Steel pipe end cutting equipment

Abstract

This application relates to the technical field of pipe production, and in particular to a steel pipe end cutting device, which includes two sawing machines arranged on the ground. A bearing frame is arranged between the two sawing machines. An upper feeding roller path, a lower feeding roller path and a transfer roller path that are parallel to each other are arranged on the bearing frame. The transfer roller path is located between the upper feeding roller path and the lower feeding roller path. First transfer components for transferring steel pipes are arranged between the upper feeding roller path and the transfer roller path, and between the transfer roller path and the lower feeding roller path. The first transfer component includes a driving motor arranged on the bearing frame and electrically connected to the control system, and a driving rod rotatably mounted on the bearing frame and parallel to the transfer roller path. One end of the driving rod is coaxially arranged on the output shaft of the driving motor. A plurality of pipe lifting plate arms are axially arranged on the driving rod, and the end of the pipe lifting plate arm is in a J shape. This application has the advantages of saving manpower and improving production efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of pipe production, and particularly to a steel pipe end cutting device. Background Art

[0002] A steel pipe is a kind of steel with a hollow cross-section and a length much greater than its diameter or circumference, mainly used for fluid transportation, structural support, mechanical manufacturing, etc.

[0003] After the steel pipe is formed, in order to be adapted for application on the production line, it is necessary to cut both ends of the steel pipe. The conventional cutting method is that operators jointly hold the steel pipe and then send it to the cutting equipment for cutting.

[0004] The above-mentioned manual handling method for steel pipes is too labor-consuming and inefficient, which will greatly delay the production efficiency of steel pipes and has obvious deficiencies. Summary of the Invention

[0005] In order to improve the problem that the transfer of steel pipes is still carried out manually, the present application provides a steel pipe end cutting device.

[0006] The steel pipe end cutting device provided by the present application adopts the following technical solutions:

[0007] A steel pipe end cutting device includes two sawing machines arranged on the ground, a bearing frame is arranged between the two sawing machines, and a feeding roller path, a discharging roller path and a transfer roller path parallel to each other are arranged on the bearing frame. The transfer roller path is located between the feeding roller path and the discharging roller path. First transfer components for transferring steel pipes are arranged between the feeding roller path and the transfer roller path, and between the transfer roller path and the discharging roller path. The first transfer component includes a driving motor arranged on the bearing frame and electrically connected to the control system, and a driving rod rotatably arranged on the bearing frame and parallel to the transfer roller path. One end of the driving rod is coaxially arranged on the output shaft of the driving motor, and a plurality of pipe-lifting plate arms are axially arranged on the driving rod, and the end of the pipe-lifting plate arm is J-shaped.

[0008] By adopting the above technical solutions, the feeding roller path transports the steel pipe to the side of the first transfer component. Then the control system starts the driving motor, and the output shaft of the driving motor drives a plurality of pipe-lifting plate arms to rotate through the driving rod. Thus, the J-shaped end of the pipe-lifting plate arm lifts the steel pipe on the feeding roller path. As the pipe-lifting plate arm continues to rotate, the steel pipe rolls onto the transfer roller path. Then the transfer pipeline sends the steel pipe into the two sawing machines in sequence to realize end cutting. Then the first transfer component transfers the steel pipe from the transfer roller path to the discharging roller path and transports it to the next process. The whole process does not require manual handling, which not only saves labor but also improves production efficiency.

[0009] Optionally, a plurality of feeding roller racks are further arranged on the carrier frame between the transfer roller path and the loading roller path, and the top surface of the feeding roller rack is arranged to incline downward along the direction from the loading roller path to the transfer roller path.

[0010] By adopting the above technical solution, when the distance between the transfer roller path and the loading roller path is relatively large, resulting in the steel pipe on the pipe lifting plate arm being unable to directly roll onto the transfer roller path, multiple feeding roller racks cooperate to play a role in transferring the steel pipe, and the steel pipe rolls from the pipe lifting plate arm onto the feeding roller rack and rolls along its inclined direction.

