Cast pipe production system and cast pipe information tracking method

Abstract

A cast pipe production system and cast pipe information tracking method, belonging to the field of casting technology, is used to solve the problem of requiring a marking machine for each pipe pulling machine during cast pipe production. The system comprises at least one pouring machine, a number of pipe pulling machines corresponding to the number of pouring machines, a circular roller line corresponding to the pipe pulling machine for receiving the cast pipes, and a marking machine located on the other side of the circular roller line. The circular roller line is provided with a reference point for confirming the number of rotations of the circular roller line relative to the pipe pulling machine; the circular roller line is provided with an encoder for recording the position of the cast pipe that lands on the circular roller line. The pouring machine, pipe pulling machine, circular roller line, and marking machine are interconnected via a control unit to enable the collection of on-site information and the transmission and execution of action commands between each other. This system solves the problem of using a single marking machine to track and identify cast pipe production information when multiple pipe pulling machines are operating simultaneously.

Description

Technical Field

[0001] The present invention relates to the field of casting technology, in particular to a method for tracking information in a casting production process. Background Art

[0002] During the cast pipe production process, centrifugal pipe pulling and dropping is a process that uses a slightly sloped and pull-out method, relying on initial kinetic energy and gravity acceleration. However, for applications where higher quality cast pipes are required, a chain roller conveyor is often used for smooth delivery.

[0003] When the chain roller conveyor is used for smooth conveying, each pipe pulling machine pulls the pipe at any time, and the pipe is placed on the chain roller conveyor and moves forward along the chain roller conveyor. When it reaches the subsequent connection point, such as the heat treatment connection point, it enters the subsequent conveying roller conveyor.

[0004] During production and post-production traceability, in order to track the process parameters of each cast pipe in each process flow, the information collected by the equipment must be linked to the cast pipe information. However, the post-processing process of cast pipe production involves heat treatment, zinc spraying, and painting, among other covering processes. Conventional methods only recognize the cast characters on the inner wall of the socket, which is costly and not conducive to widespread implementation.

[0005] To facilitate cast pipe traceability, the most advanced approach is to use a heat-resistant coating to print characters on the outside of the pipe immediately after it is pulled and dropped. During subsequent zinc and paint spraying, the characters are then printed with a standard coating, supplemented by image recognition for traceability and recording of process data. However, this approach requires a heat-resistant coating marking machine for each pipe pulling machine, which is expensive. Furthermore, to maintain production efficiency, the number of pipe pulling machines cannot be reduced. This necessitates a new approach to address this dilemma. Summary of the Invention

[0006] In view of the contradiction between the requirements for quality recording and traceability of the cast pipe production process and production efficiency and cost, it is necessary to propose a cast pipe production system and a cast pipe information tracking method, which achieves the purpose of recording and spraying cast pipes by using a high-temperature resistant paint spraying machine in conjunction with several pipe drawing machines.

[0007] A cast pipe production system includes at least one pouring machine, a pipe pulling machine corresponding to the number of pouring machines, an annular roller line corresponding to the pipe pulling machine for receiving the cast pipe, and a marking machine arranged on the other side of the annular roller line, wherein the annular roller line is provided with a reference point for confirming the number of revolutions of the annular roller line relative to the pipe pulling machine; the pouring machine is used to produce the cast pipe, the pipe pulling machine is used to remove the cast pipe from the pouring machine and transfer it to the annular roller line, the annular roller line is provided with an encoder for recording dynamic position data of the cast pipe falling on the annular roller line; the pouring machine, the pipe pulling machine, the annular roller line and the marking machine are interconnected by a control unit to realize the collection of on-site information and the transmission and execution of action instructions between each other.

[0008] Through the above technical solution, it is possible to use one marking machine to mark the castings pulled out by multiple pipe drawing machines.

[0009] Furthermore, a position sensing device is provided on the side of the pipe pulling machine close to the annular roller line to determine the position of each pipe pulling machine relative to the annular roller line, and also to record the position of the cast pipe pulled by the pipe pulling machine onto the annular roller line.

[0010] Furthermore, a position sensing device is provided at a reference point of the annular roller line to determine the position of each of the pipe pulling machines relative to the annular roller line.

