A multi-head sawing device for pipes

Abstract

The present invention discloses a multi-head sawing device for pipes, comprising a horizontal machine base, a guide rail being arranged on the horizontal machine base, the multi-head sawing device further comprising at least two sawing heads connected in series, the base of each sawing head being directly or indirectly slidably mounted on the guide rail, a linkage mechanism being installed between adjacent bases, a sliding drive device for driving the sawing head to slide being installed on the horizontal machine base, the sliding drive device being transmission-connected to the base of one of the sawing heads, an intermediate support guide mechanism for supporting the pipe after being cut being also installed between adjacent bases, and a downstream support guide mechanism for supporting the pipe after being cut being installed on the base of the sawing head at the most downstream of the pipe conveying direction. The multi-head sawing device can cut shorter pipes with high cutting efficiency.

Description

Technical Field

[0001] The invention relates to a multi-head sawing device, which is used for online cutting of pipes. Background Art

[0002] At present, the online cutting of pipes is achieved by using a flying saw. As the name suggests, the flying saw collects pulse signals through electrical measuring elements, drives the saw car along the conveying direction of the pipe with a motor, clamps and cuts the material synchronously when the saw car reaches the required cutting speed, and then returns to its original position to wait for the next cutting.

[0003] However, there is a problem with the current flying saw. The saw car is driven by a motor to accelerate from a standstill to the same speed as the pipe conveying speed, then clamp and cut. After cutting, the clamp of the saw car releases the pipe and then the sawing decelerates to 0. Then the saw car accelerates in the reverse direction and decelerates back to the initial position to facilitate another sawing. In the above action cycle, the saw car is affected by the pipe conveying speed, the acceleration and deceleration of the saw car, resulting in the current flying saw being unable to cut shorter pipes. It takes enough time to return to the initial position after sawing, which limits the pipe conveying speed. Therefore, the current pipe manufacturers need to purchase flying saws for online cutting, and then put the cut pipes into ordinary sawing machines for secondary cutting. This requires the purchase of multiple sawing machines, resulting in increased costs and low sawing efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a multi-head sawing device for pipes, which can cut shorter pipes with high cutting efficiency.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a multi-head sawing device for pipes, including a horizontal machine base, on which a guide rail is arranged, the multi-head sawing device also includes at least two sawing heads connected in series, the base of each sawing head is directly or indirectly slidably installed on the guide rail, a linkage mechanism is installed between adjacent bases, a sliding drive device for driving the sawing head to slide is installed on the horizontal machine base, the sliding drive device is transmission-connected to the base of one of the sawing heads, an intermediate support and guide mechanism for supporting the cut pipe is also installed between adjacent bases, and a downstream support and guide mechanism for supporting the cut pipe is installed on the base of the sawing head at the most downstream of the pipe conveying direction.

[0006] As a pre-selected solution, a spacing adjustment device for adjusting the spacing between adjacent bases is installed between adjacent bases.

[0007] As a preselected scheme, the spacing adjustment device includes a linkage screw, one end of which is rotatably mounted on one of the adjacent bases, a spacing adjustment motor for driving the linkage screw to rotate is mounted on the base, a nut is mounted on the other base of the adjacent bases, and the other end of the linkage screw is mounted in the screw hole of the nut to form a screw nut mechanism.

[0008] As a pre-selected solution, the intermediate support and guide mechanism includes several intermediate roller seats, each of which is equipped with an intermediate support roller, and a mounting plate is fixed between adjacent bases. One side of the intermediate roller seat is fixed on the mounting plate, and the other side is slidably mounted on the guide rail.

[0009] As a pre-selected solution, a first vertical strip hole is provided on the middle roller seat, and the middle support roller is constrained in the first vertical strip hole and fixed by a fastener.

[0010] As a pre-selected solution, the downstream support and guide mechanism includes a mounting seat fixed on the base of the most downstream sawing head, the mounting seat is provided with a mounting beam extending along the pipe conveying direction, and a plurality of downstream support rollers are arranged at intervals on the mounting beam.

[0011] As a preselected solution, the mounting seat includes a horizontal mounting seat and a vertical mounting seat. The horizontal mounting seat is provided with a horizontal bar hole perpendicular to the pipe conveying direction, and the horizontal mounting seat is fixed to the base of the most downstream sawing head by bolts constrained in the horizontal bar hole. The vertical mounting seat is provided with a second vertical bar hole, and the vertical mounting seat is fixed to the horizontal mounting seat by bolts installed in the second vertical bar hole.

