CN117208568A - Accurate pickup device of many specifications reinforcing bar - Google Patents

Abstract

The invention provides a precise multi-specification steel bar pickup device, which comprises: the movable storage bin comprises a plurality of storage spaces, and reinforcing steel bars with the same specification are placed in each storage space; the pick-up and delivery mechanism includes: a frame; the picking mechanism is used for picking up the steel bars with the target specification from the movable stock bin; the material receiving mechanism is used for buffering the steel bars picked up by the pick-up mechanism, and one end of the material receiving mechanism is a clamping position; the rubbing mechanism is used for rubbing the steel bars stacked on the receiving mechanism back and forth into single-layer arrangement; the positioning mechanism pushes the flattened steel bars to the clamping positions along the direction vertical to the axial direction of the steel bars, so that the steel bars are sequentially and tightly distributed from the clamping positions; the clamping mechanism clamps the reinforcing steel bars positioned at the clamping position on the material receiving mechanism; and the rolling mechanism is used for conveying the steel bars clamped by the clamping mechanism to processing equipment. The invention can realize the switching at any time of the picking processing of the reinforcing steel bars with different specifications and realize the accurate picking of the reinforcing steel bars with multiple specifications.

Description

Accurate pickup device of many specifications reinforcing bar

Technical Field

The invention relates to the technical field of steel bar machining, in particular to a multi-specification steel bar accurate pickup device.

Background

The raw materials of the reinforcing steel bars are generally whole bundles of incoming materials, the specification is phi 12-40 mm, and the length is 6-12 m, so that the reinforcing steel bars are required to be picked up according to the requirements in actual use and fed into a cutting device to be cut into the required length. When the steel bar is picked up, the steel bar is firstly placed in a raw material bin, and at present, three modes are adopted for picking up the steel bar:

first kind: traditional manual pickup feeding mode, operating personnel sort the reinforcing bars according to the specification, then send the reinforcing bars into cutting equipment and process the reinforcing bars according to the demand, and this mode machining efficiency is low, and is with high costs, and intensity of labour is big, needs 1 ~ 2 talents to accomplish.

Second kind: the existing steel bar picking mechanism or equipment mostly adopts a transverse single picking mode, when steel bars are required to be processed, the steel bars with the same specification are firstly placed on a storage bin, the storage bin and processing equipment have a certain height difference, the steel bars can slide one by one from the storage bin to the rolling mechanism of the processing equipment, the rolling mechanism sends the steel bars to the processing equipment, the invention can refer to China patent application number 201720577393.1, and the invention is named as a steel bar feeding device of a steel bar bending machine.

Third category: in the prior art, some equipment for processing reinforcing steel bars with different specifications is also available, and the processing of the reinforcing steel bars with different specifications can be switched at any time. As shown in fig. 1, in one production, when the steel bar 3 'is picked up, the steel bar needs to be lifted to a certain height by the magnet 2', one steel bar is clamped from the side by the clamping jaw 1 'or sucked by the magnet and is fed into the equipment, when the second steel bar is picked up, the electromagnet needs to suck the steel bar from the storage bin again, and the above actions are repeated, and the patent of the invention is referred to as 201210517918.4, and the invention is named as an automatic lifting steel bar feeding device and process in a steel bar processing production line, and the clamping jaw 1' of fig. 1 is set as a discharging mechanism in the patent. The pick-up mode has the advantages that the specifications of the reinforcing steel bars can be switched at any time, but the comprehensive working efficiency of the mode is lower when the reinforcing steel bars with the same specification are required to be processed in batches.

In actual production, the specifications and the number of the reinforcing steel bars to be processed are uncertain, so that the processing of the reinforcing steel bars with different specifications can be switched at any time, and the reinforcing steel bars with the same specifications are also required to be processed efficiently.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a multi-specification steel bar precise pick-up device.

According to one aspect of the invention, a multi-specification steel bar precise pickup device is provided, which comprises a movable storage bin and a pickup conveying mechanism, wherein the movable storage bin comprises a plurality of storage spaces, and each storage space is used for placing steel bars with the same specification; the pick-up and delivery mechanism includes:

a frame providing support for the pick-up and delivery mechanism;

the picking mechanism is fixed at the top of the frame and is used for picking up the steel bars with target specifications from the movable stock bin;

the material receiving mechanism is positioned below the picking mechanism and used for buffering the steel bars picked up by the picking mechanism, and one end of the material receiving mechanism is a clamping position;

the rubbing mechanism is positioned at one side of the material receiving mechanism and is used for rubbing the stacked steel bars on the material receiving mechanism back and forth into single-layer arrangement;

the positioning mechanism is positioned at one side of the receiving mechanism and far away from the clamping position, and pushes the rubbed steel bars to the clamping position along the direction vertical to the axial direction of the steel bars, so that the steel bars are sequentially and tightly distributed from the clamping position;

The clamping mechanism is fixed on the frame and positioned above the material receiving mechanism, and clamps the steel bars positioned at the clamping position on the material receiving mechanism;

and the rolling mechanism is fixed on the frame and is used for conveying the steel bars clamped by the clamping mechanism to processing equipment.

Optionally, the moving bin further includes:

the support frames are arranged below the bin spaces and used for supporting the bin spaces;

the bin guide rail is fixed on the support frame and positioned at the bottom of the movable bin, and the bin guide rail is arranged along the length direction perpendicular to the bin space;

the driving device is arranged at the bottom of the movable storage bin and drives the storage bin to move along the storage bin guide rail.

Optionally, the pick-up mechanism includes:

a first cylinder fixing plate fixed to the frame;

the first cylinder is fixed on the first cylinder fixing plate, and a first cylinder rod of the first cylinder extends downwards;

the lower end of the limiting rod penetrates through the first cylinder fixing plate, the upper end of the limiting rod is connected with a connecting plate, the connecting plate is fixed on the frame, a limiting ring is arranged on the limiting rod, and the limiting ring is used for adjusting the stroke of the first cylinder;

The second cushion pad is sleeved on the limiting rod and is close to the upper surface of the first cylinder fixing plate;

the guide rod fixing plate is connected to the tail end of the first cylinder rod, and the lower end of the limiting rod is fixed on the guide rod fixing plate;

the upper end of the guide rod is connected with the guide rod fixing plate, and the guide rod fixing plate can slide along the guide rod;

the electromagnet is arranged at the lower end of the guide rod and is used for sucking the reinforcing steel bars.

