Steel pipe bending device

Abstract

The present invention discloses a steel pipe bending device, which includes a base, a bending seat, two bending rollers and a driving mechanism. The bending seat is fixed on a side wall of the base, and both ends of the bending seat have a bending head, and the bending head is a semicircular arc structure. The bending seat is used to place the steel pipe to be bent; the two bending rollers are respectively arranged directly above the corresponding bending heads and respectively abut against the side walls of the two ends of the steel pipe to be bent; the driving mechanism is connected to the two bending rollers and is used to drive the two bending rollers to reciprocate half a circle in opposite directions around the corresponding bending heads. The beneficial effect of the present invention is that the two ends of the steel pipe can be bent synchronously, and a semicircular bent pipe structure can be formed at both ends of the steel pipe at one time, which not only improves the bending efficiency but also improves the bending accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe processing equipment, in particular to a steel pipe bending device. Background Art

[0002] Steel pipes are not only used to transport fluids and powdered solids, exchange heat, and manufacture mechanical parts and containers, but they are also an economical steel material. Using steel pipes to manufacture building structural grids, pillars, and mechanical supports can reduce weight, saving 20-40% of metal and enabling factory-based, mechanized construction. Using steel pipes to manufacture highway bridges not only saves steel and simplifies construction, but also significantly reduces the area required for protective coatings, saving investment and maintenance costs.

[0003] In mechanical manufacturing, steel pipes need to be bent in many cases. The elbows formed by bending steel pipes are not only faster in processing speed than those connected by finished elbows, but also can reduce the number of joints and prevent leakage. The existing steel pipe bending device (such as a steel pipe bending device disclosed in application No. 202020078823.7) can only perform a one-way single bend on one end of the steel pipe at a time, and cannot bend both ends of the steel pipe into a semicircular bend structure at one time. If it is necessary to bend both ends of the steel pipe into a semicircular bend structure, multiple bendings are required, resulting in low bending efficiency and poor bending accuracy. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and propose a steel pipe bending device to solve the technical problems that the steel pipe bending device in the prior art can only perform a one-way single bend on one end of the steel pipe at a time, and cannot bend both ends of the steel pipe into a semicircular bent pipe structure at one time. If it is necessary to bend both ends of the steel pipe into a semicircular bent pipe structure, multiple bendings are required, resulting in low bending efficiency and poor bending accuracy.

[0005] In order to achieve the above technical objectives, the technical solution of the present invention provides a steel pipe bending device, comprising:

[0006] base;

[0007] A bending seat, the bending seat is fixed on a side wall of the base, and both ends of the bending seat have a bending head, the bending head is a semicircular arc structure, and the bending seat is used to place the steel pipe to be bent;

[0008] Two bending rollers, the two bending rollers are respectively arranged directly above the corresponding bending heads and respectively abut against the side walls of both ends of the steel pipe to be bent;

[0009] A driving mechanism is connected to both of the two bending rollers and is used to drive the two bending rollers to rotate back and forth half a circle in opposite directions around the corresponding bending heads.

[0010] Furthermore, the base includes a mounting seat, a mounting plate, several support rods and a support plate, the mounting plate is fixed on one side wall of the mounting seat, the bottom of each support rod is fixed on the mounting seat, the support plate is fixed on the top of each support rod, the bending seat is fixed on the other side wall of the mounting seat, and the bending seat and the mounting plate are respectively located on two opposite sides of the mounting seat.

[0011] Furthermore, the mounting base has a cavity therein, and the top of the mounting base has two symmetrical outlets connected to the cavity.

[0012] Furthermore, two through grooves connected to the cavity are opened on the side wall of the mounting seat, and the through grooves and the bending seat are located on the same side wall of the mounting seat. The two through grooves are semi-annular structures and are symmetrical to each other. The center of the through groove coincides with the center of the corresponding bending head.

[0013] Furthermore, the mounting seat is symmetrically provided with two first through holes penetrating the mounting seat, both of the two first through holes are connected to the cavity, and the two first through holes are respectively located between the bending head and the through groove.

[0014] Furthermore, the steel pipe bending device also includes a limiting mechanism, which is used to limit the steel pipe to be bent placed on the bending seat.

[0015] Furthermore, the limiting mechanism includes a limiting seat and several springs. The limiting seat is slidably connected to the side wall of the mounting seat. The bottom of the limiting seat has a slot, which is used to clamp the steel pipe to be bent. One end of each spring is fixedly connected to the top of the limiting seat.

