark beam.

[0003] Since a large number of high-temperature sparks will be generated when cutting metal pipes, and the existing safety protection structures for cutting are either open-cutting, which can only protect the cutting point. After the gap is cut, the sparks are easy to splash out from one end of the metal pipe and the cut gap, and the safety protection effect is relatively poor. Content of the Utility Model

[0004] The purpose of the utility model is to provide a safety protection mechanism for metal pipe cutting, so as to solve the problem that the sparks generated by cutting in the above background art are easy to leak out from the end of the metal pipe and the cut gap, and the safety protection effect is relatively poor.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A safety protection mechanism for metal pipe cutting provided by the utility model includes a cutting table and a pipe placement through groove arranged on the top of the cutting table. A cutting frame is fixedly arranged across the top of the pipe placement through groove. The safety protection mechanism for metal pipe cutting further includes:

[0007] A shielding plate fixed on the top of the cutting table, and the shielding plate is used to shield the top of the pipe placement through groove.

[0008] A splash-proof part arranged in the pipe placement through groove, and the splash-proof part is used to shield the end of the metal pipe.

[0009] The splash-proof part includes:

[0010] A shielding cover slidably arranged in the pipe placement through groove, and the shielding cover is used to shield the open end of one end of the metal pipe.

[0011] Two transverse sliding strips relatively fixed on the shielding cover, and the transverse sliding strips are slidably connected with guiding sliding grooves arranged on the inner wall of the pipe placement through groove.

[0012] A limit stop strip fixed to the horizontal sliding strip, with the limit stop strip and the shielding cover oppositely distributed on both outer sides of the guiding slideway.

[0013] Further, the anti-splash part further includes:

[0014] Two through holes oppositely arranged on the vertical surface of the cutting table, and the through holes are used to communicate one end of the guiding slideway with the outside of the cutting table.

[0015] Further, the safety protection mechanism for metal pipe cutting further includes:

[0016] A bearing block arranged on the cutting machine frame.

[0017] A downward-probing rod vertically fixed to the bottom of the bearing block, and the bottom end of the downward-probing rod is movably inserted into a through hole arranged on the top of the shielding plate.

[0018] A laser cutting head arranged at the bottom of the downward-probing rod.

[0019] A lifting part arranged on the cutting machine frame for driving the bearing block to move up and down.

[0020] Further, the shielding plate is located between the through hole and the cutting machine frame, and one side of the shielding plate is fixedly connected to the cutting machine frame.

[0021] Further, the through hole is located near the junction of the shielding plate and the cutting machine frame, and the through hole is used for the laser cutting head to extend into the pipe placing through groove to cut the metal pipe.

[0022] Further, the safety protection mechanism for metal pipe cutting further includes:

[0023] A fixing part arranged on the cutting table, and the fixing part is used for limiting and fixing the metal pipe placed in the pipe placing through groove.

[0024] Further, the fixing part includes:

[0025] A support frame fixedly spanning across the top of the pipe placing through groove.

[0026] A telescopic cylinder vertically fixed to the inner top of the support frame.

[0027] A downward-pressing double-roller seat fixed to the output end of the telescopic cylinder.

[0028] Side roller seats slidably connected to a smooth groove arranged at the inner bottom of the pipe placing through groove, and the side roller seats are oppositely distributed in the smooth groove.

[0029] A driving part for driving the two side roller seats to approach or move away from each other.

[0030] Further, the fixing part further includes:

[0031] A vertical sleeve fixedly arranged at the inner top of the support frame in a vertical direction.

[0032] A guide rod movably inserted into a guide hole provided at the bottom of the vertical sleeve, and the bottom of the guide rod is fixedly arranged at the top of the lower pressing double-roller seat.

[0033] Further, the support frame and the shielding plate are respectively located on both sides outside the cutting machine frame, and the support frame is located on one side outside the shielding cover.

[0034] Further, the side roller seats are located outside the open end of the shielding cover, and the midline between the two side roller seats and the midline of the lower pressing double-roller seat are in the same vertical plane.

