CN113847974A - Automatic steel bundle weighing device and control method thereof - Google Patents
Automatic steel bundle weighing device and control method thereof Download PDFInfo
- Publication number
- CN113847974A CN113847974A CN202111205254.3A CN202111205254A CN113847974A CN 113847974 A CN113847974 A CN 113847974A CN 202111205254 A CN202111205254 A CN 202111205254A CN 113847974 A CN113847974 A CN 113847974A
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- Prior art keywords
- weighing
- lifting arm
- lifting
- steel
- induction
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/02—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
- G01G13/022—Material feeding devices
- G01G13/026—Material feeding devices by mechanical conveying means, e.g. belt or vibratory conveyor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/24—Weighing mechanism control arrangements for automatic feed or discharge
- G01G13/28—Weighing mechanism control arrangements for automatic feed or discharge involving variation of an electrical variable which is used to control loading or discharge of the receptacle
- G01G13/295—Weighing mechanism control arrangements for automatic feed or discharge involving variation of an electrical variable which is used to control loading or discharge of the receptacle for controlling automatic loading of the receptacle
Abstract
The invention discloses an automatic weighing device for a steel bundle and a control method thereof, wherein the device comprises a weighing platform and a conveying device for conveying the steel bundle to the weighing platform or conveying the steel bundle from the weighing platform to a next procedure, the weighing platform comprises a plurality of weighing units arranged at intervals, and pressure sensors are arranged on the weighing units; the conveying device comprises a plurality of lifting arms capable of lifting, and a conveying chain is arranged at the top ends of the lifting arms; the lifting arms are dispersedly arranged at intervals of the weighing unit, and the height position of the top surface of the weighing unit is positioned between the highest point and the lowest point of the lifting arm lift; the device also comprises an arrival sensing device for sensing the arrival of the steel bundles at the weighing platform, a rising proximity switch and a falling proximity switch for sensing the lifting arm to lift in place, and a control device. The device can realize the automatic weighing of steel bundle to can effectively avoid the not enough problem of time of weighing. Greatly reducing the labor intensity of workers and improving the weighing efficiency and the weighing accuracy.
Description
Technical Field
The present invention relates to a device for weighing a bundle of steel and a method for controlling the device.
Background
The steel bars rolled in the steel rolling plant need to be weighed after being packed into bundles. The existing method is to hoist to a weighing platform for weighing through manual control and then hoist to the next procedure. The whole process needs manual participation, and the labor is complicated and the repetition degree is high. And because manual control can appear weighing time not enough, lead to weight data not upload to the measurement system to need to meter again and check, influence production rhythm.
Disclosure of Invention
In view of this, the invention provides an automatic weighing device for steel bundles and a control method thereof, which can automatically weigh the steel bundles.
In order to solve the technical problems, the technical scheme of the invention is as follows: a steel bundle automatic weighing device comprises a weighing platform and a conveying device, wherein the conveying device is used for conveying steel bundles to the weighing platform or conveying the steel bundles to a next procedure from the weighing platform; the conveying device comprises a plurality of lifting arms capable of lifting, and a conveying chain is arranged at the top ends of the lifting arms; the lifting arms are dispersedly arranged at intervals of the weighing unit, and the height position of the top surface of the weighing unit is positioned between the highest point and the lowest point of the lifting arm lift; the device also comprises an arrival sensing device for sensing the arrival of the steel bundles at the weighing platform, a rising proximity switch and a falling proximity switch for sensing the rising and falling of the lifting arm in place, and a control device, wherein the control device is connected with the pressure sensor, the lifting arm, the arrival sensing device, the rising proximity switch and the falling proximity switch.
As an improvement, the weighing units are arranged on a straight line, and the lifting arm is perpendicular to the straight line. The weighing cells are arranged in a line to match the shape of the bundle.
As an improvement, the arrival sensing device is arranged on the lifting arm and positioned in front of the weighing unit; the arrival induction device comprises an arrival approach switch and an induction deflector rod; the induction deflector rod can be turned up and down, and the upper end of the induction deflector rod extends out of the top surface of the lifting arm, so that when the steel bundle reaches the position of the induction deflector rod and the upper end of the induction deflector rod is moved, the lower end of the induction deflector rod can be driven to be separated from the induction range of the proximity switch. The steel bundle stirs the upper end of the induction deflector rod, the lower end of the induction deflector rod is separated from the reaction range of the proximity switch, the signal reaching the proximity switch is lost, and the control device obtains the signal reaching the steel bundle, so that the conveying chain is controlled to stop moving. After the steel bundle passes through, the lower end of the induction deflector rod automatically resets due to the lever principle, and the signal is restored to meet the arrival of the next steel bundle.
