Straight pipe production and cutting method

Abstract

The application discloses a straight pipe production and cutting method, adopts a feeding mechanism and a cutting mechanism, and comprises the following steps: S1, feeding a pipe with a basic length L and a size error a to a pipe supporting mechanism, the actual length of the pipe is L-a~L+a, a pipe pushing and positioning device pushes the pipe to the rear of a pipe feeding device, and the rear end face of the pipe is positioned; S2, the pipe feeding device pushes the pipe to the front of the working position of the cutting mechanism, then the cutting mechanism cuts the front end of the pipe, and the remaining length of the pipe is L-b, wherein a<=b<=100 mm; S3, the pipe feeding device continues to push the pipe forward, and the cutting mechanism cuts the pipe into n straight pipe sections, n is an integer greater than 1, and the lengths of the straight pipe sections are X1, X2,..., Xn respectively. n Wherein X1+X2+...+Xn=L-b. n The application can control the length of the remaining material to be very small, and can greatly improve the utilization rate of raw materials.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of straight pipe processing, in particular to a straight pipe production and cutting method. BACKGROUND

[0002] In many industrial products, straight pipes are used. In the production process, long straight pipes need to be cut into appropriate lengths.

[0003] In the prior art, when cutting straight pipes, an axial feeding method can be used. A pipe clamping device is used to clamp the pipe, then one end of the pipe is aligned with the feeding hole of the pipe cutting mechanism, and then the pipe is pushed axially into the pipe cutting mechanism. After the pipe is pushed into the pipe cutting mechanism, the pipe is first cut into useful pipe segments, and the remaining part is tail material. In the patent with publication number CN115921676A, the raw straight pipe is cut in this way.

[0004] This pipe cutting method has the following problems. Since the pipe clamping device used to clamp the pipe cannot be pushed into the feeding hole of the pipe cutting mechanism, the remaining tail material of each raw pipe will be very long. In addition, there is a certain error in the length of the raw pipe. For example, the length error of a pipe with a length of 3020mm is generally plus or minus 5mm. In order to avoid the pipe clamping device colliding with the pipe cutting mechanism when cutting the last section of pipe, the maximum error length must be reserved on the tail material. Therefore, the length of the tail material is at least the sum of the clamping length of the pipe clamping device, the length of the feeding hole, and the maximum error length, which is very wasteful and has low raw material utilization. SUMMARY

[0005] In view of this, the purpose of the present application is to provide a straight pipe production and cutting method that can reduce tail material.

[0006] The technical solution adopted by the present application to solve the technical problem is as follows:

[0007] A straight pipe production and cutting method uses a feeding mechanism and a pipe cutting mechanism. The feeding mechanism includes a machine base, a pipe support, a pipe feeding device located behind the pipe support, and a pipe pushing and positioning device that can push the pipe backward. The pipe cutting mechanism is located in front of the pipe support. The method includes the following steps:

[0008] S1, feeding a pipe with a basic length of L and a size error of a onto the pipe support, the actual length of the pipe being L-a ~ L+a, and the pipe pushing and positioning device pushing the pipe backward onto the pipe feeding device to position the rear end face of the pipe;

[0009] S2, the pipe feeding device pushes the pipe forward into the working position of the pipe cutting mechanism, and then the pipe cutting mechanism cuts the front end of the pipe, so that the remaining length of the pipe is L-b, where a≤b≤100mm.

[0010] S3, the pipe pushing device continues to push the pipe forward, the pipe cutting mechanism cuts the pipe into n straight pipe segments, n is an integer greater than 1, and the lengths of the straight pipe segments are X1, X2, … Xn respectively n , wherein X1+X2+…+Xn=L-b. n = L-b.

