Pipe bending equipment

Abstract

The invention discloses pipe bending equipment, and relates to the technical field of pipe bending, the pipe bending equipment comprises a bending mechanism used for bending a linear steel pipe into a U-shaped steel pipe, and further comprises an arc-shaped motor, the track of the arc-shaped motor is an arc-shaped track, and when the moving ends of the arc-shaped motor are located at the two ends of the arc-shaped track, the moving ends of the arc-shaped motor are located at a first falling point and a second falling point correspondingly; when the bending mechanism conducts bending operation, the moving end of the arc-shaped motor can synchronously move to the second falling point from the first falling point. The pipe bearing mechanism is used for bearing linear steel pipes or U-shaped steel pipes; the linear motor is arranged between the moving end of the arc-shaped motor and the pipe bearing mechanism and used for bearing the pipe bearing mechanism and enabling the pipe bearing mechanism and the U-shaped steel pipe to be separated from the bending mechanism. According to the bending mechanism, the steel pipe in the bending process can be automatically supported and bent in an auxiliary mode, and the bent U-shaped steel pipe can be automatically separated from the bending mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of pipe bending, and in particular to a pipe bending device. Background Art

[0002] After the production and processing of straight steel pipes, in order to meet the processing requirements of some fields, the straight steel pipes need to be bent into U-shaped steel pipes. Bending equipment is a common equipment used to bend straight steel pipes into U-shaped steel pipes.

[0003] Most of the existing pipe bending equipment includes an operating table and an extension base arranged on one side of the operating table. Two parallel groups of cylinders are respectively arranged on the top wall of the operating table and the side wall of the extension base. When the cylinders are in the standby state, the two groups of cylinders are located on the same side of the width direction of the operating table. A first pipe-receiving block for abutting against the straight steel pipe is arranged on the output end of the cylinder located on the operating table, and the end face of the first pipe-receiving block that can abut against the straight steel pipe is a plane; the extension base is a cylindrical base, and a spindle-shaped guide rod is fixed on the top wall of the extension base in the vertical direction, and the concave part on the guide rod is used for placing the straight steel pipe; the cylinder located on the extension base is installed on the side wall of the extension base so as to be rotatable around the outer circumference of the extension base through a steering mechanism, and a second pipe-receiving block with an arc-shaped end face is arranged on the output end of the cylinder, and the second pipe-receiving block corresponds to the guide rod. After the operator places the straight steel pipe on the concave part of the guide rod, the two cylinders extend their output ends at the same time, and the first pipe-pushing block and the second pipe-pushing block simultaneously press against the straight steel pipe, and the second pipe-pushing block can press against the side wall of the guide rod. The steering mechanism drives the cylinder on the extension base to rotate along the periphery of the extension base. During this process, the second pipe-pushing block presses the straight steel pipe against the guide rod, and while rotating around the periphery of the guide rod, the end of the straight steel pipe away from the first pipe-pushing block is bent along the periphery of the guide rod until the straight steel pipe is bent into a U-shaped steel pipe.

[0004] However, in the process of bending the straight steel pipe into a U-shaped steel pipe, the operator needs to lift the end of the straight steel pipe away from the extension base and apply force to lift it upward to prevent the end of the straight steel pipe away from the extension base from falling toward the ground, which may cause inconvenience in bending into a U-shaped steel pipe; and the operator is required to lift the straight steel pipe along the bending trajectory of the straight steel pipe while pushing the straight steel pipe to move along the bending trajectory, which is very inconvenient; in addition, after the straight steel pipe is bent into a U-shaped steel pipe, the operator is required to push the U-shaped steel pipe to move the U-shaped steel pipe away from the operating table to escape from the concave part of the U-shaped steel pipe; then, the U-shaped steel pipe is pulled upward to move the U-shaped steel pipe above the guide rod to escape from the guide rod and provide the subsequent straight steel pipe for continuing to bend on the guide rod; the entire bending process consumes a lot of manpower and is highly cumbersome, and there is a problem that it is difficult to ensure the uniformity of the bending quality of the U-shaped steel pipe due to the high degree of manpower intervention, so it needs to be improved. Summary of the invention

[0005] Purpose of the invention: The present application provides a pipe bending device, which aims to improve the technical problems of low automation, high complexity and difficulty in unifying the bending quality during the bending process of steel pipes.

[0006] Technical solution: The present application provides a pipe bending device, comprising a bending mechanism for bending a straight steel pipe into a U-shaped steel pipe, and an arc motor, which is arranged on one side of the bending mechanism; the track of the arc motor is an arc track extending along the trajectory of the bending mechanism to bend the straight steel pipe into the U-shaped steel pipe; when the moving end of the arc motor is at one end of the arc track, it is at a first landing position, and at this time, the moving end of the arc motor is below the end of the straight steel pipe away from the bending mechanism; when the moving end of the arc motor is at the other end of the arc track, it is at a second landing position, and at this time, the moving end of the arc motor is below the bent end of the U-shaped steel pipe; when the bending mechanism bends the straight steel pipe into the U-shaped steel pipe, the moving end of the arc motor The end can be synchronously moved from the first landing position to the second landing position; the bearing mechanism is configured on the moving end of the arc motor; when the moving end of the arc motor is at the first landing position, the bearing mechanism can bear the end of the straight steel pipe away from the bending mechanism; after the moving end of the arc motor moves from the first landing position to the second landing position, the bearing mechanism can first move to the bottom of the U-shaped steel pipe, and then simultaneously support the two parallel ends of the U-shaped steel pipe after bending; the linear motor, the linear motor is configured between the moving end of the arc motor and the bearing mechanism, for bearing the bearing mechanism, and can carry the bearing mechanism and the U-shaped steel pipe out of the bending mechanism when the moving end of the arc motor is at the second landing position.

