CN220532827U - Reinforcing steel bar returning sizing mechanism and hoop bending machine - Google Patents

Abstract

The utility model belongs to the technical field of reinforcement processing production lines, and discloses a reinforcement loopback sizing mechanism and a hoop bending machine. The steel bar returning sizing mechanism comprises a horizontal returning assembly, a steel bar transmission assembly and a sizing assembly, wherein the horizontal returning assembly comprises a returning frame, the returning frame is vertically arranged and can move along a first horizontal direction to be close to or far away from the steel bar; the steel bar transmission assembly comprises an upper pressing assembly and a lower transmission assembly which are arranged on the returning frame, the upper pressing assembly can slide up and down to press the steel bar on the lower transmission assembly, the lower transmission assembly is rotationally connected to the returning frame, and the lower transmission assembly can drive the steel bar to reciprocate along the axial direction; the sizing component is arranged on the returning frame and can limit and size the reciprocating distance of the reinforcing steel bars. The automatic back bending device is convenient for realizing the automatic back bending of the steel bar tail twice, realizes the automatic control of the length and the position of the two bending of the steel bar tail twice, and can improve the production efficiency and the automation degree of the steel bar.

Description

Reinforcing steel bar returning sizing mechanism and hoop bending machine

Technical Field

The utility model relates to the technical field of reinforcement processing production lines, in particular to a reinforcement back-feeding sizing mechanism and a hoop bending machine.

Background

The hoop bending machine is automatic steel bar machining equipment for automatically bending steel bars, and along with the diversification of production modes, the market demand for the steel bars needing to be bent forward and backward twice is increased. The existing hoop bending machine can produce the reinforcing steel bars, but the original loop back mechanism is horizontally arranged and is connected behind the bending mechanism and the shearing mechanism, so that the whole length of processing equipment is too long, and when the processing equipment is switched to produce the reinforcing steel bars which are only subjected to forward bending each time, the loop back mechanism is required to be manually operated to be moved away, and the equipment space and the automation degree are required to be improved.

Disclosure of Invention

The utility model aims to provide a reinforcing steel bar returning sizing mechanism and a hoop bending machine, which are used for solving the problems of large equipment space and low automation degree of the reinforcing steel bar returning mechanism and the hoop bending machine.

To achieve the purpose, the utility model adopts the following technical scheme:

reinforcing bar returns scale mechanism, include:

a horizontal return assembly comprising a return frame, the return frame being vertically disposed, the return frame being movable in a horizontal direction to approach or depart from the rebar;

the steel bar transmission assembly comprises an upper pressing assembly and a lower transmission assembly which are arranged on the returning frame, the upper pressing assembly can slide up and down along the vertical direction to press the steel bar on the lower transmission assembly, the lower transmission assembly is rotationally connected to the returning frame, and the lower transmission assembly can drive the steel bar to reciprocate along the axial direction of the steel bar;

the sizing component is arranged on the loopback frame, and can limit and size the distance of the reciprocating motion of the reinforcing steel bars.

Optionally, the horizontal loopback assembly further comprises:

the support base is provided with two guide shafts which are parallel to each other, and the return frame is connected to the guide shafts in a sliding manner;

the first horizontal driving mechanism is installed on the supporting base, and the output end of the first horizontal driving mechanism is connected with the returning frame to drive the returning frame to slide.

Optionally, the pressing assembly includes:

the upper pressing wheel is rotationally connected to a sliding shaft which is slidably connected to the returning frame, and the sliding direction of the sliding shaft is a vertical direction;

the first vertical driving mechanism is installed on the returning frame, and the output end of the first vertical driving mechanism is connected with the sliding shaft to drive the sliding shaft to slide.

Optionally, the upper pressing assembly further comprises a sliding block, the sliding block is arranged at one end, deviating from the upper pressing wheel, of the sliding shaft, a sliding groove is formed in the returning frame, and the sliding block is connected in the sliding groove in a sliding mode.