[0016] Furthermore, the driving mechanism includes two gears, two fixed shafts, two gear rods, a first connecting plate and a first telescopic driving member. The two gears are arranged in the cavity and are rotatably connected to the mounting seat. The centers of the two gears coincide with the centers of the corresponding bending heads respectively. One end of the two fixed shafts is fixed to the corresponding gears respectively, and the fixed shafts are not coaxial with the gears. The other ends of the two fixed shafts slide through the corresponding through slots respectively and extend to the outside of the mounting seat. The two bending rollers are fixedly sleeved on the corresponding fixed shafts respectively. The two gear rods are both arranged in the cavity, and the upper ends of the two gear rods pass through the corresponding outlets respectively and extend to the outside of the mounting seat. The gear rods are provided with teeth and engage with the corresponding gears through the corresponding teeth. The first connecting plate is slidably sleeved on each of the support rods, and the bottom of the first connecting plate is fixedly connected to the tops of the two gear rods and the other end of each of the springs. The first telescopic driving member is fixed on the support plate, and the output end of the first telescopic driving member is fixedly connected to the first connecting plate for driving the first connecting plate to move up and down.

[0017] Furthermore, a second through hole is provided on the gear, the distance between the second through hole and the center of the gear is smaller than the distance between the fixed axis and the center of the gear, the diameter of the second through hole is equal to that of the first through hole, and when the bending roller is located directly above the bending head, the second through hole coincides with the first through hole.

[0018] Furthermore, the steel pipe bending device also includes an ejection mechanism, which is used to eject the bent steel pipe from the bending seat. The ejection mechanism includes a second connecting plate, two ejection shafts and a second telescopic drive member. The second connecting plate is slidably arranged on the mounting plate, and one end of the two ejection shafts is fixed to the second connecting plate. The two ejection shafts are respectively coaxial with the corresponding first through holes, and the diameter of the ejection shaft is less than or equal to the diameter of the first through hole.

[0019] Compared with the prior art, the beneficial effects of the present invention include: when it is necessary to bend the two ends of the steel pipe and bend the two ends of the steel pipe into a semicircular bend, first, place the steel pipe on the bending seat, and make the side walls of the two ends of the steel pipe respectively abut against the bending rollers, and by manipulating the driving mechanism, the driving mechanism can drive the two bending rollers to rotate half a circle in opposite directions around the corresponding bending heads, so that the two ends of the steel pipe can be bent into a semicircular bend, and then by manipulating the driving mechanism, the driving mechanism can drive the two bending rollers to rotate back half a circle in opposite directions around the corresponding bending heads, so that the two bending rollers can be reset and prepare for the next bending of the steel pipe. The steel pipe bending device provided in the present invention can perform synchronous bending on the two ends of the steel pipe, and can bend a semicircular bend structure at both ends of the steel pipe at one time, which not only improves the bending efficiency, but also improves the bending accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a steel pipe bending device provided by the present invention;

[0021] Figure 2 yes Figure 1 A cross-sectional view of a steel pipe bending device;

[0022] Figure 3 hour Figure 2 A cross-sectional view of a steel pipe bending device omitting the limiting mechanism and the steel pipe to be bent;

[0023] Figure 4 yes Figure 2 A cross-sectional view of a steel pipe bending device after the bending roller rotates 90°;

[0024] Figure 5 yes Figure 2 A cross-sectional view of a steel pipe bending device after the bending roller rotates 180°;

[0025] Figure 6 yes Figure 2 A cross-sectional view of a steel pipe bending device when the ejector shaft ejects the steel pipe;