[0011] In a preferred embodiment of the present application, the pipe cutting mechanism comprises a pipe cutting frame fixed relative to the machine base, a rotating sleeve rotatably mounted on the pipe cutting frame, a ring cutting blade arranged at the front end of the rotating sleeve, a pipe clamping assembly arranged on the pipe cutting frame and located behind the ring cutting blade, and a ring cutting driver capable of driving the rotating sleeve and the ring cutting blade to rotate together to cut the pipe.

[0012] In a preferred embodiment of the present application, the pipe clamping assembly comprises a fixed clamping block, a movable clamping block located above the fixed clamping block, and a pipe clamping driver capable of driving the movable clamping block to move up and down relative to the fixed clamping block, the upper surface of the fixed clamping block and the lower surface of the movable clamping block are both provided with clamping grooves for clamping the pipe.

[0013] In a preferred embodiment of the present application, the pipe pushing device comprises a push rod and a first pipe pushing driver capable of driving the push rod to move forward and backward relative to the machine base, the push rod moves forward to push the pipe forward.

[0014] In a preferred embodiment of the present application, the maximum radial dimension of the push rod is less than or equal to the outer diameter of the pipe, the front end of the push rod has a plug capable of being inserted into the inner hole of the pipe, and a step capable of abutting against the end face of the pipe is formed between the rear end of the plug and the outer sidewall of the push rod.

[0015] In a preferred embodiment of the present application, the pipe pushing device further comprises a mounting seat movably arranged on the machine base and a second pipe pushing driver arranged on the mounting seat, the push rod is movably arranged on the mounting seat and can be driven by the second pipe pushing driver to move forward and backward relative to the mounting seat, and the first pipe pushing driver is used to drive the mounting seat and the push rod to move forward and backward relative to the machine base.

[0016] In a preferred embodiment of the present application, the pipe pushing positioning device comprises a pushing piece, a horizontal pushing driver capable of driving the pushing piece to move forward and backward, and a first avoiding driver capable of driving the pushing piece to move to avoid the area swept by the push rod when the push rod moves forward.

[0017] In a preferred scheme of the present application, the base is provided with a first support, a first lifting seat is movably arranged on the first support, the first avoiding driver is arranged on the first support and is used to drive the first lifting seat to move up and down, a third support is arranged on the first lifting seat, and the horizontal pushing driver and the pushing piece are arranged on the third support.

[0018] In a preferred scheme of the present application, the supporting piece is provided with a supporting groove, and the supporting groove is a U-shaped groove or a V-shaped groove.

[0019] In a preferred scheme of the present application, the base is provided with a second avoiding driver capable of driving the supporting piece to move up and down so that the supporting piece can avoid the area swept by the pipe feeding device when the pipe feeding device moves forward.

[0020] The present application has the beneficial effect that the length of the excess material can be controlled in a very small range, and the length of the excess material can even approach the absolute value of the length error of the pipe material, so that the utilization rate of the material can be greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of a first working state of the straight pipe production device;

[0022] Figure 2 is a structural schematic view of a second working state of the straight pipe production device;

[0023] Figure 3 is Figure 1 is an enlarged view of part B in FIG. 6;

[0024] Figure 4 is Figure 2 is an enlarged view of part C in FIG. 6;

[0025] Figure 5 is a perspective view of the feeding positioning mechanism;

[0026] Figure 6 is a schematic view of the cooperation structure of the pushing rod and the pipe when the pushing rod pushes the pipe;

[0027] Figure 7 is a front view of the position relationship between the pipe feeding device and the supporting piece in the second scheme of the straight pipe production device;

[0028] Figure 8 is a structural schematic view of the second scheme of the pipe feeding device. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described clearly and completely below with reference to the drawings.

[0030] It should be noted that all directional indications, such as upper, lower, left, right, front, back, etc., in the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly. In addition, the descriptions involving "preferred", "suboptimal" and the like in the present application are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "preferred", "suboptimal" can be explicitly or implicitly included at least one of the features.

