Pipe cutting control method and pipe production device

Abstract

The present application relates to the technical field of pipe processing, and in particular to a pipe cutting control method and a pipe production device. The pipe is controlled to be conveyed along a first direction and sequentially passes through a flaw detection assembly and a cutting assembly. When the pipe is conveyed, the flaw detection assembly continuously detects weld defects and accumulates a first distance; if the detection is unqualified, a second distance is accumulated. It is determined whether the first distance reaches a first cutting length and whether the second distance is 0: if both are, the cutting assembly is controlled to cut to form a first finished pipe, and the first distance is cleared and re-counted. If the first distance is less than the first cutting length and the second distance is greater than 0, it is determined whether the first distance meets a first preset condition: if it meets, a second cutting length is confirmed; when the first distance reaches this length, the cutting is controlled to form a second finished pipe, and the first distance is cleared and re-counted. In this way, the problem of how to reduce the waste of excess material in pipe cutting is solved.

Description

TECHNICAL FIELD

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

[0002] In the pipe processing process, it usually includes pipe sheet curling, welding, flaw detection and cutting. First, the flat pipe sheet is curled and shaped according to the preset pipe diameter parameters by the curling equipment, so that the pipe sheet forms a cylindrical structure with a certain arc; then, the joint of the curled pipe sheet is connected by using the welding process to form a closed pipe prototype; then, the welded pipe is detected by using the flaw detection equipment to identify possible cracks, pores and other defects at the weld, so as to ensure the safety of the pipe; finally, according to the actual application requirement, the pipe is cut to a specified length by the cutting equipment, and the pipe processing process is completed.

[0003] However, there is waste of excess material in the pipe processing process, which is mainly caused by the fact that when the cutting length is determined, it is usually operated according to the preset standard size. When the pipe is detected, the length of the pipe extending out of the preset cutting length is different. After cutting the pipe with the preset cutting length, the length of the remaining material and the damaged pipe will be cut, which will result in that many undamaged pipe materials and damaged pipes are cut together, thereby causing waste of pipe materials. SUMMARY

[0004] To solve the problem of how to reduce the waste of pipe cutting, the present application provides a pipe cutting control method and a pipe production device.

[0005] In a first aspect, the present application provides a pipe cutting control method, which comprises:

[0006] controlling the pipe to be conveyed in a first direction so that the pipe passes through a flaw detection assembly and a cutting assembly in turn;

[0007] based on the pipe being in a conveying state, controlling the flaw detection assembly to continuously detect the weld defect of the pipe, and accumulating a first distance of the pipe conveying;

[0008] based on the defect detection of the pipe being unqualified, accumulating a second distance of the pipe conveying;

[0009] determining whether the first distance reaches a first cutting length and whether the second distance is 0;

[0010] based on the first distance reaching the first cutting length and the second distance being 0, controlling the cutting assembly to cut the pipe to form a first finished product pipe, and resetting the first distance to accumulate again;

[0011] determining whether the first distance satisfies a first preset condition based on the first distance being less than the first cutting length and the second distance being greater than 0, wherein the first preset condition comprises m < L0 + L1 - X1 < X1; X1 < L0 < 2X1; m is an upper limit value of a leftover length; L0 is an arrangement distance between the flaw detection assembly and the cutting assembly; L1 is the first distance; and X1 is the first cutting length;

[0012] confirming a second cutting length based on the first distance satisfying the first preset condition, so as to satisfy L0 + L1 - 2X2 < m; and X2 is the second cutting length;

[0013] controlling the cutting assembly to cut the pipe to form a second finished pipe and resetting the first distance for reaccumulation based on the first distance reaching the second cutting length.

[0014] In some embodiments, the pipe cutting control method further comprises:

[0015] accumulating a first actual yield of the first finished pipe based on the cutting of the first finished pipe being completed;

[0016] returning to the step of determining whether the first distance reaches a first cutting length and whether the second distance is 0 based on the first actual yield being less than a first target yield.