Optionally, the lower transmission assembly includes:

the transmission wheel is rotationally connected to the returning frame through a transmission shaft and is positioned right below the upper pressing wheel, a gear is further arranged on the transmission shaft, and the gear, the transmission shaft and the transmission wheel can synchronously rotate;

the second vertical driving mechanism is arranged on the returning frame, a rack is arranged at the output end of the second vertical driving mechanism and is in meshed transmission connection with the gear, the second vertical driving mechanism drives the rack to lift so as to drive the gear to rotate, and then the driving wheel is driven to rotate, and when the steel bar is clamped between the upper pressing wheel and the driving wheel, the driving wheel can drive the steel bar to reciprocate.

Optionally, the lower transmission assembly further comprises a guide block, the guide block is provided with a guide hole, the guide block is arranged on the returning frame and located below the rack, and the bottom end of the rack is slidably arranged in the guide hole of the guide block.

Optionally, the sizing assembly includes:

the adjusting plate is rotatably connected to the returning frame and positioned above the rack, and a first limiting piece and a second limiting piece are arranged on the adjusting plate; when the adjusting plate is positioned at a first rotation position, the first limiting piece is positioned right above the rack, and when the adjusting plate is positioned at a second rotation position, the second limiting piece is positioned right above the rack, and one end of the first limiting piece and one end of the second limiting piece, which are towards the rack, are provided with a height difference;

the second horizontal driving mechanism is rotatably arranged on the returning frame, and the output end of the second horizontal driving mechanism is hinged with the adjusting plate to drive the adjusting plate to rotate;

and the third limiting piece is connected with the returning frame, and can be stopped against the third limiting piece to limit when the rack descends.

Optionally, the top of rack is equipped with the shock pad, the shock pad is equipped with three shock attenuation position, and three the shock attenuation position corresponds respectively first locating part, second locating part and third locating part.

Optionally, the limiting heights of the first limiting piece and the second limiting piece on the adjusting plate are adjustable, and the limiting height of the third limiting piece on the returning frame is adjustable.

The utility model provides a hoop bending machine which comprises the reinforcing steel bar returning sizing mechanism.

The utility model has the beneficial effects that:

according to the reinforcement bar back-feeding sizing mechanism, the reinforcement bar transmission assembly comprises the upper pressing assembly and the lower transmission assembly, when the back feeding frame of the horizontal back feeding assembly drives the reinforcement bar transmission assembly to be close to the reinforcement bar, the upper pressing assembly of the reinforcement bar transmission assembly slides downwards and can clamp the reinforcement bar on the lower transmission assembly, and the reinforcement bar is driven to reciprocate along the axial direction through the transmission motion of the lower transmission assembly, so that the two-time automatic back-feeding reverse bending of the tail of the reinforcement bar is conveniently realized; limiting and sizing the distance of the reciprocating motion of the steel bar by arranging a sizing component, avoiding excessive motion and realizing automatic control of the length and the position of the two bending of the tail part of the steel bar; when the horizontal returning assembly moves away from the steel bars, blanking of finished steel bars is realized, the production of the steel bars subjected to single forward bending processing is not affected, and the production efficiency of the steel bars is improved; the reinforcing steel bar transmission assembly and the sizing assembly are arranged on the returning frame, so that the equipment space of the existing hoop bending machine production line is greatly optimized, and the degree of automation of forward and reverse bending of the reinforcing steel bars is improved.

The hoop bending machine comprises the reinforcing steel bar returning sizing mechanism provided by the utility model, so that the returning and sizing control of the forward and reverse bending of the reinforcing steel bar are realized, the equipment space of the production line of the existing hoop bending machine is greatly optimized, the structure is compact, the degree of automation of the forward and reverse bending of the reinforcing steel bar is improved, and the improvement of the hoop bending efficiency of the reinforcing steel bar is facilitated.

Drawings

Fig. 1 is a front view of a rebar loopback sizing mechanism of the present utility model;

fig. 2 is a right side view of the rebar loop-back sizing mechanism of the present utility model;

fig. 3 is a left side view of the rebar loop-back sizing mechanism of the present utility model;

fig. 4 is a top view of the rebar loop-back sizing mechanism of the present utility model;

fig. 5 is a schematic structural view of a shock pad in the reinforcing bar loopback sizing mechanism of the present utility model.