[0012] As a pre-selected solution, the base of the sawing head located most upstream is provided with an upstream fixed support roller, and the upstream fixed support roller is located at the upstream side of the sawing head.

[0013] As a pre-selected solution, the sliding drive device includes a servo motor fixed to the downstream end of the horizontal machine base, and the servo motor is transmission-connected to the base of the most downstream sawing head through a synchronous belt transmission mechanism.

[0014] As a pre-selected solution, a guide mechanism for facilitating pipe guiding is provided at the upstream end of the horizontal machine base.

[0015] After adopting the above technical scheme, the effect of the present invention is as follows: since the multi-head sawing device for pipes includes a horizontal machine base, a guide rail is arranged on the horizontal machine base, and the multi-head sawing device also includes at least two sawing heads connected in series, the base of each sawing head is directly or indirectly slidably mounted on the guide rail, a linkage mechanism is installed between adjacent bases, a sliding drive device for driving the sawing head to slide is installed on the horizontal machine base, the sliding drive device is transmission-connected with the base of one of the sawing heads, an intermediate support guide mechanism for supporting the cut pipe is also installed between adjacent bases, and a downstream support guide mechanism for supporting the cut pipe is installed on the base of the sawing head located at the most downstream of the pipe conveying direction Therefore, in the actual sawing process, multiple sawing heads are in the initial position, and the sawing heads operate according to the set program. During the continuous conveying of the pipe, when the sawing heads are accelerated from the static state to the same as the pipe conveying, the clamp of each sawing head clamps the pipe and then saws the pipe. At this time, at least two sawing heads connected in series cut several cuts on the pipe, thereby cutting multiple sections of pipe at one time, and the spacing between the saw blades of the sawing heads is the length of the sawed pipe. The sawed pipe is supported by the middle support roller group and the downstream support guide mechanism, and then the clamps of the multiple sawing heads release the pipe and return to reset after deceleration. During this period, the cut pipe is pushed by the upstream pipe and continuously conveyed, and finally the cut pipe is sent out. The multi-head sawing device drives one of the sawing heads through the sliding drive device, and each sawing head acts synchronously through the linkage mechanism, so multiple sections of pipe can be sawed in one sawing cycle. Compared with the existing flying saw, the sawed pipe length is shorter under the same pipe conveying speed.

[0016] Furthermore, since a spacing adjustment device for adjusting the spacing between adjacent bases is installed between adjacent bases, the spacing between the bases can be adjusted by the spacing adjustment device, thereby being suitable for sawing pipes of different lengths.

[0017] Furthermore, since the spacing adjustment device includes a linkage screw, one end of the linkage screw is rotatably mounted on one of the adjacent bases, a spacing adjustment motor for driving the linkage screw to rotate is mounted on the base, a nut is mounted on the other base of the adjacent bases, and the other end of the linkage screw is mounted in the screw hole of the nut to form a screw-nut mechanism. The linkage screw can be driven to rotate by the spacing adjustment motor, and the forward and reverse rotation of the linkage screw will adjust the distance between the bases of the two sawing heads, thereby finally realizing the electric adjustment of the spacing.

[0018] Furthermore, since the intermediate supporting and guiding mechanism comprises a plurality of intermediate roller seats, each intermediate roller seat is mounted with an intermediate supporting roller, a mounting plate is fixed between adjacent bases, one side of the intermediate roller seat is fixed on the mounting plate, and the other side is slidably mounted on the guide rail, the intermediate roller group of the intermediate supporting roller group is fixed more reasonably, one side is fixed on the mounting plate and will slide with the base, while the other side slides on the guide rail, so it can not only be well supported, but also slide very smoothly.

[0019] Furthermore, since the middle roller seat is provided with a first vertical bar hole, the middle support roller is constrained in the first vertical bar hole and fixed by a fastener. The height of the middle support roller can be adjusted by using the first vertical bar hole, so as to better support the pipe.

[0020] Since the mounting seat includes a horizontal mounting seat and a vertical mounting seat, the horizontal mounting seat is provided with a horizontal bar hole perpendicular to the pipe conveying direction, and the horizontal mounting seat is fixed to the base of the most downstream sawing head by bolts constrained in the horizontal bar hole, and the vertical mounting seat is provided with a second vertical bar hole, and the vertical mounting seat is fixed to the horizontal mounting seat by bolts installed in the second vertical bar hole. The positions of the horizontal mounting seat and the vertical mounting seat can be adjusted through the horizontal bar hole and the second vertical bar hole, thereby adjusting the height and horizontal position of the mounting beam, and finally enabling the downstream support roller to better support the pipe.