[0011] Optionally, a baffle is arranged on the carrier frame at a position relatively close to the transfer roller path of the feeding roller rack. The top end of the baffle is higher than the top surface of the feeding roller rack, and a second material transfer component for transferring the steel pipe from the feeding roller rack to the transfer roller path is further arranged on the carrier frame.

[0012] By adopting the above technical solution, the baffle plays a role in blocking the steel pipe, reducing the possibility that the latter steel pipe rolls onto the transfer roller path before the previous steel pipe has been completely sawed. After the previous steel pipe is removed from the transfer roller path, the second material transfer component then enables the steel pipe to cross the top end of the baffle and be transferred onto the transfer roller path.

[0013] Optionally, the second material transfer component includes a plurality of transfer plates hinged on the carrier frame and a plurality of telescopic cylinders. The telescopic cylinders are electrically connected to the control system and the piston rods are hinged to the transfer plates. When the transfer plates rotate to the vertical position, the top wall of the transfer plate inclines downward along the direction where the two ends approach each other, and the lowest point of the top wall is exactly opposite to the transfer roller path.

[0014] By adopting the above technical solution, the control system starts the telescopic cylinder, and the piston rod of the telescopic cylinder extends, so that the transfer plate rotates. The top wall of the transfer plate jacks up the steel pipe on the feeding roller rack. When the steel pipe crosses the top end of the baffle, it rolls to the lowest point of the top wall of the transfer plate, and then the piston rod of the telescopic cylinder retracts, and the steel pipe automatically falls onto the transfer roller path.

[0015] Optionally, a chute is opened on the feeding roller rack along its inclined direction, and a buffer plate extending outside the chute slides in the chute, and an elastic member is propped between the buffer plate and the bottom end of the chute.

[0016] By adopting the above technical solution, when the steel pipe rolls from a high place to a low place on the feeding roller rack, the buffer plate supports the steel pipe and squeezes the elastic member, thereby playing a role in buffering and decelerating the downward rolling of the steel pipe, and reducing the possibility that the outer surface of the steel pipe is damaged by hitting the baffle.

[0017] Optionally, the elastic member includes an elastic plate. A plurality of rotating rods are arranged on the elastic plate along the inclined direction of the feeding roller rack. A slider that slides in a chute is rotatably fitted on the rotating rod. An arc-shaped piece is arranged on the slider. The inner arc surface of the arc-shaped piece faces the rotating rod. The distance between the arc-shaped piece and the corresponding rotating rod gradually decreases along the arc surface direction of the arc-shaped piece. The relative inclined directions of the arc-shaped pieces on adjacent two sliders are opposite. An elastic piece for pressing against the inner arc surface of the corresponding arc-shaped piece is arranged on the rotating rod. Fixed rods are arranged on both of the two outermost sliders. Both ends of the elastic plate correspond to and are connected to one fixed rod respectively.

[0018] By adopting the above technical solution, when the steel pipe rolls from a high place to a low place on the feeding roller rack, each slider is forced to move closer to the low place, and the elastic piece pressing against the arc-shaped piece restores deformation, thereby driving the corresponding rotating rod to rotate. The cooperation of multiple groups of elastic pieces and arc-shaped pieces makes the elastic plate bend and deform in a wavy shape and stack. The deformation force of the elastic plate acts on the steel pipe in the opposite direction, thereby playing a role in buffering and decelerating the downward rolling of the steel pipe.

[0019] Optionally, a plurality of mounting holes are spaced apart along the length direction of the elastic plate. The rotating rod is bolted to the elastic plate through the mounting holes.

[0020] By adopting the above technical solution, the worker manually adjusts the bolting position of the rotating rod, thereby changing the bending radius when the elastic plate bends in a wavy shape, and further adjusting the buffering performance of the elastic member, so as to be applicable to steel pipes of different sizes.

[0021] Optionally, rollers for rolling in the chute are arranged on both the buffer plate and the slider.