[0031] Reference Figures 1 to 8 The present application provides a straight pipe production and cutting method, which adopts a straight pipe production device. The straight pipe production device comprises a feeding mechanism and a cutting mechanism 9. The feeding mechanism comprises a machine base 1, a pipe supporting member 21 arranged on the machine base 1, a pipe feeding device located behind the pipe supporting member 21, and a pipe pushing and positioning device capable of pushing the pipe 32 backward. The cutting mechanism 9 is located in front of the pipe supporting member 21. The pipe supporting member 21 is provided with a pipe supporting groove 211, which is a U-shaped groove or a V-shaped groove. The straight pipe production and cutting method comprises the following steps:

[0032] S1, feeding a pipe 32 with a basic length L and a size error a to the pipe supporting member 21, wherein the actual length of the pipe 32 is L-a ~ L+a, and the pipe pushing and positioning device pushes the pipe 32 backward to the pipe feeding device to position the rear end face of the pipe 32;

[0033] S2, the pipe feeding device pushes the pipe 32 forward to the working position of the cutting mechanism 9, and then the cutting mechanism 9 cuts the front end of the pipe 32, so that the remaining length of the pipe 32 is L-b, wherein a≤b≤100mm;

[0034] S3, the pipe feeding device continues to push the pipe 32 forward, and the cutting mechanism 9 cuts the pipe 32 into n straight pipe segments, wherein n is an integer greater than 1, and the lengths of the straight pipe segments are X1, X2, … Xn respectively. n X1+X2+…+Xn=L-b. n

[0035] Reference Figure 2 and Figure 4 ​The pipe cutting mechanism 9 comprises a fixed pipe cutting frame 91 fixed relative to the base 1, a rotating sleeve 92 rotatably mounted on the pipe cutting frame 91, a ring cutting blade 93 arranged at the front end of the rotating sleeve 92, a pipe clamping assembly arranged on the pipe cutting frame 91 and located behind the ring cutting blade 93, and a ring cutting driver (not shown) capable of driving the rotating sleeve 92 and the ring cutting blade 93 to rotate together to cut the pipe 32. The pipe clamping assembly comprises a fixed clamping block 941, a movable clamping block 942 located above the fixed clamping block 941, and a pipe clamping driver 943 capable of driving the movable clamping block 942 to move up and down relative to the fixed clamping block 941, and the upper surface of the fixed clamping block 941 and the lower surface of the movable clamping block 942 are both provided with clamping grooves for clamping the pipe 32. The clamping grooves are preferably semicircular grooves. The ring cutting driver is an electric motor which can be connected to the rotating sleeve 92 through a gear set, a synchronous belt mechanism, a worm gear transmission pair, a chain and sprocket mechanism, etc. The pipe clamping driver 943 can be a pneumatic cylinder, an oil cylinder or an electric motor.

[0036] The method of cutting the pipe 32 can be directly cutting the pipe 32 by ring cutting, or first cutting a ring cut, and then pulling or snapping the pipe 32.

[0037] With reference to Figure 1 With Figure 5 The pipe feeding device comprises a push rod 41 and a first pipe feeding driver 31 capable of driving the push rod 41 to move forward and backward relative to the base 1, and the push rod 41 moves forward to push the pipe 32 forward.

[0038] The maximum radial dimension of the push rod 41 is less than or equal to the outer diameter of the pipe 32, the front end of the push rod 41 has a plug 411 capable of being inserted into the inner hole of the pipe 32, part or all of the outer side wall of the plug 411 is in contact with the inner side wall of the pipe 32, and a step 412 capable of abutting against the end face of the pipe 32 is formed between the rear end of the plug 411 and the outer side wall of the push rod 41.

[0039] The pipe 32 is generally a copper pipe, and the push rod 41 can be a round rod, a square rod, a hexagonal rod or other shaped rod, of which the round rod is the best. When the push rod 41 is a round rod, the maximum radial dimension of the push rod 41 is the outer diameter of the push rod 41, and when the push rod 41 is a square rod, the maximum radial dimension of the push rod 41 is the diagonal line of the cross section of the push rod 41.

