Steel bar arc bending machine

Abstract

The utility model relates to a steel bar arc bending machine which comprises an arc bending device. The feeding device comprises a horizontal conveying mechanism and a lifting mechanism connected between the horizontal conveying mechanism and the arc bending device. The lifting mechanism comprises a fixing frame, a movable plate assembly movably installed on the fixing frame, a transmission assembly controlling lifting and descending of the movable plate assembly, an inclined rail assembly limiting inclined lifting of the movable plate assembly and connected to the fixing frame, and a driving piece driving the transmission assembly to rotate. And the discharging device comprises side conveying belt assemblies used for removing the bent steel bars from the operation platform, and the side conveying belt assemblies are installed on the two sides of the arc bending device in a sliding mode. The steel bar bending machine solves the technical problem that in the prior art, straight steel bars need to be manually supplemented and bent steel bars need to be manually taken away through a steel bar bending machine. According to the steel bar bending machine, full automation of steel bar bending is achieved, the labor cost is reduced, and meanwhile the safety risk during manual operation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a steel bar bending machine. Background Art

[0002] The steel bar bending machine is one of the steel bar processing machines. The working mechanism is a horizontal working disc rotating on a vertical axis. The steel bar is placed in the dotted line position in the figure. The supporting pin is fixed on the machine bed. The center pin and the bending pin are installed on the working disc. The steel bar is bent when the disc rotates. Conventional steel bar bending machines mostly require manual addition of straight steel bars and manual removal of bent steel bars, which cannot achieve full automation of steel bar bending. While increasing labor costs, it also increases the safety risks of manual operation. Utility Model Content

[0003] In view of the deficiencies existing in the above-mentioned prior art, the utility model provides a steel bar bending machine, which solves the technical problem that the steel bar bending machine in the prior art needs to manually add straight steel bars and manually remove the bent steel bars.

[0004] In the first aspect, the utility model discloses a steel bar bending machine, comprising:

[0005] The arc bending device comprises an operating platform, a plurality of blocks detachably mounted on the operating platform in an arc shape for controlling the bending angle of the steel bar to be bent, and guide wheels slidably mounted on both sides of the operating platform for applying a bending force to the steel bar to be bent;

[0006] The feeding device comprises a horizontal transport mechanism, a lifting mechanism connected between the horizontal transport mechanism and the arc bending device, the lifting mechanism comprises a fixed frame, a movable plate assembly movably mounted on the fixed frame, a transmission assembly for controlling the lifting and lowering of the movable plate assembly, an inclined rail assembly for limiting the oblique lifting of the movable plate assembly and connected to the fixed frame, and a driving member for driving the transmission assembly to rotate, wherein:

[0007] The fixed frame includes at least two fixed step plates for temporarily placing the steel bar to be bent and fixed at parallel intervals, the movable plate assembly includes at least two movable step plates for taking the steel bar to be bent from the horizontal transport mechanism and lifting it from the lowest step of the fixed step plates to the highest step, at least two of the movable step plates are located between at least two of the fixed step plates and are arranged at parallel intervals, the step inclination direction of the movable step plates is the same as the step inclination direction of the fixed step plates, the direction of the ramp assembly is consistent with the step inclination direction of the fixed step plates, and the highest step of the fixed step plates extends above the operating platform and is inclined toward one side of the operating platform;

[0008] The unloading device comprises a side conveyor belt assembly for removing the bent steel bars from the operating platform, and the side conveyor belt assembly is slidably installed on both sides of the bending device.

[0009] The steel bar bending machine of the utility model is further improved in that the transmission assembly includes a mounting rod for fixing at least two movable step plates, a rotating shaft driven to rotate by the driving member, and an eccentric wheel eccentrically fixed on the rotating shaft and the outer peripheral surface of which contacts the mounting rod; when the protruding section of the eccentric wheel contacts the mounting rod, the height of the movable step plate is higher than the height of the fixed step plate; when the narrowing section of the eccentric wheel contacts the mounting rod, the height of the movable step plate is lower than the height of the fixed step plate.

[0010] The further improvement of the steel bar bending machine of the utility model lies in that the number of the eccentric wheels is at least two, at least two of the eccentric wheels are fixed on the rotating shaft at intervals, the mounting rod is provided with at least two ear plate groups corresponding to the at least two eccentric wheels one by one, and a rotating wheel for contacting the eccentric wheels is rotatably mounted on the ear plate group.