[0011] A method for tracking cast pipe information, comprising:

[0012] 1) Determine the position of each pipe pulling machine relative to the annular roller line and the position of the cast pipe pulled onto the annular roller line;

[0013] 2) Based on the position information of the cast pipe pulled onto the annular roller conveyor, the control unit transmits the information of the corresponding cast pipe to the marking machine;

[0014] 3) The number spraying machine sprays the corresponding cast pipe information on the corresponding cast pipe to achieve accurate marking of the cast pipe.

[0015] The beneficial effects of the technical solution of the present invention are as follows: through the above cast pipe production system and cast pipe information tracking method, it is achieved that one marking machine is used to complete the tracking and identification of cast pipe production information when several pipe drawing machines are operating simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of an embodiment of the present invention;

[0017] Among them, 1-annular roller line; 2-reference point; 3-front and subsequent junction; 4-subsequent roller line. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the technical solution of the present invention, the technical solution of the invention content is described in detail with reference to the accompanying drawings. Obviously, the following descriptions are some typical embodiments of the present invention. For ordinary technicians in this field, other solutions can be obtained based on these embodiments without paying any creative work.

[0019] like Figure 1 The figure shows the pipe casting and pipe drawing process (the marking machine in the dotted box is eliminated due to the implementation of this technical solution). This embodiment uses four centrifugal casting machines, four pipe drawing machines, one high-temperature resistant coating marking machine and a chain roller line as examples to explain the technical solution of the present invention in detail.

[0020] A kind of Figure 1 The cast pipe production system shown includes four centrifugal casting machines, four pipe drawing machines corresponding to the centrifugal casting machines, a chain-type circular roller conveyor 1, and a high-temperature resistant paint marking machine located on the other side of the chain-type circular roller conveyor relative to the pipe drawing machines, near the subsequent roller conveyor 4. The chain-type circular roller conveyor 1 is also equipped with a reference point 2. When any marked roller of the chain-type circular roller conveyor 1 rotates to the reference point 2, the chain-type circular roller conveyor 1 is considered to have rotated one circle, and the position information is updated. The chain-type circular roller conveyor 1 is equipped with an encoder to record the dynamic position data of each cast pipe that falls onto the circular roller conveyor.

[0021] In this embodiment, the first extubation machine is used as the starting position, the distance between the second extubation machine and the first extubation machine is recorded as D1, the distance between the third extubation machine and the first extubation machine is recorded as D2, and the distance between the fourth extubation machine and the first extubation machine is recorded as D3.

[0022] As a supplement to this embodiment, in order to accurately record the above position information, a first position sensing device is provided at the end of each pipe pulling machine opposite to the chain-type circular roller line 1. When the chain-type circular roller line 1 passes through each first position sensing device, the first position sensing device will feed back the current position recorded to the control unit as the current position information of the dropped pipe. The relative position of the cast pipe dropped onto the chain-type circular roller line 1 is determined by the position recorded by the first position sensing device, and the absolute position of the cast pipe dropped onto the chain-type circular roller line 1 needs to be added to the position recorded by the encoder on the chain-type circular roller line 1 based on its relative position. Specifically, the encoder is provided on the output shaft of the motor driving the chain-type circular roller line, and the dynamic position of the cast pipe dropped onto the chain-type circular roller line 1 is calculated by recording the number of rotations of the motor.

[0023] As another supplement to this embodiment, a second position sensing device is provided at the reference point 2 of the annular roller line, which has a similar function to the first position sensing device provided on the pipe pulling machine. The second position sensing device is also used to detect and record the position information of each pipe pulling machine and the position information of the cast pipe falling on the annular roller line.

[0024] According to the above cast pipe production system, the cast pipe information tracking method is:

[0025] 1) When the original position of the cast pipe on the annular roller conveyor is the same as the position of each of the pipe pulling machines on the annular roller conveyor, the positions of the four pipe pulling machines are recorded in the control unit according to the feedback information of the first position sensing device, as 0, D1, D2 and D3 respectively;

[0026] 2) The control unit sends the serial number information of the first cast pipe falling into the chain-type circular roller line to the number spraying machine;

[0027] 3) When the first cast pipe follows the chain-type circular roller line and moves to the operating range of the number spraying machine, the number spraying machine sprays the number information of the first cast pipe on the end of the first cast pipe, thereby marking and tracking the cast pipe;

[0028] 4) When a second cast pipe falls onto the chain-type circular roller conveyor, the control unit sprays the second cast pipe that enters the operating range of the spraying machine based on the received position information and numbering information of the second cast pipe, and completes the spraying of the cast pipes that fall onto the chain-type circular roller conveyor in sequence.