[0040] Preferably, the plug 411 is a tapered rod with a diameter gradually increasing from front to rear, and the outer side wall of the rear end of the plug 411 is in contact with the inner side wall of the pipe 32.

[0041] Further, the pipe feeding device further comprises a mounting base 4 movably arranged on the base 1 and a second pipe feeding driver 42 arranged on the mounting base 4, and a push rod 41 movably arranged on the mounting base 4 and driven by the second pipe feeding driver 42 to move forward and backward relative to the mounting base 4, and the first pipe feeding driver 31 is used to drive the mounting base 4 and the push rod 41 to move forward and backward relative to the base 1. A supporting frame 44 is fixedly arranged on the mounting base 4, and a linear bearing is arranged on the supporting frame 44, the rear part of the push rod 41 is fixed with a sliding base 43, and the front part of the push rod 41 is slidably matched with the supporting frame 44 through the linear bearing, and the second pipe feeding driver 42 is in transmission connection with the sliding base 43 to drive the push rod 41 to move forward and backward relative to the mounting base 4.

[0042] The first pipe feeding driver 31 is an electric motor, a pneumatic cylinder or an oil cylinder, and the second pipe feeding driver 42 is an electric motor, a pneumatic cylinder or an oil cylinder. When the first pipe feeding driver 31 and the second pipe feeding driver 42 are electric motors, a screw pair or a gear and rack pair is needed to be used in cooperation to drive the sliding base 43 and the push rod 41 to move forward and backward.

[0043] Reference Figure 3In a preferred scheme of the present application, the push tube positioning device comprises a pushing piece 51, a horizontal pushing driver 52 capable of driving the pushing piece 51 to move back and forth, a first avoiding driver 53 capable of driving the pushing piece 51 to move so that the pushing piece 51 can avoid the area swept by the push rod 41 when the push rod 41 moves forward. The moving direction of the pushing piece 51 to avoid the push rod 41 can be the up-down direction, the left-right direction or the inclined direction. Preferably, a first support 61 is fixed on the machine base 1, a first lifting seat 62 is movably arranged on the first support 61, the first avoiding driver 53 is arranged on the first support 61 and is used to drive the first lifting seat 62 to move up and down, a third support 63 is arranged on the first lifting seat 62, and the horizontal pushing driver 52 and the pushing piece 51 are arranged on the third support 63. The pushing piece 51 comprises a base plate 511 movably arranged on the third support 63 and a push plate 512 located at the back side of the base plate 511 and capable of moving back and forth relative to the base plate 511. A buffer elastic member 513 is connected between the base plate 511 and the push plate 512. The horizontal pushing driver 52 is in transmission connection with the base plate 511 so as to drive the base plate 511, the push plate 512 and the buffer elastic member 513 to move back and forth together. The compressible length of the buffer elastic member 513 is greater than or equal to 2a. When the push plate 512 pushes the pipe 32 backward, the rear end of the pipe 32 will be pushed against the step 412 of the push rod 41. During this process, the buffer elastic member 513 can form a buffer to avoid rigid collision between the pipe 32 and the step 412 of the push rod 41, thereby preventing the pipe 32 or the push tube from being damaged. In addition, the design of the buffer elastic member 513 can also compensate for the length error of the pipe 32, so that regardless of the specific length of the pipe 32, the stroke of the base plate 511 to push the pipe 32 backward can be set as a fixed value, thereby facilitating the setting of the control program. The buffer elastic member 513 can be a cylindrical spring, a spring sheet, a conical spring, an air spring, an elastic air bag or the like.