[0026] In the figure: 100-base, 110-mounting seat, 111-cavity, 112-outlet, 113-through groove, 114-first through hole, 120-mounting plate, 130-support rod, 140-support plate, 200-bending seat, 210-bending head, 300-bending roller, 400-driving mechanism, 410-gear, 411-second through hole, 420-fixed shaft, 430-gear rod, 440-first connecting plate, 450-first telescopic driving member, 500-limiting mechanism, 510-limiting seat, 511-slot, 520-spring, 600-ejection mechanism, 610-second connecting plate, 620-ejection shaft, 630-second telescopic driving member. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The present invention provides a steel pipe bending device, the structure of which is as follows Figure 1 and Figure 2 As shown, it includes a base 100, a bending seat 200, two bending rollers 300 and a driving mechanism 400. The bending seat 200 is fixed on a side wall of the base 100. Both ends of the bending seat 200 have a bending head 210. The bending head 210 is a semicircular arc structure. The bending seat 200 is used to place the steel pipe to be bent; the two bending rollers 300 are respectively arranged directly above the corresponding bending heads 210, and respectively abut against the side walls of the two ends of the steel pipe to be bent; the driving mechanism 400 is connected to the two bending rollers 300, and is used to drive the two bending rollers 300 to rotate back and forth half a circle in opposite directions around the corresponding bending heads 210.

[0029] When it is necessary to bend the two ends of the steel pipe and bend the two ends of the steel pipe into a semicircular bend, first, the steel pipe is placed on the bending seat 200, and the side walls of the two ends of the steel pipe are respectively in contact with the bending rollers 300. By manipulating the driving mechanism 400, the driving mechanism 400 can drive the two bending rollers 300 to rotate half a circle in opposite directions around the corresponding bending heads 210, so that the two ends of the steel pipe can be bent into a semicircular bend. Then, by manipulating the driving mechanism 400, the driving mechanism 400 can drive the two bending rollers 300 to rotate back half a circle in opposite directions around the corresponding bending heads 210, so that the two bending rollers 300 can be reset and prepare for the next bending of the steel pipe. The steel pipe bending device provided in the present invention can perform synchronous bending on the two ends of the steel pipe, and can bend a semicircular bend structure at both ends of the steel pipe at one time, which not only improves the bending efficiency, but also improves the bending accuracy.

[0030] As a preferred embodiment, please refer to Figure 2 The base 100 includes a mounting seat 110, a mounting plate 120, a plurality of support rods 130 and a support plate 140. The mounting plate 120 is fixed to a side wall of the mounting seat 110. The mounting plate 120 is used to set the ejection mechanism 600. The bottom of each support rod 130 is fixed to the mounting seat 110. The support plate 140 is fixed to the top of each support rod 130. The bending seat 200 is fixed to the other side wall of the mounting seat 110, and the bending seat 200 and the mounting plate 120 are respectively located on two opposite sides of the mounting seat 110, so that the ejection mechanism 600 can eject the bent steel pipe from the bending seat 200.

[0031] As a preferred embodiment, please refer to Figure 3 The mounting base 110 has a cavity 111 therein, for arranging the two gears 410 and the two gear rods 430 in the cavity 111. The top of the mounting base 110 has two symmetrical outlets 112 connected to the cavity 111, for allowing the upper ends of the two gear rods 430 to extend from the corresponding outlets 112 respectively.

[0032] As a preferred embodiment, please refer to Figure 3Two through slots 113 communicating with the cavity 111 are provided on the side wall of the mounting seat 110. The through slots 113 and the bending seat 200 are located on the same side wall of the mounting seat 110. The two through slots 113 are both semi-annular structures and are symmetrical to each other. The center of the through slots 113 coincides with the center of the corresponding bending head 210, so that the other ends of the two fixed shafts 420 slide through the corresponding through slots 113 respectively and can rotate along the through slots 113, thereby driving the bending roller 300 fixed on the fixed shaft 420 to rotate half a circle around the corresponding bending head 210.

[0033] As a preferred embodiment, please refer to Figure 3 The mounting seat 110 is further symmetrically provided with two first through holes 114 that penetrate the mounting seat 110. Both of the two first through holes 114 are connected to the cavity 111. The two first through holes 114 are respectively located between the bending head 210 and the through groove 113. The two first through holes 114 are respectively located on the extension line of the central axis of the bending seat 200. When the bending roller 300 is located directly above the bending head 210, it is convenient for the two ejection shafts 620 to pass through the corresponding first through holes 114 and the second through holes 411, respectively, and eject the bent steel pipe from the bending seat 200.

[0034] As a preferred embodiment, please refer to Figure 1 The steel pipe bending device also includes a limiting mechanism 500, which is used to limit the steel pipe to be bent placed on the bending seat 200 to prevent the steel pipe to be bent from moving horizontally and bending and deforming in the vertical direction.