[0017] In some embodiments, the pipe cutting control method further comprises:

[0018] controlling the cutting assembly to cut the pipe to form a waste pipe and resetting the first distance and the second distance for reaccumulation based on the cutting of the second finished pipe being completed and the first distance reaching a waste length; N is the waste length, N = L1 + L0 - 2X2 + L2;

[0019] returning to the step of determining whether the first distance reaches a first cutting length and whether the second distance is 0 based on the cutting of the waste pipe being completed.

[0020] In some embodiments, the pipe cutting control method further comprises:

[0021] determining whether the first distance reaches a third cutting length and whether the second distance is 0 based on the first actual yield reaching the first target yield; the third cutting length is less than the first cutting length;

[0022] controlling the cutting assembly to cut the pipe to form a third finished pipe and resetting the first distance for reaccumulation based on the first distance reaching the third cutting length and the second distance being 0.

[0023] In some embodiments, the pipe cutting control method further comprises:

[0024] based on the third finished pipe cutting being completed, accumulating a second actual yield of the third finished pipe;

[0025] based on the second actual yield being less than a second target yield, returning to execute the step of judging whether the first distance reaches a third cutting length and whether the second distance is 0 based on the first actual yield reaching the first target yield.

[0026] In some embodiments, before the step of judging whether the first distance reaches a third cutting length and whether the second distance is 0 based on the first actual yield reaching the first target yield, the pipe cutting control method further comprises:

[0027] based on the first actual yield reaching the first target yield, adjusting the arrangement distance between the flaw detection assembly and the cutting assembly to satisfy 2X3≤L0<3X3; X3 is the third cutting length.

[0028] In some embodiments, the pipe cutting control method further comprises:

[0029] based on the first distance being less than the third cutting length and the second distance being greater than 0, judging whether the first distance satisfies a second preset condition; wherein the second preset condition comprises m<L0+L1-2X3<X3;

[0030] based on the first distance satisfying the second preset condition, confirming a fourth cutting length to satisfy L0+L1-X4<m; wherein X4>2X3; X4>X1; Z is the fourth cutting length.

[0031] based on the first distance reaching the fourth cutting length, controlling the cutting assembly to cut the pipe to form a fourth finished pipe, and resetting the first distance to accumulate again.

[0032] In some embodiments, the pipe cutting control method further comprises:

[0033] based on the fourth finished pipe cutting being completed and the first distance reaching a waste length, controlling the cutting assembly to cut the pipe to form a waste pipe, and resetting the first distance and the second distance to accumulate again; N is the waste length, N=L1+L0-X4+L2.

[0034] return to performing the step of judging whether the first distance reaches a third cutting length and judging whether the second distance is 0 based on the first actual yield reaching the first target yield based on the waste pipe cutting being completed.

[0035] In a second aspect, the present application provides a pipe production device applied to the pipe cutting control method in any of the first aspect, the pipe production device comprising:

[0036] a pipe unwinding assembly configured to unwind a pipe raw material;

[0042] a pipe rolling assembly configured to roll a plate material led out from the pipe unwinding assembly into a tubular first semi-finished product;

[0043] a pipe welding assembly configured to weld a joint of the first semi-finished product to form a second semi-finished product;

[0044] a pipe shaping assembly configured to shape the second semi-finished product into a pipe; a pipe flaw detection assembly configured to detect a weld defect of the pipe led out from the pipe shaping assembly;

[0045] Figure 1 a pipe cutting assembly configured to cut the pipe subjected to the weld defect detection.