[0035] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0036] 1. By the combined use of the anti-spatter part and the shielding plate and other structures, the present utility model can synchronously push the shielding cover to move when loading the metal pipe, so that it keeps the state of shielding the end of the metal pipe, and cooperates with the shielding effect of the shielding plate on the outside of the lifting member, and can completely shield the sparks generated by cutting in the pipe placing through slot and the shielding cover, realizing all-round protection, avoiding potential safety hazards or harms caused by the leakage and splashing of sparks, and improving the safety of the processing process;

[0037] 2. By the combined use of two side roller seats that can approach or move away from each other and the lower pressing double-roller seat that moves up and down, the present utility model can clamp and limit the metal pipe through the two side roller seats to realize the lateral position calibration of the metal pipe during loading, so that the lifting member can be located on the radial direction of the metal pipe. At the same time, it can limit and fix the metal pipe from the outside, avoid the axial position deviation of the metal pipe during cutting, and can also drive the metal pipe to rotate in the circumferential direction of the metal pipe, improving the cutting precision of the metal pipe;

[0038] 3. By the combined use of the anti-spatter part and the shielding plate and other structures, the present utility model makes the cutting process of the metal pipe an open cutting, which can not only reduce the space occupancy rate, but also facilitate the maintenance personnel to perform rescue operations in time in case of accidents, reducing the losses caused by accidents. Description of the Drawings

[0039] Figure 1 is an axonometric view of the present utility model;

[0040] Figure 2 is a partial cross-sectional view of the axonometric of the present utility model;

[0041] Figure 3It is a partial axonometric view of the anti-splash part in the present utility model;

[0042] Figure 4 It is a partial rear perspective axonometric view of the anti-splash part in the present utility model;

[0043] Figure 5 It is a partial cross-sectional view of the rear perspective axonometric of the present utility model;

[0044] Figure 6 It is a partial rear view sectional view of the present utility model.

[0045] In the figure: 1. Cutting table; 2. Pipe placement through groove; 3. Anti-splash part; 31. Shielding cover; 32. Guide slideway; 33. Transverse slide bar; 34. Limit stop bar; 35. Perforation; 4. Baffle plate; 5. Cutting machine frame; 6. Lifting member; 7. Fixed part; 71. Side roller seat; 72. Smooth groove; 73. Driving member; 74. Support frame; 75. Telescopic cylinder; 76. Lower pressing double roller seat; 77. Vertical sleeve; 78. Guide rod; 79. Guide hole; 8. Bearing block; 9. Probing rod; 10. Laser cutting head; 11. Through hole. Detailed implementation manners

[0046] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application.

[0047] As Figures 1 to 6 shown, a safety protection mechanism for metal pipe cutting includes a cutting table 1 and a pipe placement through groove 2 provided at the top of the cutting table 1. The pipe placement through groove 2 is used for axially feeding metal pipes. A cutting machine frame 5 is fixedly arranged across the top of the pipe placement through groove 2. A laser cutting machine is arranged inside the cutting machine frame 5. The safety protection mechanism for metal pipe cutting further includes:

[0048] A baffle plate 4 fixed to the top of the cutting table 1, and the baffle plate 4 is used to block the top of the pipe placement through groove 2.

[0049] An anti-splash part 3 arranged in the pipe placement through groove 2, and the anti-splash part 3 is used to block the end of the metal pipe.

[0050] The anti-splash part 3 includes:

[0051] A shielding cover 31 slidably arranged in the pipe placement through groove 2, and the shielding cover 31 is used to block the open end of one end of the metal pipe.

[0052] Two transverse slide bars 33 relatively fixed to the shielding cover 31, and the transverse slide bars 33 are slidably connected to guide slideways 32 arranged on the inner wall of the pipe placement through groove 2.

[0053] A limit stop bar 34 fixed to the transverse slide bar 33, and the limit stop bar 34 and the shielding cover 31 are relatively distributed on both sides outside the guide slideway 32.

[0054] After the metal tube is axially loaded into the tube placing through groove 2 and the end face of the metal tube abuts against the shielding cover 31, the shielding cover 31 will move synchronously with the metal tube under the thrust of the metal tube loading until the metal tube stops loading. The shielding cover 31 always covers the outside of one end face of the metal tube. When the metal tube is cut, it can prevent the sparks generated by cutting from leaking and splashing out from the open end of the metal tube end face, improve the safety protection effect during the cutting of the metal tube, and cooperate with the shielding plate 4 to shield the cutting part, effectively preventing the sparks from splashing out from the cutting part, further improving the safety protection effect during the cutting of the metal tube. Moreover, there is no need to use isolation guardrails to enclose a large safety area outside the cutting table 1, reducing the space occupancy rate and increasing the space utilization rate. And when an accidental failure occurs to the laser cutting machine, it is also convenient for maintenance personnel to perform rescue operations in time, reducing the losses caused by accidental failures.