[0035] As a preferred embodiment, please refer to Figure 4 The limit mechanism 500 includes a limit seat 510 and a plurality of springs 520. The limit seat 510 is slidably connected to the side wall of the mounting seat 110. The bottom of the limit seat 510 has a clamping groove 511, and the clamping groove 511 is used to clamp the steel pipe to be bent. When the bending roller 300 is located directly above the bending head 210, the distance between the bottom of the limit seat 510 and the bending seat 200 is equal to or slightly larger than the diameter of the steel pipe, so that the steel pipe is clamped by the clamping groove 511 at the beginning of the bending without affecting the bending. After the bending is completed, the ejection shaft 620 ejects the steel pipe from the bending seat 200 to prevent the middle part of the steel pipe from bending upward due to force during the bending of the two ends of the steel pipe by the bending roller 300. At the same time, it also prevents the steel pipe from moving horizontally, which leads to poor bending accuracy. One end of each spring 520 is fixedly connected to the top of the limit seat 510.

[0036] As a preferred embodiment, please refer to Figure 4 and Figure 5 The driving mechanism 400 includes two gears 410, two fixed shafts 420, two gear rods 430, a first connecting plate 440 and a first telescopic driving member 450. The two gears 410 are both arranged in the cavity 111 and are rotatably connected to the mounting seat 110. The centers of the two gears 410 coincide with the centers of the corresponding bending heads 210. One end of the two fixed shafts 420 is fixed to the corresponding gears 410, and the fixed shafts 420 are not coaxial with the gears 410. The other ends of the two fixed shafts 420 slide through the corresponding The through slot 113 extends to the outside of the mounting seat 110, the two bending rollers 300 are respectively fixedly sleeved on the corresponding fixed shafts 420, the two gear rods 430 are both arranged in the cavity 111 and are slidably connected to the mounting seat 110, the upper ends of the two gear rods 430 pass through the corresponding outlets 112 respectively and extend to the outside of the mounting seat 110, the gear rods 430 are provided with teeth, and are engaged with the corresponding gears 410 through the corresponding teeth, the first connecting plate 440 is slidably sleeved on each of the support rods 130, the first The bottom of the connecting plate 440 is fixedly connected to the top of the two gear rods 430 and the other end of each spring 520. The first telescopic driving member 450 is fixed on the support plate 140. The output end of the first telescopic driving member 450 is fixedly connected to the first connecting plate 440 for driving the first connecting plate 440 to move up and down. When the two ends of the steel pipe need to be bent, the first telescopic driving member 450 can be manipulated to drive the first connecting plate 440 to move downward, and drive the two gear rods 430 and the limit seat 510 to move upward. The steel pipe moves downward, and since the distance between the bottom of the limiting seat 510 and the bending seat 200 is equal to or slightly larger than the diameter of the steel pipe, the steel pipe is clamped by the clamping groove 511 opened at the bottom of the limiting seat 510 at the beginning of the bending, and the two gear rods 430 drive the two gears 410 to rotate in the opposite direction, thereby driving the two fixed shafts 420 to rotate in the opposite direction, and the two fixed shafts 420 slide in the corresponding through grooves 113, and drive the bending rollers 300 to rotate in the opposite direction through the fixed shafts 420, thereby completing the bending of the steel pipe, and bending the two ends of the steel pipe into a semicircular bent pipe structure.

[0037] As a preferred embodiment, please refer to Figure 3A second through hole 411 is provided on the gear 410. The distance between the second through hole 411 and the center of the gear 410 is smaller than the distance between the fixed shaft 420 and the center of the gear 410. The diameter of the second through hole 411 is equal to that of the first through hole 114. When the bending roller 300 is located directly above the bending head 210, the second through hole 411 coincides with the first through hole 114, making it easier for the ejection shaft 620 to extend from the first through hole 114 and the second through hole 411, and eject the bent steel pipe from the bending seat 200.