[0046] In some embodiments, a distance between the pipe flaw detection assembly and the pipe cutting assembly is adjustable. Figure 2 To solve the problem of how to reduce the waste of pipe cutting, the present application has the following advantages:

[0047] Figure 3 The pipe is controlled to be conveyed along a first direction so as to sequentially pass through the pipe flaw detection assembly and the pipe cutting assembly, the pipe flaw detection assembly is controlled to continuously detect the weld defect and accumulate a first distance based on the conveying state, and meanwhile, a second distance is accumulated when the defect detection is unqualified, so as to obtain the quality state and the conveying progress of the pipe in real time and provide accurate data support for subsequent cutting operation; when the first distance reaches a first cutting length and the second distance is 0, the pipe cutting assembly is controlled to cut the pipe to form a first finished pipe, and the first distance is cleared to be re-accumulated, so as to ensure that the qualified pipe is cut according to the standard length; when the first distance is less than the first cutting length and the second distance is greater than 0, it is judged whether the first distance meets a first preset condition, a second cutting length is confirmed based on the first preset condition being met to meet L0+L1-2X2 Accordingly, the pipe waste is effectively utilized, and the waste of pipe cutting is reduced. Attached Figure Description

[0045] Figure 1 A flowchart illustrating a pipe fitting cutting control method according to one embodiment is shown;

[0046] Figure 2 A simplified schematic diagram of a pipe fitting production apparatus according to one embodiment is shown;

[0047] Figure 3 A simplified schematic diagram of a pipe fitting production apparatus according to one embodiment is shown during production.

[0048] Reference numerals: Unwinding assembly 10; Rolling assembly 20; Welding assembly 30; Shaping assembly 40; Flaw detection assembly 50; Cutting assembly 60. Detailed Implementation

[0049] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0050] As used herein, the term "includes" and its variants are to be read as open-ended terms that mean "including, but not limited to." The term "based on" is to be construed as "based at least in part on." The terms "one embodiment" and "an embodiment" are to be read as "at least one embodiment." The term "another embodiment" is to be read as "at least one other embodiment." The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," "longitudinal," and similar terms are used for orientation or positional relationships based on the orientation or position as shown in the drawings. These terms are used merely for purposes of description and are not intended to limit the indicated device, element, or component to a particular position, orientation, or configuration, unless otherwise indicated by the specific context. Also, these terms are used in conjunction with the terms "coupled" and "connected" to describe the position, orientation, and connection of a device, element, or component relative to another device, element, or component. Any of these terms can be used to indicate a direct connection or a connection with one or more intervening devices, elements, or components. Unless otherwise noted, the terms "coupled" and "connected," as well as variations thereof, are to be construed as having the same general meaning. Also, the terms "first," "second," and the like are used merely to describe different components and do not connote any specific importance or significance. The terms "plurality" and "a plurality" connote two or more.

[0051] In the pipe processing process, there is waste of excess material, mainly due to the determination of the cutting length, usually according to the preset standard size, when the pipe detects the flaw, the length of the pipe is different from the preset cutting length, the pipe with the preset cutting length is cut, and the length of the remaining material and the pipe with damage is cut, which will cause more undamaged pipe material and damaged pipe to be cut together, resulting in waste of pipe material. Embodiment One

[0052] To solve the above problems, the pipe cutting control method provided in the embodiment involves a pipe production device including a unwinding assembly 10, a rounding assembly 20, a welding assembly 30, a shaping assembly 40, a flaw detection assembly 50, and a cutting assembly 60.

[0053] The pipe raw material is continuously supplied through the unwinding assembly 10. The plate material led out from the unwinding assembly 10 is wound into a tubular first semi-finished product through the coiling assembly 20. The splicing of the first semi-finished product is welded through the welding assembly 30 to form a second semi-finished product, so that the pipe is preliminarily formed. Then, the second semi-finished product after welding is shaped through the shaping assembly 40 to form a pipe. The welding defect of the pipe led out from the shaping assembly 40 is detected through the flaw detection assembly 50, so that the quality of the pipe entering the cutting link is controllable. The pipe after the welding defect detection is cut through the cutting assembly 60 to form a first finished pipe. Through the cooperation of the above components, a complete production process is realized.

[0054] In the embodiment, as shown in Figure 1 The pipe cutting control method includes steps S10-S50, which will be described in detail below.

[0055] In step S10, the pipe is controlled to be sequentially conveyed in a first direction, so that the pipe sequentially passes through the flaw detection assembly 50 and the cutting assembly 60, ensuring the orderliness of the pipe cutting process.