[0011] The steel bar bending machine of the utility model is further improved in that the inclined rail assembly comprises a slide rail fixed on the fixing frame and a slider slidably mounted on the slide rail, and the slider is fixed on the mounting rod.

[0012] The steel bar bending machine of the utility model is further improved in that the horizontal transport mechanism comprises a conveying chain for transporting the steel bar to be bent to the lowest step position of the fixed step plate.

[0013] The steel bar bending machine of the utility model is further improved in that an inclined plate is provided on the top of the fixed step plate for the steel bar to be bent to slide to the operating platform, and at least two longitudinal limit blocks are provided on the operating platform for blocking the steel bar to be bent from sliding down from the inclined plate. The longitudinal limit blocks are installed on the operating platform in a liftable manner, and the lowest height of the longitudinal limit blocks is lower than the height of the operating platform.

[0014] The steel bar bending machine of the utility model is further improved in that two pushing members for aligning the center of the steel bar to be bent with the arc center of multiple blocks are installed on both sides of the operating platform, and the pushing members correspond to the two ends of the steel bar to be bent on the operating platform.

[0015] The steel bar bending machine of the utility model is further improved in that the side conveyor belt assembly includes a side lifting frame, a side guide rail fixed on the side lifting frame, a side slider slidably installed on the side guide rail, and a side conveyor belt installed on the side slider; when the side lifting frame rises to the highest position, the upper surface of the side conveyor belt is higher than the height of the block; when the side lifting frame falls to the lowest position, the upper surface of the side conveyor belt is lower than the height of the operating platform.

[0016] The steel bar bending machine of the utility model is further improved in that a middle conveyor belt assembly is provided in the middle of the operating platform for removing the middle part of the bent steel bar from the operating platform and parallel to the side conveyor belt assembly, the middle conveyor belt assembly includes a middle lifting frame, a middle guide rail fixed on the middle lifting frame, a middle slider slidably mounted on the middle guide rail, and a middle conveyor belt mounted on the middle slider, and a notch is provided on the side of the operating platform away from the feeding device for accommodating the middle guide rail.

[0017] In a second aspect, the utility model also provides a steel bar bending method using the steel bar bending machine as described above, comprising the following steps:

[0018] The horizontal transport mechanism transports the steel bars to be bent toward the lifting mechanism until the steel bars to be bent are close to the lifting mechanism;

[0019] The driving member drives the transmission assembly to rotate, and the transmission assembly controls the movable plate assembly to descend until the lowest step of the movable step plate is located below the steel bar to be bent, and the movable plate assembly is controlled to rise by the transmission assembly until the steel bar to be bent is received from the horizontal transport mechanism;

[0020] The driving member then drives the transmission assembly to rotate, and the transmission assembly controls the movable plate assembly to descend, so that the movable step plate places the steel bar to be bent on the lowest step of the fixed step plate, and the transmission assembly controls the movable plate assembly to lift, so that the movable step plate takes over the steel bar to be bent again, and the transmission assembly controls the movable plate assembly to descend, so that the movable step plate places the steel bar to be bent on the upper step of the fixed step plate, and this is repeated until the steel bar to be bent is lifted to the highest step of the fixed step plate;

[0021] The steel bar to be bent is rolled from the highest step of the fixed step plate to the operating platform, and the guide wheel slides to apply force to both sides of the steel bar to be bent, and multiple blocks block the middle of the steel bar to be bent, so that the steel bar to be bent is bent, and the guide wheel returns to its original position;

[0022] The bent steel bars are removed from the operating platform by a side conveyor assembly.

[0023] Compared with the prior art, the utility model has a positive and obvious effect. The utility model realizes the fully automatic loading and unloading operation of steel bars through the loading device and the unloading device, solving the technical problem that the steel bar bending machine in the prior art needs to manually add straight steel bars and manually remove the bent steel bars. The utility model realizes the full automation of steel bar bending, reduces the labor cost, and also reduces the safety risks during manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the steel bar bending machine of the utility model.

[0026] Figure 2 It is a side view of the steel bar bending machine of the present utility model.

[0027] Figure 3 The utility model is a schematic diagram of the horizontal transport mechanism structure of the steel bar bending machine.

[0028] Figure 4 The lifting mechanism structure of the steel bar bending machine of the utility model is schematically shown in FIG. Figure 1 .

