Metal pipe cutting device

Abstract

The utility model relates to a metal pipe cutting device. Comprising a machine frame, an operation table top is installed on the machine frame, and a movable pipe clamping assembly and a fixed pipe clamping assembly are installed on the operation table top. The pipe clamping device further comprises a feeding assembly, the feeding assembly comprises a feeding lead screw, the movable pipe clamping assembly is connected with the feeding lead screw through a nut, and the pipe clamping device further comprises a feeding motor used for driving the feeding lead screw to rotate. A cutter assembly is installed on the operation table top. A pipe supporting clamping jaw assembly is installed on the fixed pipe clamping assembly. The movable pipe clamping assembly comprises a pipe clamping transverse moving seat, a front fixed clamping block seat and a front movable clamping block seat are installed on the pipe clamping transverse moving seat, first clamping blocks are installed on the opposite faces of the front fixed clamping block seat and the front movable clamping block seat, and the movable pipe clamping assembly further comprises a movable pipe clamping air cylinder. According to the metal pipe cutting device, the cutting length can be accurately determined, the cutting length of a metal pipe can be conveniently adjusted, the operation process is simple, meanwhile, the metal pipe can be stably positioned in the cutting process, and cutting deflection caused by deflection of the metal pipe is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting equipment, and particularly relates to a metal pipe cutting device. Background Art

[0002] Pipe fittings are a general term for components in a pipeline system that play roles such as connection, control, direction change, flow division, sealing, and support. Pipe fittings can be classified into rubber pipe fittings, metal pipe fittings, plastic pipe fittings, etc. according to materials.

[0003] The metal pipes produced by a production line are generally long. To facilitate storage and transportation and meet the needs of customers, it is often necessary to cut the pipe fittings into appropriate lengths. Therefore, a cutting device is required to complete the cutting operation. Existing metal pipe fitting cutting devices generally include a support table and a cutting machine. The metal pipe fittings are placed on the support table and then cut by the cutting machine. The structure of the cutting device is simple.

[0004] However, when using the above metal pipe fitting cutting device for pipe cutting operations, if metal pipes of the same length need to be cut, the operator needs to measure and cut frequently. The operation is frequent and the work efficiency is low, increasing the workload of the operator, and the accuracy of manually controlling the cutting length is insufficient. In addition, when the above existing metal pipe fitting cutting device cuts a metal pipe, it cannot position the metal pipe well, easily causing the metal pipe to be skewed left and right or up and down, and then resulting in an uneven cut. Therefore, it is urgent to design a metal pipe cutting device to solve the above problems. Summary of the Utility Model

[0005] The utility model provides a metal pipe cutting device with a reasonable structural design to solve the technical problems existing in the known technology. The utility model can accurately determine the cutting length, thus facilitating the adjustment of the cutting length of the metal pipe. The operation process is simple. At the same time, it can stably position the metal pipe during the cutting process to avoid the metal pipe being skewed and causing the cutting to be skewed.

[0006] The technical solution adopted by the present utility model to solve the technical problems existing in the known technology is as follows: A metal pipe cutting device includes a frame. An operation tabletop is installed at the top of the frame. A movable pipe clamping assembly and a fixed pipe clamping assembly are installed on the operation tabletop and are arranged opposite to each other for clamping pipe fittings. It also includes a feeding assembly installed on the operation tabletop for driving the movable pipe clamping assembly to reciprocate in the direction of approaching and separating from the fixed pipe clamping assembly. The feeding assembly includes a feeding lead screw rotatably connected and horizontally arranged on the operation tabletop. The movable pipe clamping assembly is connected to the feeding lead screw through a nut. It also includes a feeding motor for driving the feeding lead screw to rotate. A cutting tool assembly corresponding to the fixed pipe clamping assembly is installed on the operation tabletop for cutting the pipe fittings clamped by the fixed pipe clamping assembly. A pipe supporting jaw assembly located between the movable pipe clamping assembly and the fixed pipe clamping assembly and with adjustable position is installed on the fixed pipe clamping assembly for clamping the tail end of the pipe fitting. The movable pipe clamping assembly includes a pipe clamping transverse movement seat installed on the feeding assembly. Oppositely arranged front fixed clamping block seats and front movable clamping block seats are installed on the pipe clamping transverse movement seat. First clamping blocks are installed on the opposite surfaces of the front fixed clamping block seats and the front movable clamping block seats. V-shaped grooves are opened on the inner side surfaces of each of the first clamping blocks. It also includes a movable pipe clamping cylinder for adjusting the distance between the front fixed clamping block seat and the front movable clamping block seat. The fixed pipe clamping assembly includes a guiding installation seat and a rear fixed clamping block seat which are arranged opposite to each other and with adjustable distance. A rear movable clamping block seat is slidably connected to the guiding installation seat. Second clamping blocks are installed on the opposite surfaces of the rear fixed clamping block seat and the rear movable clamping block seat. V-shaped grooves are opened on the inner side surfaces of each of the second clamping blocks. It also includes a fixed pipe clamping cylinder for driving the rear movable clamping block seat to move.