[0021] Since the base of the sawing head located at the most upstream is provided with an upstream fixed support roller, the upstream fixed support roller is located on the upstream side of the sawing head. The upstream fixed support roller can be used to conveniently support the end of the entire upstream pipe after cutting is completed, making it convenient for the pipe to enter the clamp of each sawing head better and smoother.

[0022] Furthermore, since a guide mechanism for guiding the pipe is arranged at the upstream end of the horizontal machine base, the guide mechanism can facilitate the pipe to accurately enter the sawing station of the multi-head sawing device, thereby ensuring the accuracy of sawing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 is a stereogram of an embodiment of the present invention;

[0025] Figure 2 is a three-dimensional diagram of another angle of the embodiment of the present invention;

[0026] Figure 3 yes Figure 2 An enlarged schematic diagram at A;

[0027] Figure 4 yes Figure 2 An enlarged schematic diagram at B;

[0028] Figure 5 yes Figure 1 An enlarged schematic diagram at C;

[0029] In the attached drawings: 1. horizontal machine base; 2. guide rail; 3. servo motor; 4. synchronous belt transmission mechanism; 5. downstream sawing head; 6. upstream sawing head; 7. guide mechanism; 71. guide support; 72. first guide roller; 73. second guide roller; 8. intermediate support guide mechanism; 81. mounting plate; 82. intermediate roller seat; 83. intermediate support roller; 84. first vertical bar hole; 9. downstream support guide mechanism; 91. horizontal mounting seat; 92. vertical mounting seat; 93. horizontal bar hole; 94. second vertical bar hole; 95. mounting beam; 96. downstream support roller; 10. linkage mechanism; 101. linkage rod; 102. spacing adjustment motor; 103. locking block; 104. locking rod; 105. nut; 11. upstream fixed support roller; 111. upstream mounting roller seat; 112. upstream support roller. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below through specific examples.

[0031] like Figures 1 to 5 As shown, a multi-head sawing device for pipes includes a horizontal machine base 1, on which a guide rail 2 is arranged. The multi-head sawing device also includes at least two sawing heads connected in series, and the base of each sawing head is directly or indirectly slidably mounted on the guide rail 2, and a linkage mechanism 10 is installed between adjacent bases.

[0032] The base is directly slidably mounted on the guide rail 2 in such a manner that each sawing head is mounted on the guide rail 2 via a slider that cooperates with the guide rail 2, thereby achieving sliding. At this time, the linkage mechanism 10 can be linked by a linkage rod mounted on an adjacent base.

[0033] The specific way in which the base is indirectly slidably installed on the guide rail 2 is as follows: a relatively large sliding base plate is slidably installed on the guide rail 2, and each sawing head is installed on the sliding base plate to realize the overall sliding installation. At the same time, the linkage mechanism 10 is actually the sliding base plate, and the linkage of each sawing head can be realized by using the sliding base plate.

[0034] In this embodiment, the number of sawing heads is two and they are defined as an upstream sawing head 6 and a downstream sawing head 5 according to the advancing direction of the pipe. The upstream sawing head 6 includes an upstream base, a sawing mechanism and a clamp; the downstream sawing head 5 includes a downstream base, a sawing structure and a clamp. Of course, the number of sawing heads is not limited to two, but can also be three or more.

[0035] The horizontal machine base 1 is provided with a sliding drive device, which drives the sawing head to slide, wherein preferably, the sliding drive device is connected to the downstream base in a transmission manner. The sliding drive device comprises a servo motor 3 fixed to the downstream end of the horizontal machine base 1, and the servo motor 3 is connected to the base (downstream base) of the most downstream sawing head through a synchronous belt transmission mechanism 4. The synchronous belt transmission mechanism 4 and the servo motor 3 can be used to control the sliding speed and position of each base very accurately.

[0036] An intermediate support guide mechanism 8 for supporting the cut pipe is installed between adjacent bases, and a downstream support guide mechanism 9 for supporting the cut pipe is installed on the base of the sawing head located at the most downstream in the pipe conveying direction.