[0029] Figure 5 The lifting mechanism structure of the steel bar bending machine of the utility model is schematically shown in FIG. Figure 2 .

[0030] Figure 6 It is a front view of the lifting mechanism of the steel bar bending machine of the utility model.

[0031] Figure 7 for Figure 6 Section view along line AA.

[0032] Figure 8 It is a schematic structural diagram of the bending device and the feeding device of the steel bar bending machine of the utility model.

[0033] Among them: 1. Arc bending device; 101. Operating platform; 102. Guide wheel; 103. Longitudinal limit block; 104. Push piece; 105. Stop block; 106. Middle lifting frame; 2. Lifting mechanism; 201. Fixed step plate; 202. Movable step plate; 203. Rotating shaft; 204. Eccentric wheel; 205. Driving member; 206. Slide rail; 207. Lifting frame; 208. Inclined plate; 209. Sliding block; 210. Mounting rod; 211. Ear plate group; 3. Horizontal transport mechanism; 301. Conveyor chain; 302. Horizontal transport frame; 4. Unloading device; 401. Side conveyor belt; 402. Side lifting frame; 403. Middle conveyor belt; 404. Middle lifting frame; 5. Collection frame; 6. Distribution box; 7. Steel bars to be bent. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] like Figures 1 to 8 As shown, the utility model provides a steel bar bending machine, comprising: an arc bending device 1, the arc bending device comprises an operating platform 101, a plurality of blocks 105 detachably mounted on the operating platform 101 in an arc shape for controlling the bending angle of the steel bar 7 to be bent, and guide wheels 102 slidably mounted on both sides of the operating platform 101 for applying a bending force to the steel bar 7 to be bent; a feeding device, the feeding device comprises a horizontal transport mechanism 3, a lifting mechanism 2 connected between the horizontal transport mechanism 3 and the arc bending device 1, the lifting mechanism 2 comprises a fixed frame, a movable plate assembly movably mounted on the fixed frame, a transmission assembly for controlling the lifting and lowering of the movable plate assembly, an inclined rail assembly for limiting the oblique lifting of the movable plate assembly and connected to the fixed frame, and a driving member 205 for driving the transmission assembly to rotate, wherein the fixed frame comprises a parallel fixed spacer for temporarily placing the steel bar 7 to be bent At least two fixed step plates 201 are fixed, the movable plate assembly includes at least two movable step plates 202 for taking over the to-be-bent steel bar 7 from the horizontal transport mechanism 3 and lifting it from the lowest step of the fixed step plate 201 to the highest step, at least two of the movable step plates 202 are located between at least two of the fixed step plates 201 and are arranged in parallel and spaced apart, the step inclination direction of the movable step plate 202 is the same as the step inclination direction of the fixed step plate 201, the direction of the ramp assembly is consistent with the step inclination direction of the fixed step plate 201, the highest step of the fixed step plate 201 extends above the operating platform 101 and is inclined toward one side of the operating platform 101; a feeding device 4, the feeding device includes a side conveyor belt assembly for removing the bent steel bar from the operating platform 101, and the side conveyor belt assembly is slidably installed on both sides of the bending device.

[0036] Specifically, Figure 1 and Figure 8As shown, the operating platform 101 is provided with a slide groove for each stopper 105 to slide and adjust the position one by one, and all the slide grooves are opened along the radial direction of the operating platform 101, and the stopper 105 slides in the slide groove to adjust the curvature of the steel bar bending. The operating platform 101 can also be set as a structure of two halves, and the two halves are connected by a telescopic plate. When the distance between the two halves is adjusted, the curvature of the steel bar bending can also be adjusted. A distribution box 6 for powering the entire machine is arranged next to the steel bar bending machine. The utility model transports the steel bar 7 to be bent to the position of the lifting mechanism 2 through the horizontal transportation mechanism 3, and the lifting mechanism 2 lifts the steel bar 7 to be bent to the top of the fixed step plate 201. The steel bar 7 to be bent slides to the operating platform 101 under the action of gravity and is bent by the guide wheel 102. The bent steel bar is transported to the collection rack 5 through the unloading device 4, thereby realizing the automatic loading, bending, unloading and collection of steel bars, realizing the automatic operation of steel bar bending, saving labor costs, and reducing the safety risks of manual operation.