[0007] The advantages and positive effects of the present utility model are as follows: The present utility model provides a metal pipe cutting device. By setting the movable pipe clamping assembly and the fixed pipe clamping assembly, stable clamping and positioning operations can be carried out on the pipe fittings during the cutting process, facilitating the precise cutting operation of the cutting tool assembly on the pipe fittings, avoiding the left-right or up-down skew of the metal pipe during the cutting operation, and ensuring the flatness of the cut. By setting the feeding assembly, the movable pipe clamping assembly can be driven to reciprocate in the direction of approaching and separating from the fixed pipe clamping assembly, thereby ensuring that the pipe fitting can move forward a preset length after a single cutting is completed, and thus realizing the fixed-length cutting of the pipe fitting. By presetting the number of rotation turns of the feeding lead screw in the feeding assembly, the distance that the movable pipe clamping assembly moves forward can be set, and thus the setting of the fixed-length cutting length can be realized. Therefore, the present utility model can accurately determine the cutting length, thus facilitating the adjustment of the cutting length of the metal pipe. By setting the pipe supporting jaw assembly, clamping operation can be carried out on the tail end of the pipe fitting when performing the final fixed-length cutting on a long pipe, enabling the entire pipe fitting to automatically complete the fixed-length cutting operation. The operation process is simple, avoiding waste of products caused by the inability of the movable pipe clamping assembly in movement to achieve the final fixed-length cutting.

[0008] Preferably, it further includes a discharging assembly installed on the operation table surface and downstream of the fixed pipe clamping assembly, which is used to receive the cut pipe sections and realize automatic blanking operation; a second slideway groove is formed on the operation table surface between the movable pipe clamping assembly and the fixed pipe clamping assembly, and a second discharging slideway is installed on the second slideway groove; a first slideway groove is formed on the operation table surface below the discharging assembly, and a first discharging slideway is installed on the first slideway groove.

[0009] Preferably, the discharging assembly includes a finished product tray installed on the operation table surface, a pushing driving member is installed on the finished product tray, the pushing driving member is horizontally arranged and its extending end is perpendicular to the transmission direction of the pipe fittings, a pushing plate is installed on the extending end of the pushing driving member for pushing the cut pipe sections; a blanking notch corresponding to the first slideway groove is formed at the inner end of the finished product tray, and a valve plate mechanism for controlling the opening and closing state of the blanking notch is further included.

[0010] Preferably, the valve plate mechanism includes a blanking head valve plate inserted at the blanking notch, and further includes a valve plate linear drive installed on the bottom surface of the finished product tray, the extending end of the valve plate linear drive is connected to a valve plate mounting seat installed on the bottom surface of the blanking head valve plate, and further includes a laterally arranged valve plate guide rod fixedly connected to the valve plate mounting seat, and the valve plate guide rod is slidably connected to the finished product tray through a linear bearing.

[0011] Preferably, the feeding assembly further includes a first shaft seat and a second shaft seat arranged oppositely and installed on the operation table surface, two groups of feeding guide rods parallel to the feeding lead screw are fixedly connected between the first shaft seat and the second shaft seat, a moving mounting seat is slidably connected to the two groups of feeding guide rods through linear bearings, and the moving mounting seat is connected to the feeding lead screw through a nut; both ends of the feeding lead screw are rotatably connected to the first shaft seat and the second shaft seat respectively.