In the figure:

1. a horizontal return assembly; 11. a back feeding frame; 111. a chute; 12. a support base; 13. a first horizontal driving mechanism; 14. a guide shaft; 15. guide sleeve;

2. a steel bar transmission assembly; 21. an upper pressing assembly; 211. a pressing wheel is arranged; 212. a first vertical drive mechanism; 213. a sliding shaft; 214. a slide block; 215. briquetting; 22. a lower transmission assembly; 221. a driving wheel; 222. a second vertical drive mechanism; 223. a transmission shaft; 224. a gear; 225. a rack; 226. a guide block; 227. a shock pad; 2271. a first shock absorption position; 2272. the second damping position; 2273. a third damping position;

3. a sizing component; 31. an adjustment plate; 311. a nylon sleeve; 312. a first pin; 32. a second horizontal driving mechanism; 321. a bracket; 322. a second pin; 33. a third limiting member; 34. a first limiting member; 35. and the second limiting piece.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The utility model provides a reinforcement bar returning sizing mechanism, which comprises a horizontal returning assembly 1, a reinforcement bar transmission assembly 2 and a sizing assembly 3, wherein the horizontal returning assembly 1 comprises a returning frame 11, the returning frame 11 is vertically arranged, and the returning frame 11 can move along a first horizontal direction to approach or separate from reinforcement bars; the steel bar transmission assembly 2 comprises an upper pressing assembly 21 and a lower transmission assembly 22 which are arranged on the returning frame 11, the upper pressing assembly 21 can slide up and down to press the steel bar on the lower transmission assembly 22, the lower transmission assembly 22 is rotationally connected to the returning frame 11, and the lower transmission assembly 22 can drive the steel bar to reciprocate along the axial direction of the steel bar; the sizing component 3 is arranged on the loopback frame 11, and the sizing component 3 can limit and size the reciprocating distance of the reinforcing steel bars.

The reinforcing steel bar returning and sizing mechanism is used for carrying out reverse bending on reinforcing steel bars after forward bending in hoop bending machine equipment, and realizing reverse bending recovery and sizing bending. By arranging the steel bar transmission assembly 2, the steel bar transmission assembly 2 comprises an upper pressing assembly 21 and a lower transmission assembly 22, and when the back conveying frame 11 of the horizontal back conveying assembly 1 drives the steel bar transmission assembly 2 to be close to the steel bar, the upper pressing assembly 21 of the steel bar transmission assembly 2 slides downwards and can clamp the steel bar on the lower transmission assembly 22, namely, the steel bar is clamped and tightly fixed between the upper pressing assembly 21 and the lower transmission assembly 22; the lower transmission component 22 is used for driving the reinforcing steel bars to reciprocate along the axial direction thereof, so that the tail parts of the reinforcing steel bars after forward bending can be conveniently and reversely bent in a back-and-forth mode twice; by arranging the sizing component 3, the distance of the reciprocating motion (Y-direction motion) of the steel bar is limited and sized by the lower transmission component 22, excessive motion of the steel bar and the lower transmission component 22 is avoided, and automatic control of the two-time bending length and position of the tail part of the steel bar is realized; when the horizontal returning assembly 1 moves away from the steel bars, blanking of finished steel bars is realized, the production of the steel bars subjected to single forward bending is not affected, and the production efficiency of the steel bars is improved; the steel bar transmission assembly 2 and the sizing assembly 3 are both arranged on the loopback frame 11, and can move along with the loopback frame 11 in the first horizontal direction (X direction in figure 1), so that the equipment space of the existing hoop bending machine production line is greatly optimized, and compared with the forward and reverse bending positions of the steel bars needing manual operation in the prior art, the automatic forward and reverse bending degree of the steel bars is improved.

Optionally, the horizontal returning assembly 1 further comprises a supporting base 12 and a first horizontal driving mechanism 13, wherein two guide shafts 14 parallel to each other are arranged on the supporting base 12, and the returning frame 11 is slidably connected to the guide shafts 14; the first horizontal driving mechanism 13 is mounted on the supporting base 12, and an output end of the first horizontal driving mechanism 13 is connected with the returning frame 11 to drive the returning frame 11 to slide.