Optionally, the lower extreme of guide arm is connected the electro-magnet backup pad, the electro-magnet through articulated seat with the electro-magnet backup pad is connected, articulated seat includes the rotation axis of x direction and the rotation axis of y direction, articulated seat has the rotation degree of freedom of x direction and y direction.

Optionally, the receiving mechanism includes:

the clamping position is positioned at one end of the material receiving rod, and the reinforcing steel bars are arranged perpendicular to the axial direction of the material receiving rod;

the second cylinder is fixed on the frame, the tail end of a second cylinder rod of the second cylinder is connected with the middle part of the material receiving rod, and the expansion direction of the second cylinder rod is perpendicular to the axial direction of the material receiving rod;

the idler wheels are sleeved at two ends of the material receiving rod.

Optionally, the rubbing mechanism includes:

a bracket fixed on the frame;

the guide rail is fixed on the bracket and is arranged along the height direction of the rubbing mechanism;

the movable plate, one side of the said movable plate is fixed on slide block of the said guide rail;

the first servo motor-speed reducer combination and the second servo motor-speed reducer combination are both fixed on the movable plate, and the first servo motor-speed reducer combination is positioned below the second servo motor-speed reducer combination;

the first gear is connected with an output shaft of the second servo motor-speed reducer combination;

the second gear is connected with an output shaft of the first servo motor-speed reducer combination;

the first rack is arranged along the height direction of the rubbing mechanism, is fixed on the bracket and is matched with the first gear;

the third guide rail is arranged on the other side of the movable plate and is perpendicular to the guide rail, and a rack mounting plate is arranged on a sliding block of the third guide rail;

the second rack is fixed on the rack mounting plate and is perpendicular to the first rack, and the second rack is matched with the second gear;

The third cylinder is fixed on the rack mounting plate and is provided with a third cylinder rod which stretches and contracts along the height direction of the rubbing mechanism;

and the rubbing plate is arranged at the tail end of the third cylinder rod.

Optionally, a positioning column is arranged at the end part of the material receiving rod, which is close to the clamping position, and the positioning column is used for positioning the steel bars positioned at the clamping position; the positioning mechanism comprises:

the fixed seat is fixed on the frame;

the fourth air cylinder is fixed on the fixed seat and is positioned above the fixed seat, and the fourth air cylinder is provided with a fourth air cylinder rod which stretches and contracts along the axial direction perpendicular to the reinforcing steel bars;

the sixth guide rail is arranged on the lower surface of the fixed seat, and the length direction of the sixth guide rail is consistent with the expansion and contraction direction of the fourth cylinder rod;

one end of the positioning push plate is fixed on the sliding block of the sixth guide rail, and the other end of the positioning push plate is fixed at the tail end of the fourth cylinder rod; and the positioning push plate pushes the rubbed steel bars to the clamping position to squeeze the positioning column.

Optionally, the rolling mechanism includes:

a motor-reducer combination mounted on the frame;

a sprocket connected to an output shaft of the motor-speed reducer combination;

The driving conveying wheel is connected with the chain wheel through a chain;

two groups of first guide wheels are respectively arranged at two ends of the rolling mechanism in the moving direction of the steel bars, and each group of first guide wheels comprises two first guide wheels respectively positioned at two sides of the driving conveying wheel; a space for placing the reinforcing steel bars is formed between the two first guide wheels of each group, and the space plays a role in guiding the conveying of the reinforcing steel bars;

and the conveying channel is used for guiding the reinforcing steel bars into the conveying channel by rotating the driving conveying wheels.

Optionally, the pick-up conveying mechanism further includes a pushing mechanism, the pushing mechanism is located above the rolling mechanism, and the pushing mechanism includes:

a fifth cylinder mounted on the frame, the fifth cylinder having a fifth cylinder rod protruding downward;

the roller support is arranged at the tail end of the fifth cylinder rod;

the second guide rail is arranged on the frame, the second guide rail is arranged along the height direction of the frame, and the roller support is driven by the fifth air cylinder to move along the second guide rail;

the driven rolling wheel is arranged in the roller support, presses the steel bar after the roller support descends, and is matched with the driving conveying wheel to clamp and convey the steel bar;

The second guide wheel is arranged in the roller support and plays a role in guiding longitudinal conveying of the reinforcing steel bars.

Optionally, the pick-up conveying mechanism further includes a material blocking mechanism disposed above the material receiving mechanism, and the material blocking mechanism includes:

a sixth cylinder fixed to the frame, the sixth cylinder having a sixth cylinder rod protruding downward;

and the baffle is connected to the tail end of the sixth cylinder rod and stops the end part of the steel bar which is not clamped on the receiving mechanism.

Compared with the prior art, the invention has at least one of the following beneficial effects:

1. according to the multi-specification steel bar accurate pickup device provided by the invention, the movable storage bin comprises a plurality of storage spaces for placing steel bar raw materials with different specifications, when the steel bars with different specifications need to be switched in the process of processing the steel bars, the residual steel bars on the material receiving mechanism fall into the storage spaces corresponding to the steel bars with the original specifications, and the movable storage bin is moved, so that the storage spaces corresponding to the steel bars with the target specifications are moved to the lower part of the pickup mechanism for pickup, and the pickup processing of the steel bars with different specifications is switched at any time.

2. According to the multi-specification steel bar accurate pickup device provided by the invention, the batch efficient processing of the same-specification steel bars can be realized through the interaction among the movable stock bin, the material receiving mechanism, the rubbing mechanism, the positioning mechanism, the clamping mechanism, the rolling mechanism and the like, and the accurate pickup of the multi-specification steel bars can be realized.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

fig. 1 is a schematic structural diagram of an automatic feeding device in the background art, wherein 1' is a clamping jaw, 2' is a magnet, and 3' is a reinforcing steel bar;

fig. 2 is a schematic structural diagram of a precise multi-specification steel bar pick-up device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a pick-up and delivery mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a movable silo according to an embodiment of the invention;

FIG. 5 is a schematic diagram of a movable silo according to an embodiment of the invention;

FIG. 6 is a schematic diagram of a pick-up mechanism according to an embodiment of the present invention;

FIG. 7 is a schematic view illustrating a hinge seat according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a receiving mechanism according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a rubbing mechanism according to an embodiment of the invention;

FIG. 10 is a schematic diagram of a positioning mechanism according to an embodiment of the invention;

FIG. 11 is a schematic view of a clamping mechanism according to an embodiment of the invention;

FIG. 12 is a schematic diagram of a rolling mechanism according to an embodiment of the present invention;

