CN220532827U - Steel bar return length setting 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

Steel bar return length setting mechanism and hoop bending machine

Technical field

The utility model relates to the technical field of steel bar processing production lines, and in particular to a steel bar return and length-fixing mechanism and a hoop bending machine.

Background technique

The hoop bending machine is an automatic steel bar processing equipment that automatically bends steel bars. With the diversification of production methods, the market demand for steel bars that require two forward and reverse bends has increased. Although the existing hoop bending machine can produce such steel bars, the original return mechanism is placed horizontally and connected behind the bending mechanism and shearing mechanism, resulting in the overall length of the processing equipment being too long, and only forward bending is performed each time it is switched to production. When removing steel bars, manual operation is required to remove the return mechanism, and the equipment space and automation level need to be improved.

Utility model content

The purpose of this utility model is to provide a steel bar return fixed-length mechanism and a hoop bending machine to solve the problems of large equipment space and low degree of automation of the steel bar return mechanism and the hoop bending machine.

To achieve this purpose, the utility model adopts the following technical solutions:

Reinforcement bar return-to-length mechanism, including:

A horizontal return assembly, the horizontal return assembly includes a return frame, the return frame is arranged vertically, and the return frame can move in the horizontal direction to approach or move away from the steel bars;

Steel bar transmission assembly, the steel bar transmission assembly includes an upper pressure assembly and a lower transmission assembly provided on the return frame. The upper pressure assembly can slide up and down in the vertical direction to compress the steel bars on the lower transmission assembly. On the assembly, the lower transmission assembly is rotatably connected to the return frame, and the lower transmission assembly can drive the steel bar to reciprocate along the axial direction of the steel bar;

A fixed-length component is provided on the return frame, and the fixed-length component can limit and determine the distance of the reciprocating motion of the steel bar.

Optionally, the horizontal loopback component also includes:

A support base, two mutually parallel guide shafts are provided on the support base, and the return frame is slidingly connected to the guide shafts;

The first horizontal driving mechanism is installed on the support base, and the output end of the first horizontal driving mechanism is connected to the return frame to drive the return frame to slide.

Optionally, the upper pressure component includes:

Upper pressure wheel, the upper pressure wheel is rotatably connected to the sliding shaft, the sliding shaft is slidingly connected to the return frame, and the sliding direction of the sliding shaft is the vertical direction;

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

Optionally, the upper pressing assembly further includes a slider, which is disposed on an end of the sliding shaft away from the upper pressing wheel. The return frame is provided with a chute, and the slider is slidably connected. in the chute.

Optionally, the lower transmission assembly includes:

A transmission wheel, which is rotatably connected to the return frame through a transmission shaft and is located directly below the upper pressure wheel. A gear is also provided on the transmission shaft. The gear, the transmission shaft and the The transmission wheels can rotate synchronously;

The second vertical driving mechanism is arranged on the return frame. The output end of the second vertical driving mechanism is provided with a rack, and the rack is meshed and transmission connected with the gear. , the second vertical driving mechanism drives the rack up and down to drive the gear to rotate, and then drives the transmission wheel to rotate, when the steel bar is clamped between the upper pressure wheel and the transmission wheel , the transmission wheel can drive the reciprocating motion of the steel bar.

Optionally, the lower transmission assembly further includes a guide block, the guide block is provided with a guide hole, the guide block is provided on the return frame and is located below the rack, and the bottom end of the rack The slide is arranged in the guide hole of the guide block.

Optionally, the sizing component includes:

Adjustment plate, the adjustment plate is rotatably connected to the return frame and is located above the rack. The adjustment plate is provided with a first limiter and a second limiter; when the adjustment plate is located at the first When the adjustment plate is in the second rotation position, the first limiter is located directly above the rack. When the adjustment plate is in the second rotation position, the second limiter is located directly above the rack. There is a height difference between the first limiting member and the second limiting member toward one end of the rack;

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

The third limiting member is connected to the return frame, and when the rack is lowered, it can stop against the third limiting member to limit the position.

Optionally, a shock absorbing pad is provided at the top of the rack, and the shock absorbing pad is provided with three shock absorbing positions, and the three shock absorbing positions correspond to the first limiting member and the second limiting member respectively. and the third limiting piece.