[0037] The intermediate support guide mechanism 8 includes a plurality of intermediate roller seats 82, each of which is equipped with an intermediate support roller 83. A mounting plate 81 is fixed between adjacent bases. One side of the intermediate roller seat 82 is fixed on the mounting plate 81, and the other side is slidably mounted on the guide rail 2. The intermediate roller seat 82 is provided with a first vertical bar hole 84, and the intermediate support roller 83 is constrained in the first vertical bar hole 84 and fixed by a fastener. The mounting plate 81 is provided with a longitudinal bar hole parallel to the pipe conveying direction, and each intermediate roller seat 82 is fixed by a bolt constrained in the longitudinal bar hole, so that the arrangement of each intermediate roller seat 82 is conveniently adjusted.

[0038] like Figure 1 and Figure 4 As shown, the downstream support guide mechanism 9 includes a mounting seat fixed on the base of the most downstream sawing head, the mounting seat is provided with a mounting beam 95 extending along the pipe conveying direction, and a plurality of downstream support rollers 96 are arranged at intervals on the mounting beam 95. The mounting seat includes a horizontal mounting seat 91 and a vertical mounting seat 92, the horizontal mounting seat 91 is provided with a horizontal bar hole 93 perpendicular to the pipe conveying direction, the horizontal mounting seat 91 is fixed to the base of the most downstream sawing head by a bolt constrained in the horizontal bar hole 93, the vertical mounting seat 92 is provided with a second vertical bar hole 94, and the vertical mounting seat 92 is fixed to the horizontal mounting seat 91 by a bolt installed in the second vertical bar hole 94.

[0039] Of course, the downstream support guide mechanism and the intermediate support guide mechanism in this embodiment can also adopt other structural forms. In this embodiment, the guidance is achieved by supporting rollers, and a guide sleeve parallel to the pipe can be set between the bases. The diameter of the guide sleeve is larger than the pipe to be sawed. In this way, the pipe will be supported by the guide sleeve after sawing, and during the continuous transportation of the upstream pipe, the cut pipe will be sent out through the guide sleeve.

[0040] like Figure 1 , 2 and Figure 5 As shown, the preferred base of the sawing head in this embodiment is directly slidably mounted on the guide rail 2, so the linkage mechanism 10 includes a linkage rod 101 installed between adjacent bases, and the base is equipped with a spacing adjustment device for adjusting the length of the linkage rod 101. The spacing adjustment device directly adjusts the length of the linkage rod 101 to achieve spacing adjustment between the sawing heads.

[0041] In this embodiment, the linkage rod 101 is a linkage screw, one end of which is rotatably mounted on one of the adjacent bases, a spacing adjustment motor 102 for driving the linkage screw to rotate is mounted on the base, a nut 105 is mounted on the other of the adjacent bases, and the other end of the linkage screw is mounted in the screw hole of the nut 105 to form a screw nut 105 mechanism. Of course, the spacing adjustment device in this embodiment adopts an electric adjustment method, and a manual adjustment method can also be adopted, for example, an operating hand wheel is connected to the linkage screw, and the spacing adjustment is achieved by the hand wheel.

[0042] Of course, the linkage rod may also be a bare rod, and then the length of the linkage rod is driven by a cylinder to adjust the spacing.

[0043] like Figure 5 As shown, a locking block 103 is also installed on the upstream base, and a locking hole is provided on the locking block 103 for the linkage screw to pass through. An opening connected to the locking hole is provided on one side of the locking block 103, and a locking rod 104 is installed at the opening on the locking block 103. In this way, when the linkage screw is adjusted to the right position, the linkage screw is locked by the locking rod 104 to improve the overall reliability.

[0044] like Figure 2 As shown, the base of the sawing head located at the most upstream is provided with an upstream fixed support roller 11, and the upstream fixed support roller 11 is located at the upstream side of the sawing head. The upstream fixed support roller 11 includes an upstream mounting roller seat 111 fixed on the upstream base and an upstream support roller 112 mounted on the upstream mounting roller seat 111, and the upstream support roller 112 is installed in the same manner as the intermediate support roller 83.

[0045] like Figure 3 As shown, a guide mechanism 7 for convenient pipe guiding is provided at the upstream end of the horizontal machine base 1. The guide mechanism 7 is located at the upstream side of the upstream sawing head 6, wherein the guide mechanism 7 comprises a guide support 71 fixed on the horizontal machine base 1, and a pair of first guide rollers 72 and a pair of second guide rollers 73 are rotatably mounted on the guide support 71; the first guide roller 72 and the second guide roller 73 form a guide hole for convenient pipe passing.