FIG. 13 is a schematic view of a pressing mechanism according to an embodiment of the present invention;

FIG. 14 is a schematic view of an arrangement position of a dam mechanism according to an embodiment of the present invention;

FIG. 15 is a schematic view of a dam mechanism according to an embodiment of the present invention;

fig. 16 is a schematic view illustrating a process of picking up a reinforcing bar according to an embodiment of the present invention;

in the figure: 100-moving a bin, 101-bin space, 102-driving devices and 103-bin guide rails; 200-a pick-up conveying mechanism; 300-reinforcing steel bars;

201-positioning mechanism, 20101-positioning push plate, 20102-fourth cylinder fixing plate, 20103-fourth cylinder, 20104-fixing seat and 20105-sixth guide rail;

202-rubbing mechanism, 20201-first servo motor-speed reducer combination, 20202-second servo motor-speed reducer combination, 20203-bracket, 20204-first gear, 20205-first rack, 20206-fourth guide rail, 20207-fifth guide rail, 20208-movable plate, 20209-third guide rail, 20210-rack mounting plate, 20211-third cylinder, 20212-rubbing plate, 20213-second gear, 20214-second rack;

203-a clamping mechanism, 20301-a linear module, 20302-an electric cylinder, 20303-an electric cylinder connecting plate, 20304-an electric cylinder base plate, 20305-an electric cylinder over-top zipper, 20306-a first cushion pad, 20307-a clamping jaw assembly;

204-picking mechanism, 20401-connecting plate, 20402-limiting ring, 20403-first cylinder, 20404-second buffer pad, 20405-linear bearing, 20406-side pull cylinder floating joint, 20407-side pull cylinder, 20408-first cylinder floating joint, 20409-guide rod fixing plate, 20410-guide rod, 20411-electromagnet supporting plate, 20412-hinging seat, 20413-electromagnet, 20414-first cylinder fixing plate, 20415-limiting rod;

205-a pressing mechanism, 20501-a fifth cylinder, 20502-a roller support, 20503-a pin shaft, 20504-a limiting plate, 20505-a second guide wheel, 20506-a driven roller;

206-a first rail;

207-a second rail;

208-rolling mechanism, 20801-motor-speed reducer combination, 20802-chain, 20803-chain wheel, 20804-first guide wheel, 20805-driving conveying wheel, 20806-conveying channel, 20807-rolling wheel;

209-receiving mechanism, 20901-positioning column, 20202-receiving rod, 20803-second cylinder fixing plate, 20904-second cylinder, 20905-roller;

210-a material blocking mechanism, 21001-a baffle plate, 21002-a sixth cylinder;

211-frame.

Detailed Description

The present application will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present application, but are not intended to limit the application in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present application.

It should be noted that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may include one or more of the feature, either explicitly or implicitly. Moreover, the terms "first," "second," and the like, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in other sequences than those illustrated or otherwise described herein.

Furthermore, the term "rebar" refers to rebar stock, i.e., rebar to be processed.

Referring to fig. 2 to 4, an embodiment of the present invention provides a multi-specification steel bar precise pickup device, which includes a moving magazine 100 and a pickup conveyor 200, the moving magazine 100 includes a plurality of bins 101, and each bin 101 is placed with a steel bar 300 of the same specification; the pick-up and delivery mechanism 200 includes a frame 211, a pick-up mechanism 204, a receiving mechanism 209, a rubbing mechanism 202, a positioning mechanism 201, a gripping mechanism 203, and a rolling mechanism 208, wherein: the frame 211 provides support for the pick-and-delivery mechanism 200; the pick-up mechanism 204 is fixed on top of the frame 211, and the pick-up mechanism 204 is used for picking up the steel bars 300 with target specifications from the movable stock bin 100; the receiving mechanism 209 is located below the pick-up mechanism 204, the receiving mechanism 209 is used for buffering the steel bars 300 picked up by the pick-up mechanism 204, and one end of the receiving mechanism 209 is a clamping position; the rubbing mechanism 202 is positioned at one side of the material receiving mechanism 209, and the rubbing mechanism 202 rubs the steel bars 300 stacked on the material receiving mechanism 209 back and forth into single-layer arrangement; the positioning mechanism 201 is positioned at one side of the receiving mechanism 209 and is far away from the clamping position, and the positioning mechanism 201 pushes the flattened reinforcing steel bars 300 to the clamping position along the direction vertical to the axial direction of the reinforcing steel bars, so that the reinforcing steel bars 300 are sequentially and tightly distributed from the clamping position; the clamping mechanism 203 is fixed on the frame 211 and is positioned above the material receiving mechanism 209, and the clamping mechanism 203 clamps the steel bars 300 positioned at the clamping position on the material receiving mechanism 209; the rolling mechanism 208 is fixed on the frame 211, and the rolling mechanism 208 is used for conveying the steel bars 300 clamped by the clamping mechanism 203 to processing equipment.

In the embodiment of the invention, the movable storage bin 100 comprises a plurality of storage bins 101 for placing reinforcing steel bar raw materials with different specifications, when the reinforcing steel bars with different specifications need to be switched in the process of processing the reinforcing steel bars, the residual reinforcing steel bars 300 on the receiving mechanism 209 fall into the storage bins 101 corresponding to the reinforcing steel bars with the original specifications, the movable storage bin 100 is moved, and the storage bins 101 corresponding to the reinforcing steel bars with the target specifications are moved to the position below the picking mechanism 204 for picking, so that the picking processing of the reinforcing steel bars with different specifications can be switched at any time. Through the interaction among the movable stock bin 100, the material receiving mechanism 209, the rubbing mechanism 202, the positioning mechanism 201, the clamping mechanism 203, the rolling mechanism 208 and the like, the batch efficient processing of the reinforcing steel bars with the same specification can be realized, and the precise picking of the reinforcing steel bars with multiple specifications can be realized.