[0056] In step S20, based on the pipe being in a conveying state, the flaw detection assembly 50 is controlled to continuously detect the welding defect of the pipe, so that whether the pipe has a quality problem can be found in time, and a first distance of the pipe conveying through the cutting assembly 60 is accumulated, so that the conveying progress of the pipe can be accurately grasped, and data support for subsequent judgment of the cutting timing is provided, so that real-time monitoring of the pipe quality and the conveying condition is realized.

[0057] In step S30, based on the defect detection of the pipe being unqualified, a second distance of the pipe conveying is accumulated, and a length of the pipe continuously conveying after the defect is recorded, that is, a length of the pipe having the defect, which provides a basis for subsequent judgment of whether the cutting parameter needs to be adjusted, and helps to accurately process the pipe part having the defect.

[0058] In step S40, whether the first distance reaches a first cutting length and whether the second distance is 0 are judged, so that whether the pipe currently meets the condition of the first cutting length is determined, which provides a clear basis for the decision of the subsequent cutting operation, and ensures the accuracy of the cutting operation.

[0059] Step S50 includes steps S51 and S52.

[0060] In step S51, based on the first distance reaching the first cutting length and the second distance being 0, the cutting assembly 60 is controlled to cut the pipe to form a first finished pipe, so that the first finished pipe formed meets the preset length and is qualified, and the first distance is cleared to be re-accumulated, so as to facilitate the new round of monitoring and cutting of the subsequent pipe part, and the standardized and continuous production of the qualified pipe is realized.

[0061] When the execution condition of step S51 is not met, step S52 is executed. Step S52 includes steps S521-S523.

[0062] In step S521, it is judged whether the first distance meets a first preset condition based on that the first distance is less than the first cutting length and the second distance is greater than 0. The first preset condition includes m

[0063] In step S522, the second cutting length is confirmed to meet L0+L1-2X2

[0064] In step S523, the cutting assembly 60 is controlled to cut the pipe to form a second finished pipe based on that the first distance reaches the second cutting length, and the first distance is cleared to be accumulated again. Thus, more waste pipe can be converted into qualified products, and the continuity of the subsequent pipe processing is ensured by clearing and accumulating the first distance again, so as to reduce the waste of pipe cutting. Figure 3 For example, as shown in FIG. 6, when the pipe is detected to have a defect by the flaw detection assembly 50, it is immediately determined that L2>0, that is, step S521 is executed. The pipe defect length in L0 depends on the accuracy of the equipment. In an ideal state, the pipe defect length in L0 is about equal to 0. When the sum of L0 and L1 is 500, X1 is 300, and the upper limit value of the waste length m is about equal to 200. If the pipe is still processed according to the standard of the first finished pipe, the waste length of the pipe will be 200. Therefore, the pipe is cut in a new way, that is, a second finished pipe is made. The standard length of the second finished pipe is 230. The length of the pipe detected to have no defect is sufficient to make two second finished pipes, and the waste length of the pipe is only 40. Thus, more waste pipe can be converted into qualified products, and the waste of pipe cutting is reduced.

[0065] Further, if L0+L1-X1m, then the cutting condition will not be changed, because the remaining length between the undamaged pipe and the damaged pipe is short, so the first finished pipe is cut, and then the remaining excess material is cut together with the waste material.

[0066] In some embodiments, the pipe cutting control method further comprises steps S53 and S54. The pipe cutting control method sequentially executes steps S10, S20, S30, S40, S51, S53, S54, and S52. Steps S53 and S54 will be described in detail below.

[0067] Step S53: Based on the completion of the cutting of the first finished pipe, the first actual yield of the first finished pipe is accumulated, and the production progress is grasped in real time, which facilitates comparison with the first target yield.

[0068] Step S54: Based on the first actual yield being less than the first target yield, the steps of judging whether the first distance reaches the first cutting length and judging whether the second distance is 0 are returned to execute. In this way, when the actual yield does not reach the target, the cutting condition is continuously judged to ensure continuous production to meet the target yield requirement.