[0029] As a supplement to this embodiment, the cast pipe information tracking method further includes:

[0030] The reference point 2 serves as a counting or clearing node for the chain-type circular roller line. When a cast pipe is being transported on the chain-type circular roller line, the reference point 2 increases the position value of the chain-type circular roller line by one circle as a whole when passing through the zero position of the No. 1 pipe pulling machine, that is, the length value of the chain-type circular roller line is added to the original position value; when no cast pipe is being transported on the chain-type circular roller line, the reference point 2 clears the increments of the position values ​​on the chain-type circular roller line when passing through the zero position of the No. 1 pipe pulling machine, that is, the number of circles of the chain-type circular roller line is cleared.

[0031] More preferably, the line length L of one circle of the chain-type circular roller conveyor is measured by an encoder arranged on the chain-type circular roller conveyor.

[0032] For example, when the chain-type circular roller line is at the zeroth circle and there is a casting pipe on it,

[0033] The dynamic position of the cast pipe pulled out by the No. 1 pipe pulling machine onto the chain-type ring roller line is the zero position;

[0034] The dynamic position of the cast pipe pulled out by the No. 2 pipe pulling machine onto the chain-type ring roller line is position D1;

[0035] The dynamic position of the cast pipe pulled out by the No. 3 pipe pulling machine onto the chain-type ring roller line is the D2 position;

[0036] The dynamic position of the cast pipe pulled out by the No. 4 pipe pulling machine onto the chain-type annular roller line is the D3 position.

[0037] For another example, when the chain-type ring roller line is in the second circle and there is a casting pipe on it,

[0038] The dynamic position of the cast pipe pulled out by the No. 1 pipe pulling machine onto the chain-type ring roller line is the 2L position;

[0039] The dynamic position of the cast pipe pulled out by the No. 2 pipe pulling machine onto the chain-type ring roller line is the 2L+D1 position;

[0040] The dynamic position of the cast pipe pulled out by the No. 3 pipe pulling machine onto the chain-type ring roller line is the 2L+D2 position;

[0041] The dynamic position of the cast pipe pulled out by the No. 4 pipe pulling machine onto the chain-type annular roller line is the 2L+D3 position.

[0042] For another example, when it is detected that there is no cast pipe on the chain-type circular roller line, when the reference point 2 of the rotation of the chain-type circular roller line passes through the zero position of the No. 1 pipe pulling machine, the previously incremented number of circles of the chain-type circular roller line is reset to zero, and the dynamic position of the chain-type circular roller line is restored to the position at the zeroth circle.

[0043] Specifically, the dynamic position of the casting pipe on the chain-type circular roller line is the sum of the position of the casting pipe when it is pulled onto the chain-type circular roller line and the linear distance of the chain-type circular roller line moving forward in real time.

[0044] As a supplement to this embodiment, the cast pipe information tracking method further includes:

[0045] When the cast pipe enters the operating range of the marking machine, the position of the spray nozzle of the marking machine is adjusted according to the position of the cast pipe on the chain-type circular roller line so that the mark sprayed on the cast pipe is sprayed at a fixed position.

[0046] As another supplement to this embodiment, the cast pipe information tracking method further includes:

[0047] 1) When the current dynamic position of the cast pipe is greater than or equal to the dynamic position of the previous and subsequent junctions, the control unit transmits the numbering information of the next cast pipe to the number spraying machine;

[0048] 2) The previously numbered cast pipe is handed over to the subsequent roller conveyor line, and the measured value of the number of cast pipes on the chain-type circular roller conveyor line is reduced by 1;

[0049] 3) Clearing the recorded information of the position of the casting pipe which is transmitted to the subsequent roller line recorded in the control unit.

[0050] Through the implementation of the above technical solutions, the problem of cast pipe identification and quality tracking in a cast pipe production line with a single numbering machine applicable to several pipe pulling machines has been solved. Not only the construction cost of the cast pipe production system is reduced, but also the manufacturing cost of cast pipe production is reduced; by providing a first position sensing device on each pipe pulling machine, the position of the cast pipe pulled from each pipe pulling machine onto the chain-type circular roller conveyor can be conveniently located. When the position of each cast pipe dropped onto the chain-type circular roller conveyor can be determined, the possibility of a single numbering machine for numbering is realized. The real-time position update of the chain-type circular roller conveyor realizes the sorting of cast pipes on the chain-type circular roller conveyor, facilitates the orderly spraying of cast pipe numbering information, and satisfies the tracking and monitoring of cast pipe information in subsequent processes.