[0012] Preferably, the pipe supporting jaw assembly includes an adjustable distance cylinder seat installed on the fixed pipe clamping assembly, an adjustable distance guide rod horizontally arranged is installed on the adjustable distance cylinder seat, a sliding mounting seat is installed on the adjustable distance guide rod through a linear bearing, and a jaw adjustable distance cylinder for driving the sliding mounting seat to move along the adjustable distance guide rod is installed on the adjustable distance cylinder seat; it further includes a lifting cylinder seat installed on the sliding mounting seat, a jaw lifting seat is installed on the lifting cylinder seat through a longitudinally arranged guide rail pair, and a jaw mechanism is installed on the side surface of the jaw lifting seat; it further includes a longitudinally arranged jaw lifting cylinder installed on the lifting cylinder seat, and the extending end of the jaw lifting cylinder is connected to the jaw lifting seat.

[0013] Preferably, the jaw mechanism includes a jaw driving rack that is slidably connected to the jaw lifting seat through a longitudinally arranged guide rail pair. The jaw driving rack is a double-sided rack. Two groups of jaw members that are symmetrically arranged with respect to the jaw driving rack are pivotally connected to the jaw lifting seat. At the upper end of each jaw member, a gear portion that meshes with the jaw driving rack is provided. At the lower end of each jaw member, a jaw clamping block is installed. A V-shaped notch is formed on the inner side of each jaw clamping block. It further includes a jaw cylinder installed on the jaw lifting seat for driving the longitudinal movement of the jaw driving rack. Description of the Drawings

[0014] Figure 1 is a schematic three-dimensional structure diagram of the present utility model;

[0015] Figure 2 is a schematic three-dimensional structure diagram of the feeding assembly and the movable pipe clamping assembly in the present utility model;

[0016] Figure 3 is Figure 2 an enlarged schematic diagram of area A in

[0017] Figure 4 is a schematic three-dimensional structure diagram of the discharging assembly in the present utility model;

[0018] Figure 5 is a schematic three-dimensional structure diagram of the cutter assembly in the present utility model.

[0019] In the figure: 1. Frame; 2. Feeding assembly; 2-1. First shaft seat; 2-2. Feeding motor; 2-3. Feeding lead screw; 2-4. Feeding guide rod; 2-5. Second shaft seat; 3. Movable pipe clamping assembly; 3-1. Movable pipe clamping cylinder; 3-2. Front movable clamping block seat; 3-3. First clamping block; 3-4. Front fixed clamping block seat; 3-5. Pipe clamping transverse movement seat; 4. Operating table; 5. Pipe supporting jaw assembly; 5-1. Jaw distance adjusting cylinder; 5-2. Distance adjusting cylinder seat; 5-3. Distance adjusting guide rod; 5-4. Sliding mounting seat; 5-5. Lifting cylinder seat; 5-6. Jaw lifting cylinder; 5-7. Jaw lifting seat; 5-8. Jaw cylinder; 5-9. Jaw driving rack; 5-10. Jaw part; 5-11. Jaw clamping block; 6. Cutting tool assembly; 6-1. Swing driving part; 6-2. Extension rod; 6-3. Hinge seat; 6-4. Swing mounting seat; 6-5. Cutting motor; 6-6. Cutting transmission pair; 6-7. Sleeve; 6-8. Saw blade protection shell; 6-9. Pipe cutting saw blade; 6-10. Cutting rotating shaft; 7. Discharging assembly; 7-1. Scrap valve plate; 7-2. Valve plate mounting seat; 7-3. Valve plate guide rod; 7-4. Valve plate linear drive; 7-5. Finished product tray; 7-6. Pushing plate; 7-7. Pushing driving part; 8. First slideway groove; 9. First discharging slideway; 10. Fixed pipe clamping assembly; 10-1. Fixed pipe clamping cylinder; 10-2. Guide mounting seat; 10-3. Dovetail guide rail; 10-4. Rear movable clamping block seat; 10-5. Rear fixed clamping block seat; 10-6. Second clamping block; 11. Second discharging slideway; 12. Second slideway groove. Specific embodiments

[0020] In order to further understand the invention content, features and effects of the present invention, the following embodiments are given for detailed description as follows:

[0021] Please refer to Figure 1 , the metal pipe cutting device of the present invention includes a frame 1, an operating table 4 is installed on the top of the frame 1, and a movable pipe clamping assembly 3 and a fixed pipe clamping assembly 10 are installed on the operating table 4 and are arranged oppositely for clamping pipe fittings; it also includes a feeding assembly 2 installed on the operating table 4 for driving the movable pipe clamping assembly 3 to reciprocate in the direction of approaching and departing from the fixed pipe clamping assembly 10.