[0044] As a further improved scheme of the above scheme, the machine base 1 is provided with a second avoiding driver 71 capable of driving the pipe supporting piece 21 to move up and down so that the pipe supporting piece 21 can avoid the area swept by the pipe feeding device when the pipe feeding device moves forward. Specifically, a second support 72 is fixed on the machine base 1, a second lifting seat 73 is movably arranged on the second support 72, the pipe supporting piece 21 is arranged on the second lifting seat 73, and the second avoiding driver 71 is mounted on the second support 72 and is in transmission connection with the second lifting seat 73. With such a design, the mounting seat 4 can be directly mounted on the guide rail of the machine base 1, so that the overall height of the pipe feeding device is relatively low, which is conducive to saving space and materials required for building the rack. The number of pipe supporting pieces 21 is generally 1-6, which is set according to the length of the pipe 32. When the relevant components of the pipe feeding device move forward to a position close to the pipe supporting piece 21, the corresponding pipe supporting piece 21 moves downward to avoid the position of the pipe feeding device, and then the pipe feeding device can continue to move forward.

[0045] Refer toFigure 7 In some embodiments of the present application, the holding member 21 can also be fixed, and a support frame 15 is arranged above the holding member 21 on the base 1. The support frame 15 is provided with a guide rail 16, and the mounting seat 4 of the pipe feeding device is slidingly arranged on the guide rail 16. The sliding seat 43 is slidingly arranged on the mounting seat 4, and the upper portion of the push rod 41 is connected with the sliding seat 43 through a vertical rod 17. In this way, when the pipe feeding device moves forward, the push rod 41 can also move along the holding groove 211 to push the pipe 32 forward.

[0046] In order to improve the movement smoothness of each moving component, the base 1 is provided with a first guide rail capable of guiding the mounting seat 4, and the mounting seat 4 is provided with a sliding block matched with the first guide rail. The mounting seat 4 is provided with a second guide rail capable of guiding the sliding seat 43. A guide column mechanism capable of guiding in the up-down direction is arranged between the first lifting seat 62 and the first support 61, a guide column mechanism capable of guiding in the up-down direction is arranged between the second lifting seat 73 and the second support 72, and a third guide column mechanism capable of guiding in the front-back direction is arranged between the base plate 511 and the third support 63.

[0047] The first avoiding driver 53, the second avoiding driver 71 and the horizontal pushing driver 52 can all be cylinders, motors or oil cylinders, and the cylinders are the best.

[0048] Reference Figure 8 In some embodiments of the present application, the pipe feeding device can also adopt other structural forms. For example, a guide rail 98 is arranged on the base 1 in the front-back direction. The pipe feeding device includes a sliding base slidingly arranged on the guide rail 98, a pipe clamping device 47 arranged on the base, and a positioning block 48 arranged on the sliding base. The base 1 is provided with a first pipe pushing driver capable of driving the sliding base to slide along the guide rail 98. The pipe clamping device 47 can adopt a structure similar to the pipe clamping assembly on the pipe cutting mechanism 9. When the rear end surface of the pipe 32 abuts against the positioning block 48, the rear end of the pipe 32 is positioned. Then the pipe clamping device 47 clamps the pipe 32, and the pipe 32 can be pushed forward under the power of the first pipe pushing driver.

[0049] The three specific production embodiments of the straight pipe row production pipe cutting method are as follows:

[0050] Embodiment 1

[0051] In this embodiment, the straight pipe row production pipe cutting method includes the following steps:

[0052] S1, the pipe 32 with basic length L of 3020mm and size error a of 5mm is fed to the pipe supporting member 21, the actual length of the pipe 32 is measured as 3018mm, the pipe 32 is pushed backward to the pipe feeding device by the pipe pushing positioning device, and the rear end surface of the pipe 32 is positioned;

[0053] S2, the value of b is set as 20mm, the pipe 32 is pushed forward to the working position of the pipe cutting mechanism 9 by the pipe feeding device, then the front end of the pipe 32 is cut off by the pipe cutting mechanism 9, so that the remaining length of the pipe 32 is 3000mm, the cut-off part is the excess material, and the length of the excess material is 18mm;

[0054] S3, the pipe 32 is continuously pushed forward by the pipe feeding device, and the pipe 32 is cut into three straight pipe sections by the pipe cutting mechanism 9, and the lengths of the straight pipe sections are X1, X2 and X3, each being 1000mm.