[0051] The above embodiment is only a description of a typical application of the technical solution of the present invention, and reasonable expansion can be made on a reasonable basis without requiring creative work.

Claims

1. A cast pipe production system, characterized in that: The invention comprises at least one casting machine, a number of pipe pulling machines corresponding to the number of casting machines, annular roller conveyors corresponding to the number of pipe pulling machines for receiving cast pipes, and a marking machine arranged on the other side of the annular roller conveyor; the annular roller conveyor is provided with a reference point for determining the number of revolutions of the annular roller conveyor relative to the pipe pulling machine; the casting machine is used to produce cast pipes; the pipe pulling machine is used to remove cast pipes from the casting machine and transfer them to the annular roller conveyor; the pipe pulling machine is further provided with a first position sensing device on the side of the annular roller conveyor close to the annular roller conveyor for determining the position of each pipe pulling machine relative to the annular roller conveyor; the annular roller conveyor is provided with an encoder, which is arranged on the output shaft of the motor driving the annular roller conveyor and calculates the dynamic position of the cast pipe falling on the annular roller conveyor by recording the number of revolutions of the motor; the casting machine, pipe pulling machine, annular roller conveyor and marking machine are interconnected by a control unit to realize the collection of on-site information and the transmission and execution of action instructions between each other.

2. The cast pipe production system according to claim 1, characterized in that: A second position sensing device is also provided at the reference point of the annular roller line to determine the position of each of the pipe pulling machines relative to the annular roller line.

3. A cast pipe information tracking method for a cast pipe production system according to claim 2, characterized in that: Including, determining the position of each pipe pulling machine relative to the annular roller line and the position of the cast pipe pulled onto the annular roller line; According to the position information of the cast pipe pulled onto the annular roller line, the control unit transmits the information of the corresponding cast pipe to the marking machine; The number spraying machine sprays corresponding cast pipe information on the corresponding cast pipe, thereby achieving accurate marking of the cast pipe.

4. The method for tracking cast pipe information according to claim 3, wherein: The detailed steps include: when the original position of the cast pipe on the annular roller line and the position of each of the pipe pulling machines on the annular roller line are the same, recording the positions of the four pipe pulling machines in the control unit based on information fed back by the first position sensing device; The control unit sends the numbering information of the first cast pipe falling into the annular roller line to the number spraying machine; When the first cast pipe follows the annular roller line and moves to the operating range of the number spraying machine, the number spraying machine sprays the number information of the first cast pipe on the end of the first cast pipe, thereby marking and tracking the cast pipe; When a second cast pipe falls onto the annular roller conveyor, the control unit sprays the second cast pipe entering the operating range of the marking machine based on the received position information and numbering information of the second cast pipe, and completes the marking of the cast pipes falling onto the annular roller conveyor in sequence.

5. The method for tracking cast pipe information according to claim 4, characterized in that: The reference point serves as a counting or zeroing node for the circular roller line. When a cast pipe is being transported on the circular roller line, the reference point increases the position value of the circular roller line by one circle as a whole when it passes through the zero position of the No. 1 pipe pulling machine. When no cast pipe is being transported on the circular roller line, the reference point clears the increments of the position values ​​on the circular roller line when it passes through the zero position of the No. 1 pipe pulling machine.

6. The method for tracking cast pipe information according to claim 5, characterized in that: The dynamic position of the casting pipe on the annular roller line is the sum of the position of the casting pipe when it is pulled onto the annular roller line and the linear distance of the annular roller line moving forward in real time.

7. The method for tracking cast pipe information according to claim 6, wherein: When the cast pipe enters the operating range of the marking machine, the position of the spray nozzle of the marking machine is adjusted according to the position of the cast pipe on the annular roller line so that the mark sprayed on the cast pipe is sprayed at a fixed position.

8. The method for tracking cast pipe information according to claim 7, characterized in that: The control unit transmits the numbering information of the next cast pipe to the number spraying machine when the current dynamic position of the cast pipe is greater than or equal to the dynamic position of the junction of the previous and subsequent cast pipes; The previously numbered cast pipe is handed over to the subsequent roller line, and the measured value of the number of cast pipes on the circular roller line is reduced by 1; The recorded information of the position of the casting pipe which is transferred to the subsequent roller conveyor line and recorded in the control unit is cleared.

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