[0022] In addition, in order to improve the automation level of the cutting device and avoid manual blanking operations by workers, this embodiment further includes a discharging assembly 7 installed on the operation table 4 and located downstream of the fixed pipe clamping assembly 10, which is used to receive the cut pipe segments and achieve automatic blanking operations. A second slideway groove 12 is formed on the operation table 4 and located between the movable pipe clamping assembly 3 and the fixed pipe clamping assembly 10, and a second discharging slideway 11 is installed on the second slideway groove 12; a first slideway groove 8 is formed on the operation table 4 and located below the discharging assembly 7, and a first discharging slideway 9 is installed on the first slideway groove 8.

[0023] Further referring to Figure 2 , the above-mentioned feeding assembly 2 includes a feeding lead screw 2-3 rotatably connected and horizontally arranged on the operation table 4. The movable pipe clamping assembly 3 is connected to the feeding lead screw 2-3 through a nut, and further includes a feeding motor 2-2 for driving the rotation of the feeding lead screw 2-3. Further, the above-mentioned feeding assembly 2 further includes a first shaft seat 2-1 and a second shaft seat 2-5 oppositely arranged and installed on the operation table 4. Between the first shaft seat 2-1 and the second shaft seat 2-5, two groups of feeding guide rods 2-4 parallel to the feeding lead screw 2-3 are fixedly connected. A moving mounting seat is slidably connected to the two groups of feeding guide rods 2-4 through linear bearings, and the moving mounting seat is connected to the feeding lead screw 2-3 through a nut; both ends of the feeding lead screw 2-3 are rotatably connected to the first shaft seat 2-1 and the second shaft seat 2-5 respectively. In addition, the above-mentioned first shaft seat 2-1 and second shaft seat 2-5 are respectively located at both ends of the second slideway groove 12; the pipe clamping transverse movement seat 3-5 is installed on the moving mounting seat in the feeding assembly 2, and the fixed pipe clamping assembly 10 is installed on the above-mentioned second shaft seat 2-5.

[0024] As Figure 2 shown, the above-mentioned movable pipe clamping assembly 3 includes a pipe clamping transverse movement seat 3-5 installed on the moving mounting seat in the feeding assembly 2. On the pipe clamping transverse movement seat 3-5, a relatively arranged front fixed clamping block seat 3-4 and a front movable clamping block seat 3-2 are installed. On the opposite surfaces of the front fixed clamping block seat 3-4 and the front movable clamping block seat 3-2, first clamping blocks 3-3 are installed, and V-shaped grooves are formed on the inner side surfaces of each first clamping block 3-3. The movable pipe clamping assembly 3 further includes a movable pipe clamping cylinder 3-1 for adjusting the distance between the front fixed clamping block seat 3-4 and the front movable clamping block seat 3-2; T-shaped through grooves are formed on the outer end surfaces of the front movable clamping block seats 3-2 for clamping and installing the joints installed on the extending ends of the corresponding movable pipe clamping cylinders 3-1. In addition, a dovetail guide rail is installed on the pipe clamping transverse movement seat 3-5, and sliding grooves matched with the dovetail guide rail are formed on the bottom surfaces of the front fixed clamping block seat 3-4 and the front movable clamping block seat 3-2. Further, a screw for locking its position is screwed on the front fixed clamping block seat 3-4, and the above-mentioned screw can be in tight contact with the dovetail guide rail.

[0025] AsFigure 3 As shown, the above-mentioned fixed pipe clamping assembly 10 includes a guiding mounting seat 10-2 and a rear fixed clamping block seat 10-5 which are oppositely arranged and have an adjustable spacing. The guiding mounting seat 10-2 and the rear fixed clamping block seat 10-5 are both mounted on the second shaft seat 2-5. A rear movable clamping block seat 10-4 is slidably connected to the guiding mounting seat 10-2. In addition, a dovetail guide rail 10-3 is fixedly connected to the guiding mounting seat 10-2, and a chute which is slidably matched with the dovetail guide rail 10-3 is formed on the bottom surface of the rear movable clamping block seat 10-4. Second clamping blocks 10-6 are mounted on the opposite surfaces of the rear fixed clamping block seat 10-5 and the rear movable clamping block seat 10-4, and V-shaped grooves are formed on the inner side surfaces of the respective second clamping blocks 10-6. It further includes a fixed pipe clamping cylinder 10-1 for driving the rear movable clamping block seat 10-4 to move.