Optionally, the limiting height of the first limiting member and the second limiting member on the adjustment plate is adjustable, and the limiting height of the third limiting member on the return frame is adjustable. tune.

The utility model provides a hoop bending machine, which includes the steel bar return and length-fixing mechanism.

Beneficial effects of this utility model:

The steel bar return and length-fixing mechanism of the present utility model is provided with a steel bar transmission component. The steel bar transmission component includes an upper pressure component and a lower transmission component. When the return frame of the horizontal return component drives the steel bar transmission component to approach the steel bar, the upper pressure component of the steel bar transmission component It slides downward and can clamp the steel bar on the lower transmission assembly. The transmission movement of the lower transmission assembly drives the steel bar to reciprocate along its axial direction, which facilitates two automatic return and reverse bending of the rear end of the steel bar; through Set up a fixed-length component to limit and determine the reciprocating distance of the steel bar to avoid excessive movement and realize automatic control of the length and position of the two bends at the tail of the steel bar; when the horizontal return component moves away from the steel bar, the finished steel bar is realized The blanking does not affect the production of steel bars with only a single forward bending process, which is conducive to improving the production efficiency of steel bars; the steel bar transmission assembly and the fixed-length assembly are set on the return frame, which greatly optimizes the equipment space of the existing hoop bending machine production line. The degree of automation of forward and reverse bending of steel bars is improved.

The hoop bending machine of this utility model includes a steel bar return and length-fixing mechanism provided by the utility model, which realizes the return and length-fixing control of forward and reverse bending of steel bars, greatly optimizing the equipment space of the existing hoop bending machine production line, and has a compact structure. It improves the degree of automation of forward and reverse bending of steel bars and improves the efficiency of steel bar bending hoops.

Description of drawings

Figure 1 is a front view of the steel bar return and length-fixing mechanism of the present utility model;

Figure 2 is a right side view of the steel bar return and length-fixing mechanism of the present utility model;

Figure 3 is a left side view of the steel bar return and length-fixing mechanism of the present utility model;

Figure 4 is a top view of the steel bar return and length-fixing mechanism of the present invention;

Figure 5 is a schematic structural diagram of the shock-absorbing pad in the steel bar return and length-fixing mechanism of the present invention.

In the picture:

1. Horizontal return component; 11. Return frame; 111. Chute; 12. Support base; 13. First horizontal driving mechanism; 14. Guide shaft; 15. Guide bush;

2. Steel transmission assembly; 21. Upper pressure assembly; 211. Upper pressure wheel; 212. First vertical driving mechanism; 213. Sliding shaft; 214. Slider; 215. Pressure block; 22. Lower transmission assembly; 221. Transmission wheel; 222, second vertical drive mechanism; 223, transmission shaft; 224, gear; 225, rack; 226, guide block; 227, shock absorber; 2271, first shock absorber position; 2272, second shock absorber Earthquake position; 2273, third shock absorption position;

3. Fixed-length component; 31. Adjustment plate; 311. Nylon sleeve; 312. First pin; 32. Second horizontal driving mechanism; 321. Bracket; 322. Second pin; 33. Third limiter; 34. The first limiting member; 35. The second limiting member.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and examples. It can be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for convenience of description, only some but not all structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless otherwise explicitly stipulated and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a detachable connection. Integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the present invention, unless otherwise expressly stipulated and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features being in direct contact with each other. Features are not in direct contact but through other features between them. Furthermore, the terms "above", "above" and "above" a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this embodiment, the terms "upper", "lower", "left", "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplified operation. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and have no special meaning.

The utility model provides a steel bar return and fixed-length mechanism, which includes a horizontal return component 1, a steel bar transmission component 2 and a fixed-length component 3. The horizontal return component 1 includes a return frame 11. The return frame 11 is arranged vertically, and the return frame 11 can move along the first horizontal direction. directional movement to move closer to or away from the steel bars; the steel bar transmission assembly 2 includes an upper pressure assembly 21 and a lower transmission assembly 22 arranged on the return frame 11. The upper pressure assembly 21 can slide up and down to compress the steel bars on the lower transmission assembly 22, and the lower transmission assembly 22 The component 22 is rotatably connected to the return frame 11, and the lower transmission assembly 22 can drive the steel bar to reciprocate along the axial direction of the steel bar; the fixed-length component 3 is provided on the return frame 11, and the fixed-length component 3 can limit the distance of the reciprocating movement of the steel bar. position and length.