The steel bar specification is generally: the movable stock bin 100 is 6-12 m long and has a diameter phi of 12-phi 40mm, and is provided with a plurality of parallel stock bins 101 for simultaneously placing reinforcing steel bars of different specifications to be processed, wherein each stock bin 101 can be used for placing reinforcing steel bar raw materials of the same specification, and the movable stock bin 100 in fig. 4 comprises 6 stock bins 101, and different stock bins 101 can be used for placing reinforcing steel bar raw materials of the same specification or different specifications. Referring to fig. 4 and 5, the movable storage bin 100 further includes a support frame, a storage bin guide rail 103 and a driving device 102, wherein the support frame is disposed below the plurality of storage bins 101, the support frame is used for supporting the plurality of storage bins 101, and the support frame is configured to be movable along a preset track under the driving of the driving mechanism; the bin guide rail 103 is fixed on the support frame and is positioned at the bottom of the movable bin 100, and the bin guide rail 103 is arranged along the length direction perpendicular to the bin space 101; the driving device 102 is arranged at the bottom of the movable storage bin 100, and the driving device 102 drives the storage bin 101 to move along the storage bin guide rail 103.

Referring to fig. 6, the pickup mechanism 204 includes a first cylinder fixing plate 20414, a first cylinder 20403, a stopper rod 20415, a second cushion 20404, a guide rod fixing plate 20409, a guide rod 20410, an electromagnet 20413, and the like, the first cylinder fixing plate 20414 is fixed on the frame 211, specifically, a first guide rail 206 is provided on the lower surface of the cross beam of the frame 211, and the first cylinder fixing plate 20414 is mounted on the first guide rail 206; the first cylinder 20403 is fixed to the first cylinder fixing plate 20414, and a first cylinder rod of the first cylinder 20403 protrudes downward; the lower end of the limiting rod 20415 passes through the first cylinder fixing plate 20414, the upper end of the limiting rod 20415 is connected with a connecting plate 20401, the connecting plate 20401 is fixed on the frame 211, a limiting ring 20402 is arranged on the limiting rod 20415, and the limiting ring 20402 is used for adjusting the stroke of the first cylinder 20403; the second cushion pad 20404 is sleeved on the limit rod 20415, the second cushion pad 20404 is close to the upper surface of the first cylinder fixing plate 20414, a linear bearing 20405 is arranged on the first cylinder fixing plate 20414, the limit rod 20415 penetrates through the linear bearing 20405, the linear bearing 20405 plays a role in guiding the movement of the limit rod 20415, and the second cushion pad 20404 can prevent the limit ring 20402 from impacting the linear bearing 20405; the guide rod fixing plate 20409 is connected to the tail end of the first cylinder rod through a first cylinder floating joint 20408, the guide rod fixing plate 20409 is pushed to move downwards when the first cylinder rod moves downwards, and the lower end of the limiting rod 20415 is fixed on the guide rod fixing plate 20409; the upper end of the guide rod 20410 is connected with a guide rod fixing plate 20409, and the guide rod fixing plate 20409 can move up and down along the guide rod 20410; in order to improve the connection reliability and ensure smooth and steady movement, preferably, the number of the limiting rods 20415 and the guide rods 20410 is two, the two limiting rods 20415 are symmetrically arranged at two sides of the first cylinder 20403, and the two guide rods 20410 are symmetrically arranged on the guide rod fixing plate 20409; an electromagnet 20413 is provided at the lower end of the guide rod 20410, and the electromagnet 20413 is used for sucking up the reinforcing steel bars 300.

In the above embodiment, the side of the cylinder fixing plate is provided with the side pulling cylinder 20407, the side pulling cylinder 20407 is fixed on the cylinder fixing plate through the side pulling cylinder floating joint 20406, so that the side pulling cylinder 20407 is fixed on the frame 211, and the side pulling cylinder rod of the side pulling cylinder 20407 pushes the pickup mechanism 204 to move along the first guide rail 206, so that the interference between the steel bar 300 and the pickup mechanism 204 when the clamping mechanism 203 clamps the steel bar 300 can be avoided. When the first cylinder rod of the first cylinder 20403 moves downwards, the limiting rod 20415 is driven to move together, when the limiting ring 20402 contacts the second cushion 20404, the first cylinder rod stops moving, the stroke of pushing the first cylinder rod downwards can be adjusted through different positions of the limiting ring 20402 on the limiting rod 20415, accordingly, the electromagnet 20413 is adjusted to an initial position of the movable storage bin 100, the guide rod 20410 penetrates through the guide rod 20410 fixing plate 20409, the guide rod fixing plate 20409 can slide along the guide rod 20410, when the storage bin 101 of the movable storage bin 100 is full, the first cylinder 20403 of the pick-up mechanism 204 moves downwards to enable the electromagnet 20413 to contact the uppermost layer of steel bars 300, but at the moment, the first cylinder 20403 does not stop, the guide rod fixing plate 20409 is still pushed to move downwards continuously, at the moment, the electromagnet 20413 and the guide rod 20410 do not move downwards again, and the guide rod fixing plate 20409 continues to move downwards along the guide rod 20410. When the stop collar 20402 is moved into contact with the second cushion 20404, and when the last layer of rebar 300 is left in the moving magazine 100, the first cylinder 20403 will move until the stop collar 20402 is in contact with the second cushion 20404, and the electromagnet 20413 will still be able to contact the rebar 300 surface and hold the rebar 300.

In some embodiments, the lower end of the guide rod 20410 is connected to the electromagnet support plate 20411, and the electromagnet 20413 is connected to the electromagnet support plate 20411 by a hinged mount 20412, as shown in fig. 7. The hinge base 20412 includes an x-direction rotation axis and a y-direction rotation axis, so that the hinge base 20412 has 2 rotational degrees of freedom in the x-direction and the y-direction, so that the electromagnet 20413 can always maintain effective contact with the reinforcing steel bar 300.

In the above embodiment, when the steel bar is picked up, the moving bin 100 is moved to the target position according to the requirement of the processed steel bar specification, so that the bin 101 corresponding to the steel bar of the target specification is located below the pick-up mechanism 204, and the positioning manner may be, but is not limited to, moving bin servo positioning, suction mechanism visual positioning, and the like. In addition to the above-mentioned pick-up mode of electromagnet suction, in other embodiments, a pick-up mode of clamping by a clamping jaw may be adopted, which is not particularly limited in the embodiment of the present invention.

Referring to fig. 8, the receiving mechanism 209 includes a receiving rod 20202, a second cylinder 20104, and a roller 20905, the gripping position is located at one end of the receiving rod 20202, and the reinforcing steel bar 300 is placed perpendicular to the axial direction of the receiving rod 20202; the second air cylinder 20304 is fixed on the frame 211 through a second air cylinder fixing plate 20203, the end of a second air cylinder rod of the second air cylinder 20304 is connected with the middle part of the material receiving rod 20202, and the expansion and contraction direction of the second air cylinder rod is perpendicular to the axial direction of the material receiving rod 20202; the whole receiving mechanism 209 is fixed on the frame 211 through the second cylinder fixing plate 20903, the rollers 20905 are sleeved on two ends of the receiving rod 20202, and the rollers 20905 can roll or slide on the frame 211, so that stable and smooth movement of the receiving rod 20202 can be realized. It should be noted that, a slide block, a guide sleeve, or the like is provided at both ends of the receiving mechanism 209, and the stable and smooth movement of the receiving rod 20202 can be realized as well.