[0055] Example 2

[0056] In this embodiment, the straight pipe row production pipe cutting method comprises the following steps:

[0057] S1, the pipe 32 with basic length L of 3020mm and size error a of 5mm is fed to the pipe supporting member 21, the actual length of the pipe 32 is measured as 3022mm, the pipe 32 is pushed backward to the pipe feeding device by the pipe pushing positioning device, and the rear end surface of the pipe 32 is positioned;

[0058] S2, the value of b is set as 20mm, the pipe 32 is pushed forward to the working position of the pipe cutting mechanism 9 by the pipe feeding device, then the front end of the pipe 32 is cut off by the pipe cutting mechanism 9, so that the remaining length of the pipe 32 is 3000mm, the cut-off part is the excess material, and the length of the excess material is 22mm;

[0059] S3, the pipe 32 is continuously pushed forward by the pipe feeding device, and the pipe 32 is cut into four straight pipe sections by the pipe cutting mechanism 9, and the lengths of the straight pipe sections are X1, X2, X3 and X4, each being 1000mm, 600mm, 800mm and 600mm.

[0060] Example 3

[0061] In this embodiment, the straight pipe row production pipe cutting method comprises the following steps:

[0062] S1, the pipe 32 with basic length L of 2010mm and size error a of 5mm is fed to the pipe supporting member 21, the actual length of the pipe 32 is measured as 2006mm, the pipe 32 is pushed backward to the pipe feeding device by the pipe pushing positioning device, and the rear end surface of the pipe 32 is positioned;

[0063] S2, the value of b is set to 10mm, the pipe feeding device pushes the pipe 32 forward to the working position of the pipe cutting mechanism 9, then the pipe cutting mechanism 9 cuts the front end of the pipe 32, so that the remaining length of the pipe 32 is 2000mm, and the cut part is the excess material, and the length of the excess material is 6mm;

[0064] S3, the pipe feeding device continues to push the pipe 32 forward, and the pipe cutting mechanism 9 cuts the pipe 32 into four straight pipe segments, and the lengths of the straight pipe segments are X1, X2, X3 and X4 respectively, which are 500mm, 400mm, 500mm and 600mm respectively.

[0065] It can be known from the above three embodiments that the length of the excess material can be controlled in a very small range, and the length of the excess material can even approach the absolute value of the length error of the raw material of the pipe 32, so that the utilization rate of the raw material can be greatly improved.

[0066] The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application, and any equivalent structural transformation, direct or indirect application in other related technical fields within the concept of the present application, and the contents of the present application are included in the patent protection scope of the present application.