[0069] Further, the pipe cutting control method further comprises steps S55 and S56. The pipe cutting control method sequentially executes steps S10, S20, S30, S40, S51, S53, S54, S52, S55, and S56. Steps S55 and S56 will be described in detail below.

[0070] Step S55: Based on the completion of the cutting of the second finished pipe and the first distance reaching the waste material length, the cutting assembly 60 is controlled to cut the pipe to form a substandard waste pipe, so as to avoid the influence of the waste pipe on subsequent production. The first distance and the second distance are cleared to be re-accumulated. N=L1+L0-2X2+L2; N is the waste material length; L1 is the first distance; L2 is the second distance; L0 is the arrangement distance between the flaw detection assembly 50 and the cutting assembly 60; and X2 is the second cutting length. In some embodiments, the first distance can be conveyed by a certain distance, so that the waste pipe has a certain redundancy when cutting, thereby avoiding cutting at the junction between the waste pipe and the qualified pipe, which causes a small part of the waste pipe to remain on the pipe. It should be understood that the defect length L2 is usually a small value, that is, during the cutting of two sections X2, L2 has ended the accumulation and is a fixed value, so that after cutting two sections X2, the length of the waste material can be clearly obtained.

[0071] Step S56, based on the waste pipe cutting is completed, return to execute the step of judging whether the first distance reaches the first cutting length, judging whether the second distance is 0, guarantee the production process continues. When the second finished pipe cutting is completed and the first distance reaches the waste length, the waste pipe is cut, the unqualified part can be separated from the qualified part, and the influence of the waste on the subsequent production is avoided; the distance is cleared and then the cutting condition is judged to continue, which can make the production process continue and guarantee the continuity of production.

[0072] Further, the pipe cutting control method further comprises steps S60 and S70. The pipe cutting control method sequentially executes steps S10, S20, S30, S40, S51, S53, S54, S52, S60, and S70. Steps S60 and S70 can be described in detail below.

[0073] Step S60, based on the first actual yield reaching the first target yield, judging whether the first distance reaches the third cutting length, judging whether the second distance is 0; the third cutting length is less than the first cutting length; the second cutting length can be the same as or different from the third cutting length. According to the requirement of processing different specifications of pipes, the market environment is better adapted.

[0074] Step S70 comprises step S71. Step S71, based on the first distance reaching the third cutting length and the second distance being 0, controlling the cutting assembly 60 to cut the pipe to form a third finished pipe, and clearing the first distance to accumulate again. When the first actual yield meets the standard, the third cutting length is used for judgment and cutting, which can adapt to different production needs and produce finished pipes of different lengths; ensuring that the third finished pipe is cut under the condition that the second distance is 0, i.e. no defects, which can guarantee the quality of the third finished pipe. At the same time, producing longer first finished pipes has certain anti-risk ability when the market is sold, and when the longer first finished pipes are unsold, the first finished pipes can be reprocessed into the specifications of the third finished pipes, and adaptive adjustment is made according to market conditions.

[0075] Further, the step S70 of the pipe cutting control method further comprises steps S72 and S73. The pipe cutting control method sequentially executes steps S10, S20, S30, S40, S51, S53, S54, S52, S60, S71, S72, and S73. Steps S72 and S73 can be described in detail below.

[0076] Step S72, based on the third finished pipe cutting being completed, accumulating the second actual yield of the third finished pipe, and grasping the production progress in real time, which is convenient for comparison with the second target yield.

[0077] Step S73, based on the second actual yield being less than the second target yield, returning to execute the step of judging whether the first distance reaches the third cutting length and judging whether the second distance is 0 based on the first actual yield reaching the first target yield. Accumulating the actual yield of the third finished pipe can grasp the production situation of this type of finished product; when the second actual yield does not reach the target, returning to continue to judge the cutting condition can ensure that the production meets the target yield demand of this type of finished product.