[0038] As a preferred embodiment, please refer to Figure 2 and Figure 3 , the steel pipe bending device also includes an ejection mechanism 600, which is used to eject the bent steel pipe from the bending seat 200, and the ejection mechanism 600 includes a second connecting plate 610, two ejection shafts 620 and a second telescopic driving member 630, the second connecting plate 610 is slidably arranged on the mounting plate 120, one end of the two ejection shafts 620 are fixed on the second connecting plate 610, the two ejection shafts 620 are respectively coaxial with the corresponding first through holes 114, and the diameter of the ejection shaft 620 is less than or equal to the diameter of the first through hole 114. When the steel pipe is bent, by manipulating the first telescopic driving member 450, the first telescopic driving member 450 can drive the first connecting plate 440 to move upward, and drive the two gear rods 430 and the limit seat 510 to move upward, and the two gear rods 430 drive the two gears 410 to rotate in the opposite direction and back. The two fixed shafts 420 are thereby driven to rotate in opposite directions and back, and the two fixed shafts 420 slide in the corresponding through grooves 113, and the bending rollers 300 are driven to rotate back in opposite directions half a circle by the fixed shafts 420, so that the two bending rollers 300 can be reset and prepare for the bending of the next steel pipe. At this time, the bending rollers 300 are located directly above the bending head 210, and the second through hole 411 coincides with the first through hole 114. The distance between the bottom of the limit seat 510 and the bending seat 200 is equal to or slightly larger than the diameter of the steel pipe. The slot 511 releases the steel pipe, and by manipulating the second telescopic driving member 630, the second telescopic driving member 630 drives the second connecting plate 610 to slide on the mounting plate 120, and drives the two ejection shafts 620 to extend from the first through hole 114 and the second through hole 411, and ejects the bent steel pipe from the bending seat 200.

[0039] In order to better understand the present invention, the following Figures 1-6 The working principle of the technical solution of the present invention is described in detail:

[0040] When it is necessary to bend the two ends of the steel pipe and bend the two ends of the steel pipe into a semicircular bend, first, place the steel pipe on the bending seat 200, and make the side walls of the two ends of the steel pipe respectively abut against the bending rollers 300, and by manipulating the first telescopic driving member 450, the first telescopic driving member 450 can drive the first connecting plate 440 to move downward, and drive the two gear rods 430 and the limiting seat 510 to move downward. Since the distance between the bottom of the limiting seat 510 and the bending seat 200 is equal to or slightly larger than the diameter of the steel pipe, the steel pipe is limited by the limiting seat at the beginning of the bending. The slot 511 opened at the bottom of the seat 510 is clamped, and the two gear rods 430 drive the two gears 410 to rotate in opposite directions, thereby driving the two fixed shafts 420 to rotate in opposite directions. The two fixed shafts 420 slide in the corresponding through grooves 113 and drive the bending rollers 300 to rotate in opposite directions through the fixed shafts 420, thereby completing the bending of the steel pipe, and bending the two ends of the steel pipe into a semicircular curved pipe structure respectively. When the steel pipe is bent, by manipulating the first telescopic driving member 450, the first telescopic driving member 450 can drive the first connecting plate 440 to move upward. The two gear rods 430 and the limit seat 510 move upward, and the two gear rods 430 drive the two gears 410 to rotate in the opposite direction and back, thereby driving the two fixed shafts 420 to rotate in the opposite direction and back, and the two fixed shafts 420 slide in the corresponding through grooves 113, and drive the bending rollers 300 to rotate back half a circle in the opposite direction through the fixed shafts 420, so that the two bending rollers 300 can be reset and prepare for the next bending of the steel pipe. At this time, the bending rollers 300 are located directly above the bending head 210, and the second through hole 411 is aligned with the first through hole. The holes 114 overlap, the slot 511 releases the steel pipe, and the second telescopic driving member 630 is manipulated to drive the second connecting plate 610 to slide on the mounting plate 120, and drive the two ejection shafts 620 to extend from the first through hole 114 and the second through hole 411, and eject the bent steel pipe from the bending seat 200. The steel pipe bending device provided in the present invention can bend both ends of the steel pipe synchronously, and can bend a semicircular bent pipe structure at both ends of the steel pipe at one time, which not only improves the bending efficiency, but also improves the bending accuracy.

[0041] The steel pipe bending device provided by the present invention has the following beneficial effects:

[0042] (1) The distance between the bottom of the limiting seat 510 and the bending seat 200 is equal to or slightly larger than the diameter of the steel pipe, so that the steel pipe is clamped by the clamping groove 511 at the beginning of bending without affecting the completion of bending. It can also prevent the middle part of the steel pipe from bending upward due to force when the two ends of the steel pipe are bent by the bending roller 300, and also prevent the steel pipe from moving horizontally, which would lead to poor bending accuracy.