[0022] By adopting the above technical solution, the rollers are beneficial to improving the smoothness of the buffer plate and the slider when moving in the chute.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The loading roller path conveys the steel pipe to the side of the first material transfer component. Then the control system starts the driving motor. The output shaft of the driving motor drives a plurality of pipe-lifting plate arms to rotate through the driving rod. In this way, the J-shaped end of the pipe-lifting plate arm lifts the steel pipe on the loading roller path. As the pipe-lifting plate arm continues to rotate, the steel pipe rolls onto the transfer roller path. Then the transfer pipe successively sends the steel pipe into two sawing machines to realize end cutting. Then the first material transfer component transfers the steel pipe from the transfer roller path to the unloading roller path and conveys it to the next process. The whole process does not require manual handling, which not only saves manpower but also improves production efficiency;

[0025] 2. When the steel pipe rolls from a high place to a low place on the feeding roller frame, the buffer plate supports the steel pipe and squeezes the elastic member, thereby buffering and decelerating the downward rolling of the steel pipe, reducing the possibility of damage to the outer surface of the steel pipe when it impacts the baffle;

[0026] 3. The worker manually adjusts the bolted position of the rotating rod, thereby changing the bending radius when the elastic plate is bent in a wave shape, thereby adjusting the buffering performance of the elastic member, and thus being applicable to steel pipes of different sizes. Brief Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of an embodiment of the present application.

[0028] Figure 2 It is an exploded view of the positional relationship between the elastic plate and the feeding roller frame in an embodiment of the present application.

[0029] Figure 3 It is Figure 2 An enlarged view of part A in

[0030] Figure 4 It is a cross-sectional view when the elastic plate deforms under force in an embodiment of the present application.

[0031] Description of the reference numerals: 1, sawing machine; 2, bearing frame; 3, loading roller path; 4, unloading roller path; 11, transfer roller path; 5, first material transfer assembly; 51, driving motor; 52, driving rod; 53, pipe lifting plate arm; 6, feeding roller frame; 61, sliding groove; 7, baffle; 81, material transfer plate; 9, buffer plate; 101, elastic plate; ①, mounting hole; 102, rotating rod; 103, slider; 104, arc piece; 105, fixed rod; 107, elastic piece. Detailed Description of the Embodiment

[0032] The following Figures 1-4 further describes the present application in detail.

[0033] An embodiment of the present application discloses an equipment for cutting the end of a steel pipe.

[0034] Referring to Figure 1 , the equipment for cutting the end of a steel pipe includes two sawing machines 1 placed on the ground. A bearing frame 2 is placed between the two sawing machines 1. The bearing frame 2 is bolted with a loading roller path 3, an unloading roller path 4 and a transfer roller path 11 that are parallel to each other. The transfer roller path 11 is located between the loading roller path 3 and the unloading roller path 4.

[0035] Referring to Figure 1, a first material transfer component 5 for transferring steel pipes is bolted between the loading roller table 3 and the transfer roller table 11, and between the transfer roller table 11 and the unloading roller table 4. The first material transfer component 5 includes a driving motor 51 bolted to the carrier 2 and electrically connected to the control system. The driving motor 51 is a forward and reverse motor in the prior art.

[0036] Refer to Figure 1 , the output shaft of the driving motor 51 is coaxially connected through a coupling to a driving rod 52 rotatably mounted on the carrier 2. A plurality of pipe lifting plate arms 53 are axially spaced and welded on the driving rod 52. Both ends of the pipe lifting plate arm 53 are J-shaped.

[0037] Refer to Figure 1 , a plurality of feeding roller frames 6 are also bolted on the carrier 2 between the transfer roller table 11 and the loading roller table 3. The feeding roller frames 6 are perpendicular to the transfer roller table 11, and the top surface of the feeding roller frames 6 is arranged to slope downward along the direction from the loading roller table 3 to the transfer roller table 11.

[0038] Refer to Figure 1 , the steel pipe to be sawed is conveyed by the loading roller table 3 to the side of the first material transfer component 5. Then the control system starts the driving motor 51. The output shaft of the driving motor 51 drives a plurality of pipe lifting plate arms 53 to rotate synchronously through the driving rod 52. The J-shaped ends of the plurality of pipe lifting plate arms 53 cooperate to lift the steel pipe.