When the pick-up mechanism 204 picks up the steel bar, the steel bar 300 is sucked up by the electromagnet 20413 of the pick-up mechanism 204 and lifted to a certain height, and at this time, the cylinder rod of the second cylinder 20904 extends to push the receiving rod 20202 to move to the target position, and at this time, the electromagnet 20413 is powered off, and the steel bar 300 falls onto the receiving rod 20202.

When it is necessary to switch between different specifications of bars during the process of processing the bars, the bin 101 of the target specification of bars is moved to below the pick-up mechanism 204 to pick up the bars 300. If there are more reinforcing bars of the current specification on the receiving bar 20902, and when reinforcing bars of other specifications need to be replaced, the second air cylinder 20304 of the receiving mechanism 209 drives the receiving bar 20202 to retract, so that the remaining reinforcing bars 300 fall into the bins 101 corresponding to the reinforcing bars of the original specification, the moving bin 100 is moved again, and the bins 101 corresponding to the reinforcing bars of the target specification are moved to the position below the pick-up mechanism 204 to be picked up, so that the picking-up processing of reinforcing bars of different specifications can be switched at any time.

In the above embodiment, when the stacking phenomenon occurs in the case that the reinforcing bar 300 falls on the receiving rod 20202, the flattening process is required by the flattening mechanism 202. Referring to fig. 9, the rubbing mechanism 202 includes a bracket 20203, a guide rail, a movable plate 20208, a first servo motor-speed reducer combination 20201, a second servo motor-speed reducer combination 20202, a first gear 20204, a second gear 20213, a first rack 20205, a third guide rail 20209, a second rack 20214, a third cylinder 20211, a rubbing plate 20212, and the like, the bracket 20203 being fixed to the frame 211; the guide rail is fixed on the bracket 20203 and is arranged along the height direction of the rubbing mechanism 202; one side of the movable plate 20208 is fixed on the slide block of the guide rail; to improve the connection stability and the movement stability of the movable plate 20208, preferably, the number of the guide rails is two, and the two guide rails are arranged in parallel, as shown in a fourth guide rail 20206 near the first rack 20205 and a fifth guide rail 20207 at the end of the movable plate 20208 in fig. 9; the first servo motor-speed reducer combination 20201 and the second servo motor-speed reducer combination 20202 are both fixed on the movable plate 20208, and the first servo motor-speed reducer combination 20201 is located below the second servo motor-speed reducer combination 20202; the first gear 20204 is connected to the output shaft of the second servomotor-speed reducer combination 20202; the second gear 20213 is connected to the output shaft of the first servomotor-speed reducer combination 20201; the first rack 20205 is arranged along the height direction of the rubbing mechanism 202, and the first rack 20205 is fixed on the bracket 20203 and is matched with the first gear 20204; the third guide rail 20209 is arranged on the other side of the movable plate 20208, the third guide rail 20209 is vertical to the guide rail, and a rack mounting plate 20210 is arranged on a sliding block of the third guide rail 20209; a second rack 20214 is fixed on the rack mounting plate 20210, the second rack 20214 is perpendicular to the first rack 20205, and the second rack 20214 is matched with the second gear 20213; a third air cylinder 20211 is fixed to the rack mounting plate 20210, the third air cylinder 20211 having a third air cylinder rod that expands and contracts in the height direction of the rubbing mechanism 202; a rubbing plate 20212 is installed at the end of the third cylinder rod, and the rubbing plate 20212 reciprocally rubs the stacked reinforcing bars 300 into a single-layered arrangement.

In some embodiments, the rubbing plate 20212 includes a rubbing part and a connection part, which are perpendicular to each other, the rubbing part having a thickness direction consistent with an axial direction of the reinforcing steel bar 300, the rubbing part being provided at a middle portion of one side of the connection part, and the other side of the connection part being connected to an end of the third air cylinder 20211. Because air is compressible, the rubbing plate 20212 is arranged at the tail end of the third cylinder rod and can be used as buffer, so that the servo motor alarm caused by excessive instant resistance when pressing down and rubbing down is prevented.

In the above embodiment, the thickness direction of the rubbing plate 20212 coincides with the axial direction of the reinforcing steel bar; because the reinforcing steel bars are ribbed, if the rubbing plate 20212 is tightly attached to the surface of the reinforcing steel bars, a scratch is easy to occur when the reinforcing steel bars are positioned and pushed, in order to prevent secondary stacking of the rubbed reinforcing steel bars, the rubbing plate 20212 keeps a preset distance from the upper surface of the reinforcing steel bars after rubbing the reinforcing steel bars so as to prevent secondary stacking of the reinforcing steel bars, and the reinforcing steel bars positioned at the clamping position on the material receiving mechanism 209 are exposed. Preferably, the preset distance is not more than half of the diameter of the steel bars, and is generally 2-3 mm, so that secondary stacking of the steel bars caused by the action of the steel bar positioning mechanism can be effectively prevented, and the second steel bar can be prevented from being driven to act when the first steel bar is clamped.

In the above embodiment, the up-down and left-right movements of the rubbing plate 20212 are all servo-controlled by the first servo motor-speed reducer combination 20201 and the second servo motor-speed reducer combination 20202, so that the use of steel bars with different specifications and sizes can be satisfied.

By using the rubbing mechanism, the rubbing translation is as follows: the third cylinder 20211 is ventilated, the third cylinder rod drives the rubbing plate 20212 to extend downwards, the second servo motor-speed reducer combination 20202 drives the first gear 20204 to rotate, so that parts mounted on the movable plate 20208 slide downwards along the guide rail, the rubbing plate 20212 is in contact with the surface of the steel bar 300 and has certain pressure, meanwhile, the first servo motor-speed reducer combination 20201 rotates to drive the second gear 20213 to rotate, the rack mounting plate 20210 drives the third cylinder 20211 and the rubbing plate 20212 to move to a designated position, and when the rubbing starts, the servo motor of the first servo motor-speed reducer combination 20201 rotates forwards and reversely to drive the rubbing plate 20212 to do reciprocating motion, so that the stacked steel bars 300 are subjected to downward pressure and also subjected to reciprocating lateral extrusion force, and finally the steel bars form a single-layer arrangement.