[0007] By adopting the above technical solution, the pipe-bearing mechanism is installed on the moving end of the arc motor through the linear motor. When the output end of the arc motor is located at the first landing point, the pipe-bearing mechanism can stably bear the straight steel pipe together with the bending mechanism at the first landing point; in the process of the bending mechanism bending the straight steel pipe into a U-shaped steel pipe, the moving end of the arc motor can move from the first landing point to the second landing point along the extension direction of the arc track. In this process, the pipe-bearing mechanism can always stably bear the straight steel pipe or the U-shaped steel pipe, ensuring that the straight steel pipe can be bent into a U-shaped steel pipe without human intervention. It is bent into a U-shaped steel pipe; after the moving end of the arc motor reaches the second landing point, the supporting mechanism can also support the two parallel ends of the U-shaped steel pipe at the same time, and the moving end of the linear motor can move toward the first landing point, so that the bent part of the U-shaped steel pipe can move away from the bending mechanism in the horizontal direction; this process realizes the automated acceptance and auxiliary bending in the process of bending the straight steel pipe, as well as the automated support and separation of the U-shaped steel pipe from the bending mechanism, which effectively reduces human intervention, and helps to ensure the quality uniformity of the bending mechanism for bending the straight steel pipe through automated operation.

[0008] Furthermore, the pipe-bearing mechanism comprises: a bottom bearing cylinder, which is arranged on the moving end of the linear motor, and a middle bearing assembly is arranged on the output end of the bottom bearing cylinder; a pipe-bearing block, which is arranged on the middle bearing assembly; a pipe-bearing channel for placing a linear steel pipe or a U-shaped steel pipe is provided through the top wall of the pipe-bearing block; a middle shifting assembly, which is arranged between the pipe-bearing block and the middle bearing assembly, and can move along the height direction of the pipe-bearing block and can position the linear steel pipe or the U-shaped steel pipe in the pipe-bearing channel; a side bearing assembly, which is arranged on the middle bearing assembly; wherein, When the moving end of the arc motor is located at the first landing point, the side bearing assembly is located below the bearing tube channel; after the moving end of the arc motor moves to the second landing point, one end of the U-shaped steel pipe is located inside the side wall of the bearing tube channel, and the middle shift assembly can carry the side bearing assembly to move upward, so that the side bearing assembly can receive the other end of the U-shaped steel pipe; and the moving end of the linear motor can move toward the first landing point, and the output end of the bottom bearing cylinder can extend outward, so that the bottom bearing cylinder can lift the U-shaped steel pipe to above the bending mechanism.

[0009] By adopting the above technical scheme, the pipe-bearing block is installed on the moving end of the linear motor through the bottom bearing cylinder, so that the pipe-bearing block can stably bear the straight steel pipe through the pipe-bearing channel; the middle shift component can stably press the straight steel pipe or U-shaped steel pipe in the pipe-bearing channel, reducing the phenomenon of the straight steel pipe or U-shaped steel pipe detaching from the pipe-bearing block; the side bearing component can lift the U-shaped steel pipe together with the pipe-bearing block at the second landing point, which helps to stably bear the U-shaped steel pipe and promote the U-shaped steel pipe to automatically detach from the bending mechanism.

[0010] Furthermore, the middle bearing assembly includes a support plate arranged on the output end of the bottom bearing cylinder, a pillar arranged on the support plate for mounting the bearing block, and a sliding sleeve slidably connected to the pillar; the middle shift assembly and the side bearing assembly are respectively located on opposite sides of the bearing block, and the side bearing assembly can move synchronously with the middle shift assembly along the height direction of the bearing block.

[0011] By adopting the above technical solution, the support plate is used to stably support the pillar, thereby ensuring the installation stability of the bearing block on the pillar; in addition, the support plate can also be abutted by the middle shift assembly to move relative to the bearing block; the sliding sleeve simultaneously connects the middle shift assembly and the side bearing assembly to ensure that the middle shift assembly and the side bearing assembly move simultaneously along the height direction of the bearing block.

[0012] Furthermore, the center shift assembly includes: a guide column, which is arranged on the side wall of the bearing block, and the guide column extends along the height direction of the bearing block; a movable sleeve, which is fitted on the guide column and can move along the height direction of the guide column; a center shift cylinder, which is fixed on the side wall of the movable sleeve, and the center shift cylinder is fixedly connected to the sliding sleeve, and the output end of the center shift cylinder is fixedly connected to the top wall of the support plate; a pipe-holding unit, which is arranged on the center shift cylinder; after the output end of the center shift cylinder is retracted, a straight steel pipe or a U-shaped steel pipe can be pressed tightly into the bearing channel; after the output end of the center shift cylinder is extended, it can be detached from the straight steel pipe or the U-shaped steel pipe and away from the bearing block.