[0039] As the pipe lifting plate arms 53 continue to rotate, the steel pipe rolls on the pipe lifting plate arms 53 and then rolls onto each feeding roller frame 6 and rolls along the inclined direction of the feeding roller frame 6.

[0040] Refer to Figure 1 , a plurality of baffles 7 are bolted on the carrier 2 at a position relatively close to the transfer roller table 11 with respect to the feeding roller frames 6. The plurality of baffles 7 are arranged at intervals along the length direction of the transfer roller table 11. The top of the baffle 7 is higher than the top surface of the feeding roller frame 6.

[0041] The baffle 7 plays a role in blocking the steel pipe, preventing the steel pipe from directly rolling onto the transfer roller table 11. After the previous steel pipe on the transfer roller table 11 is removed, the subsequent steel pipe can be transferred onto the transfer roller table 11.

[0042] Refer to Figure 1 , a second material transfer component for transferring the steel pipe from the feeding roller frame 6 to the transfer roller table 11 is also arranged on the carrier 2. The second material transfer component includes a plurality of transfer plates 81 hinged on the carrier 2 and a plurality of telescopic cylinders (not shown in the figure), and one transfer plate 81 corresponds to one telescopic cylinder.

[0043] The telescopic cylinder is electrically connected to the control system and the piston rod is hinged to the corresponding transfer plate 81. The control system starts the telescopic cylinder, and the piston rod of the telescopic cylinder extends to push the transfer plate 81 to rotate, and the cylinder body of the telescopic cylinder also rotates a certain angle. During this process, the top wall of the transfer plate 81 will be close to the steel pipe at the baffle 7 and push it upward.

[0044] Reference Figure 1 When the transfer plate 81 rotates to a vertical position, the top wall of the transfer plate 81 tilts downward in the direction in which the two ends approach each other. In this way, when the steel pipe is higher than the top of the baffle 7, the steel pipe will pass over the top of the baffle 7 and roll to the lowest point of the top wall of the transfer plate 81.

[0045] Since the lowest point of the transfer plate 81 is just opposite to the transfer roller 11 , when the piston rod of the telescopic cylinder retracts, the steel pipe on the transfer plate 81 will automatically fall onto the transfer roller 11 .

[0046] Reference Figure 1 At this time, the clamping table of the sawing machine 1 will move out of the machine body and clamp the end of the steel pipe, and then pull its end into the machine body for end cutting. After that, the steel pipe is moved to another sawing machine 1 through the transfer roller 11 to realize the end cutting of the other end.

[0047] Since the feed ports of the two sawing machines 1 may not be on the same straight line, two transfer rollers 11 may be arranged in parallel on the carrier 2, and a second transfer assembly or a first transfer assembly 5 may be arranged between the two transfer rollers 11 to realize the transfer of steel pipes.

[0048] Reference Figure 1 In addition, the transfer roller 11 may not have its own driving force, so the carrier 2 may be provided with a driving source used in the prior art to drive the steel pipe to move on the roller.

[0049] Reference Figure 2 、 Figure 3 and Figure 4 A slide groove 61 is provided on the feed roller 6 along its inclined direction, and a buffer plate 9 outside the slide groove 61 of the extension device slides in the slide groove 61, and an elastic member is supported between the buffer plate 9 and the bottom end of the slide groove 61.

[0050] When the steel pipe rolls down from the tube lifting plate arm 53 to the feeding roller 6, the steel pipe will push the buffer plate 9 to move obliquely downward, and the elastic part will be deformed under the force, thereby buffering and slowing down the steel pipe, reducing the possibility of the steel pipe rigidly colliding with the baffle 7 and causing damage to its outer surface.

[0051] Reference Figure 2 、 Figure 3 and Figure 4, the elastic member includes elastic plates 101 arranged along the length direction of the feeding roller frame 6. On both sides of the elastic plates 101 in the length direction, a plurality of rotating rods 102 are arranged along the inclined direction of the feeding roller frame 6. A slider 103 that slides in the chute 61 is rotatably fitted on the rotating rod 102.