[0078] Further, before the step of judging whether the first distance reaches the third cutting length and judging whether the second distance is 0 based on the first actual yield reaching the first target yield, the pipe cutting control method further comprises step S80, the pipe cutting control method sequentially executes step S10, step S20, step S30, step S40, step S51, step S53, step S54, step S52, step S60, step S80, step S71, step S72, step S73.

[0079] Step S80, based on the first actual yield reaching the first target yield, adjusting the arrangement distance between the flaw detection assembly 50 and the cutting assembly 60 to meet 2X3≤L0<3X3; X3 is the third cutting length. Since the third cutting length is a shorter specification, L0 is adjusted to meet 2X3≤L0<3X3. In this way, when a defective pipe is detected, it can be ensured that the undamaged pipe has sufficient length, so that a more optimal cutting strategy can be selected during the machining process to maximize the saving of waste. That is, at least two third finished pipes can be machined in L0, thereby facilitating the subsequent cutting and adjustment of the fourth finished pipe. Further, adjusting the distance between the flaw detection assembly 50 and the cutting assembly 60 according to the first actual yield meeting the standard can adapt to the production requirements of the third cutting length, provide a suitable distance basis for subsequent cutting of the third finished pipe, and improve the accuracy of cutting.

[0080] Further, the pipe cutting control method further comprises steps S74, S75, S76, and the pipe cutting control method sequentially executes steps S10, S20, S30, S40, S51, S53, S54, S52, S60, S80, S71, S72, S73, S74, S75, S76.

[0081] Step S74, based on the first distance being less than the third cutting length and the second distance being greater than 0, judging whether the first distance meets a second preset condition; wherein the second preset condition includes m < L0+L1-2X3 < X3, if the cutting is continued according to the specification of the third finished pipe, it will result in the excess length being greater than m, which does not meet the requirement of saving the excess, so the specification of the cutting is adjusted. By judging whether the second preset condition is met, it is determined whether the condition of adjusting the cutting specification scheme is met, thereby reducing the waste of the excess. The third cutting length can be greater than or equal to the second cutting length, or can be less than the second cutting length.

[0082] Step S75, based on the first distance meeting the second preset condition, confirming a fourth cutting length to meet L0+L1-X4 < m, thereby reducing the effective control of the excess. Wherein X4 > 2X3; X4 > X1; X4 is the fourth cutting length;

[0083] Step S76, based on the first distance reaching the fourth cutting length, controlling the cutting assembly 60 to cut the pipe, form a fourth finished pipe, and clear the first distance to accumulate again. Thus, more excess that may have been generated is converted into qualified finished products, and clearing the first distance to accumulate again ensures the continuity of the subsequent processing of the pipe parts, ultimately achieving the effect of reducing the waste of pipe cutting excess.

[0084] X4, X1, X3 lengths decrease in turn, usually the demand for the number of short pipes is greater, so X1 with a longer length is preferentially selected for primary production among X1 and X3, so that when the production capacity demand changes, the produced X1 can be reprocessed into shorter pipe X3, improving the risk resistance ability of production capacity demand changes. The demand for the longest X4 is usually less, in order to strive for a larger number of X1 and X3 to be completed as scheduled, X1 and X3 are preferentially produced, and X1 is used to make up for the problem of longer excess in the production of X3, thereby achieving the problem of reasonable planning of production capacity allocation.

[0085] Further, the step S70 of the pipe cutting control method further comprises steps S77 and S78, and the pipe cutting control method sequentially executes steps S10, S20, S30, S40, S51, S53, S54, S52, S60, S80, S71, S72, S73, S74, S75, S76, S77, S78, and the steps S77 and S78 will be described in detail below:

[0086] Step S77, based on the fourth finished pipe cutting is completed, and the first distance reaches the waste length, the control cutting assembly 60 cuts the pipe, forms the unqualified waste pipe, avoids the waste pipe affecting the subsequent production. And the first distance and the second distance are cleared to accumulate again; N=L1+L0-X4+L2; N is the waste length; L1 is the first distance; L2 is the second distance; L0 is the arrangement distance between the flaw detection assembly 50 and the cutting assembly 60; X2 is the second cutting length.

