A flat support type material picking device for conveying steel bars

Abstract

The present invention relates to a flat-supporting material picking device for conveying steel bars, comprising a fixed frame, a material picking assembly and a lifting assembly, wherein the material picking assembly comprises a mobile frame and a plurality of propulsion cylinders, a plurality of mobile positioning wheels are symmetrically arranged at both ends of the bottom of the mobile frame, the mobile positioning wheels are located at the rear of the mobile frame, and transverse rails for installing the plurality of mobile positioning wheels are respectively arranged at both ends of the fixed frame; a plurality of propulsion cylinders are fixedly arranged at the bottom of the mobile frame and parallel to the transverse rails, and the piston rods of the propulsion cylinders are fixedly connected to the fixed frame to push the mobile frame to move along the transverse rails to the top of the sawing platform; the lifting assembly is arranged on the sawing platform and is used to lift the sawed steel bars. The present invention can realize the automatic and neat conveying of the sawed steel bars to the subsequent workstations, has high safety, short feeding path, low energy consumption, low requirements on the production plant, simple installation process, and the device has the characteristics of simple structure, reliable operation, small space occupation, etc.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar processing mechanical engineering, and in particular to a flat-supporting material picking device for conveying steel bars. Background Art

[0002] At present, most of the domestic sawing and threading processing is manually operated, and it is impossible to automatically and neatly transport the steel bars after sawing to the upsetting or threading device, which increases the processing steps, increases the labor intensity, increases the labor cost, and reduces the processing efficiency. This has become a common technical problem in the production of steel bar sawing and threading. Summary of the invention

[0003] In order to solve the problem in the prior art of threading processing that the steel bars cannot be automatically and neatly transported to subsequent workstations after sawing, which increases the processing steps, increases the labor intensity, increases the labor cost and reduces the processing efficiency, the present invention provides a flat-supporting material picking device for transporting steel bars.

[0004] The above technical problems of the present invention are achieved through the following technical solutions:

[0005] A flat-supporting material picking device for conveying steel bars, characterized in that it comprises a fixed frame, a material picking assembly and a lifting assembly, the material picking assembly comprises a mobile frame and a plurality of propulsion cylinders, a plurality of mobile positioning wheels are symmetrically arranged at both ends of the bottom of the mobile frame, the mobile positioning wheels are located at the rear of the mobile frame, and transverse rails for mounting the plurality of mobile positioning wheels are respectively arranged at both ends of the fixed frame;

[0006] A plurality of the propulsion cylinders are fixedly mounted at the bottom of the moving frame and are parallel to the cross rails, and piston rods of the propulsion cylinders are fixedly connected to the fixed frame to push the moving frame to move along the cross rails to above the sawing platform;

[0007] The lifting assembly is arranged on the sawing platform and is used for lifting the sawed steel bars.

[0008] Furthermore, the picking assembly further comprises a feeding structure, which comprises: a plurality of feeding chains and transmission rods arranged on the mobile frame, the top of the mobile frame is provided with support rods evenly distributed and parallel to the cross rails, the support rods are provided with support rod sprockets matched with the feeding chains; a plurality of sprockets matched with the feeding chains are evenly arranged on the transmission rod shaft;

[0009] The moving frame is provided with a first driving motor and a reduction motor, the reduction motor is connected to the output shaft of the first driving motor, and the output shaft of the reduction motor is connected to the transmission rod.

[0010] Furthermore, the lifting assembly includes multiple pallets and multiple lifting cylinders. The multiple pallets are evenly arranged along the longitudinal direction of the sawing platform, and adjacent pallets are connected by connecting rods; the multiple lifting cylinders are fixed on the sawing platform, and the piston rods of the lifting cylinders are fixedly connected to the connecting rods to control the lifting or resetting of the pallets.

[0011] Furthermore, it also includes a sorting device arranged on the rear side of the fixed frame, and the sorting device includes: two cylinders fixed on the picking frame, a rotating shaft hinged to the piston rod of the cylinder, and a plurality of V-shaped hooking plates arranged on the rotating shaft and distributed along the axis; two lugs are provided at the end of the piston rod, and there is a gap between the two lugs; a convex plate is provided on the rotating shaft and inserted between the two lugs, and the convex plate is hinged to the lug through a pin shaft.

[0012] Furthermore, the length of the support rod is greater than the width of the sawing platform, and when the propulsion cylinder is in an extended state, the free end of the support rod extends out of the outer edge of the sawing platform.