[0026] In addition, a horizontally extending strip-shaped hole is formed in the rear fixed clamping block seat 10-5, and the rear fixed clamping block seat 10-5 is locked and connected to the second shaft seat 2-5 through a bolt and a locking nut inserted in the strip-shaped hole. A T-shaped through groove is formed on the outer end surface of the rear movable clamping block seat 10-4 for clamping and mounting a joint mounted on the extending end of the corresponding fixed pipe clamping cylinder 10-1.

[0027] See further Figure 4 , the above-mentioned discharging assembly 7 includes a finished product tray 7-5 mounted on the operation table 4. A pushing driving member 7-7 is mounted on the finished product tray 7-5. The pushing driving member 7-7 is horizontally arranged and its extending end is perpendicular to the transmission direction of the pipe fittings. A pushing plate 7-6 is mounted on the extending end of the pushing driving member 7-7 for pushing the cut pipe section. A blanking notch corresponding to the first slideway groove 8 is formed at the inner end of the finished product tray 7-5. It further includes a valve plate mechanism for controlling the opening and closing state of the blanking notch.

[0028] The above-mentioned valve plate mechanism includes a blanking head valve plate 7-1 inserted at the blanking notch, and further includes a valve plate linear drive 7-4 mounted on the bottom surface of the finished product tray 7-5. The extending end of the valve plate linear drive 7-4 is connected to a valve plate mounting seat 7-2 mounted on the bottom surface of the blanking head valve plate 7-1. It further includes a horizontally arranged valve plate guide rod 7-3 fixedly connected to the valve plate mounting seat 7-2. The valve plate guide rod 7-3 is slidably connected to the finished product tray 7-5 through a linear bearing.

[0029] Before the initial fixed-length cutting operation on the pipe fittings, the end of the original pipe fittings needs to be cut off to prevent the pipe head from affecting the quality of the finished pipe section. Before cutting the pipe head, first start the valve plate mechanism in the discharge assembly 7, open the blanking slot on the finished product tray 7-5, and then cut the pipe head. The cut pipe head falls from the above-mentioned blanking slot and the first slide groove 8 to the first discharge slide 9, and then rolls from the first discharge slide 9 to the collection box arranged at its lower end; then start the valve plate mechanism in the discharge assembly 7 again, close the blanking slot on the finished product tray 7-5, and facilitate the subsequent fixed-length pipe section blanking operation.

[0030] See also Figure 1 In order to cut the pipe fittings, a cutter assembly 6 corresponding to the fixed pipe clamp assembly 10 is installed on the operating table 4. Figure 5 As shown, the above-mentioned cutter assembly 6 includes an articulated seat 6-3 installed on the operating table 4, a swinging mounting seat 6-4 is pivotally connected to the articulated seat 6-3 through a pin shaft, a sleeve 6-7 is fixedly connected to the outer end of the swinging mounting seat 6-4, a cutting shaft 6-10 is rotatably connected in the sleeve 6-7 through a rolling bearing, and a pipe cutting saw blade 6-9 is installed at the inner end of the cutting shaft 6-10. A cutting motor 6-5 with a transversely arranged output shaft is fixedly connected to the swinging mounting seat 6-4, a cutting transmission pair 6-6 is installed between the output shaft of the cutting motor 6-5 and the outer end of the cutting shaft 6-10, and the cutting transmission pair 6-6 includes a driven pulley keyed to the end of the cutting shaft 6-10, and also includes a driving pulley keyed to the output shaft of the cutting motor 6-5, and a belt is drivingly connected between the driving pulley and the driven pulley. In addition, a protective cover is provided on the outer cover of the cutting transmission pair 6-6, and a saw blade protection shell 6-8 connected to the shaft sleeve 6-7 is provided on the upper cover of the pipe cutting saw blade 6-9. The cutter assembly 6 also includes a swing driving member 6-1 pivotally connected to the frame 1, the swing driving member 6-1 adopts a hydraulic cylinder, and the cylinder barrel of the swing driving member 6-1 is pivotally connected to the frame 1 through a hinge seat and a pin shaft. An extension rod 6-2 is installed at the end of the piston rod of the swing driving member 6-1, and the extension rod 6-2 is pivotally connected to the swing mounting seat 6-4 through a pin shaft and a Y-type joint.