[0013] By adopting the above technical scheme, the center shift cylinder is slidably connected to the guide column through the movable sleeve. After the output end of the center shift cylinder is extended, it can move relative to the support plate in the direction away from the support plate, thereby causing the pipe-resisting unit to move above the pipe-bearing block, thereby achieving the effect of the pipe-resisting unit approaching or moving away from the pipe-bearing block in the vertical direction during the process of extending and retracting the output end of the center shift cylinder, thereby helping to position the straight steel pipe or U-shaped steel pipe in the pipe-bearing channel, or facilitating the straight steel pipe to enter the pipe-bearing channel, or facilitating the U-shaped steel pipe to leave the pipe-bearing channel.

[0014] Furthermore, the pipe-pushing unit comprises: a reversing motor, which is arranged on the center-shifting cylinder; a top plate, which is arranged on the output end of the reversing motor, and a contact-tube block is provided on the bottom wall of the top plate; after the output end of the center-shifting cylinder is extended, the reversing motor can rotate the output end so that the end of the top plate with the contact-tube block is close to or away from the pipe-bearing channel; after the output end of the center-shifting cylinder is contracted, the end of the top plate with the contact-tube block can press the straight steel pipe or the U-shaped steel pipe against the pipe in the pipe-bearing channel, or the top plate is located on one side of the pipe-bearing block.

[0015] By adopting the above technical scheme, the reversing motor can rotate the output end to make the end of the top plate with the contact tube block rotate to the side of the supporting tube block. At this time, it is convenient for the straight steel pipe to enter the supporting tube channel or for the U-shaped steel pipe to leave the supporting tube channel; after the reversing motor rotates the output end and makes the end of the top plate with the contact tube block rotate to the top of the supporting tube channel, as the middle shift cylinder contracts the output end, the end of the top plate with the contact tube block can be pushed into the supporting tube channel, thereby ensuring the position stability of the straight steel pipe or the U-shaped steel pipe in the supporting tube channel.

[0016] Furthermore, the side bearing assembly includes: an extension frame, one end of which is connected to the sliding sleeve; a side bearing block, which is arranged at the other end of the extension frame; a preset channel for placing one end of the U-shaped steel pipe is provided through the side bearing block; the pipe support unit also includes a connecting plate, which is arranged between the reversing motor and the sliding sleeve; when the reversing motor moves, the top plate, the sliding sleeve, the extension frame and the side bearing block can move synchronously.

[0017] By adopting the above technical solution, the side bearing block is arranged on one side of the sliding sleeve through an extension frame, so as to follow the extension and retraction of the output end of the middle shift cylinder and rise and fall in the vertical direction, so as to receive the U-shaped steel pipe between the bending mechanism and the U-shaped steel pipe.

[0018] Furthermore, the extension frame includes a vertical plate extending in the vertical direction and a first horizontal plate and a second horizontal plate located at both ends of the vertical plate in the height direction and located on opposite sides of the vertical plate; the first horizontal plate is located below the second horizontal plate, and one end of the first horizontal plate away from the vertical plate is connected to the sliding sleeve, and one end of the second horizontal plate away from the vertical plate is connected to the side bearing block.

[0019] By adopting the above technical solution, the first horizontal plate and the second horizontal plate are respectively connected to the sliding sleeve and the side bearing block on both sides of the vertical plate. The second horizontal plate with a higher horizontal position ensures that the side bearing block can always receive the U-shaped steel pipe between the U-shaped steel pipe and the bending mechanism, and the first horizontal plate is connected to the sliding sleeve to ensure that the side bearing block can always move in the vertical direction following the extension and retraction of the output end of the middle shift cylinder.

[0020] Furthermore, when the output end of the bottom bearing cylinder and the output end of the middle shifting cylinder are contracted, the second cross plate and the side bearing block are both located between the bending mechanism and the straight steel pipe or the U-shaped steel pipe.

[0021] By adopting the above technical solution, when the output end of the bottom bearing cylinder and the output end of the middle shift cylinder are in the retracted state, the second cross plate and the side bearing block are both located between the bending mechanism and the U-shaped steel pipe so that the side bearing block can receive the other end of the U-shaped steel pipe.

[0022] In summary, this application has at least the following beneficial technical effects: The pipe-bearing mechanism is installed on the moving end of the arc motor through a linear motor. When the output end of the arc motor is located at the first landing point, the pipe-bearing mechanism can stably bear the straight steel pipe at the first landing point together with the bending mechanism; in the process of the bending mechanism bending the straight steel pipe into a U-shaped steel pipe, the moving end of the arc motor can move from the first landing point to the second landing point along the extension direction of the arc track. In this process, the pipe-bearing mechanism can always stably bear the straight steel pipe or the U-shaped steel pipe, ensuring that the straight steel pipe can be bent into a U-shaped steel pipe without human intervention. Steel pipe; after the moving end of the arc motor reaches the second landing point, the supporting mechanism can also support the two parallel ends of the U-shaped steel pipe at the same time, and the moving end of the linear motor can move toward the first landing point, so that the bent part of the U-shaped steel pipe can be horizontally away from the bending mechanism; this process realizes the automated acceptance and auxiliary bending in the process of bending the linear steel pipe, as well as the automated support and separation of the U-shaped steel pipe from the bending mechanism, which effectively reduces human intervention, and helps to ensure the quality uniformity of the bending mechanism for bending the linear steel pipe through automated operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a pipe bending device in an embodiment of the present application; Figure 2 is a schematic diagram of the positional relationship between the arc motor and the supporting mechanism in the embodiment of the present application; Figure 3 It is a schematic diagram of the connection relationship between the middle bearing assembly, the middle shift assembly, and the side bearing assembly in the embodiment of the present application; Figure 4 It is a schematic diagram of a U-shaped steel pipe on a pipe-bearing mechanism in an embodiment of the present application; Figure 5 It is a schematic diagram of the connection relationship between the linear motor and the supporting mechanism in the embodiment of the present application.