[0037] Preferably, Figure 4 to Figure 7 As shown, the transmission assembly includes a mounting rod 210 for fixing at least two movable step plates 202, a rotating shaft 203 driven by the driving member 205 to rotate, and an eccentric wheel 204 eccentrically fixed on the rotating shaft 203 and with its outer peripheral surface in contact with the mounting rod 210. When the protruding section of the eccentric wheel 204 contacts the mounting rod 210, the height of the movable step plate 202 is higher than the height of the fixed step plate 201, and when the narrowing section of the eccentric wheel 204 contacts the mounting rod 210, the height of the movable step plate 202 is lower than the height of the fixed step plate 201. Specifically, the driving member 205 includes a motor and a clutch. The motor generates power to drive the rotating shaft 203 to rotate, and the clutch combination controls the rotation frequency of the rotating shaft 203. The fixed frame also includes a lifting frame 207 located below the fixed step plate 201. In this embodiment, the number of the fixed step plates 201 is six, and the six fixed step plates 201 are fixed at intervals on the lifting frame 207. The number of the movable step plates 202 is five, and each movable step plate 202 is correspondingly arranged between two adjacent fixed step plates 201. The setting of the eccentric wheel 204 can enable the mounting rod 210 to drive the movable mounting rod 210 to move up and down regularly, and cooperate with the inclined rail assembly to take over and lift the steel bar 7 to be bent on the lower step of the fixed step plate 201 to the upper step of the fixed step plate 201, so as to deliver the steel bar 7 to be bent to the operating platform 101 for the steel bar bending operation.

[0038] Preferably, the number of the eccentric wheels 204 is at least two, and at least two of the eccentric wheels 204 are fixed on the rotating shaft 203 at intervals. The mounting rod 210 is provided with at least two ear plate groups 211 corresponding to the at least two eccentric wheels 204, and a rotating wheel for the eccentric wheels 204 to contact is rotatably mounted on the ear plate group 211. In this embodiment, the number of the eccentric wheels 204 is three, and the three eccentric wheels 204 are fixed on the mounting rod 210 at intervals. The number of the ear plate groups 211 is three, and they correspond to the eccentric wheels 204 one by one. The ear plate group 211 includes two ear plates, a fixing seat, and a rotating wheel. The first ends of the two ear plates are fixed to the fixing seat, and the fixing seat is fixed to the mounting rod 210. The rotating wheel is mounted on the second ends of the two ear plates through a pin shaft, and the two ear plates are provided with openings for the pin shaft to pass through. The eccentric wheel 204 rotates in contact with the rotating wheel, thereby reducing the friction force of the rotation of the eccentric wheel 204.

[0039] Preferably, Figure 5 As shown, the inclined rail assembly includes a slide rail 206 fixed on the fixed frame, and a slider 209 slidably mounted on the slide rail 206, and the slider 209 is fixed on the mounting rod 210. The inclination direction of the slide rail 206 is the same as the inclination direction of the fixed step and the movable step plate 202, thereby providing a guide for the upward lifting of the movable step plate 202, so that the lifting process of the movable step plate 202 has a tendency to lift the steel bar 7 to be bent to the upper step, that is, the lifting process of the movable step plate 202 has a vertical upward displacement, and also has a horizontal displacement to one side of the operating platform 101, rather than just a vertical displacement.

[0040] Preferably, Figure 3 As shown, the horizontal transport mechanism 3 includes a conveying chain 301 for conveying the steel bar 7 to be bent to the lowest step position of the fixed step plate 201. Specifically, the horizontal conveyor includes a horizontal transport frame 302, and at least two conveying groups fixed on the horizontal transport frame 302, each of which includes at least one conveying chain 301. The conveying chain 301 can also be replaced with a conveying belt as needed. In this embodiment, the number of the conveying groups is five, and the five conveying groups are fixed on the horizontal transport frame 302 at intervals, and each conveying group includes two conveying chains 301, the two conveying chains 301 are located on the same axis, and a conveying chain 301 away from the lifting mechanism 2 is located at a position close to the lifting mechanism 2, and an inclined rod is connected between the two conveying chains 301, so that the steel bar 7 to be bent slides from a conveying chain 301 away from the lifting mechanism 2 into a conveying chain 301 close to the lifting mechanism 2, and then further conveying operations are performed. The transmission chain 301 is connected with a transmission shaft through a belt, and the transmission shaft is driven to rotate by a feeding motor. The transmission chain 301 and the transmission belt are finished product transport chains and belts of the prior art.