The utility model's steel bar return and fixed-length mechanism is used in the hoop bending machine equipment to bend the steel bar in the forward direction and then return it in the reverse direction for reverse bending, thereby realizing the recovery of reverse bending and fixed-length bending. By arranging the steel bar transmission assembly 2, the steel bar transmission assembly 2 includes an upper pressing assembly 21 and a lower transmission assembly 22. When the return frame 11 of the horizontal return assembly 1 drives the steel bar transmission assembly 2 close to the steel bar, the upper pressing assembly 21 of the steel bar transmission assembly 2 moves toward the steel bar. Slide downward and be able to clamp the steel bar on the lower transmission assembly 22, that is, the steel bar is clamped and pressed and fixed between the upper pressing assembly 21 and the lower transmission assembly 22; the transmission movement of the lower transmission assembly 22 drives the steel bar along its axial direction The reciprocating movement in the direction is convenient for realizing two reverse automatic return bending of the tail of the forwardly bent steel bar; by setting the fixed length component 3, the reciprocating movement (Y-direction movement) of the steel bar is realized through the lower transmission component 22 The distance is limited and fixed to avoid excessive movement of the steel bar and the lower transmission assembly 22, and automatic control of the length and position of the two bends of the steel bar tail is realized; when the horizontal return component 1 moves away from the steel bar, the finished steel bar is realized Blanking does not affect the production of steel bars with only a single forward bending process, which is conducive to improving the steel bar production efficiency; the steel bar transmission assembly 2 and the fixed-length assembly 3 are both arranged on the return frame 11, and can carry out the first horizontal direction ( (in the The degree of automation of bending.

Optionally, the horizontal return assembly 1 also includes a support base 12 and a first horizontal drive mechanism 13. Two mutually parallel guide shafts 14 are provided on the support base 12, and the return frame 11 is slidingly connected to the guide shafts 14; the first horizontal drive The mechanism 13 is installed on the support base 12, and the output end of the first horizontal driving mechanism 13 is connected to the return frame 11 to drive the return frame 11 to slide.

As shown in Figures 1 and 2, two guide shafts 14 parallel to each other in the horizontal direction are provided on the support base 12 along the X direction. Both ends of the guide shafts 14 are fixedly connected to the support base 12, and the bottom end of the return frame 11 The guide sleeve 15 is installed on the guide shaft 14 to achieve a sliding connection between the return frame 11 and the guide shaft 14 . The first horizontal driving mechanism 13 is preferably a cylinder. The output end of the first horizontal driving mechanism 13 is provided with a floating joint to connect with the return frame 11. The expansion and contraction of the first horizontal driving mechanism 13 can drive the return frame 11 to slide forward and back along the X, thereby realizing the return frame. 11. Movement close to the steel bar and away from the steel bar to complete the bending of the steel bar and blanking after processing and forming. Specifically, the first horizontal driving mechanism 13 extends, the return frame 11 is close to the forwardly bent steel bars, and the steel bar transmission assembly 2 provided on the return frame 11 can clamp and drive the steel bars to bend the steel bars in the reverse direction; first The 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 rotationally connected to the sliding shaft 213. The sliding shaft 213 is slidingly connected to the return frame 11. The sliding direction of the sliding shaft 213 is Vertical direction; the first vertical driving mechanism 212 is installed on the return frame 11, and the output end of the first vertical driving mechanism 212 is connected to the sliding shaft 213 to drive the sliding shaft 213.