As shown in fig. 1 and 2, two guide shafts 14 parallel to each other in the horizontal direction are disposed on the support base 12 along the X direction, two ends of the guide shafts 14 are fixedly connected to the support base 12, and the bottom end of the return frame 11 is mounted on the guide shafts 14 through guide sleeves 15, so as to realize sliding connection between the return frame 11 and the guide shafts 14. The first horizontal driving mechanism 13 is preferably an air cylinder, the output end of the first horizontal driving mechanism 13 is provided with a floating joint and is connected with the returning frame 11, the extension and retraction of the first horizontal driving mechanism 13 can drive the returning frame 11 to slide forwards and backwards along X, the movement of the returning frame 11, which is close to the reinforcing steel bars and far away from the reinforcing steel bars, is achieved, and the bending of the reinforcing steel bars and blanking after processing and forming are completed. Specifically, the first horizontal driving mechanism 13 is extended, the return frame 11 is close to the steel bar after being bent in the forward direction, and the steel bar transmission assembly 2 arranged on the return frame 11 can clamp and transmit the steel bar so as to bend the steel bar in the reverse direction; the first horizontal driving mechanism 13 contracts to realize blanking.

Optionally, the upper pressing assembly 21 includes an upper pressing wheel 211 and a first vertical driving mechanism 212, the upper pressing wheel 211 is rotatably connected to a sliding shaft 213, the sliding shaft 213 is slidably connected to the loopback frame 11, and the sliding direction of the sliding shaft 213 is a vertical direction; the first vertical driving mechanism 212 is mounted on the return frame 11, and an output end of the first vertical driving mechanism 212 is connected to the sliding shaft 213 to drive sliding of the sliding shaft 213.

Referring to fig. 1-2, in this embodiment, a long slot hole in a vertical direction (Z direction) is provided on the loopback frame 11, a sliding shaft 213 is slidably installed in the long slot hole, a boss is provided on the sliding shaft 213 and abuts against a side surface of the long slot hole, an upper pressing wheel 211 is rotatably installed at an end of the sliding shaft 213 through a bearing, and the sliding shaft 213 is driven by a first vertical driving mechanism 212 to slide up and down along the long slot hole, and the boss has a limit guiding function; meanwhile, the upper pressing wheel 211 can rotate in the bearing, when the upper pressing wheel 211 presses the steel bar, the upper pressing wheel 211 can rotate along with the movement of the steel bar when the steel bar moves along the axial direction, and the rotating pressing mode is adopted. The first vertical driving mechanism 212 is located above the sliding shaft 213, and the telescopic motion of the first vertical driving mechanism 212 drives the upper pressing wheel 211 to slide up and down. The first vertical drive mechanism 212 is preferably a cylinder.

Optionally, the upper pressing assembly 21 further includes a sliding block 214, the sliding block 214 is disposed at an end of the sliding shaft 213 facing away from the upper pressing wheel 211, the returning frame 11 is provided with a sliding groove 111, and the sliding block 214 is slidably connected in the sliding groove 111.

1-3, a sliding groove 111 is formed in one side, away from the upper pressing wheel 211, of the returning frame 11, a sliding block 214 is arranged at one end, away from the upper pressing wheel 211, of the sliding shaft 213, the sliding block 214 is connected with the sliding shaft 213 through a bolt, and the sliding block 214 is slidably connected in the sliding groove 111, so that two ends of the sliding shaft 213 are slidably supported on the returning frame 11; the output end of the first vertical driving mechanism 212 is in threaded connection with a pressing block 215, the pressing block 215 is matched with and installed and connected with a sliding block 214, and when the first vertical driving mechanism 212 moves in a telescopic mode, the pressing block 215, the sliding block 214, a sliding shaft 213 and the upper pressing wheel 211 integrally slide up and down along the vertical direction, so that pressing and steel bar transmission are achieved.