[0055] As Figure 1 and Figure 2 shown, in this embodiment, the anti-splash part 3 further includes:

[0056] Two through holes 35 oppositely arranged on the vertical plane of the cutting table 1. The through holes 35 are used to connect one end of the guiding slideway 32 with the outside of the cutting table 1. With such a design, when the length of the metal tube to be cut exceeds a certain length range of the tube placing through groove 2, the shielding cover 31 can be pushed out of the tube placing through groove 2 by a certain distance, that is, the distance by which the shielding cover 31 is pushed out is less than the difference between the length of the horizontal slide bar 33 and the length of the shielding cover 31, expanding the upper limit of the cutting length of the metal tube. And after cutting, the shielding cover 31 can also be pushed to the position aligned with the lower part of the cutting machine frame 5 in the tube placing through groove 2 through a horizontal pushing operation, which is simple and convenient. Moreover, the distance by which the shielding cover 31 is pushed out of the tube placing through groove 2 can also be expanded by using the extension driving component, and automatic recovery and reset can be achieved.

[0057] As Figure 1 and Figure 2 shown, in this embodiment, the safety protection mechanism for cutting the metal tube further includes:

[0058] A bearing block 8 provided on the cutting machine frame 5.

[0059] A downward-probing rod 9 vertically fixed to the bottom of the bearing block 8. The bottom end of the downward-probing rod 9 is movably inserted into the through hole 11 provided on the top of the shielding plate 4.

[0060] A laser cutting head 10 provided at the bottom of the downward-probing rod 9.

[0061] A lifting part 6 provided on the cutting machine frame 5 for driving the bearing block 8 to move up and down. The lifting part 6 includes a lead screw vertically rotatably provided on the cutting machine frame 5. A driving motor for driving the lead screw to rotate is fixedly provided in the cutting machine frame 5. The bearing block 8 is threadedly sleeved on the lead screw.

[0062] The length of the metal tube extended in the tube placing groove 2 starts from the position of the laser cutting head 10, and the distance to the end face of the metal tube pushed towards the perforation 35 is the length that the metal tube needs to be cut. After the length of the metal tube to be cut is adjusted, the lifting part 6 can be controlled to drive the bearing block 8 to descend. The descending bearing block 8 drives the probe rod 9 and the laser cutting head 10 to descend and pass through the through hole 11 at the top of the shielding plate 4, so that the laser cutting head 10 extends into the tube placing groove 2 until it stops at a certain distance from the outside of the metal tube, and the laser output point of the laser cutting head 10 is always vertically downward, so as to facilitate cutting the metal tube.

[0063] As Figure 1 、 Figure 2 and Figure 5 shown, in this embodiment, the shielding plate 4 is located between the perforation 35 and the cutting machine frame 5, and one side of the shielding plate 4 is fixedly connected to the cutting machine frame 5.

[0064] The through hole 11 is located near the junction of the shielding plate 4 and the cutting machine frame 5, and the through hole 11 is used for the laser cutting head 10 to extend into the tube placing groove 2 to cut the metal tube.

[0065] Through the mutual cooperation of the shielding plate 4, the through hole 11, the tube placing groove 2, and the shielding cover 31, and combined with the design that the laser output point of the laser cutting head 10 is always vertically downward, when the laser cutting head 10 cuts the metal tube, it is completely in the tube placing groove 2 under the shielding plate 4, which can block part of the sparks generated at the cutting part of the metal tube, and can block the remaining sparks inside the metal tube, achieving the effect of comprehensively blocking the sparks and avoiding the leakage of sparks and increasing potential safety hazards.

[0066] As Figure 1 、 Figure 2 、 Figure 5 and Figure 6 shown, in this embodiment, the safety protection mechanism for cutting the metal tube further includes:

[0067] A fixing part 7 provided on the cutting table 1, and the fixing part 7 is used to limit and fix the metal tube placed in the tube placing groove 2.

[0068] The fixing part 7 includes:

[0069] A support frame 74 fixedly spanned across the top of the tube placing groove 2.

[0070] A telescopic cylinder 75 vertically fixed to the inner top of the support frame 74.

[0071] A downward pressure double roller seat 76 fixed to the output end of the telescopic cylinder 75. Two pressure rollers are rotatably arranged relative to each other on the downward pressure double roller seat 76, and a servo motor for directly driving one of the pressure rollers to rotate is provided on the downward pressure double roller seat 76.

[0072] A side roller seat 71 slidably connected to a smooth groove 72 provided at the inner bottom of the catheter placement groove 2, a roller is rotatably provided on the side roller seat 71, and the side roller seats 71 are distributed relatively in the smooth groove 72.

[0073] A driving member 73 for driving the two side roller seats 71 to approach or move away from each other, the driving member 73 includes a transmission spur gear rotatably provided at the center point in the smooth groove 72, two racks are relatively provided on both sides of the outside of the transmission spur gear, one ends of the two racks are respectively fixed on the opposite surfaces of the two side roller seats, the other ends of the two racks are inserted into the receiving grooves provided on the opposite surfaces of the two side roller seats, and the tooth surfaces of the racks are meshed with the tooth surfaces of the transmission spur gear.