[0024] Description of reference numerals: 1. Bending mechanism; 2. Arc motor; 21. Arc track; 22. First landing point; 23. Second landing point; 3. Pipe bearing mechanism; 4. Bottom bearing cylinder; 5. Pipe bearing block; 51. Pipe bearing channel; 6. Middle bearing assembly; 61. Support plate; 62. Pillar; 63. Sliding sleeve; 7. Middle shift assembly; 71. Guide column; 72. Moving sleeve; 73. Middle shift cylinder; 74. Pipe support unit; 741. Reversing motor; 742. Top plate; 743. Contact tube block; 744. Connecting plate; 8. Side bearing assembly; 81. Extension frame; 811. Vertical plate; 812. First horizontal plate; 813. Second horizontal plate; 82. Side bearing block; 821. Preset channel; 9. Linear motor. DETAILED DESCRIPTION

[0025] The embodiment of the present application discloses a pipe bending device.

[0026] The following is combined with Figure 1-5 This application is described in further detail.

[0027] Reference Figure 1 , a pipe bending device, used for bending a straight steel pipe into a U-shaped steel pipe. For the sake of ease of understanding and explanation, the straight steel pipes mentioned below refer to the straight steel pipes to be bent, and the U-shaped steel pipes mentioned below refer to the U-shaped steel pipes formed after the straight steel pipes are bent by the pipe bending device. The pipe bending device includes a bending mechanism 1, an arc motor 2 and a pipe bearing mechanism 3. Among them, the bending mechanism 1 is used to bend the straight steel pipe into a formed steel pipe. The pipe bearing mechanism 3 is used to replace the operator, which can automatically receive and pull up the straight steel pipe being bent, and the arc motor 2 is used to assist the pipe bearing mechanism 3 to move along the bending trajectory of the straight steel pipe.

[0028] Reference Figure 1 The arc motor 2 can be a two-degree-of-freedom linear arc motor 2, and the track of the arc motor 2 can be an arc track 21. The arc track 21 is fixed to the ground by bolts and is located on one side of the bending mechanism 1. In this embodiment, the extension track of the arc track 21 is the same as the bending track when the straight steel pipe is bent into a U-shaped steel pipe. Therefore, the supporting mechanism 3 provided on the arc motor 2 can provide stable support for the straight steel pipe or the U-shaped steel pipe during the process of bending the straight steel pipe into the U-shaped steel pipe, and can also move synchronously with the bending track of the straight steel pipe.

[0029] Reference Figure 1 , for the sake of ease of understanding and explanation, the position of the moving end of the arc motor 2 at both ends of the arc track 21 is used as an example for explanation. Among them, when the moving end of the arc motor 2 is located at one end of the arc track 21 in the length direction and is located below the straight steel pipe, the straight steel pipe is placed on the bending mechanism 1 and is in a state of waiting for bending; at this time, the position of the moving end of the arc motor 2 on the arc track 21 is defined as the first landing point 22. When the moving end of the arc motor 2 is located at the other end of the arc track 21 in the length direction and is located below the U-shaped steel pipe, at this time, the straight steel pipe has been bent into a U-shaped steel pipe by the bending mechanism 1, and the position of the moving end of the arc motor 2 on the arc track 21 is defined as the second landing point 23. That is to say, in the process of the straight steel pipe being bent into a U-shaped steel pipe by the bending mechanism 1, the moving end of the arc motor 2 moves synchronously from the first landing point 22 to the second landing point 23 on the arc track 21.

[0030] Reference Figure 2 The pipe-bearing mechanism 3 is arranged on the moving end of the arc motor 2 in the vertical direction. The pipe-bearing mechanism 3 is used to bear the straight steel pipe or the U-shaped steel pipe, and can follow the moving end of the arc motor 2 to move along the bending trajectory of the straight steel pipe to bend into the U-shaped steel pipe.

[0031] Reference Figure 2 The pipe bearing mechanism 3 includes a bottom bearing cylinder 4 and a pipe bearing block 5. The bottom bearing cylinder 4 is arranged on the moving end of the arc motor 2 in the vertical direction, and the output end of the bottom bearing cylinder 4 faces away from the moving end of the arc motor 2. The pipe bearing block 5 is arranged on the output end of the bottom bearing cylinder 4 in the horizontal direction, and a pipe bearing channel 51 is arranged through the top wall of the pipe bearing block 5 in the horizontal direction.

[0032] Reference Figure 1 and Figure 2 In the present embodiment, when the moving end of the arc motor 2 is located at the first landing point 22, the extension direction of the pipe-bearing channel 51 is the same as the length direction of the straight steel pipe on the bending mechanism 1, and when the output end of the bottom supporting cylinder 4 is in a contracted state, the end of the straight steel pipe away from the bending mechanism 1 is just placed in the pipe-bearing channel 51, so that the end of the straight steel pipe away from the bending mechanism 1 can be stably supported by the pipe-bearing block 5, thereby reducing the phenomenon that the end of the pipe-bearing block 5 away from the bending mechanism 1 falls to the ground and affects the bending of the straight steel pipe into a U-shaped steel pipe.