[0087] Step S78, based on the waste pipe cutting is completed, returns to execute the step of judging whether the first distance reaches the third cutting length and whether the second distance is 0 based on the first actual output reaching the first target output, guarantees the continuous production process. When the fourth finished pipe cutting is completed and the first distance reaches the waste length, the waste pipe is cut, the unqualified part and the qualified part can be separated, and the waste material affecting the subsequent production is avoided; the distance is cleared and returned to continue to judge the cutting condition, which can make the production process continue and ensure the continuity of production. Embodiment two

[0088] In this embodiment, a pipe production device is provided for the pipe cutting control method of any one of embodiment one. As shown in the figure, the pipe production device includes a unwinding assembly 10, a coiling assembly 20, a welding assembly 30, a shaping assembly 40, a flaw detection assembly 50 and a cutting assembly 60. Figure 2

[0089] The continuous supply of pipe raw materials can be realized by the unwinding assembly 10, which guarantees the sufficient raw materials for production. Then the coiling assembly 20 winds the plate material led out of the unwinding assembly 10 into a tubular first semi-finished product, thereby providing a basic shape for subsequent welding. The welding assembly 30 welds the splicing part of the first semi-finished product to form a second semi-finished product, so that the pipe is initially formed. Then the shaping assembly 40 shapes the second semi-finished product after welding to improve the regularity of the pipe. The flaw detection assembly 50 detects the weld defect of the pipe led out of the shaping assembly 40 to ensure that the quality of the pipe entering the cutting link is controllable. The cutting assembly 60 cuts the pipe after weld defect detection to form a first finished pipe. Through the mutual cooperation of the above-mentioned components, a complete production process is realized.

[0090] Further, the distance between the flaw detection assembly 50 and the cutting assembly 60 is adjustable, which can adapt to the needs of different cutting lengths and production processes, improve the flexibility and applicability of the device, and ensure accurate detection and cutting operation under different production conditions.

[0091] Those skilled in the art can understand that the above-mentioned embodiments are specific cases for implementing the present disclosure, and in actual application, various changes can be made in form and details without departing from the scope of the present disclosure.​

Claims

1. A method for controlling pipe fitting cutting, characterized in that, The pipe fitting cutting control method includes: The pipe fitting is conveyed along a first direction so that it passes sequentially through a flaw detection assembly and a cutting assembly. Based on the fact that the pipe is in a conveying state, the flaw detection component is controlled to continuously detect the weld defects of the pipe and accumulate the first distance of the pipe being conveyed; Based on the defect detection of the pipe fitting being unqualified, the second distance of the pipe fitting being transported is accumulated; Determine whether the first distance reaches the first cutting length, and determine whether the second distance is 0; Based on the first distance reaching the first cutting length and the second distance being 0, the cutting component is controlled to cut the pipe to form a first finished pipe, and the first distance is cleared to zero to be accumulated again; Based on the fact that the first distance is less than the first cutting length and the second distance is greater than 0, it is determined whether the first distance satisfies the first preset condition; wherein, the first preset condition includes m < L0 + L1 - X1 < X1; X1 ≤ L0 < 2X1; m is the upper limit of the remaining material length; L0 is the arrangement spacing between the flaw detection component and the cutting component; L1 is the first distance; X1 is the first cutting length; the first distance L1 refers to the distance of the pipe along the first direction through the cutting component; L2 is the second distance; L2 is the defect length; Based on the first distance satisfying the first preset condition, the second cutting length is determined to satisfy L0+L1-2X2<m; X2 is the second cutting length. Based on the first distance reaching the second cutting length, the cutting component is controlled to cut the pipe to form a second finished pipe, and the first distance is reset to zero to be accumulated again.