[0074] The fixing part 7 further includes:

[0075] A vertical sleeve 77 relatively fixed to the inner top of the support frame 74.

[0076] A guide rod 78 movably inserted and connected to a guide hole 79 provided at the bottom of the vertical sleeve 77, and the bottom of the guide rod 78 is fixedly provided at the top of the lower pressing double-roller seat 76.

[0077] The initial positions of the two side roller seats 71 are located on both sides in the smooth groove 72, and the axial directions of the pressing rollers and the rollers are the same as the axial direction of the catheter placement groove 2. After the metal tube is axially fed into the catheter placement groove 2 to a specified length, the driving motor is controlled to drive the transmission spur gear to rotate. Through the meshing of the tooth surfaces between the transmission spur gear and the racks, the two racks are driven to move towards each other, so that the two side roller seats 71 approach each other until the metal tube is horizontally limited and clamped, and the rollers abut against the outer wall of the metal tube. Then, the output end of the telescopic cylinder 75 is controlled to extend downward and push the lower pressing double-roller seat 76 downward until the two pressing rollers thereon abut against the top of the outside of the metal tube, and the metal tube is clamped and fixed between the two side roller seats 71 and the lower pressing double-roller seat 76, so as to control the servo motor to drive the pressing rollers to rotate, and thus drive the metal tube to rotate through the friction force between the pressing rollers and the metal tube, so as to efficiently and accurately cut off the metal tube.

[0078] As Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown in, in this embodiment, the support frame 74 and the shielding plate 4 are respectively located on both sides outside the cutting machine frame 5, and the support frame 74 is located on one side outside the shielding cover 31.

[0079] The side roller seat 71 is located outside the open end of the shielding cover 31, and the midline between the two side roller seats 71 and the midline of the lower pressing double-roller seat 76 are in the same vertical plane.

[0080] With such a design, when the metal pipe is loaded, one end of it can be in full contact with the inner wall of the shielding cover 31. Moreover, during subsequent clamping and fixing, the position of the metal pipe in the pipe placement through groove 2 can be automatically calibrated, and an efficient clamping and fixing effect on the metal pipe can be achieved.

[0081] Working principle: First, the metal pipe is axially loaded into the pipe placement through groove 2. After the end face of the metal pipe touches the inner wall of the shielding cover 31, the metal pipe continues to be axially loaded and simultaneously pushes the shielding cover 31, the transverse sliding bar 33, and the limit stop bar 34 to move synchronously. Until the length of the metal pipe between the shielding cover 31 and the laser cutting head 10 reaches the specified length, the loading of the metal pipe stops. The shielding cover 31 always covers the open end of one end of the metal pipe, so that during subsequent cutting, it can prevent the sparks generated by cutting from leaking and splashing out from the open end of the metal pipe end, initially reducing the impact of sparks on safety. Then, control the driving motor to drive the transmission spur gear to rotate. Through the meshing of the tooth surfaces between the transmission spur gear and the rack, drive the two racks to move towards each other, so that the two side roller seats 71 approach each other until the metal pipe is horizontally limited and clamped, and the rollers touch the outer wall of the metal pipe. Then, control the output end of the telescopic cylinder 75 to extend downward and push the lower pressing double roller seat 76 downward until the two rollers on it touch the top of the outside of the metal pipe, clamping and fixing the metal pipe between the two side roller seats 71 and the lower pressing double roller seat 76, so as to facilitate the efficient and high-precision cutting of the metal pipe. Then, start the lifting member 6, which drives the bearing block 8 to move downward and drives the lower probe rod 9 and the laser cutting head 10 to move downward synchronously, and makes the laser cutting head 10 pass through the through hole 11 at the top of the shielding plate 4, so that the laser cutting head 10 extends into the pipe placement through groove 2 and stops when it is at a certain distance from the outside of the metal pipe. So that the shielding plate 4 can block the sparks generated later at the cutting point of the metal pipe and prevent them from leaking and splashing out, completely avoiding the escape of sparks and improving the safety protection effect. Then, start the laser cutting machine and the servo motor, and make the servo motor drive the roller to rotate. Thus, through the frictional force between the roller and the metal pipe, the driving of the metal pipe to rotate is realized, so that the laser cutting head 10 can efficiently cut the metal pipe circumferentially and prevent the metal pipe from undergoing lateral displacement or shaking during cutting, improving the cutting precision of the metal pipe.