Claims

1. A method for straight pipe production and pipe cutting, characterized in that, The method employs a feeding mechanism and a pipe cutting mechanism (9). The feeding mechanism includes a base (1), a support member (21) mounted on the base (1), a pipe feeding device located behind the support member (21), and a pipe pushing and positioning device capable of pushing the pipe (32) backward. The pipe cutting mechanism (9) is located in front of the support member (21). The method includes the following steps: S1. The pipe fitting (32) with a basic length of L and a size error of a is loaded onto the support fitting (21). The actual length of the pipe fitting (32) is La ~ L+a. The pipe pushing and positioning device pushes the pipe fitting (32) backward onto the pipe feeding device to position the rear end face of the pipe fitting (32). S2. The pipe feeding device pushes the pipe fitting (32) forward into the working position of the pipe cutting mechanism (9), and then the pipe cutting mechanism (9) cuts off the front end of the pipe fitting (32), so that the remaining length of the pipe fitting (32) is Lb, where a≤b≤100mm; S3. The pipe feeding device continues to push the pipe fitting (32) forward, and the pipe cutting mechanism (9) cuts the pipe fitting (32) into n straight pipe segments, where n is an integer greater than 1, and the lengths of each straight pipe segment are X1, X2, ... X... n Where X1 + X2 + ... + X n =Lb; The pipe feeding device includes a push rod (41) and a first pipe feeding driver (31) capable of driving the push rod (41) to move back and forth relative to the base (1). When the push rod (41) moves forward, it pushes the pipe fitting (32) forward. The push tube positioning device includes a push member (51), a horizontal push driver (52) capable of driving the push member (51) to move back and forth, and a first avoidance driver (53) capable of driving the push member (51) to move so that the push member (51) can avoid the area swept by the push rod (41) when it moves forward. A first bracket (61) is fixed on the base (1). A first lifting seat (62) is movably mounted on the first bracket (61). A first clearance driver (53) is mounted on the first bracket (61) and is used to drive the first lifting seat (62) to move up and down. A third bracket (63) is mounted on the first lifting seat (62). The horizontal push driver (52) and the push member (51) are both mounted on the third bracket (63). The push member (51) includes components movably mounted on the third bracket. (63) A substrate (511) on the substrate (511), a push plate (512) located behind the substrate (511) and movable back and forth relative to the substrate (511), a buffer elastic member (513) connected between the substrate (511) and the push plate (512), the horizontal push driver (52) being connected to the substrate (511) to drive the substrate (511), the push plate (512) and the buffer elastic member (513) to move back and forth together, the compressible length of the buffer elastic member (513) being greater than or equal to 2a.

2. The straight pipe production and pipe cutting method according to claim 1, characterized in that, The pipe cutting mechanism (9) includes a pipe cutting frame (91) fixed relative to the base (1), a rotating sleeve (92) rotatably mounted on the pipe cutting frame (91), a ring cutting blade (93) disposed at the front end of the rotating sleeve (92), a pipe clamping assembly disposed on the pipe cutting frame (91) and located behind the ring cutting blade (93), and a ring cutting driver capable of driving the rotating sleeve (92) and the ring cutting blade (93) to rotate together to ring cut the pipe fitting (32).

3. The straight pipe production and pipe cutting method according to claim 2, characterized in that, The pipe clamping assembly includes a fixed clamping block (941), a movable clamping block (942) located above the fixed clamping block (941), and a pipe clamping driver (943) capable of driving the movable clamping block (942) to move up and down relative to the fixed clamping block (941). The upper surface of the fixed clamping block (941) and the lower surface of the movable clamping block (942) are both provided with clamping grooves for clamping the pipe fitting (32).

4. The straight pipe production and pipe cutting method according to claim 1, characterized in that, The maximum radial dimension of the push rod (41) is less than or equal to the outer diameter of the pipe (32). The front end of the push rod (41) has a plug (411) that can be inserted into the inner hole of the pipe (32). A step (412) that can abut against the end face of the pipe (32) is formed between the rear end of the plug (411) and the outer side wall of the push rod (41).

5. The straight pipe production and pipe cutting method according to claim 1, characterized in that, The tube feeding device further includes a mounting base (4) movably disposed on the base (1) and a second tube feeding driver (42) disposed on the mounting base (4). The push rod (41) is movably disposed on the mounting base (4) and can be driven by the second tube feeding driver (42) to move back and forth relative to the mounting base (4). The first tube feeding driver (31) is used to drive the mounting base (4) and the push rod (41) to move back and forth together relative to the base (1).

6. The straight pipe production and pipe cutting method according to claim 1, characterized in that, The support component (21) is provided with a support groove (211), which is a U-shaped groove or a V-shaped groove.

7. The straight pipe production and pipe cutting method according to claim 1, characterized in that, The base (1) is provided with a second avoidance driver (71) capable of driving the host (21) to move up and down so that the host (21) can avoid the area swept by the tube feeding device when it moves forward.

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