Preferably, the upper end of the induction deflector rod is provided with an arc-shaped extension part, and the lower end of the induction deflector rod is provided with an induction plate with a width larger than that of the induction deflector rod. The contact area of the arc-shaped extension part and the steel bundle is increased, and the steel bundle is prevented from being clamped.
As an improvement, the lifting arm is rod-shaped, and one end of the lifting arm is movably connected with the base, so that the lifting arm can be turned over up and down; the conveying chain is arranged along the extending direction of the lifting arm; the lifting arm turnover device further comprises a driving device for driving the lifting arm to turn over. When the lifting arm is lifted, the lifting arm is horizontal after being lowered to the right position from high to low according to the running direction of the conveying chain. The lifting is such that a slope is created, which enables the bundle to advance by gravity, reducing the load on the conveyor chain.
Preferably, the driving device comprises a synchronous rod perpendicular to the lifting arm and a hydraulic device for driving the synchronous rod to rotate; every lifing arm bottom all is provided with the slide rail, fixed cover has a plurality of jacking cams with slide rail complex respectively on the synchronizing bar. The synchronous rods are utilized to drive the cams to rotate, so that the lifting arms are simultaneously jacked up or lowered down, and the aim of synchronization is fulfilled.
Preferably, the device further comprises a feeding roller group, wherein the feeding roller group is vertically arranged with the lifting arm; the feeding roller group comprises a plurality of feeding rollers arranged at intervals, and the conveying chains on the lifting arms extend to the intervals between the adjacent feeding rollers. And the feeding roller set is used for feeding, so that the steel bundle is favorably arranged.
The invention also provides a method for controlling the automatic steel bundle weighing device, which comprises the following steps:
controlling the lifting arm to ascend;
after the lifting arm rises to the right position, the conveying chain is controlled to run towards the weighing platform;
the conveying chain receives a stop command before reaching the weighing platform, and stops running after T1 is delayed;
the lifting arm starts to descend when the conveying chain stops running, stops T2 after descending to a proper position, and starts to ascend again after the feeding roller group newly feeds the steel bundles to repeat the actions; the weighing station finishes weighing in T2 after the lifting arm is lowered to the position.
Preferably, the T1 is 1.5-2.0 s, and the T2 is 10-15 s.
As an improvement, the lifting arm is locked within the time T2 after the conveying chain descends to the right position, so that the lifting arm cannot ascend.
The invention has the advantages that: the steel bundle automatic weighing device with the structure and the control method with the steps can realize the automatic weighing of the steel bundles and effectively avoid the problem of insufficient weighing time. Greatly reducing the labor intensity of workers and improving the weighing efficiency and the weighing accuracy.
Drawings
FIG. 1 is a top view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a state diagram when the lift arm is raised.
The labels in the figure are: the device comprises a weighing unit 1, a lifting arm 2, a feeding roller 3, a steel bundle 4, a pressure sensor 11, a conveying chain 21, a base 22, a jacking cam 23, a sliding rail 24, a proximity switch 25, an induction deflector rod 26 and a synchronizing rod 27.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.
As shown in fig. 1-3, the invention provides an automatic weighing device for steel bundles, which comprises a weighing platform and a conveying device for conveying the steel bundles 4 onto the weighing platform or conveying the steel bundles 4 from the weighing platform to a next procedure, wherein the weighing platform comprises a plurality of weighing units 1 arranged at intervals, and the weighing units 1 are provided with pressure sensors 11; the conveying device comprises a plurality of lifting arms 2 capable of lifting, and a conveying chain 21 is arranged at the top ends of the lifting arms 2; the lifting arms 2 are dispersedly arranged at intervals of the weighing unit 1, and the height position of the top surface of the weighing unit 1 is positioned between the highest point and the lowest point of the lifting range of the lifting arms 2; the device also comprises an arrival sensing device for sensing the arrival of the steel bundle 4 at the weighing platform, an ascending proximity switch and a descending proximity switch for sensing the ascending and descending of the lifting arm 2, and a control device, wherein the control device is connected with the pressure sensor, the lifting arm, the arrival sensing device, the ascending proximity switch and the descending proximity switch. In this embodiment, the control device is preferably a PLC controller, which facilitates programming control. For the purpose of matching the steel bundle 4, several weighing cells 1 are arranged in a straight line, to which the lifting arm 2 is perpendicular.