[0082] The above is only the preferred embodiment of the present invention, and the parts not described in the present invention can be implemented by adopting or referring to the existing technology. Of course, the above description is not a limitation to the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions, or substitutions made by those skilled in the art within the substantial scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. A safety protection mechanism for metal pipe cutting, including a cutting table (1) and a pipe placement through groove (2) provided at the top of the cutting table (1). A cutting machine frame (5) is fixedly arranged across the top of the pipe placement through groove (2), and it is characterized in that, The safety protection mechanism for metal pipe cutting further includes: A shielding plate (4) fixed to the top of the cutting table (1), and the shielding plate (4) is used to shield the top of the pipe placement through groove (2); A splash-proof part (3) arranged in the pipe placement through groove (2), and the splash-proof part (3) is used to shield the end of the metal pipe; The splash-proof part (3) includes: A shielding cover (31) slidably arranged in the pipe placement through groove (2), and the shielding cover (31) is used to shield the open end of one end of the metal pipe; Two horizontal sliding bars (33) relatively fixed to the shielding cover (31), and the horizontal sliding bars (33) are slidably connected to the guiding sliding grooves (32) arranged on the inner wall of the pipe placement through groove (2); A limiting stop bar (34) fixed to the horizontal sliding bar (33), and the limiting stop bar (34) and the shielding cover (31) are relatively distributed on both sides outside the guiding sliding groove (32).

2. The safety protection mechanism for metal pipe cutting according to claim 1, wherein: The splash-proof part (3) further includes: Two through holes (35) relatively arranged on the vertical surface of the cutting table (1), and the through holes (35) are used to communicate one end of the guiding sliding groove (32) with the outside of the cutting table (1).

3. The safety protection mechanism for metal pipe cutting according to claim 2, characterized in that: The safety protection mechanism for metal pipe cutting further includes: A bearing block (8) arranged on the cutting machine frame (5); A downward extending rod (9) vertically fixed to the bottom of the bearing block (8), and the bottom end of the downward extending rod (9) is movably inserted into a through hole (11) arranged on the top of the shielding plate (4); A laser cutting head (10) arranged at the bottom of the downward extending rod (9); A lifting part (6) arranged on the cutting machine frame (5) for driving the bearing block (8) to move up and down.

4. The safety protection mechanism for metal pipe cutting according to claim 3, characterized in that: The shielding plate (4) is located between the through hole (35) and the cutting machine frame (5), and one side of the shielding plate (4) is fixedly connected to the cutting machine frame (5).

5. The safety protection mechanism for metal pipe cutting according to claim 4, characterized in that: The through hole (11) is located near the junction of the shielding plate (4) and the cutting machine frame (5), and the through hole (11) is used for the laser cutting head (10) to extend into the pipe placement through groove (2) to cut the metal pipe.

6. The safety protection mechanism for metal pipe cutting according to claim 1, wherein: The safety protection mechanism for metal pipe cutting further includes: A fixing part (7) arranged on the cutting table (1), and the fixing part (7) is used to limit and fix the metal pipe placed in the pipe placement through groove (2).

7. The safety protection mechanism for metal pipe cutting according to claim 6, characterized in that: The fixing part (7) includes: A support frame (74) horizontally fixed across the top of the pipe placement through groove (2); A telescopic cylinder (75) vertically fixed to the inner top of the support frame (74); A downward pressing double-roller seat (76) fixed to the output end of the telescopic cylinder (75); A side blocking roller seat (71) slidably connected to a smooth groove (72) arranged at the inner bottom of the pipe placement through groove (2), and the side blocking roller seats (71) are relatively distributed in the smooth groove (72); A driving part (73) for driving the two side blocking roller seats (71) to approach or move away from each other.

8. The safety protection mechanism for metal pipe cutting according to claim 7, wherein: The fixing part (7) further includes: Vertically arranged sleeve tubes (77) relatively fixed to the inner top of the support frame (74); A guide rod (78) is movably inserted through a guide hole (79) provided at the bottom of the vertical sleeve (77), and the bottom of the guide rod (78) is fixedly provided at the top of the downward pressing double-roller seat (76).

9. The safety protection mechanism for metal pipe cutting according to claim 8, wherein: The support frame (74) and the shielding plate (4) are respectively located on both sides outside the cutting frame (5), and the support frame (74) is located on one side outside the shielding cover (31).

10. The safety protection mechanism for metal pipe cutting according to claim 8, characterized in that: The side retaining roller seats (71) are located outside the open end of the shielding cover (31), and the midline between the two side retaining roller seats (71) and the midline of the downward pressing double-roller seat (76) are co-planar in the same vertical plane.

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