[0013] The following are the beneficial effects of the present invention:

[0014] 1. The present invention arranges a mobile rack on a fixed rack, and the mobile rack combines with a lifting assembly arranged on the sawing platform to automatically, neatly and smoothly transport the sawn steel to the next workstation (threading or upsetting), so as to automatically and neatly transport the sawn steel bars to the subsequent workstations, with high safety, short feeding path, low energy consumption, low requirements on production plants, simple installation process, and the device has the characteristics of simple structure, reliable operation, small space occupation, etc.

[0015] 2. The feeding assembly flattens the steel bars through the chain sprocket and can transport the steel bars to the sorting device one by one, so that the sorting device can turn the steel bars one by one to the next station, reduce friction and collision between the steel bars, and reduce noise.

[0016] 3. The present invention connects the plurality of support plates together through a connecting rod, so that the lifting and lowering timing of the support plates is consistent, and the number of lifting cylinders can be reduced, thus saving production costs.

[0017] 4. The present invention arranges a sorting device at the rear side of the material picking assembly, so that the steel bars can be sorted and turned over one by one, so that the steel bars can proceed to the next process in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a flat-support type material picking device for conveying steel bars.

[0019] Figure 2 yes Figure 1 Control block diagram of the mid-level pick-up device.

[0020] In the figure: 1-fixed frame; 2-movable frame; 21-support rod; 3-propulsion cylinder; 4-movable positioning wheel; 5-cross rail; 6-sawing platform; 7-feeding chain; 8-transmission rod; 9-first drive motor; 10-reduction motor; 11-pallet; 12-sorter. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structural features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0024] The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0025] At present, after sawing, the steel bars are mostly transported manually to the next process station, such as threading station, thickening station or hoop bending station, which prolongs the average operation time of the production line, increases labor intensity, increases labor costs, and reduces processing production efficiency.

[0026] In order to reduce the number of operating procedures, reduce labor cost input, and improve production efficiency and safety, a side-tipping material picking device is designed in the prior art. The side-tipping material picking device generally includes a tipping bucket arranged on a sawing platform, a storage hopper with an inclined surface, and a sorting device for transporting the steel bars in the storage hopper to the next process station.

[0027] A specific form of the side-flipping material picking device is that the sawing platform and the subsequent platform are on the same horizontal line. At this time, the cross-section of the storage hopper is mostly U-shaped or inverted trapezoidal. The opening of the storage hopper is lower than the sawing platform, so that the steel bars can fall into the storage hopper smoothly when the tipping bucket is raised. A transverse chain is set at the bottom of the storage hopper to flatten the steel bars and further transport them to the sorting device. The sorting device needs to sort the steel bars one by one and transport the steel bars from the storage hopper to the next process station through chains. The material transportation path of this type of material picking device is long, and the material transportation mechanism is complex. The sorting device needs to transport the steel bars from a low place to a high place again, which makes the structure of the sorting device complex and the driving energy consumption high.

[0028] Another form of the side-flipping material picking device is a production line with a stepped layout. The working platform of the sawing process is located at the highest point, and the storage hopper is a slope lower than the sawing platform. A baffle is set at the bottom of the slope. After the tipping bucket flips the steel bars onto the slope, the steel bars slide to the bottom of the slope under their own gravity and are limited by the baffle. The sorting device is set at the baffle, and the sorting device flips the steel bars to the next process station at the bottom of the slope in turn. In this form, the steel bars are easy to hit the inclined surface and then directly jump over the baffle and continue to fall down, causing unsafe accidents. More importantly, the sawing platform needs to be elevated, the installation project is complicated, the requirements for the production plant are high, and it is difficult to load the steel bars before sawing.

[0029] Embodiment 1:

[0030] In order to solve the problems that the picking device on the existing steel bar sawing and threading production line has high requirements on the production environment of the sawing and threading production line, the machine installation process is complicated, the sawing and loading is difficult, the risk factor is high, the picking device has a complex structure, the material transportation path is long, and the energy consumption is high. This embodiment provides a flat-supported picking device for conveying steel bars, including a fixed frame 1, a picking assembly and a lifting assembly. The picking assembly includes a mobile frame 2 and a plurality of propulsion cylinders 3. A plurality of mobile positioning wheels 4 are symmetrically arranged at both ends of the bottom of the mobile frame 2. The mobile positioning wheels 4 are located at the rear of the mobile frame 2. The two ends of the fixed frame 1 are respectively provided with transverse rails 5 for installing the plurality of mobile positioning wheels 4; a plurality of propulsion cylinders 3 are fixedly arranged at the bottom of the mobile frame 2 and are parallel to the transverse rails 5. The piston rods of the propulsion cylinders 3 are fixedly connected to the fixed frame 1 to push the mobile frame 2 to move along the transverse rails 5 to the top of the sawing platform 6; the lifting assembly is arranged on the sawing platform 6 to lift the sawed steel bars.