[0041] Preferably, Figure 1 , Figure 4 and Figure 5 As shown, the top of the fixed step plate 201 is provided with an inclined plate 208 for the steel bar 7 to be bent to slide to the operating platform 101, and the operating platform 101 is provided with at least two longitudinal limit blocks 103 for blocking the steel bar 7 to be bent from sliding down from the inclined plate 208. The longitudinal limit blocks 103 are installed on the operating platform 101 in a liftable manner, and the lowest height of the longitudinal limit blocks 103 is lower than the height of the operating platform 101. Specifically, the operating platform 101 is provided with an opening for the limit block to pass through, so that the longitudinal limit block 103 can be lifted and lowered in the hole, so as to achieve the rise to the height set at the steel bar 7 to be bent before the arc bending operation to block the steel bar 7 to be bent, so as to facilitate the push piece 104 to perform the centering operation on the steel bar, and when performing the arc bending operation, it descends into the hole of the operating platform 101 and avoids the steel bar 7 to be bent.

[0042] Preferably, the Figure 1 and Figure 8 As shown, two pushers 104 for aligning the center of the steel bar 7 to be bent with the arc center of the plurality of stoppers 105 are installed on both sides of the operating platform 101, and the pushers 104 correspond to the two ends of the steel bar 7 to be bent on the operating platform 101. Specifically, an operating frame is provided below the operating platform 101, and support frames for installing the pushers 104 extend from both sides of the operating frame. The pushers 104 can be hydraulic rods or electric telescopic rods, and a pusher plate is fixed at the front end of the pusher rod, so that it is easier to align the ends of the steel bar 7 to be bent. The pushers 104 can align the center of the steel bar 7 to be bent with the arc center of the plurality of stoppers 105, so as to ensure that the shapes of the steel bar 7 to be bent are consistent after bending.

[0043] Preferably, the Figure 1 , Figure 2 and Figure 8As shown, the side conveyor belt assembly includes a side lifting frame 402, a side guide rail fixed on the side lifting frame 402, a side slider slidably mounted on the side guide rail, and a side conveyor belt 401 mounted on the side slider. When the side lifting frame 402 rises to the highest position, the upper surface of the side conveyor belt 401 is higher than the height of the stopper 105. When the side lifting frame 402 falls to the lowest position, the upper surface of the side conveyor belt 401 is lower than the height of the operating platform 101. The movement of the side conveyor belt 401 and the side slider must be driven by a motor. A collecting rack 5 for collecting bent steel bars can be arranged on the side of the operating platform 101 away from the lifting mechanism 2. The upper surface of the collecting rack 5 has an inclined surface for sliding the bent steel bars, and the side of the collecting rack 5 away from the operating platform 101 is provided with a vertical rod for blocking the bent steel bars. The side conveyor belt 401 is first lowered to the lowest height by the side lifting frame 402. After the steel bars are bent, the side conveyor belt 401 is moved to the bottom of the bent steel bars through the slider 209, and the side lifting frame 402 is raised to lift the bent steel bars. The side slider is moved and the side conveyor belt 401 is driven to rotate at the same time, thereby driving the bent steel bars to fall into the collecting rack 5, thereby completing the collection of the bent steel bars.

[0044] Furthermore, if Figure 1 and Figure 8 As shown, a side lifting frame for lifting the bent steel bars can be provided on the operating platform 101. The side lifting frame can be installed on the operating platform 101 in a liftable manner. The lowest height of the side lifting frame is lower than the height of the operating platform 101, so that the height of the side conveyor belt 401 can be set to be flush with the operating platform 101 or slightly higher than the operating platform 101. When the bent steel bars need to be transported, the bent steel bars are first lifted to a certain height by the side lifting frame, and then the side conveyor belt 401 is moved to the bottom of the bent steel bars, and then the bent steel bars are lowered, so that the bent steel bars fall on the side conveyor belt 401, and then the bent steel bars are transported and collected.