With reference to Figures 1 and 2, in this embodiment, a long slotted hole in the vertical direction (Z direction) is provided on the return frame 11, a sliding shaft 213 is slidably installed in the long slotted hole, and a boss and a long slotted hole are provided on the sliding shaft 213. The sides of the sliding shaft 213 are against each other, and the end of the sliding shaft 213 is rotated through the bearing to install the upper pressing wheel 211. The first vertical driving mechanism 212 drives the sliding shaft 213 to slide up and down along the long slotted hole, and the boss has a limiting and guiding function; at the same time, the upper pressing wheel 211 It can rotate in the bearing. When the upper pressing wheel 211 compresses the steel bar and the steel bar moves in the axial direction, the upper pressing wheel 211 can rotate with the movement of the steel bar, which is a rotational compression method. 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 pressure wheel 211 to slide up and down. The first vertical drive mechanism 212 is preferably a cylinder.

Optionally, the upper pressure assembly 21 also includes a slider 214. The slider 214 is provided on an end of the sliding shaft 213 away from the upper pressure wheel 211. The return frame 11 is provided with a chute 111, and the slider 214 is slidingly connected to the chute 111. Inside.

With reference to Figures 1-3, a chute 111 is provided on the side of the return frame 11 facing away from the upper pressure wheel 211. A slider 214 is provided on the end of the sliding shaft 213 facing away from the upper pressure wheel 211. The slider 214 and the sliding shaft 213 are connected by bolts. , the slide block 214 is slidably connected in the slide groove 111, so that both ends of the sliding shaft 213 are slidably supported on the return frame 11; the output end of the first vertical driving mechanism 212 is threadedly connected to the pressure block 215, and the pressure block 215 and the slide block 214 When the first vertical driving mechanism 212 telescopically moves, the pressing block 215, the sliding block 214, the sliding shaft 213 and the upper pressing wheel 211 slide up and down in the vertical direction to compress and transmit the steel bars.

Optionally, the lower transmission assembly 22 includes a transmission wheel 221 and a second vertical drive mechanism 222. The transmission wheel 221 is rotatably connected to the return frame 11 through a transmission shaft 223 and is located directly below the upper pressure wheel 211. There is also a transmission shaft 223. A gear 224 is provided, and the gear 224, the transmission shaft 223 and the transmission wheel 221 can rotate synchronously; the second vertical driving mechanism 222 is provided on the return frame 11, and the output end of the second vertical driving mechanism 222 is provided with a rack 225. The bar 225 is meshed and connected with the gear 224. The second vertical driving mechanism 222 drives the rack 225 up and down to drive the gear 224 to rotate, and then drives the transmission wheel 221 to rotate. When the steel bar is clamped between the upper pressure wheel 211 and the transmission wheel 221 , the transmission wheel 221 can drive the reciprocating motion of the steel bar.

With reference to Figures 1-3, a mounting hole is provided on the return frame 11, and a bearing and a spacer assembly are installed in the mounting hole. The transmission shaft 223 is installed in the bearing and fixed by a circlip, and the transmission shaft 223 can rotate in the bearing. A positioning platform is provided on the outer peripheral wall of the transmission shaft 223 for installing the transmission wheel 221. The transmission wheel 221 is sleeved on the transmission shaft 223 through expansion and is limited at the positioning platform, so that the transmission wheel 221 and the transmission shaft 223 can rotate synchronously. A keyway is provided on the transmission shaft 223 to cooperate with the keyway in the inner hole of the gear 224, and the transmission shaft 223 is threaded through the gear gland to fix the gear 224, thereby achieving a synchronous rotational connection between the gear 224 and the transmission shaft 223. The second vertical driving mechanism 222 is arranged at the top of the return frame 11 along the vertical direction. The output end of the second vertical driving mechanism 222 is arranged vertically downward and is connected to the top of the rack 225 through a floating joint. The telescopic movement of the mechanism 222 drives the rack 225 to move up and down. The rack 225 meshes with the gear 224 to form a rack and pinion 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 transmission wheel 221 and the upper The steel bar between the pressing wheels 211 moves axially driven by the rotation of the transmission wheel 221, thereby causing the clamping end of the steel bar to move from the front end to the rear end, so as to facilitate the reverse bending process of the rear end of the steel bar. Among them, when the second vertical driving mechanism 222 extends downward to the maximum distance, the transmission wheel 221 rotates forward and drives the steel bar to the reverse first bending position; when the second vertical driving mechanism 222 extends upward to the preset position, the transmission wheel 221 reverses and drives the steel bar to the reverse second bending position, thus realizing the reciprocating motion of the steel bar.