[0031] In addition, in this embodiment, the above-mentioned second clamping blocks 10-6 are provided in four groups, and the four groups of second clamping blocks 10-6 are arranged in pairs. A gap is left between two pairs of second clamping blocks 10-6 for the lower end of the pipe cutting saw blade 6-9 in the cutter assembly 6 to move, thereby facilitating the pipe cutting operation.

[0032] See also Figure 1 A pipe clamping claw assembly 5 is installed on the fixed pipe clamping assembly 10 and is located between the movable pipe clamping assembly 3 and the fixed pipe clamping assembly 10 and has an adjustable position, so as to clamp the tail end of the pipe.

[0033] likeFigure 2 and Figure 3 As shown, the pipe supporting clamping jaw assembly 5 includes a distance-adjusting cylinder seat 5-2 installed on the fixed clamping pipe assembly 10, a distance-adjusting guide rod 5-3 arranged laterally installed on the distance-adjusting cylinder seat 5-2, a sliding mounting seat 5-4 installed on the distance-adjusting guide rod 5-3 through a linear bearing, and a clamping jaw distance-adjusting cylinder 5-1 for driving the sliding mounting seat 5-4 to move along the distance-adjusting guide rod 5-3 installed on the distance-adjusting cylinder seat 5-2; it also includes a lifting cylinder seat 5-5 installed on the sliding mounting seat 5-4, a clamping jaw lifting seat 5-7 is installed on the lifting cylinder seat 5-5 through a longitudinally arranged guide rail pair, and a clamping jaw mechanism is installed on the side of the clamping jaw lifting seat 5-7; it also includes a longitudinally arranged clamping jaw lifting cylinder 5-6 installed on the lifting cylinder seat 5-5, and the protruding end of the clamping jaw lifting cylinder 5-6 is connected to the clamping jaw lifting seat 5-7.

[0034] Among them, the above-mentioned jaw mechanism includes a jaw driving rack 5-9 which is slidably connected to the jaw lifting seat 5-7 through a longitudinally arranged guide rail pair, and the jaw driving rack 5-9 is a double-sided rack; two groups of jaw members 5-10 symmetrically arranged about the jaw driving rack 5-9 are pivotally connected on the jaw lifting seat 5-7, and a gear part meshing with the jaw driving rack 5-9 is arranged at the upper end of each jaw member 5-10, and a jaw clamping block 5-11 is installed at the lower end of each jaw member 5-10, and a V-shaped groove is opened on the inner side surface of each jaw clamping block 5-11; it also includes a jaw cylinder 5-8 installed on the jaw lifting seat 5-7 for driving the jaw driving rack 5-9 to move longitudinally.

[0035] When making the final cut on some long tubes, the movable tube clamping assembly 3 may be unable to clamp the tail end of the tube. At this time, the tail end of the tube section can be clamped by the tube supporting jaw assembly 5, and the final cutting can be carried out smoothly. After the cutting operation is completed, the clamping mechanism in the tube supporting jaw assembly 5 releases the clamping of the tube head, and the tube head falls onto the second discharge chute 11 under the action of gravity, and rolls along the second discharge chute 11 to the collection box arranged at its lower end.

[0036] Working principle:

[0037] Under the manual operation of the staff or the action of the pipe fitting transmission device, the front end of the pipe fitting to be cut is inserted between two groups of first clamping blocks 3-3 in the movable pipe clamping assembly 3, and it is ensured that the pipe fitting extends forward by a preset distance to facilitate subsequent end cutting. Then, the movable pipe clamping cylinder 3-1 in the movable pipe clamping assembly 3 is started to clamp the pipe fitting. Then, the feed motor 2-2 in the feed assembly 2 is started to drive the movable pipe clamping assembly 3 to move a preset distance towards the fixed pipe clamping assembly 10, so that the end of the pipe fitting is inserted into the fixed pipe clamping assembly 10. Then, the fixed pipe clamping cylinder 10-1 is started to clamp the pipe fitting; the cutter assembly 6 is started, and the rotating pipe cutting saw blade 6-9 swings downward to cut off the end of the pipe fitting, and the pipe head falls onto the first discharge chute 9 and is then collected;