[0033] Reference Figure 1 and Figure 2 It should be noted that, except for some straight steel pipes with processing toughness requirements, the output end of the arc motor 2 will extend outward only when it stays at the second landing point 23. When the output end of the arc motor 2 is at any other position of the arc track 21 except the second landing point 23, it is in a retracted state to stably receive the straight steel pipe or U-shaped steel pipe.

[0034] Reference Figure 2 and Figure 3 In order to ensure the stability of the pipe bearing block 5 in receiving the straight steel pipe or U-shaped steel pipe and carrying the straight steel pipe or U-shaped steel pipe for movement, a middle bearing assembly 6 is further provided on the output end of the bottom bearing cylinder 4, and a middle shift assembly 7 is provided between the middle bearing assembly 6 and the pipe bearing block 5. The middle bearing assembly 6 can ensure the installation stability and application stability of the middle shift assembly 7 and the pipe bearing block 5 on the bottom bearing cylinder 4, and the middle shift assembly 7 can move relative to the pipe bearing block 5, thereby stably positioning the straight steel pipe or U-shaped steel pipe in the pipe bearing channel 51, so as to reduce the operation of additionally pulling the straight steel pipe or U-shaped steel pipe upward, and ensure the position stability of the straight steel pipe or U-shaped steel pipe during the movement process.

[0035] Reference Figure 3The middle bearing assembly 6 includes a support plate 61, a pillar 62 and a sleeve 63, wherein the support plate 61 can be a horizontal solid steel plate. The support plate 61 is welded to the top wall of the output end of the bottom bearing cylinder 4 in the horizontal direction, and the outer circumference of the support plate 61 is larger than the outer circumference of the pipe block 5. The pillar 62 can be a solid steel pillar in the shape of a cylinder, and the sleeve 63 is an annular steel sleeve, and the sleeve 63 is adapted and can be slidably sleeved on the support plate 62. The pillar 62 is welded to the top wall of the support plate 61 in the vertical direction, and the pipe block 5 is welded to the end of the pillar 62 away from the support plate 61 in the horizontal direction to ensure the position stability of the pipe block 5. The sleeve 63 can slide between the support plate 61 and the pipe block 5 along the height direction of the pillar 62. The side bearing assembly 8 is also connected to the side wall of the sleeve 63, and the side bearing assembly 8 and the middle shift assembly 7 are respectively located at the radial ends of the sleeve 63, and the two can move synchronously during the movement of the sleeve 63.

[0036] Reference Figure 3 The middle shift assembly 7 includes a guide column 71, a moving sleeve 72, a middle shift cylinder 73 and a pipe-resisting unit 74. The guide column 71 can be a dovetail-shaped strip steel block, which is welded on the side wall of the pipe-bearing block 5 in the vertical direction, and extends in the height direction of the pipe-bearing block 5.

[0037] Reference Figure 3 The movable sleeve 72 can be a steel sliding sleeve 63 whose inner cavity size matches the outer circumference size of the guide column 71. The movable sleeve 72 is welded on the side wall of the middle shift cylinder 73. The middle shift cylinder 73 can be slidably arranged on the guide column 71 in the vertical direction through the sliding sleeve 63. In addition, the output end of the middle shift cylinder 73 is welded to the top wall of the support plate 61.

[0038] Reference Figure 3 The tube-contacting unit 74 includes a reversing motor 741, a top plate 742, a tube-contacting block 743 and a connecting plate 744. The reversing motor 741 can be a servo motor, which is fixed to the end wall of the middle-moving cylinder 73 away from its output end by bolts, and the main body of the reversing motor 741 is welded to the sliding sleeve 63 by the connecting plate 744, and the output end of the reversing motor 741 faces away from the output end of the middle-moving cylinder 73.

[0039] Reference Figure 3 The top plate 742 is welded to the output end of the reversing motor 741 in the horizontal direction, and the contact tube block 743 is welded to the bottom wall of the top plate 742. The contact tube block 743 is located at the end of the top plate 742 away from the reversing motor 741. In addition, the outer circumference size of the contact tube block 743 is matched with the inner diameter size of the inner cavity of the support tube channel 51.

[0040] Reference Figure 1 and Figure 3, when the output end of the middle shift cylinder 73 extends outward, the end of the middle shift cylinder 73 away from its output end can move on the guide column 71 through the moving sleeve 72, and move upward along the height direction of the bearing block 5. At this time, the sliding sleeve 63 can move upward synchronously along the height direction of the pillar 62, and a gap is left between the top plate 742 and the bearing block 5. After the reversing motor 741 rotates the output end, the end of the top plate 742 with the contact tube block 743 can move to the top of the bearing channel 51, or move to the side of the bearing block 5. When the end of the top plate 742 with the contact tube block 743 moves to the top of the bearing channel 51, the middle shift cylinder 73 can shrink the output end to press the straight steel pipe against the bearing channel 51, thereby ensuring the position stability of the straight steel pipe in the bearing channel 51 during the process of the moving end of the arc motor 2 moving from the first landing point 22 to the second landing point 23. It should be noted that the output end of the middle shift cylinder 73 is always in a retracted state when the output end is between the first landing point 22 and the second landing point 23. When the output end of the middle shift cylinder 73 is at the first landing point 22 or the second landing point 23, the output end can be retracted or extended according to demand.