Specifically, the arrival sensing device is arranged on the lifting arm 2 in front of the weighing unit; the arrival sensing device comprises an arrival proximity switch 25 and a sensing shift lever 26; the induction deflector rod 26 can be turned up and down, and the upper end of the induction deflector rod 26 extends out of the top surface of the lifting arm 2, so that when the steel bundle 4 reaches the position of the induction deflector rod 26 and the upper end of the induction deflector rod 26 is deflected, the lower end of the induction deflector rod 26 can be driven to be separated from the induction range of the proximity switch 25. The upper end of the induction deflector rod 26 is provided with an arc-shaped extension part, and the lower end is provided with an induction plate with the width larger than that of the induction deflector rod.
The lifting arm 2 is in a rod shape, and one end of the lifting arm is movably connected with the base 22, so that the lifting arm can be turned over up and down; the conveying chain 21 is arranged along the extending direction of the lifting arm 2; and the lifting arm device also comprises a driving device for driving the lifting arm 2 to overturn. The driving device comprises a synchronous rod 27 vertical to the lifting arm 2 and a hydraulic device for driving the synchronous rod 27 to rotate; the bottom of each lifting arm 2 is provided with a slide rail 24, and the synchronizing rod 27 is fixedly sleeved with a plurality of jacking cams 23 which are respectively matched with the slide rails 24.
The feeding roller set is perpendicular to the lifting arm 2; the feeding roller group comprises a plurality of feeding rollers 3 arranged at intervals, and the conveying chains 21 on the lifting arms 2 extend to the intervals between the adjacent feeding rollers. Of course, the height of the tread on the feed roll should likewise be between the highest and lowest point of the lift of the lifting arm 2.
The invention also provides a method for controlling the automatic steel bundle weighing device, which comprises the following steps.
S1 controls the lift arm 2 to ascend. The steel bundle 4 enters the feeding roller set from the previous process, and after the steel bundle 4 is in place, the lifting arm 2 is controlled to ascend through the control device, so that the steel bundle 4 is lifted from the feeding roller set.
And S2, after the lifting arm 2 is lifted to the right position, controlling the conveying chain 21 to move towards the weighing platform. After the lifting arm 2 is lifted to the right position, the lifting proximity switch loses signals, at the moment, the control device controls the conveying chain 21 to start working, and the steel bundle 4 moves towards the weighing platform under the action of the conveying chain 21.
The conveying chain 21 receives the stop command before S3 reaches the weighing station, and stops the operation after a delay of T1. The steel bundle 4 advances on the conveying chain 21, touches the upper end of the induction deflector rod 26 when approaching the weighing platform, and pushes down the induction deflector rod, while the lower end of the induction deflector rod 26 upwarps under the action of the lever principle, and breaks away from the induction range reaching the proximity switch 25, and the signal is lost. And after the signal is lost, the control device starts timing and stops running after delaying for 1.5-2.0 s (the time can be adjusted according to actual field to ensure that the steel bundle falls on the scale).