[0045] Preferably, a middle conveyor belt assembly is provided in the middle of the operating platform 101 for removing the middle part of the bent steel bar from the operating platform 101 and parallel to the side conveyor belt assembly. The middle conveyor belt assembly includes a middle lifting frame 404, a middle guide rail fixed on the middle lifting frame 404, a middle slider slidably mounted on the middle guide rail, and a middle conveyor belt 403 mounted on the middle slider. A gap is provided on the side of the operating platform 101 away from the loading device for accommodating the middle guide rail. Specifically, the middle lifting frame 404 can be directly installed on the operating frame through the gap, and the operating platform 101 can also be further provided with a middle lifting frame 106 for lifting the middle part of the bent steel bar. The middle lifting frame 106 can be installed on the operating platform 101 in a liftable manner. The lowest height of the middle lifting frame 106 is lower than the height of the operating platform 101, so that the height of the middle conveyor belt 403 can be set to be flush with the operating platform 101 or slightly higher than the operating platform 101. When the bent steel bar needs to be transported, the bent steel bar is first lifted to a certain height by the middle lifting frame 106, and then the middle conveyor belt 403 is moved to the bottom of the bent steel bar, and then the bent steel bar is lowered, so that the bent steel bar falls on the middle conveyor belt 403, and then the bent steel bar is transported and collected.

[0046] On the other hand, Figures 1 to 8 As shown, the utility model also provides a steel bar bending method using the steel bar bending machine as described above, comprising the following steps: the horizontal transport mechanism 3 transports the steel bar 7 to be bent toward the lifting mechanism 2 until the steel bar 7 to be bent is close to the lifting mechanism 2; the driving member 205 drives the transmission assembly to rotate, and the transmission assembly controls the movable plate assembly to descend until the lowest step of the movable step plate 202 is located below the steel bar 7 to be bent, and the movable plate assembly is controlled to be lifted by the transmission assembly until the steel bar 7 to be bent is taken over from the horizontal transport mechanism 3; the driving member 205 drives the transmission assembly to rotate, and the transmission assembly controls the movable plate assembly to descend, so that the movable step plate 202 places the steel bar 7 to be bent on the lowest step of the fixed step plate 201, and the transmission assembly controls the movable plate assembly to be lifted. The brake plate assembly is lifted so that the movable step plate 202 takes over the steel bar 7 to be bent again, and the transmission assembly controls the brake plate assembly to descend so that the movable step plate 202 places the steel bar 7 to be bent on the upper step of the fixed step plate 201, and this process is repeated until the steel bar 7 to be bent is lifted to the highest step of the fixed step plate 201; the steel bar 7 to be bent rolls from the highest step of the fixed step plate 201 to the operating platform 101, and the guide wheel 102 slides to apply force to both sides of the steel bar 7 to be bent, and a plurality of blocks 105 block the middle part of the steel bar 7 to be bent, so that the steel bar 7 to be bent is bent, and the guide wheel 102 returns to its original position; the bent steel bar is removed from the operating platform 101 by the side conveyor belt assembly.

[0047] When the steel bar 7 to be bent is lifted to the highest step of the fixed step plate 201, the steel bar 7 to be bent can be stopped at a predetermined position before bending by the guidance of the inclined plate 208 and the limiting of the longitudinal limit block 103, and then the two ends of the steel bar are pushed by the pushing members 104 on both sides to align the center of the steel bar 7 to be bent with the center of the pre-bending arc line, and then the bending operation is performed by the guide wheel 102.

[0048] The utility model realizes the fully automatic loading and unloading of steel bars through the loading device and the unloading device, solving the technical problem that the steel bar bending machine in the prior art needs to manually add straight steel bars and manually take away the bent steel bars. The utility model realizes the full automation of steel bar bending, reduces the labor cost, and also reduces the safety risks during manual operation.

[0049] The parts not involved in the present utility model are the same as the prior art or can be implemented by the prior art. The above is only the preferred embodiment of the present utility model, and does not limit the present utility model in any form. Although the present utility model has been disclosed as the preferred embodiment, it is not used to limit the present utility model. Any technician familiar with this profession can make some changes or modify the technical content disclosed above to an equivalent embodiment of equivalent changes without departing from the scope of the technical solution of the present utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still belongs to the scope of the technical solution of the present utility model.