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

As shown in Figure 3, the guide hole provided on the guide block 226 has the same outer diameter as the bottom end of the rack 225, and the bottom end of the rack 225 passes through the guide hole to ensure that the rack 225 rises and falls with the second vertical driving mechanism 222. When moving, the guide block 226 plays a supporting and guiding role for the rack 225 to support the rack 225 to mesh with the gear 224 on the side to prevent tooth loss.

Optionally, the sizing assembly 3 includes an adjustment plate 31 , a second horizontal driving mechanism 32 and a third limiting member 33 . The adjustment plate 31 is rotatably connected to the return frame 11 and is located above the rack 225 . The adjustment plate 31 is A first limiter 34 and a second limiter 35 are provided; when the adjustment plate 31 is in the first rotational position, the first limiter 34 is located directly above the rack 225, and when the adjustment plate 31 is in the second rotational position When, the second limiter 35 is located directly above the rack 225, and there is a height difference between the first limiter 34 and the second limiter 35 toward one end of the rack 225; the second horizontal drive mechanism 32 is rotatably installed on the return frame. 11. The output end of the second horizontal drive mechanism 32 is hinged with the adjustment plate 31 to drive the adjustment plate 31 to rotate; the third limiter 33 is connected to the return frame 11, and the rack 225 can stop against the third limiter 33 when it descends. To limit the position.

As shown in Figures 3 and 4, the adjustment plate 31 is V-shaped, with the first limiter 34 and the second limiter 35 respectively provided at the two ends. The rack 225 can stop against the first limiter during the rising process. member 34 or the second limiting member 35 to limit the rising height of the rack 225. Through the expansion and contraction of the second horizontal driving mechanism 32, the adjustment plate 33 can be driven to swing and switch between the first rotation position and the second rotation position, and the first limiter 34 and the second limiter 35 can be directed toward one side of the rack 225. A height difference is set on both sides to limit the rack 225 at different rising heights. The third limiting member 33 limits the descending position of the rack 225. After descending, the rack 225 can stop against the top end of the third limiting member 33 to limit the position. Among them, a nylon sleeve 311 and a first pin 312 are provided between the adjustment plate 31 and the return frame 11 for rotational connection. The second horizontal driving mechanism 32 is installed on the bracket 321 , and the bracket 321 is rotationally connected to the return frame 11 through the second pin 322 . The first pin 312 and the second pin 322 are both rotational axes in the vertical direction (Z direction), so that the adjustment plate 31 and the second horizontal driving mechanism 32 both rotate in their respective horizontal planes. The second horizontal driving mechanism 32 is preferably a cylinder. When the second horizontal driving mechanism 32 expands and contracts, the second horizontal driving mechanism 32 rotates around the second pin 322 and drives the adjusting plate 31 to rotate with the first axis through the second horizontal driving mechanism 32 . The pin 312 rotates as the center, thereby driving the first limiting member 34 and the second limiting member 35 to alternately swing and limit. The output end of the second horizontal driving mechanism 32 is provided with a U-shaped fork that is hingedly connected to the adjusting plate 31 .

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

As shown in FIG. 3 and FIG. 5 , the shock absorbing pad 227 is Y-shaped, in which the first shock absorbing position 2271 and the second shock absorbing position 2272 are respectively provided on the same side of the two vertex corners, and the other side is connected to the third limiting member. The position corresponding to 33 is the third shock absorbing position 2273. The first shock absorbing position 2271, the second shock absorbing position 2272 and the third shock absorbing position 2273 are respectively provided with nylon pads to buffer the rack 225. The shock absorbing pad 227 is disposed on the top 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 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 return frame 11 is adjustable.