[0043] (2) The ejection mechanism 600 is set. When the steel pipe is bent, the bending roller 300 is located directly above the bending head 210, the second through hole 411 coincides with the first through hole 114, and the clamping slot 511 releases the steel pipe. By manipulating the second telescopic driving member 630, the second telescopic driving member 630 drives the second connecting plate 610 to slide on the mounting plate 120, and drives the two ejection shafts 620 to extend from the first through hole 114 and the second through hole 411, and ejects the bent steel pipe from the bending seat 200.

[0044] (3) The two ends of the steel pipe can be bent synchronously, and a semicircular bent pipe structure can be formed at both ends of the steel pipe at one time, which not only improves the bending efficiency but also improves the bending accuracy.

[0045] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A steel pipe bending device, characterized in that: include: A base, a bending seat, wherein the bending seat is fixed on a side wall of the base, and both ends of the bending seat have a bending head, and the bending head is a semicircular arc structure, and the bending seat is used to place the steel pipe to be bent; The top of the mounting plate is symmetrically provided with two outlets connected to the mounting plate, and the top of the mounting plate and the bottom of the mounting plate are parallel to each other, and the mounting plate has two openings connected thereto. The top of the mounting plate has two symmetrical openings, and the top of the mounting plate is symmetrically provided with two outlets connected to the mounting plate. The side wall of the mounting plate is provided with two through-holes connected to the cavity. The through-hole and the bending seat are located on the same side wall of the mounting seat. The two through-holes are semi-annular structures and are symmetrical with each other. The center of the through-hole coincides with the center of the corresponding bending head. The mounting seat is also symmetrically provided with two first through-holes that pass through the mounting seat, the two first through-holes are connected to the cavity, and the two first through-holes are respectively located between the bending head and the through-hole; Two bending rollers, the two bending rollers are respectively arranged directly above the corresponding bending heads and respectively abut against the side walls of both ends of the steel pipe to be bent; A driving mechanism, the driving mechanism being connected to both of the bending rollers and configured to drive the two bending rollers to rotate back and forth half a circle in opposite directions around the corresponding bending head; The driving mechanism includes two gears, two fixed shafts, two gear rods, a first connecting plate and a first telescopic driving member. The two gears are arranged in the cavity and are rotatably connected to the mounting seat. The centers of the two gears coincide with the centers of the corresponding bending heads respectively. One end of the two fixed shafts is fixed to the corresponding gears respectively, and the fixed shafts are not coaxial with the gears. The other ends of the two fixed shafts slide through the corresponding through slots respectively and extend to the outside of the mounting seat. The two bending rollers are fixedly sleeved on the corresponding fixed shafts respectively. The two gear rods are arranged in the cavity. The upper ends of the two gear rods pass through the corresponding outlets respectively and extend to the outside of the mounting seat. The gear rods are provided with teeth and mesh with the corresponding gears through the corresponding teeth. The first connecting plate is slidably sleeved on each of the support rods. The bottom of the first connecting plate is fixedly connected to the tops of the two gear rods. The first telescopic driving member is fixed to the support plate. The output end of the first telescopic driving member is fixedly connected to the first connecting plate, so as to drive the first connecting plate to move up and down. A second through hole is formed on the gear, the distance between the second through hole and the center of the gear is smaller than the distance between the fixed axis and the center of the gear, the second through hole has the same diameter as the first through hole, and when the bending roller is located directly above the bending head, the second through hole coincides with the first through hole; An ejection mechanism is used to eject the bent steel pipe from the bending seat. The ejection mechanism includes a second connecting plate, two ejection shafts and a second telescopic drive member. The second connecting plate is slidably arranged on the mounting plate. One end of the two ejection shafts is fixed to the second connecting plate. The two ejection shafts are respectively coaxial with the corresponding first through holes, and the diameter of the ejection shaft is less than or equal to the diameter of the first through hole.

2. The steel pipe bending device according to claim 1, characterized in that: It also includes a limiting mechanism, which is used to limit the steel pipe to be bent placed on the bending seat.

3. The steel pipe bending device according to claim 2, characterized in that: The limiting mechanism includes a limiting seat and several springs. The limiting seat is slidably connected to the side wall of the mounting seat. The bottom of the limiting seat has a slot for clamping the steel pipe to be bent. One end of each spring is fixedly connected to the top of the limiting seat.

4. The steel pipe bending device according to claim 3, characterized in that: The bottom of the first connecting plate is fixedly connected to the other end of each of the springs.

Images