Optionally, the lower transmission assembly 22 includes a transmission wheel 221 and a second vertical driving mechanism 222, the transmission wheel 221 is rotatably connected to the loopback frame 11 through a transmission shaft 223 and is located right below the upper pinch roller 211, a gear 224 is further arranged on the transmission shaft 223, and the gear 224, the transmission shaft 223 and the transmission wheel 221 can synchronously rotate; the second vertical driving mechanism 222 is arranged on the returning frame 11, a rack 225 is arranged at the output end of the second vertical driving mechanism 222, the rack 225 is in meshed transmission connection with the gear 224, the second vertical driving mechanism 222 drives the rack 225 to lift so as to drive the gear 224 to rotate, and then the driving wheel 221 is driven to rotate, and when the steel bar is clamped between the upper pressing wheel 211 and the driving wheel 221, the driving wheel 221 can drive the steel bar to reciprocate.

Referring to fig. 1-3, the returning frame 11 is provided with a mounting hole, a bearing and a spacer assembly are mounted in the mounting hole, the transmission shaft 223 is mounted in the bearing and is limited and fixed by a snap spring, and the transmission shaft 223 can rotate in the bearing. The peripheral wall of the transmission shaft 223 is provided with a positioning table at a position for installing the transmission wheel 221, and the transmission wheel 221 is sleeved on the transmission shaft 223 through expansion and is limited at the positioning table, so that the transmission wheel 221 and the transmission shaft 223 can synchronously rotate. The transmission shaft 223 is provided with a key slot which is matched with an inner hole key slot of the gear 224, and the transmission shaft 223 is connected with the fixed gear 224 through a gear gland thread, so that the synchronous rotation connection of the gear 224 and the transmission shaft 223 is realized. The second vertical driving mechanism 222 is arranged at the top end of the returning frame 11 along the vertical direction, the output end of the second vertical driving mechanism 222 is vertically downwards arranged and connected with the top end of the rack 225 through a floating joint, the telescopic motion of the second vertical driving mechanism 222 drives the rack 225 to move up and down, the rack 225 and the gear 224 are meshed to form a gear-rack transmission mechanism, the rack 225 drives the gear 224 to rotate and then drives the transmission wheel 221 to rotate through the transmission shaft 223, the steel bar between the transmission wheel 221 and the upper pressing wheel 211 is axially moved under the rotation driving of the transmission wheel 221, the clamping end of the steel bar is enabled to move from the front end to the rear end, and reverse bending processing is convenient to carry out on the tail of the steel bar. Wherein, when the second vertical driving mechanism 222 extends downwards to the maximum distance, the driving wheel 221 rotates forward and drives the reinforcing steel bars to the reverse first bending position; when the second vertical driving mechanism 222 stretches upwards to a preset position, the driving wheel 221 reverses and drives the reinforcing steel bars to a reverse second bending position, so that the reciprocating motion of the reinforcing steel bars is realized.

Optionally, the lower transmission assembly 22 further includes a guide block 226, the guide block 226 is provided with a guide hole, the guide block 226 is disposed on the returning frame 11 and is located below the rack 225, and the bottom end of the rack 224 is slidably disposed in the guide hole of the guide block 226.

As shown in fig. 3, the outer diameter of the bottom end of the rack 225 is the same as that of the guide hole arranged on the guide block 226, and the bottom end of the rack 225 passes through the guide hole, so that the guide block 226 can support and guide the rack 225 when the rack 225 moves up and down along with the second vertical driving mechanism 222, and is used for supporting the rack 225 to be meshed with the gear 224 on the side surface, so that tooth disengagement is avoided.