[0041] Reference Figure 1 and Figure 3 When the moving end of the arc motor 2 moves from the first landing point 22 to the second landing point 23, the straight steel pipe has been bent into a U-shaped steel pipe. At this time, one of the two parallel ends of the U-shaped steel pipe is received by the pipe-bearing block 5, and the top plate 742 stabilizes one end of the U-shaped steel pipe in the pipe-bearing channel 51 through the pipe-contacting block 743.

[0042] Reference Figure 1 and Figure 3 The side bearing assembly 8 is used to receive the other end of the U-shaped steel pipe at the second landing point 23. The side bearing assembly 8 includes an extension frame 81 and a side bearing block 82. The extension frame 81 is Z-shaped, and includes a vertical plate 811, a first horizontal plate 812, and a second horizontal plate 813. The first horizontal plate 812 and the second horizontal plate 813 are respectively welded vertically on both sides of the vertical plate 811 in the width direction in the horizontal direction, and the first horizontal plate 812 and the second horizontal plate 813 are respectively located at both ends of the vertical plate 811 in the height direction. The first horizontal plate 812, the vertical plate 811, and the second horizontal plate 813 together form a Z shape.

[0043] Reference Figure 3 , one end of the first horizontal plate 812 away from the vertical plate 811 is welded to the side wall of the sliding sleeve 63 away from the connecting plate 744 in the horizontal direction, and one end of the second horizontal plate 813 away from the vertical plate 811 is welded to the side wall of the side bearing block 82 in the horizontal direction. In this embodiment, when the output end of the bottom bearing cylinder 4 and the output end of the middle shift cylinder 73 are in the contracted state, the second horizontal plate 813 and the side bearing block 82 are both located between the bending mechanism 1 and the U-shaped steel pipe, so that the side bearing block 82 can receive the other end of the U-shaped steel pipe.

[0044] Reference Figure 3 A preset channel 821 is provided through the top wall of the edge bearing block 82 in the horizontal direction. When the moving end of the arc motor 2 is located at the second landing point 23, the extension direction of the preset channel 821 is the same as the extension direction of the U-shaped steel pipe.

[0045] Reference Figure 3 and Figure 4 , when the output end of the middle shift cylinder 73 is in a contracted state, the side bearing block 82 is located below the tube block 5. Before the moving end of the arc motor 2 is at the first landing point 22 and reaches the second landing point 23, the side bearing block 82 always remains below the tube block 5. When the moving end of the arc motor 2 reaches the second landing point 23, the side bearing block 82 enters between the U-shaped steel pipe and the bending mechanism 1; then, the output end of the middle shift cylinder 73 extends outward, and the middle shift cylinder 73 simultaneously drives the top plate 742 and the side bearing block 82 to move upward until the top wall of the side bearing block 82 and the top wall of the tube block 5 are at the same horizontal height, so that the tube block 5 and the side bearing block 82 simultaneously receive the two ends of the U-shaped steel pipe.

[0046] Reference Figure 3 and Figure 4 In order to make the U-shaped steel pipe detach from the bending mechanism 1, the pipe bending device further includes a linear motor 9. The track of the linear motor 9 is fixed to the top wall of the moving end of the arc motor 2 in the horizontal direction by bolts. When the moving end of the arc motor 2 is located at the first landing point 22, the length direction of the linear motor 9 is the same as the length direction of the linear steel pipe. When the moving end of the arc motor 2 moves to the second landing point 23, the length direction of the linear motor 9 is the same as the length direction of the two parallel ends of the U-shaped steel pipe.

[0047] Reference Figure 4 and Figure 5 , the bottom bearing cylinder 4 is fixed to the top wall of the moving end of the linear motor 9 by bolts. In the process of the bending mechanism 1 bending the straight steel pipe into a U-shaped steel pipe, when the moving end of the arc motor 2 is located at the first landing point 22, the pipe block 5 receives the straight steel pipe in the horizontal direction through the pipe channel 51 and the bending mechanism 1. The output end of the middle displacement cylinder 73 is in a contracted state, and the top plate 742 presses the straight steel pipe against the pipe channel 51 through the pipe contact block 743, thereby ensuring the position stability of the straight steel pipe on the pipe block 5. The side bearing block 82 is located below the pipe block 5 and is in a standby state.

[0048] Reference Figure 4 and Figure 5 In the process of the bending mechanism 1 bending the steel pipe into a U-shaped steel pipe, the moving end of the arc motor 2 synchronously moves from the first landing point 22 to the second landing point 23, and the pipe-bearing block 5 and the top plate 742 with the contact pipe block 743 jointly bear and limit the end of the straight steel pipe away from the bending mechanism 1, ensuring that the straight steel pipe can be stably bent into a U-shaped steel pipe.

[0049] Reference Figure 4 and Figure 5 When the moving end of the arc motor 2 reaches the second landing point 23, the side bearing block 82 is located between the bending mechanism 1 and the U-shaped steel pipe and is in a standby state. The moving end of the linear motor 9 moves toward the first landing point 22. The top plate 742 with the contact tube block 743 and the bearing tube block 5 clamp one end of the U-shaped steel pipe together, so they can carry the U-shaped steel pipe toward the first landing point 22 and move a distance, so that the U-shaped bending part of the U-shaped steel pipe can be away from the bending mechanism 1.