In this embodiment, the first limiter 34 , the second limiter 35 and the third limiter 33 are all made of bolts and are threadedly connected to the adjustment plate 31 and the return frame 11 respectively. Specifically, the first limiter The member 34 and the second limit member 35 pass through the two threaded holes on the adjustment plate 31 from top to bottom, and the limit height is adjusted through the screw thread depth. The height difference between the bottom ends of the two is generally twice the height of the steel bar. The distance between the bending points allows the upper surface of the top end of the rack 225 to stop against the first limiting member 34 or the second limiting member 35 to limit the position. The third limiter 33 can be threadedly connected to the guide block 226. As shown in Figure 3, the third limiter 33 can adjust the limit position of the lower surface of the top of the rack 225 by adjusting the precession depth. The lower surface of the top end of 225 can stop against the top end of the third limiting member 33 to limit the position. The specific height is related to the bending size of the steel bar and needs to be set according to the actual situation. It can be understood that the top end of the rack 225 protrudes toward the side away from the gear 224 for position limiting, which is beneficial to saving layout space. The top end of the rack 225 is protruded toward the side away from the gear 224 by providing a shock absorbing pad 227. The structure is simple and easy to process and assemble.

The utility model also provides a hoop bending machine, which includes the steel bar return and length-fixing mechanism provided in the above embodiment.

The hoop bending machine of the present utility model includes a steel bar return and length-fixing mechanism provided by the utility model, which realizes the return and length-fixing control of forward and reverse bending of steel bars, greatly optimizing the equipment space of the existing hoop bending machine production line, and has a compact structure. It improves the degree of automation of forward and reverse bending of steel bars and improves the efficiency of steel bar bending hoops.

Forward bending of steel bars is a general bending process, so no further explanation will be given. The hoop bending machine usually also includes a shearing mechanism and a bending mechanism. The above-mentioned steel bar return and length determination mechanism is used. The hoop bending machine bends the steel bar twice in reverse. The process is briefly described as follows:

First, the second horizontal driving mechanism 32 is in an initial retracted state, and the bottom end of the second limiting member 35 abuts the second shock absorbing position 2272 at the top of the rack 225; the first horizontal driving mechanism 13 drives the return frame 11 to extend. When reaching the steel bar, the steel bar is between the upper pressing wheel 211 and the transmission wheel 221. The first vertical driving mechanism 212 extends downward and drives the upper pressing wheel 211 to slide downward and compress the steel bar on the transmission wheel 221, shearing The mechanism cuts off the tail end of the steel bar;

The second vertical driving mechanism 222 extends downward and drives the rack 225 to move downward while driving the gear 224 to rotate. The gear 224 drives the transmission wheel 221 to rotate through the transmission shaft 223 until the bottom end of the rack 225 stops at the third limit. It stops at position 33. At this time, the first bending position of the steel bar tail is transmitted to the bending mechanism for the first bending;

The second horizontal driving mechanism 32 extends out to drive the adjustment plate 31 to swing so that the first limiting member 34 is directly opposite the first shock absorbing position 2271; the output end of the second vertical driving mechanism 222 contracts and drives the rack 225 to rise to contact. It stops at the first damping position 2271. When the rack 225 rises, the gear 224 reverses so that the second bending position of the steel bar tail is transmitted to the bending mechanism for the second bending;

The output end of the first horizontal driving mechanism 13 contracts and drives the return frame 11 to retract, completing the blanking of the steel bars.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those of ordinary skill in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of the present invention. An exhaustive list of all implementations is neither necessary nor possible. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims (10)