In the embodiment of the present invention, the rubbing mechanism 202 may adjust the steel bars 300 stacked on the receiving mechanism 209 to be a single layer by means of reciprocating left and right flattening, multiple vertical pressing, hammering, etc., so as to facilitate the clamping by the clamping mechanism 203, and in other embodiments, a rubbing mechanism that rubs by means of vibration may also be used.

With continued reference to fig. 8, a positioning column 20901 is disposed on the end portion of the receiving rod 20902 near the clamping position, the positioning column 20901 is used for positioning the reinforcing steel bar 300 located at the clamping position, and the positioning column 20901 may be fixed on the receiving rod 20902 by a threaded connection or welding manner; referring to fig. 10, the positioning mechanism 201 includes a fixing base 20104, a fourth cylinder 20103, a sixth guide rail 20105, a positioning push plate 20101, and the like, and the fixing base 20104 is fixed on the frame 211; the fourth cylinder 20103 is fixed on the fixed seat 20104 through a fourth cylinder fixing plate 20102, the fourth cylinder 20103 is positioned above the fixed seat 20104, and the fourth cylinder 20103 is provided with a fourth cylinder rod which stretches and contracts along the axial direction perpendicular to the steel bar 300; the sixth guide rail 20105 is arranged on the lower surface of the fixed seat 20104, and the length direction of the sixth guide rail 20105 is consistent with the expansion and contraction direction of the fourth cylinder rod; one end of the positioning push plate 20101 is fixed on a sliding block of the sixth guide rail 20105, and the other end of the positioning push plate is fixed at the tail end of the fourth cylinder rod; the positioning push plate 20101 pushes the flattened reinforcing steel bar 300 to the clamping position to squeeze the positioning column 20901.

In the embodiment of the invention, the positioning mechanism 201 pushes the steel bar 300 to the target clamping position, and the positioning mechanism 201 is matched with the rubbing mechanism 202, so that the secondary stacking of the steel bar 300 in the positioning process can be effectively prevented.

Referring to fig. 11, the gripping mechanism 203 is secured to the frame 211 by a linear module 20301, the linear module 20301 being disposed in an axial direction perpendicular to the rebar 300 placed over the receiving mechanism 209. In some embodiments, the gripping mechanism 203 includes an electric cylinder 20302, an electric cylinder connecting plate 20303, an electric cylinder backing plate 20304, an electric cylinder over-top zipper 20305, a first cushion 20306, and a jaw assembly 20307, the electric cylinder 20302 being connected to the linear module 20301 by the electric cylinder connecting plate 20303, the electric cylinder backing plate 20304 being disposed between the electric cylinder 20302 and the electric cylinder connecting plate 20303, an electric cylinder rod of the electric cylinder 20302 extending downward, the jaw assembly 20307 being located at an end of the electric cylinder rod 20305, the electric cylinder over-top zipper 20305 and the first cushion 20306 being disposed on the electric cylinder rod. Gripping of the target rebar can be accomplished by the gripping mechanism 203 and placing the rebar 300 in the roll-off area. Specifically, when the positioning of the rebar 300 is completed, the jaw assembly 20307 on the clamping mechanism 203 is moved to a target position, clamping and transporting the rebar 300 to the roll-off position. Because the positioned reinforcing bars 300 are all close to the positioning posts 20901 of the receiving rod 20202, the clamping positions are relatively fixed, and the movement distance of the clamping mechanism 203 is the shortest.

Referring to fig. 12, the rolling mechanism 208 includes two sets of first guide wheels 20804, a motor-speed reducer combination 20801, a sprocket 20803, a driving conveying wheel 20805, a conveying channel 20806, and the like, and the motor-speed reducer combination 20801 is mounted on the frame 211; sprocket 20803 is connected to the output shaft of motor-reducer assembly 20801; the driving conveying wheel 20805 is connected with the chain wheel 20803 through a chain 20802; the driving conveying wheel 20805 rotates to guide the reinforcing steel bars 300 into the conveying channel 20806, the conveying channel 20806 is communicated with processing equipment, and the conveying channel 20806 conveys the reinforcing steel bars to the processing equipment through rotation of the rolling conveying wheel 20807. Two groups of first guide wheels 20804 are respectively arranged at two ends of the rolling mechanism in the moving direction of the steel bars 300, and each group of first guide wheels 20804 comprises two first guide wheels 20804 respectively positioned at two sides of the driving conveying wheel 20805; a space for placing the steel bars 300 clamped by the clamping mechanism 203 is formed between the two first guide wheels 20804 of each group, the first guide wheels 20804 limit the movement of the steel bars 300 in a certain area, prevent the steel bars 300 from separating from the active conveying wheels 20805, and guide the steel bar conveying.

In the embodiment of the present invention, the steel bar 300 is clamped and placed between the two first guide wheels 20804 of the rolling mechanism 208, and the motor-reducer combination 20801 of the rolling mechanism 208 drives the sprocket 20803, so as to drive the driving conveying wheel 20805 to convey the steel bar 300 into the conveying channel 20806 to enter the processing equipment. The first guide wheels 20804 are rotatably arranged, and by adjusting the distance between each group of the first guide wheels 20804, the steel bars 300 can be accurately guided into the conveying channel 20806, specifically, the distance between the two first guide wheels 20804 is smaller than the width of the driving conveying wheel 20805, and the lower surface of the first guide wheels 20804 is lower than the surface of the driving conveying wheel 20805, so that the steel bars 300 can be prevented from being blocked into other areas to cause incapacitation. In addition, the distance between the two first guide wheels 20804 is smaller than the width of the conveying channel 20806, so that the steel bars 300 can be accurately conveyed into the conveying channel 20806.