[0052] An arc-shaped piece 104 is integrally formed on the slider 103. The inner arc surface of the arc-shaped piece 104 faces the rotating rod 102. The distance between the arc-shaped piece 104 and the corresponding rotating rod 102 gradually decreases along the arc surface direction of the arc-shaped piece 104. The relative inclined directions of the arc-shaped pieces 104 on adjacent two sliders 103 are opposite.

[0053] An elastic piece 107 for abutting against the inner arc surface of the corresponding arc-shaped piece 104 is welded on the rotating rod 102. A fixing rod 105 is welded between the two outermost groups of sliders 103. Both ends of the elastic plate 101 correspond to a fixing rod 105 and are welded to it.

[0054] Refer to Figure 2 , Figure 3 and Figure 4 , when the buffer plate 9 is at the high position of the feeding roller frame 6, the elastic plate 101 is in a straight state. At this time, the elastic piece 107 on the rotating rod 102 abuts against the inner arc surface of the arc-shaped piece 104 and deforms to the maximum extent.

[0055] When the steel pipe rolls from the high position to the low position on the feeding roller frame 6, each slider 103 is forced to move closer to the low position, and the elastic piece 107 abutting against the arc-shaped piece 104 recovers its deformation, thereby driving the corresponding rotating rod 102 to rotate.

[0056] The cooperation of multiple groups of elastic pieces 107 and arc-shaped pieces 104 makes the elastic plate 101 bend and stack in a wavy shape. The deformation force of the elastic plate 101 acts on the steel pipe in the opposite direction, thereby playing a role in buffering and decelerating the downward rolling of the steel pipe.

[0057] Refer to Figure 2 , Figure 3 and Figure 4 , a plurality of mounting holes 1011 are spaced apart along the length direction of the elastic plate 101. The rotating rod 102 is bolted to the elastic plate 101 through the mounting holes 1011. Workers manually adjust the bolted position of the rotating rod 102, thereby changing the bending radius when the elastic plate 101 bends in a wavy shape, and further adjusting the buffering performance of the elastic member, so as to be applicable to steel pipes of different sizes.

[0058] Refer to Figure 2 , Figure 3 and Figure 4 , rollers (not shown in the figure) for rolling in the chute 61 are bolted to both the buffer plate 9 and the slider 103. The rollers are beneficial to improving the smoothness of the buffer plate 9 and the slider 103 when moving in the chute 61.

[0059] The implementation principle of the steel pipe end cutting device in the embodiment of the present application is as follows:

[0060] The steel pipe to be sawed is transported by the loading roller 3 to the side of the first material transfer assembly 5, and then the control system starts the drive motor 51. The output shaft of the drive motor 51 drives multiple tube lifting plate arms 53 to rotate synchronously through the drive rod 52, and the J-shaped ends of the multiple tube lifting plate arms 53 cooperate to lift the steel pipe.

[0061] As the tube lifting plate arm 53 continues to rotate, the steel pipe rolls on the tube lifting plate arm 53, then rolls down onto each feeding roller frame 6, and rolls along the inclined direction of the feeding roller frame 6. The steel pipe pushes the buffer plate 9 to move obliquely downward, and each slider 103 is forced to move downward, and the elastic piece 107 pressed against the arc piece 104 recovers its deformation, thereby driving the corresponding rotating rod 102 to rotate.

[0062] Multiple groups of elastic sheets 107 and arc sheets 104 cooperate to make the elastic sheets 101 bend and deform in a wave-like manner and stack. The deformation force of the elastic sheets 101 reacts on the steel pipe, thereby buffering and slowing down the oblique downward rolling of the steel pipe until the steel pipe approaches the baffle 7.

[0063] The control system activates the telescopic cylinder, and the piston rod of the telescopic cylinder extends, pushing the transfer plate 81 to rotate. During this process, the top wall of the transfer plate 81 presses against the steel pipe at the baffle 7 and pushes it upward. When the steel pipe is higher than the top of the baffle 7, it passes over the top of the baffle 7 and rolls to the lowest point of the top wall of the transfer plate 81. When the piston rod of the telescopic cylinder retracts, the steel pipe on the transfer plate 81 automatically falls onto the transfer roller 11.