[0031] The fixed frame 1 can be placed directly on the ground and parallel to the sawing station. The top of the mobile frame 2 is higher than the sawing platform 6, so that the mobile frame 2 can be partially located above the sawing platform 6; when the lifting assembly is in the reset state, the height of the lifting assembly is equal to or lower than the sawing work platform, preferably lower than the sawing platform 6, so as to reduce the wear of the lifting assembly and extend its service life.

[0032] The propulsion cylinder 3 is the power source for the mobile frame 2 to move forward and backward along the cross rail 5. There are multiple propulsion cylinders 3, which can be set according to the length of the fixed frame 1. Generally, two propulsion cylinders are preferably set, and they are symmetrically set at both ends of the mobile frame 2. As a preference, the propulsion cylinder 3 is set inside the mobile positioning wheel 4.

[0033] The mobile positioning wheels 4 are slidably matched with the cross rails 5 to support the mobile frame 2 and enable the mobile frame 2 to move forward and backward smoothly along the cross rails 5. There are 2n mobile positioning wheels 4, where n is greater than or equal to 1, and n mobile positioning wheels 4 are respectively arranged at both ends of the mobile frame 2. The n mobile positioning wheels 4 are arranged in parallel along the cross rails 5, and there is a gap between adjacent mobile positioning wheels 4 at the same end; preferably, n is 2, that is, there are 4 mobile positioning wheels 4, and 2 mobile positioning wheels 4 are respectively arranged at both ends of the mobile frame 2. At this time, the mobile frame 2 can be stably and smoothly moved forward and backward on the cross rails 5, and the lateral width of the fixed frame 1 can be minimized, so that the material transportation path of the picking component is the shortest.

[0034] It should be noted that in this embodiment, when the propulsion cylinder 3 is in the extended state, the width of the portion of the mobile frame 2 located above the sawing platform 6 needs to be greater than or equal to the width of the material picking platform, so that all the sawn steel materials on the pallet 11 can be transferred to the material picking assembly. Therefore, the width D of the mobile frame 2 is at least equal to the sum of the distance d between the first mobile positioning wheel 4 and the nth mobile positioning wheel 4 and the width k of the sawing platform 6, that is, D=d+k. In addition, the width of the fixed frame 1 needs to be greater than or equal to the width of the mobile frame 2 so as not to hinder the smooth progress of the sawing process and subsequent processes.

[0035] The mobile frame 2 of this embodiment includes a main body, a plurality of mobile positioning wheels 4, and a plurality of support rods 21. The mobile positioning wheels 4 and the support rods 21 are all arranged on the main body. The support rods 21 are located at the top of the main body, and the lateral width of the main body is smaller than the length of the support rods 21. In this embodiment, it is only necessary to ensure that the support rods 21 are higher than the sawing work platform.

[0036] The above-mentioned picking assembly also includes a feeding structure, which is used to automatically move the steel bars carried on the support rods 21 to the sorting device in sequence.

[0037] The feeding structure includes a plurality of feeding chains 7 and a transmission rod 8 arranged on the mobile frame 2. The top of the mobile frame 2 is provided with support rods 21 evenly distributed and parallel to the cross rail 5. The feeding chains 7 are respectively arranged on the support rods 21; the transmission rod 8 is arranged on the rear side of the support rod 21, and sprockets cooperating with the plurality of feeding chains 7 are evenly arranged on the transmission rod 8; the mobile frame 2 is provided with a first driving motor 9 and a reduction motor 10, the reduction motor 10 is connected to the output shaft of the first driving motor 9, and the output shaft of the reduction motor 10 is connected to the transmission rod 8 through a driving wheel-transmission belt-driven wheel. Specifically, a driving wheel is arranged on the output shaft of the reduction motor 10, and a driven wheel is arranged at the corresponding position of the transmission rod 8. The driving wheel and the driven wheel are connected through a transmission belt, so that the transmission rod 8 is driven by the transmission belt to rotate, and then the chain is driven to rotate through the sprocket, so as to realize that the steel bars on the support rod 21 are moved one by one to the sorting device.

[0038] Bearing seats are respectively arranged at both ends of the rear side of the top of the moving frame 2, and the transmission rod 8 is installed on the body of the moving frame 2 through the bearing seats.