[0050] Reference Figure 4 and Figure 5 Then, the middle moving cylinder 73 extends the output end to move the top plate 742 upward, and a gap is formed between the contact tube block 743 and the U-shaped steel pipe. At the same time, the side bearing block 82 moves upward and is in a high position with the tube bearing block 5 to receive the other end of the U-shaped steel pipe. Then, the reversing motor 741 rotates the output end to move the end of the top plate 742 with the contact tube block 743 to the side of the contact tube block 743. At this time, the U-shaped steel pipe can be separated from the tube bearing block 5 from above the tube bearing channel 51. Finally, after the bottom bearing cylinder 4 extends the output end, the side bearing block 82 and the tube bearing block 5 can simultaneously lift the U-shaped steel pipe and move it to the top of the bending mechanism 1 to complete the automatic disassembly of the U-shaped steel pipe on the bending mechanism 1.

[0051] The implementation principle of a pipe bending device in the embodiment of the present application is as follows: when the moving end of the arc motor 2 is located at the first landing point 22, the pipe bearing block 5 receives the straight steel pipe in the horizontal direction through the pipe bearing channel 51 and the bending mechanism 1. The output end of the middle displacement cylinder 73 is in a contracted state, and the top plate 742 presses the straight steel pipe in the pipe bearing channel 51 through the pipe contact block 743, thereby ensuring the position stability of the straight steel pipe on the pipe bearing block 5. The side bearing block 82 is located below the pipe bearing block 5 and is in a standby state.

[0052] When the bending mechanism 1 bends the steel pipe into a U-shaped steel pipe, the moving end of the arc motor 2 synchronously moves from the first landing point 22 to the second landing point 23, and the pipe-bearing block 5 and the top plate 742 with the contact pipe block 743 jointly support and limit the end of the straight steel pipe away from the bending mechanism 1, thereby ensuring that the straight steel pipe can be stably bent into a U-shaped steel pipe.

[0053] When the moving end of the arc motor 2 reaches the second landing point 23, the side bearing block 82 is located between the bending mechanism 1 and the U-shaped steel pipe and is in a standby state. The moving end of the linear motor 9 moves toward the first landing point 22. The top plate 742 with the contact tube block 743 and the tube bearing block 5 clamp one end of the U-shaped steel pipe together, so they can carry the U-shaped steel pipe toward the first landing point 22 and move a distance, so that the U-shaped bending part of the U-shaped steel pipe can be away from the bending mechanism 1.

[0054] Next, the middle cylinder 73 extends the output end to move the top plate 742 upward, creating a gap between the tube contact block 743 and the U-shaped steel pipe. At the same time, the side bearing block 82 moves upward and is in a high position with the tube bearing block 5 to receive the other end of the U-shaped steel pipe. Next, the reversing motor 741 rotates the output end to move the end of the top plate 742 with the tube contact block 743 to the side of the tube contact block 743. At this time, the U-shaped steel pipe can be detached from the tube bearing block 5 from above the tube bearing channel 51. Finally, after the bottom bearing cylinder 4 extends the output end, the side bearing block 82 and the tube bearing block 5 can simultaneously lift the U-shaped steel pipe and move it to the top of the bending mechanism 1 to complete the automated disassembly of the U-shaped steel pipe on the bending mechanism 1. This process reduces the manual operation of operators when the bending mechanism 1 bends the straight steel pipe into a U-shaped steel pipe, realizes the automatic acceptance of the straight steel pipe and the auxiliary bending of the straight steel pipe into the U-shaped steel pipe, and can automatically push the U-shaped steel pipe away from the bending mechanism 1 and lift it upward, further reducing the degree of manual intervention and ensuring the uniformity of quality when the bending mechanism 1 bends the straight steel pipe into the U-shaped steel pipe.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pipe bending device, comprising a bending mechanism (1) for bending a straight steel pipe into a U-shaped steel pipe, characterized in that: include: The arc motor (2) is arranged on one side of the bending mechanism (1); the track of the arc motor (2) is an arc track (21) extending along the trajectory of the bending mechanism (1) bending the straight steel pipe into a U-shaped steel pipe; when the moving end of the arc motor (2) is at one end of the arc track (21), it is at a first landing point (22), at which time the moving end of the arc motor (2) is below the end of the straight steel pipe away from the bending mechanism (1); when the moving end of the arc motor (2) is at the other end of the arc track (21), it is at a second landing point (23), at which time the moving end of the arc motor (2) is below the end of the U-shaped steel pipe after bending; when the bending mechanism (1) bends the straight steel pipe into a U-shaped steel pipe, the moving end of the arc motor (2) can be synchronously moved from the first landing point (22) to the second landing point (23); The pipe-bearing mechanism (3) is arranged on the moving end of the arc motor (2); when the moving end of the arc motor (2) is at the first landing point (22), the pipe-bearing mechanism (3) can bear the end of the straight steel pipe away from the bending mechanism (1); after the moving end of the arc motor (2) moves from the first landing point (22) to the second landing point (23), the pipe-bearing mechanism (3) can first move to the bottom of the U-shaped steel pipe, and then simultaneously support the two parallel ends of the U-shaped steel pipe after bending; A linear motor (9), wherein the linear motor (9) is arranged between the moving end of the arc motor (2) and the supporting mechanism (3), and is used to support the supporting mechanism (3), and is capable of carrying the supporting mechanism (3) and the U-shaped steel pipe away from the bending mechanism (1) when the moving end of the arc motor (2) is located at the second landing point (23).