[0038] Then, the movable pipe clamping assembly 3 releases the clamping of the pipe fitting and retracts and resets under the drive of the feed assembly 2. After the movable pipe clamping assembly 3 resets, it clamps the pipe fitting again. At the same time, the fixed pipe clamping assembly 10 releases the clamping of the pipe fitting. Then, the feed assembly 2 is started again to drive the movable pipe clamping assembly 3 to move a preset distance towards the fixed pipe clamping assembly 10, so that the pipe fitting is fed forward by a preset length. Then, the fixed pipe clamping assembly 10 clamps the pipe fitting again, and the cutter assembly 6 is started to cut the pipe fitting clamped by the fixed pipe clamping assembly 10 to obtain a pipe section that meets the length requirement, realizing the fixed-length cutting operation of the pipe fitting;

[0039] Repeat the above operations until the last section is cut. At this time, it may occur that when the movable pipe clamping assembly 3 clamps the pipe fitting and moves forward to the maximum stroke, the length of the pipe section moved to the fixed pipe clamping assembly 10 does not meet the length of the fixed-length cutting. At this time, it is necessary to use the pipe supporting claw assembly 5 to clamp the tail end of the last pipe section and drive the pipe fitting to move forward for compensation, so as to successfully complete the fixed-length cutting of the last section. Then, the pipe supporting claw assembly 5 releases the clamping of the tail end pipe head, so that the pipe head falls onto the second discharge chute 11 and is then collected.

Claims

1. A metal pipe cutting device, characterized in that: It includes a frame (1), on the top of the frame (1) is installed an operation tabletop (4), on the operation tabletop (4) are installed a movable pipe clamping assembly (3) and a fixed pipe clamping assembly (10) arranged oppositely for clamping pipe fittings; it also includes a feeding assembly (2) installed on the operation tabletop (4) for driving the movable pipe clamping assembly (3) to reciprocate in the direction of approaching and departing from the fixed pipe clamping assembly (10); the feeding assembly (2) includes a feeding lead screw (2-3) rotatably connected and horizontally arranged on the operation tabletop (4), the movable pipe clamping assembly (3) is connected to the feeding lead screw (2-3) through a nut, and it also includes a feeding motor (2-2) for driving the feeding lead screw (2-3) to rotate; on the operation tabletop (4) is installed a cutting tool assembly (6) corresponding to the fixed pipe clamping assembly (10) for cutting the pipe fittings clamped by the fixed pipe clamping assembly (10); on the fixed pipe clamping assembly (10) is installed a pipe supporting jaw assembly (5) located between the movable pipe clamping assembly (3) and the fixed pipe clamping assembly (10) and with adjustable position for clamping the tail end of the pipe fitting; the movable pipe clamping assembly (3) includes a pipe clamping transverse movement seat (3-5) installed on the feeding assembly (2), on the pipe clamping transverse movement seat (3-5) are installed a front fixed clamping block seat (3-4) and a front movable clamping block seat (3-2) arranged oppositely, on the opposite surfaces of the front fixed clamping block seat (3-4) and the front movable clamping block seat (3-2) are both installed a first clamping block (3-3), and on the inner side surfaces of each first clamping block (3-3) are both provided with V-shaped grooves; it also includes a movable pipe clamping cylinder (3-1) for adjusting the distance between the front fixed clamping block seat (3-4) and the front movable clamping block seat (3-2); the fixed pipe clamping assembly (10) includes a guiding mounting seat (10-2) and a rear fixed clamping block seat (10-5) arranged oppositely with adjustable distance, on the guiding mounting seat (10-2) is slidably connected a rear movable clamping block seat (10-4), on the opposite surfaces of the rear fixed clamping block seat (10-5) and the rear movable clamping block seat (10-4) are both installed a second clamping block (10-6), and on the inner side surfaces of each second clamping block (10-6) are both provided with V-shaped grooves; it also includes a fixed pipe clamping cylinder (10-1) for driving the rear movable clamping block seat (10-4) to move.