Optionally, the sizing component 3 comprises an adjusting plate 31, a second horizontal driving mechanism 32 and a third limiting piece 33, wherein the adjusting plate 31 is rotatably connected to the returning frame 11 and is positioned above the rack 225, and the adjusting plate 31 is provided with a first limiting piece 34 and a second limiting piece 35; when the adjusting plate 31 is positioned at the first rotation position, the first limiting piece 34 is positioned right above the rack 225, and when the adjusting plate 31 is positioned at the second rotation position, the second limiting piece 35 is positioned right above the rack 225, and the first limiting piece 34 and the second limiting piece 35 have a height difference towards one end of the rack 225; the second horizontal driving mechanism 32 is rotatably installed on the returning frame 11, and the output end of the second horizontal driving mechanism 32 is hinged with the adjusting plate 31 to drive the adjusting plate 31 to rotate; the third stopper 33 is connected to the return frame 11, and the rack 225 can be stopped against the third stopper 33 to be stopped when it descends.

As shown in fig. 3 and 4, the adjusting plate 31 is V-shaped, and the first limiting member 34 and the second limiting member 35 are respectively disposed at two ends, and the rack 225 can be stopped against the first limiting member 34 or the second limiting member 35 during the lifting process, so as to limit the lifting height of the rack 225. The adjusting plate 33 can be driven to swing and switch between the first rotation position and the second rotation position by the expansion and contraction of the second horizontal driving mechanism 32, and the first limiting piece 34 and the second limiting piece 35 are arranged to have height differences towards one side of the rack 225, so that the limitation of the rack 225 at different lifting heights is realized. The third stopper 33 limits the lowering position of the rack 225, and the rack 225 can be stopped at the top end of the third stopper 33 to limit after lowering. Wherein, a nylon sleeve 311 and a first pin shaft 312 are arranged between the adjusting plate 31 and the returning frame 11 for rotary connection. The second horizontal driving mechanism 32 is mounted on a bracket 321, and the bracket 321 is rotatably connected to the return frame 11 through a second pin 322. The first pin 312 and the second pin 322 are both vertical (Z-direction) rotation shafts, so that the adjustment plate 31 and the second horizontal driving mechanism 32 are both rotated in respective horizontal planes. The second horizontal driving mechanism 32 is preferably an air cylinder, and when the second horizontal driving mechanism 32 stretches and contracts, the second horizontal driving mechanism 32 rotates around the second pin shaft 322, and the second horizontal driving mechanism 32 drives the adjusting plate 31 to rotate around the first pin shaft 312, so that the first limiting piece 34 and the second limiting piece 35 are driven to swing alternately and limit. Wherein, the output end of the second horizontal driving mechanism 32 is provided with a U-shaped fork hinged with the adjusting plate 31.

Optionally, a shock pad 227 is disposed at the top end of the rack 225, and the shock pad 227 is provided with three shock absorbing positions corresponding to the first limiting member 34, the second limiting member 35 and the third limiting member 33, respectively.

As shown in fig. 3 and 5, the shock pad 227 is Y-shaped, wherein the same sides of two vertex angles are respectively provided with a first shock absorption position 2271 and a second shock absorption position 2272, the corresponding positions of the other sides and the third limiting piece 33 are third shock absorption positions 2273, and the first shock absorption position 2271, the second shock absorption position 2272 and the third shock absorption position 2273 are respectively provided with a nylon pad, so as to play a role in buffering the rack 225. The shock pad 227 is provided at the top end of the rack 225, and the adjustment control of the rack 225 is achieved by limiting the up-and-down movement distance of the top end of the rack 225.

Optionally, the limiting height of the first limiting member 34 and the second limiting member 35 on the adjusting plate 31 is adjustable, and the limiting height of the third limiting member 33 on the returning frame 11 is adjustable.

In this embodiment, the first limiting member 34, the second limiting member 35 and the third limiting member 33 are all bolt members and are respectively in threaded connection with the adjusting plate 31 and the returning frame 11, specifically, the first limiting member 34 and the second limiting member 35 penetrate through two threaded holes in the adjusting plate 31 from top to bottom and adjust the limiting height through the screw depth, the height difference of the bottom end between the two is generally the distance between two bending points on the steel bar, and the upper surface of the top end of the rack 225 can be stopped against the first limiting member 34 or the second limiting member 35 to limit. The third limiting member 33 may be specifically screwed onto the guide block 226, as shown in fig. 3, the third limiting member 33 may adjust the limiting position of the lower surface of the top end of the rack 225 by adjusting the screwing depth, and the lower surface of the top end of the rack 225 may be abutted against the top end of the third limiting member 33 to limit. The specific height is related to the bending dimension of the steel bar, and the specific setting is needed according to actual conditions. It will be appreciated that the top end of the rack 225 projects towards the side facing away from the gear 224 for limiting purposes, which is advantageous for saving layout space. The top end of the rack 225 is protruded towards one side away from the gear 224 by providing a shock pad 227, and the structure is simple and easy to process and assemble.