[0039] The lifting component of this embodiment can be in any form, as long as it can lift the sawed steel bars completely and neatly to a point where the feeding chain 7 can be inserted and reach under the lifted steel bars. Preferably, a specific structure of a lifting component and its installation method are given here: the lifting component includes multiple support plates 11 and multiple lifting cylinders. The multiple support plates 11 are evenly arranged along the longitudinal direction of the sawing platform 6, and adjacent support plates 11 are connected by connecting rods; multiple lifting cylinders are fixed on the sawing platform 6, and the piston rods of the lifting cylinders are fixedly connected to the connecting rods to control the lifting or resetting of the support plates 11.

[0040] The above-mentioned connecting rod can be one or more, but each connecting rod needs to correspond to two lifting cylinders to facilitate lifting the support plate 11.

[0041] Furthermore, the picking device of the present embodiment also includes a sorting device. The sorting device of the present embodiment can adopt the sorting device commonly used in the prior art, as long as it can turn the steel bars on the feeding chain 7 to the next process station in sequence. The specific selection should be flexibly made according to the positional relationship between the working platform of the next process station and the picking device.

[0042] As a preferred embodiment, a preferred sorting device is provided in this embodiment: the sorting device is arranged at the rear side of the fixed frame 1 and outside the mobile frame 2, and is used to flip the steel bars on the material picking assembly one by one to the next process station; the material sorting device comprises a rotating shaft, a plurality of sorters 12 and a second driving motor, the rotating shaft is connected to the fixed frame 1 through a fixed plate, the sorters 12 are evenly distributed on the rotating shaft, and the output shaft of the second driving motor is connected to the rotating shaft. The rotating shaft is connected to the fixed frame 1 through a bearing seat.

[0043] It also includes a controller for the entire material picking device. The propulsion cylinder 3, the first drive motor 9, the lifting cylinder, and the second drive motor are all connected to the signal output end of the controller. The controller controls the working states of the propulsion cylinder 3, the first drive motor 9, the lifting cylinder, and the second drive motor.

[0044] Furthermore, the sorting device of this embodiment is provided with a sensor for sensing the position of the steel bars, and the signal output end of the sensor is connected to the signal input end of the controller, that is, the sensor transmits the measured detection signal to the controller, and the controller controls the working state of the second drive motor through the detection signal.

[0045] like Figure 2 As shown, the signal output end of the sensor is connected to the signal input end of the controller, and the propulsion cylinder 3, the first drive motor 9, the second drive motor and the lowering cylinder are respectively connected to the signal output end of the controller.

[0046] The controller in this embodiment can be a STC89S52 single-chip microcomputer, a DSP chip or a computer host.

[0047] The sensor may be a photoelectric sensor of model CDD-11N (NPN output) or CDD-11P (PNP output) produced by OPTEX.

[0048] It can also be the P981 series rolling mill pressure sensor produced by Guangzhou Ankai Electronic Instrument Co., Ltd. The P981 series pressure transmitter is specially designed for the harsh environment encountered by steel rolling mill and aluminum rolling mill type rolling mill equipment. Based on the popular P980 two-wire 4-20mA compensation series, the P981-01XX provides unique performance that other types of pressure transmitters have. The rolling mill series provides an ultra-fast response frequency of 900Hz while maintaining an accuracy of less than ±0.20% of the full-scale output. The P981-010XX includes a built-in transient suppressor to eliminate the effects of line transient voltages, and EMC complies with CE standards. The pressure transmitter is also equipped with an integral pressure limiter, which basically eliminates the possibility of instantaneous high pressure damaging the product.

[0049] Any sensing device can be used as long as it can sense that the steel bar located at the front side of the moving direction of the feeding chain 7 has arrived at the sorting device. When the sensor detects the position of the steel bar, it sends a detection signal to the controller, and the controller controls the working state of the second motor through the detection signal.