S4 the conveying chain 21 stops running and the lifting arm 2 starts to descend, and stops T2 to start to ascend after descending to a certain position; the weighing station finishes weighing in T2 after the lifting arm 2 is lowered into position. When the conveyor chain 21 stops, the steel bundle 4 just falls onto the weighing platform, and the lifting arm 2 starts to descend. And after the lifting arm 2 is in the place, the signal of the proximity switch is lost, the control device starts to time and locks the lifting arm 2 after the signal is lost so that the lifting arm cannot rise, and meanwhile, the weighing platform finishes weighing within 10-15 s of the stopping operation of the lifting arm 2 and uploads the data to the control device. After the stopping time is over, the lifting arm 2 is lifted up to lift the steel bundle 4 weighed on the weighing platform and the steel bundle 4 newly fed on the feeding roller group at the same time and carry out the next round of weighing.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (10)
1. The utility model provides a steel bundle automatic weighing device, includes weighing platform and is used for weighing the platform or will weigh the conveyor that the steel bundle sent to next process from weighing the bench, its characterized in that: the weighing platform comprises a plurality of weighing units arranged at intervals, and pressure sensors are arranged on the weighing units; the conveying device comprises a plurality of lifting arms capable of lifting, and a conveying chain is arranged at the top ends of the lifting arms; the lifting arms are dispersedly arranged at intervals of the weighing unit, and the height position of the top surface of the weighing unit is positioned between the highest point and the lowest point of the lifting arm lift; the device also comprises an arrival sensing device for sensing the arrival of the steel bundles at the weighing platform, a rising proximity switch and a falling proximity switch for sensing the rising and falling of the lifting arm in place, and a control device, wherein the control device is connected with the pressure sensor, the lifting arm, the arrival sensing device, the rising proximity switch and the falling proximity switch.
2. The automatic weighing device for the steel bundles according to claim 1, characterized in that: the weighing units are arranged on a straight line, and the lifting arm is perpendicular to the straight line.
3. The automatic weighing device for the steel bundles according to claim 1, characterized in that: the arrival sensing device is arranged on the lifting arm and positioned in front of the weighing unit; the arrival induction device comprises an arrival approach switch and an induction deflector rod; the induction deflector rod can be turned up and down, and the upper end of the induction deflector rod extends out of the top surface of the lifting arm, so that when the steel bundle reaches the position of the induction deflector rod and the upper end of the induction deflector rod is moved, the lower end of the induction deflector rod can be driven to be separated from the induction range of the proximity switch.
4. The automatic weighing device for the steel bundles according to claim 1, characterized in that: the upper end of the induction deflector rod is provided with an arc-shaped extension part, and the lower end of the induction deflector rod is provided with an induction plate with the width larger than that of the induction deflector rod.
5. The automatic weighing device for the steel bundles according to claim 1, characterized in that: the lifting arm is rod-shaped, and one end of the lifting arm is movably connected with the base so that the lifting arm can be turned over up and down; the conveying chain is arranged along the extending direction of the lifting arm; the lifting arm turnover device further comprises a driving device for driving the lifting arm to turn over.
6. The automatic weighing device for the steel bundles according to claim 5, characterized in that: the driving device comprises a synchronous rod vertical to the lifting arm and a hydraulic device for driving the synchronous rod to rotate; every lifing arm bottom all is provided with the slide rail, fixed cover has a plurality of jacking cams with slide rail complex respectively on the synchronizing bar.
7. The automatic weighing device for the steel bundles according to claim 1, characterized in that: the feeding roller set is perpendicular to the lifting arm; the feeding roller group comprises a plurality of feeding rollers arranged at intervals, and the conveying chains on the lifting arms extend to the intervals between the adjacent feeding rollers.
8. A control method of an automatic weighing device for steel bundles is characterized by comprising the following steps:
controlling the lifting arm to ascend;
after the lifting arm rises to the right position, the conveying chain is controlled to run towards the weighing platform;
the conveying chain receives a stop command before reaching the weighing platform, and stops running after T1 is delayed;
the lifting arm starts to descend when the conveying chain stops running, and stops T2 to start to ascend after descending to a proper position; the weighing station finishes weighing in T2 after the lifting arm is lowered to the position.
9. The control method of the automatic weighing device for the steel bundle according to claim 8, characterized in that: after the conveying chain descends to the right position, the lifting arm is locked within the time T2 so that the lifting arm cannot ascend.
10. The control method of the automatic weighing device for the steel bundle according to claim 8, characterized in that: the T1 is 1.5-2.0 s, and the T2 is 10-15 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111205254.3A CN113847974B (en) | 2021-10-15 | 2021-10-15 | Automatic weighing device for steel bundles and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111205254.3A CN113847974B (en) | 2021-10-15 | 2021-10-15 | Automatic weighing device for steel bundles and control method thereof |
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| CN113847974A true CN113847974A (en) | 2021-12-28 |
| CN113847974B CN113847974B (en) | 2023-09-12 |
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