The utility model also provides a hoop bending machine, which comprises the reinforcing steel bar returning sizing mechanism provided by the embodiment.

The hoop bending machine comprises the reinforcing steel bar returning sizing mechanism provided by the utility model, so that the returning and sizing control of the forward and reverse bending of the reinforcing steel bar are realized, the equipment space of the production line of the existing hoop bending machine is greatly optimized, the structure is compact, the degree of automation of the forward and reverse bending of the reinforcing steel bar is improved, and the improvement of the hoop bending efficiency of the reinforcing steel bar is facilitated.

The normal bending of the reinforcing steel bar is a general bending process, and therefore, the description thereof will not be given. The hoop bending machine also comprises a shearing mechanism and a bending mechanism, and the steel bar returning and sizing mechanism is applied, so that the hoop bending machine carries out reverse twice bending processing on the steel bar, and the process is briefly described as follows:

first, the second horizontal driving mechanism 32 is in an initial contracted state, and the bottom end of the second limiting member 35 is abutted against the second damping position 2272 at the top end of the rack 225; the first horizontal driving mechanism 13 drives the loopback frame 11 to extend to the steel bar, the steel bar is positioned between the upper pressing wheel 211 and the driving wheel 221 at the moment, the first vertical driving mechanism 212 extends downwards and drives the upper pressing wheel 211 to slide downwards to press the steel bar on the driving wheel 221, and the shearing mechanism shears the tail of the steel bar;

the second vertical driving mechanism 222 extends downwards and drives the rack 225 to move downwards and simultaneously drives the gear 224 to rotate, the gear 224 drives the driving wheel 221 to rotate through the transmission shaft 223, the driving wheel is stopped until the bottom end of the rack 225 is abutted against the third limiting piece 33, and at the moment, the first bending position of the tail part of the steel bar is transmitted to the bending mechanism for first bending;

the second horizontal driving mechanism 32 stretches out to drive the adjusting plate 31 to swing so that the first limiting piece 34 is opposite to the first damping position 2271; the output end of the second vertical driving mechanism 222 contracts and drives the rack 225 to rise to abut against the first damping position 2271 to stop, and the gear 224 is reversed in the rising process of the rack 225 so that the second bending position of the tail part of the steel bar is transmitted to the bending mechanism to carry out second bending;

the output end of the first horizontal driving mechanism 13 contracts and drives the returning frame 11 to retract, and the blanking of the reinforcing steel bars is completed.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Reinforcing bar returns scale mechanism, its characterized in that includes:

a horizontal return assembly (1), the horizontal return assembly (1) comprising a return frame (11), the return frame (11) being vertically disposed, the return frame (11) being movable in a horizontal direction to approach or depart from the rebar;

the steel bar transmission assembly (2), the steel bar transmission assembly (2) comprises an upper pressing assembly (21) and a lower transmission assembly (22) which are arranged on the returning frame (11), the upper pressing assembly (21) can slide up and down along the vertical direction to press the steel bar on the lower transmission assembly (22), the lower transmission assembly (22) is rotationally connected to the returning frame (11), and the lower transmission assembly (22) can drive the steel bar to reciprocate along the axial direction of the steel bar;

the sizing component (3), sizing component (3) are located on returning frame (11), sizing component (3) can be right the distance of the reciprocating motion of reinforcing bar is spacing and sizing.

2. The bar return sizing mechanism of claim 1, wherein the horizontal return assembly (1) further comprises:

the device comprises a support base (12), wherein two guide shafts (14) which are parallel to each other are arranged on the support base (12), and the return frame (11) is connected to the guide shafts (14) in a sliding manner;

the first horizontal driving mechanism (13), the first horizontal driving mechanism (13) is installed on the supporting base (12), and the output end of the first horizontal driving mechanism (13) is connected with the returning frame (11) to drive the returning frame (11) to slide.