[0046] The multi-head pipe sawing device of the present invention can be used to cut pipes of different shapes, for example, it can be used to saw round pipes or square pipes.

[0047] The gas circuit system, the actuators such as the servo motor 3, the gear transmission mechanism, and the lead screw nut 105 mechanism mentioned in this embodiment are all conventional technologies at present. The specific structure and principle and other designs of the cylinder, motor and other transmission mechanisms are disclosed in detail in the "Mechanical Design Manual Fifth Edition" printed in Beijing in April 2008, the fifth edition, and the twenty-eighth time, which belongs to the prior art and its structure is clear. The SMC training textbook "Modern Practical Pneumatic Technology, 3rd Edition" published by the Machinery Industry Press on August 1, 2008 discloses in detail the vacuum components, gas circuits and program control, indicating that the gas circuit structure in this embodiment is also an existing technology, which is clear. The book "Motor Drive and Speed ​​Regulation" published by the Chemical Industry Press on July 1, 2015 also introduces the control of the motor and the travel switch in detail. Therefore, the circuit and gas circuit connections are clear.

[0048] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A multi-head sawing device for pipes, comprising a horizontal machine base, on which a guide rail is arranged, characterized in that: The multi-head sawing device also includes at least two sawing heads connected in series, the base of each sawing head is directly or indirectly slidably mounted on the guide rail, a linkage mechanism is installed between adjacent bases, a sliding drive device for driving the sawing head to slide is installed on the horizontal machine base, an intermediate support guide mechanism for supporting the cut pipe is also installed between adjacent bases, and a downstream support guide mechanism for supporting the cut pipe is installed on the base of the sawing head located at the most downstream of the pipe conveying direction. The intermediate support guide mechanism includes a plurality of intermediate roller seats, each of which is equipped with an intermediate support roller, and a mounting plate is fixed between adjacent bases. One side of the intermediate roller seat is fixed on the mounting plate, and the other side is slidably mounted on the guide rail. The downstream support and guide mechanism comprises a mounting seat fixed on the base of the most downstream sawing head, the mounting seat is provided with a mounting beam extending along the pipe conveying direction, and a plurality of downstream support rollers are arranged at intervals on the mounting beam.

2. A multi-head pipe sawing device as claimed in claim 1, characterized in that: A spacing adjustment device for adjusting the spacing between adjacent bases is installed between adjacent bases.

3. A multi-head pipe sawing device as claimed in claim 2, characterized in that: The spacing adjustment device includes a linkage screw, one end of which is rotatably mounted on one of the adjacent bases, a spacing adjustment motor for driving the linkage screw to rotate is mounted on the base, a nut is mounted on the other base of the adjacent bases, and the other end of the linkage screw is mounted in the screw hole of the nut to form a screw-nut mechanism.

4. A multi-head pipe sawing device as claimed in claim 3, characterized in that: The middle roller seat is provided with a first vertical strip hole, and the middle supporting roller is constrained in the first vertical strip hole and fixed by a fastener.

5. A multi-head pipe sawing device as claimed in claim 4, characterized in that: The mounting seat includes a horizontal mounting seat and a vertical mounting seat. The horizontal mounting seat is provided with a horizontal bar hole perpendicular to the pipe conveying direction. The horizontal mounting seat is fixed to the base of the most downstream sawing head by bolts constrained in the horizontal bar hole. The vertical mounting seat is provided with a second vertical bar hole. The vertical mounting seat is fixed to the horizontal mounting seat by bolts installed in the second vertical bar hole.

6. A multi-head pipe sawing device as claimed in claim 1, characterized in that: The base of the sawing head located most upstream is provided with an upstream fixed support roller, which is located at the upstream side of the sawing head.

7. A multi-head pipe sawing device as claimed in claim 6, characterized in that: The sliding drive device comprises a servo motor fixed to the downstream end of the horizontal machine base, and the servo motor is transmission-connected to the base of the most downstream sawing head through a synchronous belt transmission mechanism.

8. A multi-head pipe sawing device as claimed in claim 7, characterized in that: The upstream end of the horizontal machine base is provided with a guiding mechanism for facilitating the guiding of the pipe.

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