2. The metal pipe cutting device according to claim 1, characterized in that: It also includes a discharging assembly (7) installed on the operation tabletop (4) and located downstream of the fixed pipe clamping assembly (10) for receiving the cut pipe sections and realizing automatic discharging operation; on the operation tabletop (4) is provided a second slideway groove (12) located between the movable pipe clamping assembly (3) and the fixed pipe clamping assembly (10), and on the second slideway groove (12) is installed a second discharging slideway (11); on the operation tabletop (4) is provided a first slideway groove (8) located below the discharging assembly (7), and on the first slideway groove (8) is installed a first discharging slideway (9).

3. The metal pipe cutting device according to claim 2, characterized in that: The discharging assembly (7) includes a finished product tray (7-5) installed on the operation table surface (4). A pushing drive member (7-7) is installed on the finished product tray (7-5). The pushing drive member (7-7) is horizontally arranged and its extending end is perpendicular to the transmission direction of the pipe fittings. A pushing plate (7-6) is installed at the extending end of the pushing drive member (7-7) for pushing the cut pipe sections. A blanking notch corresponding to the first slideway groove (8) is formed at the inner end of the finished product tray (7-5), and it further includes a valve plate mechanism for controlling the opening and closing state of the blanking notch.

4. The metal pipe cutting device according to claim 3, characterized in that: The valve plate mechanism includes a blanking head valve plate (7-1) inserted at the blanking notch, and also includes a valve plate linear drive (7-4) installed on the bottom surface of the finished product tray (7-5). The extending end of the valve plate linear drive (7-4) is connected to a valve plate mounting seat (7-2) installed on the bottom surface of the blanking head valve plate (7-1). It further includes a horizontally arranged valve plate guide rod (7-3) fixedly connected to the valve plate mounting seat (7-2). The valve plate guide rod (7-3) is slidably connected to the finished product tray (7-5) through a linear bearing.

5. The metal pipe cutting device according to claim 1, characterized in that: The feeding assembly (2) further includes a first shaft seat (2-1) and a second shaft seat (2-5) which are oppositely arranged and installed on the operation table surface (4). Two groups of feeding guide rods (2-4) parallel to the feeding lead screw (2-3) are fixedly connected between the first shaft seat (2-1) and the second shaft seat (2-5). A moving mounting seat is slidably connected to the two groups of feeding guide rods (2-4) through linear bearings, and the moving mounting seat is connected to the feeding lead screw (2-3) through a nut. The two ends of the feeding lead screw (2-3) are respectively rotatably connected to the first shaft seat (2-1) and the second shaft seat (2-5).

6. The metal pipe cutting device according to claim 1, characterized in that: The pipe supporting jaw assembly (5) includes an adjustable distance cylinder seat (5-2) installed on the fixed pipe clamping assembly (10). A horizontally arranged adjustable distance guide rod (5-3) is installed on the adjustable distance cylinder seat (5-2). A sliding mounting seat (5-4) is installed on the adjustable distance guide rod (5-3) through a linear bearing. A jaw adjustable distance cylinder (5-1) for driving the sliding mounting seat (5-4) to move along the adjustable distance guide rod (5-3) is installed on the adjustable distance cylinder seat (5-2). It further includes a lifting cylinder seat (5-5) installed on the sliding mounting seat (5-4). A jaw lifting seat (5-7) is installed on the lifting cylinder seat (5-5) through a longitudinally arranged guide rail pair. A jaw mechanism is installed on the side surface of the jaw lifting seat (5-7). It further includes a longitudinally arranged jaw lifting cylinder (5-6) installed on the lifting cylinder seat (5-5). The extending end of the jaw lifting cylinder (5-6) is connected to the jaw lifting seat (5-7).

7. The metal pipe cutting device according to claim 6, characterized in that: The jaw mechanism includes a jaw drive rack (5-9) that is slidably connected to a jaw lifting seat (5-7) through a longitudinally arranged guide rail pair. The jaw drive rack (5-9) is a double-sided rack. Two groups of jaw members (5-10) that are symmetrically arranged with respect to the jaw drive rack (5-9) are pivotally connected to the jaw lifting seat (5-7). At the upper end of each jaw member (5-10), a gear portion that meshes with the jaw drive rack (5-9) is provided. At the lower end of each jaw member (5-10), a jaw clamping block (5-11) is installed. A V-shaped notch is formed on the inner side of each jaw clamping block (5-11). It also includes a jaw cylinder (5-8) installed on the jaw lifting seat (5-7) for driving the longitudinal movement of the jaw drive rack (5-9).

Images