3. The bar return sizing mechanism of claim 1, wherein the up-press assembly (21) comprises:

the upper pressing wheel (211), the upper pressing wheel (211) is rotatably connected to a sliding shaft (213), the sliding shaft (213) is slidably connected to the returning frame (11), and the sliding direction of the sliding shaft (213) is a vertical direction;

the first vertical driving mechanism (212), the first vertical driving mechanism (212) is installed on the loopback frame (11), and the output end of the first vertical driving mechanism (212) is connected with the sliding shaft (213) to drive the sliding shaft (213) to slide.

4. A reinforcing bar loopback sizing mechanism according to claim 3, wherein the upper press assembly (21) further comprises a slide block (214), the slide block (214) is arranged at one end of the sliding shaft (213) which is away from the upper press wheel (211), a chute (111) is arranged on the loopback frame (11), and the slide block (214) is slidably connected in the chute (111).

5. A bar code sizing mechanism according to claim 3, wherein the lower drive assembly (22) comprises:

the transmission wheel (221), the transmission wheel (221) is rotatably connected to the loopback frame (11) through a transmission shaft (223) and is positioned right below the upper pressing wheel (211), a gear (224) is further arranged on the transmission shaft (223), and the gear (224), the transmission shaft (223) and the transmission wheel (221) can synchronously rotate;

the second vertical driving mechanism (222), the second vertical driving mechanism (222) is arranged on the loopback frame (11), a rack (225) is arranged at the output end of the second vertical driving mechanism (222), the rack (225) is in meshed transmission connection with the gear (224), the second vertical driving mechanism (222) drives the rack (225) to lift so as to drive the gear (224) to rotate, and then the driving wheel (221) is driven to rotate, and when the steel bar is clamped between the upper pressing wheel (211) and the driving wheel (221), the driving wheel (221) can drive the steel bar to reciprocate.

6. The steel bar return sizing mechanism according to claim 5, wherein the lower transmission assembly (22) further comprises a guide block (226), the guide block (226) is provided with a guide hole, the guide block (226) is arranged on the return frame (11) and is located below the rack (225), and the bottom end of the rack (225) is slidably arranged in the guide hole of the guide block (226).

7. The bar return sizing mechanism of claim 5, wherein the sizing assembly (3) comprises:

the adjusting plate (31) is rotatably connected to the returning frame (11) and is positioned above the rack (225), and a first limiting piece (34) and a second limiting piece (35) are arranged on the adjusting plate (31); when the adjusting plate (31) is positioned at a first rotation position, the first limiting piece (34) is positioned right above the rack (225), and when the adjusting plate (31) is positioned at a second rotation position, the second limiting piece (35) is positioned right above the rack (225), and the first limiting piece (34) and the second limiting piece (35) have a height difference towards one end of the rack (225);

the second horizontal driving mechanism (32), the second horizontal driving mechanism (32) is rotatably arranged on the returning frame (11), and the output end of the second horizontal driving mechanism (32) is hinged with the adjusting plate (31) to drive the adjusting plate (31) to rotate;

and a third limiting member (33), wherein the third limiting member (33) is connected to the return frame (11), and the rack (225) can be stopped against the third limiting member (33) to limit when descending.

8. The reinforcement bar return sizing mechanism of claim 7, wherein a shock pad (227) is provided at a top end of the rack (225), the shock pad (227) is provided with three shock absorbing positions, and the three shock absorbing positions correspond to the first limiting member (34), the second limiting member (35) and the third limiting member (33), respectively.

9. The bar return sizing mechanism according to claim 7, characterized in that the limit height of the first limit piece (34) and the second limit piece (35) on the adjustment plate (31) is adjustable, and the limit height of the third limit piece (33) on the return frame (11) is adjustable.

10. A hoop bending machine comprising a bar return sizing mechanism according to any one of claims 1 to 9.