2. The pipe fitting cutting control method according to claim 1, characterized in that, The pipe fitting cutting control method also includes: Based on the completion of the cutting of the first finished tube, the first actual output of the first finished tube is accumulated; If the first actual output is less than the first target output, return to the steps of determining whether the first distance has reached the first cutting length and determining whether the second distance is 0.

3. The pipe fitting cutting control method according to claim 2, characterized in that, The pipe fitting cutting control method also includes: Based on the completion of the cutting of the second finished pipe and the first distance reaching the waste length, the cutting component is controlled to cut the pipe to form a waste pipe, and the first distance and the second distance are reset to zero for re-accumulation; N is the waste length, N=L1+L0-2X2+L2; Once the waste pipe cutting is complete, return to the steps of determining whether the first distance has reached the first cutting length and whether the second distance is 0.

4. The pipe fitting cutting control method according to claim 2, characterized in that, The pipe fitting cutting control method also includes: Based on the first actual output reaching the first target output, it is determined whether the first distance has reached the third cutting length, and whether the second distance is 0; the third cutting length is less than the first cutting length. Based on the first distance reaching the third cutting length and the second distance being 0, the cutting component is controlled to cut the pipe to form a third finished pipe, and the first distance is cleared to zero to be accumulated again.

5. The pipe fitting cutting control method according to claim 4, characterized in that, The pipe fitting cutting control method also includes: Based on the completion of the cutting of the third finished tube, the second actual output of the third finished tube is accumulated; If the second actual output is less than the second target output, return to the steps of determining whether the first distance has reached the third cutting length and whether the second distance is 0, based on the first actual output reaching the first target output.

6. The pipe fitting cutting control method according to claim 5, characterized in that, Before the steps of determining whether the first distance has reached the third cutting length and whether the second distance is 0 based on the first actual output reaching the first target output, the pipe fitting cutting control method further includes: Based on the first actual output reaching the first target output, the arrangement spacing between the flaw detection component and the cutting component is adjusted to satisfy 2X3≤L0<3X3; X3 is the third cutting length.

7. The pipe fitting cutting control method according to claim 6, characterized in that, The pipe fitting cutting control method also includes: Based on the fact that the first distance is less than the third cutting length and the second distance is greater than 0, it is determined whether the first distance satisfies the second preset condition; wherein, the second preset condition includes m < L0 + L1 - 2X3 < X3; Based on the first distance satisfying the second preset condition, the fourth cutting length is determined to satisfy L0+L1-X4<m; where X4>2X3; X4>X1; X4 is the fourth cutting length; Based on the first distance reaching the fourth cutting length, the cutting component is controlled to cut the pipe to form the fourth finished pipe, and the first distance is reset to zero to be accumulated again.

8. The pipe fitting cutting control method according to claim 7, characterized in that, The pipe fitting cutting control method also includes: Based on the completion of the cutting of the fourth finished pipe and the first distance reaching the waste length, the cutting component is controlled to cut the pipe to form a waste pipe, and the first distance and the second distance are reset to zero for re-accumulation; N is the waste length, N=L1+L0-X4+L2; Once the waste pipe cutting is completed, return to the steps of determining whether the first distance has reached the third cutting length and whether the second distance is 0, based on the first actual output reaching the first target output.

9. A pipe fitting production apparatus, applied to the pipe fitting cutting control method according to any one of claims 1-8, characterized in that, The pipe fitting production apparatus includes: The unwinding assembly unwinds the raw material of the pipe fitting; A rolling assembly that winds a sheet material drawn out from the unwinding assembly into a tubular first semi-finished product; A welding assembly, wherein the welding assembly welds the joints of the first semi-finished product to form a second semi-finished product; A shaping component, wherein the shaping component shapes the second semi-finished product into a tubular component; A flaw detection assembly for detecting weld defects in the pipe fittings extending from the shaping assembly; A cutting assembly for cutting the pipe fitting that has undergone weld defect detection.

10. A pipe fitting production apparatus according to claim 9, characterized in that, The distance between the flaw detection component and the cutting component is adjustable.

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