In some embodiments, the pick-up and delivery mechanism 200 further includes a hold-down mechanism 205, the hold-down mechanism 205 being located above the rolling mechanism, referring to fig. 13, the hold-down mechanism 205 includes a fifth cylinder 20501, a roller mount 20502, a second rail 207, a driven roller 20506, a second guide wheel 20505, etc., the fifth cylinder 20501 being mounted to the frame 211, the fifth cylinder 20501 having a fifth cylinder rod extending downward; the roller support 20502 is arranged at the tail end of the fifth cylinder rod; the second guide rails 207 are arranged on the frame 211, the second guide rails 207 are arranged along the height direction of the frame 211, the roller supports 20502 are connected to the two second guide rails 207, and the roller supports 20502 are driven by the fifth air cylinder 20501 to move along the second guide rails 207, so that the pressing mechanism 205 moves along the second guide rails 207; the driven rolling wheel 20506 is arranged in the roller support 20502, the second guide wheel 20505 and the driven rolling wheel are connected to the roller support 20502 through a pin shaft 20503, a limiting plate 20504 for limiting the axial movement of the pin shaft 20503 is arranged at the end part of the pin shaft 20503, and the driven rolling wheel 20506 presses the steel bar 300 after the roller support 20502 descends and is matched with the driving conveying wheel 20805 to clamp and convey the steel bar 300; the second guide wheels 20505 are provided in the roller holders 20502 to guide the longitudinal transportation of the reinforcing bars 300.

In the embodiment of the present invention, the pressing mechanism 205 is located above the rolling position, after the steel bar 300 is clamped, the steel bar 300 is placed between two first guide wheels 20804 of each group of the rolling mechanism 208, and when the steel bar 300 is clamped and conveyed below the pressing mechanism 205, the pressing mechanism 205 presses the steel bar 300, and specifically, the fifth cylinder 20501 of the pressing mechanism 205 acts, the driven rolling wheel 20506 presses the steel bar 300 and cooperates with the driving conveying wheel 20805 to clamp and convey the steel bar 300, the driving conveying wheel 20805 is mounted on the frame 211, and the driving conveying wheel 20805 drives the steel bar 300 to be conveyed to the next station or processing equipment together.

In the above embodiment, the rolling mechanism 208 is used to clamp and roll the steel bars 300 up and down to the processing equipment or production line. In other embodiments, other modes such as left and right pinch rolling may be employed as long as the same function as described above is achieved.

When the gripping mechanism 203 starts to grip the first reinforcing bar 300 (i.e., the reinforcing bar 300 at the gripping position), if the remaining reinforcing bars 300 on the receiving bar 20202 move in the conveying direction, the following results will be obtained: on the one hand, the moved reinforcing steel bars 300 cannot enter the conveying channel 20806 after being clamped, and cannot run according to a set route; on the other hand, when the number of the reinforcing bars 300 of the current specification is large but the types need to be switched, the material receiving rod 20202 is retracted to put the remaining reinforcing bars 300 back into the raw material bin, but the reinforcing bars 300 may be beyond the edges of the bin due to the forward movement of the reinforcing bars 300, so that the reinforcing bars 300 cannot enter the bin. To solve this problem, the pick-up and delivery mechanism 200 further includes a dam mechanism 210 disposed above the receiving mechanism 209, the dam mechanism 210 being mounted on a frame 211 above the receiving bar 20202, the specific location of which is shown in fig. 14. Referring to fig. 15, the dam mechanism 210 includes a sixth cylinder 21002 and a baffle 21001, the sixth cylinder 21002 being fixed to the frame 211, the sixth cylinder 21002 having a sixth cylinder rod extending downward; a baffle 21001 is connected to the end of the sixth cylinder rod, the baffle 21001 blocking the end of the steel bar 300 which is not clamped on the receiving mechanism 209. When the steel bar 300 starts to be conveyed, the sixth cylinder rod of the stop mechanism 210 extends, and the baffle 21001 can stop the end part of the receiving rod 20202, which is not clamped with the steel bar 300, so that the conveyed steel bar 300 drives the rest steel bars 300 to longitudinally move towards the conveying direction when the steel bar 300 starts to be conveyed.

Referring to fig. 16, the process of picking up the reinforcement bar using the above-mentioned multi-specification reinforcement bar precise picking up device is as follows: when the steel bars 300 with different specifications are placed in different bins 101 of the movable storage bin 100, and the steel bars with different specifications need to be switched, the movable storage bin 100 moves to a target position, the remaining steel bars 300 on the receiving mechanism 209 drop into the bins 101 corresponding to the steel bars with the original specifications, the bins 101 corresponding to the steel bars with the target specifications move to the lower part of the pick-up mechanism 204, the pick-up mechanism 204 sucks the steel bars 300 with the target specifications, the steel bars 300 are placed in the receiving mechanism 209, the rubbing mechanism 202 adjusts the steel bars 300 to be single-layer and prevents secondary stacking, the positioning mechanism 201 positions the steel bars 300, the clamping mechanism 203 grabs the steel bars 300 and places the steel bars 300 in the rolling mechanism 208, and the rolling mechanism 208 conveys the steel bars 300 to processing equipment.

According to the multi-specification steel bar accurate pickup device provided by the embodiment of the invention, through the movable stock bin and the pickup conveying mechanism, steel bars with different specifications can be switched at will during pickup, and the steel bars with different specifications can be picked and conveyed according to a preset program. Through the interaction among the movable stock bin, the material receiving mechanism, the rubbing mechanism, the positioning mechanism, the clamping mechanism, the rolling mechanism and the like, the steel bars with the same specification can be processed in batches and efficiently, and the steel bars with different specifications can be picked up accurately.

The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention. The above-described preferred features may be used in any combination without collision.

Claims (10)

1. The multi-specification steel bar precise pickup device is characterized by comprising a movable storage bin and a pickup conveying mechanism, wherein the movable storage bin comprises a plurality of storage spaces, and steel bars with the same specification are placed in each storage space; the pick-up and delivery mechanism includes:

a frame providing support for the pick-up and delivery mechanism;

the picking mechanism is fixed at the top of the frame and is used for picking up the steel bars with target specifications from the movable stock bin;

the material receiving mechanism is positioned below the picking mechanism and used for buffering the steel bars picked up by the picking mechanism, and one end of the material receiving mechanism is a clamping position;

the rubbing mechanism is positioned at one side of the material receiving mechanism and is used for rubbing the stacked steel bars on the material receiving mechanism back and forth into single-layer arrangement;

The positioning mechanism is positioned at one side of the receiving mechanism and far away from the clamping position, and pushes the rubbed steel bars to the clamping position along the direction vertical to the axial direction of the steel bars, so that the steel bars are sequentially and tightly distributed from the clamping position;

the clamping mechanism is fixed on the frame and positioned above the material receiving mechanism, and clamps the steel bars positioned at the clamping position on the material receiving mechanism;

and the rolling mechanism is fixed on the frame and is used for conveying the steel bars clamped by the clamping mechanism to processing equipment.