2. The pipe bending device according to claim 1, characterized in that: The management institution (3) comprises: A bottom bearing cylinder (4) is arranged on the moving end of the linear motor (9), and a middle bearing assembly (6) is arranged on the output end of the bottom bearing cylinder (4); A pipe bearing block (5) is arranged on the middle bearing assembly (6); a pipe bearing channel (51) for placing a straight steel pipe or a U-shaped steel pipe is provided through the top wall of the pipe bearing block (5); A middle shift assembly (7) is arranged between the pipe bearing block (5) and the middle bearing assembly (6), and is capable of moving along the height direction of the pipe bearing block (5) and positioning the straight steel pipe or the U-shaped steel pipe in the pipe bearing channel (51); The side bearing assembly (8) is arranged on the middle bearing assembly (6); wherein: When the moving end of the arc motor (2) is located at the first landing point (22), the side bearing assembly (8) is located below the bearing tube channel (51); after the moving end of the arc motor (2) moves to the second landing point (23), one end of the U-shaped steel pipe is located inside the side wall of the bearing tube channel (51), and the middle shift assembly (7) can carry the side bearing assembly (8) to move upward, so that the side bearing assembly (8) receives the other end of the U-shaped steel pipe; and the moving end of the linear motor (9) can move toward the first landing point (22), and the output end of the bottom bearing cylinder (4) can extend outward, so that the bottom bearing cylinder (4) lifts the U-shaped steel pipe to above the bending mechanism (1).

3. The pipe bending device according to claim 2, characterized in that: The middle bearing assembly (6) comprises a support plate (61) arranged on the output end of the bottom bearing cylinder (4), a support column (62) arranged on the support plate (61) for mounting the bearing block (5), and a sliding sleeve (63) slidably connected to the support column (62); The center shift assembly (7) and the side bearing assembly (8) are respectively located on opposite sides of the support block (5), and the side bearing assembly (8) can follow the center shift assembly (7) and move synchronously along the height direction of the support block (5).

4. The pipe bending device according to claim 3, characterized in that: The intermediate shift component (7) comprises: A guide column (71) is arranged on the side wall of the pipe-bearing block (5), and the guide column (71) extends along the height direction of the pipe-bearing block (5); A movable sleeve (72) adapted to fit on the guide post (71) and capable of moving along the height direction of the guide post (71); A central displacement cylinder (73) is fixed on the side wall of the movable sleeve (72), and the central displacement cylinder (73) is fixedly connected to the sliding sleeve (63), and an output end of the central displacement cylinder (73) is fixedly connected to the top wall of the support plate (61); The pipe-pushing unit (74) is arranged on the middle-shifting cylinder (73); after the output end of the middle-shifting cylinder (73) is retracted, the straight steel pipe or the U-shaped steel pipe can be pressed tightly into the pipe-bearing channel (51); after the output end of the middle-shifting cylinder (73) is extended, the straight steel pipe or the U-shaped steel pipe can be detached from the straight steel pipe or the U-shaped steel pipe and away from the pipe-bearing block (5).

5. The pipe bending device according to claim 4, characterized in that: The pipe support unit (74) comprises: A reversing motor (741) is arranged on the middle shifting cylinder (73); A top plate (742) is arranged on the output end of the reversing motor (741), and a contact tube block (743) is provided on the bottom wall of the top plate (742); after the output end of the middle-moving cylinder (73) is extended outward, the reversing motor (741) can rotate the output end so that the end of the top plate (742) with the contact tube block (743) is close to or away from the supporting tube channel (51); after the output end of the middle-moving cylinder (73) is retracted, the end of the top plate (742) with the contact tube block (743) can press the straight steel pipe or U-shaped steel pipe into the supporting tube channel (51), or the top plate (742) is located on one side of the supporting tube block (5).

6. The pipe bending device according to claim 5, characterized in that: The edge bearing assembly (8) comprises: An extension frame (81), one end of the extension frame (81) being connected to the sliding sleeve (63); A side bearing block (82) is arranged at the other end of the extension frame (81); a preset channel (821) is provided through the side bearing block (82) for placing one end of the U-shaped steel pipe; The pipe-supporting unit (74) further comprises a connecting plate (744), wherein the connecting plate (744) is arranged between the reversing motor (741) and the sliding sleeve (63); when the reversing motor (741) moves, the top plate (742), the sliding sleeve (63), the extension frame (81), and the side bearing block (82) can move synchronously.

7. The pipe bending device according to claim 6, characterized in that: The extension frame (81) comprises a vertical plate (811) extending in the vertical direction, and a first horizontal plate (812) and a second horizontal plate (813) located at two ends of the vertical plate (811) in the height direction and located on two opposite sides of the vertical plate (811); the first horizontal plate (812) is located below the second horizontal plate (813), one end of the first horizontal plate (812) away from the vertical plate (811) is connected to the sliding sleeve (63), and one end of the second horizontal plate (813) away from the vertical plate (811) is connected to the side bearing block (82).

8. The pipe bending device according to claim 7, characterized in that: When the output end of the bottom bearing cylinder (4) and the output end of the middle displacement cylinder (73) are contracted, the second transverse plate (813) and the side bearing block (82) are both located between the bending mechanism (1) and the straight steel pipe or the U-shaped steel pipe.

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