Claims

1. A steel bar bending machine, characterized in that: include: An arc bending device, the arc bending device comprising an operating platform, a plurality of blocks detachably mounted on the operating platform in an arc shape for controlling the bending angle of the steel bar to be bent, and guide wheels slidably mounted on both sides of the operating platform for applying a bending force to the steel bar to be bent; A feeding device, the feeding device comprises a horizontal transport mechanism, a lifting mechanism connected between the horizontal transport mechanism and the arc bending device, the lifting mechanism comprises a fixed frame, a movable plate assembly movably mounted on the fixed frame, a transmission assembly for controlling the lifting and lowering of the movable plate assembly, an inclined rail assembly for limiting the oblique lifting of the movable plate assembly and connected to the fixed frame, and a driving member for driving the transmission assembly to rotate, wherein: The fixed frame includes at least two fixed step plates for temporarily placing the steel bars to be bent and fixed at parallel intervals, the movable plate assembly includes at least two movable step plates for taking the steel bars to be bent from the horizontal transport mechanism and lifting them from the lowest step of the fixed step plates to the highest step, at least two movable step plates are located between at least two fixed step plates and are arranged at parallel intervals, the step inclination direction of the movable step plates is the same as the step inclination direction of the fixed step plates, the direction of the ramp assembly is consistent with the step inclination direction of the fixed step plates, and the highest step of the fixed step plates extends above the operating platform and is inclined toward one side of the operating platform; A material unloading device includes a side conveyor belt assembly for removing the bent steel bars from the operating platform, and the side conveyor belt assembly is slidably installed on both sides of the bending device.

2. The steel bar bending machine according to claim 1, characterized in that: The transmission assembly includes a mounting rod for fixing at least two movable step plates, a rotating shaft driven to rotate by the driving member, and an eccentric wheel eccentrically fixed on the rotating shaft and with its outer circumference in contact with the mounting rod. When the protruding section of the eccentric wheel is in contact with the mounting rod, the height of the movable step plate is higher than the height of the fixed step plate. When the narrowed section of the eccentric wheel is in contact with the mounting rod, the height of the movable step plate is lower than the height of the fixed step plate.

3. The steel bar bending machine according to claim 2, characterized in that: The number of the eccentric wheels is at least two, at least two of the eccentric wheels are fixed on the rotating shaft at intervals, the mounting rod is provided with at least two ear plate groups corresponding to the at least two eccentric wheels one by one, and a rotating wheel for contacting the eccentric wheels is rotatably mounted on the ear plate group.

4. The steel bar bending machine according to claim 2, characterized in that: The inclined rail assembly comprises a slide rail fixed on the fixing frame and a slider slidably mounted on the slide rail, wherein the slider is fixed on the mounting rod.

5. The steel bar bending machine according to claim 1, characterized in that: The horizontal transport mechanism comprises a conveying chain for transporting the steel bars to be bent to the lowest step position of the fixed step plate.

6. The steel bar bending machine according to claim 1, characterized in that: An inclined plate is provided on the top of the fixed step plate for the steel bars to be bent to slide to the operating platform. The operating platform is provided with at least two longitudinal limit blocks for blocking the steel bars to be bent from sliding down from the inclined plate. The longitudinal limit blocks are installed on the operating platform in a liftable manner, and the lowest height of the longitudinal limit blocks is lower than the height of the operating platform.

7. The steel bar bending machine according to claim 1, characterized in that: Two pushing members for aligning the center of the steel bar to be bent with the arc center of the plurality of stoppers are installed on both sides of the operating platform, and the pushing members correspond to the two ends of the steel bar to be bent on the operating platform.

8. The steel bar bending machine according to claim 1, characterized in that: The side conveyor belt assembly includes a side lifting frame, a side guide rail fixed on the side lifting frame, a side slider slidably installed on the side guide rail, and a side conveyor belt installed on the side slider. When the side lifting frame rises to the highest position, the upper surface of the side conveyor belt is higher than the height of the stopper. When the side lifting frame falls to the lowest position, the upper surface of the side conveyor belt is lower than the height of the operating platform.

9. The steel bar bending machine according to claim 1, characterized in that: A middle conveyor belt assembly is provided in the middle of the operating platform, which is used to remove the middle part of the bent steel bar from the operating platform and is parallel to the side conveyor belt assembly. The middle conveyor belt assembly includes a middle lifting frame, a middle guide rail fixed on the middle lifting frame, a middle slider slidably installed on the middle guide rail, and a middle conveyor belt installed on the middle slider. A gap is provided on the side of the operating platform away from the feeding device for accommodating the middle guide rail.

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