2. The multi-gauge rebar accurate pickup device of claim 1, wherein the moving bin further comprises:

the support frames are arranged below the bin spaces and used for supporting the bin spaces;

the bin guide rail is fixed on the support frame and positioned at the bottom of the movable bin, and the bin guide rail is arranged along the length direction perpendicular to the bin space;

the driving device is arranged at the bottom of the movable storage bin and drives the storage bin to move along the storage bin guide rail.

3. The multi-gauge rebar accurate pickup device of claim 1, wherein the pickup mechanism comprises:

A first cylinder fixing plate fixed to the frame;

the first cylinder is fixed on the first cylinder fixing plate, and a first cylinder rod of the first cylinder extends downwards;

the lower end of the limiting rod penetrates through the first cylinder fixing plate, the upper end of the limiting rod is connected with a connecting plate, the connecting plate is fixed on the frame, a limiting ring is arranged on the limiting rod, and the limiting ring is used for adjusting the stroke of the first cylinder;

the second cushion pad is sleeved on the limiting rod and is close to the upper surface of the first cylinder fixing plate;

the guide rod fixing plate is connected to the tail end of the first cylinder rod, and the lower end of the limiting rod is fixed on the guide rod fixing plate;

the upper end of the guide rod is connected with the guide rod fixing plate, and the guide rod fixing plate can slide along the guide rod;

the electromagnet is arranged at the lower end of the guide rod and is used for sucking the reinforcing steel bars.

4. The multi-specification bar precise picking device according to claim 3, wherein the lower end of the guide rod is connected with an electromagnet support plate, the electromagnet is connected with the electromagnet support plate through a hinge seat, the hinge seat comprises a rotation axis in the x direction and a rotation axis in the y direction, and the hinge seat has a rotation degree of freedom in the x direction and the y direction.

5. The precise multi-specification steel bar pickup device according to claim 1, wherein the receiving mechanism comprises:

the clamping position is positioned at one end of the material receiving rod, and the reinforcing steel bars are arranged perpendicular to the axial direction of the material receiving rod;

the second cylinder is fixed on the frame, the tail end of a second cylinder rod of the second cylinder is connected with the middle part of the material receiving rod, and the expansion direction of the second cylinder rod is perpendicular to the axial direction of the material receiving rod;

the idler wheels are sleeved at two ends of the material receiving rod.

6. The multi-gauge rebar accurate pickup device of claim 1, wherein the rubbing mechanism comprises:

a bracket fixed on the frame;

the guide rail is fixed on the bracket and is arranged along the height direction of the rubbing mechanism;

the movable plate, one side of the said movable plate is fixed on slide block of the said guide rail;

the first servo motor-speed reducer combination and the second servo motor-speed reducer combination are both fixed on the movable plate, and the first servo motor-speed reducer combination is positioned below the second servo motor-speed reducer combination;

the first gear is connected with an output shaft of the second servo motor-speed reducer combination;

The second gear is connected with an output shaft of the first servo motor-speed reducer combination;

the first rack is arranged along the height direction of the rubbing mechanism, is fixed on the bracket and is matched with the first gear;

the third guide rail is arranged on the other side of the movable plate and is perpendicular to the guide rail, and a rack mounting plate is arranged on a sliding block of the third guide rail;

the second rack is fixed on the rack mounting plate and is perpendicular to the first rack, and the second rack is matched with the second gear;

the third cylinder is fixed on the rack mounting plate and is provided with a third cylinder rod which stretches and contracts along the height direction of the rubbing mechanism;

and the rubbing plate is arranged at the tail end of the third cylinder rod.

7. The multi-specification steel bar precise pickup device according to claim 5, wherein a positioning column is arranged at the end part of the material receiving rod, which is close to the clamping position, and is used for positioning the steel bars positioned at the clamping position; the positioning mechanism comprises:

the fixed seat is fixed on the frame;

the fourth air cylinder is fixed on the fixed seat and is positioned above the fixed seat, and the fourth air cylinder is provided with a fourth air cylinder rod which stretches and contracts along the axial direction perpendicular to the reinforcing steel bars;

The sixth guide rail is arranged on the lower surface of the fixed seat, and the length direction of the sixth guide rail is consistent with the expansion and contraction direction of the fourth cylinder rod;

one end of the positioning push plate is fixed on the sliding block of the sixth guide rail, and the other end of the positioning push plate is fixed at the tail end of the fourth cylinder rod; and the positioning push plate pushes the rubbed steel bars to the clamping position to squeeze the positioning column.

8. The precise multi-specification rebar picking device according to claim 1, wherein the roll-feed mechanism comprises:

a motor-reducer combination mounted on the frame;

a sprocket connected to an output shaft of the motor-speed reducer combination;

the driving conveying wheel is connected with the chain wheel through a chain;

two groups of first guide wheels are respectively arranged at two ends of the rolling mechanism in the moving direction of the steel bars, and each group of first guide wheels comprises two first guide wheels respectively positioned at two sides of the driving conveying wheel; a space for placing the reinforcing steel bars is formed between the two first guide wheels of each group, and the space plays a role in guiding the conveying of the reinforcing steel bars;

and the conveying channel is used for guiding the reinforcing steel bars into the conveying channel by rotating the driving conveying wheels.

9. The precise multi-specification steel bar picking device according to claim 8, wherein the picking and conveying mechanism further comprises a pushing mechanism, the pushing mechanism is located above the rolling mechanism, and the pushing mechanism comprises:

A fifth cylinder mounted on the frame, the fifth cylinder having a fifth cylinder rod protruding downward;

the roller support is arranged at the tail end of the fifth cylinder rod;

the second guide rail is arranged on the frame, the second guide rail is arranged along the height direction of the frame, and the roller support is driven by the fifth air cylinder to move along the second guide rail;

the driven rolling wheel is arranged in the roller support, presses the steel bar after the roller support descends, and is matched with the driving conveying wheel to clamp and convey the steel bar;

the second guide wheel is arranged in the roller support and plays a role in guiding longitudinal conveying of the reinforcing steel bars.

10. The precise multi-specification steel bar picking device according to claim 1, wherein the picking and conveying mechanism further comprises a material blocking mechanism arranged above the material receiving mechanism, and the material blocking mechanism comprises:

a sixth cylinder fixed to the frame, the sixth cylinder having a sixth cylinder rod protruding downward;

and the baffle is connected to the tail end of the sixth cylinder rod and stops the end part of the steel bar which is not clamped on the receiving mechanism.