[0064] At this time, the clamping table of the sawing machine 1 will move out of the machine body and clamp the end of the steel pipe, and then pull its end into the machine body for end cutting. The steel pipe then moves to another sawing machine 1 through the transfer roller 11 to achieve end cutting at the other end.

[0065] After the end sawing is completed, another set of first material transfer components 5 transfers the steel pipe from the transfer roller 11 to the unloading roller 4, and is transported to the next process. The entire process does not require manual participation in handling, which not only saves manpower but also improves production efficiency.

[0066] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A steel pipe end cutting device, comprising two sawing machines (1) arranged on the ground, a bearing frame (2) is arranged between the two sawing machines (1), and a feeding roller path (3), a discharging roller path (4) and a transfer roller path (11) which are parallel to each other are arranged on the bearing frame (2), the transfer roller path (11) is located between the feeding roller path (3) and the discharging roller path (4), and is characterized in that: A first material transfer assembly (5) for transferring steel pipes is arranged between the loading roller path (3) and the transfer roller path (11), and between the transfer roller path (11) and the unloading roller path (4). The first material transfer assembly (5) includes a driving motor (51) arranged on a bearing frame (2) and electrically connected to a control system, and a driving rod (52) rotatably mounted on the bearing frame (2) and parallel to the transfer roller path (11). One end of the driving rod (52) is coaxially arranged on the output shaft of the driving motor (51). A plurality of pipe-lifting plate arms (53) are axially arranged on the driving rod (52), and the end of the pipe-lifting plate arm (53) is J-shaped. A plurality of feeding roller frames (6) are further arranged on the bearing frame (2) between the transfer roller path (11) and the loading roller path (3). The top surface of the feeding roller frame (6) is arranged to incline downward along the direction from the loading roller path (3) to the transfer roller path (11). A baffle (7) is arranged on the bearing frame (2) at a position close to the transfer roller path (11) relative to the feeding roller frame (6). The top end of the baffle (7) is higher than the top surface of the feeding roller frame (6). A second material transfer assembly for transferring the steel pipe from the feeding roller frame (6) to the transfer roller path (11) is further arranged on the bearing frame (2). A chute (61) is formed on the feeding roller frame (6) along its inclined direction. A buffer plate (9) extending outside the chute (61) is slidably arranged in the chute (61). An elastic member is propped between the buffer plate (9) and the bottom end of the chute (61). The elastic member includes an elastic plate piece (101). A plurality of rotating rods (102) are arranged on the elastic plate piece (101) along the inclined direction of the feeding roller frame (6). A sliding block (103) slidably arranged in the chute (61) is rotatably fitted on the rotating rod (102). An arc piece (104) is arranged on the sliding block (103). The inner arc surface of the arc piece (104) faces the rotating rod (102). The distance between the arc piece (104) and the corresponding rotating rod (102) gradually decreases along the arc surface direction of the arc piece (104). The relative inclined directions of the arc pieces (104) on adjacent two sliding blocks (103) are opposite. An elastic piece (107) for pressing against the inner arc surface of the corresponding arc piece (104) is arranged on the rotating rod (102). Fixed rods (105) are arranged on both the two outermost sliding blocks (103). Both ends of the elastic plate piece (101) correspond to one fixed rod (105) and are connected thereto.

2. The steel pipe end cutting device according to claim 1, characterized in that: The second material transfer assembly includes a plurality of transfer plates (81) hinged on the bearing frame (2) and a plurality of telescopic cylinders. The telescopic cylinders are electrically connected to the control system and the piston rods are hinged on the transfer plates (81). When the transfer plate (81) rotates to be vertical, the top wall of the transfer plate (81) inclines downward along the direction where the two ends approach each other, and the lowest point of the top wall is exactly opposite to the transfer roller path (11).

3. The steel pipe end cutting device according to claim 1, characterized in that: A plurality of mounting holes (1011) are spaced along the length direction of the elastic plate piece (101). The rotating rod (102) is bolted on the elastic plate piece (101) through the mounting hole (1011).

4. The steel pipe end cutting device according to claim 1, characterized in that: Rollers for rolling in the sliding groove (61) are arranged on both the buffer plate (9) and the slider (103).

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