[0050] The following is the working process of the present invention:

[0051] First, when the sawing station completes the sawing process, the controller controls the lifting cylinder to extend, the pallet 11 rises, and the steel bars on the pallet 11 are lifted; the controller controls the propulsion cylinder 3 to extend, and the propulsion cylinder 3 pushes the mobile frame 2 forward, so that the feeding chain 7 on the support rod 21 reaches under the lifted steel bars; then the controller controls the lifting cylinder to retract, and the pallet 11 is reset. At this time, the steel bars are placed flat on the mobile frame 2. The controller controls the propulsion cylinder 3 to retract, and the propulsion cylinder 3 drives the mobile frame 2 to reset together, and the sawed steel bars are smoothly moved to the top of the main frame. At the same time, the controller controls the first drive motor 9 to work, and the first drive motor 9 drives the feeding chain 7 to move backward, and then moves the steel bars to the sorting device. When the sensor senses that the first steel bar has arrived at the sorting device, the sensor sends a detection signal to the controller, and the controller controls the first drive motor 9 to stop rotating; the controller controls the second drive motor to work, and the second drive motor drives the shaft to rotate, and the shaft drives the sorter 12 to rotate. The sorter 12 turns over one steel bar to the next process station in turn. When the steel bar at the sensor is turned over, the controller controls the first drive motor 9 to continue to rotate, and transports another steel bar to the sorting device. And so on, until the sorting device turns over all the steel bars to the next station.

[0052] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A flat-supporting material picking device for conveying steel bars, characterized in that: It comprises a fixed frame (1), a material picking assembly and a lifting assembly, wherein the material picking assembly comprises a mobile frame (2) and a plurality of propulsion cylinders (3), a plurality of mobile positioning wheels (4) are symmetrically arranged at both ends of the bottom of the mobile frame (2), the mobile positioning wheels (4) are located at the rear of the mobile frame (2), and transverse rails (5) for mounting the plurality of mobile positioning wheels (4) are respectively arranged at both ends of the fixed frame (1); A plurality of the propulsion cylinders (3) are fixedly mounted at the bottom of the movable frame (2), and piston rods of the propulsion cylinders (3) are fixedly connected to the fixed frame (1) so as to push the movable frame (2) to move partially along the cross rail (5) to above the sawing platform (6); The lifting assembly is arranged on the sawing platform (6) and is used to lift the steel bars after sawing; The picking assembly also includes a feeding structure, which includes: a plurality of feeding chains (7) and a transmission rod (8) arranged on the mobile frame (2); the top of the mobile frame (2) has a support rod (21) evenly distributed and parallel to the cross rail (5); the support rod (21) is provided with a support rod sprocket that cooperates with the feeding chain (7); the shaft of the transmission rod (8) is evenly provided with a plurality of sprockets that cooperate with the feeding chain (7); The mobile frame (2) is provided with a first driving motor (9) and a reduction motor (10), the reduction motor (10) is connected to the output shaft of the first driving motor (9), and the output shaft of the reduction motor (10) is connected to the transmission rod (8); The length of the support rod (21) is greater than the width of the sawing platform (6), and when the propulsion cylinder (3) is in an extended state, the free end of the support rod (21) extends out of the outer edge of the sawing platform (6); The number of the movable positioning wheels (4) is 2n, where n is greater than or equal to 1, and n are respectively arranged at both ends of the movable frame (2). The n movable positioning wheels (4) are arranged in parallel along the transverse rail (5), and there is a gap between adjacent movable positioning wheels (4) at the same end: The sorting device is arranged at the rear side of the fixed frame (1) and outside the movable frame (2), and is used for flipping the steel bars on the picking assembly one by one to the next process station; the sorting device comprises a rotating shaft, a plurality of sorters (12) and a second driving motor, the rotating shaft is connected to the fixed frame (1) through a fixing plate, the sorters (12) are evenly distributed on the rotating shaft, the output shaft of the second driving motor is connected to the rotating shaft, and the rotating shaft is connected to the fixed frame (1) through a bearing seat.

2. The flat-support material picking device according to claim 1, characterized in that: The lifting assembly comprises a plurality of support plates (11) and a plurality of lifting cylinders. The plurality of support plates (11) are evenly arranged along the longitudinal direction of the sawing platform (6), and adjacent support plates (11) are connected by connecting rods. The plurality of lifting cylinders are fixedly arranged on the sawing platform (6), and the piston rods of the lifting cylinders are fixedly connected to the connecting rods to control the lifting or resetting of the support plates (11).

3. The flat-support material picking device according to claim 1, characterized in that: It also includes a sorting device arranged at the rear side of the fixed frame (1), the sorting device comprising: two cylinders fixedly arranged on the material picking frame, a rotating shaft hinged to the piston rods of the cylinders, and a plurality of V-shaped hooking plates arranged on the rotating shaft and distributed along the axis; The end of the piston rod is provided with two lugs, a gap is provided between the two lugs, and the rotating shaft is provided with a convex plate inserted between the two lugs, and the convex plate is hinged to the lugs through a pin shaft.

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