1. The steel bar return-to-length mechanism is characterized by: Horizontal return assembly (1), the horizontal return assembly (1) includes a return frame (11), the return frame (11) is arranged vertically, and the return frame (11) can move in the horizontal direction to move closer to or away from the steel bars ; Steel bar transmission assembly (2). The steel bar transmission assembly (2) includes an upper pressure assembly (21) and a lower transmission assembly (22) provided on the return frame (11). The upper pressure assembly (21) can Slide up and down in the vertical direction to press the steel bar on the lower transmission assembly (22). The lower transmission assembly (22) is rotationally connected to the return frame (11). The lower transmission assembly (22) ) can drive the steel bar to reciprocate along the axial direction of the steel bar; The fixed-length component (3) is located on the return frame (11). The fixed-length component (3) can limit and determine the distance of the reciprocating movement of the steel bar. . 2. The steel bar return-to-length mechanism according to claim 1, characterized in that the horizontal return assembly (1) further includes: Support base (12), two mutually parallel guide shafts (14) are provided on the support base (12), and the return frame (11) is slidingly connected to the guide shaft (14); A first horizontal driving mechanism (13). The first horizontal driving mechanism (13) is installed on the support base (12). The output end of the first horizontal driving mechanism (13) is connected to the return frame (11). ) to drive the return frame (11) to slide. 3. The steel bar return-to-length mechanism according to claim 1, characterized in that the upper pressing assembly (21) includes: Upper pressure wheel (211), the upper pressure wheel (211) is rotatably connected to the sliding shaft (213), the sliding shaft (213) is slidingly connected to the return frame (11), and the sliding shaft (213) The sliding direction is vertical; A first vertical driving mechanism (212). The first vertical driving mechanism (212) is installed on the return frame (11). The output end of the first vertical driving mechanism (212) is connected to the sliding shaft (213) to drive the sliding of the sliding shaft (213). 4. The steel bar return-to-length mechanism according to claim 3, characterized in that the upper pressing assembly (21) further includes a slider (214), and the slider (214) is provided on the sliding shaft (213). ) on one end away from the upper pressure wheel (211), the return frame (11) is provided with a chute (111), and the slider (214) is slidingly connected in the chute (111). 5. The steel bar return-to-length mechanism according to claim 3, characterized in that the lower transmission assembly (22) includes: Transmission wheel (221). The transmission wheel (221) is rotatably connected to the return frame (11) through a transmission shaft (223) and is located directly below the upper pressure wheel (211). The transmission shaft (223) ) is also provided with a gear (224), and the gear (224), the transmission shaft (223) and the transmission wheel (221) can rotate synchronously; A second vertical driving mechanism (222). The second vertical driving mechanism (222) is provided on the return frame (11). The output end of the second vertical driving mechanism (222) is provided with a rack. (225), the rack (225) is engaged and connected with the gear (224), and the second vertical driving mechanism (222) drives the rack (225) up and down to drive the gear (224) Rotate, thereby driving the transmission wheel (221) to rotate. When the steel bar is clamped between the upper pressure wheel (211) and the transmission wheel (221), the transmission wheel (221) can drive all Describe the reciprocating motion of steel bars. 6. The steel bar return-to-length mechanism according to claim 5, characterized in that the lower transmission assembly (22) further includes a guide block (226), the guide block (226) is provided with a guide hole, and the guide block (226) is provided with a guide hole. The block (226) is provided on the return frame (11) and located below the rack (225). The bottom end of the rack (225) is slidably located in the guide hole of the guide block (226). . 7. The steel bar returning and sizing mechanism according to claim 5, characterized in that the sizing assembly (3) includes: Adjustment plate (31), the adjustment plate (31) is rotationally connected to the return frame (11) and is located above the rack (225). The adjustment plate (31) is provided with a first limiter (34) and the second limiter (35); when the adjustment plate (31) is in the first rotation position, the first limiter (34) is located directly above the rack (225), When the adjustment plate (31) is in the second rotation position, the second limiting member (35) is located directly above the rack (225), and the first limiting member (34) and the One end of the second limiting member (35) facing the rack (225) has a height difference; A second horizontal driving mechanism (32). The second horizontal driving mechanism (32) is rotatably installed on the return frame (11). The output end of the second horizontal driving mechanism (32) is connected to the adjusting plate (31). ) is hinged to drive the adjustment plate (31) to rotate; A third limiting member (33). The third limiting member (33) is connected to the return frame (11). When the rack (225) descends, it can stop against the third limiting member (33). 33) To limit the position. 8. The steel bar return-to-length mechanism according to claim 7, characterized in that a shock-absorbing pad (227) is provided at the top of the rack (225), and the shock-absorbing pad (227) is provided with three shock-absorbing pads. position, and the three shock absorbing positions respectively correspond to the first limiting member (34), the second limiting member (35) and the third limiting member (33). 9. The steel bar return-to-length mechanism according to claim 7, characterized in that the first limiter (34) and the second limiter (35) are on the adjustment plate (31). The limiting height is adjustable, and the limiting height of the third limiting member (33) on the return frame (11) is adjustable. 10. A hoop bending machine, characterized in that it includes a steel bar return and length-fixing mechanism according to any one of claims 1 to 9.